From: "Timo Teräs" <timo.teras@iki.fi>
To: netdev@vger.kernel.org
Cc: "Timo Teräs" <timo.teras@iki.fi>
Subject: [PATCH net-next 2/2] arp: flush arp cache on IFF_NOARP change
Date: Thu, 23 May 2013 12:58:29 +0300 [thread overview]
Message-ID: <1369303109-12003-2-git-send-email-timo.teras@iki.fi> (raw)
In-Reply-To: <1369303109-12003-1-git-send-email-timo.teras@iki.fi>
IFF_NOARP affects what kind of neighbor entries are created
(nud NOARP or nud INCOMPLETE). If the flag changes, flush the arp
cache to refresh all entries.
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
---
net/ipv4/arp.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 247ec19..0a15fb7 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -1241,6 +1241,10 @@ static int arp_netdev_event(struct notifier_block *this, unsigned long event,
neigh_changeaddr(&arp_tbl, dev);
rt_cache_flush(dev_net(dev));
break;
+ case NETDEV_CHANGE:
+ if (dev->flags_changed & IFF_NOARP)
+ neigh_changeaddr(&arp_tbl, dev);
+ break;
default:
break;
}
--
1.8.2.3
next prev parent reply other threads:[~2013-05-23 9:57 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-23 9:58 [PATCH net-next 1/2] net: inform NETDEV_CHANGE callbacks which flags were changed Timo Teräs
2013-05-23 9:58 ` Timo Teräs [this message]
2013-05-23 10:23 ` [PATCH net-next 2/2] arp: flush arp cache on IFF_NOARP change David Laight
2013-05-23 12:01 ` Timo Teras
2013-05-23 16:31 ` [PATCH net-next 1/2] net: inform NETDEV_CHANGE callbacks which flags were changed Ben Hutchings
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1369303109-12003-2-git-send-email-timo.teras@iki.fi \
--to=timo.teras@iki.fi \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).