#undef _
};
-typedef enum {
- LB_NEXT_LOOKUP,
- LB_NEXT_REWRITE,
- LB_NEXT_DROP,
- LB_N_NEXT,
-} lb_next_t;
-
typedef struct {
u32 vip_index;
u32 as_index;
} lb_trace_t;
-/* u8 *lb_format_adjacency(u8 * s, va_list * va) */
-/* { */
-/* lb_main_t *lbm = &lb_main; */
-/* __attribute((unused)) ip_lookup_main_t *lm = va_arg (*va, ip_lookup_main_t *); */
-/* ip_adjacency_t *adj = va_arg (*va, ip_adjacency_t *); */
-/* lb_adj_data_t *ad = (lb_adj_data_t *) &adj->opaque; */
-/* __attribute__((unused)) lb_vip_t *vip = pool_elt_at_index (lbm->vips, ad->vip_index); */
-/* return format(s, "vip idx:%d", ad->vip_index); */
-/* } */
-
u8 *
format_lb_trace (u8 * s, va_list * args)
{
u8 is_input_v4, //Compile-time parameter stating that is input is v4 (or v6)
u8 is_encap_v4) //Compile-time parameter stating that is GRE encap is v4 (or v6)
{
- /* ip_lookup_main_t *lm = (is_input_v4)?&ip4_main.lookup_main:&ip6_main.lookup_main; */
- /* lb_main_t *lbm = &lb_main; */
- /* vlib_node_runtime_t *error_node = node; */
- /* u32 n_left_from, *from, next_index, *to_next, n_left_to_next; */
- /* u32 cpu_index = os_get_cpu_number(); */
- /* u32 lb_time = lb_hash_time_now(vm); */
-
- /* lb_hash_t *sticky_ht = lb_get_sticky_table(cpu_index); */
- /* from = vlib_frame_vector_args (frame); */
- /* n_left_from = frame->n_vectors; */
- /* next_index = node->cached_next_index; */
-
- /* while (n_left_from > 0) */
- /* { */
- /* vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); */
- /* while (n_left_from > 0 && n_left_to_next > 0) */
- /* { */
- /* u32 pi0; */
- /* vlib_buffer_t *p0; */
- /* ip_adjacency_t *adj0; */
- /* lb_adj_data_t *ad0; */
- /* lb_vip_t *vip0; */
- /* lb_as_t *as0; */
- /* gre_header_t *gre0; */
- /* u16 len0; */
- /* u32 value0, available_index0, hash0; */
- /* u64 key0[5]; */
- /* lb_error_t error0 = LB_ERROR_NONE; */
- /* lb_next_t next0 = LB_NEXT_LOOKUP; */
-
- /* if (PREDICT_TRUE(n_left_from > 1)) */
- /* { */
- /* vlib_buffer_t *p2; */
- /* p2 = vlib_get_buffer(vm, from[1]); */
- /* vlib_prefetch_buffer_header(p2, STORE); */
- /* /\* IPv4 + 8 = 28. possibly plus -40 *\/ */
- /* CLIB_PREFETCH (vlib_buffer_get_current(p2) - 40, 128, STORE); */
- /* } */
-
- /* pi0 = to_next[0] = from[0]; */
- /* from += 1; */
- /* n_left_from -= 1; */
- /* to_next += 1; */
- /* n_left_to_next -= 1; */
-
- /* p0 = vlib_get_buffer (vm, pi0); */
- /* adj0 = ip_get_adjacency (lm, vnet_buffer (p0)->ip.adj_index[VLIB_TX]); */
- /* ad0 = (lb_adj_data_t *) &adj0->opaque; */
- /* vip0 = pool_elt_at_index (lbm->vips, ad0->vip_index); */
-
- /* if (is_input_v4) { */
- /* ip4_header_t *ip40; */
- /* ip40 = vlib_buffer_get_current (p0); */
- /* len0 = clib_net_to_host_u16(ip40->length); */
- /* key0[0] = (u64) ip40->src_address.as_u32; */
- /* key0[1] = (u64) ip40->dst_address.as_u32; */
- /* key0[2] = 0; */
- /* key0[3] = 0; */
- /* key0[4] = ((u64)((udp_header_t *)(ip40 + 1))->src_port << 32) | */
- /* ((u64)((udp_header_t *)(ip40 + 1))->dst_port << 16); */
-
- /* hash0 = lb_hash_hash(key0); */
- /* } else { */
- /* ip6_header_t *ip60; */
- /* ip60 = vlib_buffer_get_current (p0); */
- /* len0 = clib_net_to_host_u16(ip60->payload_length) + sizeof(ip6_header_t); */
- /* key0[0] = ip60->src_address.as_u64[0]; */
- /* key0[1] = ip60->src_address.as_u64[1]; */
- /* key0[2] = ip60->dst_address.as_u64[0]; */
- /* key0[3] = ip60->dst_address.as_u64[1]; */
- /* key0[4] = ((u64)((udp_header_t *)(ip60 + 1))->src_port << 32) | */
- /* ((u64)((udp_header_t *)(ip60 + 1))->dst_port << 16); */
-
- /* hash0 = lb_hash_hash(key0); */
- /* } */
-
- /* //NOTE: This is an ugly trick to not include the VIP index in the hash calculation */
- /* //but actually use it in the key determination. */
- /* key0[4] |= ((vip0 - lbm->vips)); */
-
- /* lb_hash_get(sticky_ht, key0, hash0, lb_time, &available_index0, &value0); */
- /* if (PREDICT_TRUE(value0 != ~0)) { */
- /* //Found an existing entry */
- /* as0 = &lbm->ass[value0]; */
- /* } else if (PREDICT_TRUE(available_index0 != ~0)) { */
- /* //There is an available slot for a new flow */
- /* as0 = &lbm->ass[vip0->new_flow_table[hash0 & vip0->new_flow_table_mask].as_index]; */
- /* if (PREDICT_FALSE(as0 == lbm->ass)) { //Special first element */
- /* error0 = LB_ERROR_NO_SERVER; */
- /* next0 = LB_NEXT_DROP; */
- /* } else { */
- /* vlib_increment_simple_counter(&lbm->vip_counters[LB_VIP_COUNTER_TRACKED_SESSION], */
- /* cpu_index, vip0 - lbm->vips, 1); */
- /* } */
-
- /* //TODO: There are race conditions with as0 and vip0 manipulation. */
- /* //Configuration may be changed, vectors resized, etc... */
-
- /* //Dereference previously used */
- /* vlib_refcount_add(&lbm->as_refcount, cpu_index, lb_hash_available_value(sticky_ht, available_index0), -1); */
- /* vlib_refcount_add(&lbm->as_refcount, cpu_index, as0 - lbm->ass, 1); */
-
- /* //Add sticky entry */
- /* //Note that when there is no AS configured, an entry is configured anyway. */
- /* //But no configured AS is not something that should happen */
- /* lb_hash_put(sticky_ht, key0, as0 - lbm->ass, available_index0, lb_time); */
- /* } else { */
- /* //Could not store new entry in the table */
- /* as0 = &lbm->ass[vip0->new_flow_table[hash0 & vip0->new_flow_table_mask].as_index]; */
- /* vlib_increment_simple_counter(&lbm->vip_counters[LB_VIP_COUNTER_UNTRACKED_PACKET], */
- /* cpu_index, vip0 - lbm->vips, 1); */
- /* } */
-
- /* //Now let's encap */
- /* if (is_encap_v4) { */
- /* ip4_header_t *ip40; */
- /* vlib_buffer_advance(p0, - sizeof(ip4_header_t) - sizeof(gre_header_t)); */
- /* ip40 = vlib_buffer_get_current(p0); */
- /* gre0 = (gre_header_t *)(ip40 + 1); */
- /* ip40->src_address = lbm->ip4_src_address; */
- /* ip40->dst_address = as0->address.ip4; */
- /* ip40->ip_version_and_header_length = 0x45; */
- /* ip40->ttl = 128; */
- /* ip40->length = clib_host_to_net_u16(len0 + sizeof(gre_header_t) + sizeof(ip4_header_t)); */
- /* ip40->protocol = IP_PROTOCOL_GRE; */
- /* ip40->checksum = ip4_header_checksum (ip40); */
- /* } else { */
- /* ip6_header_t *ip60; */
- /* vlib_buffer_advance(p0, - sizeof(ip6_header_t) - sizeof(gre_header_t)); */
- /* ip60 = vlib_buffer_get_current(p0); */
- /* gre0 = (gre_header_t *)(ip60 + 1); */
- /* ip60->dst_address = as0->address.ip6; */
- /* ip60->src_address = lbm->ip6_src_address; */
- /* ip60->hop_limit = 128; */
- /* ip60->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (0x6<<28); */
- /* ip60->payload_length = clib_host_to_net_u16(len0 + sizeof(gre_header_t)); */
- /* ip60->protocol = IP_PROTOCOL_GRE; */
- /* } */
-
- /* gre0->flags_and_version = 0; */
- /* gre0->protocol = (is_input_v4)? */
- /* clib_host_to_net_u16(0x0800): */
- /* clib_host_to_net_u16(0x86DD); */
-
- /* vnet_buffer(p0)->ip.adj_index[VLIB_TX] = as0->adj_index; */
- /* next0 = (as0->adj_index != ~0)?LB_NEXT_REWRITE:next0; */
-
- /* if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED)) */
- /* { */
- /* lb_trace_t *tr = vlib_add_trace (vm, node, p0, sizeof (*tr)); */
- /* tr->as_index = as0 - lbm->ass; */
- /* tr->vip_index = ad0->vip_index; */
- /* } */
-
- /* p0->error = error_node->errors[error0]; */
- /* vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, */
- /* n_left_to_next, pi0, next0); */
- /* } */
- /* vlib_put_next_frame (vm, node, next_index, n_left_to_next); */
- /* } */
-
- /* return frame->n_vectors; */
- return 0;
+ lb_main_t *lbm = &lb_main;
+ vlib_node_runtime_t *error_node = node;
+ u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
+ u32 cpu_index = os_get_cpu_number();
+ u32 lb_time = lb_hash_time_now(vm);
+
+ lb_hash_t *sticky_ht = lb_get_sticky_table(cpu_index);
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 pi0;
+ vlib_buffer_t *p0;
+ lb_vip_t *vip0;
+ lb_as_t *as0;
+ gre_header_t *gre0;
+ u16 len0;
+ u32 value0, available_index0, hash0;
+ u64 key0[5];
+ lb_error_t error0 = LB_ERROR_NONE;
+
+ if (PREDICT_TRUE(n_left_from > 1))
+ {
+ vlib_buffer_t *p2;
+ p2 = vlib_get_buffer(vm, from[1]);
+ vlib_prefetch_buffer_header(p2, STORE);
+ /* IPv4 + 8 = 28. possibly plus -40 */
+ CLIB_PREFETCH (vlib_buffer_get_current(p2) - 40, 128, STORE);
+ }
+
+ pi0 = to_next[0] = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ p0 = vlib_get_buffer (vm, pi0);
+ vip0 = pool_elt_at_index (lbm->vips,
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX]);
+
+ if (is_input_v4) {
+ ip4_header_t *ip40;
+ ip40 = vlib_buffer_get_current (p0);
+ len0 = clib_net_to_host_u16(ip40->length);
+ key0[0] = (u64) ip40->src_address.as_u32;
+ key0[1] = (u64) ip40->dst_address.as_u32;
+ key0[2] = 0;
+ key0[3] = 0;
+ key0[4] = ((u64)((udp_header_t *)(ip40 + 1))->src_port << 32) |
+ ((u64)((udp_header_t *)(ip40 + 1))->dst_port << 16);
+
+ hash0 = lb_hash_hash(key0);
+ } else {
+ ip6_header_t *ip60;
+ ip60 = vlib_buffer_get_current (p0);
+ len0 = clib_net_to_host_u16(ip60->payload_length) + sizeof(ip6_header_t);
+ key0[0] = ip60->src_address.as_u64[0];
+ key0[1] = ip60->src_address.as_u64[1];
+ key0[2] = ip60->dst_address.as_u64[0];
+ key0[3] = ip60->dst_address.as_u64[1];
+ key0[4] = ((u64)((udp_header_t *)(ip60 + 1))->src_port << 32) |
+ ((u64)((udp_header_t *)(ip60 + 1))->dst_port << 16);
+
+ hash0 = lb_hash_hash(key0);
+ }
+
+ //NOTE: This is an ugly trick to not include the VIP index in the hash calculation
+ //but actually use it in the key determination.
+ key0[4] |= ((vip0 - lbm->vips));
+
+ lb_hash_get(sticky_ht, key0, hash0, lb_time, &available_index0, &value0);
+ if (PREDICT_TRUE(value0 != ~0)) {
+ //Found an existing entry
+ as0 = &lbm->ass[value0];
+ } else if (PREDICT_TRUE(available_index0 != ~0)) {
+ //There is an available slot for a new flow
+ as0 = &lbm->ass[vip0->new_flow_table[hash0 & vip0->new_flow_table_mask].as_index];
+ if (PREDICT_FALSE(as0 == lbm->ass)) { //Special first element
+ error0 = LB_ERROR_NO_SERVER;
+ } else {
+ vlib_increment_simple_counter(&lbm->vip_counters[LB_VIP_COUNTER_TRACKED_SESSION],
+ cpu_index, vip0 - lbm->vips, 1);
+ }
+
+ //TODO: There are race conditions with as0 and vip0 manipulation.
+ //Configuration may be changed, vectors resized, etc...
+
+ //Dereference previously used
+ vlib_refcount_add(&lbm->as_refcount, cpu_index, lb_hash_available_value(sticky_ht, available_index0), -1);
+ vlib_refcount_add(&lbm->as_refcount, cpu_index, as0 - lbm->ass, 1);
+
+ //Add sticky entry
+ //Note that when there is no AS configured, an entry is configured anyway.
+ //But no configured AS is not something that should happen
+ lb_hash_put(sticky_ht, key0, as0 - lbm->ass, available_index0, lb_time);
+ } else {
+ //Could not store new entry in the table
+ as0 = &lbm->ass[vip0->new_flow_table[hash0 & vip0->new_flow_table_mask].as_index];
+ vlib_increment_simple_counter(&lbm->vip_counters[LB_VIP_COUNTER_UNTRACKED_PACKET],
+ cpu_index, vip0 - lbm->vips, 1);
+ }
+
+ //Now let's encap
+ if (is_encap_v4) {
+ ip4_header_t *ip40;
+ vlib_buffer_advance(p0, - sizeof(ip4_header_t) - sizeof(gre_header_t));
+ ip40 = vlib_buffer_get_current(p0);
+ gre0 = (gre_header_t *)(ip40 + 1);
+ ip40->src_address = lbm->ip4_src_address;
+ ip40->dst_address = as0->address.ip4;
+ ip40->ip_version_and_header_length = 0x45;
+ ip40->ttl = 128;
+ ip40->length = clib_host_to_net_u16(len0 + sizeof(gre_header_t) + sizeof(ip4_header_t));
+ ip40->protocol = IP_PROTOCOL_GRE;
+ ip40->checksum = ip4_header_checksum (ip40);
+ } else {
+ ip6_header_t *ip60;
+ vlib_buffer_advance(p0, - sizeof(ip6_header_t) - sizeof(gre_header_t));
+ ip60 = vlib_buffer_get_current(p0);
+ gre0 = (gre_header_t *)(ip60 + 1);
+ ip60->dst_address = as0->address.ip6;
+ ip60->src_address = lbm->ip6_src_address;
+ ip60->hop_limit = 128;
+ ip60->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (0x6<<28);
+ ip60->payload_length = clib_host_to_net_u16(len0 + sizeof(gre_header_t));
+ ip60->protocol = IP_PROTOCOL_GRE;
+ }
+
+ gre0->flags_and_version = 0;
+ gre0->protocol = (is_input_v4)?
+ clib_host_to_net_u16(0x0800):
+ clib_host_to_net_u16(0x86DD);
+
+ vnet_buffer (p0)->ip.adj_index[VLIB_TX] = as0->dpo.dpoi_index;
+
+ if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ lb_trace_t *tr = vlib_add_trace (vm, node, p0, sizeof (*tr));
+ tr->as_index = as0 - lbm->ass;
+ tr->vip_index = vip0 - lbm->vips;
+ }
+
+ p0->error = error_node->errors[error0];
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, pi0,
+ as0->dpo.dpoi_next_node);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ return frame->n_vectors;
}
static uword
.n_next_nodes = LB_N_NEXT,
.next_nodes =
{
- [LB_NEXT_LOOKUP] = "ip6-lookup",
- [LB_NEXT_REWRITE] = "ip6-rewrite",
[LB_NEXT_DROP] = "error-drop"
},
};
-/* VNET_IP6_REGISTER_ADJACENCY(lb6_gre6) = { */
-/* .node_name = "lb6-gre6", */
-/* .fn = lb_format_adjacency, */
-/* .next_index = &lb_main.ip_lookup_next_index[LB_VIP_TYPE_IP6_GRE6] */
-/* }; */
-
VLIB_REGISTER_NODE (lb6_gre4_node) =
{
.function = lb6_gre4_node_fn,
.n_next_nodes = LB_N_NEXT,
.next_nodes =
{
- [LB_NEXT_LOOKUP] = "ip4-lookup",
- [LB_NEXT_REWRITE]= "ip4-rewrite-transit",
[LB_NEXT_DROP] = "error-drop"
},
};
-/* VNET_IP6_REGISTER_ADJACENCY(lb6_gre4) = { */
-/* .node_name = "lb6-gre4", */
-/* .fn = lb_format_adjacency, */
-/* .next_index = &lb_main.ip_lookup_next_index[LB_VIP_TYPE_IP6_GRE4] */
-/* }; */
-
VLIB_REGISTER_NODE (lb4_gre6_node) =
{
.function = lb4_gre6_node_fn,
.n_next_nodes = LB_N_NEXT,
.next_nodes =
{
- [LB_NEXT_LOOKUP] = "ip6-lookup",
- [LB_NEXT_REWRITE] = "ip6-rewrite",
[LB_NEXT_DROP] = "error-drop"
},
};
-/* VNET_IP4_REGISTER_ADJACENCY(lb4_gre6) = { */
-/* .node_name = "lb4-gre6", */
-/* .fn = lb_format_adjacency, */
-/* .next_index = &lb_main.ip_lookup_next_index[LB_VIP_TYPE_IP4_GRE6] */
-/* }; */
-
VLIB_REGISTER_NODE (lb4_gre4_node) =
{
.function = lb4_gre4_node_fn,
.n_next_nodes = LB_N_NEXT,
.next_nodes =
{
- [LB_NEXT_LOOKUP] = "ip4-lookup",
- [LB_NEXT_REWRITE]= "ip4-rewrite-transit",
[LB_NEXT_DROP] = "error-drop"
},
};
-/* VNET_IP4_REGISTER_ADJACENCY(lb4_gre4) = { */
-/* .node_name = "lb4-gre4", */
-/* .fn = lb_format_adjacency, */
-/* .next_index = &lb_main.ip_lookup_next_index[LB_VIP_TYPE_IP4_GRE4] */
-/* }; */
Code Review / vpp.git / blobdiff