From 4ba19b8a75c40cecd3818af2fd657fe5bf1b2f41 Mon Sep 17 00:00:00 2001 From: Filip Tehlar Date: Tue, 26 Feb 2019 02:59:07 -0800 Subject: nsh: migrate old MUTIARCH macros to VLIB_NODE_FN Change-Id: Iafe8b3a38f2a7d7571e60db91608d8130bb07cb3 Signed-off-by: Filip Tehlar --- src/plugins/nsh/nsh_node.c | 982 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 982 insertions(+) create mode 100644 src/plugins/nsh/nsh_node.c (limited to 'src/plugins/nsh/nsh_node.c') diff --git a/src/plugins/nsh/nsh_node.c b/src/plugins/nsh/nsh_node.c new file mode 100644 index 00000000000..5e2af68e417 --- /dev/null +++ b/src/plugins/nsh/nsh_node.c @@ -0,0 +1,982 @@ +/* + * nsh_node.c - nsh nodes + * + * Copyright (c) 2013 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 + +always_inline void +nsh_md2_encap (vlib_buffer_t * b, nsh_base_header_t * hdr, + nsh_entry_t * nsh_entry) +{ + nsh_main_t *nm = &nsh_main; + nsh_base_header_t *nsh_base; + nsh_tlv_header_t *opt0; + nsh_tlv_header_t *limit0; + nsh_tlv_header_t *nsh_md2; + nsh_option_map_t *nsh_option; + u8 old_option_size = 0; + u8 new_option_size = 0; + + /* Populate the NSH Header */ + opt0 = (nsh_tlv_header_t *) (nsh_entry->tlvs_data); + limit0 = (nsh_tlv_header_t *) (nsh_entry->tlvs_data + nsh_entry->tlvs_len); + + nsh_md2 = (nsh_tlv_header_t *) ((u8 *) hdr /*nsh_entry->rewrite */ + + sizeof (nsh_base_header_t)); + nsh_entry->rewrite_size = sizeof (nsh_base_header_t); + + /* Scan the set of variable metadata, process ones that we understand */ + while (opt0 < limit0) + { + old_option_size = sizeof (nsh_tlv_header_t) + opt0->length; + /* round to 4-byte */ + old_option_size = ((old_option_size + 3) >> 2) << 2; + + nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type); + if (nsh_option == NULL) + { + goto next_tlv_md2; + } + + if (nm->options[nsh_option->option_id]) + { + if ((*nm->options[nsh_option->option_id]) (b, nsh_md2)) + { + goto next_tlv_md2; + } + + /* option length may be varied */ + new_option_size = sizeof (nsh_tlv_header_t) + nsh_md2->length; + /* round to 4-byte */ + new_option_size = ((new_option_size + 3) >> 2) << 2; + nsh_entry->rewrite_size += new_option_size; + + nsh_md2 = (nsh_tlv_header_t *) (((u8 *) nsh_md2) + new_option_size); + opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size); + + } + else + { + next_tlv_md2: + opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size); + } + } + + /* update nsh header's length */ + nsh_base = (nsh_base_header_t *) nsh_entry->rewrite; + nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) | + ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK); + return; +} + +always_inline void +nsh_md2_swap (vlib_buffer_t * b, + nsh_base_header_t * hdr, + u32 header_len, + nsh_entry_t * nsh_entry, u32 * next, u32 drop_node_val) +{ + nsh_main_t *nm = &nsh_main; + nsh_base_header_t *nsh_base; + nsh_tlv_header_t *opt0; + nsh_tlv_header_t *limit0; + nsh_tlv_header_t *nsh_md2; + nsh_option_map_t *nsh_option; + u8 old_option_size = 0; + u8 new_option_size = 0; + + /* Populate the NSH Header */ + opt0 = (nsh_md2_data_t *) (hdr + 1); + limit0 = (nsh_md2_data_t *) ((u8 *) hdr + header_len); + + nsh_md2 = + (nsh_tlv_header_t *) (nsh_entry->rewrite + sizeof (nsh_base_header_t)); + nsh_entry->rewrite_size = sizeof (nsh_base_header_t); + + /* Scan the set of variable metadata, process ones that we understand */ + while (opt0 < limit0) + { + old_option_size = sizeof (nsh_tlv_header_t) + opt0->length; + /* round to 4-byte */ + old_option_size = ((old_option_size + 3) >> 2) << 2; + + nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type); + if (nsh_option == NULL) + { + goto next_tlv_md2; + } + + if (nm->swap_options[nsh_option->option_id]) + { + if ((*nm->swap_options[nsh_option->option_id]) (b, opt0, nsh_md2)) + { + goto next_tlv_md2; + } + + /* option length may be varied */ + new_option_size = sizeof (nsh_tlv_header_t) + nsh_md2->length; + /* round to 4-byte */ + new_option_size = ((new_option_size + 3) >> 2) << 2; + nsh_entry->rewrite_size += new_option_size; + nsh_md2 = (nsh_tlv_header_t *) (((u8 *) nsh_md2) + new_option_size); + + opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size); + + } + else + { + next_tlv_md2: + opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size); + } + } + + /* update nsh header's length */ + nsh_base = (nsh_base_header_t *) nsh_entry->rewrite; + nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) | + ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK); + return; +} + +always_inline void +nsh_md2_decap (vlib_buffer_t * b, + nsh_base_header_t * hdr, + u32 * header_len, u32 * next, u32 drop_node_val) +{ + nsh_main_t *nm = &nsh_main; + nsh_md2_data_t *opt0; + nsh_md2_data_t *limit0; + nsh_option_map_t *nsh_option; + u8 option_len = 0; + + /* Populate the NSH Header */ + opt0 = (nsh_md2_data_t *) (hdr + 1); + limit0 = (nsh_md2_data_t *) ((u8 *) hdr + *header_len); + + /* Scan the set of variable metadata, process ones that we understand */ + while (opt0 < limit0) + { + nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type); + if (nsh_option == NULL) + { + *next = drop_node_val; + return; + } + + if (nm->pop_options[nsh_option->option_id]) + { + if ((*nm->pop_options[nsh_option->option_id]) (b, opt0)) + { + *next = drop_node_val; + return; + } + } + /* round to 4-byte */ + option_len = ((opt0->length + 3) >> 2) << 2; + opt0 = + (nsh_md2_data_t *) (((u8 *) opt0) + sizeof (nsh_md2_data_t) + + option_len); + *next = + (nm->decap_v4_next_override) ? (nm->decap_v4_next_override) : (*next); + *header_len = (nm->decap_v4_next_override) ? 0 : (*header_len); + } + + return; +} + +static uword +nsh_input_map (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame, u32 node_type) +{ + u32 n_left_from, next_index, *from, *to_next; + nsh_main_t *nm = &nsh_main; + + from = vlib_frame_vector_args (from_frame); + n_left_from = 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 bi0, bi1; + vlib_buffer_t *b0, *b1; + u32 next0 = NSH_NODE_NEXT_DROP, next1 = NSH_NODE_NEXT_DROP; + uword *entry0, *entry1; + nsh_base_header_t *hdr0 = 0, *hdr1 = 0; + u32 header_len0 = 0, header_len1 = 0; + u32 nsp_nsi0, nsp_nsi1; + u32 ttl0, ttl1; + u32 error0, error1; + nsh_map_t *map0 = 0, *map1 = 0; + nsh_entry_t *nsh_entry0 = 0, *nsh_entry1 = 0; + nsh_base_header_t *encap_hdr0 = 0, *encap_hdr1 = 0; + u32 encap_hdr_len0 = 0, encap_hdr_len1 = 0; + nsh_proxy_session_by_key_t key0, key1; + uword *p0, *p1; + nsh_proxy_session_t *proxy0, *proxy1; + u32 sw_if_index0 = 0, sw_if_index1 = 0; + ethernet_header_t dummy_eth0, dummy_eth1; + + /* 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, 2 * CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD); + } + + bi0 = from[0]; + bi1 = from[1]; + to_next[0] = bi0; + to_next[1] = bi1; + from += 2; + to_next += 2; + n_left_from -= 2; + n_left_to_next -= 2; + + error0 = 0; + error1 = 0; + + b0 = vlib_get_buffer (vm, bi0); + b1 = vlib_get_buffer (vm, bi1); + hdr0 = vlib_buffer_get_current (b0); + hdr1 = vlib_buffer_get_current (b1); + + /* Process packet 0 */ + if (node_type == NSH_INPUT_TYPE) + { + nsp_nsi0 = hdr0->nsp_nsi; + header_len0 = (hdr0->length & NSH_LEN_MASK) * 4; + ttl0 = (hdr0->ver_o_c & NSH_TTL_H4_MASK) << 2 | + (hdr0->length & NSH_TTL_L2_MASK) >> 6; + ttl0 = ttl0 - 1; + if (PREDICT_FALSE (ttl0 == 0)) + { + error0 = NSH_NODE_ERROR_INVALID_TTL; + goto trace0; + } + } + else if (node_type == NSH_CLASSIFIER_TYPE) + { + nsp_nsi0 = + clib_host_to_net_u32 (vnet_buffer (b0)-> + l2_classify.opaque_index); + } + else if (node_type == NSH_AWARE_VNF_PROXY_TYPE) + { + /* Push dummy Eth header */ + char dummy_dst_address[6] = + { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66 }; + char dummy_src_address[6] = + { 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc }; + clib_memcpy_fast (dummy_eth0.dst_address, dummy_dst_address, 6); + clib_memcpy_fast (dummy_eth0.src_address, dummy_src_address, 6); + dummy_eth0.type = 0x0800; + vlib_buffer_advance (b0, -(word) sizeof (ethernet_header_t)); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy_fast (hdr0, &dummy_eth0, + (word) sizeof (ethernet_header_t)); + + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + nsp_nsi0 = nm->tunnel_index_by_sw_if_index[sw_if_index0]; + } + else + { + clib_memset (&key0, 0, sizeof (key0)); + key0.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4; + key0.transport_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + p0 = hash_get_mem (nm->nsh_proxy_session_by_key, &key0); + if (PREDICT_FALSE (p0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_PROXY; + goto trace0; + } + + proxy0 = pool_elt_at_index (nm->nsh_proxy_sessions, p0[0]); + if (PREDICT_FALSE (proxy0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_PROXY; + goto trace0; + } + nsp_nsi0 = proxy0->nsp_nsi; + } + + entry0 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi0); + if (PREDICT_FALSE (entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace0; + } + + /* Entry should point to a mapping ... */ + map0 = pool_elt_at_index (nm->nsh_mappings, entry0[0]); + if (PREDICT_FALSE (map0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace0; + } + + /* set up things for next node to transmit ie which node to handle it and where */ + next0 = map0->next_node; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = map0->sw_if_index; + vnet_buffer (b0)->ip.adj_index[VLIB_TX] = map0->adj_index; + + if (PREDICT_FALSE (map0->nsh_action == NSH_ACTION_POP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr0->md_type == 2)) + { + nsh_md2_decap (b0, hdr0, &header_len0, &next0, + NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP)) + { + error0 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace0; + } + vnet_buffer (b0)->sw_if_index[VLIB_RX] = + map0->rx_sw_if_index; + } + + /* Pop NSH header */ + vlib_buffer_advance (b0, (word) header_len0); + goto trace0; + } + + entry0 = hash_get_mem (nm->nsh_entry_by_key, &map0->mapped_nsp_nsi); + if (PREDICT_FALSE (entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_ENTRY; + goto trace0; + } + + nsh_entry0 = + (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry0[0]); + encap_hdr0 = (nsh_base_header_t *) (nsh_entry0->rewrite); + /* rewrite_size should equal to (encap_hdr0->length * 4) */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + + if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_SWAP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr0->md_type == 2)) + { + nsh_md2_swap (b0, hdr0, header_len0, nsh_entry0, + &next0, NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP)) + { + error0 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace0; + } + } + + /* Pop old NSH header */ + vlib_buffer_advance (b0, (word) header_len0); + + /* After processing, md2's length may be varied */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b0, -(word) encap_hdr_len0); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0); + + goto trace0; + } + + if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_PUSH)) + { + /* After processing, md2's length may be varied */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b0, -(word) encap_hdr_len0); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0); + + /* Manipulate MD2 */ + if (PREDICT_FALSE (nsh_entry0->nsh_base.md_type == 2)) + { + nsh_md2_encap (b0, hdr0, nsh_entry0); + } + + } + + trace0: + b0->error = error0 ? node->errors[error0] : 0; + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_input_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy_fast (&(tr->trace_data), hdr0, + ((hdr0->length & NSH_LEN_MASK) * 4)); + } + + /* Process packet 1 */ + if (node_type == NSH_INPUT_TYPE) + { + nsp_nsi1 = hdr1->nsp_nsi; + header_len1 = (hdr1->length & NSH_LEN_MASK) * 4; + ttl1 = (hdr1->ver_o_c & NSH_TTL_H4_MASK) << 2 | + (hdr1->length & NSH_TTL_L2_MASK) >> 6; + ttl1 = ttl1 - 1; + if (PREDICT_FALSE (ttl1 == 0)) + { + error1 = NSH_NODE_ERROR_INVALID_TTL; + goto trace1; + } + } + else if (node_type == NSH_CLASSIFIER_TYPE) + { + nsp_nsi1 = + clib_host_to_net_u32 (vnet_buffer (b1)-> + l2_classify.opaque_index); + } + else if (node_type == NSH_AWARE_VNF_PROXY_TYPE) + { + /* Push dummy Eth header */ + char dummy_dst_address[6] = + { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66 }; + char dummy_src_address[6] = + { 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc }; + clib_memcpy_fast (dummy_eth1.dst_address, dummy_dst_address, 6); + clib_memcpy_fast (dummy_eth1.src_address, dummy_src_address, 6); + dummy_eth1.type = 0x0800; + vlib_buffer_advance (b1, -(word) sizeof (ethernet_header_t)); + hdr1 = vlib_buffer_get_current (b1); + clib_memcpy_fast (hdr1, &dummy_eth1, + (word) sizeof (ethernet_header_t)); + + sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX]; + nsp_nsi1 = nm->tunnel_index_by_sw_if_index[sw_if_index1]; + } + else + { + clib_memset (&key1, 0, sizeof (key1)); + key1.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4; + key1.transport_index = vnet_buffer (b1)->sw_if_index[VLIB_RX]; + + p1 = hash_get_mem (nm->nsh_proxy_session_by_key, &key1); + if (PREDICT_FALSE (p1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_PROXY; + goto trace1; + } + + proxy1 = pool_elt_at_index (nm->nsh_proxy_sessions, p1[0]); + if (PREDICT_FALSE (proxy1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_PROXY; + goto trace1; + } + nsp_nsi1 = proxy1->nsp_nsi; + } + + entry1 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi1); + if (PREDICT_FALSE (entry1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_MAPPING; + goto trace1; + } + + /* Entry should point to a mapping ... */ + map1 = pool_elt_at_index (nm->nsh_mappings, entry1[0]); + if (PREDICT_FALSE (map1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_MAPPING; + goto trace1; + } + + /* set up things for next node to transmit ie which node to handle it and where */ + next1 = map1->next_node; + vnet_buffer (b1)->sw_if_index[VLIB_TX] = map1->sw_if_index; + vnet_buffer (b1)->ip.adj_index[VLIB_TX] = map1->adj_index; + + if (PREDICT_FALSE (map1->nsh_action == NSH_ACTION_POP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr1->md_type == 2)) + { + nsh_md2_decap (b1, hdr1, &header_len1, &next1, + NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next1 == NSH_NODE_NEXT_DROP)) + { + error1 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace1; + } + vnet_buffer (b1)->sw_if_index[VLIB_RX] = + map1->rx_sw_if_index; + } + + /* Pop NSH header */ + vlib_buffer_advance (b1, (word) header_len1); + goto trace1; + } + + entry1 = hash_get_mem (nm->nsh_entry_by_key, &map1->mapped_nsp_nsi); + if (PREDICT_FALSE (entry1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_ENTRY; + goto trace1; + } + + nsh_entry1 = + (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry1[0]); + encap_hdr1 = (nsh_base_header_t *) (nsh_entry1->rewrite); + /* rewrite_size should equal to (encap_hdr0->length * 4) */ + encap_hdr_len1 = nsh_entry1->rewrite_size; + + if (PREDICT_TRUE (map1->nsh_action == NSH_ACTION_SWAP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr1->md_type == 2)) + { + nsh_md2_swap (b1, hdr1, header_len1, nsh_entry1, + &next1, NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next1 == NSH_NODE_NEXT_DROP)) + { + error1 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace1; + } + } + + /* Pop old NSH header */ + vlib_buffer_advance (b1, (word) header_len1); + + /* After processing, md2's length may be varied */ + encap_hdr_len1 = nsh_entry1->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b1, -(word) encap_hdr_len1); + hdr1 = vlib_buffer_get_current (b1); + clib_memcpy_fast (hdr1, encap_hdr1, (word) encap_hdr_len1); + + goto trace1; + } + + if (PREDICT_FALSE (map1->nsh_action == NSH_ACTION_PUSH)) + { + /* After processing, md2's length may be varied */ + encap_hdr_len1 = nsh_entry1->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b1, -(word) encap_hdr_len1); + hdr1 = vlib_buffer_get_current (b1); + clib_memcpy_fast (hdr1, encap_hdr1, (word) encap_hdr_len1); + + /* Manipulate MD2 */ + if (PREDICT_FALSE (nsh_entry1->nsh_base.md_type == 2)) + { + nsh_md2_encap (b1, hdr1, nsh_entry1); + } + + } + + trace1: + b1->error = error1 ? node->errors[error1] : 0; + + if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_input_trace_t *tr = + vlib_add_trace (vm, node, b1, sizeof (*tr)); + clib_memcpy_fast (&(tr->trace_data), hdr1, + ((hdr1->length & NSH_LEN_MASK) * 4)); + } + + 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 = 0; + vlib_buffer_t *b0 = NULL; + u32 next0 = NSH_NODE_NEXT_DROP; + uword *entry0; + nsh_base_header_t *hdr0 = 0; + u32 header_len0 = 0; + u32 nsp_nsi0; + u32 ttl0; + u32 error0; + nsh_map_t *map0 = 0; + nsh_entry_t *nsh_entry0 = 0; + nsh_base_header_t *encap_hdr0 = 0; + u32 encap_hdr_len0 = 0; + nsh_proxy_session_by_key_t key0; + uword *p0; + nsh_proxy_session_t *proxy0 = 0; + u32 sw_if_index0 = 0; + ethernet_header_t dummy_eth0; + + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + error0 = 0; + + b0 = vlib_get_buffer (vm, bi0); + hdr0 = vlib_buffer_get_current (b0); + + if (node_type == NSH_INPUT_TYPE) + { + nsp_nsi0 = hdr0->nsp_nsi; + header_len0 = (hdr0->length & NSH_LEN_MASK) * 4; + ttl0 = (hdr0->ver_o_c & NSH_TTL_H4_MASK) << 2 | + (hdr0->length & NSH_TTL_L2_MASK) >> 6; + ttl0 = ttl0 - 1; + if (PREDICT_FALSE (ttl0 == 0)) + { + error0 = NSH_NODE_ERROR_INVALID_TTL; + goto trace00; + } + } + else if (node_type == NSH_CLASSIFIER_TYPE) + { + nsp_nsi0 = + clib_host_to_net_u32 (vnet_buffer (b0)-> + l2_classify.opaque_index); + } + else if (node_type == NSH_AWARE_VNF_PROXY_TYPE) + { + /* Push dummy Eth header */ + char dummy_dst_address[6] = + { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66 }; + char dummy_src_address[6] = + { 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc }; + clib_memcpy_fast (dummy_eth0.dst_address, dummy_dst_address, 6); + clib_memcpy_fast (dummy_eth0.src_address, dummy_src_address, 6); + dummy_eth0.type = 0x0800; + vlib_buffer_advance (b0, -(word) sizeof (ethernet_header_t)); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy_fast (hdr0, &dummy_eth0, + (word) sizeof (ethernet_header_t)); + + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + nsp_nsi0 = nm->tunnel_index_by_sw_if_index[sw_if_index0]; + } + else + { + clib_memset (&key0, 0, sizeof (key0)); + key0.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4; + key0.transport_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + p0 = hash_get_mem (nm->nsh_proxy_session_by_key, &key0); + if (PREDICT_FALSE (p0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_PROXY; + goto trace00; + } + + proxy0 = pool_elt_at_index (nm->nsh_proxy_sessions, p0[0]); + if (PREDICT_FALSE (proxy0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_PROXY; + goto trace00; + } + nsp_nsi0 = proxy0->nsp_nsi; + } + + entry0 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi0); + + if (PREDICT_FALSE (entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace00; + } + + /* Entry should point to a mapping ... */ + map0 = pool_elt_at_index (nm->nsh_mappings, entry0[0]); + + if (PREDICT_FALSE (map0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace00; + } + + /* set up things for next node to transmit ie which node to handle it and where */ + next0 = map0->next_node; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = map0->sw_if_index; + vnet_buffer (b0)->ip.adj_index[VLIB_TX] = map0->adj_index; + vnet_buffer (b0)->sw_if_index[VLIB_RX] = map0->nsh_sw_if; + + if (PREDICT_FALSE (map0->nsh_action == NSH_ACTION_POP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr0->md_type == 2)) + { + nsh_md2_decap (b0, hdr0, &header_len0, &next0, + NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP)) + { + error0 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace00; + } + vnet_buffer (b0)->sw_if_index[VLIB_RX] = + map0->rx_sw_if_index; + } + + /* Pop NSH header */ + vlib_buffer_advance (b0, (word) header_len0); + goto trace00; + } + + entry0 = hash_get_mem (nm->nsh_entry_by_key, &map0->mapped_nsp_nsi); + if (PREDICT_FALSE (entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_ENTRY; + goto trace00; + } + + nsh_entry0 = + (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry0[0]); + encap_hdr0 = (nsh_base_header_t *) (nsh_entry0->rewrite); + /* rewrite_size should equal to (encap_hdr0->length * 4) */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + + if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_SWAP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr0->md_type == 2)) + { + nsh_md2_swap (b0, hdr0, header_len0, nsh_entry0, + &next0, NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP)) + { + error0 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace00; + } + } + + /* Pop old NSH header */ + vlib_buffer_advance (b0, (word) header_len0); + + /* After processing, md2's length may be varied */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b0, -(word) encap_hdr_len0); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0); + + goto trace00; + } + + if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_PUSH)) + { + /* After processing, md2's length may be varied */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b0, -(word) encap_hdr_len0); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy_fast (hdr0, encap_hdr0, (word) encap_hdr_len0); + /* Manipulate MD2 */ + if (PREDICT_FALSE (nsh_entry0->nsh_base.md_type == 2)) + { + nsh_md2_encap (b0, hdr0, nsh_entry0); + } + + } + + trace00:b0->error = error0 ? node->errors[error0] : 0; + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_input_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy_fast (&(tr->trace_data[0]), hdr0, + ((hdr0->length & NSH_LEN_MASK) * 4)); + } + + 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 from_frame->n_vectors; +} + +/** + * @brief Graph processing dispatch function for NSH Input + * + * @node nsh_input + * @param *vm + * @param *node + * @param *from_frame + * + * @return from_frame->n_vectors + * + */ +VLIB_NODE_FN (nsh_input) (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return nsh_input_map (vm, node, from_frame, NSH_INPUT_TYPE); +} + +/** + * @brief Graph processing dispatch function for NSH-Proxy + * + * @node nsh_proxy + * @param *vm + * @param *node + * @param *from_frame + * + * @return from_frame->n_vectors + * + */ +VLIB_NODE_FN (nsh_proxy) (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return nsh_input_map (vm, node, from_frame, NSH_PROXY_TYPE); +} + +/** + * @brief Graph processing dispatch function for NSH Classifier + * + * @node nsh_classifier + * @param *vm + * @param *node + * @param *from_frame + * + * @return from_frame->n_vectors + * + */ +VLIB_NODE_FN (nsh_classifier) (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return nsh_input_map (vm, node, from_frame, NSH_CLASSIFIER_TYPE); +} + +/** + * @brief Graph processing dispatch function for NSH-AWARE-VNF-PROXY + * + * @node nsh_aware_vnf_proxy + * @param *vm + * @param *node + * @param *from_frame + * + * @return from_frame->n_vectors + * + */ +VLIB_NODE_FN (nsh_aware_vnf_proxy) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return nsh_input_map (vm, node, from_frame, NSH_AWARE_VNF_PROXY_TYPE); +} + +static char *nsh_node_error_strings[] = { +#define _(sym,string) string, + foreach_nsh_node_error +#undef _ +}; + +/* *INDENT-OFF* */ + +/* register nsh-input node */ +VLIB_REGISTER_NODE (nsh_input_node) = { + .name = "nsh-input", + .vector_size = sizeof (u32), + .format_trace = format_nsh_node_map_trace, + .format_buffer = format_nsh_header, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN (nsh_node_error_strings), + .error_strings = nsh_node_error_strings, + .n_next_nodes = NSH_NODE_N_NEXT, + .next_nodes = { +#define _(s,n) [NSH_NODE_NEXT_##s] = n, + foreach_nsh_node_next +#undef _ + }, +}; + +/* register nsh-proxy node */ +VLIB_REGISTER_NODE (nsh_proxy_node) = +{ + .name = "nsh-proxy", + .vector_size = sizeof (u32), + .format_trace = format_nsh_node_map_trace, + .format_buffer = format_nsh_header, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN (nsh_node_error_strings), + .error_strings = nsh_node_error_strings, + .n_next_nodes = NSH_NODE_N_NEXT, + .next_nodes = { +#define _(s,n) [NSH_NODE_NEXT_##s] = n, + foreach_nsh_node_next +#undef _ + }, +}; + +/* register nsh-classifier node */ +VLIB_REGISTER_NODE (nsh_classifier_node) = +{ + .name = "nsh-classifier", + .vector_size = sizeof (u32), + .format_trace = format_nsh_node_map_trace, + .format_buffer = format_nsh_header, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN (nsh_node_error_strings), + .error_strings = nsh_node_error_strings, + .n_next_nodes = NSH_NODE_N_NEXT, + .next_nodes = { +#define _(s,n) [NSH_NODE_NEXT_##s] = n, + foreach_nsh_node_next +#undef _ + }, +}; + +/* register nsh-aware-vnf-proxy node */ +VLIB_REGISTER_NODE (nsh_aware_vnf_proxy_node) = +{ + .name = "nsh-aware-vnf-proxy", + .vector_size = sizeof (u32), + .format_trace = format_nsh_node_map_trace, + .format_buffer = format_nsh_header, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN (nsh_node_error_strings), + .error_strings = nsh_node_error_strings, + .n_next_nodes = NSH_NODE_N_NEXT, + .next_nodes = { +#define _(s,n) [NSH_NODE_NEXT_##s] = n, + foreach_nsh_node_next +#undef _ + }, +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg