From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Julius R. Volz" Subject: [PATCH 22/26] IPVS: Add function to find out if IPv6 address is local. Date: Wed, 11 Jun 2008 19:12:05 +0200 Message-ID: <1213204329-10973-23-git-send-email-juliusv@google.com> References: <1213204329-10973-1-git-send-email-juliusv@google.com> Cc: horms@verge.net.au, davem@davemloft.net, vbusam@google.com To: lvs-devel@vger.kernel.org, netdev@vger.kernel.org Return-path: Received: from smtp-out.google.com ([216.239.33.17]:14519 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757880AbYFKRMn (ORCPT ); Wed, 11 Jun 2008 13:12:43 -0400 In-Reply-To: <1213204329-10973-1-git-send-email-juliusv@google.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Vince Busam Add __ip_vs_addr_is_local_v6() to find out if an IPv6 address belongs to a local interface. This function is used to decide whether to set the IP_VS_CONN_F_LOCALNODE flag for IPv6 destinations. Signed-off-by: Vince Busam 1 files changed, 30 insertions(+), 3 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index da2e431..cf52034 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -92,6 +92,23 @@ int ip_vs_get_debug_level(void) } #endif +#ifdef CONFIG_IP_VS_IPV6 +/* Taken from rt6_fill_node() in net/ipv6/route.c, is there a better way? */ +static int __ip_vs_addr_is_local_v6(const struct in6_addr *addr) { + struct rt6_info *rt; + struct flowi fl = { + .oif = 0, + .nl_u = { + .ip6_u = { + .daddr = *addr, + .saddr = { .s6_addr32 = {0, 0, 0, 0} }, } }, + }; + if ((rt = (struct rt6_info *)ip6_route_output(&init_net, NULL, &fl))) + if (rt->rt6i_dev && (rt->rt6i_dev->flags&IFF_LOOPBACK)) + return 1; + return 0; +} +#endif /* * update_defense_level is called from keventd and from sysctl, * so it needs to protect itself from softirqs @@ -708,9 +725,19 @@ __ip_vs_update_dest(struct ip_vs_service *svc, conn_flags = udest->conn_flags | IP_VS_CONN_F_INACTIVE; /* check if local node and update the flags */ - if (inet_addr_type(&init_net, udest->addr) == RTN_LOCAL) { - conn_flags = (conn_flags & ~IP_VS_CONN_F_FWD_MASK) - | IP_VS_CONN_F_LOCALNODE; +#ifdef CONFIG_IP_VS_IPV6 + if (svc->af == AF_INET6) { + if (__ip_vs_addr_is_local_v6(&udest->addr.v6)) { + conn_flags = (conn_flags & ~IP_VS_CONN_F_FWD_MASK) + | IP_VS_CONN_F_LOCALNODE; + } + } +#endif + if (svc->af == AF_INET) { + if (inet_addr_type(&init_net, udest->addr.v4) == RTN_LOCAL) { + conn_flags = (conn_flags & ~IP_VS_CONN_F_FWD_MASK) + | IP_VS_CONN_F_LOCALNODE; + } } /* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */ -- 1.5.3.6