#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>
-/**
- * Grouping of global data for the GBP source EPG classification feature
- */
-typedef struct gbp_learn_main_t_
-{
- /**
- * Next nodes for L2 output features
- */
- u32 gl_l2_input_feat_next[32];
-
- /**
- * logger - VLIB log class
- */
- vlib_log_class_t gl_logger;
-
- /**
- * throttles for the DP leanring
- */
- throttle_t gl_l2_throttle;
- throttle_t gl_l3_throttle;
-} gbp_learn_main_t;
-
-/**
- * The maximum learning rate per-hashed EP
- */
-#define GBP_ENDPOINT_HASH_LEARN_RATE (1e-2)
-
-static gbp_learn_main_t gbp_learn_main;
-
-#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;
- epg_id_t epg;
- 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->epg);
-
- vec_add1 (ips, gl2->ip);
-
- ASSERT (!ip46_address_is_zero (&gl2->outer_src));
- ASSERT (!ip46_address_is_zero (&gl2->outer_dst));
-
- /*
- * 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->epg,
- (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, epg_id_t epg,
- 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,
- .epg = epg,
- .ip.ip4 = *ip,
- .outer_src.ip4 = *outer_src,
- .outer_dst.ip4 = *outer_dst,
- };
- mac_address_from_bytes (&gl2.mac, mac);
-
- ASSERT (!ip46_address_is_zero (&gl2.outer_src));
- ASSERT (!ip46_address_is_zero (&gl2.outer_dst));
+gbp_learn_main_t gbp_learn_main;
- 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, epg_id_t epg,
- const ip4_address_t * outer_src,
- const ip4_address_t * outer_dst)
+void
+gbp_learn_enable (u32 sw_if_index, gbb_learn_mode_t mode)
{
- gbp_learn_l2_t gl2 = {
- .sw_if_index = sw_if_index,
- .bd_index = bd_index,
- .epg = epg,
- .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,
- epg_id_t epg,
- 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,
- .epg = epg,
- .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 epg;
- u32 d_bit;
-} 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;
-}
-
-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)
+ if (GBP_LEARN_MODE_L2 == mode)
{
- 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;
- u32 bi0, sw_if_index0, t0, epg0;
- const ethernet_header_t *eh0;
- gbp_bridge_domain_t *gb0;
- gbp_learn_next_t next0;
- gbp_endpoint_t *ge0;
- vlib_buffer_t *b0;
-
- 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);
- epg0 = vnet_buffer2 (b0)->gbp.src_epg;
-
- 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 || ge0->ge_fwd.gef_itf != sw_if_index0)
-
- {
- /*
- * 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);
-
- 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, epg0,
- &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, epg0,
- &outer_src, &outer_dst);
-
- break;
- }
- default:
- gbp_learn_l2_dp (eh0->src_address,
- vnet_buffer (b0)->l2.bd_index,
- sw_if_index0, epg0,
- &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->epg = epg0;
- 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);
+ l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_GBP_LEARN, 1);
}
-
- 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 epg:%d",
- t->new, t->throttled, t->d_bit,
- format_mac_address_t, &t->mac, t->sw_if_index, t->epg);
-
- 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;
- epg_id_t epg;
- 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->epg);
-
- 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->epg,
- (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, epg_id_t epg,
- 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,
- .epg = epg,
- .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, epg_id_t epg,
- 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,
- .epg = epg,
- .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 epg;
-} 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)
+ else
{
- 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)
- {
- u32 bi0, sw_if_index0, t0, epg0, fib_index0;
- CLIB_UNUSED (const ip4_header_t *) ip4_0;
- CLIB_UNUSED (const ip6_header_t *) ip6_0;
- ip4_address_t outer_src, outer_dst;
- ethernet_header_t *eth0;
- gbp_learn_next_t next0;
- gbp_endpoint_t *ge0;
- vlib_buffer_t *b0;
-
- 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];
- epg0 = vnet_buffer2 (b0)->gbp.src_epg;
- 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)
- {
- 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, epg0,
- &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)
- {
- 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, epg0,
- &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->epg = epg0;
- }
-
- 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);
+ vnet_feature_enable_disable ("ip4-unicast",
+ "gbp-learn-ip4", sw_if_index, 1, 0, 0);
+ vnet_feature_enable_disable ("ip6-unicast",
+ "gbp-learn-ip6", sw_if_index, 1, 0, 0);
}
-
- return frame->n_vectors;
}
-/* packet trace format function */
-static u8 *
-format_gbp_learn_l3_trace (u8 * s, va_list * args)
+void
+gbp_learn_disable (u32 sw_if_index, gbb_learn_mode_t mode)
{
- 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 epg:%d",
- t->new, t->throttled,
- format_ip46_address, &t->ip, IP46_TYPE_ANY, t->sw_if_index,
- t->epg);
-
- 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));
+ if (GBP_LEARN_MODE_L2 == mode)
+ {
+ l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_GBP_LEARN, 0);
+ }
+ else
+ {
+ vnet_feature_enable_disable ("ip4-unicast",
+ "gbp-learn-ip4", sw_if_index, 0, 0, 0);
+ vnet_feature_enable_disable ("ip6-unicast",
+ "gbp-learn-ip6", sw_if_index, 0, 0, 0);
+ }
}
-/* *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* */
-
static clib_error_t *
gbp_learn_init (vlib_main_t * vm)
{
Code Review / vpp.git / blobdiff