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| author | Peter Pan(潘卫平) <panweiping3@gmail.com> | 2011-12-01 15:47:06 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-01 21:46:12 -0500 |
| commit | d01ff0a049f749e0bf10a35bb23edd012718c8c2 (patch) | |
| tree | 84525ced20b7a48c17d26d73cd79dc86ee045738 | |
| parent | 1ee5fa1e9970a16036e37c7b9d5ce81c778252fc (diff) | |
| download | linux-d01ff0a049f749e0bf10a35bb23edd012718c8c2.tar.bz2 | |
ipv4: flush route cache after change accept_local
After reset ipv4_devconf->data[IPV4_DEVCONF_ACCEPT_LOCAL] to 0,
we should flush route cache, or it will continue receive packets with local
source address, which should be dropped.
Signed-off-by: Weiping Pan <panweiping3@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/devinet.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index c6b5092f29a1..65f01dc47565 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1490,7 +1490,9 @@ static int devinet_conf_proc(ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { + int old_value = *(int *)ctl->data; int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); + int new_value = *(int *)ctl->data; if (write) { struct ipv4_devconf *cnf = ctl->extra1; @@ -1501,6 +1503,9 @@ static int devinet_conf_proc(ctl_table *ctl, int write, if (cnf == net->ipv4.devconf_dflt) devinet_copy_dflt_conf(net, i); + if (i == IPV4_DEVCONF_ACCEPT_LOCAL - 1) + if ((new_value == 0) && (old_value != 0)) + rt_cache_flush(net, 0); } return ret; |