From: Dan Carpenter <dan.carpenter@oracle•com>
To: stable@vger•kernel.org
Cc: Greg Kroah-Hartman <greg@kroah•com>, Zhu Yi <yi.zhu@intel•com>,
netdev@vger•kernel.org, Eric Dumazet <eric.dumazet@gmail•com>
Subject: [patch 6/8 2.6.32] tcp: use limited socket backlog
Date: Sun, 13 Nov 2011 23:19:11 +0300 [thread overview]
Message-ID: <20111113201911.GG1362@elgon.mountain> (raw)
In-Reply-To: <20111113201336.GA1362@elgon.mountain>
This applied without changes to the original patch.
>From 6b03a53a5ab7ccf2d5d69f96cf1c739c4d2a8fb9 Mon Sep 17 00:00:00 2001
From: Zhu Yi <yi.zhu@intel•com>
Date: Thu, 4 Mar 2010 18:01:41 +0000
Subject: [PATCH] tcp: use limited socket backlog
Make tcp adapt to the limited socket backlog change.
Cc: "David S. Miller" <davem@davemloft•net>
Cc: Alexey Kuznetsov <kuznet@ms2•inr.ac.ru>
Cc: "Pekka Savola (ipv6)" <pekkas@netcore•fi>
Cc: Patrick McHardy <kaber@trash•net>
Signed-off-by: Zhu Yi <yi.zhu@intel•com>
Acked-by: Eric Dumazet <eric.dumazet@gmail•com>
Signed-off-by: David S. Miller <davem@davemloft•net>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle•com>
---
net/ipv4/tcp_ipv4.c | 6 ++++--
net/ipv6/tcp_ipv6.c | 6 ++++--
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index c3588b4..4baf194 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1682,8 +1682,10 @@ process:
if (!tcp_prequeue(sk, skb))
ret = tcp_v4_do_rcv(sk, skb);
}
- } else
- sk_add_backlog(sk, skb);
+ } else if (sk_add_backlog_limited(sk, skb)) {
+ bh_unlock_sock(sk);
+ goto discard_and_relse;
+ }
bh_unlock_sock(sk);
sock_put(sk);
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 6963a6b..c4ea9d5 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1740,8 +1740,10 @@ process:
if (!tcp_prequeue(sk, skb))
ret = tcp_v6_do_rcv(sk, skb);
}
- } else
- sk_add_backlog(sk, skb);
+ } else if (sk_add_backlog_limited(sk, skb)) {
+ bh_unlock_sock(sk);
+ goto discard_and_relse;
+ }
bh_unlock_sock(sk);
sock_put(sk);
--
1.7.8.rc0.dirty
next prev parent reply other threads:[~2011-11-13 20:19 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-13 20:13 [patch 0/8 2.6.32] CVE-2010-4251: packet backlog can get too large Dan Carpenter
2011-11-13 20:17 ` [patch 2/8 2.6.32] udp: use limited socket backlog Dan Carpenter
2011-11-13 20:18 ` [patch 3/8 2.6.32] x25: " Dan Carpenter
2011-11-13 20:18 ` [patch 4/8 2.6.32] sctp: " Dan Carpenter
2011-11-13 20:18 ` [patch 5/8 2.6.32] tipc: " Dan Carpenter
2011-11-13 20:19 ` Dan Carpenter [this message]
2011-11-13 20:19 ` [patch 7/8 2.6.32] llc: " Dan Carpenter
2011-11-13 20:19 ` [patch 8/8 2.6.32] net: backlog functions rename Dan Carpenter
2011-11-13 20:58 ` [patch 0/8 2.6.32] CVE-2010-4251: packet backlog can get too large David Miller
2011-11-13 23:29 ` Ben Hutchings
2011-11-14 3:24 ` David Miller
2011-11-14 18:11 ` Greg KH
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