2522fe45a186e fs/dlm/lowcomms.c (Thomas Gleixner 2019-05-28 09:57:20 -0700 1) // SPDX-License-Identifier: GPL-2.0-only
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 2) /******************************************************************************
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 3) *******************************************************************************
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 4) **
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 5) ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 6) ** Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 7) **
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 8) **
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 9) *******************************************************************************
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 10) ******************************************************************************/
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 11)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 12) /*
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 13) * lowcomms.c
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 14) *
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 15) * This is the "low-level" comms layer.
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 16) *
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 17) * It is responsible for sending/receiving messages
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 18) * from other nodes in the cluster.
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 19) *
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 20) * Cluster nodes are referred to by their nodeids. nodeids are
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 21) * simply 32 bit numbers to the locking module - if they need to
2cf12c0bf261e fs/dlm/lowcomms.c (Joe Perches 2009-01-22 13:26:47 -0800 22) * be expanded for the cluster infrastructure then that is its
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 23) * responsibility. It is this layer's
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 24) * responsibility to resolve these into IP address or
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 25) * whatever it needs for inter-node communication.
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 26) *
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 27) * The comms level is two kernel threads that deal mainly with
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 28) * the receiving of messages from other nodes and passing them
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 29) * up to the mid-level comms layer (which understands the
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 30) * message format) for execution by the locking core, and
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 31) * a send thread which does all the setting up of connections
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 32) * to remote nodes and the sending of data. Threads are not allowed
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 33) * to send their own data because it may cause them to wait in times
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 34) * of high load. Also, this way, the sending thread can collect together
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 35) * messages bound for one node and send them in one block.
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 36) *
2cf12c0bf261e fs/dlm/lowcomms.c (Joe Perches 2009-01-22 13:26:47 -0800 37) * lowcomms will choose to use either TCP or SCTP as its transport layer
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 38) * depending on the configuration variable 'protocol'. This should be set
2cf12c0bf261e fs/dlm/lowcomms.c (Joe Perches 2009-01-22 13:26:47 -0800 39) * to 0 (default) for TCP or 1 for SCTP. It should be configured using a
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 40) * cluster-wide mechanism as it must be the same on all nodes of the cluster
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 41) * for the DLM to function.
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 42) *
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 43) */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 44)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 45) #include <asm/ioctls.h>
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 46) #include <net/sock.h>
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 47) #include <net/tcp.h>
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 48) #include <linux/pagemap.h>
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 49) #include <linux/file.h>
7a936ce71eed7 fs/dlm/lowcomms.c (Matthias Kaehlcke 2008-05-12 10:04:51 -0500 50) #include <linux/mutex.h>
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 51) #include <linux/sctp.h>
5a0e3ad6af866 fs/dlm/lowcomms.c (Tejun Heo 2010-03-24 17:04:11 +0900 52) #include <linux/slab.h>
2f2d76cc3e938 fs/dlm/lowcomms.c (Benjamin Poirier 2012-03-08 05:55:59 +0000 53) #include <net/sctp/sctp.h>
44ad532b3277f fs/dlm/lowcomms.c (Joe Perches 2009-01-22 13:24:49 -0800 54) #include <net/ipv6.h>
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 55)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 56) #include "dlm_internal.h"
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 57) #include "lowcomms.h"
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 58) #include "midcomms.h"
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 59) #include "config.h"
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 60)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 61) #define NEEDED_RMEM (4*1024*1024)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 62) #define CONN_HASH_SIZE 32
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 63)
f92c8dd7a0eb1 fs/dlm/lowcomms.c (Bob Peterson 2010-11-12 11:15:20 -0600 64) /* Number of messages to send before rescheduling */
f92c8dd7a0eb1 fs/dlm/lowcomms.c (Bob Peterson 2010-11-12 11:15:20 -0600 65) #define MAX_SEND_MSG_COUNT 25
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 66) #define DLM_SHUTDOWN_WAIT_TIMEOUT msecs_to_jiffies(10000)
f92c8dd7a0eb1 fs/dlm/lowcomms.c (Bob Peterson 2010-11-12 11:15:20 -0600 67)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 68) struct connection {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 69) struct socket *sock; /* NULL if not connected */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 70) uint32_t nodeid; /* So we know who we are in the list */
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 71) struct mutex sock_mutex;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 72) unsigned long flags;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 73) #define CF_READ_PENDING 1
8a4abb0819769 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:16 +0000 74) #define CF_WRITE_PENDING 2
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 75) #define CF_INIT_PENDING 4
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 76) #define CF_IS_OTHERCON 5
063c4c99630c0 fs/dlm/lowcomms.c (Lars Marowsky-Bree 2009-08-11 16:18:23 -0500 77) #define CF_CLOSE 6
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 78) #define CF_APP_LIMITED 7
b2a6662932c52 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:50 +0000 79) #define CF_CLOSING 8
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 80) #define CF_SHUTDOWN 9
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 81) #define CF_CONNECTED 10
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 82) #define CF_RECONNECT 11
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 83) #define CF_DELAY_CONNECT 12
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 84) #define CF_EOF 13
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 85) struct list_head writequeue; /* List of outgoing writequeue_entries */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 86) spinlock_t writequeue_lock;
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 87) atomic_t writequeue_cnt;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 88) void (*connect_action) (struct connection *); /* What to do to connect */
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 89) void (*shutdown_action)(struct connection *con); /* What to do to shutdown */
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 90) bool (*eof_condition)(struct connection *con); /* What to do to eof check */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 91) int retries;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 92) #define MAX_CONNECT_RETRIES 3
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 93) struct hlist_node list;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 94) struct connection *othercon;
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 95) struct connection *sendcon;
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 96) struct work_struct rwork; /* Receive workqueue */
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 97) struct work_struct swork; /* Send workqueue */
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 98) wait_queue_head_t shutdown_wait; /* wait for graceful shutdown */
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 99) unsigned char *rx_buf;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 100) int rx_buflen;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 101) int rx_leftover;
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 102) struct rcu_head rcu;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 103) };
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 104) #define sock2con(x) ((struct connection *)(x)->sk_user_data)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 105)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 106) struct listen_connection {
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 107) struct socket *sock;
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 108) struct work_struct rwork;
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 109) };
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 110)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 111) #define DLM_WQ_REMAIN_BYTES(e) (PAGE_SIZE - e->end)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 112) #define DLM_WQ_LENGTH_BYTES(e) (e->end - e->offset)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 113)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 114) /* An entry waiting to be sent */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 115) struct writequeue_entry {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 116) struct list_head list;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 117) struct page *page;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 118) int offset;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 119) int len;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 120) int end;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 121) int users;
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 122) int idx; /* get()/commit() idx exchange */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 123) struct connection *con;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 124) };
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 125)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 126) struct dlm_node_addr {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 127) struct list_head list;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 128) int nodeid;
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 129) int mark;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 130) int addr_count;
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 131) int curr_addr_index;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 132) struct sockaddr_storage *addr[DLM_MAX_ADDR_COUNT];
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 133) };
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 134)
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 135) static struct listen_sock_callbacks {
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 136) void (*sk_error_report)(struct sock *);
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 137) void (*sk_data_ready)(struct sock *);
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 138) void (*sk_state_change)(struct sock *);
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 139) void (*sk_write_space)(struct sock *);
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 140) } listen_sock;
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 141)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 142) static LIST_HEAD(dlm_node_addrs);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 143) static DEFINE_SPINLOCK(dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 144)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 145) static struct listen_connection listen_con;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 146) static struct sockaddr_storage *dlm_local_addr[DLM_MAX_ADDR_COUNT];
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 147) static int dlm_local_count;
517461630d1c2 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:13 -0500 148) int dlm_allow_conn;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 149)
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 150) /* Work queues */
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 151) static struct workqueue_struct *recv_workqueue;
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 152) static struct workqueue_struct *send_workqueue;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 153)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 154) static struct hlist_head connection_hash[CONN_HASH_SIZE];
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 155) static DEFINE_SPINLOCK(connections_lock);
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 156) DEFINE_STATIC_SRCU(connections_srcu);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 157)
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 158) static void process_recv_sockets(struct work_struct *work);
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 159) static void process_send_sockets(struct work_struct *work);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 160)
0672c3c280efd fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:22 -0500 161) static void sctp_connect_to_sock(struct connection *con);
0672c3c280efd fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:22 -0500 162) static void tcp_connect_to_sock(struct connection *con);
42873c903bd71 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:23 -0500 163) static void dlm_tcp_shutdown(struct connection *con);
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 164)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 165) /* This is deliberately very simple because most clusters have simple
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 166) sequential nodeids, so we should be able to go straight to a connection
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 167) struct in the array */
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 168) static inline int nodeid_hash(int nodeid)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 169) {
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 170) return nodeid & (CONN_HASH_SIZE-1);
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 171) }
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 172)
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 173) static struct connection *__find_con(int nodeid, int r)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 174) {
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 175) struct connection *con;
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 176)
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 177) hlist_for_each_entry_rcu(con, &connection_hash[r], list) {
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 178) if (con->nodeid == nodeid)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 179) return con;
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 180) }
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 181)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 182) return NULL;
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 183) }
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 184)
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 185) static bool tcp_eof_condition(struct connection *con)
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 186) {
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 187) return atomic_read(&con->writequeue_cnt);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 188) }
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 189)
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 190) static int dlm_con_init(struct connection *con, int nodeid)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 191) {
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 192) con->rx_buflen = dlm_config.ci_buffer_size;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 193) con->rx_buf = kmalloc(con->rx_buflen, GFP_NOFS);
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 194) if (!con->rx_buf)
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 195) return -ENOMEM;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 196)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 197) con->nodeid = nodeid;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 198) mutex_init(&con->sock_mutex);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 199) INIT_LIST_HEAD(&con->writequeue);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 200) spin_lock_init(&con->writequeue_lock);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 201) atomic_set(&con->writequeue_cnt, 0);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 202) INIT_WORK(&con->swork, process_send_sockets);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 203) INIT_WORK(&con->rwork, process_recv_sockets);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 204) init_waitqueue_head(&con->shutdown_wait);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 205)
42873c903bd71 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:23 -0500 206) if (dlm_config.ci_protocol == 0) {
0672c3c280efd fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:22 -0500 207) con->connect_action = tcp_connect_to_sock;
42873c903bd71 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:23 -0500 208) con->shutdown_action = dlm_tcp_shutdown;
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 209) con->eof_condition = tcp_eof_condition;
42873c903bd71 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:23 -0500 210) } else {
0672c3c280efd fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:22 -0500 211) con->connect_action = sctp_connect_to_sock;
42873c903bd71 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:23 -0500 212) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 213)
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 214) return 0;
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 215) }
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 216)
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 217) /*
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 218) * If 'allocation' is zero then we don't attempt to create a new
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 219) * connection structure for this node.
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 220) */
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 221) static struct connection *nodeid2con(int nodeid, gfp_t alloc)
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 222) {
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 223) struct connection *con, *tmp;
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 224) int r, ret;
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 225)
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 226) r = nodeid_hash(nodeid);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 227) con = __find_con(nodeid, r);
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 228) if (con || !alloc)
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 229) return con;
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 230)
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 231) con = kzalloc(sizeof(*con), alloc);
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 232) if (!con)
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 233) return NULL;
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 234)
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 235) ret = dlm_con_init(con, nodeid);
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 236) if (ret) {
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 237) kfree(con);
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 238) return NULL;
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 239) }
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 240)
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 241) spin_lock(&connections_lock);
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 242) /* Because multiple workqueues/threads calls this function it can
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 243) * race on multiple cpu's. Instead of locking hot path __find_con()
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 244) * we just check in rare cases of recently added nodes again
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 245) * under protection of connections_lock. If this is the case we
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 246) * abort our connection creation and return the existing connection.
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 247) */
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 248) tmp = __find_con(nodeid, r);
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 249) if (tmp) {
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 250) spin_unlock(&connections_lock);
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 251) kfree(con->rx_buf);
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 252) kfree(con);
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 253) return tmp;
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 254) }
4f2b30fd9b4bd fs/dlm/lowcomms.c (Alexander Aring 2020-09-30 18:37:29 -0400 255)
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 256) hlist_add_head_rcu(&con->list, &connection_hash[r]);
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 257) spin_unlock(&connections_lock);
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 258)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 259) return con;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 260) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 261)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 262) /* Loop round all connections */
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 263) static void foreach_conn(void (*conn_func)(struct connection *c))
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 264) {
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 265) int i;
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 266) struct connection *con;
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 267)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 268) for (i = 0; i < CONN_HASH_SIZE; i++) {
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 269) hlist_for_each_entry_rcu(con, &connection_hash[i], list)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 270) conn_func(con);
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 271) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 272) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 273)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 274) static struct dlm_node_addr *find_node_addr(int nodeid)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 275) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 276) struct dlm_node_addr *na;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 277)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 278) list_for_each_entry(na, &dlm_node_addrs, list) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 279) if (na->nodeid == nodeid)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 280) return na;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 281) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 282) return NULL;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 283) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 284)
40c6b83e5a07d fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:27 -0500 285) static int addr_compare(const struct sockaddr_storage *x,
40c6b83e5a07d fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:27 -0500 286) const struct sockaddr_storage *y)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 287) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 288) switch (x->ss_family) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 289) case AF_INET: {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 290) struct sockaddr_in *sinx = (struct sockaddr_in *)x;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 291) struct sockaddr_in *siny = (struct sockaddr_in *)y;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 292) if (sinx->sin_addr.s_addr != siny->sin_addr.s_addr)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 293) return 0;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 294) if (sinx->sin_port != siny->sin_port)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 295) return 0;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 296) break;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 297) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 298) case AF_INET6: {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 299) struct sockaddr_in6 *sinx = (struct sockaddr_in6 *)x;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 300) struct sockaddr_in6 *siny = (struct sockaddr_in6 *)y;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 301) if (!ipv6_addr_equal(&sinx->sin6_addr, &siny->sin6_addr))
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 302) return 0;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 303) if (sinx->sin6_port != siny->sin6_port)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 304) return 0;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 305) break;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 306) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 307) default:
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 308) return 0;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 309) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 310) return 1;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 311) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 312)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 313) static int nodeid_to_addr(int nodeid, struct sockaddr_storage *sas_out,
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 314) struct sockaddr *sa_out, bool try_new_addr,
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 315) unsigned int *mark)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 316) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 317) struct sockaddr_storage sas;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 318) struct dlm_node_addr *na;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 319)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 320) if (!dlm_local_count)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 321) return -1;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 322)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 323) spin_lock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 324) na = find_node_addr(nodeid);
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 325) if (na && na->addr_count) {
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 326) memcpy(&sas, na->addr[na->curr_addr_index],
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 327) sizeof(struct sockaddr_storage));
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 328)
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 329) if (try_new_addr) {
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 330) na->curr_addr_index++;
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 331) if (na->curr_addr_index == na->addr_count)
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 332) na->curr_addr_index = 0;
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 333) }
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 334) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 335) spin_unlock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 336)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 337) if (!na)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 338) return -EEXIST;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 339)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 340) if (!na->addr_count)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 341) return -ENOENT;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 342)
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 343) *mark = na->mark;
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 344)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 345) if (sas_out)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 346) memcpy(sas_out, &sas, sizeof(struct sockaddr_storage));
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 347)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 348) if (!sa_out)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 349) return 0;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 350)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 351) if (dlm_local_addr[0]->ss_family == AF_INET) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 352) struct sockaddr_in *in4 = (struct sockaddr_in *) &sas;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 353) struct sockaddr_in *ret4 = (struct sockaddr_in *) sa_out;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 354) ret4->sin_addr.s_addr = in4->sin_addr.s_addr;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 355) } else {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 356) struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) &sas;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 357) struct sockaddr_in6 *ret6 = (struct sockaddr_in6 *) sa_out;
4e3fd7a06dc20 fs/dlm/lowcomms.c (Alexey Dobriyan 2011-11-21 03:39:03 +0000 358) ret6->sin6_addr = in6->sin6_addr;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 359) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 360)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 361) return 0;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 362) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 363)
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 364) static int addr_to_nodeid(struct sockaddr_storage *addr, int *nodeid,
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 365) unsigned int *mark)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 366) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 367) struct dlm_node_addr *na;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 368) int rv = -EEXIST;
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 369) int addr_i;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 370)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 371) spin_lock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 372) list_for_each_entry(na, &dlm_node_addrs, list) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 373) if (!na->addr_count)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 374) continue;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 375)
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 376) for (addr_i = 0; addr_i < na->addr_count; addr_i++) {
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 377) if (addr_compare(na->addr[addr_i], addr)) {
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 378) *nodeid = na->nodeid;
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 379) *mark = na->mark;
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 380) rv = 0;
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 381) goto unlock;
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 382) }
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 383) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 384) }
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 385) unlock:
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 386) spin_unlock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 387) return rv;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 388) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 389)
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 390) /* caller need to held dlm_node_addrs_spin lock */
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 391) static bool dlm_lowcomms_na_has_addr(const struct dlm_node_addr *na,
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 392) const struct sockaddr_storage *addr)
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 393) {
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 394) int i;
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 395)
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 396) for (i = 0; i < na->addr_count; i++) {
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 397) if (addr_compare(na->addr[i], addr))
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 398) return true;
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 399) }
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 400)
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 401) return false;
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 402) }
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 403)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 404) int dlm_lowcomms_addr(int nodeid, struct sockaddr_storage *addr, int len)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 405) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 406) struct sockaddr_storage *new_addr;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 407) struct dlm_node_addr *new_node, *na;
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 408) bool ret;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 409)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 410) new_node = kzalloc(sizeof(struct dlm_node_addr), GFP_NOFS);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 411) if (!new_node)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 412) return -ENOMEM;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 413)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 414) new_addr = kzalloc(sizeof(struct sockaddr_storage), GFP_NOFS);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 415) if (!new_addr) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 416) kfree(new_node);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 417) return -ENOMEM;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 418) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 419)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 420) memcpy(new_addr, addr, len);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 421)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 422) spin_lock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 423) na = find_node_addr(nodeid);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 424) if (!na) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 425) new_node->nodeid = nodeid;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 426) new_node->addr[0] = new_addr;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 427) new_node->addr_count = 1;
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 428) new_node->mark = dlm_config.ci_mark;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 429) list_add(&new_node->list, &dlm_node_addrs);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 430) spin_unlock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 431) return 0;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 432) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 433)
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 434) ret = dlm_lowcomms_na_has_addr(na, addr);
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 435) if (ret) {
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 436) spin_unlock(&dlm_node_addrs_spin);
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 437) kfree(new_addr);
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 438) kfree(new_node);
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 439) return -EEXIST;
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 440) }
4f19d071f9bee fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:28 -0500 441)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 442) if (na->addr_count >= DLM_MAX_ADDR_COUNT) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 443) spin_unlock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 444) kfree(new_addr);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 445) kfree(new_node);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 446) return -ENOSPC;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 447) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 448)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 449) na->addr[na->addr_count++] = new_addr;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 450) spin_unlock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 451) kfree(new_node);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 452) return 0;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 453) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 454)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 455) /* Data available on socket or listen socket received a connect */
676d23690fb62 fs/dlm/lowcomms.c (David S. Miller 2014-04-11 16:15:36 -0400 456) static void lowcomms_data_ready(struct sock *sk)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 457) {
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 458) struct connection *con;
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 459)
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 460) read_lock_bh(&sk->sk_callback_lock);
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 461) con = sock2con(sk);
afb853fb4eec3 fs/dlm/lowcomms.c (Patrick Caulfield 2007-06-01 10:07:26 -0500 462) if (con && !test_and_set_bit(CF_READ_PENDING, &con->flags))
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 463) queue_work(recv_workqueue, &con->rwork);
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 464) read_unlock_bh(&sk->sk_callback_lock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 465) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 466)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 467) static void lowcomms_listen_data_ready(struct sock *sk)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 468) {
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 469) queue_work(recv_workqueue, &listen_con.rwork);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 470) }
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 471)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 472) static void lowcomms_write_space(struct sock *sk)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 473) {
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 474) struct connection *con;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 475)
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 476) read_lock_bh(&sk->sk_callback_lock);
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 477) con = sock2con(sk);
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 478) if (!con)
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 479) goto out;
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 480)
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 481) if (!test_and_set_bit(CF_CONNECTED, &con->flags)) {
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 482) log_print("successful connected to node %d", con->nodeid);
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 483) queue_work(send_workqueue, &con->swork);
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 484) goto out;
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 485) }
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 486)
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 487) clear_bit(SOCK_NOSPACE, &con->sock->flags);
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 488)
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 489) if (test_and_clear_bit(CF_APP_LIMITED, &con->flags)) {
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 490) con->sock->sk->sk_write_pending--;
9cd3e072b0be1 fs/dlm/lowcomms.c (Eric Dumazet 2015-11-29 20:03:10 -0800 491) clear_bit(SOCKWQ_ASYNC_NOSPACE, &con->sock->flags);
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 492) }
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 493)
01da24d3fbed9 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:14 +0000 494) queue_work(send_workqueue, &con->swork);
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 495) out:
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 496) read_unlock_bh(&sk->sk_callback_lock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 497) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 498)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 499) static inline void lowcomms_connect_sock(struct connection *con)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 500) {
063c4c99630c0 fs/dlm/lowcomms.c (Lars Marowsky-Bree 2009-08-11 16:18:23 -0500 501) if (test_bit(CF_CLOSE, &con->flags))
063c4c99630c0 fs/dlm/lowcomms.c (Lars Marowsky-Bree 2009-08-11 16:18:23 -0500 502) return;
61d9102b62129 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:04 +0000 503) queue_work(send_workqueue, &con->swork);
61d9102b62129 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:04 +0000 504) cond_resched();
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 505) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 506)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 507) static void lowcomms_state_change(struct sock *sk)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 508) {
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 509) /* SCTP layer is not calling sk_data_ready when the connection
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 510) * is done, so we catch the signal through here. Also, it
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 511) * doesn't switch socket state when entering shutdown, so we
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 512) * skip the write in that case.
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 513) */
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 514) if (sk->sk_shutdown) {
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 515) if (sk->sk_shutdown == RCV_SHUTDOWN)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 516) lowcomms_data_ready(sk);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 517) } else if (sk->sk_state == TCP_ESTABLISHED) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 518) lowcomms_write_space(sk);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 519) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 520) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 521)
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 522) int dlm_lowcomms_connect_node(int nodeid)
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 523) {
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 524) struct connection *con;
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 525) int idx;
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 526)
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 527) if (nodeid == dlm_our_nodeid())
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 528) return 0;
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 529)
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 530) idx = srcu_read_lock(&connections_srcu);
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 531) con = nodeid2con(nodeid, GFP_NOFS);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 532) if (!con) {
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 533) srcu_read_unlock(&connections_srcu, idx);
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 534) return -ENOMEM;
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 535) }
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 536)
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 537) lowcomms_connect_sock(con);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 538) srcu_read_unlock(&connections_srcu, idx);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 539)
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 540) return 0;
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 541) }
391fbdc5d5271 fs/dlm/lowcomms.c (Christine Caulfield 2009-05-07 10:54:16 -0500 542)
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 543) int dlm_lowcomms_nodes_set_mark(int nodeid, unsigned int mark)
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 544) {
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 545) struct dlm_node_addr *na;
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 546)
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 547) spin_lock(&dlm_node_addrs_spin);
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 548) na = find_node_addr(nodeid);
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 549) if (!na) {
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 550) spin_unlock(&dlm_node_addrs_spin);
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 551) return -ENOENT;
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 552) }
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 553)
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 554) na->mark = mark;
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 555) spin_unlock(&dlm_node_addrs_spin);
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 556)
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 557) return 0;
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 558) }
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 559)
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 560) static void lowcomms_error_report(struct sock *sk)
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 561) {
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 562) struct connection *con;
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 563) struct sockaddr_storage saddr;
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 564) void (*orig_report)(struct sock *) = NULL;
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 565)
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 566) read_lock_bh(&sk->sk_callback_lock);
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 567) con = sock2con(sk);
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 568) if (con == NULL)
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 569) goto out;
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 570)
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 571) orig_report = listen_sock.sk_error_report;
1a31833d085a3 fs/dlm/lowcomms.c (Bob Peterson 2016-01-18 12:29:15 -0500 572) if (con->sock == NULL ||
9b2c45d479d0f fs/dlm/lowcomms.c (Denys Vlasenko 2018-02-12 20:00:20 +0100 573) kernel_getpeername(con->sock, (struct sockaddr *)&saddr) < 0) {
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 574) printk_ratelimited(KERN_ERR "dlm: node %d: socket error "
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 575) "sending to node %d, port %d, "
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 576) "sk_err=%d/%d\n", dlm_our_nodeid(),
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 577) con->nodeid, dlm_config.ci_tcp_port,
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 578) sk->sk_err, sk->sk_err_soft);
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 579) } else if (saddr.ss_family == AF_INET) {
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 580) struct sockaddr_in *sin4 = (struct sockaddr_in *)&saddr;
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 581)
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 582) printk_ratelimited(KERN_ERR "dlm: node %d: socket error "
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 583) "sending to node %d at %pI4, port %d, "
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 584) "sk_err=%d/%d\n", dlm_our_nodeid(),
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 585) con->nodeid, &sin4->sin_addr.s_addr,
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 586) dlm_config.ci_tcp_port, sk->sk_err,
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 587) sk->sk_err_soft);
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 588) } else {
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 589) struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&saddr;
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 590)
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 591) printk_ratelimited(KERN_ERR "dlm: node %d: socket error "
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 592) "sending to node %d at %u.%u.%u.%u, "
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 593) "port %d, sk_err=%d/%d\n", dlm_our_nodeid(),
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 594) con->nodeid, sin6->sin6_addr.s6_addr32[0],
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 595) sin6->sin6_addr.s6_addr32[1],
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 596) sin6->sin6_addr.s6_addr32[2],
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 597) sin6->sin6_addr.s6_addr32[3],
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 598) dlm_config.ci_tcp_port, sk->sk_err,
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 599) sk->sk_err_soft);
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 600) }
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 601)
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 602) /* below sendcon only handling */
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 603) if (test_bit(CF_IS_OTHERCON, &con->flags))
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 604) con = con->sendcon;
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 605)
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 606) switch (sk->sk_err) {
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 607) case ECONNREFUSED:
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 608) set_bit(CF_DELAY_CONNECT, &con->flags);
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 609) break;
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 610) default:
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 611) break;
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 612) }
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 613)
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 614) if (!test_and_set_bit(CF_RECONNECT, &con->flags))
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 615) queue_work(send_workqueue, &con->swork);
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 616)
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 617) out:
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 618) read_unlock_bh(&sk->sk_callback_lock);
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 619) if (orig_report)
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 620) orig_report(sk);
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 621) }
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 622)
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 623) /* Note: sk_callback_lock must be locked before calling this function. */
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 624) static void save_listen_callbacks(struct socket *sock)
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 625) {
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 626) struct sock *sk = sock->sk;
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 627)
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 628) listen_sock.sk_data_ready = sk->sk_data_ready;
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 629) listen_sock.sk_state_change = sk->sk_state_change;
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 630) listen_sock.sk_write_space = sk->sk_write_space;
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 631) listen_sock.sk_error_report = sk->sk_error_report;
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 632) }
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 633)
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 634) static void restore_callbacks(struct socket *sock)
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 635) {
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 636) struct sock *sk = sock->sk;
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 637)
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 638) write_lock_bh(&sk->sk_callback_lock);
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 639) sk->sk_user_data = NULL;
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 640) sk->sk_data_ready = listen_sock.sk_data_ready;
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 641) sk->sk_state_change = listen_sock.sk_state_change;
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 642) sk->sk_write_space = listen_sock.sk_write_space;
cc661fc934a00 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:23 +0000 643) sk->sk_error_report = listen_sock.sk_error_report;
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 644) write_unlock_bh(&sk->sk_callback_lock);
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 645) }
b3a5bbfd780d9 fs/dlm/lowcomms.c (Bob Peterson 2015-08-27 09:34:47 -0500 646)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 647) static void add_listen_sock(struct socket *sock, struct listen_connection *con)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 648) {
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 649) struct sock *sk = sock->sk;
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 650)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 651) write_lock_bh(&sk->sk_callback_lock);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 652) save_listen_callbacks(sock);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 653) con->sock = sock;
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 654)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 655) sk->sk_user_data = con;
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 656) sk->sk_allocation = GFP_NOFS;
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 657) /* Install a data_ready callback */
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 658) sk->sk_data_ready = lowcomms_listen_data_ready;
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 659) write_unlock_bh(&sk->sk_callback_lock);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 660) }
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 661)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 662) /* Make a socket active */
988419a9deab6 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:32 +0000 663) static void add_sock(struct socket *sock, struct connection *con)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 664) {
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 665) struct sock *sk = sock->sk;
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 666)
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 667) write_lock_bh(&sk->sk_callback_lock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 668) con->sock = sock;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 669)
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 670) sk->sk_user_data = con;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 671) /* Install a data_ready callback */
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 672) sk->sk_data_ready = lowcomms_data_ready;
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 673) sk->sk_write_space = lowcomms_write_space;
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 674) sk->sk_state_change = lowcomms_state_change;
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 675) sk->sk_allocation = GFP_NOFS;
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 676) sk->sk_error_report = lowcomms_error_report;
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 677) write_unlock_bh(&sk->sk_callback_lock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 678) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 679)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 680) /* Add the port number to an IPv6 or 4 sockaddr and return the address
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 681) length */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 682) static void make_sockaddr(struct sockaddr_storage *saddr, uint16_t port,
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 683) int *addr_len)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 684) {
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 685) saddr->ss_family = dlm_local_addr[0]->ss_family;
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 686) if (saddr->ss_family == AF_INET) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 687) struct sockaddr_in *in4_addr = (struct sockaddr_in *)saddr;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 688) in4_addr->sin_port = cpu_to_be16(port);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 689) *addr_len = sizeof(struct sockaddr_in);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 690) memset(&in4_addr->sin_zero, 0, sizeof(in4_addr->sin_zero));
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 691) } else {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 692) struct sockaddr_in6 *in6_addr = (struct sockaddr_in6 *)saddr;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 693) in6_addr->sin6_port = cpu_to_be16(port);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 694) *addr_len = sizeof(struct sockaddr_in6);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 695) }
01c8cab25863d fs/dlm/lowcomms.c (Patrick Caulfield 2007-07-17 16:53:15 +0100 696) memset((char *)saddr + *addr_len, 0, sizeof(struct sockaddr_storage) - *addr_len);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 697) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 698)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 699) static void dlm_close_sock(struct socket **sock)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 700) {
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 701) if (*sock) {
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 702) restore_callbacks(*sock);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 703) sock_release(*sock);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 704) *sock = NULL;
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 705) }
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 706) }
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 707)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 708) /* Close a remote connection and tidy up */
0d737a8cfd834 fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:21 -0300 709) static void close_connection(struct connection *con, bool and_other,
0d737a8cfd834 fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:21 -0300 710) bool tx, bool rx)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 711) {
b2a6662932c52 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:50 +0000 712) bool closing = test_and_set_bit(CF_CLOSING, &con->flags);
b2a6662932c52 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:50 +0000 713)
0aa18464c812e fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:02:02 +0000 714) if (tx && !closing && cancel_work_sync(&con->swork)) {
0d737a8cfd834 fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:21 -0300 715) log_print("canceled swork for node %d", con->nodeid);
0aa18464c812e fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:02:02 +0000 716) clear_bit(CF_WRITE_PENDING, &con->flags);
0aa18464c812e fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:02:02 +0000 717) }
0aa18464c812e fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:02:02 +0000 718) if (rx && !closing && cancel_work_sync(&con->rwork)) {
0d737a8cfd834 fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:21 -0300 719) log_print("canceled rwork for node %d", con->nodeid);
0aa18464c812e fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:02:02 +0000 720) clear_bit(CF_READ_PENDING, &con->flags);
0aa18464c812e fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:02:02 +0000 721) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 722)
0d737a8cfd834 fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:21 -0300 723) mutex_lock(&con->sock_mutex);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 724) dlm_close_sock(&con->sock);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 725)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 726) if (con->othercon && and_other) {
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 727) /* Will only re-enter once. */
38ef63844ef42 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:38 -0400 728) close_connection(con->othercon, false, tx, rx);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 729) }
9e5f2825a8b72 fs/dlm/lowcomms.c (Patrick Caulfield 2007-08-02 14:58:14 +0100 730)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 731) con->rx_leftover = 0;
61d96be0f474d fs/dlm/lowcomms.c (Patrick Caulfield 2007-08-20 15:13:38 +0100 732) con->retries = 0;
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 733) clear_bit(CF_CONNECTED, &con->flags);
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 734) clear_bit(CF_DELAY_CONNECT, &con->flags);
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 735) clear_bit(CF_RECONNECT, &con->flags);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 736) clear_bit(CF_EOF, &con->flags);
61d96be0f474d fs/dlm/lowcomms.c (Patrick Caulfield 2007-08-20 15:13:38 +0100 737) mutex_unlock(&con->sock_mutex);
b2a6662932c52 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:50 +0000 738) clear_bit(CF_CLOSING, &con->flags);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 739) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 740)
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 741) static void shutdown_connection(struct connection *con)
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 742) {
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 743) int ret;
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 744)
eec054b5a7cfe fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:19 -0500 745) flush_work(&con->swork);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 746)
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 747) mutex_lock(&con->sock_mutex);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 748) /* nothing to shutdown */
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 749) if (!con->sock) {
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 750) mutex_unlock(&con->sock_mutex);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 751) return;
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 752) }
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 753)
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 754) set_bit(CF_SHUTDOWN, &con->flags);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 755) ret = kernel_sock_shutdown(con->sock, SHUT_WR);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 756) mutex_unlock(&con->sock_mutex);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 757) if (ret) {
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 758) log_print("Connection %p failed to shutdown: %d will force close",
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 759) con, ret);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 760) goto force_close;
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 761) } else {
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 762) ret = wait_event_timeout(con->shutdown_wait,
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 763) !test_bit(CF_SHUTDOWN, &con->flags),
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 764) DLM_SHUTDOWN_WAIT_TIMEOUT);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 765) if (ret == 0) {
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 766) log_print("Connection %p shutdown timed out, will force close",
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 767) con);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 768) goto force_close;
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 769) }
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 770) }
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 771)
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 772) return;
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 773)
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 774) force_close:
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 775) clear_bit(CF_SHUTDOWN, &con->flags);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 776) close_connection(con, false, true, true);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 777) }
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 778)
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 779) static void dlm_tcp_shutdown(struct connection *con)
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 780) {
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 781) if (con->othercon)
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 782) shutdown_connection(con->othercon);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 783) shutdown_connection(con);
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 784) }
055923bf6b486 fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:38 -0400 785)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 786) static int con_realloc_receive_buf(struct connection *con, int newlen)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 787) {
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 788) unsigned char *newbuf;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 789)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 790) newbuf = kmalloc(newlen, GFP_NOFS);
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 791) if (!newbuf)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 792) return -ENOMEM;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 793)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 794) /* copy any leftover from last receive */
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 795) if (con->rx_leftover)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 796) memmove(newbuf, con->rx_buf, con->rx_leftover);
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 797)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 798) /* swap to new buffer space */
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 799) kfree(con->rx_buf);
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 800) con->rx_buflen = newlen;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 801) con->rx_buf = newbuf;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 802)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 803) return 0;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 804) }
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 805)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 806) /* Data received from remote end */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 807) static int receive_from_sock(struct connection *con)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 808) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 809) int call_again_soon = 0;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 810) struct msghdr msg;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 811) struct kvec iov;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 812) int ret, buflen;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 813)
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 814) mutex_lock(&con->sock_mutex);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 815)
a34fbc6363256 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-02-01 16:46:33 +0000 816) if (con->sock == NULL) {
a34fbc6363256 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-02-01 16:46:33 +0000 817) ret = -EAGAIN;
a34fbc6363256 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-02-01 16:46:33 +0000 818) goto out_close;
a34fbc6363256 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-02-01 16:46:33 +0000 819) }
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 820)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 821) /* realloc if we get new buffer size to read out */
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 822) buflen = dlm_config.ci_buffer_size;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 823) if (con->rx_buflen != buflen && con->rx_leftover <= buflen) {
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 824) ret = con_realloc_receive_buf(con, buflen);
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 825) if (ret < 0)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 826) goto out_resched;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 827) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 828)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 829) /* calculate new buffer parameter regarding last receive and
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 830) * possible leftover bytes
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 831) */
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 832) iov.iov_base = con->rx_buf + con->rx_leftover;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 833) iov.iov_len = con->rx_buflen - con->rx_leftover;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 834)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 835) memset(&msg, 0, sizeof(msg));
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 836) msg.msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 837) ret = kernel_recvmsg(con->sock, &msg, &iov, 1, iov.iov_len,
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 838) msg.msg_flags);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 839) if (ret <= 0)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 840) goto out_close;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 841) else if (ret == iov.iov_len)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 842) call_again_soon = 1;
bd44e2b007bc9 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-22 14:51:33 +0000 843)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 844) /* new buflen according readed bytes and leftover from last receive */
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 845) buflen = ret + con->rx_leftover;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 846) ret = dlm_process_incoming_buffer(con->nodeid, con->rx_buf, buflen);
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 847) if (ret < 0)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 848) goto out_close;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 849)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 850) /* calculate leftover bytes from process and put it into begin of
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 851) * the receive buffer, so next receive we have the full message
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 852) * at the start address of the receive buffer.
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 853) */
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 854) con->rx_leftover = buflen - ret;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 855) if (con->rx_leftover) {
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 856) memmove(con->rx_buf, con->rx_buf + ret,
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 857) con->rx_leftover);
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 858) call_again_soon = true;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 859) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 860)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 861) if (call_again_soon)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 862) goto out_resched;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 863)
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 864) mutex_unlock(&con->sock_mutex);
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 865) return 0;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 866)
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 867) out_resched:
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 868) if (!test_and_set_bit(CF_READ_PENDING, &con->flags))
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 869) queue_work(recv_workqueue, &con->rwork);
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 870) mutex_unlock(&con->sock_mutex);
bd44e2b007bc9 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-22 14:51:33 +0000 871) return -EAGAIN;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 872)
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 873) out_close:
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 874) if (ret == 0) {
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 875) log_print("connection %p got EOF from %d",
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 876) con, con->nodeid);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 877)
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 878) if (con->eof_condition && con->eof_condition(con)) {
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 879) set_bit(CF_EOF, &con->flags);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 880) mutex_unlock(&con->sock_mutex);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 881) } else {
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 882) mutex_unlock(&con->sock_mutex);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 883) close_connection(con, false, true, false);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 884)
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 885) /* handling for tcp shutdown */
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 886) clear_bit(CF_SHUTDOWN, &con->flags);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 887) wake_up(&con->shutdown_wait);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 888) }
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 889)
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 890) /* signal to breaking receive worker */
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 891) ret = -1;
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 892) } else {
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 893) mutex_unlock(&con->sock_mutex);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 894) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 895) return ret;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 896) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 897)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 898) /* Listening socket is busy, accept a connection */
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 899) static int accept_from_sock(struct listen_connection *con)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 900) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 901) int result;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 902) struct sockaddr_storage peeraddr;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 903) struct socket *newsock;
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 904) int len, idx;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 905) int nodeid;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 906) struct connection *newcon;
bd44e2b007bc9 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-22 14:51:33 +0000 907) struct connection *addcon;
3f78cd7d2449a fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:23 -0400 908) unsigned int mark;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 909)
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 910) if (!dlm_allow_conn) {
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 911) return -1;
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 912) }
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 913)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 914) if (!con->sock)
3421fb15be01f fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:38 +0000 915) return -ENOTCONN;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 916)
3421fb15be01f fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:38 +0000 917) result = kernel_accept(con->sock, &newsock, O_NONBLOCK);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 918) if (result < 0)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 919) goto accept_err;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 920)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 921) /* Get the connected socket's peer */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 922) memset(&peeraddr, 0, sizeof(peeraddr));
9b2c45d479d0f fs/dlm/lowcomms.c (Denys Vlasenko 2018-02-12 20:00:20 +0100 923) len = newsock->ops->getname(newsock, (struct sockaddr *)&peeraddr, 2);
9b2c45d479d0f fs/dlm/lowcomms.c (Denys Vlasenko 2018-02-12 20:00:20 +0100 924) if (len < 0) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 925) result = -ECONNABORTED;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 926) goto accept_err;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 927) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 928)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 929) /* Get the new node's NODEID */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 930) make_sockaddr(&peeraddr, 0, &len);
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 931) if (addr_to_nodeid(&peeraddr, &nodeid, &mark)) {
bcaadf5c1ac4f fs/dlm/lowcomms.c (Masatake YAMATO 2011-07-04 12:25:51 +0900 932) unsigned char *b=(unsigned char *)&peeraddr;
617e82e10ccf9 fs/dlm/lowcomms.c (David Teigland 2007-04-26 13:46:49 -0500 933) log_print("connect from non cluster node");
bcaadf5c1ac4f fs/dlm/lowcomms.c (Masatake YAMATO 2011-07-04 12:25:51 +0900 934) print_hex_dump_bytes("ss: ", DUMP_PREFIX_NONE,
bcaadf5c1ac4f fs/dlm/lowcomms.c (Masatake YAMATO 2011-07-04 12:25:51 +0900 935) b, sizeof(struct sockaddr_storage));
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 936) sock_release(newsock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 937) return -1;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 938) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 939)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 940) log_print("got connection from %d", nodeid);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 941)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 942) /* Check to see if we already have a connection to this node. This
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 943) * could happen if the two nodes initiate a connection at roughly
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 944) * the same time and the connections cross on the wire.
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 945) * In this case we store the incoming one in "othercon"
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 946) */
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 947) idx = srcu_read_lock(&connections_srcu);
748285ccf7ea7 fs/dlm/lowcomms.c (David Teigland 2009-05-15 10:50:57 -0500 948) newcon = nodeid2con(nodeid, GFP_NOFS);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 949) if (!newcon) {
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 950) srcu_read_unlock(&connections_srcu, idx);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 951) result = -ENOMEM;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 952) goto accept_err;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 953) }
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 954)
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 955) sock_set_mark(newsock->sk, mark);
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 956)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 957) mutex_lock(&newcon->sock_mutex);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 958) if (newcon->sock) {
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 959) struct connection *othercon = newcon->othercon;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 960)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 961) if (!othercon) {
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 962) othercon = kzalloc(sizeof(*othercon), GFP_NOFS);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 963) if (!othercon) {
617e82e10ccf9 fs/dlm/lowcomms.c (David Teigland 2007-04-26 13:46:49 -0500 964) log_print("failed to allocate incoming socket");
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 965) mutex_unlock(&newcon->sock_mutex);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 966) srcu_read_unlock(&connections_srcu, idx);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 967) result = -ENOMEM;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 968) goto accept_err;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 969) }
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 970)
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 971) result = dlm_con_init(othercon, nodeid);
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 972) if (result < 0) {
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 973) kfree(othercon);
2fd8db2dd05d8 fs/dlm/lowcomms.c (Yang Yingliang 2021-03-27 16:37:04 +0800 974) mutex_unlock(&newcon->sock_mutex);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 975) srcu_read_unlock(&connections_srcu, idx);
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 976) goto accept_err;
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 977) }
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 978)
e9a470acd9305 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:11 -0500 979) lockdep_set_subclass(&othercon->sock_mutex, 1);
6cde210a97587 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:21 -0500 980) newcon->othercon = othercon;
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 981) othercon->sendcon = newcon;
ba3ab3ca68caa fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:37 -0400 982) } else {
ba3ab3ca68caa fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:37 -0400 983) /* close other sock con if we have something new */
ba3ab3ca68caa fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:37 -0400 984) close_connection(othercon, false, true, false);
61d96be0f474d fs/dlm/lowcomms.c (Patrick Caulfield 2007-08-20 15:13:38 +0100 985) }
ba3ab3ca68caa fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:37 -0400 986)
e9a470acd9305 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:11 -0500 987) mutex_lock(&othercon->sock_mutex);
ba3ab3ca68caa fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:37 -0400 988) add_sock(newsock, othercon);
ba3ab3ca68caa fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:37 -0400 989) addcon = othercon;
ba3ab3ca68caa fs/dlm/lowcomms.c (Alexander Aring 2020-07-27 09:13:37 -0400 990) mutex_unlock(&othercon->sock_mutex);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 991) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 992) else {
3735b4b9f1c10 fs/dlm/lowcomms.c (Bob Peterson 2016-09-23 14:23:26 -0400 993) /* accept copies the sk after we've saved the callbacks, so we
3735b4b9f1c10 fs/dlm/lowcomms.c (Bob Peterson 2016-09-23 14:23:26 -0400 994) don't want to save them a second time or comm errors will
3735b4b9f1c10 fs/dlm/lowcomms.c (Bob Peterson 2016-09-23 14:23:26 -0400 995) result in calling sk_error_report recursively. */
988419a9deab6 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:32 +0000 996) add_sock(newsock, newcon);
bd44e2b007bc9 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-22 14:51:33 +0000 997) addcon = newcon;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 998) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 999)
b30a624f50d9b fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:10 -0500 1000) set_bit(CF_CONNECTED, &addcon->flags);
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 1001) mutex_unlock(&newcon->sock_mutex);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1002)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1003) /*
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1004) * Add it to the active queue in case we got data
25985edcedea6 fs/dlm/lowcomms.c (Lucas De Marchi 2011-03-30 22:57:33 -0300 1005) * between processing the accept adding the socket
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1006) * to the read_sockets list
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1007) */
bd44e2b007bc9 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-22 14:51:33 +0000 1008) if (!test_and_set_bit(CF_READ_PENDING, &addcon->flags))
bd44e2b007bc9 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-22 14:51:33 +0000 1009) queue_work(recv_workqueue, &addcon->rwork);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1010)
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1011) srcu_read_unlock(&connections_srcu, idx);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1012)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1013) return 0;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1014)
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1015) accept_err:
3421fb15be01f fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:38 +0000 1016) if (newsock)
3421fb15be01f fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:38 +0000 1017) sock_release(newsock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1018)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1019) if (result != -EAGAIN)
617e82e10ccf9 fs/dlm/lowcomms.c (David Teigland 2007-04-26 13:46:49 -0500 1020) log_print("error accepting connection from node: %d", result);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1021) return result;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1022) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1023)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1024) static void free_entry(struct writequeue_entry *e)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1025) {
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1026) __free_page(e->page);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1027) kfree(e);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1028) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1029)
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1030) /*
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1031) * writequeue_entry_complete - try to delete and free write queue entry
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1032) * @e: write queue entry to try to delete
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1033) * @completed: bytes completed
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1034) *
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1035) * writequeue_lock must be held.
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1036) */
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1037) static void writequeue_entry_complete(struct writequeue_entry *e, int completed)
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1038) {
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1039) e->offset += completed;
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1040) e->len -= completed;
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1041)
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1042) if (e->len == 0 && e->users == 0) {
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1043) list_del(&e->list);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1044) atomic_dec(&e->con->writequeue_cnt);
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1045) free_entry(e);
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1046) }
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1047) }
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1048)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1049) /*
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1050) * sctp_bind_addrs - bind a SCTP socket to all our addresses
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1051) */
13004e8afedca fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:24 -0500 1052) static int sctp_bind_addrs(struct socket *sock, uint16_t port)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1053) {
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1054) struct sockaddr_storage localaddr;
c0425a4249e9d fs/dlm/lowcomms.c (Christoph Hellwig 2020-05-29 14:09:42 +0200 1055) struct sockaddr *addr = (struct sockaddr *)&localaddr;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1056) int i, addr_len, result = 0;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1057)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1058) for (i = 0; i < dlm_local_count; i++) {
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1059) memcpy(&localaddr, dlm_local_addr[i], sizeof(localaddr));
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1060) make_sockaddr(&localaddr, port, &addr_len);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1061)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1062) if (!i)
13004e8afedca fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:24 -0500 1063) result = kernel_bind(sock, addr, addr_len);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1064) else
13004e8afedca fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:24 -0500 1065) result = sock_bind_add(sock->sk, addr, addr_len);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1066)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1067) if (result < 0) {
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1068) log_print("Can't bind to %d addr number %d, %d.\n",
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1069) port, i + 1, result);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1070) break;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1071) }
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1072) }
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1073) return result;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1074) }
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1075)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1076) /* Initiate an SCTP association.
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1077) This is a special case of send_to_sock() in that we don't yet have a
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1078) peeled-off socket for this association, so we use the listening socket
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1079) and add the primary IP address of the remote node.
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1080) */
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1081) static void sctp_connect_to_sock(struct connection *con)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1082) {
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1083) struct sockaddr_storage daddr;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1084) int result;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1085) int addr_len;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1086) struct socket *sock;
9c9f168f5b145 fs/dlm/lowcomms.c (Alexander Aring 2020-06-26 13:26:50 -0400 1087) unsigned int mark;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1088)
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1089) mutex_lock(&con->sock_mutex);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1090)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1091) /* Some odd races can cause double-connects, ignore them */
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1092) if (con->retries++ > MAX_CONNECT_RETRIES)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1093) goto out;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1094)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1095) if (con->sock) {
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1096) log_print("node %d already connected.", con->nodeid);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1097) goto out;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1098) }
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1099)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1100) memset(&daddr, 0, sizeof(daddr));
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 1101) result = nodeid_to_addr(con->nodeid, &daddr, NULL, true, &mark);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1102) if (result < 0) {
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1103) log_print("no address for nodeid %d", con->nodeid);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1104) goto out;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1105) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1106)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1107) /* Create a socket to communicate with */
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1108) result = sock_create_kern(&init_net, dlm_local_addr[0]->ss_family,
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1109) SOCK_STREAM, IPPROTO_SCTP, &sock);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1110) if (result < 0)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1111) goto socket_err;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1112)
9c9f168f5b145 fs/dlm/lowcomms.c (Alexander Aring 2020-06-26 13:26:50 -0400 1113) sock_set_mark(sock->sk, mark);
9c9f168f5b145 fs/dlm/lowcomms.c (Alexander Aring 2020-06-26 13:26:50 -0400 1114)
988419a9deab6 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:32 +0000 1115) add_sock(sock, con);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1116)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1117) /* Bind to all addresses. */
13004e8afedca fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:24 -0500 1118) if (sctp_bind_addrs(con->sock, 0))
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1119) goto bind_err;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1120)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1121) make_sockaddr(&daddr, dlm_config.ci_tcp_port, &addr_len);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1122)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1123) log_print("connecting to %d", con->nodeid);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1124)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1125) /* Turn off Nagle's algorithm */
40ef92c6ec09b fs/dlm/lowcomms.c (Christoph Hellwig 2020-05-29 14:09:40 +0200 1126) sctp_sock_set_nodelay(sock->sk);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1127)
f706d830154b6 fs/dlm/lowcomms.c (Gang He 2018-05-02 10:28:35 -0500 1128) /*
f706d830154b6 fs/dlm/lowcomms.c (Gang He 2018-05-02 10:28:35 -0500 1129) * Make sock->ops->connect() function return in specified time,
f706d830154b6 fs/dlm/lowcomms.c (Gang He 2018-05-02 10:28:35 -0500 1130) * since O_NONBLOCK argument in connect() function does not work here,
f706d830154b6 fs/dlm/lowcomms.c (Gang He 2018-05-02 10:28:35 -0500 1131) * then, we should restore the default value of this attribute.
f706d830154b6 fs/dlm/lowcomms.c (Gang He 2018-05-02 10:28:35 -0500 1132) */
76ee0785f42af fs/dlm/lowcomms.c (Christoph Hellwig 2020-05-28 07:12:12 +0200 1133) sock_set_sndtimeo(sock->sk, 5);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1134) result = sock->ops->connect(sock, (struct sockaddr *)&daddr, addr_len,
da3627c30d229 fs/dlm/lowcomms.c (Gang He 2018-05-29 11:09:22 +0800 1135) 0);
76ee0785f42af fs/dlm/lowcomms.c (Christoph Hellwig 2020-05-28 07:12:12 +0200 1136) sock_set_sndtimeo(sock->sk, 0);
f706d830154b6 fs/dlm/lowcomms.c (Gang He 2018-05-02 10:28:35 -0500 1137)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1138) if (result == -EINPROGRESS)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1139) result = 0;
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 1140) if (result == 0) {
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 1141) if (!test_and_set_bit(CF_CONNECTED, &con->flags))
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 1142) log_print("successful connected to node %d", con->nodeid);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1143) goto out;
19633c7e204b9 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:20 -0500 1144) }
98e1b60ecc441 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:12 -0500 1145)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1146) bind_err:
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1147) con->sock = NULL;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1148) sock_release(sock);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1149)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1150) socket_err:
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1151) /*
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1152) * Some errors are fatal and this list might need adjusting. For other
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1153) * errors we try again until the max number of retries is reached.
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1154) */
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1155) if (result != -EHOSTUNREACH &&
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1156) result != -ENETUNREACH &&
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1157) result != -ENETDOWN &&
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1158) result != -EINVAL &&
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1159) result != -EPROTONOSUPPORT) {
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1160) log_print("connect %d try %d error %d", con->nodeid,
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1161) con->retries, result);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1162) mutex_unlock(&con->sock_mutex);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1163) msleep(1000);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1164) lowcomms_connect_sock(con);
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1165) return;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1166) }
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1167)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1168) out:
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1169) mutex_unlock(&con->sock_mutex);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1170) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1171)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1172) /* Connect a new socket to its peer */
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1173) static void tcp_connect_to_sock(struct connection *con)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1174) {
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1175) struct sockaddr_storage saddr, src_addr;
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 1176) unsigned int mark;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1177) int addr_len;
a89d63a159b1b fs/dlm/lowcomms.c (Casey Dahlin 2009-07-14 12:17:51 -0500 1178) struct socket *sock = NULL;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1179) int result;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1180)
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 1181) mutex_lock(&con->sock_mutex);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1182) if (con->retries++ > MAX_CONNECT_RETRIES)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1183) goto out;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1184)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1185) /* Some odd races can cause double-connects, ignore them */
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1186) if (con->sock)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1187) goto out;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1188)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1189) /* Create a socket to communicate with */
eeb1bd5c40edb fs/dlm/lowcomms.c (Eric W. Biederman 2015-05-08 21:08:05 -0500 1190) result = sock_create_kern(&init_net, dlm_local_addr[0]->ss_family,
eeb1bd5c40edb fs/dlm/lowcomms.c (Eric W. Biederman 2015-05-08 21:08:05 -0500 1191) SOCK_STREAM, IPPROTO_TCP, &sock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1192) if (result < 0)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1193) goto out_err;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1194)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1195) memset(&saddr, 0, sizeof(saddr));
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 1196) result = nodeid_to_addr(con->nodeid, &saddr, NULL, false, &mark);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1197) if (result < 0) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1198) log_print("no address for nodeid %d", con->nodeid);
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1199) goto out_err;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1200) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1201)
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 1202) sock_set_mark(sock->sk, mark);
e125fbeb538e5 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:09 -0500 1203)
988419a9deab6 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:32 +0000 1204) add_sock(sock, con);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1205)
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1206) /* Bind to our cluster-known address connecting to avoid
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1207) routing problems */
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1208) memcpy(&src_addr, dlm_local_addr[0], sizeof(src_addr));
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1209) make_sockaddr(&src_addr, 0, &addr_len);
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1210) result = sock->ops->bind(sock, (struct sockaddr *) &src_addr,
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1211) addr_len);
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1212) if (result < 0) {
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1213) log_print("could not bind for connect: %d", result);
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1214) /* This *may* not indicate a critical error */
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1215) }
6bd8fedaa16da fs/dlm/lowcomms.c (Lon Hohberger 2007-10-25 18:51:54 -0400 1216)
68c817a1c4e21 fs/dlm/lowcomms-tcp.c (David Teigland 2007-01-09 09:41:48 -0600 1217) make_sockaddr(&saddr, dlm_config.ci_tcp_port, &addr_len);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1218)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1219) log_print("connecting to %d", con->nodeid);
cb2d45da81c86 fs/dlm/lowcomms.c (David Teigland 2010-11-12 11:12:55 -0600 1220)
cb2d45da81c86 fs/dlm/lowcomms.c (David Teigland 2010-11-12 11:12:55 -0600 1221) /* Turn off Nagle's algorithm */
12abc5ee7873a fs/dlm/lowcomms.c (Christoph Hellwig 2020-05-28 07:12:19 +0200 1222) tcp_sock_set_nodelay(sock->sk);
cb2d45da81c86 fs/dlm/lowcomms.c (David Teigland 2010-11-12 11:12:55 -0600 1223)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1224) result = sock->ops->connect(sock, (struct sockaddr *)&saddr, addr_len,
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1225) O_NONBLOCK);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1226) if (result == -EINPROGRESS)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1227) result = 0;
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1228) if (result == 0)
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1229) goto out;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1230)
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1231) out_err:
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1232) if (con->sock) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1233) sock_release(con->sock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1234) con->sock = NULL;
a89d63a159b1b fs/dlm/lowcomms.c (Casey Dahlin 2009-07-14 12:17:51 -0500 1235) } else if (sock) {
a89d63a159b1b fs/dlm/lowcomms.c (Casey Dahlin 2009-07-14 12:17:51 -0500 1236) sock_release(sock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1237) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1238) /*
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1239) * Some errors are fatal and this list might need adjusting. For other
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1240) * errors we try again until the max number of retries is reached.
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1241) */
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1242) if (result != -EHOSTUNREACH &&
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1243) result != -ENETUNREACH &&
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1244) result != -ENETDOWN &&
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1245) result != -EINVAL &&
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1246) result != -EPROTONOSUPPORT) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1247) log_print("connect %d try %d error %d", con->nodeid,
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1248) con->retries, result);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1249) mutex_unlock(&con->sock_mutex);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1250) msleep(1000);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1251) lowcomms_connect_sock(con);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1252) return;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1253) }
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1254) out:
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 1255) mutex_unlock(&con->sock_mutex);
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1256) return;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1257) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1258)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1259) /* On error caller must run dlm_close_sock() for the
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1260) * listen connection socket.
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1261) */
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1262) static int tcp_create_listen_sock(struct listen_connection *con,
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1263) struct sockaddr_storage *saddr)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1264) {
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1265) struct socket *sock = NULL;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1266) int result = 0;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1267) int addr_len;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1268)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1269) if (dlm_local_addr[0]->ss_family == AF_INET)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1270) addr_len = sizeof(struct sockaddr_in);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1271) else
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1272) addr_len = sizeof(struct sockaddr_in6);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1273)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1274) /* Create a socket to communicate with */
eeb1bd5c40edb fs/dlm/lowcomms.c (Eric W. Biederman 2015-05-08 21:08:05 -0500 1275) result = sock_create_kern(&init_net, dlm_local_addr[0]->ss_family,
eeb1bd5c40edb fs/dlm/lowcomms.c (Eric W. Biederman 2015-05-08 21:08:05 -0500 1276) SOCK_STREAM, IPPROTO_TCP, &sock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1277) if (result < 0) {
617e82e10ccf9 fs/dlm/lowcomms.c (David Teigland 2007-04-26 13:46:49 -0500 1278) log_print("Can't create listening comms socket");
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1279) goto create_out;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1280) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1281)
a5b7ab6352bfa fs/dlm/lowcomms.c (Alexander Aring 2020-06-26 13:26:49 -0400 1282) sock_set_mark(sock->sk, dlm_config.ci_mark);
a5b7ab6352bfa fs/dlm/lowcomms.c (Alexander Aring 2020-06-26 13:26:49 -0400 1283)
cb2d45da81c86 fs/dlm/lowcomms.c (David Teigland 2010-11-12 11:12:55 -0600 1284) /* Turn off Nagle's algorithm */
12abc5ee7873a fs/dlm/lowcomms.c (Christoph Hellwig 2020-05-28 07:12:19 +0200 1285) tcp_sock_set_nodelay(sock->sk);
cb2d45da81c86 fs/dlm/lowcomms.c (David Teigland 2010-11-12 11:12:55 -0600 1286)
b58f0e8f38c0a fs/dlm/lowcomms.c (Christoph Hellwig 2020-05-28 07:12:09 +0200 1287) sock_set_reuseaddr(sock->sk);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1288)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1289) add_listen_sock(sock, con);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1290)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1291) /* Bind to our port */
68c817a1c4e21 fs/dlm/lowcomms-tcp.c (David Teigland 2007-01-09 09:41:48 -0600 1292) make_sockaddr(saddr, dlm_config.ci_tcp_port, &addr_len);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1293) result = sock->ops->bind(sock, (struct sockaddr *) saddr, addr_len);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1294) if (result < 0) {
617e82e10ccf9 fs/dlm/lowcomms.c (David Teigland 2007-04-26 13:46:49 -0500 1295) log_print("Can't bind to port %d", dlm_config.ci_tcp_port);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1296) goto create_out;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1297) }
ce3d9544cecac fs/dlm/lowcomms.c (Christoph Hellwig 2020-05-28 07:12:15 +0200 1298) sock_set_keepalive(sock->sk);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1299)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1300) result = sock->ops->listen(sock, 5);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1301) if (result < 0) {
617e82e10ccf9 fs/dlm/lowcomms.c (David Teigland 2007-04-26 13:46:49 -0500 1302) log_print("Can't listen on port %d", dlm_config.ci_tcp_port);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1303) goto create_out;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1304) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1305)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1306) return 0;
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1307)
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1308) create_out:
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1309) return result;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1310) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1311)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1312) /* Get local addresses */
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1313) static void init_local(void)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1314) {
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1315) struct sockaddr_storage sas, *addr;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1316) int i;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1317)
30d3a2373f171 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-23 16:26:21 +0100 1318) dlm_local_count = 0;
1b189b8889b7d fs/dlm/lowcomms.c (David Teigland 2012-03-21 09:18:34 -0500 1319) for (i = 0; i < DLM_MAX_ADDR_COUNT; i++) {
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1320) if (dlm_our_addr(&sas, i))
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1321) break;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1322)
5c93f56f770e6 fs/dlm/lowcomms.c (Amitoj Kaur Chawla 2016-06-23 10:22:01 +0530 1323) addr = kmemdup(&sas, sizeof(*addr), GFP_NOFS);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1324) if (!addr)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1325) break;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1326) dlm_local_addr[dlm_local_count++] = addr;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1327) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1328) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1329)
043697f030c5c fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:50 -0400 1330) static void deinit_local(void)
043697f030c5c fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:50 -0400 1331) {
043697f030c5c fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:50 -0400 1332) int i;
043697f030c5c fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:50 -0400 1333)
043697f030c5c fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:50 -0400 1334) for (i = 0; i < dlm_local_count; i++)
043697f030c5c fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:50 -0400 1335) kfree(dlm_local_addr[i]);
043697f030c5c fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:50 -0400 1336) }
043697f030c5c fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:50 -0400 1337)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1338) /* Initialise SCTP socket and bind to all interfaces
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1339) * On error caller must run dlm_close_sock() for the
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1340) * listen connection socket.
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1341) */
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1342) static int sctp_listen_for_all(struct listen_connection *con)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1343) {
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1344) struct socket *sock = NULL;
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1345) int result = -EINVAL;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1346)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1347) log_print("Using SCTP for communications");
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1348)
eeb1bd5c40edb fs/dlm/lowcomms.c (Eric W. Biederman 2015-05-08 21:08:05 -0500 1349) result = sock_create_kern(&init_net, dlm_local_addr[0]->ss_family,
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1350) SOCK_STREAM, IPPROTO_SCTP, &sock);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1351) if (result < 0) {
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1352) log_print("Can't create comms socket, check SCTP is loaded");
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1353) goto out;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1354) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1355)
26cfabf9cdd27 fs/dlm/lowcomms.c (Christoph Hellwig 2020-05-28 07:12:16 +0200 1356) sock_set_rcvbuf(sock->sk, NEEDED_RMEM);
a5b7ab6352bfa fs/dlm/lowcomms.c (Alexander Aring 2020-06-26 13:26:49 -0400 1357) sock_set_mark(sock->sk, dlm_config.ci_mark);
40ef92c6ec09b fs/dlm/lowcomms.c (Christoph Hellwig 2020-05-29 14:09:40 +0200 1358) sctp_sock_set_nodelay(sock->sk);
86e92ad299fb0 fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:14 -0500 1359)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1360) add_listen_sock(sock, con);
b81171cb68691 fs/dlm/lowcomms.c (Bob Peterson 2016-02-05 14:39:02 -0500 1361)
ee44b4bc054af fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:23 -0300 1362) /* Bind to all addresses. */
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1363) result = sctp_bind_addrs(con->sock, dlm_config.ci_tcp_port);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1364) if (result < 0)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1365) goto out;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1366)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1367) result = sock->ops->listen(sock, 5);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1368) if (result < 0) {
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1369) log_print("Can't set socket listening");
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1370) goto out;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1371) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1372)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1373) return 0;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1374)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1375) out:
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1376) return result;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1377) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1378)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1379) static int tcp_listen_for_all(void)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1380) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1381) /* We don't support multi-homed hosts */
1a26bfafbce0f fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:26 -0500 1382) if (dlm_local_count > 1) {
617e82e10ccf9 fs/dlm/lowcomms.c (David Teigland 2007-04-26 13:46:49 -0500 1383) log_print("TCP protocol can't handle multi-homed hosts, "
617e82e10ccf9 fs/dlm/lowcomms.c (David Teigland 2007-04-26 13:46:49 -0500 1384) "try SCTP");
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1385) return -EINVAL;
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1386) }
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1387)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1388) log_print("Using TCP for communications");
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1389)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1390) return tcp_create_listen_sock(&listen_con, dlm_local_addr[0]);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1391) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1392)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1393)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1394)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1395) static struct writequeue_entry *new_writequeue_entry(struct connection *con,
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1396) gfp_t allocation)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1397) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1398) struct writequeue_entry *entry;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1399)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1400) entry = kzalloc(sizeof(*entry), allocation);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1401) if (!entry)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1402) return NULL;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1403)
e1a7cbce53f65 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:15 -0500 1404) entry->page = alloc_page(allocation | __GFP_ZERO);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1405) if (!entry->page) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1406) kfree(entry);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1407) return NULL;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1408) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1409)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1410) entry->con = con;
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1411) entry->users = 1;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1412)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1413) return entry;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1414) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1415)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1416) static struct writequeue_entry *new_wq_entry(struct connection *con, int len,
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1417) gfp_t allocation, char **ppc)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1418) {
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1419) struct writequeue_entry *e;
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1420)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1421) spin_lock(&con->writequeue_lock);
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1422) if (!list_empty(&con->writequeue)) {
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1423) e = list_last_entry(&con->writequeue, struct writequeue_entry, list);
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1424) if (DLM_WQ_REMAIN_BYTES(e) >= len) {
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1425) *ppc = page_address(e->page) + e->end;
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1426) e->end += len;
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1427) e->users++;
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1428) spin_unlock(&con->writequeue_lock);
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1429)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1430) return e;
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1431) }
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1432) }
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1433) spin_unlock(&con->writequeue_lock);
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1434)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1435) e = new_writequeue_entry(con, allocation);
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1436) if (!e)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1437) return NULL;
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1438)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1439) *ppc = page_address(e->page);
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1440) e->end += len;
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1441) atomic_inc(&con->writequeue_cnt);
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1442)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1443) spin_lock(&con->writequeue_lock);
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1444) list_add_tail(&e->list, &con->writequeue);
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1445) spin_unlock(&con->writequeue_lock);
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1446)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1447) return e;
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1448) };
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1449)
617e82e10ccf9 fs/dlm/lowcomms.c (David Teigland 2007-04-26 13:46:49 -0500 1450) void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1451) {
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1452) struct writequeue_entry *e;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1453) struct connection *con;
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1454) int idx;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1455)
c45674fbdda13 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:14 -0500 1456) if (len > DEFAULT_BUFFER_SIZE ||
c45674fbdda13 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:14 -0500 1457) len < sizeof(struct dlm_header)) {
c45674fbdda13 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:14 -0500 1458) BUILD_BUG_ON(PAGE_SIZE < DEFAULT_BUFFER_SIZE);
692f51c8cbe75 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:18 -0500 1459) log_print("failed to allocate a buffer of size %d", len);
c45674fbdda13 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:14 -0500 1460) WARN_ON(1);
692f51c8cbe75 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:18 -0500 1461) return NULL;
692f51c8cbe75 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:18 -0500 1462) }
692f51c8cbe75 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:18 -0500 1463)
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1464) idx = srcu_read_lock(&connections_srcu);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1465) con = nodeid2con(nodeid, allocation);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1466) if (!con) {
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1467) srcu_read_unlock(&connections_srcu, idx);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1468) return NULL;
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1469) }
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1470)
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1471) e = new_wq_entry(con, len, allocation, ppc);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1472) if (!e) {
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1473) srcu_read_unlock(&connections_srcu, idx);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1474) return NULL;
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1475) }
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1476)
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1477) /* we assume if successful commit must called */
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1478) e->idx = idx;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1479)
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1480) return e;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1481) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1482)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1483) void dlm_lowcomms_commit_buffer(void *mh)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1484) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1485) struct writequeue_entry *e = (struct writequeue_entry *)mh;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1486) struct connection *con = e->con;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1487) int users;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1488)
4edde74eedb8b fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-02 17:08:54 +0000 1489) spin_lock(&con->writequeue_lock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1490) users = --e->users;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1491) if (users)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1492) goto out;
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1493)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1494) e->len = DLM_WQ_LENGTH_BYTES(e);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1495) spin_unlock(&con->writequeue_lock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1496)
01da24d3fbed9 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:14 +0000 1497) queue_work(send_workqueue, &con->swork);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1498) srcu_read_unlock(&connections_srcu, e->idx);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1499) return;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1500)
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1501) out:
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1502) spin_unlock(&con->writequeue_lock);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1503) srcu_read_unlock(&connections_srcu, e->idx);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1504) return;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1505) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1506)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1507) /* Send a message */
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1508) static void send_to_sock(struct connection *con)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1509) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1510) int ret = 0;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1511) const int msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1512) struct writequeue_entry *e;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1513) int len, offset;
f92c8dd7a0eb1 fs/dlm/lowcomms.c (Bob Peterson 2010-11-12 11:15:20 -0600 1514) int count = 0;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1515)
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 1516) mutex_lock(&con->sock_mutex);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1517) if (con->sock == NULL)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1518) goto out_connect;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1519)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1520) spin_lock(&con->writequeue_lock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1521) for (;;) {
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1522) if (list_empty(&con->writequeue))
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1523) break;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1524)
f0747ebf48f36 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:16 -0500 1525) e = list_first_entry(&con->writequeue, struct writequeue_entry, list);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1526) len = e->len;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1527) offset = e->offset;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1528) BUG_ON(len == 0 && e->users == 0);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1529) spin_unlock(&con->writequeue_lock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1530)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1531) ret = 0;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1532) if (len) {
1329e3f2c898c fs/dlm/lowcomms.c (Paolo Bonzini 2009-08-24 13:18:04 -0500 1533) ret = kernel_sendpage(con->sock, e->page, offset, len,
1329e3f2c898c fs/dlm/lowcomms.c (Paolo Bonzini 2009-08-24 13:18:04 -0500 1534) msg_flags);
d66f8277f5340 fs/dlm/lowcomms.c (Patrick Caulfield 2007-09-14 08:49:21 +0100 1535) if (ret == -EAGAIN || ret == 0) {
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 1536) if (ret == -EAGAIN &&
9cd3e072b0be1 fs/dlm/lowcomms.c (Eric Dumazet 2015-11-29 20:03:10 -0800 1537) test_bit(SOCKWQ_ASYNC_NOSPACE, &con->sock->flags) &&
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 1538) !test_and_set_bit(CF_APP_LIMITED, &con->flags)) {
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 1539) /* Notify TCP that we're limited by the
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 1540) * application window size.
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 1541) */
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 1542) set_bit(SOCK_NOSPACE, &con->sock->flags);
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 1543) con->sock->sk->sk_write_pending++;
b36930dd508e0 fs/dlm/lowcomms.c (David Miller 2010-11-10 21:56:39 -0800 1544) }
d66f8277f5340 fs/dlm/lowcomms.c (Patrick Caulfield 2007-09-14 08:49:21 +0100 1545) cond_resched();
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1546) goto out;
9c5bef5849c9f fs/dlm/lowcomms.c (Ying Xue 2012-08-13 14:29:55 +0800 1547) } else if (ret < 0)
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 1548) goto out;
d66f8277f5340 fs/dlm/lowcomms.c (Patrick Caulfield 2007-09-14 08:49:21 +0100 1549) }
f92c8dd7a0eb1 fs/dlm/lowcomms.c (Bob Peterson 2010-11-12 11:15:20 -0600 1550)
f92c8dd7a0eb1 fs/dlm/lowcomms.c (Bob Peterson 2010-11-12 11:15:20 -0600 1551) /* Don't starve people filling buffers */
f92c8dd7a0eb1 fs/dlm/lowcomms.c (Bob Peterson 2010-11-12 11:15:20 -0600 1552) if (++count >= MAX_SEND_MSG_COUNT) {
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1553) cond_resched();
f92c8dd7a0eb1 fs/dlm/lowcomms.c (Bob Peterson 2010-11-12 11:15:20 -0600 1554) count = 0;
f92c8dd7a0eb1 fs/dlm/lowcomms.c (Bob Peterson 2010-11-12 11:15:20 -0600 1555) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1556)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1557) spin_lock(&con->writequeue_lock);
5d6898714fe2c fs/dlm/lowcomms.c (Mike Christie 2013-06-14 04:56:13 -0500 1558) writequeue_entry_complete(e, ret);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1559) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1560) spin_unlock(&con->writequeue_lock);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1561)
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1562) /* close if we got EOF */
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1563) if (test_and_clear_bit(CF_EOF, &con->flags)) {
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1564) mutex_unlock(&con->sock_mutex);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1565) close_connection(con, false, false, true);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1566)
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1567) /* handling for tcp shutdown */
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1568) clear_bit(CF_SHUTDOWN, &con->flags);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1569) wake_up(&con->shutdown_wait);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1570) } else {
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1571) mutex_unlock(&con->sock_mutex);
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1572) }
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1573)
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1574) return;
871166f159b36 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:39 -0400 1575)
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1576) out:
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 1577) mutex_unlock(&con->sock_mutex);
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1578) return;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1579)
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1580) out_connect:
f1f1c1ccf7848 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-24 11:17:59 +0000 1581) mutex_unlock(&con->sock_mutex);
01da24d3fbed9 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:14 +0000 1582) queue_work(send_workqueue, &con->swork);
01da24d3fbed9 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:14 +0000 1583) cond_resched();
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1584) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1585)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1586) static void clean_one_writequeue(struct connection *con)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1587) {
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1588) struct writequeue_entry *e, *safe;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1589)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1590) spin_lock(&con->writequeue_lock);
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1591) list_for_each_entry_safe(e, safe, &con->writequeue, list) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1592) list_del(&e->list);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1593) free_entry(e);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1594) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1595) spin_unlock(&con->writequeue_lock);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1596) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1597)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1598) /* Called from recovery when it knows that a node has
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1599) left the cluster */
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1600) int dlm_lowcomms_close(int nodeid)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1601) {
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1602) struct connection *con;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1603) struct dlm_node_addr *na;
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1604) int idx;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1605)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1606) log_print("closing connection to node %d", nodeid);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1607) idx = srcu_read_lock(&connections_srcu);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1608) con = nodeid2con(nodeid, 0);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1609) if (con) {
063c4c99630c0 fs/dlm/lowcomms.c (Lars Marowsky-Bree 2009-08-11 16:18:23 -0500 1610) set_bit(CF_CLOSE, &con->flags);
0d737a8cfd834 fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:21 -0300 1611) close_connection(con, true, true, true);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1612) clean_one_writequeue(con);
53a5edaa05c10 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:19 -0500 1613) if (con->othercon)
53a5edaa05c10 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:19 -0500 1614) clean_one_writequeue(con->othercon);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1615) }
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1616) srcu_read_unlock(&connections_srcu, idx);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1617)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1618) spin_lock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1619) na = find_node_addr(nodeid);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1620) if (na) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1621) list_del(&na->list);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1622) while (na->addr_count--)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1623) kfree(na->addr[na->addr_count]);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1624) kfree(na);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1625) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1626) spin_unlock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1627)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1628) return 0;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1629) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1630)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1631) /* Receive workqueue function */
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1632) static void process_recv_sockets(struct work_struct *work)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1633) {
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1634) struct connection *con = container_of(work, struct connection, rwork);
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1635) int err;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1636)
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1637) clear_bit(CF_READ_PENDING, &con->flags);
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1638) do {
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1639) err = receive_from_sock(con);
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1640) } while (!err);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1641) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1642)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1643) static void process_listen_recv_socket(struct work_struct *work)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1644) {
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1645) accept_from_sock(&listen_con);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1646) }
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1647)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1648) /* Send workqueue function */
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1649) static void process_send_sockets(struct work_struct *work)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1650) {
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1651) struct connection *con = container_of(work, struct connection, swork);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1652)
8a4abb0819769 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:16 +0000 1653) clear_bit(CF_WRITE_PENDING, &con->flags);
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 1654)
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 1655) if (test_and_clear_bit(CF_RECONNECT, &con->flags))
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 1656) close_connection(con, false, false, true);
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 1657)
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 1658) if (con->sock == NULL) { /* not mutex protected so check it inside too */
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 1659) if (test_and_clear_bit(CF_DELAY_CONNECT, &con->flags))
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 1660) msleep(1000);
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1661) con->connect_action(con);
18e5651e39a5b fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:37 -0400 1662) }
01da24d3fbed9 fs/dlm/lowcomms.c (Bob Peterson 2017-09-12 08:55:14 +0000 1663) if (!list_empty(&con->writequeue))
063c4c99630c0 fs/dlm/lowcomms.c (Lars Marowsky-Bree 2009-08-11 16:18:23 -0500 1664) send_to_sock(con);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1665) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1666)
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1667) static void work_stop(void)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1668) {
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1669) if (recv_workqueue) {
b355516f45070 fs/dlm/lowcomms.c (David Windsor 2019-04-02 08:37:10 -0400 1670) destroy_workqueue(recv_workqueue);
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1671) recv_workqueue = NULL;
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1672) }
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1673)
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1674) if (send_workqueue) {
b355516f45070 fs/dlm/lowcomms.c (David Windsor 2019-04-02 08:37:10 -0400 1675) destroy_workqueue(send_workqueue);
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1676) send_workqueue = NULL;
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1677) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1678) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1679)
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1680) static int work_start(void)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1681) {
e43f055a95372 fs/dlm/lowcomms.c (David Teigland 2011-03-10 13:22:34 -0600 1682) recv_workqueue = alloc_workqueue("dlm_recv",
e43f055a95372 fs/dlm/lowcomms.c (David Teigland 2011-03-10 13:22:34 -0600 1683) WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
b9d4105279438 fs/dlm/lowcomms.c (Namhyung Kim 2010-12-13 13:42:24 -0600 1684) if (!recv_workqueue) {
b9d4105279438 fs/dlm/lowcomms.c (Namhyung Kim 2010-12-13 13:42:24 -0600 1685) log_print("can't start dlm_recv");
b9d4105279438 fs/dlm/lowcomms.c (Namhyung Kim 2010-12-13 13:42:24 -0600 1686) return -ENOMEM;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1687) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1688)
e43f055a95372 fs/dlm/lowcomms.c (David Teigland 2011-03-10 13:22:34 -0600 1689) send_workqueue = alloc_workqueue("dlm_send",
e43f055a95372 fs/dlm/lowcomms.c (David Teigland 2011-03-10 13:22:34 -0600 1690) WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
b9d4105279438 fs/dlm/lowcomms.c (Namhyung Kim 2010-12-13 13:42:24 -0600 1691) if (!send_workqueue) {
b9d4105279438 fs/dlm/lowcomms.c (Namhyung Kim 2010-12-13 13:42:24 -0600 1692) log_print("can't start dlm_send");
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1693) destroy_workqueue(recv_workqueue);
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1694) recv_workqueue = NULL;
b9d4105279438 fs/dlm/lowcomms.c (Namhyung Kim 2010-12-13 13:42:24 -0600 1695) return -ENOMEM;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1696) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1697)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1698) return 0;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1699) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1700)
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1701) static void shutdown_conn(struct connection *con)
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1702) {
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1703) if (con->shutdown_action)
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1704) con->shutdown_action(con);
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1705) }
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1706)
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1707) void dlm_lowcomms_shutdown(void)
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1708) {
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1709) int idx;
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1710)
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1711) /* Set all the flags to prevent any
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1712) * socket activity.
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1713) */
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1714) dlm_allow_conn = 0;
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1715)
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1716) if (recv_workqueue)
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1717) flush_workqueue(recv_workqueue);
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1718) if (send_workqueue)
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1719) flush_workqueue(send_workqueue);
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1720)
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1721) dlm_close_sock(&listen_con.sock);
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1722)
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1723) idx = srcu_read_lock(&connections_srcu);
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1724) foreach_conn(shutdown_conn);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1725) srcu_read_unlock(&connections_srcu, idx);
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1726) }
9d232469bcd77 fs/dlm/lowcomms.c (Alexander Aring 2021-03-01 17:05:20 -0500 1727)
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1728) static void _stop_conn(struct connection *con, bool and_other)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1729) {
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1730) mutex_lock(&con->sock_mutex);
173a31fe2b23b fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:24 +0000 1731) set_bit(CF_CLOSE, &con->flags);
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1732) set_bit(CF_READ_PENDING, &con->flags);
8a4abb0819769 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:16 +0000 1733) set_bit(CF_WRITE_PENDING, &con->flags);
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 1734) if (con->sock && con->sock->sk) {
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 1735) write_lock_bh(&con->sock->sk->sk_callback_lock);
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1736) con->sock->sk->sk_user_data = NULL;
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 1737) write_unlock_bh(&con->sock->sk->sk_callback_lock);
93eaadebe9e1c fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:55 +0000 1738) }
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1739) if (con->othercon && and_other)
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1740) _stop_conn(con->othercon, false);
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1741) mutex_unlock(&con->sock_mutex);
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1742) }
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1743)
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1744) static void stop_conn(struct connection *con)
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1745) {
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1746) _stop_conn(con, true);
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1747) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1748)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 1749) static void connection_release(struct rcu_head *rcu)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 1750) {
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 1751) struct connection *con = container_of(rcu, struct connection, rcu);
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 1752)
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 1753) kfree(con->rx_buf);
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 1754) kfree(con);
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 1755) }
4798cbbfbd00c fs/dlm/lowcomms.c (Alexander Aring 2020-09-24 10:31:26 -0400 1756)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1757) static void free_conn(struct connection *con)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1758) {
0d737a8cfd834 fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2015-08-11 19:22:21 -0300 1759) close_connection(con, true, true, true);
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 1760) spin_lock(&connections_lock);
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 1761) hlist_del_rcu(&con->list);
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 1762) spin_unlock(&connections_lock);
948c47e9bcb6a fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:53 -0400 1763) if (con->othercon) {
948c47e9bcb6a fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:53 -0400 1764) clean_one_writequeue(con->othercon);
5cbec208dc994 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:16 -0500 1765) call_srcu(&connections_srcu, &con->othercon->rcu,
5cbec208dc994 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:16 -0500 1766) connection_release);
948c47e9bcb6a fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:53 -0400 1767) }
0de984323ac56 fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:52 -0400 1768) clean_one_writequeue(con);
5cbec208dc994 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:16 -0500 1769) call_srcu(&connections_srcu, &con->rcu, connection_release);
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1770) }
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1771)
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1772) static void work_flush(void)
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1773) {
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1774) int ok;
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1775) int i;
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1776) struct connection *con;
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1777)
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1778) do {
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1779) ok = 1;
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1780) foreach_conn(stop_conn);
b355516f45070 fs/dlm/lowcomms.c (David Windsor 2019-04-02 08:37:10 -0400 1781) if (recv_workqueue)
b355516f45070 fs/dlm/lowcomms.c (David Windsor 2019-04-02 08:37:10 -0400 1782) flush_workqueue(recv_workqueue);
b355516f45070 fs/dlm/lowcomms.c (David Windsor 2019-04-02 08:37:10 -0400 1783) if (send_workqueue)
b355516f45070 fs/dlm/lowcomms.c (David Windsor 2019-04-02 08:37:10 -0400 1784) flush_workqueue(send_workqueue);
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1785) for (i = 0; i < CONN_HASH_SIZE && ok; i++) {
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 1786) hlist_for_each_entry_rcu(con, &connection_hash[i],
a47666eb763cc fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:49 -0400 1787) list) {
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1788) ok &= test_bit(CF_READ_PENDING, &con->flags);
8a4abb0819769 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:16 +0000 1789) ok &= test_bit(CF_WRITE_PENDING, &con->flags);
8a4abb0819769 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:16 +0000 1790) if (con->othercon) {
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1791) ok &= test_bit(CF_READ_PENDING,
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1792) &con->othercon->flags);
8a4abb0819769 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:16 +0000 1793) ok &= test_bit(CF_WRITE_PENDING,
8a4abb0819769 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:16 +0000 1794) &con->othercon->flags);
8a4abb0819769 fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 09:01:16 +0000 1795) }
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1796) }
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1797) }
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1798) } while (!ok);
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1799) }
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1800)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1801) void dlm_lowcomms_stop(void)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1802) {
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1803) int idx;
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1804)
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1805) idx = srcu_read_lock(&connections_srcu);
f0fb83cb9201a fs/dlm/lowcomms.c (tsutomu.owa@toshiba.co.jp 2017-09-12 08:55:40 +0000 1806) work_flush();
3a8db79889ce1 fs/dlm/lowcomms.c (Marcelo Ricardo Leitner 2016-10-08 10:14:37 -0300 1807) foreach_conn(free_conn);
7ae861bbfa0f6 fs/dlm/lowcomms.c (Alexander Aring 2021-05-21 15:08:35 -0400 1808) srcu_read_unlock(&connections_srcu, idx);
1d6e8131cf006 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2007-01-15 14:33:34 +0000 1809) work_stop();
043697f030c5c fs/dlm/lowcomms.c (Alexander Aring 2020-08-27 15:02:50 -0400 1810) deinit_local();
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1811) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1812)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1813) int dlm_lowcomms_start(void)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1814) {
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1815) int error = -EINVAL;
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1816) int i;
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1817)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1818) for (i = 0; i < CONN_HASH_SIZE; i++)
5e9ccc372dc85 fs/dlm/lowcomms.c (Christine Caulfield 2009-01-28 12:57:40 -0600 1819) INIT_HLIST_HEAD(&connection_hash[i]);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1820)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1821) init_local();
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1822) if (!dlm_local_count) {
617e82e10ccf9 fs/dlm/lowcomms.c (David Teigland 2007-04-26 13:46:49 -0500 1823) error = -ENOTCONN;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1824) log_print("no local IP address has been set");
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 1825) goto fail;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1826) }
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1827)
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1828) INIT_WORK(&listen_con.rwork, process_listen_recv_socket);
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1829)
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 1830) error = work_start();
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 1831) if (error)
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1832) goto fail_local;
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 1833)
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 1834) dlm_allow_conn = 1;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1835)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1836) /* Start listening */
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1837) if (dlm_config.ci_protocol == 0)
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1838) error = tcp_listen_for_all();
6ed7257b46709 fs/dlm/lowcomms.c (Patrick Caulfield 2007-04-17 15:39:57 +0100 1839) else
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1840) error = sctp_listen_for_all(&listen_con);
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1841) if (error)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1842) goto fail_unlisten;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1843)
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1844) return 0;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1845)
ac33d07105955 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-12-06 15:10:37 +0000 1846) fail_unlisten:
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 1847) dlm_allow_conn = 0;
d11ccd451b655 fs/dlm/lowcomms.c (Alexander Aring 2020-11-02 20:04:25 -0500 1848) dlm_close_sock(&listen_con.sock);
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1849) work_stop();
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1850) fail_local:
087f6c68e2ba6 fs/dlm/lowcomms.c (Alexander Aring 2021-06-02 09:45:15 -0400 1851) deinit_local();
513ef596d43cc fs/dlm/lowcomms.c (David Teigland 2012-03-30 11:46:08 -0500 1852) fail:
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1853) return error;
fdda387f73947 fs/dlm/lowcomms-tcp.c (Patrick Caulfield 2006-11-02 11:19:21 -0500 1854) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1855)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1856) void dlm_lowcomms_exit(void)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1857) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1858) struct dlm_node_addr *na, *safe;
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1859)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1860) spin_lock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1861) list_for_each_entry_safe(na, safe, &dlm_node_addrs, list) {
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1862) list_del(&na->list);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1863) while (na->addr_count--)
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1864) kfree(na->addr[na->addr_count]);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1865) kfree(na);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1866) }
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1867) spin_unlock(&dlm_node_addrs_spin);
36b71a8bfbc92 fs/dlm/lowcomms.c (David Teigland 2012-07-26 12:44:30 -0500 1868) }
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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