/* * Copyright (c) 2015 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 #include #include #include #include #include #include #include /* Statistics (not all errors) */ #define foreach_vxlan_encap_error \ _(ENCAPSULATED, "good packets encapsulated") static char * vxlan_encap_error_strings[] = { #define _(sym,string) string, foreach_vxlan_encap_error #undef _ }; typedef enum { #define _(sym,str) VXLAN_ENCAP_ERROR_##sym, foreach_vxlan_encap_error #undef _ VXLAN_ENCAP_N_ERROR, } vxlan_encap_error_t; typedef enum { VXLAN_ENCAP_NEXT_DROP, VXLAN_ENCAP_N_NEXT, } vxlan_encap_next_t; typedef struct { u32 tunnel_index; u32 vni; } vxlan_encap_trace_t; u8 * format_vxlan_encap_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 *); vxlan_encap_trace_t * t = va_arg (*args, vxlan_encap_trace_t *); s = format (s, "VXLAN encap to vxlan_tunnel%d vni %d", t->tunnel_index, t->vni); return s; } always_inline uword vxlan_encap_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame, u8 is_ip4, u8 csum_offload) { u32 n_left_from, next_index, * from, * to_next; vxlan_main_t * vxm = &vxlan_main; vnet_main_t * vnm = vxm->vnet_main; vnet_interface_main_t * im = &vnm->interface_main; vlib_combined_counter_main_t * tx_counter = im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX; u32 pkts_encapsulated = 0; u32 thread_index = vlib_get_thread_index(); u32 sw_if_index0 = 0, sw_if_index1 = 0; u32 next0 = 0, next1 = 0; vxlan_tunnel_t * t0 = NULL, * t1 = NULL; index_t dpoi_idx0 = INDEX_INVALID, dpoi_idx1 = INDEX_INVALID; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; next_index = node->cached_next_index; STATIC_ASSERT_SIZEOF(ip6_vxlan_header_t, 56); STATIC_ASSERT_SIZEOF(ip4_vxlan_header_t, 36); u8 const underlay_hdr_len = is_ip4 ? sizeof(ip4_vxlan_header_t) : sizeof(ip6_vxlan_header_t); u8 const rw_hdr_offset = sizeof t0->rewrite_data - underlay_hdr_len; u16 const l3_len = is_ip4 ? sizeof(ip4_header_t) : sizeof(ip6_header_t); u32 const csum_flags = is_ip4 ? VNET_BUFFER_F_OFFLOAD_IP_CKSUM | VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_OFFLOAD_UDP_CKSUM : VNET_BUFFER_F_OFFLOAD_UDP_CKSUM; 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) { /* 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, LOAD); CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, LOAD); } u32 bi0 = to_next[0] = from[0]; u32 bi1 = to_next[1] = from[1]; from += 2; to_next += 2; n_left_to_next -= 2; n_left_from -= 2; vlib_buffer_t * b0 = vlib_get_buffer (vm, bi0); vlib_buffer_t * b1 = vlib_get_buffer (vm, bi1); u32 flow_hash0 = vnet_l2_compute_flow_hash (b0); u32 flow_hash1 = vnet_l2_compute_flow_hash (b1); /* Get next node index and adj index from tunnel next_dpo */ if (sw_if_index0 != vnet_buffer(b0)->sw_if_index[VLIB_TX]) { sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_TX]; vnet_hw_interface_t *hi0 = vnet_get_sup_hw_interface (vnm, sw_if_index0); t0 = &vxm->tunnels[hi0->dev_instance]; /* Note: change to always set next0 if it may set to drop */ next0 = t0->next_dpo.dpoi_next_node; dpoi_idx0 = t0->next_dpo.dpoi_index; } /* Get next node index and adj index from tunnel next_dpo */ if (sw_if_index1 != vnet_buffer(b1)->sw_if_index[VLIB_TX]) { if (sw_if_index0 == vnet_buffer(b1)->sw_if_index[VLIB_TX]) { sw_if_index1 = sw_if_index0; t1 = t0; next1 = next0; dpoi_idx1 = dpoi_idx0; } else { sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_TX]; vnet_hw_interface_t *hi1 = vnet_get_sup_hw_interface (vnm, sw_if_index1); t1 = &vxm->tunnels[hi1->dev_instance]; /* Note: change to always set next1 if it may set to drop */ next1 = t1->next_dpo.dpoi_next_node; dpoi_idx1 = t1->next_dpo.dpoi_index; } } vnet_buffer(b0)->ip.adj_index[VLIB_TX] = dp
/*
 * Copyright (c) 2015 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.
 */
vxlan_error (DECAPSULATED, "good packets decapsulated")
vxlan_error (NO_SUCH_TUNNEL, "no such tunnel packets")
vxlan_error (BAD_FLAGS, "packets with bad flags field in vxlan header")
rs = ARRAY_LEN(vxlan_encap_error_strings), .error_strings = vxlan_encap_error_strings, .n_next_nodes = VXLAN_ENCAP_N_NEXT, .next_nodes = { [VXLAN_ENCAP_NEXT_DROP] = "error-drop", }, }; VLIB_NODE_FUNCTION_MULTIARCH (vxlan6_encap_node, vxlan6_encap)