From 24ba14406c5c8e33fcbe064f77b3ab01b84ec830 Mon Sep 17 00:00:00 2001 From: wenxu Date: Sun, 24 Feb 2019 11:36:20 +0800 Subject: 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 Signed-off-by: David S. Miller --- include/net/flow.h | 2 ++ include/net/ip_tunnels.h | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'include/net') 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); -- cgit v1.2.3