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-rw-r--r--plugins/lb-plugin/lb/node.c419
1 files changed, 0 insertions, 419 deletions
diff --git a/plugins/lb-plugin/lb/node.c b/plugins/lb-plugin/lb/node.c
deleted file mode 100644
index 8b763c537d5..00000000000
--- a/plugins/lb-plugin/lb/node.c
+++ /dev/null
@@ -1,419 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <lb/lb.h>
-
-#include <vnet/gre/packet.h>
-#include <lb/lbhash.h>
-
-#define foreach_lb_error \
- _(NONE, "no error") \
- _(PROTO_NOT_SUPPORTED, "protocol not supported")
-
-typedef enum {
-#define _(sym,str) LB_ERROR_##sym,
- foreach_lb_error
-#undef _
- LB_N_ERROR,
-} lb_error_t;
-
-static char *lb_error_strings[] = {
-#define _(sym,string) string,
- foreach_lb_error
-#undef _
-};
-
-typedef struct {
- u32 vip_index;
- u32 as_index;
-} lb_trace_t;
-
-u8 *
-format_lb_trace (u8 * s, va_list * args)
-{
- lb_main_t *lbm = &lb_main;
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- lb_trace_t *t = va_arg (*args, lb_trace_t *);
- if (pool_is_free_index(lbm->vips, t->vip_index)) {
- s = format(s, "lb vip[%d]: This VIP was freed since capture\n");
- } else {
- s = format(s, "lb vip[%d]: %U\n", t->vip_index, format_lb_vip, &lbm->vips[t->vip_index]);
- }
- if (pool_is_free_index(lbm->ass, t->as_index)) {
- s = format(s, "lb as[%d]: This AS was freed since capture\n");
- } else {
- s = format(s, "lb as[%d]: %U\n", t->as_index, format_lb_as, &lbm->ass[t->as_index]);
- }
- return s;
-}
-
-lb_hash_t *lb_get_sticky_table(u32 cpu_index)
-{
- lb_main_t *lbm = &lb_main;
- lb_hash_t *sticky_ht = lbm->per_cpu[cpu_index].sticky_ht;
- //Check if size changed
- if (PREDICT_FALSE(sticky_ht && (lbm->per_cpu_sticky_buckets != lb_hash_nbuckets(sticky_ht))))
- {
- //Dereference everything in there
- lb_hash_bucket_t *b;
- u32 i;
- lb_hash_foreach_entry(sticky_ht, b, i) {
- vlib_refcount_add(&lbm->as_refcount, cpu_index, b->value[i], -1);
- vlib_refcount_add(&lbm->as_refcount, cpu_index, 0, 1);
- }
-
- lb_hash_free(sticky_ht);
- sticky_ht = NULL;
- }
-
- //Create if necessary
- if (PREDICT_FALSE(sticky_ht == NULL)) {
- lbm->per_cpu[cpu_index].sticky_ht = lb_hash_alloc(lbm->per_cpu_sticky_buckets, lbm->flow_timeout);
- sticky_ht = lbm->per_cpu[cpu_index].sticky_ht;
- clib_warning("Regenerated sticky table %p", sticky_ht);
- }
-
- ASSERT(sticky_ht);
-
- //Update timeout
- sticky_ht->timeout = lbm->flow_timeout;
- return sticky_ht;
-}
-
-u64
-lb_node_get_other_ports4(ip4_header_t *ip40)
-{
- return 0;
-}
-
-u64
-lb_node_get_other_ports6(ip6_header_t *ip60)
-{
- return 0;
-}
-
-static_always_inline u32
-lb_node_get_hash(vlib_buffer_t *p, u8 is_input_v4)
-{
- u32 hash;
- if (is_input_v4)
- {
- ip4_header_t *ip40;
- u64 ports;
- ip40 = vlib_buffer_get_current (p);
- if (PREDICT_TRUE (ip40->protocol == IP_PROTOCOL_TCP ||
- ip40->protocol == IP_PROTOCOL_UDP))
- ports = ((u64)((udp_header_t *)(ip40 + 1))->src_port << 16) |
- ((u64)((udp_header_t *)(ip40 + 1))->dst_port);
- else
- ports = lb_node_get_other_ports4(ip40);
-
- hash = lb_hash_hash(*((u64 *)&ip40->address_pair), ports,
- 0, 0, 0);
- }
- else
- {
- ip6_header_t *ip60;
- ip60 = vlib_buffer_get_current (p);
- u64 ports;
- if (PREDICT_TRUE (ip60->protocol == IP_PROTOCOL_TCP ||
- ip60->protocol == IP_PROTOCOL_UDP))
- ports = ((u64)((udp_header_t *)(ip60 + 1))->src_port << 16) |
- ((u64)((udp_header_t *)(ip60 + 1))->dst_port);
- else
- ports = lb_node_get_other_ports6(ip60);
-
- hash = lb_hash_hash(ip60->src_address.as_u64[0],
- ip60->src_address.as_u64[1],
- ip60->dst_address.as_u64[0],
- ip60->dst_address.as_u64[1],
- ports);
- }
- return hash;
-}
-
-static_always_inline uword
-lb_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame,
- 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)
-{
- lb_main_t *lbm = &lb_main;
- 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;
-
- u32 nexthash0 = 0;
- if (PREDICT_TRUE(n_left_from > 0))
- nexthash0 = lb_node_get_hash(vlib_get_buffer (vm, from[0]), is_input_v4);
-
- 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;
- u32 asindex0;
- u16 len0;
- u32 available_index0;
- u8 counter = 0;
- u32 hash0 = nexthash0;
-
- if (PREDICT_TRUE(n_left_from > 1))
- {
- vlib_buffer_t *p1 = vlib_get_buffer (vm, from[1]);
- //Compute next hash and prefetch bucket
- nexthash0 = lb_node_get_hash(p1, is_input_v4);
- lb_hash_prefetch_bucket(sticky_ht, nexthash0);
- //Prefetch for encap, next
- CLIB_PREFETCH (vlib_buffer_get_current(p1) - 64, 64, STORE);
- }
-
- if (PREDICT_TRUE(n_left_from > 2))
- {
- vlib_buffer_t *p2;
- p2 = vlib_get_buffer(vm, from[2]);
- /* prefetch packet header and data */
- vlib_prefetch_buffer_header(p2, STORE);
- CLIB_PREFETCH (vlib_buffer_get_current(p2), 64, 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);
- }
- else
- {
- ip6_header_t *ip60;
- ip60 = vlib_buffer_get_current (p0);
- len0 = clib_net_to_host_u16(ip60->payload_length) + sizeof(ip6_header_t);
- }
-
- lb_hash_get(sticky_ht, hash0, vnet_buffer (p0)->ip.adj_index[VLIB_TX],
- lb_time, &available_index0, &asindex0);
-
- if (PREDICT_TRUE(asindex0 != ~0))
- {
- //Found an existing entry
- counter = LB_VIP_COUNTER_NEXT_PACKET;
- }
- else if (PREDICT_TRUE(available_index0 != ~0))
- {
- //There is an available slot for a new flow
- asindex0 = vip0->new_flow_table[hash0 & vip0->new_flow_table_mask].as_index;
- counter = LB_VIP_COUNTER_FIRST_PACKET;
- counter = (asindex0 == 0)?LB_VIP_COUNTER_NO_SERVER:counter;
-
- //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, hash0, available_index0), -1);
- vlib_refcount_add(&lbm->as_refcount, cpu_index,
- asindex0, 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, hash0, asindex0,
- vnet_buffer (p0)->ip.adj_index[VLIB_TX],
- available_index0, lb_time);
- }
- else
- {
- //Could not store new entry in the table
- asindex0 = vip0->new_flow_table[hash0 & vip0->new_flow_table_mask].as_index;
- counter = LB_VIP_COUNTER_UNTRACKED_PACKET;
- }
-
- vlib_increment_simple_counter(&lbm->vip_counters[counter],
- cpu_index,
- vnet_buffer (p0)->ip.adj_index[VLIB_TX],
- 1);
-
- //Now let's encap
- {
- gre_header_t *gre0;
- 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 = lbm->ass[asindex0].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 = lbm->ass[asindex0].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);
- }
-
- if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
- {
- lb_trace_t *tr = vlib_add_trace (vm, node, p0, sizeof (*tr));
- tr->as_index = asindex0;
- tr->vip_index = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
- }
-
- //Enqueue to next
- //Note that this is going to error if asindex0 == 0
- vnet_buffer (p0)->ip.adj_index[VLIB_TX] = lbm->ass[asindex0].dpo.dpoi_index;
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, pi0,
- lbm->ass[asindex0].dpo.dpoi_next_node);
- }
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
-
- return frame->n_vectors;
-}
-
-static uword
-lb6_gre6_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- return lb_node_fn(vm, node, frame, 0, 0);
-}
-
-static uword
-lb6_gre4_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- return lb_node_fn(vm, node, frame, 0, 1);
-}
-
-static uword
-lb4_gre6_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- return lb_node_fn(vm, node, frame, 1, 0);
-}
-
-static uword
-lb4_gre4_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- return lb_node_fn(vm, node, frame, 1, 1);
-}
-
-VLIB_REGISTER_NODE (lb6_gre6_node) =
-{
- .function = lb6_gre6_node_fn,
- .name = "lb6-gre6",
- .vector_size = sizeof (u32),
- .format_trace = format_lb_trace,
-
- .n_errors = LB_N_ERROR,
- .error_strings = lb_error_strings,
-
- .n_next_nodes = LB_N_NEXT,
- .next_nodes =
- {
- [LB_NEXT_DROP] = "error-drop"
- },
-};
-
-VLIB_REGISTER_NODE (lb6_gre4_node) =
-{
- .function = lb6_gre4_node_fn,
- .name = "lb6-gre4",
- .vector_size = sizeof (u32),
- .format_trace = format_lb_trace,
-
- .n_errors = LB_N_ERROR,
- .error_strings = lb_error_strings,
-
- .n_next_nodes = LB_N_NEXT,
- .next_nodes =
- {
- [LB_NEXT_DROP] = "error-drop"
- },
-};
-
-VLIB_REGISTER_NODE (lb4_gre6_node) =
-{
- .function = lb4_gre6_node_fn,
- .name = "lb4-gre6",
- .vector_size = sizeof (u32),
- .format_trace = format_lb_trace,
-
- .n_errors = LB_N_ERROR,
- .error_strings = lb_error_strings,
-
- .n_next_nodes = LB_N_NEXT,
- .next_nodes =
- {
- [LB_NEXT_DROP] = "error-drop"
- },
-};
-
-VLIB_REGISTER_NODE (lb4_gre4_node) =
-{
- .function = lb4_gre4_node_fn,
- .name = "lb4-gre4",
- .vector_size = sizeof (u32),
- .format_trace = format_lb_trace,
-
- .n_errors = LB_N_ERROR,
- .error_strings = lb_error_strings,
-
- .n_next_nodes = LB_N_NEXT,
- .next_nodes =
- {
- [LB_NEXT_DROP] = "error-drop"
- },
-};
-