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author | David S. Miller <davem@davemloft.net> | 2011-12-25 02:21:45 -0500 |
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committer | David S. Miller <davem@davemloft.net> | 2011-12-25 02:21:45 -0500 |
commit | c5e1fd8ccae09f574d6f978c90c2b968ee29030c (patch) | |
tree | e4485dc086ce76c4ff2ff551246255f5de0a250b /net/netfilter/ipvs | |
parent | 60b778ce519625102d3f72a2071ea72a05e990ce (diff) | |
parent | ceb98d03eac5704820f2ac1f370c9ff385e3a9f5 (diff) | |
download | op-kernel-dev-c5e1fd8ccae09f574d6f978c90c2b968ee29030c.zip op-kernel-dev-c5e1fd8ccae09f574d6f978c90c2b968ee29030c.tar.gz |
Merge branch 'nf-next' of git://1984.lsi.us.es/net-next
Diffstat (limited to 'net/netfilter/ipvs')
-rw-r--r-- | net/netfilter/ipvs/Kconfig | 15 | ||||
-rw-r--r-- | net/netfilter/ipvs/ip_vs_sh.c | 18 |
2 files changed, 32 insertions, 1 deletions
diff --git a/net/netfilter/ipvs/Kconfig b/net/netfilter/ipvs/Kconfig index 70bd1d0..af4c0b8 100644 --- a/net/netfilter/ipvs/Kconfig +++ b/net/netfilter/ipvs/Kconfig @@ -232,6 +232,21 @@ config IP_VS_NQ If you want to compile it in kernel, say Y. To compile it as a module, choose M here. If unsure, say N. +comment 'IPVS SH scheduler' + +config IP_VS_SH_TAB_BITS + int "IPVS source hashing table size (the Nth power of 2)" + range 4 20 + default 8 + ---help--- + The source hashing scheduler maps source IPs to destinations + stored in a hash table. This table is tiled by each destination + until all slots in the table are filled. When using weights to + allow destinations to receive more connections, the table is + tiled an amount proportional to the weights specified. The table + needs to be large enough to effectively fit all the destinations + multiplied by their respective weights. + comment 'IPVS application helper' config IP_VS_FTP diff --git a/net/netfilter/ipvs/ip_vs_sh.c b/net/netfilter/ipvs/ip_vs_sh.c index 33815f4..069e8d4 100644 --- a/net/netfilter/ipvs/ip_vs_sh.c +++ b/net/netfilter/ipvs/ip_vs_sh.c @@ -30,6 +30,11 @@ * server is dead or overloaded, the load balancer can bypass the cache * server and send requests to the original server directly. * + * The weight destination attribute can be used to control the + * distribution of connections to the destinations in servernode. The + * greater the weight, the more connections the destination + * will receive. + * */ #define KMSG_COMPONENT "IPVS" @@ -99,9 +104,11 @@ ip_vs_sh_assign(struct ip_vs_sh_bucket *tbl, struct ip_vs_service *svc) struct ip_vs_sh_bucket *b; struct list_head *p; struct ip_vs_dest *dest; + int d_count; b = tbl; p = &svc->destinations; + d_count = 0; for (i=0; i<IP_VS_SH_TAB_SIZE; i++) { if (list_empty(p)) { b->dest = NULL; @@ -113,7 +120,16 @@ ip_vs_sh_assign(struct ip_vs_sh_bucket *tbl, struct ip_vs_service *svc) atomic_inc(&dest->refcnt); b->dest = dest; - p = p->next; + IP_VS_DBG_BUF(6, "assigned i: %d dest: %s weight: %d\n", + i, IP_VS_DBG_ADDR(svc->af, &dest->addr), + atomic_read(&dest->weight)); + + /* Don't move to next dest until filling weight */ + if (++d_count >= atomic_read(&dest->weight)) { + p = p->next; + d_count = 0; + } + } b++; } |