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authorEric Dumazet <edumazet@google.com>2015-07-08 14:28:30 -0700
committerDavid S. Miller <davem@davemloft.net>2015-07-09 15:12:20 -0700
commitdbe7faa4045ea83a37b691b12bb02a8f86c2d2e9 (patch)
tree4c7b8918dbe2c4caacd120deffe2e8a8235d9561 /net/ipv4
parentfc01538f9fb75572c969ca9988176ffc2a8741d6 (diff)
downloadop-kernel-dev-dbe7faa4045ea83a37b691b12bb02a8f86c2d2e9.zip
op-kernel-dev-dbe7faa4045ea83a37b691b12bb02a8f86c2d2e9.tar.gz
inet: inet_twsk_deschedule factorization
inet_twsk_deschedule() calls are followed by inet_twsk_put(). Only particular case is in inet_twsk_purge() but there is no point to defer the inet_twsk_put() after re-enabling BH. Lets rename inet_twsk_deschedule() to inet_twsk_deschedule_put() and move the inet_twsk_put() inside. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/inet_hashtables.c9
-rw-r--r--net/ipv4/inet_timewait_sock.c13
-rw-r--r--net/ipv4/tcp_ipv4.c3
-rw-r--r--net/ipv4/tcp_minisocks.c6
4 files changed, 14 insertions, 17 deletions
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index e588403..f8b3701 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -380,8 +380,7 @@ static int __inet_check_established(struct inet_timewait_death_row *death_row,
*twp = tw;
} else if (tw) {
/* Silly. Should hash-dance instead... */
- inet_twsk_deschedule(tw);
- inet_twsk_put(tw);
+ inet_twsk_deschedule_put(tw);
}
return 0;
@@ -558,10 +557,8 @@ ok:
inet_twsk_bind_unhash(tw, hinfo);
spin_unlock(&head->lock);
- if (tw) {
- inet_twsk_deschedule(tw);
- inet_twsk_put(tw);
- }
+ if (tw)
+ inet_twsk_deschedule_put(tw);
ret = 0;
goto out;
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index 92cd4d5..ae22cc2 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -205,13 +205,17 @@ EXPORT_SYMBOL_GPL(inet_twsk_alloc);
* tcp_input.c to verify this.
*/
-/* This is for handling early-kills of TIME_WAIT sockets. */
-void inet_twsk_deschedule(struct inet_timewait_sock *tw)
+/* This is for handling early-kills of TIME_WAIT sockets.
+ * Warning : consume reference.
+ * Caller should not access tw anymore.
+ */
+void inet_twsk_deschedule_put(struct inet_timewait_sock *tw)
{
if (del_timer_sync(&tw->tw_timer))
inet_twsk_kill(tw);
+ inet_twsk_put(tw);
}
-EXPORT_SYMBOL(inet_twsk_deschedule);
+EXPORT_SYMBOL(inet_twsk_deschedule_put);
void inet_twsk_schedule(struct inet_timewait_sock *tw, const int timeo)
{
@@ -281,9 +285,8 @@ restart:
rcu_read_unlock();
local_bh_disable();
- inet_twsk_deschedule(tw);
+ inet_twsk_deschedule_put(tw);
local_bh_enable();
- inet_twsk_put(tw);
goto restart_rcu;
}
/* If the nulls value we got at the end of this lookup is
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index d7d4c2b..486ba96 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1683,8 +1683,7 @@ do_time_wait:
iph->daddr, th->dest,
inet_iif(skb));
if (sk2) {
- inet_twsk_deschedule(inet_twsk(sk));
- inet_twsk_put(inet_twsk(sk));
+ inet_twsk_deschedule_put(inet_twsk(sk));
sk = sk2;
goto process;
}
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 4bc00cb..6d8795b 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -147,8 +147,7 @@ tcp_timewait_state_process(struct inet_timewait_sock *tw, struct sk_buff *skb,
if (!th->fin ||
TCP_SKB_CB(skb)->end_seq != tcptw->tw_rcv_nxt + 1) {
kill_with_rst:
- inet_twsk_deschedule(tw);
- inet_twsk_put(tw);
+ inet_twsk_deschedule_put(tw);
return TCP_TW_RST;
}
@@ -198,8 +197,7 @@ kill_with_rst:
*/
if (sysctl_tcp_rfc1337 == 0) {
kill:
- inet_twsk_deschedule(tw);
- inet_twsk_put(tw);
+ inet_twsk_deschedule_put(tw);
return TCP_TW_SUCCESS;
}
}
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