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Commit d01ff0a0 authored by Peter Pan(潘卫平)'s avatar Peter Pan(潘卫平) Committed by David S. Miller
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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: default avatarWeiping Pan <panweiping3@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1ee5fa1e

net/ipv4/devinet.c

+5 −0
Original line number Diff line number Diff line
@@ -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;