net 03/05: fib_rules: add oif classification

commit 68144d350f4f6c348659c825cde6a82b34c27a91
Author: Patrick McHardy <kaber@trash.net>
Date:   Thu Dec 3 12:05:25 2009 +0100

    net: fib_rules: add oif classification

    Support routing table lookup based on the flow's oif. This is useful to
    classify packets originating from sockets bound to interfaces differently.

    The route cache already includes the oif and needs no changes.

    Signed-off-by: Patrick McHardy <kaber@trash.net>

Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/fib_rules.h b/include/linux/fib_rules.h
index 7e11bb2fa65..51da65b68b8 100644
--- a/include/linux/fib_rules.h
+++ b/include/linux/fib_rules.h
@@ -10,6 +10,7 @@
 #define FIB_RULE_UNRESOLVED     0x00000004
 #define FIB_RULE_IIF_DETACHED   0x00000008
 #define FIB_RULE_DEV_DETACHED   FIB_RULE_IIF_DETACHED
+#define FIB_RULE_OIF_DETACHED   0x00000010
 
 /* try to find source address in routing lookups */
 #define FIB_RULE_FIND_SADDR     0x00010000
@@ -47,6 +48,7 @@ enum {
         FRA_UNUSED8,
         FRA_TABLE,      /* Extended table id */
         FRA_FWMASK,     /* mask for netfilter mark */
+        FRA_OIFNAME,
         __FRA_MAX
 };
 
diff --git a/include/net/fib_rules.h b/include/net/fib_rules.h
index 62bebcb2a51..d4e875a58f8 100644
--- a/include/net/fib_rules.h
+++ b/include/net/fib_rules.h
@@ -11,6 +11,7 @@ struct fib_rule {
         struct list_head        list;
         atomic_t                refcnt;
         int                     iifindex;
+        int                     oifindex;
         u32                     mark;
         u32                     mark_mask;
         u32                     pref;
@@ -20,6 +21,7 @@ struct fib_rule {
         u32                     target;
         struct fib_rule *       ctarget;
         char                    iifname[IFNAMSIZ];
+        char                    oifname[IFNAMSIZ];
         struct rcu_head         rcu;
         struct net *            fr_net;
 };
@@ -68,6 +70,7 @@ struct fib_rules_ops {
 
 #define FRA_GENERIC_POLICY \
         [FRA_IIFNAME]   = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
+        [FRA_OIFNAME]   = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, \
         [FRA_PRIORITY]  = { .type = NLA_U32 }, \
         [FRA_FWMARK]    = { .type = NLA_U32 }, \
         [FRA_FWMASK]    = { .type = NLA_U32 }, \