vom: Fix the l2 port type in bridge domain - vpp

diff options

author	Mohsin Kazmi <sykazmi@cisco.com>	2018-09-27 15:00:32 +0200
committer	Neale Ranns <nranns@cisco.com>	2018-09-29 17:06:30 +0000
commit	762d83c198c6c24cce4eb94a6d027f520d0b8383 (patch)
tree	a7e9c4f0cc872642a7e39cc6b2fcefa7d21070d1 /src
parent	539663c401b087e4576e41af35144e73e1907c9d (diff)

vom: Fix the l2 port type in bridge domain

Change-Id: I8aba11142daeacce892ec529c2229ec54ee427e2 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>

Diffstat (limited to 'src')

-rw-r--r--

src/vat/api_format.c

1 files changed, 5 insertions, 4 deletions

/* * node.c - ipfix probe graph node * * Copyright (c) 2017 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 <vlib/vlib.h> #include <vnet/vnet.h> #include <vnet/pg/pg.h> #include <vppinfra/crc32.h> #include <vppinfra/error.h> #include <flowprobe/flowprobe.h> #include <vnet/ip/ip6_packet.h> static void flowprobe_export_entry (vlib_main_t * vm, flowprobe_entry_t * e); /** * @file flow record generator graph node */ typedef struct { /** interface handle */ u32 rx_sw_if_index; u32 tx_sw_if_index; /** packet timestamp */ u64 timestamp; /** size of the buffer */ u16 buffer_size; /** L2 information */ u8 src_mac[6]; u8 dst_mac[6]; /** Ethertype */ u16 ethertype; /** L3 information */ ip46_address_t src_address; ip46_address_t dst_address; u8 protocol; u8 tos; /** L4 information */ u16 src_port; u16 dst_port; flowprobe_variant_t which; } flowprobe_trace_t; static char *flowprobe_variant_strings[] = { [FLOW_VARIANT_IP4] = "IP4", [FLOW_VARIANT_IP6] = "IP6", [FLOW_VARIANT_L2] = "L2", [FLOW_VARIANT_L2_IP4] = "L2-IP4", [FLOW_VARIANT_L2_IP6] = "L2-IP6", }; /* packet trace format function */ static u8 * format_flowprobe_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 *); flowprobe_trace_t *t = va_arg (*args, flowprobe_trace_t *); uword indent = format_get_indent (s); s = format (s, "FLOWPROBE[%s]: rx_sw_if_index %d, tx_sw_if_index %d, " "timestamp %lld, size %d", flowprobe_variant_strings[t->which], t->rx_sw_if_index, t->tx_sw_if_index, t->timestamp, t->buffer_size); if (t->which == FLOW_VARIANT_L2) s = format (s, "\n%U -> %U", format_white_space, indent, format_ethernet_address, &t->src_mac, format_ethernet_address, &t->dst_mac); if (t->protocol > 0 && (t->which == FLOW_VARIANT_L2_IP4 || t->which == FLOW_VARIANT_IP4 || t->which == FLOW_VARIANT_L2_IP6 || t->which == FLOW_VARIANT_IP6)) s = format (s, "\n%U%U: %U -> %U", format_white_space, indent, format_ip_protocol, t->protocol, format_ip46_address, &t->src_address, IP46_TYPE_ANY, format_ip46_address, &t->dst_address, IP46_TYPE_ANY); return s; } vlib_node_registration_t flowprobe_ip4_node; vlib_node_registration_t flowprobe_ip6_node; vlib_node_registration_t flowprobe_l2_node; /* No counters at the moment */ #define foreach_flowprobe_error \ _(COLLISION, "Hash table collisions") \ _(BUFFER, "Buffer allocation error") \ _(EXPORTED_PACKETS, "Exported packets") \ _(INPATH, "Exported packets in path") typedef enum { #define _(sym,str) FLOWPROBE_ERROR_##sym, foreach_flowprobe_error #undef _ FLOWPROBE_N_ERROR, } flowprobe_error_t; static char *flowprobe_error_strings[] = { #define _(sym,string) string, foreach_flowprobe_error #undef _ }; typedef enum { FLOWPROBE_NEXT_DROP, FLOWPROBE_NEXT_IP4_LOOKUP, FLOWPROBE_N_NEXT, } flowprobe_next_t; #define FLOWPROBE_NEXT_NODES { \ [FLOWPROBE_NEXT_DROP] = "error-drop", \ [FLOWPROBE_NEXT_IP4_LOOKUP] = "ip4-lookup", \ } static inline flowprobe_variant_t flowprobe_get_variant (flowprobe_variant_t which, flowprobe_record_t flags, u16 ethertype) { if (which == FLOW_VARIANT_L2 && (flags & FLOW_RECORD_L3 || flags & FLOW_RECORD_L4)) return ethertype == ETHERNET_TYPE_IP6 ? FLOW_VARIANT_L2_IP6 : ethertype == ETHERNET_TYPE_IP4 ? FLOW_VARIANT_L2_IP4 : FLOW_VARIANT_L2; return which; } static inline u32 flowprobe_common_add (vlib_buffer_t * to_b, flowprobe_entry_t * e, u16 offset) { u16 start = offset; /* Ingress interface */ u32 rx_if = clib_host_to_net_u32 (e->key.rx_sw_if_index); clib_memcpy (to_b->data + offset, &rx_if, sizeof (rx_if)); offset += sizeof (rx_if); /* Egress interface */ u32 tx_if = clib_host_to_net_u32 (e->key.tx_sw_if_index); clib_memcpy (to_b->data + offset, &tx_if, sizeof (tx_if)); offset += sizeof (tx_if); /* packet delta count */ u64 packetdelta = clib_host_to_net_u64 (e->packetcount); clib_memcpy (to_b->data + offset, &packetdelta, sizeof (u64)); offset += sizeof (u64); return offset - start; } static inline u32 flowprobe_l2_add (vlib_buffer_t * to_b, flowprobe_entry_t * e, u16 offset) { u16 start = offset; /* src mac address */ clib_memcpy (to_b->data + offset, &e->key.src_mac, 6); offset += 6; /* dst mac address */ clib_memcpy (to_b->data + offset, &e->key.dst_mac, 6); offset += 6; /* ethertype */ clib_memcpy (to_b->data + offset, &e->key.ethertype, 2); offset += 2; return offset - start; } static inline u32 flowprobe_l3_ip6_add (vlib_buffer_t * to_b, flowprobe_entry_t * e, u16 offset) { u16 start = offset; /* ip6 src address */ clib_memcpy (to_b->data + offset, &e->key.src_address, sizeof (ip6_address_t)); offset += sizeof (ip6_address_t); /* ip6 dst address */ clib_memcpy (to_b->data + offset, &e->key.dst_address, sizeof (ip6_address_t)); offset += sizeof (ip6_address_t); /* Protocol */ to_b->data[offset++] = e->key.protocol; /* octetDeltaCount */ u64 octetdelta = clib_host_to_net_u64 (e->octetcount); clib_memcpy (to_b->data + offset, &octetdelta, sizeof (u64)); offset += sizeof (u64); return offset - start; } static inline u32 flowprobe_l3_ip4_add (vlib_buffer_t * to_b, flowprobe_entry_t * e, u16 offset) { u16 start = offset; /* ip4 src address */ clib_memcpy (to_b->data + offset, &e->key.src_address.ip4, sizeof (ip4_address_t)); offset += sizeof (ip4_address_t); /* ip4 dst address */ clib_memcpy (to_b->data + offset, &e->key.dst_address.ip4, sizeof (ip4_address_t)); offset += sizeof (ip4_address_t); /* Protocol */ to_b->data[offset++] = e->key.protocol; /* octetDeltaCount */ u64 octetdelta = clib_host_to_net_u64 (e->octetcount); clib_memcpy (to_b->data + offset, &octetdelta, sizeof (u64)); offset += sizeof (u64); return offset - start; } static inline u32 flowprobe_l4_add (vlib_buffer_t * to_b, flowprobe_entry_t * e, u16 offset) { u16 start = offset; /* src port */ clib_memcpy (to_b->data + offset, &e->key.src_port, 2); offset += 2; /* dst port */ clib_memcpy (to_b->data + offset, &e->key.dst_port, 2); offset += 2; return offset - start; } static inline u32 flowprobe_hash (flowprobe_key_t * k) { flowprobe_main_t *fm = &flowprobe_main; u32 h = 0; #ifdef clib_crc32c_uses_intrinsics h = clib_crc32c ((u8 *) k->as_u32, FLOWPROBE_KEY_IN_U32); #else u64 tmp = k->as_u32[0] ^ k->as_u32[1] ^ k->as_u32[2] ^ k->as_u32[3] ^ k->as_u32[4]; h = clib_xxhash (tmp); #endif return h >> (32 - fm->ht_log2len); } flowprobe_entry_t * flowprobe_lookup (u32 my_cpu_number, flowprobe_key_t * k, u32 * poolindex, bool * collision) { flowprobe_main_t *fm = &flowprobe_main; flowprobe_entry_t *e; u32 h; h = (fm->active_timer) ? flowprobe_hash (k) : 0; /* Lookup in the flow state pool */ *poolindex = fm->hash_per_worker[my_cpu_number][h]; if (*poolindex != ~0) { e = pool_elt_at_index (fm->pool_per_worker[my_cpu_number], *poolindex); if (e) { /* Verify key or report collision */ if (memcmp (k, &e->key, sizeof (flowprobe_key_t))) *collision = true; return e; } } return 0; } flowprobe_entry_t * flowprobe_create (u32 my_cpu_number, flowprobe_key_t * k, u32 * poolindex) { flowprobe_main_t *fm = &flowprobe_main; u32 h; flowprobe_entry_t *e; /* Get my index */ h = (fm->active_timer) ? flowprobe_hash (k) : 0; pool_get (fm->pool_per_worker[my_cpu_number], e); *poolindex = e - fm->pool_per_worker[my_cpu_number]; fm->hash_per_worker[my_cpu_number][h] = *poolindex; e->key = *k; if (fm->passive_timer > 0) { e->passive_timer_handle = tw_timer_start_2t_1w_2048sl (fm->timers_per_worker[my_cpu_number], *poolindex, 0, fm->passive_timer); } return e; } static inline void add_to_flow_record_state (vlib_main_t * vm, vlib_node_runtime_t * node, flowprobe_main_t * fm, vlib_buffer_t * b, u64 timestamp, u16 length, flowprobe_variant_t which, flowprobe_trace_t * t) { if (fm->disabled) return; u32 my_cpu_number = vm->thread_index; u16 octets = 0; flowprobe_record_t flags = fm->context[which].flags; bool collect_ip4 = false, collect_ip6 = false; ASSERT (b); ethernet_header_t *eth = vlib_buffer_get_current (b); u16 ethertype = clib_net_to_host_u16 (eth->type); /* *INDENT-OFF* */ flowprobe_key_t k = { {0} }; /* *INDENT-ON* */ ip4_header_t *ip4 = 0; ip6_header_t *ip6 = 0; udp_header_t *udp = 0; if (flags & FLOW_RECORD_L3 || flags & FLOW_RECORD_L4) { collect_ip4 = which == FLOW_VARIANT_L2_IP4 || which == FLOW_VARIANT_IP4; collect_ip6 = which == FLOW_VARIANT_L2_IP6 || which == FLOW_VARIANT_IP6; } k.rx_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX]; k.tx_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX]; k.which = which; if (flags & FLOW_RECORD_L2) { clib_memcpy (k.src_mac, eth->src_address, 6); clib_memcpy (k.dst_mac, eth->dst_address, 6); k.ethertype = ethertype; } if (collect_ip6 && ethertype == ETHERNET_TYPE_IP6) { ip6 = (ip6_header_t *) (eth + 1); udp = (udp_header_t *) (ip6 + 1); if (flags & FLOW_RECORD_L3) { k.src_address.as_u64[0] = ip6->src_address.as_u64[0]; k.src_address.as_u64[1] = ip6->src_address.as_u64[1]; k.dst_address.as_u64[0] = ip6->dst_address.as_u64[0]; k.dst_address.as_u64[1] = ip6->dst_address.as_u64[1]; } k.protocol = ip6->protocol; octets = clib_net_to_host_u16 (ip6->payload_length) + sizeof (ip6_header_t); } if (collect_ip4 && ethertype == ETHERNET_TYPE_IP4) { ip4 = (ip4_header_t *) (eth + 1); udp = (udp_header_t *) (ip4 + 1); if (flags & FLOW_RECORD_L3) { k.src_address.ip4.as_u32 = ip4->src_address.as_u32; k.dst_address.ip4.as_u32 = ip4->dst_address.as_u32; } k.protocol = ip4->protocol; octets = clib_net_to_host_u16 (ip4->length); } if ((flags & FLOW_RECORD_L4) && udp && (k.protocol == IP_PROTOCOL_TCP || k.protocol == IP_PROTOCOL_UDP)) { k.src_port = udp->src_port; k.dst_port = udp->dst_port; } if (t) { t->rx_sw_if_index = k.rx_sw_if_index; t->tx_sw_if_index = k.tx_sw_if_index; clib_memcpy (t->src_mac, k.src_mac, 6); clib_memcpy (t->dst_mac, k.dst_mac, 6); t->ethertype = k.ethertype; t->src_address.ip4.as_u32 = k.src_address.ip4.as_u32; t->dst_address.ip4.as_u32 = k.dst_address.ip4.as_u32; t->protocol = k.protocol; t->src_port = k.src_port; t->dst_port = k.dst_port; t->which = k.which; } flowprobe_entry_t *e = 0; f64 now = vlib_time_now (vm); if (fm->active_timer > 0) { u32 poolindex = ~0; bool collision = false; e = flowprobe_lookup (my_cpu_number, &k, &poolindex, &collision); if (collision) { /* Flush data and clean up entry for reuse. */ if (e->packetcount) flowprobe_export_entry (vm, e); e->key = k; vlib_node_increment_counter (vm, node->node_index, FLOWPROBE_ERROR_COLLISION, 1); } if (!e) /* Create new entry */ { e = flowprobe_create (my_cpu_number, &k, &poolindex); e->last_exported = now; } } else { e = &fm->stateless_entry[my_cpu_number]; e->key = k; } if (e) { /* Updating entry */ e->packetcount++; e->octetcount += octets; e->last_updated = now; if (fm->active_timer == 0 || (now > e->last_exported + fm->active_timer)) flowprobe_export_entry (vm, e); } } static u16 flowprobe_get_headersize (void) { return sizeof (ip4_header_t) + sizeof (udp_header_t) + sizeof (ipfix_message_header_t) + sizeof (ipfix_set_header_t); } static void flowprobe_export_send (vlib_main_t * vm, vlib_buffer_t * b0, flowprobe_variant_t which) { flowprobe_main_t *fm = &flowprobe_main; flow_report_main_t *frm = &flow_report_main; vlib_frame_t *f; ip4_ipfix_template_packet_t *tp; ipfix_set_header_t *s; ipfix_message_header_t *h; ip4_header_t *ip; udp_header_t *udp; flowprobe_record_t flags = fm->context[which].flags; u32 my_cpu_number = vm->thread_index; /* Fill in header */ flow_report_stream_t *stream; /* Nothing to send */ if (fm->context[which].next_record_offset_per_worker[my_cpu_number] <= flowprobe_get_headersize ()) return; u32 i, index = vec_len (frm->streams); for (i = 0; i < index; i++) if (frm->streams[i].domain_id == 1) { index = i; break; } if (i == vec_len (frm->streams)) { vec_validate (frm->streams, index); frm->streams[index].domain_id = 1; } stream = &frm->streams[index]; tp = vlib_buffer_get_current (b0); ip = (ip4_header_t *) & tp->ip4; udp = (udp_header_t *) (ip + 1); h = (ipfix_message_header_t *) (udp + 1); s = (ipfix_set_header_t *) (h + 1); ip->ip_version_and_header_length = 0x45; ip->ttl = 254; ip->protocol = IP_PROTOCOL_UDP; ip->flags_and_fragment_offset = 0; ip->src_address.as_u32 = frm->src_address.as_u32; ip->dst_address.as_u32 = frm->ipfix_collector.as_u32; udp->src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix); udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix); udp->checksum = 0; /* FIXUP: message header export_time */ h->export_time = (u32) (((f64) frm->unix_time_0) + (vlib_time_now (frm->vlib_main) - frm->vlib_time_0)); h->export_time = clib_host_to_net_u32 (h->export_time); h->domain_id = clib_host_to_net_u32 (stream->domain_id); /* FIXUP: message header sequence_number */ h->sequence_number = stream->sequence_number++; h->sequence_number = clib_host_to_net_u32 (h->sequence_number); s->set_id_length = ipfix_set_id_length (fm->template_reports[flags], b0->current_length - (sizeof (*ip) + sizeof (*udp) + sizeof (*h))); h->version_length = version_length (b0->current_length - (sizeof (*ip) + sizeof (*udp))); ip->length = clib_host_to_net_u16 (b0->current_length); ip->checksum = ip4_header_checksum (ip); udp->length = clib_host_to_net_u16 (b0->current_length - sizeof (*ip)); if (frm->udp_checksum) { /* RFC 7011 section 10.3.2. */ udp->checksum = ip4_tcp_udp_compute_checksum (vm, b0, ip); if (udp->checksum == 0) udp->checksum = 0xffff; } ASSERT (ip->checksum == ip4_header_checksum (ip)); /* Find or allocate a frame */ f = fm->context[which].frames_per_worker[my_cpu_number]; if (PREDICT_FALSE (f == 0)) { u32 *to_next; f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); fm->context[which].frames_per_worker[my_cpu_number] = f; u32 bi0 = vlib_get_buffer_index (vm, b0); /* Enqueue the buffer */ to_next = vlib_frame_vector_args (f); to_next[0] = bi0; f->n_vectors = 1; } vlib_put_frame_to_node (vm, ip4_lookup_node.index, f); vlib_node_increment_counter (vm, flowprobe_l2_node.index, FLOWPROBE_ERROR_EXPORTED_PACKETS, 1); fm->context[which].frames_per_worker[my_cpu_number] = 0; fm->context[which].buffers_per_worker[my_cpu_number] = 0; fm->context[which].next_record_offset_per_worker[my_cpu_number] = flowprobe_get_headersize (); } static vlib_buffer_t * flowprobe_get_buffer (vlib_main_t * vm, flowprobe_variant_t which) { flowprobe_main_t *fm = &flowprobe_main; flow_report_main_t *frm = &flow_report_main; vlib_buffer_t *b0; u32 bi0; vlib_buffer_free_list_t *fl; u32 my_cpu_number = vm->thread_index; /* Find or allocate a buffer */ b0 = fm->context[which].buffers_per_worker[my_cpu_number]; /* Need to allocate a buffer? */ if (PREDICT_FALSE (b0 == 0)) { if (vlib_buffer_alloc (vm, &bi0, 1) != 1) { vlib_node_increment_counter (vm, flowprobe_l2_node.index, FLOWPROBE_ERROR_BUFFER, 1); return 0; } /* Initialize the buffer */ b0 = fm->context[which].buffers_per_worker[my_cpu_number] = vlib_get_buffer (vm, bi0); fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); vlib_buffer_init_for_free_list (b0, fl); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); b0->current_data = 0; b0->current_length = flowprobe_get_headersize (); b0->flags |= (VLIB_BUFFER_TOTAL_LENGTH_VALID | VLIB_BUFFER_FLOW_REPORT); vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0; vnet_buffer (b0)->sw_if_index[VLIB_TX] = frm->fib_index; fm->context[which].next_record_offset_per_worker[my_cpu_number] = b0->current_length; } return b0; } static void flowprobe_export_entry (vlib_main_t * vm, flowprobe_entry_t * e) { u32 my_cpu_number = vm->thread_index; flowprobe_main_t *fm = &flowprobe_main; flow_report_main_t *frm = &flow_report_main; vlib_buffer_t *b0; bool collect_ip4 = false, collect_ip6 = false; flowprobe_variant_t which = e->key.which; flowprobe_record_t flags = fm->context[which].flags; u16 offset = fm->context[which].next_record_offset_per_worker[my_cpu_number]; if (offset < flowprobe_get_headersize ()) offset = flowprobe_get_headersize (); b0 = flowprobe_get_buffer (vm, which); /* No available buffer, what to do... */ if (b0 == 0) return; if (flags & FLOW_RECORD_L3) { collect_ip4 = which == FLOW_VARIANT_L2_IP4 || which == FLOW_VARIANT_IP4; collect_ip6 = which == FLOW_VARIANT_L2_IP6 || which == FLOW_VARIANT_IP6; } offset += flowprobe_common_add (b0, e, offset); if (flags & FLOW_RECORD_L2) offset += flowprobe_l2_add (b0, e, offset); if (collect_ip6) offset += flowprobe_l3_ip6_add (b0, e, offset); if (collect_ip4) offset += flowprobe_l3_ip4_add (b0, e, offset); if (flags & FLOW_RECORD_L4) offset += flowprobe_l4_add (b0, e, offset); /* Reset per flow-export counters */ e->packetcount = 0; e->octetcount = 0; e->last_exported = vlib_time_now (vm); b0->current_length = offset; fm->context[which].next_record_offset_per_worker[my_cpu_number] = offset; /* Time to flush the buffer? */ if (offset + fm->template_size[flags] > frm->path_mtu) flowprobe_export_send (vm, b0, which); } uword flowprobe_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, flowprobe_variant_t which) { u32 n_left_from, *from, *to_next; flowprobe_next_t next_index; flowprobe_main_t *fm = &flowprobe_main; u64 now; now = (u64) ((vlib_time_now (vm) - fm->vlib_time_0) * 1e9); now += fm->nanosecond_time_0; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; next_index = node->cached_next_index; 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 >= 4 && n_left_to_next >= 2) { u32 next0 = FLOWPROBE_NEXT_DROP; u32 next1 = FLOWPROBE_NEXT_DROP; u16 len0, len1; u32 bi0, bi1; vlib_buffer_t *b0, *b1; /* Prefetch next iteration. */ { vlib_buffer_t *p2, *p3; p2 = vlib_get_buffer (vm, from[2]); p3 = vlib_get_buffer (vm, from[3]); vlib_prefetch_buffer_header (p2, LOAD); vlib_prefetch_buffer_header (p3, LOAD); CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE); CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE); } /* speculatively enqueue b0 and b1 to the current next frame */ to_next[0] = bi0 = from[0]; to_next[1] = bi1 = from[1]; from += 2; to_next += 2; n_left_from -= 2; n_left_to_next -= 2; b0 = vlib_get_buffer (vm, bi0); b1 = vlib_get_buffer (vm, bi1); vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_TX], &next0, b0); vnet_feature_next (vnet_buffer (b1)->sw_if_index[VLIB_TX], &next1, b1); len0 = vlib_buffer_length_in_chain (vm, b0); ethernet_header_t *eh0 = vlib_buffer_get_current (b0); u16 ethertype0 = clib_net_to_host_u16 (eh0->type); if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_FLOW_REPORT) == 0)) add_to_flow_record_state (vm, node, fm, b0, now, len0, flowprobe_get_variant (which, fm->context[which].flags, ethertype0), 0); len1 = vlib_buffer_length_in_chain (vm, b1); ethernet_header_t *eh1 = vlib_buffer_get_current (b1); u16 ethertype1 = clib_net_to_host_u16 (eh1->type); if (PREDICT_TRUE ((b1->flags & VLIB_BUFFER_FLOW_REPORT) == 0)) add_to_flow_record_state (vm, node, fm, b1, now, len1, flowprobe_get_variant (which, fm->context[which].flags, ethertype1), 0); /* verify speculative enqueues, maybe switch current next frame */ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, n_left_to_next, bi0, bi1, next0, next1); } while (n_left_from > 0 && n_left_to_next > 0) { u32 bi0; vlib_buffer_t *b0; u32 next0 = FLOWPROBE_NEXT_DROP; u16 len0; /* speculatively enqueue b0 to the current next frame */ 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); vnet_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_TX], &next0, b0); len0 = vlib_buffer_length_in_chain (vm, b0); ethernet_header_t *eh0 = vlib_buffer_get_current (b0); u16 ethertype0 = clib_net_to_host_u16 (eh0->type); if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_FLOW_REPORT) == 0)) { flowprobe_trace_t *t = 0; if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && (b0->flags & VLIB_BUFFER_IS_TRACED))) t = vlib_add_trace (vm, node, b0, sizeof (*t)); add_to_flow_record_state (vm, node, fm, b0, now, len0, flowprobe_get_variant (which, fm->context[which].flags, ethertype0), t); } /* 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; } static uword flowprobe_ip4_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return flowprobe_node_fn (vm, node, frame, FLOW_VARIANT_IP4); } static uword flowprobe_ip6_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return flowprobe_node_fn (vm, node, frame, FLOW_VARIANT_IP6); } static uword flowprobe_l2_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { return flowprobe_node_fn (vm, node, frame, FLOW_VARIANT_L2); } static inline void flush_record (flowprobe_variant_t which) { vlib_main_t *vm = vlib_get_main (); vlib_buffer_t *b = flowprobe_get_buffer (vm, which); if (b) flowprobe_export_send (vm, b, which); } void flowprobe_flush_callback_ip4 (void) { flush_record (FLOW_VARIANT_IP4); } void flowprobe_flush_callback_ip6 (void) { flush_record (FLOW_VARIANT_IP6); } void flowprobe_flush_callback_l2 (void) { flush_record (FLOW_VARIANT_L2); flush_record (FLOW_VARIANT_L2_IP4); flush_record (FLOW_VARIANT_L2_IP6); } static void flowprobe_delete_by_index (u32 my_cpu_number, u32 poolindex) { flowprobe_main_t *fm = &flowprobe_main; flowprobe_entry_t *e; u32 h; e = pool_elt_at_index (fm->pool_per_worker[my_cpu_number], poolindex); /* Get my index */ h = flowprobe_hash (&e->key); /* Reset hash */ fm->hash_per_worker[my_cpu_number][h] = ~0; pool_put_index (fm->pool_per_worker[my_cpu_number], poolindex); } /* Per worker process processing the active/passive expired entries */ static uword flowprobe_walker_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f) { flowprobe_main_t *fm = &flowprobe_main; flow_report_main_t *frm = &flow_report_main; flowprobe_entry_t *e; /* * $$$$ Remove this check from here and track FRM status and disable * this process if required. */ if (frm->ipfix_collector.as_u32 == 0 || frm->src_address.as_u32 == 0) { fm->disabled = true; return 0; } fm->disabled = false; u32 cpu_index = os_get_thread_index (); u32 *to_be_removed = 0, *i; /* * Tick the timer when required and process the vector of expired * timers */ f64 start_time = vlib_time_now (vm); u32 count = 0; tw_timer_expire_timers_2t_1w_2048sl (fm->timers_per_worker[cpu_index], start_time); vec_foreach (i, fm->expired_passive_per_worker[cpu_index]) { u32 exported = 0; f64 now = vlib_time_now (vm); if (now > start_time + 100e-6 || exported > FLOW_MAXIMUM_EXPORT_ENTRIES - 1) break; if (pool_is_free_index (fm->pool_per_worker[cpu_index], *i)) { clib_warning ("Element is %d is freed already\n", *i); continue; } else e = pool_elt_at_index (fm->pool_per_worker[cpu_index], *i); /* Check last update timestamp. If it is longer than passive time nuke * entry. Otherwise restart timer with what's left * Premature passive timer by more than 10% */ if ((now - e->last_updated) < (fm->passive_timer * 0.9)) { f64 delta = fm->passive_timer - (now - e->last_updated); e->passive_timer_handle = tw_timer_start_2t_1w_2048sl (fm->timers_per_worker[cpu_index], *i, 0, delta); } else /* Nuke entry */ { vec_add1 (to_be_removed, *i); } /* If anything to report send it to the exporter */ if (e->packetcount && now > e->last_exported + fm->active_timer) { exported++; flowprobe_export_entry (vm, e); } count++; } if (count) vec_delete (fm->expired_passive_per_worker[cpu_index], count, 0); vec_foreach (i, to_be_removed) flowprobe_delete_by_index (cpu_index, *i); vec_free (to_be_removed); return 0; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (flowprobe_ip4_node) = { .function = flowprobe_ip4_node_fn, .name = "flowprobe-ip4", .vector_size = sizeof (u32), .format_trace = format_flowprobe_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(flowprobe_error_strings), .error_strings = flowprobe_error_strings, .n_next_nodes = FLOWPROBE_N_NEXT, .next_nodes = FLOWPROBE_NEXT_NODES, }; VLIB_REGISTER_NODE (flowprobe_ip6_node) = { .function = flowprobe_ip6_node_fn, .name = "flowprobe-ip6", .vector_size = sizeof (u32), .format_trace = format_flowprobe_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(flowprobe_error_strings), .error_strings = flowprobe_error_strings, .n_next_nodes = FLOWPROBE_N_NEXT, .next_nodes = FLOWPROBE_NEXT_NODES, }; VLIB_REGISTER_NODE (flowprobe_l2_node) = { .function = flowprobe_l2_node_fn, .name = "flowprobe-l2", .vector_size = sizeof (u32), .format_trace = format_flowprobe_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(flowprobe_error_strings), .error_strings = flowprobe_error_strings, .n_next_nodes = FLOWPROBE_N_NEXT, .next_nodes = FLOWPROBE_NEXT_NODES, }; VLIB_REGISTER_NODE (flowprobe_walker_node) = { .function = flowprobe_walker_process, .name = "flowprobe-walker", .type = VLIB_NODE_TYPE_INPUT, .state = VLIB_NODE_STATE_INTERRUPT, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


context:
space:
mode: