diff options
| author | Vince Busam <vbusam@google.com> | 2008-09-02 17:55:52 +0400 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2008-09-05 05:17:12 +0400 |
| commit | 09571c7ae30865adfa79dccd12a822a65d2c4b5a (patch) | |
| tree | 4a6b129d70b8dab77bb8f80fff98d9827a5a06ef | |
| parent | a0eb662f9ec8962928d937a185ad128db12c4637 (diff) | |
| download | linux-09571c7ae30865adfa79dccd12a822a65d2c4b5a.tar.xz | |
IPVS: Add function to determine if IPv6 address is local
Add __ip_vs_addr_is_local_v6() to find out if an IPv6 address belongs to a
local interface. Use this function to decide whether to set the
IP_VS_CONN_F_LOCALNODE flag for IPv6 destinations.
Signed-off-by: Vince Busam <vbusam@google.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
| -rw-r--r-- | net/ipv4/ipvs/ip_vs_ctl.c | 56 |
1 files changed, 49 insertions, 7 deletions
diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c index 25d9e98e31fa..640203a153c6 100644 --- a/net/ipv4/ipvs/ip_vs_ctl.c +++ b/net/ipv4/ipvs/ip_vs_ctl.c @@ -35,6 +35,10 @@ #include <net/net_namespace.h> #include <net/ip.h> +#ifdef CONFIG_IP_VS_IPV6 +#include <net/ipv6.h> +#include <net/ip6_route.h> +#endif #include <net/route.h> #include <net/sock.h> #include <net/genetlink.h> @@ -91,6 +95,26 @@ 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} }, } }, + }; + + rt = (struct rt6_info *)ip6_route_output(&init_net, NULL, &fl); + if (rt && 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 @@ -751,10 +775,18 @@ __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.ip) == 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.in6)) { + conn_flags = (conn_flags & ~IP_VS_CONN_F_FWD_MASK) + | IP_VS_CONN_F_LOCALNODE; + } + } else +#endif + if (inet_addr_type(&init_net, udest->addr.ip) == 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 */ if ((conn_flags & IP_VS_CONN_F_FWD_MASK) != 0) { @@ -803,9 +835,19 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest, EnterFunction(2); - atype = inet_addr_type(&init_net, udest->addr.ip); - if (atype != RTN_LOCAL && atype != RTN_UNICAST) - return -EINVAL; +#ifdef CONFIG_IP_VS_IPV6 + if (svc->af == AF_INET6) { + atype = ipv6_addr_type(&udest->addr.in6); + if (!(atype & IPV6_ADDR_UNICAST) && + !__ip_vs_addr_is_local_v6(&udest->addr.in6)) + return -EINVAL; + } else +#endif + { + atype = inet_addr_type(&init_net, udest->addr.ip); + if (atype != RTN_LOCAL && atype != RTN_UNICAST) + return -EINVAL; + } dest = kzalloc(sizeof(struct ip_vs_dest), GFP_ATOMIC); if (dest == NULL) { |