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| author | Jun Zhao <mypopydev@gmail.com> | 2011-11-22 17:19:03 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-11-23 17:31:39 -0500 |
| commit | 685f94e6db8496399c881218018166515445a914 (patch) | |
| tree | 1eb51c364b0f8231d182500c63dbbe2ecf97dcec /net/ipv4/igmp.c | |
| parent | 4d0fe50c75a547088e4304e5eb5f521514dfae46 (diff) | |
| download | lwn-685f94e6db8496399c881218018166515445a914.tar.gz lwn-685f94e6db8496399c881218018166515445a914.zip | |
ipv4 : igmp : fix error handle in ip_mc_add_src()
When add sources to interface failure, need to roll back the sfcount[MODE]
to before state. We need to match it corresponding.
Acked-by: David L Stevens <dlstevens@us.ibm.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Jun Zhao <mypopydev@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/igmp.c')
| -rw-r--r-- | net/ipv4/igmp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index c7472eff2d51..b2ca095cb9da 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -1716,7 +1716,8 @@ static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode, if (err) { int j; - pmc->sfcount[sfmode]--; + if (!delta) + pmc->sfcount[sfmode]--; for (j=0; j<i; j++) (void) ip_mc_del1_src(pmc, sfmode, &psfsrc[j]); } else if (isexclude != (pmc->sfcount[MCAST_EXCLUDE] != 0)) { |