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| author |   Peter Nørlund <pch@ordbogen.com> | 2015-09-30 10:12:21 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-10-05 02:59:21 -0700 |
| commit | 0e884c78ee19e902f300ed147083c28a0c6302f0 (patch) | |
| tree | 4a60b19eed14b18e7f5473cfd0df6cb6434a57c4 /include/net/ip_fib.h | |
| parent | Merge branch 'tcp-listener-fixes-and-improvement' (diff) | |
| download | linux-dev-0e884c78ee19e902f300ed147083c28a0c6302f0.tar.xz linux-dev-0e884c78ee19e902f300ed147083c28a0c6302f0.zip | |
ipv4: L3 hash-based multipath
Replaces the per-packet multipath with a hash-based multipath using
source and destination address.
Signed-off-by: Peter Nørlund <pch@ordbogen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/ip_fib.h')
| -rw-r--r-- | include/net/ip_fib.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h index 727d6e9a9685..7a51fd8d99e4 100644 --- a/include/net/ip_fib.h +++ b/include/net/ip_fib.h @@ -79,7 +79,7 @@ struct fib_nh { unsigned char nh_scope; #ifdef CONFIG_IP_ROUTE_MULTIPATH int nh_weight; - int nh_power; + atomic_t nh_upper_bound; #endif #ifdef CONFIG_IP_ROUTE_CLASSID __u32 nh_tclassid; @@ -118,7 +118,7 @@ struct fib_info { #define fib_advmss fib_metrics[RTAX_ADVMSS-1] int fib_nhs; #ifdef CONFIG_IP_ROUTE_MULTIPATH - int fib_power; + int fib_weight; #endif struct rcu_head rcu; struct fib_nh fib_nh[0]; @@ -320,7 +320,15 @@ int ip_fib_check_default(__be32 gw, struct net_device *dev); int fib_sync_down_dev(struct net_device *dev, unsigned long event); int fib_sync_down_addr(struct net *net, __be32 local); int fib_sync_up(struct net_device *dev, unsigned int nh_flags); -void fib_select_multipath(struct fib_result *res); + +extern u32 fib_multipath_secret __read_mostly; + +static inline int fib_multipath_hash(__be32 saddr, __be32 daddr) +{ + return jhash_2words(saddr, daddr, fib_multipath_secret) >> 1; +} + +void fib_select_multipath(struct fib_result *res, int hash); /* Exported by fib_trie.c */ void fib_trie_init(void); |