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author | Christoph Paasch <christoph.paasch@uclouvain.be> | 2014-07-29 13:40:57 +0200 |
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committer | Willy Tarreau <w@1wt.eu> | 2014-11-23 10:55:42 +0100 |
commit | 9063b87d25f1dbf3f3e0b91ab84b08b99b53ce4f (patch) | |
tree | ef5c1434a3af1b821a9ea4bf0b7d1acbac65843b /drivers | |
parent | 8b2de953aafa1fc799c0ca1e48ca615f884d9bc0 (diff) |
tcp: Fix integer-overflow in TCP vegas
[ Upstream commit 1f74e613ded11517db90b2bd57e9464d9e0fb161 ]
In vegas we do a multiplication of the cwnd and the rtt. This
may overflow and thus their result is stored in a u64. However, we first
need to cast the cwnd so that actually 64-bit arithmetic is done.
Then, we need to do do_div to allow this to be used on 32-bit arches.
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Doug Leith <doug.leith@nuim.ie>
Fixes: 8d3a564da34e (tcp: tcp_vegas cong avoid fix)
Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions