diff options
Diffstat (limited to 'src/plugins/gbp/gbp_learn_node.c')
-rw-r--r-- | src/plugins/gbp/gbp_learn_node.c | 718 |
1 files changed, 0 insertions, 718 deletions
diff --git a/src/plugins/gbp/gbp_learn_node.c b/src/plugins/gbp/gbp_learn_node.c deleted file mode 100644 index a6c54971956..00000000000 --- a/src/plugins/gbp/gbp_learn_node.c +++ /dev/null @@ -1,718 +0,0 @@ -/* - * Copyright (c) 2018 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 <plugins/gbp/gbp.h> -#include <plugins/gbp/gbp_learn.h> -#include <plugins/gbp/gbp_bridge_domain.h> -#include <vlibmemory/api.h> - -#include <vnet/util/throttle.h> -#include <vnet/l2/l2_input.h> -#include <vnet/fib/fib_table.h> -#include <vnet/vxlan-gbp/vxlan_gbp_packet.h> -#include <vnet/ethernet/arp_packet.h> - -#define GBP_LEARN_DBG(...) \ - vlib_log_debug (gbp_learn_main.gl_logger, __VA_ARGS__); - -#define foreach_gbp_learn \ - _(DROP, "drop") - -typedef enum -{ -#define _(sym,str) GBP_LEARN_ERROR_##sym, - foreach_gbp_learn -#undef _ - GBP_LEARN_N_ERROR, -} gbp_learn_error_t; - -static char *gbp_learn_error_strings[] = { -#define _(sym,string) string, - foreach_gbp_learn -#undef _ -}; - -typedef enum -{ -#define _(sym,str) GBP_LEARN_NEXT_##sym, - foreach_gbp_learn -#undef _ - GBP_LEARN_N_NEXT, -} gbp_learn_next_t; - -typedef struct gbp_learn_l2_t_ -{ - ip46_address_t ip; - mac_address_t mac; - u32 sw_if_index; - u32 bd_index; - sclass_t sclass; - ip46_address_t outer_src; - ip46_address_t outer_dst; -} gbp_learn_l2_t; - - -static void -gbp_learn_l2_cp (const gbp_learn_l2_t * gl2) -{ - ip46_address_t *ips = NULL; - - GBP_LEARN_DBG ("L2 EP: %U %U, %d", - format_mac_address_t, &gl2->mac, - format_ip46_address, &gl2->ip, IP46_TYPE_ANY, gl2->sclass); - - if (!ip46_address_is_zero (&gl2->ip)) - vec_add1 (ips, gl2->ip); - - /* - * flip the source and dst, since that's how it was received, this API - * takes how it's sent - */ - gbp_endpoint_update_and_lock (GBP_ENDPOINT_SRC_DP, - gl2->sw_if_index, ips, - &gl2->mac, INDEX_INVALID, - INDEX_INVALID, gl2->sclass, - (GBP_ENDPOINT_FLAG_LEARNT | - GBP_ENDPOINT_FLAG_REMOTE), - &gl2->outer_dst, &gl2->outer_src, NULL); - vec_free (ips); -} - -static void -gbp_learn_l2_ip4_dp (const u8 * mac, const ip4_address_t * ip, - u32 bd_index, u32 sw_if_index, sclass_t sclass, - const ip4_address_t * outer_src, - const ip4_address_t * outer_dst) -{ - gbp_learn_l2_t gl2 = { - .sw_if_index = sw_if_index, - .bd_index = bd_index, - .sclass = sclass, - .ip.ip4 = *ip, - .outer_src.ip4 = *outer_src, - .outer_dst.ip4 = *outer_dst, - }; - mac_address_from_bytes (&gl2.mac, mac); - - vl_api_rpc_call_main_thread (gbp_learn_l2_cp, (u8 *) & gl2, sizeof (gl2)); -} - -static void -gbp_learn_l2_ip6_dp (const u8 * mac, const ip6_address_t * ip, - u32 bd_index, u32 sw_if_index, sclass_t sclass, - const ip4_address_t * outer_src, - const ip4_address_t * outer_dst) -{ - gbp_learn_l2_t gl2 = { - .sw_if_index = sw_if_index, - .bd_index = bd_index, - .sclass = sclass, - .ip.ip6 = *ip, - .outer_src.ip4 = *outer_src, - .outer_dst.ip4 = *outer_dst, - }; - mac_address_from_bytes (&gl2.mac, mac); - - vl_api_rpc_call_main_thread (gbp_learn_l2_cp, (u8 *) & gl2, sizeof (gl2)); -} - -static void -gbp_learn_l2_dp (const u8 * mac, u32 bd_index, u32 sw_if_index, - sclass_t sclass, - const ip4_address_t * outer_src, - const ip4_address_t * outer_dst) -{ - gbp_learn_l2_t gl2 = { - .sw_if_index = sw_if_index, - .bd_index = bd_index, - .sclass = sclass, - .outer_src.ip4 = *outer_src, - .outer_dst.ip4 = *outer_dst, - }; - mac_address_from_bytes (&gl2.mac, mac); - - vl_api_rpc_call_main_thread (gbp_learn_l2_cp, (u8 *) & gl2, sizeof (gl2)); -} - -/** - * per-packet trace data - */ -typedef struct gbp_learn_l2_trace_t_ -{ - /* per-pkt trace data */ - mac_address_t mac; - u32 sw_if_index; - u32 new; - u32 throttled; - u32 sclass; - u32 d_bit; - gbp_bridge_domain_flags_t gb_flags; -} gbp_learn_l2_trace_t; - -always_inline void -gbp_learn_get_outer (const ethernet_header_t * eh0, - ip4_address_t * outer_src, ip4_address_t * outer_dst) -{ - ip4_header_t *ip0; - u8 *buff; - - /* rewind back to the ivxlan header */ - buff = (u8 *) eh0; - buff -= (sizeof (vxlan_gbp_header_t) + - sizeof (udp_header_t) + sizeof (ip4_header_t)); - - ip0 = (ip4_header_t *) buff; - - *outer_src = ip0->src_address; - *outer_dst = ip0->dst_address; -} - -always_inline int -gbp_endpoint_update_required (const gbp_endpoint_t * ge0, - u32 rx_sw_if_index, sclass_t sclass) -{ - /* Conditions for [re]learning this EP */ - - /* 1. it doesn't have a dataplane source */ - if (!gbp_endpoint_is_learnt (ge0)) - return (!0); - - /* 2. has the input interface changed */ - if (gbp_itf_get_sw_if_index (ge0->ge_fwd.gef_itf) != rx_sw_if_index) - return (!0); - - /* 3. has the sclass changed */ - if (sclass != ge0->ge_fwd.gef_sclass) - return (!0); - - /* otherwise it's unchanged */ - return (0); -} - -VLIB_NODE_FN (gbp_learn_l2_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - u32 n_left_from, *from, *to_next, next_index, thread_index, seed; - gbp_learn_main_t *glm; - f64 time_now; - - glm = &gbp_learn_main; - next_index = 0; - n_left_from = frame->n_vectors; - from = vlib_frame_vector_args (frame); - time_now = vlib_time_now (vm); - thread_index = vm->thread_index; - - seed = throttle_seed (&glm->gl_l2_throttle, thread_index, time_now); - - while (n_left_from > 0) - { - u32 n_left_to_next; - - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from > 0 && n_left_to_next > 0) - { - ip4_address_t outer_src, outer_dst; - const ethernet_header_t *eh0; - u32 bi0, sw_if_index0, t0; - gbp_bridge_domain_t *gb0; - gbp_learn_next_t next0; - gbp_endpoint_t *ge0; - vlib_buffer_t *b0; - sclass_t sclass0; - - next0 = GBP_LEARN_NEXT_DROP; - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - - eh0 = vlib_buffer_get_current (b0); - sclass0 = vnet_buffer2 (b0)->gbp.sclass; - - next0 = vnet_l2_feature_next (b0, glm->gl_l2_input_feat_next, - L2INPUT_FEAT_GBP_LEARN); - - ge0 = gbp_endpoint_find_mac (eh0->src_address, - vnet_buffer (b0)->l2.bd_index); - gb0 = - gbp_bridge_domain_get_by_bd_index (vnet_buffer (b0)->l2.bd_index); - - if ((vnet_buffer2 (b0)->gbp.flags & VXLAN_GBP_GPFLAGS_D) || - (gb0->gb_flags & GBP_BD_FLAG_DO_NOT_LEARN)) - { - t0 = 1; - goto trace; - } - - /* - * check for new EP or a moved EP - */ - if (NULL == ge0 || - gbp_endpoint_update_required (ge0, sw_if_index0, sclass0)) - { - /* - * use the last 4 bytes of the mac address as the hash for the EP - */ - t0 = throttle_check (&glm->gl_l2_throttle, thread_index, - *((u32 *) (eh0->src_address + 2)), seed); - if (!t0) - { - gbp_learn_get_outer (eh0, &outer_src, &outer_dst); - - if (outer_src.as_u32 == 0 || outer_dst.as_u32 == 0) - { - t0 = 2; - goto trace; - } - - switch (clib_net_to_host_u16 (eh0->type)) - { - case ETHERNET_TYPE_IP4: - { - const ip4_header_t *ip0; - - ip0 = (ip4_header_t *) (eh0 + 1); - - gbp_learn_l2_ip4_dp (eh0->src_address, - &ip0->src_address, - vnet_buffer (b0)->l2.bd_index, - sw_if_index0, sclass0, - &outer_src, &outer_dst); - - break; - } - case ETHERNET_TYPE_IP6: - { - const ip6_header_t *ip0; - - ip0 = (ip6_header_t *) (eh0 + 1); - - gbp_learn_l2_ip6_dp (eh0->src_address, - &ip0->src_address, - vnet_buffer (b0)->l2.bd_index, - sw_if_index0, sclass0, - &outer_src, &outer_dst); - - break; - } - case ETHERNET_TYPE_ARP: - { - const ethernet_arp_header_t *arp0; - - arp0 = (ethernet_arp_header_t *) (eh0 + 1); - - gbp_learn_l2_ip4_dp (eh0->src_address, - &arp0->ip4_over_ethernet[0].ip4, - vnet_buffer (b0)->l2.bd_index, - sw_if_index0, sclass0, - &outer_src, &outer_dst); - break; - } - default: - gbp_learn_l2_dp (eh0->src_address, - vnet_buffer (b0)->l2.bd_index, - sw_if_index0, sclass0, - &outer_src, &outer_dst); - break; - } - } - } - else - { - /* - * this update could happen simultaneoulsy from multiple workers - * but that's ok we are not interested in being very accurate. - */ - t0 = 0; - ge0->ge_last_time = time_now; - } - trace: - if (PREDICT_FALSE ((b0->flags & VLIB_BUFFER_IS_TRACED))) - { - gbp_learn_l2_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - clib_memcpy_fast (t->mac.bytes, eh0->src_address, 6); - t->new = (NULL == ge0); - t->throttled = t0; - t->sw_if_index = sw_if_index0; - t->sclass = sclass0; - t->gb_flags = gb0->gb_flags; - t->d_bit = ! !(vnet_buffer2 (b0)->gbp.flags & - VXLAN_GBP_GPFLAGS_D); - } - - /* verify speculative enqueue, maybe switch current next frame */ - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - return frame->n_vectors; -} - -/* packet trace format function */ -static u8 * -format_gbp_learn_l2_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - gbp_learn_l2_trace_t *t = va_arg (*args, gbp_learn_l2_trace_t *); - - s = format (s, "new:%d throttled:%d d-bit:%d mac:%U itf:%d sclass:%d" - " gb-flags:%U", - t->new, t->throttled, t->d_bit, - format_mac_address_t, &t->mac, t->sw_if_index, t->sclass, - format_gbp_bridge_domain_flags, t->gb_flags); - - return s; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (gbp_learn_l2_node) = { - .name = "gbp-learn-l2", - .vector_size = sizeof (u32), - .format_trace = format_gbp_learn_l2_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = ARRAY_LEN(gbp_learn_error_strings), - .error_strings = gbp_learn_error_strings, - - .n_next_nodes = GBP_LEARN_N_NEXT, - - .next_nodes = { - [GBP_LEARN_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -typedef struct gbp_learn_l3_t_ -{ - ip46_address_t ip; - u32 fib_index; - u32 sw_if_index; - sclass_t sclass; - ip46_address_t outer_src; - ip46_address_t outer_dst; -} gbp_learn_l3_t; - -static void -gbp_learn_l3_cp (const gbp_learn_l3_t * gl3) -{ - ip46_address_t *ips = NULL; - - GBP_LEARN_DBG ("L3 EP: %U, %d", format_ip46_address, &gl3->ip, - IP46_TYPE_ANY, gl3->sclass); - - vec_add1 (ips, gl3->ip); - - gbp_endpoint_update_and_lock (GBP_ENDPOINT_SRC_DP, - gl3->sw_if_index, ips, NULL, - INDEX_INVALID, INDEX_INVALID, gl3->sclass, - (GBP_ENDPOINT_FLAG_REMOTE | - GBP_ENDPOINT_FLAG_LEARNT), - &gl3->outer_dst, &gl3->outer_src, NULL); - vec_free (ips); -} - -static void -gbp_learn_ip4_dp (const ip4_address_t * ip, - u32 fib_index, u32 sw_if_index, sclass_t sclass, - const ip4_address_t * outer_src, - const ip4_address_t * outer_dst) -{ - /* *INDENT-OFF* */ - gbp_learn_l3_t gl3 = { - .ip = { - .ip4 = *ip, - }, - .sw_if_index = sw_if_index, - .fib_index = fib_index, - .sclass = sclass, - .outer_src.ip4 = *outer_src, - .outer_dst.ip4 = *outer_dst, - }; - /* *INDENT-ON* */ - - vl_api_rpc_call_main_thread (gbp_learn_l3_cp, (u8 *) & gl3, sizeof (gl3)); -} - -static void -gbp_learn_ip6_dp (const ip6_address_t * ip, - u32 fib_index, u32 sw_if_index, sclass_t sclass, - const ip4_address_t * outer_src, - const ip4_address_t * outer_dst) -{ - /* *INDENT-OFF* */ - gbp_learn_l3_t gl3 = { - .ip = { - .ip6 = *ip, - }, - .sw_if_index = sw_if_index, - .fib_index = fib_index, - .sclass = sclass, - .outer_src.ip4 = *outer_src, - .outer_dst.ip4 = *outer_dst, - }; - /* *INDENT-ON* */ - - vl_api_rpc_call_main_thread (gbp_learn_l3_cp, (u8 *) & gl3, sizeof (gl3)); -} - -/** - * per-packet trace data - */ -typedef struct gbp_learn_l3_trace_t_ -{ - /* per-pkt trace data */ - ip46_address_t ip; - u32 sw_if_index; - u32 new; - u32 throttled; - u32 sclass; -} gbp_learn_l3_trace_t; - -static uword -gbp_learn_l3 (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame, - fib_protocol_t fproto) -{ - u32 n_left_from, *from, *to_next, next_index, thread_index, seed; - gbp_learn_main_t *glm; - f64 time_now; - - glm = &gbp_learn_main; - next_index = 0; - n_left_from = frame->n_vectors; - from = vlib_frame_vector_args (frame); - time_now = vlib_time_now (vm); - thread_index = vm->thread_index; - - seed = throttle_seed (&glm->gl_l3_throttle, thread_index, time_now); - - while (n_left_from > 0) - { - u32 n_left_to_next; - - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from > 0 && n_left_to_next > 0) - { - CLIB_UNUSED (const ip4_header_t *) ip4_0; - CLIB_UNUSED (const ip6_header_t *) ip6_0; - u32 bi0, sw_if_index0, t0, fib_index0; - ip4_address_t outer_src, outer_dst; - ethernet_header_t *eth0; - gbp_learn_next_t next0; - gbp_endpoint_t *ge0; - vlib_buffer_t *b0; - sclass_t sclass0; - - next0 = GBP_LEARN_NEXT_DROP; - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - sclass0 = vnet_buffer2 (b0)->gbp.sclass; - ip6_0 = NULL; - ip4_0 = NULL; - - vnet_feature_next (&next0, b0); - - if (vnet_buffer2 (b0)->gbp.flags & VXLAN_GBP_GPFLAGS_D) - { - t0 = 1; - ge0 = NULL; - goto trace; - } - - fib_index0 = fib_table_get_index_for_sw_if_index (fproto, - sw_if_index0); - - if (FIB_PROTOCOL_IP6 == fproto) - { - ip6_0 = vlib_buffer_get_current (b0); - eth0 = (ethernet_header_t *) (((u8 *) ip6_0) - sizeof (*eth0)); - - gbp_learn_get_outer (eth0, &outer_src, &outer_dst); - - ge0 = gbp_endpoint_find_ip6 (&ip6_0->src_address, fib_index0); - - if ((NULL == ge0) || - gbp_endpoint_update_required (ge0, sw_if_index0, sclass0)) - { - t0 = throttle_check (&glm->gl_l3_throttle, - thread_index, - ip6_address_hash_to_u32 - (&ip6_0->src_address), seed); - - if (!t0) - { - gbp_learn_ip6_dp (&ip6_0->src_address, - fib_index0, sw_if_index0, sclass0, - &outer_src, &outer_dst); - } - } - else - { - /* - * this update could happen simultaneoulsy from multiple - * workers but that's ok we are not interested in being - * very accurate. - */ - t0 = 0; - ge0->ge_last_time = time_now; - } - } - else - { - ip4_0 = vlib_buffer_get_current (b0); - eth0 = (ethernet_header_t *) (((u8 *) ip4_0) - sizeof (*eth0)); - - gbp_learn_get_outer (eth0, &outer_src, &outer_dst); - ge0 = gbp_endpoint_find_ip4 (&ip4_0->src_address, fib_index0); - - if ((NULL == ge0) || - gbp_endpoint_update_required (ge0, sw_if_index0, sclass0)) - { - t0 = throttle_check (&glm->gl_l3_throttle, thread_index, - ip4_0->src_address.as_u32, seed); - - if (!t0) - { - gbp_learn_ip4_dp (&ip4_0->src_address, - fib_index0, sw_if_index0, sclass0, - &outer_src, &outer_dst); - } - } - else - { - /* - * this update could happen simultaneoulsy from multiple - * workers but that's ok we are not interested in being - * very accurate. - */ - t0 = 0; - ge0->ge_last_time = time_now; - } - } - trace: - if (PREDICT_FALSE ((b0->flags & VLIB_BUFFER_IS_TRACED))) - { - gbp_learn_l3_trace_t *t; - - t = vlib_add_trace (vm, node, b0, sizeof (*t)); - if (FIB_PROTOCOL_IP6 == fproto && ip6_0) - ip46_address_set_ip6 (&t->ip, &ip6_0->src_address); - if (FIB_PROTOCOL_IP4 == fproto && ip4_0) - ip46_address_set_ip4 (&t->ip, &ip4_0->src_address); - t->new = (NULL == ge0); - t->throttled = t0; - t->sw_if_index = sw_if_index0; - t->sclass = sclass0; - } - - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - return frame->n_vectors; -} - -/* packet trace format function */ -static u8 * -format_gbp_learn_l3_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - gbp_learn_l3_trace_t *t = va_arg (*args, gbp_learn_l3_trace_t *); - - s = format (s, "new:%d throttled:%d ip:%U itf:%d sclass:%d", - t->new, t->throttled, - format_ip46_address, &t->ip, IP46_TYPE_ANY, t->sw_if_index, - t->sclass); - - return s; -} - -VLIB_NODE_FN (gbp_learn_ip4_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return (gbp_learn_l3 (vm, node, frame, FIB_PROTOCOL_IP4)); -} - -VLIB_NODE_FN (gbp_learn_ip6_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - return (gbp_learn_l3 (vm, node, frame, FIB_PROTOCOL_IP6)); -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (gbp_learn_ip4_node) = { - .name = "gbp-learn-ip4", - .vector_size = sizeof (u32), - .format_trace = format_gbp_learn_l3_trace, - .type = VLIB_NODE_TYPE_INTERNAL, -}; - -VNET_FEATURE_INIT (gbp_learn_ip4, static) = -{ - .arc_name = "ip4-unicast", - .node_name = "gbp-learn-ip4", -}; - -VLIB_REGISTER_NODE (gbp_learn_ip6_node) = { - .name = "gbp-learn-ip6", - .vector_size = sizeof (u32), - .format_trace = format_gbp_learn_l3_trace, - .type = VLIB_NODE_TYPE_INTERNAL, -}; - -VNET_FEATURE_INIT (gbp_learn_ip6, static) = -{ - .arc_name = "ip6-unicast", - .node_name = "gbp-learn-ip6", -}; - -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |