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authorwenxu <wenxu@ucloud.cn>2019-02-24 11:36:20 +0800
committerDavid S. Miller <davem@davemloft.net>2019-02-27 12:50:17 -0800
commit24ba14406c5c8e33fcbe064f77b3ab01b84ec830 (patch)
tree88eee234f6c4e037ad2467b8c370ed1541f5e366 /include/net
parent8f4ef499c6ca56325c76600777237deaeb58a69b (diff)
downloadlinux-24ba14406c5c8e33fcbe064f77b3ab01b84ec830.tar.bz2
route: Add multipath_hash in flowi_common to make user-define hash
Current fib_multipath_hash_policy can make hash based on the L3 or L4. But it only work on the outer IP. So a specific tunnel always has the same hash value. But a specific tunnel may contain so many inner connections. This patch provide a generic multipath_hash in floi_common. It can make a user-define hash which can mix with L3 or L4 hash. Signed-off-by: wenxu <wenxu@ucloud.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/flow.h2
-rw-r--r--include/net/ip_tunnels.h3
2 files changed, 4 insertions, 1 deletions
diff --git a/include/net/flow.h b/include/net/flow.h
index 93f2c9a0f098..a50fb77a0b27 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -40,6 +40,7 @@ struct flowi_common {
__u32 flowic_secid;
kuid_t flowic_uid;
struct flowi_tunnel flowic_tun_key;
+ __u32 flowic_multipath_hash;
};
union flowi_uli {
@@ -78,6 +79,7 @@ struct flowi4 {
#define flowi4_secid __fl_common.flowic_secid
#define flowi4_tun_key __fl_common.flowic_tun_key
#define flowi4_uid __fl_common.flowic_uid
+#define flowi4_multipath_hash __fl_common.flowic_multipath_hash
/* (saddr,daddr) must be grouped, same order as in IP header */
__be32 saddr;
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index f069f64ebf29..af645604f328 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -241,7 +241,7 @@ static inline void ip_tunnel_init_flow(struct flowi4 *fl4,
int proto,
__be32 daddr, __be32 saddr,
__be32 key, __u8 tos, int oif,
- __u32 mark)
+ __u32 mark, __u32 tun_inner_hash)
{
memset(fl4, 0, sizeof(*fl4));
fl4->flowi4_oif = oif;
@@ -251,6 +251,7 @@ static inline void ip_tunnel_init_flow(struct flowi4 *fl4,
fl4->flowi4_proto = proto;
fl4->fl4_gre_key = key;
fl4->flowi4_mark = mark;
+ fl4->flowi4_multipath_hash = tun_inner_hash;
}
int ip_tunnel_init(struct net_device *dev);