diff options
Diffstat (limited to 'src/vnet/ip')
| -rw-r--r-- | src/vnet/ip/ip4_forward.c | 571 | ||||
| -rw-r--r-- | src/vnet/ip/ip6_forward.c | 1 |
2 files changed, 319 insertions, 253 deletions
diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c index 04cfac0d6be..6d5f07bda2c 100644 --- a/src/vnet/ip/ip4_forward.c +++ b/src/vnet/ip/ip4_forward.c @@ -1143,8 +1143,9 @@ VNET_FEATURE_ARC_INIT (ip4_local) = /* *INDENT-ON* */ static inline void -ip4_local_validate_l4 (vlib_main_t * vm, vlib_buffer_t * p, ip4_header_t * ip, - u8 is_udp, u8 * error, u8 * good_tcp_udp) +ip4_local_l4_csum_validate (vlib_main_t * vm, vlib_buffer_t * p, + ip4_header_t * ip, u8 is_udp, u8 * error, + u8 * good_tcp_udp) { u32 flags0; flags0 = ip4_tcp_udp_validate_checksum (vm, p); @@ -1165,10 +1166,247 @@ ip4_local_validate_l4 (vlib_main_t * vm, vlib_buffer_t * p, ip4_header_t * ip, } } -#define ip4_local_do_l4_check(is_tcp_udp, flags) \ - (is_tcp_udp && !(flags & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED \ - || flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM \ - || flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)) +#define ip4_local_csum_is_offloaded(_b) \ + _b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM \ + || _b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM + +#define ip4_local_need_csum_check(is_tcp_udp, _b) \ + (is_tcp_udp && !(_b->flags & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED \ + || ip4_local_csum_is_offloaded (_b))) + +#define ip4_local_csum_is_valid(_b) \ + (_b->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT \ + || (ip4_local_csum_is_offloaded (_b))) != 0 + +static inline void +ip4_local_check_l4_csum (vlib_main_t * vm, vlib_buffer_t * b, + ip4_header_t * ih, u8 * error) +{ + u8 is_udp, is_tcp_udp, good_tcp_udp; + + is_udp = ih->protocol == IP_PROTOCOL_UDP; + is_tcp_udp = is_udp || ih->protocol == IP_PROTOCOL_TCP; + + if (PREDICT_FALSE (ip4_local_need_csum_check (is_tcp_udp, b))) + ip4_local_l4_csum_validate (vm, b, ih, is_udp, error, &good_tcp_udp); + else + good_tcp_udp = ip4_local_csum_is_valid (b); + + ASSERT (IP4_ERROR_TCP_CHECKSUM + 1 == IP4_ERROR_UDP_CHECKSUM); + *error = (is_tcp_udp && !good_tcp_udp + ? IP4_ERROR_TCP_CHECKSUM + is_udp : *error); +} + +static inline void +ip4_local_check_l4_csum_x2 (vlib_main_t * vm, vlib_buffer_t ** b, + ip4_header_t ** ih, u8 * error) +{ + u8 is_udp[2], is_tcp_udp[2], good_tcp_udp[2]; + + is_udp[0] = ih[0]->protocol == IP_PROTOCOL_UDP; + is_udp[1] = ih[1]->protocol == IP_PROTOCOL_UDP; + + is_tcp_udp[0] = is_udp[0] || ih[0]->protocol == IP_PROTOCOL_TCP; + is_tcp_udp[1] = is_udp[1] || ih[1]->protocol == IP_PROTOCOL_TCP; + + good_tcp_udp[0] = ip4_local_csum_is_valid (b[0]); + good_tcp_udp[1] = ip4_local_csum_is_valid (b[1]); + + if (PREDICT_FALSE (ip4_local_need_csum_check (is_tcp_udp[0], b[0]) + || ip4_local_need_csum_check (is_tcp_udp[1], b[1]))) + { + if (is_tcp_udp[0]) + ip4_local_l4_csum_validate (vm, b[0], ih[0], is_udp[0], &error[0], + &good_tcp_udp[0]); + if (is_tcp_udp[1]) + ip4_local_l4_csum_validate (vm, b[1], ih[1], is_udp[1], &error[1], + &good_tcp_udp[1]); + } + + error[0] = (is_tcp_udp[0] && !good_tcp_udp[0] ? + IP4_ERROR_TCP_CHECKSUM + is_udp[0] : error[0]); + error[1] = (is_tcp_udp[1] && !good_tcp_udp[1] ? + IP4_ERROR_TCP_CHECKSUM + is_udp[1] : error[1]); +} + +static inline void +ip4_local_set_next_and_error (vlib_node_runtime_t * error_node, + vlib_buffer_t * b, u16 * next, u8 error, + u8 head_of_feature_arc) +{ + u8 arc_index = vnet_feat_arc_ip4_local.feature_arc_index; + u32 next_index; + + *next = error != IP4_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : *next; + b->error = error ? error_node->errors[error] : 0; + if (head_of_feature_arc) + { + next_index = *next; + if (PREDICT_TRUE (error == (u8) IP4_ERROR_UNKNOWN_PROTOCOL)) + { + vnet_feature_arc_start (arc_index, + vnet_buffer (b)->sw_if_index[VLIB_RX], + &next_index, b); + *next = next_index; + } + } +} + +typedef struct +{ + ip4_address_t src; + u32 lbi; + u8 error; +} ip4_local_last_check_t; + +static inline void +ip4_local_check_src (vlib_buffer_t * b, ip4_header_t * ip0, + ip4_local_last_check_t * last_check, u8 * error0) +{ + ip4_fib_mtrie_leaf_t leaf0; + ip4_fib_mtrie_t *mtrie0; + const dpo_id_t *dpo0; + load_balance_t *lb0; + u32 lbi0; + + vnet_buffer (b)->ip.fib_index = + vnet_buffer (b)->sw_if_index[VLIB_TX] != ~0 ? + vnet_buffer (b)->sw_if_index[VLIB_TX] : vnet_buffer (b)->ip.fib_index; + + if (PREDICT_FALSE (last_check->src.as_u32 != ip0->src_address.as_u32)) + { + mtrie0 = &ip4_fib_get (vnet_buffer (b)->ip.fib_index)->mtrie; + leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address); + leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 2); + leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 3); + lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); + + vnet_buffer (b)->ip.adj_index[VLIB_TX] = lbi0; + vnet_buffer (b)->ip.adj_index[VLIB_RX] = lbi0; + + lb0 = load_balance_get (lbi0); + dpo0 = load_balance_get_bucket_i (lb0, 0); + + /* + * Must have a route to source otherwise we drop the packet. + * ip4 broadcasts are accepted, e.g. to make dhcp client work + * + * The checks are: + * - the source is a recieve => it's from us => bogus, do this + * first since it sets a different error code. + * - uRPF check for any route to source - accept if passes. + * - allow packets destined to the broadcast address from unknown sources + */ + + *error0 = ((*error0 == IP4_ERROR_UNKNOWN_PROTOCOL + && dpo0->dpoi_type == DPO_RECEIVE) ? + IP4_ERROR_SPOOFED_LOCAL_PACKETS : *error0); + *error0 = ((*error0 == IP4_ERROR_UNKNOWN_PROTOCOL + && !fib_urpf_check_size (lb0->lb_urpf) + && ip0->dst_address.as_u32 != 0xFFFFFFFF) ? + IP4_ERROR_SRC_LOOKUP_MISS : *error0); + + last_check->src.as_u32 = ip0->src_address.as_u32; + last_check->lbi = lbi0; + last_check->error = *error0; + } + else + { + vnet_buffer (b)->ip.adj_index[VLIB_TX] = last_check->lbi; + vnet_buffer (b)->ip.adj_index[VLIB_RX] = last_check->lbi; + *error0 = last_check->error; + } +} + +static inline void +ip4_local_check_src_x2 (vlib_buffer_t ** b, ip4_header_t ** ip, + ip4_local_last_check_t * last_check, u8 * error) +{ + ip4_fib_mtrie_leaf_t leaf[2]; + ip4_fib_mtrie_t *mtrie[2]; + const dpo_id_t *dpo[2]; + load_balance_t *lb[2]; + u32 not_last_hit = 0; + u32 lbi[2]; + + not_last_hit |= ip[0]->src_address.as_u32 ^ last_check->src.as_u32; + not_last_hit |= ip[1]->src_address.as_u32 ^ last_check->src.as_u32; + + vnet_buffer (b[0])->ip.fib_index = + vnet_buffer (b[0])->sw_if_index[VLIB_TX] != ~0 ? + vnet_buffer (b[0])->sw_if_index[VLIB_TX] : + vnet_buffer (b[0])->ip.fib_index; + + vnet_buffer (b[1])->ip.fib_index = + vnet_buffer (b[1])->sw_if_index[VLIB_TX] != ~0 ? + vnet_buffer (b[1])->sw_if_index[VLIB_TX] : + vnet_buffer (b[1])->ip.fib_index; + + if (PREDICT_FALSE (not_last_hit)) + { + mtrie[0] = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie; + mtrie[1] = &ip4_fib_get (vnet_buffer (b[1])->ip.fib_index)->mtrie; + + leaf[0] = ip4_fib_mtrie_lookup_step_one (mtrie[0], &ip[0]->src_address); + leaf[1] = ip4_fib_mtrie_lookup_step_one (mtrie[1], &ip[1]->src_address); + + leaf[0] = ip4_fib_mtrie_lookup_step (mtrie[0], leaf[0], + &ip[0]->src_address, 2); + leaf[1] = ip4_fib_mtrie_lookup_step (mtrie[1], leaf[1], + &ip[1]->src_address, 2); + + leaf[0] = ip4_fib_mtrie_lookup_step (mtrie[0], leaf[0], + &ip[0]->src_address, 3); + leaf[1] = ip4_fib_mtrie_lookup_step (mtrie[1], leaf[1], + &ip[1]->src_address, 3); + + lbi[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf[0]); + lbi[1] = ip4_fib_mtrie_leaf_get_adj_index (leaf[1]); + + vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = lbi[0]; + vnet_buffer (b[0])->ip.adj_index[VLIB_RX] = lbi[0]; + + vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = lbi[1]; + vnet_buffer (b[1])->ip.adj_index[VLIB_RX] = lbi[1]; + + lb[0] = load_balance_get (lbi[0]); + lb[1] = load_balance_get (lbi[1]); + + dpo[0] = load_balance_get_bucket_i (lb[0], 0); + dpo[1] = load_balance_get_bucket_i (lb[1], 0); + + error[0] = ((error[0] == IP4_ERROR_UNKNOWN_PROTOCOL && + dpo[0]->dpoi_type == DPO_RECEIVE) ? + IP4_ERROR_SPOOFED_LOCAL_PACKETS : error[0]); + error[0] = ((error[0] == IP4_ERROR_UNKNOWN_PROTOCOL && + !fib_urpf_check_size (lb[0]->lb_urpf) && + ip[0]->dst_address.as_u32 != 0xFFFFFFFF) + ? IP4_ERROR_SRC_LOOKUP_MISS : error[0]); + + error[1] = ((error[1] == IP4_ERROR_UNKNOWN_PROTOCOL && + dpo[1]->dpoi_type == DPO_RECEIVE) ? + IP4_ERROR_SPOOFED_LOCAL_PACKETS : error[1]); + error[1] = ((error[1] == IP4_ERROR_UNKNOWN_PROTOCOL && + !fib_urpf_check_size (lb[1]->lb_urpf) && + ip[1]->dst_address.as_u32 != 0xFFFFFFFF) + ? IP4_ERROR_SRC_LOOKUP_MISS : error[1]); + + last_check->src.as_u32 = ip[1]->src_address.as_u32; + last_check->lbi = lbi[1]; + last_check->error = error[1]; + } + else + { + vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = last_check->lbi; + vnet_buffer (b[0])->ip.adj_index[VLIB_RX] = last_check->lbi; + + vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = last_check->lbi; + vnet_buffer (b[1])->ip.adj_index[VLIB_RX] = last_check->lbi; + + error[0] = last_check->error; + error[1] = last_check->error; + } +} static inline uword ip4_local_inline (vlib_main_t * vm, @@ -1177,288 +1415,115 @@ ip4_local_inline (vlib_main_t * vm, { ip4_main_t *im = &ip4_main; ip_lookup_main_t *lm = &im->lookup_main; - ip_local_next_t next_index; - u32 *from, *to_next, n_left_from, n_left_to_next; + u32 *from, n_left_from; vlib_node_runtime_t *error_node = vlib_node_get_runtime (vm, ip4_input_node.index); - u8 arc_index = vnet_feat_arc_ip4_local.feature_arc_index; + u16 nexts[VLIB_FRAME_SIZE], *next; + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; + ip4_header_t *ip[2]; + u8 error[2]; + + ip4_local_last_check_t last_check = { + .src = {.as_u32 = 0}, + .lbi = ~0, + .error = IP4_ERROR_UNKNOWN_PROTOCOL + }; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; - next_index = node->cached_next_index; if (node->flags & VLIB_NODE_FLAG_TRACE) ip4_forward_next_trace (vm, node, frame, VLIB_TX); - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from >= 4 && n_left_to_next >= 2) - { - vlib_buffer_t *p0, *p1; - ip4_header_t *ip0, *ip1; - ip4_fib_mtrie_t *mtrie0, *mtrie1; - ip4_fib_mtrie_leaf_t leaf0, leaf1; - const dpo_id_t *dpo0, *dpo1; - const load_balance_t *lb0, *lb1; - u32 pi0, next0, lbi0; - u32 pi1, next1, lbi1; - u8 error0, is_udp0, is_tcp_udp0, good_tcp_udp0, proto0; - u8 error1, is_udp1, is_tcp_udp1, good_tcp_udp1, proto1; - u32 sw_if_index0, sw_if_index1; - - pi0 = to_next[0] = from[0]; - pi1 = to_next[1] = from[1]; - from += 2; - n_left_from -= 2; - to_next += 2; - n_left_to_next -= 2; - - next0 = next1 = IP_LOCAL_NEXT_DROP; - error0 = error1 = IP4_ERROR_UNKNOWN_PROTOCOL; + vlib_get_buffers (vm, from, bufs, n_left_from); + b = bufs; + next = nexts; - p0 = vlib_get_buffer (vm, pi0); - p1 = vlib_get_buffer (vm, pi1); + while (n_left_from >= 6) + { + u32 is_nat, not_batch = 0; - ip0 = vlib_buffer_get_current (p0); - ip1 = vlib_buffer_get_current (p1); + /* Prefetch next iteration. */ + { + vlib_prefetch_buffer_header (b[4], LOAD); + vlib_prefetch_buffer_header (b[5], LOAD); - vnet_buffer (p0)->l3_hdr_offset = p0->current_data; - vnet_buffer (p1)->l3_hdr_offset = p1->current_data; + CLIB_PREFETCH (b[4]->data, CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (b[5]->data, CLIB_CACHE_LINE_BYTES, LOAD); + } - sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX]; - sw_if_index1 = vnet_buffer (p1)->sw_if_index[VLIB_RX]; + error[0] = error[1] = IP4_ERROR_UNKNOWN_PROTOCOL; - proto0 = ip0->protocol; - proto1 = ip1->protocol; + ip[0] = vlib_buffer_get_current (b[0]); + ip[1] = vlib_buffer_get_current (b[1]); - if (head_of_feature_arc == 0) - goto skip_checks; + vnet_buffer (b[0])->l3_hdr_offset = b[0]->current_data; + vnet_buffer (b[1])->l3_hdr_offset = b[1]->current_data; - is_udp0 = proto0 == IP_PROTOCOL_UDP; - is_udp1 = proto1 == IP_PROTOCOL_UDP; - is_tcp_udp0 = is_udp0 || proto0 == IP_PROTOCOL_TCP; - is_tcp_udp1 = is_udp1 || proto1 == IP_PROTOCOL_TCP; + is_nat = b[0]->flags & VNET_BUFFER_F_IS_NATED; + not_batch |= is_nat ^ (b[1]->flags & VNET_BUFFER_F_IS_NATED); - good_tcp_udp0 = - (p0->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT - || (p0->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM - || p0->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)) != 0; - good_tcp_udp1 = (p1->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT - || (p1->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM - || p1->flags & - VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)) != 0; + if (head_of_feature_arc == 0 || (is_nat && not_batch == 0)) + goto skip_checks; - if (PREDICT_FALSE (ip4_local_do_l4_check (is_tcp_udp0, p0->flags) - || ip4_local_do_l4_check (is_tcp_udp1, - p1->flags))) + if (PREDICT_TRUE (not_batch == 0)) + { + ip4_local_check_l4_csum_x2 (vm, b, ip, error); + ip4_local_check_src_x2 (b, ip, &last_check, error); + } + else + { + if (!(b[0]->flags & VNET_BUFFER_F_IS_NATED)) { - if (is_tcp_udp0) - ip4_local_validate_l4 (vm, p0, ip0, is_udp0, &error0, - &good_tcp_udp0); - if (is_tcp_udp1) - ip4_local_validate_l4 (vm, p1, ip1, is_udp1, &error1, - &good_tcp_udp1); + ip4_local_check_l4_csum (vm, b[0], ip[0], &error[0]); + ip4_local_check_src (b[0], ip[0], &last_check, &error[0]); } - - ASSERT (IP4_ERROR_TCP_CHECKSUM + 1 == IP4_ERROR_UDP_CHECKSUM); - error0 = (is_tcp_udp0 && !good_tcp_udp0 - ? IP4_ERROR_TCP_CHECKSUM + is_udp0 : error0); - error1 = (is_tcp_udp1 && !good_tcp_udp1 - ? IP4_ERROR_TCP_CHECKSUM + is_udp1 : error1); - - vnet_buffer (p0)->ip.fib_index = - vnet_buffer (p0)->sw_if_index[VLIB_TX] != ~0 ? - vnet_buffer (p0)->sw_if_index[VLIB_TX] : - vnet_buffer (p0)->ip.fib_index; - - vnet_buffer (p1)->ip.fib_index = - vnet_buffer (p1)->sw_if_index[VLIB_TX] != ~0 ? - vnet_buffer (p1)->sw_if_index[VLIB_TX] : - vnet_buffer (p1)->ip.fib_index; - - - mtrie0 = &ip4_fib_get (vnet_buffer (p0)->ip.fib_index)->mtrie; - mtrie1 = &ip4_fib_get (vnet_buffer (p1)->ip.fib_index)->mtrie; - - leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address); - leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, &ip1->src_address); - leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, - 2); - leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->src_address, - 2); - leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, - 3); - leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->src_address, - 3); - - vnet_buffer (p0)->ip.adj_index[VLIB_RX] = lbi0 = - ip4_fib_mtrie_leaf_get_adj_index (leaf0); - vnet_buffer (p0)->ip.adj_index[VLIB_TX] = lbi0; - - vnet_buffer (p1)->ip.adj_index[VLIB_RX] = lbi1 = - ip4_fib_mtrie_leaf_get_adj_index (leaf1); - vnet_buffer (p1)->ip.adj_index[VLIB_TX] = lbi1; - - lb0 = load_balance_get (lbi0); - lb1 = load_balance_get (lbi1); - dpo0 = load_balance_get_bucket_i (lb0, 0); - dpo1 = load_balance_get_bucket_i (lb1, 0); - - /* - * Must have a route to source otherwise we drop the packet. - * ip4 broadcasts are accepted, e.g. to make dhcp client work - * - * The checks are: - * - the source is a recieve => it's from us => bogus, do this - * first since it sets a different error code. - * - uRPF check for any route to source - accept if passes. - * - allow packets destined to the broadcast address from unknown sources - */ - if (p0->flags & VNET_BUFFER_F_IS_NATED) - goto skip_check0; - - error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL && - dpo0->dpoi_type == DPO_RECEIVE) ? - IP4_ERROR_SPOOFED_LOCAL_PACKETS : error0); - error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL && - !fib_urpf_check_size (lb0->lb_urpf) && - ip0->dst_address.as_u32 != 0xFFFFFFFF) - ? IP4_ERROR_SRC_LOOKUP_MISS : error0); - - skip_check0: - if (p1->flags & VNET_BUFFER_F_IS_NATED) - goto skip_checks; - - error1 = ((error1 == IP4_ERROR_UNKNOWN_PROTOCOL && - dpo1->dpoi_type == DPO_RECEIVE) ? - IP4_ERROR_SPOOFED_LOCAL_PACKETS : error1); - error1 = ((error1 == IP4_ERROR_UNKNOWN_PROTOCOL && - !fib_urpf_check_size (lb1->lb_urpf) && - ip1->dst_address.as_u32 != 0xFFFFFFFF) - ? IP4_ERROR_SRC_LOOKUP_MISS : error1); - - skip_checks: - - next0 = lm->local_next_by_ip_protocol[proto0]; - next1 = lm->local_next_by_ip_protocol[proto1]; - - next0 = - error0 != IP4_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next0; - next1 = - error1 != IP4_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next1; - - p0->error = error0 ? error_node->errors[error0] : 0; - p1->error = error1 ? error_node->errors[error1] : 0; - - if (head_of_feature_arc) + if (!(b[1]->flags & VNET_BUFFER_F_IS_NATED)) { - if (PREDICT_TRUE (error0 == (u8) IP4_ERROR_UNKNOWN_PROTOCOL)) - vnet_feature_arc_start (arc_index, sw_if_index0, &next0, p0); - if (PREDICT_TRUE (error1 == (u8) IP4_ERROR_UNKNOWN_PROTOCOL)) - vnet_feature_arc_start (arc_index, sw_if_index1, &next1, p1); + ip4_local_check_l4_csum (vm, b[1], ip[1], &error[1]); + ip4_local_check_src (b[1], ip[1], &last_check, &error[1]); } - - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, - n_left_to_next, pi0, pi1, - next0, next1); } - while (n_left_from > 0 && n_left_to_next > 0) - { - vlib_buffer_t *p0; - ip4_header_t *ip0; - ip4_fib_mtrie_t *mtrie0; - ip4_fib_mtrie_leaf_t leaf0; - u32 pi0, next0, lbi0; - u8 error0, is_udp0, is_tcp_udp0, good_tcp_udp0, proto0; - load_balance_t *lb0; - const dpo_id_t *dpo0; - u32 sw_if_index0; - - pi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next += 1; - n_left_to_next -= 1; + skip_checks: - next0 = IP_LOCAL_NEXT_DROP; - error0 = IP4_ERROR_UNKNOWN_PROTOCOL; + next[0] = lm->local_next_by_ip_protocol[ip[0]->protocol]; + next[1] = lm->local_next_by_ip_protocol[ip[1]->protocol]; + ip4_local_set_next_and_error (error_node, b[0], &next[0], error[0], + head_of_feature_arc); + ip4_local_set_next_and_error (error_node, b[1], &next[1], error[1], + head_of_feature_arc); - p0 = vlib_get_buffer (vm, pi0); - ip0 = vlib_buffer_get_current (p0); - vnet_buffer (p0)->l3_hdr_offset = p0->current_data; - sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX]; - - proto0 = ip0->protocol; - - if (head_of_feature_arc == 0 || p0->flags & VNET_BUFFER_F_IS_NATED) - goto skip_check; - - is_udp0 = proto0 == IP_PROTOCOL_UDP; - is_tcp_udp0 = is_udp0 || proto0 == IP_PROTOCOL_TCP; - - good_tcp_udp0 = - (p0->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT - || (p0->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM - || p0->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)) != 0; - - if (PREDICT_FALSE (ip4_local_do_l4_check (is_tcp_udp0, p0->flags))) - { - ip4_local_validate_l4 (vm, p0, ip0, is_udp0, &error0, - &good_tcp_udp0); - } + b += 2; + next += 2; + n_left_from -= 2; + } - ASSERT (IP4_ERROR_TCP_CHECKSUM + 1 == IP4_ERROR_UDP_CHECKSUM); - error0 = (is_tcp_udp0 && !good_tcp_udp0 - ? IP4_ERROR_TCP_CHECKSUM + is_udp0 : error0); - - vnet_buffer (p0)->ip.fib_index = - vnet_buffer (p0)->sw_if_index[VLIB_TX] != ~0 ? - vnet_buffer (p0)->sw_if_index[VLIB_TX] : - vnet_buffer (p0)->ip.fib_index; - - mtrie0 = &ip4_fib_get (vnet_buffer (p0)->ip.fib_index)->mtrie; - leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address); - leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, - 2); - leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, - 3); - lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); - vnet_buffer (p0)->ip.adj_index[VLIB_TX] = lbi0; - vnet_buffer (p0)->ip.adj_index[VLIB_RX] = lbi0; + while (n_left_from > 0) + { + error[0] = IP4_ERROR_UNKNOWN_PROTOCOL; - lb0 = load_balance_get (lbi0); - dpo0 = load_balance_get_bucket_i (lb0, 0); + ip[0] = vlib_buffer_get_current (b[0]); + vnet_buffer (b[0])->l3_hdr_offset = b[0]->current_data; - error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL && - dpo0->dpoi_type == DPO_RECEIVE) ? - IP4_ERROR_SPOOFED_LOCAL_PACKETS : error0); - error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL && - !fib_urpf_check_size (lb0->lb_urpf) && - ip0->dst_address.as_u32 != 0xFFFFFFFF) - ? IP4_ERROR_SRC_LOOKUP_MISS : error0); + if (head_of_feature_arc == 0 || (b[0]->flags & VNET_BUFFER_F_IS_NATED)) + goto skip_check; - skip_check: - next0 = lm->local_next_by_ip_protocol[proto0]; - next0 = - error0 != IP4_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next0; + ip4_local_check_l4_csum (vm, b[0], ip[0], &error[0]); + ip4_local_check_src (b[0], ip[0], &last_check, &error[0]); - p0->error = error0 ? error_node->errors[error0] : 0; + skip_check: - if (head_of_feature_arc) - { - if (PREDICT_TRUE (error0 == (u8) IP4_ERROR_UNKNOWN_PROTOCOL)) - vnet_feature_arc_start (arc_index, sw_if_index0, &next0, p0); - } + next[0] = lm->local_next_by_ip_protocol[ip[0]->protocol]; + ip4_local_set_next_and_error (error_node, b[0], &next[0], error[0], + head_of_feature_arc); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, - n_left_to_next, pi0, next0); - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); + b += 1; + next += 1; + n_left_from -= 1; } + vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); return frame->n_vectors; } diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c index 275bcc67b69..a66070302c0 100644 --- a/src/vnet/ip/ip6_forward.c +++ b/src/vnet/ip/ip6_forward.c @@ -1335,6 +1335,7 @@ ip6_local_inline (vlib_main_t * vm, vlib_node_runtime_t * node, error0 = (!ip6_urpf_loose_check (im, p0, ip0) ? IP6_ERROR_SRC_LOOKUP_MISS : error0); } + vnet_buffer (p0)->ip.fib_index = vnet_buffer (p0)->sw_if_index[VLIB_TX] != ~0 ? vnet_buffer (p0)->sw_if_index[VLIB_TX] : |