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| author | Xi Wang <xi.wang@gmail.com> | 2011-12-16 16:44:15 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-20 01:25:46 +0400 |
| commit | 2692ba61a82203404abd7dd2a027bda962861f74 (patch) | |
| tree | e39f21131faf42ada263c1969cfa200af2f4b0f9 /net/sctp/protocol.c | |
| parent | 2ca6cf06d988fea21e812a86be79353352677c9c (diff) | |
| download | linux-2692ba61a82203404abd7dd2a027bda962861f74.tar.xz | |
sctp: fix incorrect overflow check on autoclose
Commit 8ffd3208 voids the previous patches f6778aab and 810c0719 for
limiting the autoclose value. If userspace passes in -1 on 32-bit
platform, the overflow check didn't work and autoclose would be set
to 0xffffffff.
This patch defines a max_autoclose (in seconds) for limiting the value
and exposes it through sysctl, with the following intentions.
1) Avoid overflowing autoclose * HZ.
2) Keep the default autoclose bound consistent across 32- and 64-bit
platforms (INT_MAX / HZ in this patch).
3) Keep the autoclose value consistent between setsockopt() and
getsockopt() calls.
Suggested-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/protocol.c')
| -rw-r--r-- | net/sctp/protocol.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 61b9fca5a173..6f6ad8686833 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -1285,6 +1285,9 @@ SCTP_STATIC __init int sctp_init(void) sctp_max_instreams = SCTP_DEFAULT_INSTREAMS; sctp_max_outstreams = SCTP_DEFAULT_OUTSTREAMS; + /* Initialize maximum autoclose timeout. */ + sctp_max_autoclose = INT_MAX / HZ; + /* Initialize handle used for association ids. */ idr_init(&sctp_assocs_id); |