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-rw-r--r--plugins/lb-plugin/lb/node.c325
1 files changed, 163 insertions, 162 deletions
diff --git a/plugins/lb-plugin/lb/node.c b/plugins/lb-plugin/lb/node.c
index 4f71616120e..c51a2108a0f 100644
--- a/plugins/lb-plugin/lb/node.c
+++ b/plugins/lb-plugin/lb/node.c
@@ -108,168 +108,169 @@ lb_node_fn (vlib_main_t * vm,
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;
+ /* 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;
}
static uword
ef='#n742'>742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885