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authorJoel Stanley <joel@jms.id.au>2016-02-02 13:23:36 +1100
committerJoel Stanley <joel@jms.id.au>2016-02-02 13:23:42 +1100
commitf3f4aeb9ea8954c0da3cf0d12693f9a57f1f4ac7 (patch)
tree3663ab29736373c565d88e941162d37311cc3c75 /net/ipv4/tcp_input.c
parent2a3f5f14fdf2e8fb680af168fa642ef8a9218ffb (diff)
parent849a2d3d9be31368559e6852cf64d749e6903818 (diff)
downloadtalos-obmc-linux-openbmc-20160202-1.tar.gz
talos-obmc-linux-openbmc-20160202-1.zip
Merge tag 'v4.3.5' into dev-4.3openbmc-20160202-1
This is the 4.3.5 stable release Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'net/ipv4/tcp_input.c')
-rw-r--r--net/ipv4/tcp_input.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 0a2b61dbcd4e..064f1a0bef6d 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2525,6 +2525,9 @@ static void tcp_cwnd_reduction(struct sock *sk, const int prior_unsacked,
int newly_acked_sacked = prior_unsacked -
(tp->packets_out - tp->sacked_out);
+ if (newly_acked_sacked <= 0 || WARN_ON_ONCE(!tp->prior_cwnd))
+ return;
+
tp->prr_delivered += newly_acked_sacked;
if (delta < 0) {
u64 dividend = (u64)tp->snd_ssthresh * tp->prr_delivered +
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