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(parent: 7c6ae61) | patch
tcp: zero ca_priv area when switching cc algorithms
authorFlorian Westphal <fw@strlen.de>
Mon, 21 Nov 2016 09:08:37 +0000 (10:08 +0100)
committerDavid S. Miller <davem@davemloft.net>
Mon, 21 Nov 2016 18:13:56 +0000 (13:13 -0500)
commit7082c5c3f2407c52022507ffaf644dbbab97a883
tree11b22cf7efa89d4ee5f657f451616340bd290a31tree | snapshot
parent7c6ae610a1f0a9d3cebf790e0245b4e0f76aa86ecommit | diff
tcp: zero ca_priv area when switching cc algorithms

We need to zero out the private data area when application switches
connection to different algorithm (TCP_CONGESTION setsockopt).

When congestion ops get assigned at connect time everything is already
zeroed because sk_alloc uses GFP_ZERO flag.  But in the setsockopt case
this contains whatever previous cc placed there.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp_cong.c diff | blob | history
Domain: System / Kernel;