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Diffstat (limited to 'net/tipc/socket.c')
-rw-r--r--net/tipc/socket.c193
1 files changed, 142 insertions, 51 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index b542f14ed444..41688da233ab 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -75,6 +75,7 @@ struct sockaddr_pair {
* @conn_instance: TIPC instance used when connection was established
* @published: non-zero if port has one or more associated names
* @max_pkt: maximum packet size "hint" used when building messages sent by port
+ * @maxnagle: maximum size of msg which can be subject to nagle
* @portid: unique port identity in TIPC socket hash table
* @phdr: preformatted message header used when sending messages
* #cong_links: list of congested links
@@ -97,6 +98,7 @@ struct tipc_sock {
u32 conn_instance;
int published;
u32 max_pkt;
+ u32 maxnagle;
u32 portid;
struct tipc_msg phdr;
struct list_head cong_links;
@@ -116,6 +118,10 @@ struct tipc_sock {
struct tipc_mc_method mc_method;
struct rcu_head rcu;
struct tipc_group *group;
+ u32 oneway;
+ u16 snd_backlog;
+ bool expect_ack;
+ bool nodelay;
bool group_is_open;
};
@@ -137,6 +143,7 @@ static int tipc_sk_insert(struct tipc_sock *tsk);
static void tipc_sk_remove(struct tipc_sock *tsk);
static int __tipc_sendstream(struct socket *sock, struct msghdr *m, size_t dsz);
static int __tipc_sendmsg(struct socket *sock, struct msghdr *m, size_t dsz);
+static void tipc_sk_push_backlog(struct tipc_sock *tsk);
static const struct proto_ops packet_ops;
static const struct proto_ops stream_ops;
@@ -227,6 +234,26 @@ static u16 tsk_inc(struct tipc_sock *tsk, int msglen)
return 1;
}
+/* tsk_set_nagle - enable/disable nagle property by manipulating maxnagle
+ */
+static void tsk_set_nagle(struct tipc_sock *tsk)
+{
+ struct sock *sk = &tsk->sk;
+
+ tsk->maxnagle = 0;
+ if (sk->sk_type != SOCK_STREAM)
+ return;
+ if (tsk->nodelay)
+ return;
+ if (!(tsk->peer_caps & TIPC_NAGLE))
+ return;
+ /* Limit node local buffer size to avoid receive queue overflow */
+ if (tsk->max_pkt == MAX_MSG_SIZE)
+ tsk->maxnagle = 1500;
+ else
+ tsk->maxnagle = tsk->max_pkt;
+}
+
/**
* tsk_advance_rx_queue - discard first buffer in socket receive queue
*
@@ -446,6 +473,7 @@ static int tipc_sk_create(struct net *net, struct socket *sock,
tsk = tipc_sk(sk);
tsk->max_pkt = MAX_PKT_DEFAULT;
+ tsk->maxnagle = 0;
INIT_LIST_HEAD(&tsk->publications);
INIT_LIST_HEAD(&tsk->cong_links);
msg = &tsk->phdr;
@@ -486,7 +514,7 @@ static int tipc_sk_create(struct net *net, struct socket *sock,
if (sock->type == SOCK_DGRAM)
tsk_set_unreliable(tsk, true);
}
-
+ __skb_queue_head_init(&tsk->mc_method.deferredq);
trace_tipc_sk_create(sk, NULL, TIPC_DUMP_NONE, " ");
return 0;
}
@@ -504,7 +532,7 @@ static void __tipc_shutdown(struct socket *sock, int error)
struct sock *sk = sock->sk;
struct tipc_sock *tsk = tipc_sk(sk);
struct net *net = sock_net(sk);
- long timeout = CONN_TIMEOUT_DEFAULT;
+ long timeout = msecs_to_jiffies(CONN_TIMEOUT_DEFAULT);
u32 dnode = tsk_peer_node(tsk);
struct sk_buff *skb;
@@ -512,7 +540,9 @@ static void __tipc_shutdown(struct socket *sock, int error)
tipc_wait_for_cond(sock, &timeout, (!tsk->cong_link_cnt &&
!tsk_conn_cong(tsk)));
- /* Remove any pending SYN message */
+ /* Push out delayed messages if in Nagle mode */
+ tipc_sk_push_backlog(tsk);
+ /* Remove pending SYN */
__skb_queue_purge(&sk->sk_write_queue);
/* Reject all unreceived messages, except on an active connection
@@ -582,6 +612,7 @@ static int tipc_release(struct socket *sock)
sk->sk_shutdown = SHUTDOWN_MASK;
tipc_sk_leave(tsk);
tipc_sk_withdraw(tsk, 0, NULL);
+ __skb_queue_purge(&tsk->mc_method.deferredq);
sk_stop_timer(sk, &sk->sk_timer);
tipc_sk_remove(tsk);
@@ -734,12 +765,12 @@ static __poll_t tipc_poll(struct file *file, struct socket *sock,
switch (sk->sk_state) {
case TIPC_ESTABLISHED:
- case TIPC_CONNECTING:
if (!tsk->cong_link_cnt && !tsk_conn_cong(tsk))
revents |= EPOLLOUT;
/* fall through */
case TIPC_LISTEN:
- if (!skb_queue_empty(&sk->sk_receive_queue))
+ case TIPC_CONNECTING:
+ if (!skb_queue_empty_lockless(&sk->sk_receive_queue))
revents |= EPOLLIN | EPOLLRDNORM;
break;
case TIPC_OPEN:
@@ -747,7 +778,7 @@ static __poll_t tipc_poll(struct file *file, struct socket *sock,
revents |= EPOLLOUT;
if (!tipc_sk_type_connectionless(sk))
break;
- if (skb_queue_empty(&sk->sk_receive_queue))
+ if (skb_queue_empty_lockless(&sk->sk_receive_queue))
break;
revents |= EPOLLIN | EPOLLRDNORM;
break;
@@ -808,7 +839,7 @@ static int tipc_sendmcast(struct socket *sock, struct tipc_name_seq *seq,
msg_set_nameupper(hdr, seq->upper);
/* Build message as chain of buffers */
- skb_queue_head_init(&pkts);
+ __skb_queue_head_init(&pkts);
rc = tipc_msg_build(hdr, msg, 0, dlen, mtu, &pkts);
/* Send message if build was successful */
@@ -852,8 +883,8 @@ static int tipc_send_group_msg(struct net *net, struct tipc_sock *tsk,
msg_set_grp_bc_seqno(hdr, bc_snd_nxt);
/* Build message as chain of buffers */
- skb_queue_head_init(&pkts);
- mtu = tipc_node_get_mtu(net, dnode, tsk->portid);
+ __skb_queue_head_init(&pkts);
+ mtu = tipc_node_get_mtu(net, dnode, tsk->portid, false);
rc = tipc_msg_build(hdr, m, 0, dlen, mtu, &pkts);
if (unlikely(rc != dlen))
return rc;
@@ -1057,7 +1088,7 @@ static int tipc_send_group_bcast(struct socket *sock, struct msghdr *m,
msg_set_grp_bc_ack_req(hdr, ack);
/* Build message as chain of buffers */
- skb_queue_head_init(&pkts);
+ __skb_queue_head_init(&pkts);
rc = tipc_msg_build(hdr, m, 0, dlen, mtu, &pkts);
if (unlikely(rc != dlen))
return rc;
@@ -1207,6 +1238,32 @@ void tipc_sk_mcast_rcv(struct net *net, struct sk_buff_head *arrvq,
tipc_sk_rcv(net, inputq);
}
+/* tipc_sk_push_backlog(): send accumulated buffers in socket write queue
+ * when socket is in Nagle mode
+ */
+static void tipc_sk_push_backlog(struct tipc_sock *tsk)
+{
+ struct sk_buff_head *txq = &tsk->sk.sk_write_queue;
+ struct net *net = sock_net(&tsk->sk);
+ u32 dnode = tsk_peer_node(tsk);
+ struct sk_buff *skb = skb_peek(txq);
+ int rc;
+
+ if (!skb || tsk->cong_link_cnt)
+ return;
+
+ /* Do not send SYN again after congestion */
+ if (msg_is_syn(buf_msg(skb)))
+ return;
+
+ tsk->snt_unacked += tsk->snd_backlog;
+ tsk->snd_backlog = 0;
+ tsk->expect_ack = true;
+ rc = tipc_node_xmit(net, txq, dnode, tsk->portid);
+ if (rc == -ELINKCONG)
+ tsk->cong_link_cnt = 1;
+}
+
/**
* tipc_sk_conn_proto_rcv - receive a connection mng protocol message
* @tsk: receiving socket
@@ -1220,7 +1277,7 @@ static void tipc_sk_conn_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb,
u32 onode = tsk_own_node(tsk);
struct sock *sk = &tsk->sk;
int mtyp = msg_type(hdr);
- bool conn_cong;
+ bool was_cong;
/* Ignore if connection cannot be validated: */
if (!tsk_peer_msg(tsk, hdr)) {
@@ -1253,11 +1310,13 @@ static void tipc_sk_conn_proto_rcv(struct tipc_sock *tsk, struct sk_buff *skb,
__skb_queue_tail(xmitq, skb);
return;
} else if (mtyp == CONN_ACK) {
- conn_cong = tsk_conn_cong(tsk);
+ was_cong = tsk_conn_cong(tsk);
+ tsk->expect_ack = false;
+ tipc_sk_push_backlog(tsk);
tsk->snt_unacked -= msg_conn_ack(hdr);
if (tsk->peer_caps & TIPC_BLOCK_FLOWCTL)
tsk->snd_win = msg_adv_win(hdr);
- if (conn_cong)
+ if (was_cong && !tsk_conn_cong(tsk))
sk->sk_write_space(sk);
} else if (mtyp != CONN_PROBE_REPLY) {
pr_warn("Received unknown CONN_PROTO msg\n");
@@ -1386,13 +1445,15 @@ static int __tipc_sendmsg(struct socket *sock, struct msghdr *m, size_t dlen)
if (unlikely(rc))
return rc;
- skb_queue_head_init(&pkts);
- mtu = tipc_node_get_mtu(net, dnode, tsk->portid);
+ __skb_queue_head_init(&pkts);
+ mtu = tipc_node_get_mtu(net, dnode, tsk->portid, false);
rc = tipc_msg_build(hdr, m, 0, dlen, mtu, &pkts);
if (unlikely(rc != dlen))
return rc;
- if (unlikely(syn && !tipc_msg_skb_clone(&pkts, &sk->sk_write_queue)))
+ if (unlikely(syn && !tipc_msg_skb_clone(&pkts, &sk->sk_write_queue))) {
+ __skb_queue_purge(&pkts);
return -ENOMEM;
+ }
trace_tipc_sk_sendmsg(sk, skb_peek(&pkts), TIPC_DUMP_SK_SNDQ, " ");
rc = tipc_node_xmit(net, &pkts, dnode, tsk->portid);
@@ -1436,15 +1497,15 @@ static int __tipc_sendstream(struct socket *sock, struct msghdr *m, size_t dlen)
struct sock *sk = sock->sk;
DECLARE_SOCKADDR(struct sockaddr_tipc *, dest, m->msg_name);
long timeout = sock_sndtimeo(sk, m->msg_flags & MSG_DONTWAIT);
+ struct sk_buff_head *txq = &sk->sk_write_queue;
struct tipc_sock *tsk = tipc_sk(sk);
struct tipc_msg *hdr = &tsk->phdr;
struct net *net = sock_net(sk);
- struct sk_buff_head pkts;
u32 dnode = tsk_peer_node(tsk);
+ int maxnagle = tsk->maxnagle;
+ int maxpkt = tsk->max_pkt;
int send, sent = 0;
- int rc = 0;
-
- skb_queue_head_init(&pkts);
+ int blocks, rc = 0;
if (unlikely(dlen > INT_MAX))
return -EMSGSIZE;
@@ -1466,21 +1527,35 @@ static int __tipc_sendstream(struct socket *sock, struct msghdr *m, size_t dlen)
tipc_sk_connected(sk)));
if (unlikely(rc))
break;
-
send = min_t(size_t, dlen - sent, TIPC_MAX_USER_MSG_SIZE);
- rc = tipc_msg_build(hdr, m, sent, send, tsk->max_pkt, &pkts);
- if (unlikely(rc != send))
- break;
-
- trace_tipc_sk_sendstream(sk, skb_peek(&pkts),
+ blocks = tsk->snd_backlog;
+ if (tsk->oneway++ >= 4 && send <= maxnagle) {
+ rc = tipc_msg_append(hdr, m, send, maxnagle, txq);
+ if (unlikely(rc < 0))
+ break;
+ blocks += rc;
+ if (blocks <= 64 && tsk->expect_ack) {
+ tsk->snd_backlog = blocks;
+ sent += send;
+ break;
+ }
+ tsk->expect_ack = true;
+ } else {
+ rc = tipc_msg_build(hdr, m, sent, send, maxpkt, txq);
+ if (unlikely(rc != send))
+ break;
+ blocks += tsk_inc(tsk, send + MIN_H_SIZE);
+ }
+ trace_tipc_sk_sendstream(sk, skb_peek(txq),
TIPC_DUMP_SK_SNDQ, " ");
- rc = tipc_node_xmit(net, &pkts, dnode, tsk->portid);
+ rc = tipc_node_xmit(net, txq, dnode, tsk->portid);
if (unlikely(rc == -ELINKCONG)) {
tsk->cong_link_cnt = 1;
rc = 0;
}
if (likely(!rc)) {
- tsk->snt_unacked += tsk_inc(tsk, send + MIN_H_SIZE);
+ tsk->snt_unacked += blocks;
+ tsk->snd_backlog = 0;
sent += send;
}
} while (sent < dlen && !rc);
@@ -1525,8 +1600,9 @@ static void tipc_sk_finish_conn(struct tipc_sock *tsk, u32 peer_port,
sk_reset_timer(sk, &sk->sk_timer, jiffies + CONN_PROBING_INTV);
tipc_set_sk_state(sk, TIPC_ESTABLISHED);
tipc_node_add_conn(net, peer_node, tsk->portid, peer_port);
- tsk->max_pkt = tipc_node_get_mtu(net, peer_node, tsk->portid);
+ tsk->max_pkt = tipc_node_get_mtu(net, peer_node, tsk->portid, true);
tsk->peer_caps = tipc_node_get_capabilities(net, peer_node);
+ tsk_set_nagle(tsk);
__skb_queue_purge(&sk->sk_write_queue);
if (tsk->peer_caps & TIPC_BLOCK_FLOWCTL)
return;
@@ -1804,7 +1880,7 @@ static int tipc_recvmsg(struct socket *sock, struct msghdr *m,
/* Send group flow control advertisement when applicable */
if (tsk->group && msg_in_group(hdr) && !grp_evt) {
- skb_queue_head_init(&xmitq);
+ __skb_queue_head_init(&xmitq);
tipc_group_update_rcv_win(tsk->group, tsk_blocks(hlen + dlen),
msg_orignode(hdr), msg_origport(hdr),
&xmitq);
@@ -1847,6 +1923,7 @@ static int tipc_recvstream(struct socket *sock, struct msghdr *m,
bool peek = flags & MSG_PEEK;
int offset, required, copy, copied = 0;
int hlen, dlen, err, rc;
+ bool ack = false;
long timeout;
/* Catch invalid receive attempts */
@@ -1891,6 +1968,7 @@ static int tipc_recvstream(struct socket *sock, struct msghdr *m,
/* Copy data if msg ok, otherwise return error/partial data */
if (likely(!err)) {
+ ack = msg_ack_required(hdr);
offset = skb_cb->bytes_read;
copy = min_t(int, dlen - offset, buflen - copied);
rc = skb_copy_datagram_msg(skb, hlen + offset, m, copy);
@@ -1918,7 +1996,7 @@ static int tipc_recvstream(struct socket *sock, struct msghdr *m,
/* Send connection flow control advertisement when applicable */
tsk->rcv_unacked += tsk_inc(tsk, hlen + dlen);
- if (unlikely(tsk->rcv_unacked >= tsk->rcv_win / TIPC_ACK_RATE))
+ if (ack || tsk->rcv_unacked >= tsk->rcv_win / TIPC_ACK_RATE)
tipc_sk_send_ack(tsk);
/* Exit if all requested data or FIN/error received */
@@ -1989,6 +2067,7 @@ static void tipc_sk_proto_rcv(struct sock *sk,
smp_wmb();
tsk->cong_link_cnt--;
wakeup = true;
+ tipc_sk_push_backlog(tsk);
break;
case GROUP_PROTOCOL:
tipc_group_proto_rcv(grp, &wakeup, hdr, inputq, xmitq);
@@ -2028,6 +2107,7 @@ static bool tipc_sk_filter_connect(struct tipc_sock *tsk, struct sk_buff *skb)
if (unlikely(msg_mcast(hdr)))
return false;
+ tsk->oneway = 0;
switch (sk->sk_state) {
case TIPC_CONNECTING:
@@ -2041,7 +2121,7 @@ static bool tipc_sk_filter_connect(struct tipc_sock *tsk, struct sk_buff *skb)
if (msg_data_sz(hdr))
return true;
/* Empty ACK-, - wake up sleeping connect() and drop */
- sk->sk_data_ready(sk);
+ sk->sk_state_change(sk);
msg_set_dest_droppable(hdr, 1);
return false;
}
@@ -2073,6 +2153,8 @@ static bool tipc_sk_filter_connect(struct tipc_sock *tsk, struct sk_buff *skb)
return true;
return false;
case TIPC_ESTABLISHED:
+ if (!skb_queue_empty(&sk->sk_write_queue))
+ tipc_sk_push_backlog(tsk);
/* Accept only connection-based messages sent by peer */
if (likely(con_msg && !err && pport == oport && pnode == onode))
return true;
@@ -2118,13 +2200,13 @@ static unsigned int rcvbuf_limit(struct sock *sk, struct sk_buff *skb)
struct tipc_msg *hdr = buf_msg(skb);
if (unlikely(msg_in_group(hdr)))
- return sk->sk_rcvbuf;
+ return READ_ONCE(sk->sk_rcvbuf);
if (unlikely(!msg_connected(hdr)))
- return sk->sk_rcvbuf << msg_importance(hdr);
+ return READ_ONCE(sk->sk_rcvbuf) << msg_importance(hdr);
if (likely(tsk->peer_caps & TIPC_BLOCK_FLOWCTL))
- return sk->sk_rcvbuf;
+ return READ_ONCE(sk->sk_rcvbuf);
return FLOWCTL_MSG_LIM;
}
@@ -2149,6 +2231,7 @@ static void tipc_sk_filter_rcv(struct sock *sk, struct sk_buff *skb,
struct tipc_msg *hdr = buf_msg(skb);
struct net *net = sock_net(sk);
struct sk_buff_head inputq;
+ int mtyp = msg_type(hdr);
int limit, err = TIPC_OK;
trace_tipc_sk_filter_rcv(sk, skb, TIPC_DUMP_ALL, " ");
@@ -2162,6 +2245,9 @@ static void tipc_sk_filter_rcv(struct sock *sk, struct sk_buff *skb,
if (unlikely(grp))
tipc_group_filter_msg(grp, &inputq, xmitq);
+ if (unlikely(!grp) && mtyp == TIPC_MCAST_MSG)
+ tipc_mcast_filter_msg(net, &tsk->mc_method.deferredq, &inputq);
+
/* Validate and add to receive buffer if there is space */
while ((skb = __skb_dequeue(&inputq))) {
hdr = buf_msg(skb);
@@ -2669,13 +2755,14 @@ static void tipc_sk_timeout(struct timer_list *t)
struct sk_buff_head list;
int rc = 0;
- skb_queue_head_init(&list);
+ __skb_queue_head_init(&list);
bh_lock_sock(sk);
/* Try again later if socket is busy */
if (sock_owned_by_user(sk)) {
sk_reset_timer(sk, &sk->sk_timer, jiffies + HZ / 20);
bh_unlock_sock(sk);
+ sock_put(sk);
return;
}
@@ -2799,7 +2886,7 @@ static struct tipc_sock *tipc_sk_lookup(struct net *net, u32 portid)
struct tipc_sock *tsk;
rcu_read_lock();
- tsk = rhashtable_lookup_fast(&tn->sk_rht, &portid, tsk_rht_params);
+ tsk = rhashtable_lookup(&tn->sk_rht, &portid, tsk_rht_params);
if (tsk)
sock_hold(&tsk->sk);
rcu_read_unlock();
@@ -2954,6 +3041,7 @@ static int tipc_setsockopt(struct socket *sock, int lvl, int opt,
case TIPC_SRC_DROPPABLE:
case TIPC_DEST_DROPPABLE:
case TIPC_CONN_TIMEOUT:
+ case TIPC_NODELAY:
if (ol < sizeof(value))
return -EINVAL;
if (get_user(value, (u32 __user *)ov))
@@ -3002,6 +3090,10 @@ static int tipc_setsockopt(struct socket *sock, int lvl, int opt,
case TIPC_GROUP_LEAVE:
res = tipc_sk_leave(tsk);
break;
+ case TIPC_NODELAY:
+ tsk->nodelay = !!value;
+ tsk_set_nagle(tsk);
+ break;
default:
res = -EINVAL;
}
@@ -3064,6 +3156,9 @@ static int tipc_getsockopt(struct socket *sock, int lvl, int opt,
case TIPC_SOCK_RECVQ_DEPTH:
value = skb_queue_len(&sk->sk_receive_queue);
break;
+ case TIPC_SOCK_RECVQ_USED:
+ value = sk_rmem_alloc_get(sk);
+ break;
case TIPC_GROUP_JOIN:
seq.type = 0;
if (tsk->group)
@@ -3264,7 +3359,7 @@ static int __tipc_nl_add_sk_con(struct sk_buff *skb, struct tipc_sock *tsk)
peer_node = tsk_peer_node(tsk);
peer_port = tsk_peer_port(tsk);
- nest = nla_nest_start(skb, TIPC_NLA_SOCK_CON);
+ nest = nla_nest_start_noflag(skb, TIPC_NLA_SOCK_CON);
if (!nest)
return -EMSGSIZE;
@@ -3323,7 +3418,7 @@ static int __tipc_nl_add_sk(struct sk_buff *skb, struct netlink_callback *cb,
if (!hdr)
goto msg_cancel;
- attrs = nla_nest_start(skb, TIPC_NLA_SOCK);
+ attrs = nla_nest_start_noflag(skb, TIPC_NLA_SOCK);
if (!attrs)
goto genlmsg_cancel;
@@ -3428,7 +3523,7 @@ int tipc_sk_fill_sock_diag(struct sk_buff *skb, struct netlink_callback *cb,
if (!(sk_filter_state & (1 << sk->sk_state)))
return 0;
- attrs = nla_nest_start(skb, TIPC_NLA_SOCK);
+ attrs = nla_nest_start_noflag(skb, TIPC_NLA_SOCK);
if (!attrs)
goto msg_cancel;
@@ -3446,7 +3541,7 @@ int tipc_sk_fill_sock_diag(struct sk_buff *skb, struct netlink_callback *cb,
TIPC_NLA_SOCK_PAD))
goto attr_msg_cancel;
- stat = nla_nest_start(skb, TIPC_NLA_SOCK_STAT);
+ stat = nla_nest_start_noflag(skb, TIPC_NLA_SOCK_STAT);
if (!stat)
goto attr_msg_cancel;
@@ -3503,7 +3598,7 @@ static int __tipc_nl_add_sk_publ(struct sk_buff *skb,
if (!hdr)
goto msg_cancel;
- attrs = nla_nest_start(skb, TIPC_NLA_PUBL);
+ attrs = nla_nest_start_noflag(skb, TIPC_NLA_PUBL);
if (!attrs)
goto genlmsg_cancel;
@@ -3580,19 +3675,15 @@ int tipc_nl_publ_dump(struct sk_buff *skb, struct netlink_callback *cb)
struct tipc_sock *tsk;
if (!tsk_portid) {
- struct nlattr **attrs;
+ struct nlattr **attrs = genl_dumpit_info(cb)->attrs;
struct nlattr *sock[TIPC_NLA_SOCK_MAX + 1];
- err = tipc_nlmsg_parse(cb->nlh, &attrs);
- if (err)
- return err;
-
if (!attrs[TIPC_NLA_SOCK])
return -EINVAL;
- err = nla_parse_nested(sock, TIPC_NLA_SOCK_MAX,
- attrs[TIPC_NLA_SOCK],
- tipc_nl_sock_policy, NULL);
+ err = nla_parse_nested_deprecated(sock, TIPC_NLA_SOCK_MAX,
+ attrs[TIPC_NLA_SOCK],
+ tipc_nl_sock_policy, NULL);
if (err)
return err;
@@ -3782,7 +3873,7 @@ int tipc_sk_dump(struct sock *sk, u16 dqueues, char *buf)
i += scnprintf(buf + i, sz - i, " %d", sk->sk_sndbuf);
i += scnprintf(buf + i, sz - i, " | %d", sk_rmem_alloc_get(sk));
i += scnprintf(buf + i, sz - i, " %d", sk->sk_rcvbuf);
- i += scnprintf(buf + i, sz - i, " | %d\n", sk->sk_backlog.len);
+ i += scnprintf(buf + i, sz - i, " | %d\n", READ_ONCE(sk->sk_backlog.len));
if (dqueues & TIPC_DUMP_SK_SNDQ) {
i += scnprintf(buf + i, sz - i, "sk_write_queue: ");
generated by cgit v1.2.3 (git 2.39.0) at 2025-12-16 18:44:40 +0300