From: Quentin Armitage <quentin@armitage.org.uk>
To: Wensong Zhang <wensong@linux-vs.org>,
Simon Horman <horms@verge.net.au>, Julian Anastasov <ja@ssi.bg>,
Pablo Neira Ayuso <pablo@netfilter.org>,
Patrick McHardy <kaber@trash.net>,
Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, lvs-devel@vger.kernel.org,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
linux-kernel@vger.kernel.org
Cc: Quentin Armitage <quentin@armitage.org.uk>
Subject: [PATCH 1/5] ipvs: Enable setting IPv6 multicast address for ipvs sync daemon backup
Date: Tue, 14 Jun 2016 02:43:29 +0100 [thread overview]
Message-ID: <1465868613-26146-2-git-send-email-quentin@armitage.org.uk> (raw)
In-Reply-To: <1465868613-26146-1-git-send-email-quentin@armitage.org.uk>
When using HEAD from https://git.kernel.org/cgit/utils/kernel/ipvsadm/ipvsadm.git/,
the command:
ipvsadm --start-daemon backup --mcast-interface eth0.60 --mcast-group ff01::1:81
fails with the error message:
Argument list too long
whereas both:
ipvsadm --start-daemon master --mcast-interface eth0.60 --mcast-group ff01::1:81
and:
ipvsadm --start-daemon backup --mcast-interface eth0.60 --mcast-group 224.0.0.81
are successful.
The error message "Argument list too long" isn't helpful. The error occurs
because an IPv6 address is given in backup mode.
The error is in make_receive_sock() in net/netfilter/ipvs/ip_vs_sync.c, since
it fails to set the interface on the address or the socket before calling
inet6_bind() (via sock->ops->bind), where the test 'if (!sk->sk_bound_dev_if)'
failed.
Setting sin6_scope_id on the sockaddr before calling inet6_bind() resolves
the issue.
Signed-off-by: Quentin Armitage <quentin@armitage.org.uk>
---
net/netfilter/ipvs/ip_vs_sync.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index 803001a..85b48f1 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -1545,7 +1545,7 @@ error:
/*
* Set up receiving multicast socket over UDP
*/
-static struct socket *make_receive_sock(struct netns_ipvs *ipvs, int id)
+static struct socket *make_receive_sock(struct netns_ipvs *ipvs, int id, int ifindex)
{
/* multicast addr */
union ipvs_sockaddr mcast_addr;
@@ -1566,6 +1566,7 @@ static struct socket *make_receive_sock(struct netns_ipvs *ipvs, int id)
set_sock_size(sock->sk, 0, result);
get_mcast_sockaddr(&mcast_addr, &salen, &ipvs->bcfg, id);
+ ((struct sockaddr_in6 *)&mcast_addr)->sin6_scope_id = ifindex;
result = sock->ops->bind(sock, (struct sockaddr *)&mcast_addr, salen);
if (result < 0) {
pr_err("Error binding to the multicast addr\n");
@@ -1868,7 +1869,7 @@ int start_sync_thread(struct netns_ipvs *ipvs, struct ipvs_sync_daemon_cfg *c,
if (state == IP_VS_STATE_MASTER)
sock = make_send_sock(ipvs, id);
else
- sock = make_receive_sock(ipvs, id);
+ sock = make_receive_sock(ipvs, id, dev->ifindex);
if (IS_ERR(sock)) {
result = PTR_ERR(sock);
goto outtinfo;
--
1.7.7.6
next prev parent reply other threads:[~2016-06-14 1:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-14 1:43 [PATCH 0/5] ipvs: fix backup sync daemon with IPv6, and minor updates Quentin Armitage
2016-06-14 1:43 ` Quentin Armitage [this message]
2016-06-14 1:43 ` [PATCH 2/5] ipvs: Stop calling __dev_get_by_name() repeatedly when starting sync daemon Quentin Armitage
2016-06-14 2:14 ` kbuild test robot
2016-06-14 1:43 ` [PATCH 3/5] ipvs: Don't check result < 0 after setting result = 0 Quentin Armitage
2016-06-14 1:43 ` [PATCH 4/5] ipvs: Lock socket before setting SK_CAN_REUSE Quentin Armitage
2016-06-14 3:12 ` Eric Dumazet
2016-06-14 3:18 ` Eric Dumazet
2016-06-14 1:43 ` [PATCH 5/5] ipvs: log additional sync daemon parameters Quentin Armitage
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=1465868613-26146-2-git-send-email-quentin@armitage.org.uk \
--to=quentin@armitage.org.uk \
--cc=coreteam@netfilter.org \
--cc=davem@davemloft.net \
--cc=horms@verge.net.au \
--cc=ja@ssi.bg \
--cc=kaber@trash.net \
--cc=kadlec@blackhole.kfki.hu \
--cc=linux-kernel@vger.kernel.org \
--cc=lvs-devel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=netfilter-devel@vger.kernel.org \
--cc=pablo@netfilter.org \
--cc=wensong@linux-vs.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).