tcp: make sure xmit goal size never becomes zero

[safe/jmp/linux-2.6] / net / ipv4 / devinet.c

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 309997e..126bb91 100644 (file)
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1075,6 +1075,14 @@ static int inetdev_event(struct notifier_block *this, unsigned long event,
                        }
                }
                ip_mc_up(in_dev);
+               /* fall through */
+       case NETDEV_CHANGEADDR:
+               if (IN_DEV_ARP_NOTIFY(in_dev))
+                       arp_send(ARPOP_REQUEST, ETH_P_ARP,
+                                in_dev->ifa_list->ifa_address,
+                                dev,
+                                in_dev->ifa_list->ifa_address,
+                                NULL, dev->dev_addr, NULL);
                break;
        case NETDEV_DOWN:
                ip_mc_down(in_dev);
@@ -1208,7 +1216,8 @@ static void rtmsg_ifa(int event, struct in_ifaddr *ifa, struct nlmsghdr *nlh,
                kfree_skb(skb);
                goto errout;
        }
-       err = rtnl_notify(skb, net, pid, RTNLGRP_IPV4_IFADDR, nlh, GFP_KERNEL);
+       rtnl_notify(skb, net, pid, RTNLGRP_IPV4_IFADDR, nlh, GFP_KERNEL);
+       return;
 errout:
        if (err < 0)
                rtnl_set_sk_err(net, RTNLGRP_IPV4_IFADDR, err);
@@ -1439,6 +1448,7 @@ static struct devinet_sysctl_table {
                DEVINET_SYSCTL_RW_ENTRY(ARP_ANNOUNCE, "arp_announce"),
                DEVINET_SYSCTL_RW_ENTRY(ARP_IGNORE, "arp_ignore"),
                DEVINET_SYSCTL_RW_ENTRY(ARP_ACCEPT, "arp_accept"),
+               DEVINET_SYSCTL_RW_ENTRY(ARP_NOTIFY, "arp_notify"),
 
                DEVINET_SYSCTL_FLUSHING_ENTRY(NOXFRM, "disable_xfrm"),
                DEVINET_SYSCTL_FLUSHING_ENTRY(NOPOLICY, "disable_policy"),