diff options
| author |   Matus Fabian <matfabia@cisco.com> | 2018-09-03 05:02:23 -0700 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2018-09-03 14:48:54 +0000 |
| commit | ea5b5be4eeb0f4cd80cb466bd6e31cad33c57960 (patch) | |
| tree | b40903f9c38e53e34fd0cd86613046838aca9505 /src/plugins/nat/nat.h | |
| parent | 7ff0a265a8b5692268c0f44385712c7be8e32775 (diff) | |
NAT44: client-IP based session affinity for load-balancing (VPP-1297)
Enable client-IP based session affinity per LB NAT rule with specific timeout.
Change-Id: I9aade152e330218d21dfda99cc5e984d769ab806
Signed-off-by: Matus Fabian <matfabia@cisco.com>
Diffstat (limited to 'src/plugins/nat/nat.h')
| -rw-r--r-- | src/plugins/nat/nat.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/plugins/nat/nat.h b/src/plugins/nat/nat.h index 76f57542d16..660fb4c2965 100644 --- a/src/plugins/nat/nat.h +++ b/src/plugins/nat/nat.h @@ -142,6 +142,7 @@ typedef enum { #define SNAT_SESSION_FLAG_TWICE_NAT 8 #define SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT 16 #define SNAT_SESSION_FLAG_FWD_BYPASS 32 +#define SNAT_SESSION_FLAG_AFFINITY 64 #define NAT_INTERFACE_FLAG_IS_INSIDE 1 #define NAT_INTERFACE_FLAG_IS_OUTSIDE 2 @@ -241,6 +242,12 @@ typedef enum { TWICE_NAT_SELF, } twice_nat_type_t; +typedef enum { + NO_LB_NAT, + LB_NAT, + AFFINITY_LB_NAT, +} lb_nat_type_t; + typedef struct { ip4_address_t local_addr; ip4_address_t external_addr; @@ -252,9 +259,11 @@ typedef struct { u32 vrf_id; u32 fib_index; snat_protocol_t proto; + u32 affinity; u32 *workers; u8 *tag; nat44_lb_addr_port_t *locals; + u32 affinity_per_service_list_head_index; } snat_static_mapping_t; typedef struct { @@ -472,7 +481,8 @@ int snat_static_mapping_match (snat_main_t * sm, u8 by_external, u8 *is_addr_only, twice_nat_type_t *twice_nat, - u8 *lb); + lb_nat_type_t *lb, + ip4_address_t * ext_host_addr); void snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, @@ -526,6 +536,12 @@ typedef struct { */ #define is_ed_session(s) (s->flags & SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT) +/** \brief Check if NAT session has affinity record. + @param s NAT session + @return 1 if NAT session has affinity record +*/ +#define is_affinity_sessions(s) (s->flags & SNAT_SESSION_FLAG_AFFINITY) + #define nat_interface_is_inside(i) i->flags & NAT_INTERFACE_FLAG_IS_INSIDE #define nat_interface_is_outside(i) i->flags & NAT_INTERFACE_FLAG_IS_OUTSIDE @@ -619,7 +635,7 @@ int nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, snat_protocol_t proto, nat44_lb_addr_port_t *locals, u8 is_add, twice_nat_type_t twice_nat, u8 out2in_only, - u8 *tag); + u8 *tag, u32 affinity); int nat44_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port, snat_protocol_t proto, u32 vrf_id, int is_in); int nat44_del_ed_session (snat_main_t *sm, ip4_address_t *addr, u16 port, |