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authorDavid S. Miller <davem@davemloft.net>2016-01-06 22:54:18 -0500
committerDavid S. Miller <davem@davemloft.net>2016-01-06 22:54:18 -0500
commit9e0efaf6b41bf22c2eb81258fc2a6f1538a643e5 (patch)
treee2daa5fb47f707f44b6b7e9da82a6d8017af3f8c /net/ipv4/tcp_input.c
parentc7f5d105495a38ed09e70d825f75d9d7d5407264 (diff)
parent51cb67c0b0fcb91581b15bd2e85f29af4d4b2df6 (diff)
downloadop-kernel-dev-9e0efaf6b41bf22c2eb81258fc2a6f1538a643e5.zip
op-kernel-dev-9e0efaf6b41bf22c2eb81258fc2a6f1538a643e5.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
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 7b1fddc..0003d40 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2478,6 +2478,9 @@ 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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