FD.io VPP  v18.07.1-19-g511ce25
Vector Packet Processing
lb.h File Reference
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Data Structures

struct  lb_as_t
 Each VIP is configured with a set of application server. More...
 
struct  lb_new_flow_entry_t
 
struct  lb_vip_encap_args_t
 
struct  lb_vip_t
 Load balancing service is provided per VIP. More...
 
struct  lb_snat4_key_t
 
struct  lb_snat6_key_t
 
struct  lb_snat_mapping_t
 
struct  lb_per_cpu_t
 
struct  lb_main_t
 
struct  lb_vip_add_args_t
 

Macros

#define LB_DEFAULT_PER_CPU_STICKY_BUCKETS   1 << 10
 lb-plugin implements a MagLev-like load balancer. More...
 
#define LB_DEFAULT_FLOW_TIMEOUT   40
 
#define LB_MAPPING_BUCKETS   1024
 
#define LB_MAPPING_MEMORY_SIZE   64<<20
 
#define foreach_lb_nat_in2out_error
 
#define LB_AS_FLAGS_USED   0x1
 
#define lb_foreach_vip_counter
 
#define LB_VIP_FLAGS_USED   0x1
 
#define lb_vip_is_ip4(vip)
 
#define lb_vip_is_gre4(vip)
 
#define lb_vip_is_gre6(vip)
 
#define lb_encap_is_ip4(vip)
 
#define foreach_lb_nat_protocol
 
#define lb_vip_get_by_index(index)   (pool_is_free_index(lb_main.vips, index)?NULL:pool_elt_at_index(lb_main.vips, index))
 

Enumerations

enum  lb_next_t { LB_NEXT_DROP, LB_N_NEXT }
 
enum  LB_nat4_in2out_next_t { LB_NAT4_IN2OUT_NEXT_DROP, LB_NAT4_IN2OUT_NEXT_LOOKUP, LB_NAT4_IN2OUT_N_NEXT }
 
enum  LB_nat6_in2out_next_t { LB_NAT6_IN2OUT_NEXT_DROP, LB_NAT6_IN2OUT_NEXT_LOOKUP, LB_NAT6_IN2OUT_N_NEXT }
 
enum  lb_nat_in2out_error_t { LB_NAT_IN2OUT_N_ERROR }
 
enum  lb_svr_type_t { LB_SRV_TYPE_CLUSTERIP, LB_SRV_TYPE_NODEPORT, LB_SRV_N_TYPES }
 lb for kube-proxy supports three types of service More...
 
enum  lb4_nodeport_next_t { LB4_NODEPORT_NEXT_IP4_NAT4, LB4_NODEPORT_NEXT_DROP, LB4_NODEPORT_N_NEXT }
 
enum  lb6_nodeport_next_t { LB6_NODEPORT_NEXT_IP6_NAT6, LB6_NODEPORT_NEXT_DROP, LB6_NODEPORT_N_NEXT }
 
enum  lb_vip_counter_t { LB_N_VIP_COUNTERS }
 
enum  lb_encap_type_t {
  LB_ENCAP_TYPE_GRE4, LB_ENCAP_TYPE_GRE6, LB_ENCAP_TYPE_L3DSR, LB_ENCAP_TYPE_NAT4,
  LB_ENCAP_TYPE_NAT6, LB_ENCAP_N_TYPES
}
 
enum  lb_vip_type_t {
  LB_VIP_TYPE_IP6_GRE6, LB_VIP_TYPE_IP6_GRE4, LB_VIP_TYPE_IP4_GRE6, LB_VIP_TYPE_IP4_GRE4,
  LB_VIP_TYPE_IP4_L3DSR, LB_VIP_TYPE_IP4_NAT4, LB_VIP_TYPE_IP6_NAT6, LB_VIP_N_TYPES
}
 The load balancer supports IPv4 and IPv6 traffic and GRE4, GRE6, L3DSR and NAT4, NAT6 encap. More...
 
enum  lb_nat_protocol_t { foreach_lb_nat_protocol }
 

Functions

static bool lb_vip_is_l3dsr (const lb_vip_t *vip)
 
static bool lb_vip_is_nat4 (const lb_vip_t *vip)
 
static bool lb_vip_is_nat6 (const lb_vip_t *vip)
 
static u32 lb_ip_proto_to_nat_proto (u8 ip_proto)
 
int lb_conf (ip4_address_t *ip4_address, ip6_address_t *ip6_address, u32 sticky_buckets, u32 flow_timeout)
 Fix global load-balancer parameters. More...
 
int lb_vip_add (lb_vip_add_args_t args, u32 *vip_index)
 
int lb_vip_del (u32 vip_index)
 
int lb_vip_find_index (ip46_address_t *prefix, u8 plen, u32 *vip_index)
 
int lb_vip_add_ass (u32 vip_index, ip46_address_t *addresses, u32 n)
 
int lb_vip_del_ass (u32 vip_index, ip46_address_t *addresses, u32 n)
 
u32 lb_hash_time_now (vlib_main_t *vm)
 
void lb_garbage_collection ()
 
int lb_nat4_interface_add_del (u32 sw_if_index, int is_del)
 
int lb_nat6_interface_add_del (u32 sw_if_index, int is_del)
 

Variables

format_function_t format_lb_as
 
format_function_t format_lb_vip_type
 
unformat_function_t unformat_lb_vip_type
 
format_function_t format_lb_vip
 
format_function_t format_lb_vip_detailed
 
lb_main_t lb_main
 
vlib_node_registration_t lb4_node
 
vlib_node_registration_t lb6_node
 
vlib_node_registration_t lb4_nodeport_node
 (constructor) VLIB_REGISTER_NODE (lb4_nodeport_node) More...
 
vlib_node_registration_t lb6_nodeport_node
 (constructor) VLIB_REGISTER_NODE (lb6_nodeport_node) More...
 
vlib_node_registration_t lb_nat4_in2out_node
 (constructor) VLIB_REGISTER_NODE (lb_nat4_in2out_node) More...
 
vlib_node_registration_t lb_nat6_in2out_node
 (constructor) VLIB_REGISTER_NODE (lb_nat6_in2out_node) More...
 
format_function_t format_lb_main
 

Macro Definition Documentation

#define foreach_lb_nat_in2out_error
Value:
_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
_(IN2OUT_PACKETS, "Good in2out packets processed") \
_(NO_TRANSLATION, "No translation")

Definition at line 67 of file lb.h.

#define foreach_lb_nat_protocol
Value:
_(UDP, 0, udp, "udp") \
_(TCP, 1, tcp, "tcp")

Definition at line 339 of file lb.h.

#define LB_AS_FLAGS_USED   0x1

Definition at line 131 of file lb.h.

#define LB_DEFAULT_FLOW_TIMEOUT   40

Definition at line 46 of file lb.h.

#define LB_DEFAULT_PER_CPU_STICKY_BUCKETS   1 << 10

lb-plugin implements a MagLev-like load balancer.

http://research.google.com/pubs/pub44824.html

It hasn't been tested for interoperability with the original MagLev but intends to provide similar functionality. The load-balancer receives traffic destined to VIP (Virtual IP) addresses from one or multiple(ECMP) routers. The load-balancer tunnels the traffic toward many application servers ensuring session stickyness (i.e. that a single sessions is tunneled towards a single application server).

Definition at line 45 of file lb.h.

#define lb_encap_is_ip4 (   vip)
Value:
((vip)->type == LB_VIP_TYPE_IP6_GRE4 \
|| (vip)->type == LB_VIP_TYPE_IP4_GRE4 \
|| (vip)->type == LB_VIP_TYPE_IP4_L3DSR \
|| (vip)->type == LB_VIP_TYPE_IP4_NAT4 )

Definition at line 315 of file lb.h.

#define lb_foreach_vip_counter
Value:
_(NEXT_PACKET, "packet from existing sessions", 0) \
_(FIRST_PACKET, "first session packet", 1) \
_(UNTRACKED_PACKET, "untracked packet", 2) \
_(NO_SERVER, "no server configured", 3)

Definition at line 167 of file lb.h.

#define LB_MAPPING_BUCKETS   1024

Definition at line 47 of file lb.h.

#define LB_MAPPING_MEMORY_SIZE   64<<20

Definition at line 48 of file lb.h.

#define LB_VIP_FLAGS_USED   0x1

Definition at line 295 of file lb.h.

#define lb_vip_get_by_index (   index)    (pool_is_free_index(lb_main.vips, index)?NULL:pool_elt_at_index(lb_main.vips, index))

Definition at line 542 of file lb.h.

#define lb_vip_is_gre4 (   vip)
Value:
((vip)->type == LB_VIP_TYPE_IP6_GRE4 \
|| (vip)->type == LB_VIP_TYPE_IP4_GRE4)

Definition at line 309 of file lb.h.

#define lb_vip_is_gre6 (   vip)
Value:
((vip)->type == LB_VIP_TYPE_IP6_GRE6 \
|| (vip)->type == LB_VIP_TYPE_IP4_GRE6)

Definition at line 312 of file lb.h.

#define lb_vip_is_ip4 (   vip)
Value:
((vip)->type == LB_VIP_TYPE_IP4_GRE6 \
|| (vip)->type == LB_VIP_TYPE_IP4_GRE4 \
|| (vip)->type == LB_VIP_TYPE_IP4_L3DSR \
|| (vip)->type == LB_VIP_TYPE_IP4_NAT4 )

Definition at line 304 of file lb.h.

Enumeration Type Documentation

Enumerator
LB4_NODEPORT_NEXT_IP4_NAT4 
LB4_NODEPORT_NEXT_DROP 
LB4_NODEPORT_N_NEXT 

Definition at line 88 of file lb.h.

Enumerator
LB6_NODEPORT_NEXT_IP6_NAT6 
LB6_NODEPORT_NEXT_DROP 
LB6_NODEPORT_N_NEXT 

Definition at line 94 of file lb.h.

Enumerator
LB_ENCAP_TYPE_GRE4 
LB_ENCAP_TYPE_GRE6 
LB_ENCAP_TYPE_L3DSR 
LB_ENCAP_TYPE_NAT4 
LB_ENCAP_TYPE_NAT6 
LB_ENCAP_N_TYPES 

Definition at line 180 of file lb.h.

Enumerator
LB_NAT4_IN2OUT_NEXT_DROP 
LB_NAT4_IN2OUT_NEXT_LOOKUP 
LB_NAT4_IN2OUT_N_NEXT 

Definition at line 55 of file lb.h.

Enumerator
LB_NAT6_IN2OUT_NEXT_DROP 
LB_NAT6_IN2OUT_NEXT_LOOKUP 
LB_NAT6_IN2OUT_N_NEXT 

Definition at line 61 of file lb.h.

Enumerator
LB_NAT_IN2OUT_N_ERROR 

Definition at line 72 of file lb.h.

Enumerator
foreach_lb_nat_protocol 

Definition at line 343 of file lb.h.

enum lb_next_t
Enumerator
LB_NEXT_DROP 
LB_N_NEXT 

Definition at line 50 of file lb.h.

lb for kube-proxy supports three types of service

Enumerator
LB_SRV_TYPE_CLUSTERIP 
LB_SRV_TYPE_NODEPORT 
LB_SRV_N_TYPES 

Definition at line 82 of file lb.h.

Enumerator
LB_N_VIP_COUNTERS 

Definition at line 173 of file lb.h.

The load balancer supports IPv4 and IPv6 traffic and GRE4, GRE6, L3DSR and NAT4, NAT6 encap.

Enumerator
LB_VIP_TYPE_IP6_GRE6 
LB_VIP_TYPE_IP6_GRE4 
LB_VIP_TYPE_IP4_GRE6 
LB_VIP_TYPE_IP4_GRE4 
LB_VIP_TYPE_IP4_L3DSR 
LB_VIP_TYPE_IP4_NAT4 
LB_VIP_TYPE_IP6_NAT6 
LB_VIP_N_TYPES 

Definition at line 193 of file lb.h.

Function Documentation

int lb_conf ( ip4_address_t ip4_address,
ip6_address_t ip6_address,
u32  sticky_buckets,
u32  flow_timeout 
)

Fix global load-balancer parameters.

Parameters
ip4_addressIPv4 source address used for encapsulated traffic
ip6_addressIPv6 source address used for encapsulated traffic
Returns
0 on success. VNET_LB_ERR_XXX on error

Definition at line 464 of file lb.c.

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void lb_garbage_collection ( )

Definition at line 335 of file lb.c.

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u32 lb_hash_time_now ( vlib_main_t vm)

Definition at line 70 of file lb.c.

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static u32 lb_ip_proto_to_nat_proto ( u8  ip_proto)
inlinestatic

Definition at line 350 of file lb.h.

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int lb_nat4_interface_add_del ( u32  sw_if_index,
int  is_del 
)

Definition at line 1045 of file lb.c.

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int lb_nat6_interface_add_del ( u32  sw_if_index,
int  is_del 
)

Definition at line 1061 of file lb.c.

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int lb_vip_add ( lb_vip_add_args_t  args,
u32 vip_index 
)

Definition at line 823 of file lb.c.

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int lb_vip_add_ass ( u32  vip_index,
ip46_address_t *  addresses,
u32  n 
)

Definition at line 527 of file lb.c.

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int lb_vip_del ( u32  vip_index)

Definition at line 936 of file lb.c.

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int lb_vip_del_ass ( u32  vip_index,
ip46_address_t *  addresses,
u32  n 
)

Definition at line 755 of file lb.c.

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int lb_vip_find_index ( ip46_address_t *  prefix,
u8  plen,
u32 vip_index 
)

Definition at line 500 of file lb.c.

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static bool lb_vip_is_l3dsr ( const lb_vip_t vip)
inlinestatic

Definition at line 321 of file lb.h.

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static bool lb_vip_is_nat4 ( const lb_vip_t vip)
inlinestatic

Definition at line 326 of file lb.h.

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static bool lb_vip_is_nat6 ( const lb_vip_t vip)
inlinestatic

Definition at line 331 of file lb.h.

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Variable Documentation

format_function_t format_lb_as

Definition at line 161 of file lb.h.

format_function_t format_lb_main

Definition at line 554 of file lb.h.

format_function_t format_lb_vip

Definition at line 336 of file lb.h.

format_function_t format_lb_vip_detailed

Definition at line 337 of file lb.h.

format_function_t format_lb_vip_type

Definition at line 204 of file lb.h.

vlib_node_registration_t lb4_nodeport_node

(constructor) VLIB_REGISTER_NODE (lb4_nodeport_node)

Definition at line 1053 of file node.c.

vlib_node_registration_t lb6_nodeport_node

(constructor) VLIB_REGISTER_NODE (lb6_nodeport_node)

Definition at line 1069 of file node.c.

lb_main_t lb_main

Definition at line 28 of file lb.c.

vlib_node_registration_t lb_nat4_in2out_node

(constructor) VLIB_REGISTER_NODE (lb_nat4_in2out_node)

Definition at line 1092 of file node.c.

vlib_node_registration_t lb_nat6_in2out_node

(constructor) VLIB_REGISTER_NODE (lb_nat6_in2out_node)

Definition at line 1115 of file node.c.

unformat_function_t unformat_lb_vip_type

Definition at line 205 of file lb.h.