X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Finterface_output.c;h=47844dcd68a5f168f18cd5ec4d5819b48e0f6287;hb=e8ea6be8dfb626b5bb4ff3355ce8037724ce1d83;hp=593457c10cf9595e4940a0d847216c8a69cea82c;hpb=08f2a5dae9663eafa09685ebebf672aa6b0b7ae0;p=vpp.git diff --git a/src/vnet/interface_output.c b/src/vnet/interface_output.c index 593457c10cf..47844dcd68a 100644 --- a/src/vnet/interface_output.c +++ b/src/vnet/interface_output.c @@ -39,18 +39,25 @@ #include #include +#include +#include #include #include #include #include +#include +#include +#include +#include +#include +#include +#include typedef struct { u32 sw_if_index; u32 flags; - u16 gso_size; - u8 gso_l4_hdr_sz; - u8 data[128 - 3 * sizeof (u32)]; + u8 data[128 - 2 * sizeof (u32)]; } interface_output_trace_t; @@ -78,20 +85,8 @@ format_vnet_interface_output_trace (u8 * s, va_list * va) else { si = vnet_get_sw_interface (vnm, t->sw_if_index); - s = - format (s, "%U ", format_vnet_sw_interface_name, vnm, si, - t->flags); - } -#define _(bit, name, v, x) \ - if (v && (t->flags & VNET_BUFFER_F_##name)) \ - s = format (s, "%s ", v); - foreach_vnet_buffer_flag -#undef _ - if (t->flags & VNET_BUFFER_F_GSO) - { - s = format (s, "\n%Ugso_sz %d gso_l4_hdr_sz %d", - format_white_space, indent + 2, t->gso_size, - t->gso_l4_hdr_sz); + s = format (s, "%U flags 0x%08x", format_vnet_sw_interface_name, vnm, + si, t->flags); } s = format (s, "\n%U%U", format_white_space, indent, @@ -100,6 +95,7 @@ format_vnet_interface_output_trace (u8 * s, va_list * va) } return s; } +#endif /* CLIB_MARCH_VARIANT */ static void vnet_interface_output_trace (vlib_main_t * vm, @@ -132,8 +128,6 @@ vnet_interface_output_trace (vlib_main_t * vm, t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX]; t0->flags = b0->flags; - t0->gso_size = vnet_buffer2 (b0)->gso_size; - t0->gso_l4_hdr_sz = vnet_buffer2 (b0)->gso_l4_hdr_sz; clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0), sizeof (t0->data)); } @@ -142,8 +136,6 @@ vnet_interface_output_trace (vlib_main_t * vm, t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0])); t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX]; t1->flags = b1->flags; - t1->gso_size = vnet_buffer2 (b1)->gso_size; - t1->gso_l4_hdr_sz = vnet_buffer2 (b1)->gso_l4_hdr_sz; clib_memcpy_fast (t1->data, vlib_buffer_get_current (b1), sizeof (t1->data)); } @@ -166,8 +158,6 @@ vnet_interface_output_trace (vlib_main_t * vm, t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX]; t0->flags = b0->flags; - t0->gso_size = vnet_buffer2 (b0)->gso_size; - t0->gso_l4_hdr_sz = vnet_buffer2 (b0)->gso_l4_hdr_sz; clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0), sizeof (t0->data)); } @@ -177,707 +167,521 @@ vnet_interface_output_trace (vlib_main_t * vm, } static_always_inline void -calc_checksums (vlib_main_t * vm, vlib_buffer_t * b) +vnet_interface_output_handle_offload (vlib_main_t *vm, vlib_buffer_t *b) { - tcp_header_t *th; - udp_header_t *uh; - - int is_ip4 = (b->flags & VNET_BUFFER_F_IS_IP4) != 0; - int is_ip6 = (b->flags & VNET_BUFFER_F_IS_IP6) != 0; - - ASSERT (!(is_ip4 && is_ip6)); + if (b->flags & VNET_BUFFER_F_GSO) + return; + vnet_calc_checksums_inline (vm, b, b->flags & VNET_BUFFER_F_IS_IP4, + b->flags & VNET_BUFFER_F_IS_IP6); + vnet_calc_outer_checksums_inline (vm, b); +} - th = (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset); - uh = (udp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset); +static_always_inline uword +vnet_interface_output_node_inline (vlib_main_t *vm, u32 sw_if_index, + vlib_combined_counter_main_t *ccm, + vlib_buffer_t **b, void **p, + u32 config_index, u8 arc, u32 n_left, + int processing_level) +{ + u32 n_bytes = 0; + u32 n_bytes0, n_bytes1, n_bytes2, n_bytes3; + u32 ti = vm->thread_index; - if (is_ip4) + while (n_left >= 8) { - ip4_header_t *ip4; + u32 or_flags; - ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset); - if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM) - ip4->checksum = ip4_header_checksum (ip4); - if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM) + /* Prefetch next iteration. */ + vlib_prefetch_buffer_header (b[4], LOAD); + vlib_prefetch_buffer_header (b[5], LOAD); + vlib_prefetch_buffer_header (b[6], LOAD); + vlib_prefetch_buffer_header (b[7], LOAD); + + if (processing_level >= 1) + or_flags = b[0]->flags | b[1]->flags | b[2]->flags | b[3]->flags; + + /* Be grumpy about zero length buffers for benefit of + driver tx function. */ + ASSERT (b[0]->current_length > 0); + ASSERT (b[1]->current_length > 0); + ASSERT (b[2]->current_length > 0); + ASSERT (b[3]->current_length > 0); + + n_bytes += n_bytes0 = vlib_buffer_length_in_chain (vm, b[0]); + n_bytes += n_bytes1 = vlib_buffer_length_in_chain (vm, b[1]); + n_bytes += n_bytes2 = vlib_buffer_length_in_chain (vm, b[2]); + n_bytes += n_bytes3 = vlib_buffer_length_in_chain (vm, b[3]); + + if (processing_level >= 3) { - th->checksum = 0; - th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4); + p[0] = vlib_buffer_get_current (b[0]); + p[1] = vlib_buffer_get_current (b[1]); + p[2] = vlib_buffer_get_current (b[2]); + p[3] = vlib_buffer_get_current (b[3]); + p += 4; } - else if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) - uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4); - } - else if (is_ip6) - { - int bogus; - ip6_header_t *ip6; - ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset); - if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM) + if (processing_level >= 2) { - th->checksum = 0; - th->checksum = - ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus); + u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3; + tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; + tx_swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX]; + tx_swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX]; + tx_swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX]; + + /* update vlan subif tx counts, if required */ + if (PREDICT_FALSE (tx_swif0 != sw_if_index)) + vlib_increment_combined_counter (ccm, ti, tx_swif0, 1, n_bytes0); + + if (PREDICT_FALSE (tx_swif1 != sw_if_index)) + vlib_increment_combined_counter (ccm, ti, tx_swif1, 1, n_bytes1); + + if (PREDICT_FALSE (tx_swif2 != sw_if_index)) + vlib_increment_combined_counter (ccm, ti, tx_swif2, 1, n_bytes2); + + if (PREDICT_FALSE (tx_swif3 != sw_if_index)) + vlib_increment_combined_counter (ccm, ti, tx_swif3, 1, n_bytes3); + + if (PREDICT_FALSE (config_index != ~0)) + { + vnet_buffer (b[0])->feature_arc_index = arc; + b[0]->current_config_index = config_index; + vnet_buffer (b[1])->feature_arc_index = arc; + b[1]->current_config_index = config_index; + vnet_buffer (b[2])->feature_arc_index = arc; + b[2]->current_config_index = config_index; + vnet_buffer (b[3])->feature_arc_index = arc; + b[3]->current_config_index = config_index; + } } - else if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) + + if (processing_level >= 1 && (or_flags & VNET_BUFFER_F_OFFLOAD)) { - uh->checksum = 0; - uh->checksum = - ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus); + vnet_interface_output_handle_offload (vm, b[0]); + vnet_interface_output_handle_offload (vm, b[1]); + vnet_interface_output_handle_offload (vm, b[2]); + vnet_interface_output_handle_offload (vm, b[3]); } + + n_left -= 4; + b += 4; } - b->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM; - b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM; - b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM; -} -static_always_inline u16 -tso_alloc_tx_bufs (vlib_main_t * vm, - vnet_interface_per_thread_data_t * ptd, - vlib_buffer_t * b0, u16 l4_hdr_sz) -{ - u32 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0); - u16 gso_size = vnet_buffer2 (b0)->gso_size; - u16 l234_sz = vnet_buffer (b0)->l4_hdr_offset + l4_hdr_sz; - /* rounded-up division */ - u16 n_bufs = (n_bytes_b0 - l234_sz + (gso_size - 1)) / gso_size; - u16 n_alloc; - - ASSERT (n_bufs > 0); - vec_validate (ptd->split_buffers, n_bufs - 1); - - n_alloc = vlib_buffer_alloc (vm, ptd->split_buffers, n_bufs); - if (n_alloc < n_bufs) + while (n_left) { - vlib_buffer_free (vm, ptd->split_buffers, n_alloc); - return 0; - } - return 1; -} + /* Be grumpy about zero length buffers for benefit of + driver tx function. */ + ASSERT (b[0]->current_length > 0); -static_always_inline void -tso_init_buf_from_template_base (vlib_buffer_t * nb0, vlib_buffer_t * b0, - u32 flags, u16 length) -{ - nb0->current_data = 0; - nb0->total_length_not_including_first_buffer = 0; - nb0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID | flags; - clib_memcpy_fast (&nb0->opaque, &b0->opaque, sizeof (nb0->opaque)); - clib_memcpy_fast (nb0->data, b0->data, length); - nb0->current_length = length; -} + n_bytes += n_bytes0 = vlib_buffer_length_in_chain (vm, b[0]); -static_always_inline void -tso_init_buf_from_template (vlib_main_t * vm, vlib_buffer_t * nb0, - vlib_buffer_t * b0, u16 template_data_sz, - u16 gso_size, u8 ** p_dst_ptr, u16 * p_dst_left, - u32 next_tcp_seq, u32 flags) -{ - tso_init_buf_from_template_base (nb0, b0, flags, template_data_sz); + if (processing_level >= 3) + { + p[0] = vlib_buffer_get_current (b[0]); + p += 1; + } - *p_dst_left = - clib_min (gso_size, - vlib_buffer_get_default_data_size (vm) - template_data_sz); - *p_dst_ptr = nb0->data + template_data_sz; + if (processing_level >= 2) + { + u32 tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; - tcp_header_t *tcp = - (tcp_header_t *) (nb0->data + vnet_buffer (nb0)->l4_hdr_offset); - tcp->seq_number = clib_host_to_net_u32 (next_tcp_seq); -} + if (PREDICT_FALSE (config_index != ~0)) + { + vnet_buffer (b[0])->feature_arc_index = arc; + b[0]->current_config_index = config_index; + } -static_always_inline void -tso_fixup_segmented_buf (vlib_buffer_t * b0, u8 tcp_flags, int is_ip6) -{ - u16 l3_hdr_offset = vnet_buffer (b0)->l3_hdr_offset; - u16 l4_hdr_offset = vnet_buffer (b0)->l4_hdr_offset; - ip4_header_t *ip4 = (ip4_header_t *) (b0->data + l3_hdr_offset); - ip6_header_t *ip6 = (ip6_header_t *) (b0->data + l3_hdr_offset); - tcp_header_t *tcp = (tcp_header_t *) (b0->data + l4_hdr_offset); - - tcp->flags = tcp_flags; - - if (is_ip6) - ip6->payload_length = - clib_host_to_net_u16 (b0->current_length - - vnet_buffer (b0)->l4_hdr_offset); - else - ip4->length = - clib_host_to_net_u16 (b0->current_length - - vnet_buffer (b0)->l3_hdr_offset); -} + if (PREDICT_FALSE (tx_swif0 != sw_if_index)) + vlib_increment_combined_counter (ccm, ti, tx_swif0, 1, n_bytes0); + } -/** - * Allocate the necessary number of ptd->split_buffers, - * and segment the possibly chained buffer(s) from b0 into - * there. - * - * Return the cumulative number of bytes sent or zero - * if allocation failed. - */ + if (processing_level >= 1) + vnet_interface_output_handle_offload (vm, b[0]); -static_always_inline u32 -tso_segment_buffer (vlib_main_t * vm, vnet_interface_per_thread_data_t * ptd, - int do_tx_offloads, u32 sbi0, vlib_buffer_t * sb0, - u32 n_bytes_b0) + n_left -= 1; + b += 1; + } + + return n_bytes; +} + +static_always_inline void +vnet_interface_pcap_tx_trace (vlib_main_t *vm, vlib_node_runtime_t *node, + vlib_frame_t *frame, int in_interface_ouput) { - u32 n_tx_bytes = 0; - int is_ip4 = sb0->flags & VNET_BUFFER_F_IS_IP4; - int is_ip6 = sb0->flags & VNET_BUFFER_F_IS_IP6; - ASSERT (is_ip4 || is_ip6); - ASSERT (sb0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID); - ASSERT (sb0->flags & VNET_BUFFER_F_L3_HDR_OFFSET_VALID); - ASSERT (sb0->flags & VNET_BUFFER_F_L4_HDR_OFFSET_VALID); - u16 gso_size = vnet_buffer2 (sb0)->gso_size; - - int l4_hdr_sz = vnet_buffer2 (sb0)->gso_l4_hdr_sz; - u8 save_tcp_flags = 0; - u8 tcp_flags_no_fin_psh = 0; - u32 next_tcp_seq = 0; - - tcp_header_t *tcp = - (tcp_header_t *) (sb0->data + vnet_buffer (sb0)->l4_hdr_offset); - next_tcp_seq = clib_net_to_host_u32 (tcp->seq_number); - /* store original flags for last packet and reset FIN and PSH */ - save_tcp_flags = tcp->flags; - tcp_flags_no_fin_psh = tcp->flags & ~(TCP_FLAG_FIN | TCP_FLAG_PSH); - tcp->checksum = 0; - - u32 default_bflags = - sb0->flags & ~(VNET_BUFFER_F_GSO | VLIB_BUFFER_NEXT_PRESENT); - u16 l234_sz = vnet_buffer (sb0)->l4_hdr_offset + l4_hdr_sz; - int first_data_size = clib_min (gso_size, sb0->current_length - l234_sz); - next_tcp_seq += first_data_size; - - if (PREDICT_FALSE (!tso_alloc_tx_bufs (vm, ptd, sb0, l4_hdr_sz))) - return 0; + vnet_main_t *vnm = vnet_get_main (); + u32 n_left_from, *from; + u32 sw_if_index = ~0, hw_if_index = ~0; + vnet_pcap_t *pp = &vnm->pcap; - vlib_buffer_t *b0 = vlib_get_buffer (vm, ptd->split_buffers[0]); - tso_init_buf_from_template_base (b0, sb0, default_bflags, - l234_sz + first_data_size); + if (PREDICT_TRUE (pp->pcap_tx_enable == 0)) + return; - u32 total_src_left = n_bytes_b0 - l234_sz - first_data_size; - if (total_src_left) + if (in_interface_ouput) { - /* Need to copy more segments */ - u8 *src_ptr, *dst_ptr; - u16 src_left, dst_left; - /* current source buffer */ - vlib_buffer_t *csb0 = sb0; - u32 csbi0 = sbi0; - /* current dest buffer */ - vlib_buffer_t *cdb0; - u16 dbi = 1; /* the buffer [0] is b0 */ - - src_ptr = sb0->data + l234_sz + first_data_size; - src_left = sb0->current_length - l234_sz - first_data_size; - b0->current_length = l234_sz + first_data_size; - - tso_fixup_segmented_buf (b0, tcp_flags_no_fin_psh, is_ip6); - if (do_tx_offloads) - calc_checksums (vm, b0); - - /* grab a second buffer and prepare the loop */ - ASSERT (dbi < vec_len (ptd->split_buffers)); - cdb0 = vlib_get_buffer (vm, ptd->split_buffers[dbi++]); - tso_init_buf_from_template (vm, cdb0, b0, l234_sz, gso_size, &dst_ptr, - &dst_left, next_tcp_seq, default_bflags); - - /* an arbitrary large number to catch the runaway loops */ - int nloops = 2000; - while (total_src_left) - { - if (nloops-- <= 0) - clib_panic ("infinite loop detected"); - u16 bytes_to_copy = clib_min (src_left, dst_left); - - clib_memcpy_fast (dst_ptr, src_ptr, bytes_to_copy); + /* interface-output is called right before interface-output-template. + * We only want to capture packets here if there is a per-interface + * filter, in case it matches the sub-interface sw_if_index. + * If there is no per-interface filter configured, let the + * interface-output-template node deal with it */ + if (pp->pcap_sw_if_index == 0) + return; + } + else + { + vnet_interface_output_runtime_t *rt = (void *) node->runtime_data; + sw_if_index = rt->sw_if_index; + } - src_left -= bytes_to_copy; - src_ptr += bytes_to_copy; - total_src_left -= bytes_to_copy; - dst_left -= bytes_to_copy; - dst_ptr += bytes_to_copy; - next_tcp_seq += bytes_to_copy; - cdb0->current_length += bytes_to_copy; + n_left_from = frame->n_vectors; + from = vlib_frame_vector_args (frame); - if (0 == src_left) - { - int has_next = (csb0->flags & VLIB_BUFFER_NEXT_PRESENT); - u32 next_bi = csb0->next_buffer; + while (n_left_from > 0) + { + u32 bi0 = from[0]; + vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0); + from++; + n_left_from--; - /* init src to the next buffer in chain */ - if (has_next) - { - csbi0 = next_bi; - csb0 = vlib_get_buffer (vm, csbi0); - src_left = csb0->current_length; - src_ptr = vlib_buffer_get_current (csb0); - } - else - { - ASSERT (total_src_left == 0); - break; - } - } - if (0 == dst_left && total_src_left) + if (in_interface_ouput) + { + const u32 sii = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + if (PREDICT_FALSE (sii != sw_if_index)) { - if (do_tx_offloads) - calc_checksums (vm, cdb0); - n_tx_bytes += cdb0->current_length; - ASSERT (dbi < vec_len (ptd->split_buffers)); - cdb0 = vlib_get_buffer (vm, ptd->split_buffers[dbi++]); - tso_init_buf_from_template (vm, cdb0, b0, l234_sz, - gso_size, &dst_ptr, &dst_left, - next_tcp_seq, default_bflags); + const vnet_hw_interface_t *hi = + vnet_get_sup_hw_interface (vnm, sii); + hw_if_index = hi->sw_if_index; + sw_if_index = sii; } + if (hw_if_index == sw_if_index) + continue; /* defer to interface-output-template */ } - tso_fixup_segmented_buf (cdb0, save_tcp_flags, is_ip6); - if (do_tx_offloads) - calc_checksums (vm, cdb0); - - n_tx_bytes += cdb0->current_length; + if (vnet_is_packet_pcaped (pp, b0, sw_if_index)) + pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt); } - n_tx_bytes += b0->current_length; - return n_tx_bytes; } static_always_inline void -drop_one_buffer_and_count (vlib_main_t * vm, vnet_main_t * vnm, - vlib_node_runtime_t * node, u32 * pbi0, - u32 drop_error_code) +hash_func_with_mask (void **p, u32 *hash, u32 n_packets, u32 *lookup_table, + u32 mask, vnet_hash_fn_t hf) { - u32 thread_index = vm->thread_index; - vnet_interface_output_runtime_t *rt = (void *) node->runtime_data; - - vlib_simple_counter_main_t *cm; - cm = - vec_elt_at_index (vnm->interface_main.sw_if_counters, - VNET_INTERFACE_COUNTER_TX_ERROR); - vlib_increment_simple_counter (cm, thread_index, rt->sw_if_index, 1); - - vlib_error_drop_buffers (vm, node, pbi0, - /* buffer stride */ 1, - /* n_buffers */ 1, - VNET_INTERFACE_OUTPUT_NEXT_DROP, - node->node_index, drop_error_code); -} + u32 n_left_from = n_packets; -static_always_inline uword -vnet_interface_output_node_inline_gso (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, - vnet_main_t * vnm, - vnet_hw_interface_t * hi, - int do_tx_offloads, - int do_segmentation) -{ - vnet_interface_output_runtime_t *rt = (void *) node->runtime_data; - vnet_sw_interface_t *si; - u32 n_left_to_tx, *from, *from_end, *to_tx; - u32 n_bytes, n_buffers, n_packets; - u32 n_bytes_b0, n_bytes_b1, n_bytes_b2, n_bytes_b3; - u32 thread_index = vm->thread_index; - vnet_interface_main_t *im = &vnm->interface_main; - u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX; - u32 current_config_index = ~0; - u8 arc = im->output_feature_arc_index; - vnet_interface_per_thread_data_t *ptd = - vec_elt_at_index (im->per_thread_data, thread_index); - vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; + hf (p, hash, n_packets); - n_buffers = frame->n_vectors; + clib_array_mask_u32 (hash, mask, n_packets); - if (node->flags & VLIB_NODE_FLAG_TRACE) - vnet_interface_output_trace (vm, node, frame, n_buffers); + while (n_left_from >= 4) + { + hash[0] = lookup_table[hash[0]]; + hash[1] = lookup_table[hash[1]]; + hash[2] = lookup_table[hash[2]]; + hash[3] = lookup_table[hash[3]]; - from = vlib_frame_vector_args (frame); - vlib_get_buffers (vm, from, b, n_buffers); + hash += 4; + n_left_from -= 4; + } - if (rt->is_deleted) - return vlib_error_drop_buffers (vm, node, from, - /* buffer stride */ 1, - n_buffers, - VNET_INTERFACE_OUTPUT_NEXT_DROP, - node->node_index, - VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED); - - si = vnet_get_sw_interface (vnm, rt->sw_if_index); - hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index); - if (!(si->flags & (VNET_SW_INTERFACE_FLAG_ADMIN_UP | - VNET_SW_INTERFACE_FLAG_BOND_SLAVE)) || - !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP)) + while (n_left_from > 0) { - vlib_simple_counter_main_t *cm; + hash[0] = lookup_table[hash[0]]; - cm = vec_elt_at_index (vnm->interface_main.sw_if_counters, - VNET_INTERFACE_COUNTER_TX_ERROR); - vlib_increment_simple_counter (cm, thread_index, - rt->sw_if_index, n_buffers); - - return vlib_error_drop_buffers (vm, node, from, - /* buffer stride */ 1, - n_buffers, - VNET_INTERFACE_OUTPUT_NEXT_DROP, - node->node_index, - VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN); + hash += 1; + n_left_from -= 1; } +} - from_end = from + n_buffers; - - /* Total byte count of all buffers. */ - n_bytes = 0; - n_packets = 0; +static_always_inline void +store_tx_frame_scalar_data (vnet_hw_if_tx_frame_t *copy_frame, + vnet_hw_if_tx_frame_t *tf) +{ + if (copy_frame) + clib_memcpy_fast (tf, copy_frame, sizeof (vnet_hw_if_tx_frame_t)); +} - /* interface-output feature arc handling */ - if (PREDICT_FALSE (vnet_have_features (arc, rt->sw_if_index))) +static_always_inline u32 +enqueue_one_to_tx_node (vlib_main_t *vm, vlib_node_runtime_t *node, u32 *ppqi, + u32 *from, vnet_hw_if_tx_frame_t *copy_frame, + u32 n_vectors, u32 n_left, u32 next_index) +{ + u32 tmp[VLIB_FRAME_SIZE]; + vlib_frame_bitmap_t mask = {}; + vlib_frame_t *f; + vnet_hw_if_tx_frame_t *tf; + u32 *to; + u32 n_copy = 0, n_free = 0; + + f = vlib_get_next_frame_internal (vm, node, next_index, 0); + tf = vlib_frame_scalar_args (f); + + if (f->n_vectors > 0 && + (!copy_frame || (tf->queue_id == copy_frame->queue_id))) { - vnet_feature_config_main_t *fcm; - fcm = vnet_feature_get_config_main (arc); - current_config_index = vnet_get_feature_config_index (arc, - rt->sw_if_index); - vnet_get_config_data (&fcm->config_main, ¤t_config_index, - &next_index, 0); + /* append current next frame */ + n_free = VLIB_FRAME_SIZE - f->n_vectors; + /* + * if frame contains enough space for worst case scenario, + * we can avoid use of tmp + */ + if (n_free >= n_left) + to = (u32 *) vlib_frame_vector_args (f) + f->n_vectors; + else + to = tmp; } - - while (from < from_end) + else { - /* Get new next frame since previous incomplete frame may have less - than VNET_FRAME_SIZE vectors in it. */ - vlib_get_new_next_frame (vm, node, next_index, to_tx, n_left_to_tx); - - while (from + 8 <= from_end && n_left_to_tx >= 4) + if (f->n_vectors > 0) { - u32 bi0, bi1, bi2, bi3; - u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3; - u32 or_flags; - - /* Prefetch next iteration. */ - vlib_prefetch_buffer_header (b[4], LOAD); - vlib_prefetch_buffer_header (b[5], LOAD); - vlib_prefetch_buffer_header (b[6], LOAD); - vlib_prefetch_buffer_header (b[7], LOAD); - - bi0 = from[0]; - bi1 = from[1]; - bi2 = from[2]; - bi3 = from[3]; - to_tx[0] = bi0; - to_tx[1] = bi1; - to_tx[2] = bi2; - to_tx[3] = bi3; - - or_flags = b[0]->flags | b[1]->flags | b[2]->flags | b[3]->flags; - - if (do_segmentation) - { - /* go to single loop if we need TSO segmentation */ - if (PREDICT_FALSE (or_flags & VNET_BUFFER_F_GSO)) - break; - } - from += 4; - to_tx += 4; - n_left_to_tx -= 4; - - /* Be grumpy about zero length buffers for benefit of - driver tx function. */ - ASSERT (b[0]->current_length > 0); - ASSERT (b[1]->current_length > 0); - ASSERT (b[2]->current_length > 0); - ASSERT (b[3]->current_length > 0); - - n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]); - n_bytes_b1 = vlib_buffer_length_in_chain (vm, b[1]); - n_bytes_b2 = vlib_buffer_length_in_chain (vm, b[2]); - n_bytes_b3 = vlib_buffer_length_in_chain (vm, b[3]); - tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; - tx_swif1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX]; - tx_swif2 = vnet_buffer (b[2])->sw_if_index[VLIB_TX]; - tx_swif3 = vnet_buffer (b[3])->sw_if_index[VLIB_TX]; - - n_bytes += n_bytes_b0 + n_bytes_b1; - n_bytes += n_bytes_b2 + n_bytes_b3; - n_packets += 4; + /* current frame doesn't fit - grab empty one */ + f = vlib_get_next_frame_internal (vm, node, next_index, 1); + tf = vlib_frame_scalar_args (f); + } - if (PREDICT_FALSE (current_config_index != ~0)) - { - vnet_buffer (b[0])->feature_arc_index = arc; - vnet_buffer (b[1])->feature_arc_index = arc; - vnet_buffer (b[2])->feature_arc_index = arc; - vnet_buffer (b[3])->feature_arc_index = arc; - b[0]->current_config_index = current_config_index; - b[1]->current_config_index = current_config_index; - b[2]->current_config_index = current_config_index; - b[3]->current_config_index = current_config_index; - } + /* empty frame - store scalar data */ + store_tx_frame_scalar_data (copy_frame, tf); + to = vlib_frame_vector_args (f); + n_free = VLIB_FRAME_SIZE; + } - /* update vlan subif tx counts, if required */ - if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index)) - { - vlib_increment_combined_counter (im->combined_sw_if_counters + - VNET_INTERFACE_COUNTER_TX, - thread_index, tx_swif0, 1, - n_bytes_b0); - } + /* + * per packet queue id array + * compare with given queue_id, if match, copy respective buffer index from + * -> to + */ + if (ppqi) + { + clib_mask_compare_u32 (copy_frame->queue_id, ppqi, mask, n_vectors); + n_copy = clib_compress_u32 (to, from, mask, n_vectors); - if (PREDICT_FALSE (tx_swif1 != rt->sw_if_index)) - { + if (n_copy == 0) + return n_left; + } + else + { + /* + * no work required, just copy all buffer indices from -> to + */ + n_copy = n_left; + vlib_buffer_copy_indices (to, from, n_copy); + } - vlib_increment_combined_counter (im->combined_sw_if_counters + - VNET_INTERFACE_COUNTER_TX, - thread_index, tx_swif1, 1, - n_bytes_b1); - } + if (to != tmp) + { + /* indices already written to frame, just close it */ + vlib_put_next_frame (vm, node, next_index, n_free - n_copy); + } + else if (n_free >= n_copy) + { + /* enough space in the existing frame */ + to = (u32 *) vlib_frame_vector_args (f) + f->n_vectors; + vlib_buffer_copy_indices (to, tmp, n_copy); + vlib_put_next_frame (vm, node, next_index, n_free - n_copy); + } + else + { + /* full frame */ + to = (u32 *) vlib_frame_vector_args (f) + f->n_vectors; + vlib_buffer_copy_indices (to, tmp, n_free); + vlib_put_next_frame (vm, node, next_index, 0); + + /* second frame */ + u32 n_2nd_frame = n_copy - n_free; + f = vlib_get_next_frame_internal (vm, node, next_index, 1); + tf = vlib_frame_scalar_args (f); + /* empty frame - store scalar data */ + store_tx_frame_scalar_data (copy_frame, tf); + to = vlib_frame_vector_args (f); + vlib_buffer_copy_indices (to, tmp + n_free, n_2nd_frame); + vlib_put_next_frame (vm, node, next_index, + VLIB_FRAME_SIZE - n_2nd_frame); + } - if (PREDICT_FALSE (tx_swif2 != rt->sw_if_index)) - { + return n_left - n_copy; +} - vlib_increment_combined_counter (im->combined_sw_if_counters + - VNET_INTERFACE_COUNTER_TX, - thread_index, tx_swif2, 1, - n_bytes_b2); - } - if (PREDICT_FALSE (tx_swif3 != rt->sw_if_index)) - { +static_always_inline void +enqueue_to_tx_node (vlib_main_t *vm, vlib_node_runtime_t *node, + vnet_hw_interface_t *hi, u32 next_index, + vnet_hw_if_output_node_runtime_t *r, u32 *from, void **p, + u32 n_vectors) +{ + u32 n_left = n_vectors; - vlib_increment_combined_counter (im->combined_sw_if_counters + - VNET_INTERFACE_COUNTER_TX, - thread_index, tx_swif3, 1, - n_bytes_b3); - } + ASSERT (n_vectors <= VLIB_FRAME_SIZE); - if (do_tx_offloads) - { - if (or_flags & - (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM | - VNET_BUFFER_F_OFFLOAD_UDP_CKSUM | - VNET_BUFFER_F_OFFLOAD_IP_CKSUM)) - { - calc_checksums (vm, b[0]); - calc_checksums (vm, b[1]); - calc_checksums (vm, b[2]); - calc_checksums (vm, b[3]); - } - } - b += 4; + /* + * backward compatible for drivers not integrated with new tx infra. + */ + if (r == 0) + { + n_left = enqueue_one_to_tx_node (vm, node, NULL, from, NULL, n_vectors, + n_left, next_index); + } + /* + * only 1 tx queue of given interface is available on given thread + */ + else if (r->n_queues == 1) + { + n_left = enqueue_one_to_tx_node (vm, node, NULL, from, r->frame, + n_vectors, n_left, next_index); + } + /* + * multi tx-queues use case + */ + else if (r->n_queues > 1) + { + u32 qids[VLIB_FRAME_SIZE]; - } + hash_func_with_mask (p, qids, n_vectors, r->lookup_table, + vec_len (r->lookup_table) - 1, hi->hf); - while (from + 1 <= from_end && n_left_to_tx >= 1) + for (u32 i = 0; i < r->n_queues; i++) { - u32 bi0; - u32 tx_swif0; + n_left = enqueue_one_to_tx_node (vm, node, qids, from, &r->frame[i], + n_vectors, n_left, next_index); + if (n_left == 0) + break; + } + } + else + ASSERT (0); +} - bi0 = from[0]; - to_tx[0] = bi0; - from += 1; - to_tx += 1; - n_left_to_tx -= 1; +VLIB_NODE_FN (vnet_interface_output_node) +(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame) +{ + vnet_main_t *vnm = vnet_get_main (); + vnet_interface_main_t *im = &vnm->interface_main; + vlib_combined_counter_main_t *ccm; + vnet_hw_interface_t *hi; + vnet_sw_interface_t *si; + vnet_interface_output_runtime_t *rt = (void *) node->runtime_data; + vnet_hw_if_output_node_runtime_t *r = 0; + vlib_buffer_t *bufs[VLIB_FRAME_SIZE]; + u32 n_bytes, n_buffers = frame->n_vectors; + u32 config_index = ~0; + u32 sw_if_index = rt->sw_if_index; + u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX; + u32 ti = vm->thread_index; + u8 arc = im->output_feature_arc_index; + int arc_or_subif = 0; + int do_tx_offloads = 0; + void *ptr[VLIB_FRAME_SIZE], **p = ptr; + u8 is_parr = 0; + u32 *from; - /* Be grumpy about zero length buffers for benefit of - driver tx function. */ - ASSERT (b[0]->current_length > 0); + if (node->flags & VLIB_NODE_FLAG_TRACE) + vnet_interface_output_trace (vm, node, frame, n_buffers); - n_bytes_b0 = vlib_buffer_length_in_chain (vm, b[0]); - tx_swif0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; - n_bytes += n_bytes_b0; - n_packets += 1; + from = vlib_frame_vector_args (frame); - if (PREDICT_FALSE (current_config_index != ~0)) - { - vnet_buffer (b[0])->feature_arc_index = arc; - b[0]->current_config_index = current_config_index; - } + if (rt->is_deleted) + return vlib_error_drop_buffers ( + vm, node, from, + /* buffer stride */ 1, n_buffers, VNET_INTERFACE_OUTPUT_NEXT_DROP, + node->node_index, VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED); - if (do_segmentation) - { - if (PREDICT_FALSE (b[0]->flags & VNET_BUFFER_F_GSO)) - { - /* - * Undo the enqueue of the b0 - it is not going anywhere, - * and will be freed either after it's segmented or - * when dropped, if there is no buffers to segment into. - */ - to_tx -= 1; - n_left_to_tx += 1; - /* undo the counting. */ - n_bytes -= n_bytes_b0; - n_packets -= 1; - - u32 n_tx_bytes = 0; - - n_tx_bytes = - tso_segment_buffer (vm, ptd, do_tx_offloads, bi0, b[0], - n_bytes_b0); - - if (PREDICT_FALSE (n_tx_bytes == 0)) - { - drop_one_buffer_and_count (vm, vnm, node, from - 1, - VNET_INTERFACE_OUTPUT_ERROR_NO_BUFFERS_FOR_GSO); - b += 1; - continue; - } - - u16 n_tx_bufs = vec_len (ptd->split_buffers); - u32 *from_tx_seg = ptd->split_buffers; - - while (n_tx_bufs > 0) - { - if (n_tx_bufs >= n_left_to_tx) - { - while (n_left_to_tx > 0) - { - to_tx[0] = from_tx_seg[0]; - to_tx += 1; - from_tx_seg += 1; - n_left_to_tx -= 1; - n_tx_bufs -= 1; - n_packets += 1; - } - vlib_put_next_frame (vm, node, next_index, - n_left_to_tx); - vlib_get_new_next_frame (vm, node, next_index, - to_tx, n_left_to_tx); - } - while (n_tx_bufs > 0) - { - to_tx[0] = from_tx_seg[0]; - to_tx += 1; - from_tx_seg += 1; - n_left_to_tx -= 1; - n_tx_bufs -= 1; - n_packets += 1; - } - } - n_bytes += n_tx_bytes; - if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index)) - { - - vlib_increment_combined_counter - (im->combined_sw_if_counters + - VNET_INTERFACE_COUNTER_TX, thread_index, tx_swif0, - _vec_len (ptd->split_buffers), n_tx_bytes); - } - /* The buffers were enqueued. Reset the length */ - _vec_len (ptd->split_buffers) = 0; - /* Free the now segmented buffer */ - vlib_buffer_free_one (vm, bi0); - b += 1; - continue; - } - } + vnet_interface_pcap_tx_trace (vm, node, frame, 0 /* in_interface_ouput */); - if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index)) - { + vlib_get_buffers (vm, from, bufs, n_buffers); - vlib_increment_combined_counter (im->combined_sw_if_counters + - VNET_INTERFACE_COUNTER_TX, - thread_index, tx_swif0, 1, - n_bytes_b0); - } + si = vnet_get_sw_interface (vnm, sw_if_index); + hi = vnet_get_sup_hw_interface (vnm, sw_if_index); - if (do_tx_offloads) - calc_checksums (vm, b[0]); + if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) || + !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP)) + { + vlib_simple_counter_main_t *cm; - b += 1; - } + cm = vec_elt_at_index (vnm->interface_main.sw_if_counters, + VNET_INTERFACE_COUNTER_TX_ERROR); + vlib_increment_simple_counter (cm, ti, sw_if_index, n_buffers); - vlib_put_next_frame (vm, node, next_index, n_left_to_tx); + return vlib_error_drop_buffers ( + vm, node, from, + /* buffer stride */ 1, n_buffers, VNET_INTERFACE_OUTPUT_NEXT_DROP, + node->node_index, VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN); } - /* Update main interface stats. */ - vlib_increment_combined_counter (im->combined_sw_if_counters - + VNET_INTERFACE_COUNTER_TX, - thread_index, - rt->sw_if_index, n_packets, n_bytes); - return n_buffers; -} -#endif /* CLIB_MARCH_VARIANT */ + if (hi->output_node_thread_runtimes) + r = vec_elt_at_index (hi->output_node_thread_runtimes, vm->thread_index); -static_always_inline void vnet_interface_pcap_tx_trace - (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, - int sw_if_index_from_buffer) -{ - u32 n_left_from, *from; - u32 sw_if_index; - - if (PREDICT_TRUE (vlib_global_main.pcap[VLIB_TX].pcap_enable == 0)) - return; + if (r) + { + /* + * tx queue of given interface is not available on given thread + */ + if (r->n_queues == 0) + return vlib_error_drop_buffers ( + vm, node, from, + /* buffer stride */ 1, n_buffers, VNET_INTERFACE_OUTPUT_NEXT_DROP, + node->node_index, VNET_INTERFACE_OUTPUT_ERROR_NO_TX_QUEUE); + /* + * multiple tx queues available on given thread + */ + else if (r->n_queues > 1) + /* construct array of pointer */ + is_parr = 1; + } - if (sw_if_index_from_buffer == 0) + /* interface-output feature arc handling */ + if (PREDICT_FALSE (vnet_have_features (arc, sw_if_index))) { - vnet_interface_output_runtime_t *rt = (void *) node->runtime_data; - sw_if_index = rt->sw_if_index; + vnet_feature_config_main_t *fcm; + fcm = vnet_feature_get_config_main (arc); + config_index = vnet_get_feature_config_index (arc, sw_if_index); + vnet_get_config_data (&fcm->config_main, &config_index, &next_index, 0); + arc_or_subif = 1; } + else if (hash_elts (hi->sub_interface_sw_if_index_by_id)) + arc_or_subif = 1; + + ccm = im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX; + + /* if not all three flags IP4_,TCP_,UDP_CKSUM set, do compute them + * here before sending to the interface */ + if ((hi->caps & VNET_HW_IF_CAP_TX_CKSUM) != VNET_HW_IF_CAP_TX_CKSUM) + do_tx_offloads = 1; + + // basic processing + if (do_tx_offloads == 0 && arc_or_subif == 0 && is_parr == 0) + n_bytes = vnet_interface_output_node_inline ( + vm, sw_if_index, ccm, bufs, NULL, config_index, arc, n_buffers, 0); + // basic processing + tx offloads + else if (do_tx_offloads == 1 && arc_or_subif == 0 && is_parr == 0) + n_bytes = vnet_interface_output_node_inline ( + vm, sw_if_index, ccm, bufs, NULL, config_index, arc, n_buffers, 1); + // basic processing + tx offloads + vlans + arcs + else if (do_tx_offloads == 1 && arc_or_subif == 1 && is_parr == 0) + n_bytes = vnet_interface_output_node_inline ( + vm, sw_if_index, ccm, bufs, NULL, config_index, arc, n_buffers, 2); + // basic processing + tx offloads + vlans + arcs + multi-txqs else - sw_if_index = ~0; + n_bytes = vnet_interface_output_node_inline ( + vm, sw_if_index, ccm, bufs, p, config_index, arc, n_buffers, 3); - n_left_from = frame->n_vectors; from = vlib_frame_vector_args (frame); - - while (n_left_from > 0) + if (PREDICT_TRUE (next_index == VNET_INTERFACE_OUTPUT_NEXT_TX)) { - u32 bi0 = from[0]; - vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0); - - if (sw_if_index_from_buffer) - sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX]; - - if (vlib_global_main.pcap[VLIB_TX].pcap_sw_if_index == 0 || - vlib_global_main.pcap[VLIB_TX].pcap_sw_if_index == sw_if_index) - pcap_add_buffer (&vlib_global_main.pcap[VLIB_TX].pcap_main, vm, bi0, - 512); - from++; - n_left_from--; + enqueue_to_tx_node (vm, node, hi, next_index, r, from, ptr, + frame->n_vectors); } -} - -#ifndef CLIB_MARCH_VARIANT -static_always_inline uword -vnet_interface_output_node_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, vnet_main_t * vnm, - vnet_hw_interface_t * hi, - int do_tx_offloads) -{ - /* - * The 3-headed "if" is here because we want to err on the side - * of not impacting the non-GSO performance - so for the more - * common case of no GSO interfaces we want to prevent the - * segmentation codepath from being there altogether. - */ - if (PREDICT_TRUE (vnm->interface_main.gso_interface_count == 0)) - return vnet_interface_output_node_inline_gso (vm, node, frame, vnm, hi, - do_tx_offloads, - /* do_segmentation */ 0); - else if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) - return vnet_interface_output_node_inline_gso (vm, node, frame, vnm, hi, - do_tx_offloads, - /* do_segmentation */ 0); else - return vnet_interface_output_node_inline_gso (vm, node, frame, vnm, hi, - do_tx_offloads, - /* do_segmentation */ 1); -} - -uword -vnet_interface_output_node (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - vnet_main_t *vnm = vnet_get_main (); - vnet_hw_interface_t *hi; - vnet_interface_output_runtime_t *rt = (void *) node->runtime_data; - hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index); - - vnet_interface_pcap_tx_trace (vm, node, frame, - 0 /* sw_if_index_from_buffer */ ); + { + vlib_buffer_enqueue_to_single_next (vm, node, from, next_index, + frame->n_vectors); + } - if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD) - return vnet_interface_output_node_inline (vm, node, frame, vnm, hi, - /* do_tx_offloads */ 0); - else - return vnet_interface_output_node_inline (vm, node, frame, vnm, hi, - /* do_tx_offloads */ 1); + /* Update main interface stats. */ + vlib_increment_combined_counter (ccm, ti, sw_if_index, n_buffers, n_bytes); + return n_buffers; } -#endif /* CLIB_MARCH_VARIANT */ + +VLIB_REGISTER_NODE (vnet_interface_output_node) = { + .name = "interface-output-template", + .vector_size = sizeof (u32), +}; /* Use buffer's sw_if_index[VNET_TX] to choose output interface. */ VLIB_NODE_FN (vnet_per_buffer_interface_output_node) (vlib_main_t * vm, @@ -889,8 +693,7 @@ VLIB_NODE_FN (vnet_per_buffer_interface_output_node) (vlib_main_t * vm, u32 n_left_to_next, *from, *to_next; u32 n_left_from, next_index; - vnet_interface_pcap_tx_trace (vm, node, frame, - 1 /* sw_if_index_from_buffer */ ); + vnet_interface_pcap_tx_trace (vm, node, frame, 1 /* in_interface_ouput */); n_left_from = frame->n_vectors; @@ -975,9 +778,13 @@ VLIB_NODE_FN (vnet_per_buffer_interface_output_node) (vlib_main_t * vm, typedef struct vnet_error_trace_t_ { u32 sw_if_index; + i8 details_valid; + u8 is_ip6; + u8 pad[2]; + u16 mactype; + ip46_address_t src, dst; } vnet_error_trace_t; - static u8 * format_vnet_error_trace (u8 * s, va_list * va) { @@ -985,9 +792,29 @@ format_vnet_error_trace (u8 * s, va_list * va) CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *); vnet_error_trace_t *t = va_arg (*va, vnet_error_trace_t *); - s = format (s, "rx:%U", format_vnet_sw_if_index_name, - vnet_get_main (), t->sw_if_index); - + /* Normal, non-catchup trace */ + if (t->details_valid == 0) + { + s = format (s, "rx:%U", format_vnet_sw_if_index_name, + vnet_get_main (), t->sw_if_index); + } + else if (t->details_valid == 1) + { + /* The trace capture code didn't understant the mactype */ + s = format (s, "mactype 0x%4x (not decoded)", t->mactype); + } + else if (t->details_valid == 2) + { + /* Dump the src/dst addresses */ + if (t->is_ip6 == 0) + s = format (s, "IP4: %U -> %U", + format_ip4_address, &t->src.ip4, + format_ip4_address, &t->dst.ip4); + else + s = format (s, "IP6: %U -> %U", + format_ip6_address, &t->src.ip6, + format_ip6_address, &t->dst.ip6); + } return s; } @@ -1018,13 +845,17 @@ interface_trace_buffers (vlib_main_t * vm, if (b0->flags & VLIB_BUFFER_IS_TRACED) { - t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); + t0 = vlib_add_trace (vm, node, b0, + STRUCT_OFFSET_OF (vnet_error_trace_t, pad)); t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + t0->details_valid = 0; } if (b1->flags & VLIB_BUFFER_IS_TRACED) { - t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0])); + t1 = vlib_add_trace (vm, node, b1, + STRUCT_OFFSET_OF (vnet_error_trace_t, pad)); t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX]; + t1->details_valid = 0; } buffers += 2; n_left -= 2; @@ -1042,8 +873,10 @@ interface_trace_buffers (vlib_main_t * vm, if (b0->flags & VLIB_BUFFER_IS_TRACED) { - t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); + t0 = vlib_add_trace (vm, node, b0, + STRUCT_OFFSET_OF (vnet_error_trace_t, pad)); t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + t0->details_valid = 0; } buffers += 1; n_left -= 1; @@ -1057,6 +890,56 @@ typedef enum VNET_ERROR_N_DISPOSITION, } vnet_error_disposition_t; +static void +drop_catchup_trace (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_buffer_t * b) +{ + /* Can we safely rewind the buffer? If not, fagedaboudit */ + if (b->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID) + { + vnet_error_trace_t *t; + ip4_header_t *ip4; + ip6_header_t *ip6; + ethernet_header_t *eh; + i16 delta; + + t = vlib_add_trace (vm, node, b, sizeof (*t)); + delta = vnet_buffer (b)->l2_hdr_offset - b->current_data; + vlib_buffer_advance (b, delta); + + eh = vlib_buffer_get_current (b); + /* Save mactype */ + t->mactype = clib_net_to_host_u16 (eh->type); + t->details_valid = 1; + switch (t->mactype) + { + case ETHERNET_TYPE_IP4: + ip4 = (void *) (eh + 1); + t->details_valid = 2; + t->is_ip6 = 0; + t->src.ip4.as_u32 = ip4->src_address.as_u32; + t->dst.ip4.as_u32 = ip4->dst_address.as_u32; + break; + + case ETHERNET_TYPE_IP6: + ip6 = (void *) (eh + 1); + t->details_valid = 2; + t->is_ip6 = 1; + clib_memcpy_fast (t->src.as_u8, ip6->src_address.as_u8, + sizeof (ip6_address_t)); + clib_memcpy_fast (t->dst.as_u8, ip6->dst_address.as_u8, + sizeof (ip6_address_t)); + break; + + default: + /* Dunno, do nothing, leave details_valid alone */ + break; + } + /* Restore current data (probably unnecessary) */ + vlib_buffer_advance (b, -delta); + } +} + static_always_inline uword interface_drop_punt (vlib_main_t * vm, vlib_node_runtime_t * node, @@ -1068,6 +951,7 @@ interface_drop_punt (vlib_main_t * vm, u32 sw_if_indices[VLIB_FRAME_SIZE]; vlib_simple_counter_main_t *cm; u16 nexts[VLIB_FRAME_SIZE]; + u32 n_trace; vnet_main_t *vnm; vnm = vnet_get_main (); @@ -1079,6 +963,41 @@ interface_drop_punt (vlib_main_t * vm, vlib_get_buffers (vm, from, bufs, n_left); + /* "trace add error-drop NNN?" */ + if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node)))) + { + /* If pkts aren't otherwise traced... */ + if ((node->flags & VLIB_NODE_FLAG_TRACE) == 0) + { + /* Trace them from here */ + node->flags |= VLIB_NODE_FLAG_TRACE; + while (n_trace && n_left) + { + if (PREDICT_TRUE + (vlib_trace_buffer (vm, node, 0 /* next_index */ , b[0], + 0 /* follow chain */ ))) + { + /* + * Here we have a wireshark dissector problem. + * Packets may be well-formed, or not. We + * must not blow chunks in any case. + * + * Try to produce trace records which will help + * folks understand what's going on. + */ + drop_catchup_trace (vm, node, b[0]); + n_trace--; + } + n_left--; + b++; + } + } + + vlib_set_trace_count (vm, node, n_trace); + b = bufs; + n_left = frame->n_vectors; + } + if (node->flags & VLIB_NODE_FLAG_TRACE) interface_trace_buffers (vm, node, frame); @@ -1151,7 +1070,8 @@ interface_drop_punt (vlib_main_t * vm, static inline void pcap_drop_trace (vlib_main_t * vm, - vnet_interface_main_t * im, vlib_frame_t * f) + vnet_interface_main_t * im, + vnet_pcap_t * pp, vlib_frame_t * f) { u32 *from; u32 n_left = f->n_vectors; @@ -1159,6 +1079,7 @@ pcap_drop_trace (vlib_main_t * vm, u32 bi0; i16 save_current_data; u16 save_current_length; + vlib_error_main_t *em = &vm->error_main; from = vlib_frame_vector_args (f); @@ -1180,24 +1101,86 @@ pcap_drop_trace (vlib_main_t * vm, && hash_get (im->pcap_drop_filter_hash, b0->error)) continue; + if (!vnet_is_packet_pcaped (pp, b0, ~0)) + continue; /* not matching, skip */ + /* Trace all drops, or drops received on a specific interface */ - if (im->pcap_sw_if_index == 0 || - im->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX]) + save_current_data = b0->current_data; + save_current_length = b0->current_length; + + /* + * Typically, we'll need to rewind the buffer + * if l2_hdr_offset is valid, make sure to rewind to the start of + * the L2 header. This may not be the buffer start in case we pop-ed + * vlan tags. + * Otherwise, rewind to buffer start and hope for the best. + */ + if (b0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID) { - save_current_data = b0->current_data; - save_current_length = b0->current_length; - - /* - * Typically, we'll need to rewind the buffer - */ - if (b0->current_data > 0) - vlib_buffer_advance (b0, (word) - b0->current_data); - - pcap_add_buffer (&im->pcap_main, vm, bi0, 512); - - b0->current_data = save_current_data; - b0->current_length = save_current_length; + if (b0->current_data > vnet_buffer (b0)->l2_hdr_offset) + vlib_buffer_advance (b0, vnet_buffer (b0)->l2_hdr_offset - + b0->current_data); + } + else if (b0->current_data > 0) + { + vlib_buffer_advance (b0, (word) -b0->current_data); } + + { + vlib_buffer_t *last = b0; + u32 error_node_index; + int drop_string_len; + vlib_node_t *n; + /* Length of the error string */ + int error_string_len = + clib_strnlen (em->counters_heap[b0->error].name, 128); + + /* Dig up the drop node */ + error_node_index = vm->node_main.node_by_error[b0->error]; + n = vlib_get_node (vm, error_node_index); + + /* Length of full drop string, w/ "nodename: " prepended */ + drop_string_len = error_string_len + vec_len (n->name) + 2; + + /* Find the last buffer in the chain */ + while (last->flags & VLIB_BUFFER_NEXT_PRESENT) + last = vlib_get_buffer (vm, last->next_buffer); + + /* + * Append : to the capture, + * only if we can do that without allocating a new buffer. + */ + if (PREDICT_TRUE ((last->current_data + last->current_length) < + (VLIB_BUFFER_DEFAULT_DATA_SIZE - drop_string_len))) + { + clib_memcpy_fast (last->data + last->current_data + + last->current_length, + n->name, vec_len (n->name)); + clib_memcpy_fast (last->data + last->current_data + + last->current_length + vec_len (n->name), + ": ", 2); + clib_memcpy_fast (last->data + last->current_data + + last->current_length + vec_len (n->name) + 2, + em->counters_heap[b0->error].name, + error_string_len); + last->current_length += drop_string_len; + b0->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID); + pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt); + last->current_length -= drop_string_len; + b0->current_data = save_current_data; + b0->current_length = save_current_length; + continue; + } + } + + /* + * Didn't have space in the last buffer, here's the dropped + * packet as-is + */ + pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt); + + b0->current_data = save_current_data; + b0->current_length = save_current_length; } } @@ -1221,10 +1204,12 @@ VLIB_NODE_FN (interface_drop) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { + vnet_main_t *vnm = vnet_get_main (); vnet_interface_main_t *im = &vnet_get_main ()->interface_main; + vnet_pcap_t *pp = &vnm->pcap; - if (PREDICT_FALSE (im->drop_pcap_enable)) - pcap_drop_trace (vm, im, frame); + if (PREDICT_FALSE (pp->pcap_drop_enable)) + pcap_drop_trace (vm, im, pp, frame); return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP); } @@ -1236,87 +1221,147 @@ VLIB_NODE_FN (interface_punt) (vlib_main_t * vm, return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT); } -/* *INDENT-OFF* */ VLIB_REGISTER_NODE (interface_drop) = { .name = "error-drop", .vector_size = sizeof (u32), .format_trace = format_vnet_error_trace, + .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED, .n_next_nodes = 1, .next_nodes = { [0] = "drop", }, }; -/* *INDENT-ON* */ -/* *INDENT-OFF* */ VLIB_REGISTER_NODE (interface_punt) = { .name = "error-punt", .vector_size = sizeof (u32), .format_trace = format_vnet_error_trace, + .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED, .n_next_nodes = 1, .next_nodes = { [0] = "punt", }, }; -/* *INDENT-ON* */ -/* *INDENT-OFF* */ VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node) = { .name = "interface-output", .vector_size = sizeof (u32), }; -/* *INDENT-ON* */ -static uword -interface_tx_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * from_frame) +VLIB_NODE_FN (vnet_interface_output_arc_end_node) +(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame) { vnet_main_t *vnm = vnet_get_main (); - u32 last_sw_if_index = ~0; - vlib_frame_t *to_frame = 0; - vnet_hw_interface_t *hw = 0; - u32 *from, *to_next = 0; - u32 n_left_from; - - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - while (n_left_from > 0) + vnet_interface_main_t *im = &vnm->interface_main; + vnet_hw_interface_t *hi; + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; + u32 sw_if_indices[VLIB_FRAME_SIZE], *sw_if_index = sw_if_indices; + vlib_frame_bitmap_t used_elts = {}, mask = {}; + u32 *tmp, *from, n_left, n_comp, n_p_comp, swif, off; + u16 next_index; + void *ptr[VLIB_FRAME_SIZE], **p = ptr; + + from = vlib_frame_vector_args (frame); + n_left = frame->n_vectors; + vlib_get_buffers (vm, from, bufs, n_left); + + while (n_left >= 8) { - u32 bi0; - vlib_buffer_t *b0; - u32 sw_if_index0; + vlib_prefetch_buffer_header (b[4], LOAD); + vlib_prefetch_buffer_header (b[5], LOAD); + vlib_prefetch_buffer_header (b[6], LOAD); + vlib_prefetch_buffer_header (b[7], LOAD); + + p[0] = vlib_buffer_get_current (b[0]); + p[1] = vlib_buffer_get_current (b[1]); + p[2] = vlib_buffer_get_current (b[2]); + p[3] = vlib_buffer_get_current (b[3]); + sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; + sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_TX]; + sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_TX]; + sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_TX]; + + p += 4; + b += 4; + sw_if_index += 4; + n_left -= 4; + } - bi0 = from[0]; - from++; - n_left_from--; - b0 = vlib_get_buffer (vm, bi0); - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + while (n_left) + { + p[0] = vlib_buffer_get_current (b[0]); + sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; + p++; + b++; + sw_if_index++; + n_left--; + } + + n_left = frame->n_vectors; + swif = sw_if_indices[0]; + off = 0; + + /* a bit ugly but it allows us to reuse stack space for temporary store + * which may also improve memory latency */ + tmp = (u32 *) bufs; + +more: + next_index = vec_elt (im->if_out_arc_end_next_index_by_sw_if_index, swif); + hi = vnet_get_sup_hw_interface (vnm, swif); + vnet_hw_if_output_node_runtime_t *r = 0; + void *ptr_tmp[VLIB_FRAME_SIZE], **p_tmp = ptr_tmp; - if (PREDICT_FALSE ((last_sw_if_index != sw_if_index0) || to_frame == 0)) + if (hi->output_node_thread_runtimes) + r = vec_elt_at_index (hi->output_node_thread_runtimes, vm->thread_index); + + /* compare and compress based on comparison mask */ + clib_mask_compare_u32 (swif, sw_if_indices, mask, frame->n_vectors); + n_comp = clib_compress_u32 (tmp, from, mask, frame->n_vectors); + + /* + * tx queue of given interface is not available on given thread + */ + if (r) + { + if (r->n_queues == 0) { - if (to_frame) - { - hw = vnet_get_sup_hw_interface (vnm, last_sw_if_index); - vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame); - } - last_sw_if_index = sw_if_index0; - hw = vnet_get_sup_hw_interface (vnm, sw_if_index0); - to_frame = vlib_get_frame_to_node (vm, hw->tx_node_index); - to_next = vlib_frame_vector_args (to_frame); + vlib_error_drop_buffers ( + vm, node, tmp, + /* buffer stride */ 1, n_comp, VNET_INTERFACE_OUTPUT_NEXT_DROP, + node->node_index, VNET_INTERFACE_OUTPUT_ERROR_NO_TX_QUEUE); + goto drop; } + else if (r->n_queues > 1) + { + n_p_comp = clib_compress_u64 ((u64 *) p_tmp, (u64 *) ptr, mask, + frame->n_vectors); + ASSERT (n_p_comp == n_comp); + } + } + + enqueue_to_tx_node (vm, node, hi, next_index, r, tmp, ptr_tmp, n_comp); + +drop: + n_left -= n_comp; + if (n_left) + { + /* store comparison mask so we can find next unused element */ + vlib_frame_bitmap_or (used_elts, mask); - to_next[0] = bi0; - to_next++; - to_frame->n_vectors++; + /* fine first unused sw_if_index by scanning trough used_elts bitmap */ + while (PREDICT_FALSE (used_elts[off] == ~0)) + off++; + + swif = + sw_if_indices[(off << 6) + count_trailing_zeros (~used_elts[off])]; + goto more; } - vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame); - return from_frame->n_vectors; + + return frame->n_vectors; } -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (interface_tx, static) = { - .function = interface_tx_node_fn, - .name = "interface-tx", +VLIB_REGISTER_NODE (vnet_interface_output_arc_end_node) = { + .name = "interface-output-arc-end", .vector_size = sizeof (u32), .n_next_nodes = 1, .next_nodes = { @@ -1324,32 +1369,30 @@ VLIB_REGISTER_NODE (interface_tx, static) = { }, }; -VNET_FEATURE_ARC_INIT (interface_output, static) = -{ - .arc_name = "interface-output", +VNET_FEATURE_ARC_INIT (interface_output, static) = { + .arc_name = "interface-output", .start_nodes = VNET_FEATURES (0), - .last_in_arc = "interface-tx", + .last_in_arc = "interface-output-arc-end", .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index, }; VNET_FEATURE_INIT (span_tx, static) = { .arc_name = "interface-output", .node_name = "span-output", - .runs_before = VNET_FEATURES ("interface-tx"), + .runs_before = VNET_FEATURES ("interface-output-arc-end"), }; VNET_FEATURE_INIT (ipsec_if_tx, static) = { .arc_name = "interface-output", .node_name = "ipsec-if-output", - .runs_before = VNET_FEATURES ("interface-tx"), + .runs_before = VNET_FEATURES ("interface-output-arc-end"), }; -VNET_FEATURE_INIT (interface_tx, static) = { +VNET_FEATURE_INIT (interface_output_arc_end, static) = { .arc_name = "interface-output", - .node_name = "interface-tx", + .node_name = "interface-output-arc-end", .runs_before = 0, }; -/* *INDENT-ON* */ #ifndef CLIB_MARCH_VARIANT clib_error_t * @@ -1387,140 +1430,6 @@ vnet_set_interface_output_node (vnet_main_t * vnm, } #endif /* CLIB_MARCH_VARIANT */ -static clib_error_t * -pcap_drop_trace_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) -{ - vnet_main_t *vnm = vnet_get_main (); - vnet_interface_main_t *im = &vnm->interface_main; - u8 *filename; - u32 max; - int matched = 0; - clib_error_t *error = 0; - - while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) - { - if (unformat (input, "on")) - { - if (im->drop_pcap_enable == 0) - { - if (im->pcap_filename == 0) - im->pcap_filename = format (0, "/tmp/drop.pcap%c", 0); - - clib_memset (&im->pcap_main, 0, sizeof (im->pcap_main)); - im->pcap_main.file_name = (char *) im->pcap_filename; - im->pcap_main.n_packets_to_capture = PCAP_DEF_PKT_TO_CAPTURE; - if (im->pcap_pkts_to_capture) - im->pcap_main.n_packets_to_capture = im->pcap_pkts_to_capture; - - im->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet; - im->drop_pcap_enable = 1; - matched = 1; - vlib_cli_output (vm, "pcap drop capture on..."); - } - else - { - vlib_cli_output (vm, "pcap drop capture already on..."); - } - matched = 1; - } - else if (unformat (input, "off")) - { - matched = 1; - - if (im->drop_pcap_enable) - { - vlib_cli_output (vm, "captured %d pkts...", - im->pcap_main.n_packets_captured); - if (im->pcap_main.n_packets_captured) - { - im->pcap_main.n_packets_to_capture = - im->pcap_main.n_packets_captured; - error = pcap_write (&im->pcap_main); - if (error) - clib_error_report (error); - else - vlib_cli_output (vm, "saved to %s...", im->pcap_filename); - } - } - else - { - vlib_cli_output (vm, "pcap drop capture already off..."); - } - - im->drop_pcap_enable = 0; - } - else if (unformat (input, "max %d", &max)) - { - im->pcap_pkts_to_capture = max; - matched = 1; - } - - else if (unformat (input, "intfc %U", - unformat_vnet_sw_interface, vnm, - &im->pcap_sw_if_index)) - matched = 1; - else if (unformat (input, "intfc any")) - { - im->pcap_sw_if_index = 0; - matched = 1; - } - else if (unformat (input, "file %s", &filename)) - { - u8 *chroot_filename; - /* Brain-police user path input */ - if (strstr ((char *) filename, "..") - || index ((char *) filename, '/')) - { - vlib_cli_output (vm, "illegal characters in filename '%s'", - filename); - continue; - } - - chroot_filename = format (0, "/tmp/%s%c", filename, 0); - vec_free (filename); - - if (im->pcap_filename) - vec_free (im->pcap_filename); - im->pcap_filename = chroot_filename; - im->pcap_main.file_name = (char *) im->pcap_filename; - matched = 1; - } - else if (unformat (input, "status")) - { - if (im->drop_pcap_enable == 0) - { - vlib_cli_output (vm, "pcap drop capture is off..."); - continue; - } - - vlib_cli_output (vm, "pcap drop capture: %d of %d pkts...", - im->pcap_main.n_packets_captured, - im->pcap_main.n_packets_to_capture); - matched = 1; - } - - else - break; - } - - if (matched == 0) - return clib_error_return (0, "unknown input `%U'", - format_unformat_error, input); - - return 0; -} - -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (pcap_trace_command, static) = { - .path = "pcap drop trace", - .short_help = - "pcap drop trace on off max intfc file status", - .function = pcap_drop_trace_command_fn, -}; -/* *INDENT-ON* */ - /* * fd.io coding-style-patch-verification: ON *