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| author | Jon Paul Maloy <jon.maloy@ericsson.com> | 2015-02-08 17:10:50 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-08 22:09:25 +0100 |
| commit | 51a00daf7369b581e5241c5cae5924886deda261 (patch) | |
| tree | a2dbbaa21bba03e86ac8bf58a7aedd4f5f2ddd2b /net/tipc/socket.c | |
| parent | rt6_probe_deferred: Do not depend on struct ordering (diff) | |
| download | linux-51a00daf7369b581e5241c5cae5924886deda261.tar.xz linux-51a00daf7369b581e5241c5cae5924886deda261.zip | |
tipc: fix bug in socket reception function
In commit c637c1035534867b85b78b453c38c495b58e2c5a ("tipc: resolve race
problem at unicast message reception") we introduced a time limit
for how long the function tipc_sk_eneque() would be allowed to execute
its loop. Unfortunately, the test for when this limit is passed was put
in the wrong place, resulting in a lost message when the test is true.
We fix this by moving the test to before we dequeue the next buffer
from the input queue.
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/socket.c')
| -rw-r--r-- | net/tipc/socket.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 66666805b53c..4a98d15a1323 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1802,12 +1802,11 @@ static int tipc_sk_enqueue(struct sk_buff_head *inputq, struct sock *sk, unsigned long time_limit = jiffies + 2; while (skb_queue_len(inputq)) { + if (unlikely(time_after_eq(jiffies, time_limit))) + return TIPC_OK; skb = tipc_skb_dequeue(inputq, dport); if (unlikely(!skb)) return TIPC_OK; - /* Return if softirq window exhausted */ - if (unlikely(time_after_eq(jiffies, time_limit))) - return TIPC_OK; if (!sock_owned_by_user(sk)) { err = filter_rcv(sk, &skb); if (likely(!skb)) |