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Date: Fri, 2 Dec 2011 09:47:06 +0800 From: Weiping Pan <panweiping3@...il.com> To: unlisted-recipients:; (no To-header on input) Cc: Weiping Pan <panweiping3@...il.com>, "David S. Miller" <davem@...emloft.net> (maintainer:NETWORKING [IPv4/...), Alexey Kuznetsov <kuznet@....inr.ac.ru> (maintainer:NETWORKING [IPv4/...), James Morris <jmorris@...ei.org> (maintainer:NETWORKING [IPv4/...), Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org> (maintainer:NETWORKING [IPv4/...), Patrick McHardy <kaber@...sh.net> (maintainer:NETWORKING [IPv4/...), netdev@...r.kernel.org (open list:NETWORKING [IPv4/...), linux-kernel@...r.kernel.org (open list) Subject: [PATCH] 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@...il.com> --- 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 c6b5092..65f01dc 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; -- 1.7.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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