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Date: Tue, 12 Nov 2013 09:57:14 +0100 From: Steffen Klassert <steffen.klassert@...unet.com> To: David Miller <davem@...emloft.net> Cc: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>, netdev@...r.kernel.org Subject: [PATCH net] neigh: Force garbage collection if an entry is deleted administratively Since git commit 2724680 ("neigh: Keep neighbour cache entries if number of them is small enough."), we keep all neighbour cache entries if the number is below a threshold. But if we now delete an entry administratively and then try to replace this by a permanent one, we get -EEXIST because the old entry ist still in the table (in NUD_FAILED state). So lets force a garbage collect if we delete an entry administratively. Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com> --- net/core/neighbour.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 6072610..ec20880 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -1659,6 +1659,8 @@ static int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh) NEIGH_UPDATE_F_OVERRIDE | NEIGH_UPDATE_F_ADMIN); neigh_release(neigh); + + neigh_forced_gc(tbl); goto out; } read_unlock(&neigh_tbl_lock); -- 1.7.9.5 -- 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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