netdev - [PATCH net-next 04/10] ipip: always notify change when params are updated

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Message-Id: <1352906047-11604-5-git-send-email-nicolas.dichtel@6wind.com>
Date:	Wed, 14 Nov 2012 16:14:01 +0100
From:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, eric.dumazet@...il.com,
	Nicolas Dichtel <nicolas.dichtel@...nd.com>
Subject: [PATCH net-next 04/10] ipip: always notify change when params are updated

netdev_state_change() was called only when end points or link was updated. Now
that all parameters are advertised via netlink, we must advertise any change.

This patch also prepares the support of ipip tunnels management via rtnl. The
code which update tunnels will be put in a new function.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
---
 net/ipv4/ipip.c | 34 ++++++++++++++++------------------
 1 file changed, 16 insertions(+), 18 deletions(-)

diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 720855e..40984fa 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -699,29 +699,27 @@ ipip_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
 					break;
 				}
 				t = netdev_priv(dev);
-				ipip_tunnel_unlink(ipn, t);
-				synchronize_net();
-				t->parms.iph.saddr = p.iph.saddr;
-				t->parms.iph.daddr = p.iph.daddr;
-				memcpy(dev->dev_addr, &p.iph.saddr, 4);
-				memcpy(dev->broadcast, &p.iph.daddr, 4);
-				ipip_tunnel_link(ipn, t);
-				netdev_state_change(dev);
 			}
+
+			ipip_tunnel_unlink(ipn, t);
+			synchronize_net();
+			t->parms.iph.saddr = p.iph.saddr;
+			t->parms.iph.daddr = p.iph.daddr;
+			memcpy(dev->dev_addr, &p.iph.saddr, 4);
+			memcpy(dev->broadcast, &p.iph.daddr, 4);
+			ipip_tunnel_link(ipn, t);
+			t->parms.iph.ttl = p.iph.ttl;
+			t->parms.iph.tos = p.iph.tos;
+			t->parms.iph.frag_off = p.iph.frag_off;
+			if (t->parms.link != p.link) {
+				t->parms.link = p.link;
+				ipip_tunnel_bind_dev(dev);
+			}
+			netdev_state_change(dev);
 		}
 
 		if (t) {
 			err = 0;
-			if (cmd == SIOCCHGTUNNEL) {
-				t->parms.iph.ttl = p.iph.ttl;
-				t->parms.iph.tos = p.iph.tos;
-				t->parms.iph.frag_off = p.iph.frag_off;
-				if (t->parms.link != p.link) {
-					t->parms.link = p.link;
-					ipip_tunnel_bind_dev(dev);
-					netdev_state_change(dev);
-				}
-			}
 			if (copy_to_user(ifr->ifr_ifru.ifru_data, &t->parms, sizeof(p)))
 				err = -EFAULT;
 		} else
-- 
1.7.12

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