From: Jesper B. Christensen <[email protected]> Avoid having to re-solicit hw. addresses when configuring a ip-address the same subnet as the old ip-address. This will enable one to implement fast ip-failover.
Signed-off-by: Jesper B. Christensen <[email protected]> --- Changes v2: * Move code to selective deletion path * Split up assignment * missing rtdev_dereference --- diff --git a/stack/ipv4/af_inet.c b/stack/ipv4/af_inet.c index 8b394be..4464608 100644 --- a/stack/ipv4/af_inet.c +++ b/stack/ipv4/af_inet.c @@ -239,7 +239,21 @@ static void rt_ip_ifup(struct rtnet_device *rtdev, int i; - rt_ip_route_del_all(rtdev); /* cleanup routing table */ + /* Only delete our own address if the new address is + on the same subnet */ + if (rtdev->broadcast_ip == up_cmd->args.up.broadcast_ip) { + rt_ip_route_del_host(rtdev->local_ip, rtdev); + + /* Delete our loopback route for the device */ + tmp = rtdev_get_loopback(); + if (tmp != NULL) { + rt_ip_route_del_host(rtdev->local_ip, tmp); + rtdev_dereference(tmp); + } + } else { + rt_ip_route_del_all(rtdev); /* cleanup routing table */ + } + if (up_cmd->args.up.ip_addr != 0xFFFFFFFF) { rtdev->local_ip = up_cmd->args.up.ip_addr; -- /Jesper ------------------------------------------------------------------------------ Cloud Computing - Latest Buzzword or a Glimpse of the Future? This paper surveys cloud computing today: What are the benefits? Why are businesses embracing it? What are its payoffs and pitfalls? http://www.accelacomm.com/jaw/sdnl/114/51425149/ _______________________________________________ RTnet-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/rtnet-developers
