diff options
Diffstat (limited to 'vnet/vnet/nsh-vxlan-gpe/decap.c')
-rw-r--r-- | vnet/vnet/nsh-vxlan-gpe/decap.c | 537 |
1 files changed, 0 insertions, 537 deletions
diff --git a/vnet/vnet/nsh-vxlan-gpe/decap.c b/vnet/vnet/nsh-vxlan-gpe/decap.c deleted file mode 100644 index 76003e6003f..00000000000 --- a/vnet/vnet/nsh-vxlan-gpe/decap.c +++ /dev/null @@ -1,537 +0,0 @@ -/* - * nsh.c: nsh packet processing - * - * 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 <vlib/vlib.h> -#include <vnet/pg/pg.h> -#include <vnet/nsh-vxlan-gpe/nsh_vxlan_gpe.h> - -vlib_node_registration_t nsh_vxlan_gpe_input_node; - -/* From nsh-gre */ -u8 * format_nsh_header_with_length (u8 * s, va_list * args); - -typedef struct { - u32 next_index; - u32 tunnel_index; - u32 error; - nsh_header_t h; -} nsh_vxlan_gpe_rx_trace_t; - -static u8 * format_nsh_vxlan_gpe_rx_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 *); - nsh_vxlan_gpe_rx_trace_t * t = va_arg (*args, nsh_vxlan_gpe_rx_trace_t *); - - if (t->tunnel_index != ~0) - { - s = format (s, "NSH-VXLAN: tunnel %d next %d error %d", t->tunnel_index, - t->next_index, t->error); - } - else - { - s = format (s, "NSH-VXLAN: no tunnel next %d error %d\n", t->next_index, - t->error); - } - s = format (s, "\n %U", format_nsh_header_with_length, &t->h, - (u32) sizeof (t->h) /* max size */); - return s; -} - -static uword -nsh_vxlan_gpe_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - u32 n_left_from, next_index, * from, * to_next; - nsh_vxlan_gpe_main_t * ngm = &nsh_vxlan_gpe_main; - vnet_main_t * vnm = ngm->vnet_main; - vnet_interface_main_t * im = &vnm->interface_main; - u32 last_tunnel_index = ~0; - nsh_vxlan_gpe_tunnel_key_t last_key; - u32 pkts_decapsulated = 0; - u32 cpu_index = os_get_cpu_number(); - u32 stats_sw_if_index, stats_n_packets, stats_n_bytes; - - memset (&last_key, 0xff, sizeof (last_key)); - - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - - next_index = node->cached_next_index; - stats_sw_if_index = node->runtime_data[0]; - stats_n_packets = stats_n_bytes = 0; - - 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, next1; - ip4_vxlan_gpe_and_nsh_header_t * iuvn0, * iuvn1; - uword * p0, * p1; - u32 tunnel_index0, tunnel_index1; - nsh_vxlan_gpe_tunnel_t * t0, * t1; - nsh_vxlan_gpe_tunnel_key_t key0, key1; - u32 error0, error1; - u32 sw_if_index0, sw_if_index1, len0, len1; - - /* 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_to_next -= 2; - n_left_from -= 2; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - - /* udp leaves current_data pointing at the vxlan header */ - vlib_buffer_advance - (b0, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t))); - vlib_buffer_advance - (b1, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t))); - - iuvn0 = vlib_buffer_get_current (b0); - iuvn1 = vlib_buffer_get_current (b1); - - /* pop (ip, udp, vxlan, nsh) */ - vlib_buffer_advance (b0, sizeof (*iuvn0)); - vlib_buffer_advance (b1, sizeof (*iuvn1)); - - tunnel_index0 = ~0; - error0 = 0; - next0 = NSH_VXLAN_GPE_INPUT_NEXT_DROP; - - tunnel_index1 = ~0; - error1 = 0; - next1 = NSH_VXLAN_GPE_INPUT_NEXT_DROP; - - key0.src = iuvn0->ip4.src_address.as_u32; - key0.vni = iuvn0->vxlan.vni_res; - key0.spi_si = iuvn0->nsh.spi_si; - key0.pad = 0; - - if (PREDICT_FALSE ((key0.as_u64[0] != last_key.as_u64[0]) - || (key0.as_u64[1] != last_key.as_u64[1]))) - { - p0 = hash_get_mem (ngm->nsh_vxlan_gpe_tunnel_by_key, &key0); - - if (p0 == 0) - { - error0 = NSH_VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; - goto trace0; - } - - last_key.as_u64[0] = key0.as_u64[0]; - last_key.as_u64[1] = key0.as_u64[1]; - tunnel_index0 = last_tunnel_index = p0[0]; - } - else - tunnel_index0 = last_tunnel_index; - - t0 = pool_elt_at_index (ngm->tunnels, tunnel_index0); - - next0 = t0->decap_next_index; - sw_if_index0 = t0->sw_if_index; - len0 = vlib_buffer_length_in_chain(vm, b0); - - /* Required to make the l2 tag push / pop code work on l2 subifs */ - vnet_update_l2_len (b0); - - if (next0 == NSH_VXLAN_GPE_INPUT_NEXT_NSH_VXLAN_GPE_ENCAP) - { - /* - * Functioning as SFF (ie "half NSH tunnel mode") - * If ingress (we are in decap.c) with NSH header, and 'decap next nsh-vxlan-gpe' then "NSH switch" - * 1. Take DST, remap to SRC, remap other keys in place - * 2. Look up new t0 as per above - * 3. Set sw_if_index[VLIB_TX] to be t0->sw_if_index - */ - uword * next_p0; - nsh_vxlan_gpe_tunnel_t * next_t0; - nsh_vxlan_gpe_tunnel_key_t next_key0; - - next_key0.src = iuvn0->ip4.dst_address.as_u32; - next_key0.vni = iuvn0->vxlan.vni_res; - next_key0.spi_si = iuvn0->nsh.spi_si; - next_key0.pad = 0; - - next_p0 = hash_get_mem (ngm->nsh_vxlan_gpe_tunnel_by_key, &next_key0); - - if (next_p0 == 0) - { - error0 = NSH_VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; - goto trace0; - } - next_t0 = pool_elt_at_index (ngm->tunnels, next_p0[0]); - vnet_buffer(b0)->sw_if_index[VLIB_TX] = next_t0->sw_if_index; - - } - else - { - /* - * ip[46] lookup in the configured FIB - * nsh-vxlan-gpe-encap, here's the encap tunnel sw_if_index - */ - vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index; - } - - pkts_decapsulated++; - stats_n_packets += 1; - stats_n_bytes += len0; - - if (PREDICT_FALSE(sw_if_index0 != stats_sw_if_index)) - { - stats_n_packets -= 1; - stats_n_bytes -= len0; - if (stats_n_packets) - vlib_increment_combined_counter( - im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, - cpu_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); - stats_n_packets = 1; - stats_n_bytes = len0; - stats_sw_if_index = sw_if_index0; - } - - trace0: - b0->error = error0 ? node->errors[error0] : 0; - - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - nsh_vxlan_gpe_rx_trace_t *tr - = vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->next_index = next0; - tr->error = error0; - tr->tunnel_index = tunnel_index0; - tr->h = iuvn0->nsh; - } - - key1.src = iuvn1->ip4.src_address.as_u32; - key1.vni = iuvn1->vxlan.vni_res; - key1.spi_si = iuvn1->nsh.spi_si; - key1.pad = 0; - - if (PREDICT_FALSE ((key1.as_u64[0] != last_key.as_u64[0]) - || (key1.as_u64[1] != last_key.as_u64[1]))) - { - p1 = hash_get_mem (ngm->nsh_vxlan_gpe_tunnel_by_key, &key1); - - if (p1 == 0) - { - error1 = NSH_VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; - goto trace1; - } - - last_key.as_u64[0] = key1.as_u64[0]; - last_key.as_u64[1] = key1.as_u64[1]; - tunnel_index1 = last_tunnel_index = p1[0]; - } - else - tunnel_index1 = last_tunnel_index; - - t1 = pool_elt_at_index (ngm->tunnels, tunnel_index1); - - next1 = t1->decap_next_index; - sw_if_index1 = t1->sw_if_index; - len1 = vlib_buffer_length_in_chain(vm, b1); - - /* Required to make the l2 tag push / pop code work on l2 subifs */ - vnet_update_l2_len (b1); - - if (next1 == NSH_VXLAN_GPE_INPUT_NEXT_NSH_VXLAN_GPE_ENCAP) - { - /* - * Functioning as SFF (ie "half NSH tunnel mode") - * If ingress (we are in decap.c) with NSH header, and 'decap next nsh-vxlan-gpe' then "NSH switch" - * 1. Take DST, remap to SRC, remap other keys in place - * 2. Look up new t0 as per above - * 3. Set sw_if_index[VLIB_TX] to be t0->sw_if_index - */ - uword * next_p1; - nsh_vxlan_gpe_tunnel_t * next_t1; - nsh_vxlan_gpe_tunnel_key_t next_key1; - - next_key1.src = iuvn1->ip4.dst_address.as_u32; - next_key1.vni = iuvn1->vxlan.vni_res; - next_key1.spi_si = iuvn1->nsh.spi_si; - next_key1.pad = 0; - - next_p1 = hash_get_mem (ngm->nsh_vxlan_gpe_tunnel_by_key, &next_key1); - - if (next_p1 == 0) - { - error1 = NSH_VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; - goto trace1; - } - next_t1 = pool_elt_at_index (ngm->tunnels, next_p1[0]); - vnet_buffer(b1)->sw_if_index[VLIB_TX] = next_t1->sw_if_index; - - } - else - { - /* - * ip[46] lookup in the configured FIB - * nsh-vxlan-gpe-encap, here's the encap tunnel sw_if_index - */ - vnet_buffer(b1)->sw_if_index[VLIB_TX] = t1->decap_fib_index; - } - - pkts_decapsulated++; - stats_n_packets += 1; - stats_n_bytes += len1; - /* Batch stats increment on the same vxlan tunnel so counter - is not incremented per packet */ - if (PREDICT_FALSE(sw_if_index1 != stats_sw_if_index)) - { - stats_n_packets -= 1; - stats_n_bytes -= len1; - if (stats_n_packets) - vlib_increment_combined_counter( - im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, - cpu_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); - stats_n_packets = 1; - stats_n_bytes = len1; - stats_sw_if_index = sw_if_index1; - } - vnet_buffer(b1)->sw_if_index[VLIB_TX] = t1->decap_fib_index; - - trace1: - b1->error = error1 ? node->errors[error1] : 0; - - if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) - { - nsh_vxlan_gpe_rx_trace_t *tr - = vlib_add_trace (vm, node, b1, sizeof (*tr)); - tr->next_index = next1; - tr->error = error1; - tr->tunnel_index = tunnel_index1; - tr->h = iuvn1->nsh; - } - - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, - to_next, n_left_to_next, - bi0, bi1, next0, next1); - } - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t * b0; - u32 next0; - ip4_vxlan_gpe_and_nsh_header_t * iuvn0; - uword * p0; - u32 tunnel_index0; - nsh_vxlan_gpe_tunnel_t * t0; - nsh_vxlan_gpe_tunnel_key_t key0; - u32 error0; - u32 sw_if_index0, len0; - - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - - /* udp leaves current_data pointing at the vxlan header */ - vlib_buffer_advance - (b0, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t))); - - iuvn0 = vlib_buffer_get_current (b0); - - /* pop (ip, udp, vxlan, nsh) */ - vlib_buffer_advance (b0, sizeof (*iuvn0)); - - tunnel_index0 = ~0; - error0 = 0; - next0 = NSH_VXLAN_GPE_INPUT_NEXT_DROP; - - key0.src = iuvn0->ip4.src_address.as_u32; - key0.vni = iuvn0->vxlan.vni_res; - key0.spi_si = iuvn0->nsh.spi_si; - key0.pad = 0; - - if (PREDICT_FALSE ((key0.as_u64[0] != last_key.as_u64[0]) - || (key0.as_u64[1] != last_key.as_u64[1]))) - { - p0 = hash_get_mem (ngm->nsh_vxlan_gpe_tunnel_by_key, &key0); - - if (p0 == 0) - { - error0 = NSH_VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; - goto trace00; - } - - last_key.as_u64[0] = key0.as_u64[0]; - last_key.as_u64[1] = key0.as_u64[1]; - tunnel_index0 = last_tunnel_index = p0[0]; - } - else - tunnel_index0 = last_tunnel_index; - - t0 = pool_elt_at_index (ngm->tunnels, tunnel_index0); - - next0 = t0->decap_next_index; - sw_if_index0 = t0->sw_if_index; - len0 = vlib_buffer_length_in_chain(vm, b0); - - /* Required to make the l2 tag push / pop code work on l2 subifs */ - vnet_update_l2_len (b0); - - if (next0 == NSH_VXLAN_GPE_INPUT_NEXT_NSH_VXLAN_GPE_ENCAP) - { - /* - * Functioning as SFF (ie "half NSH tunnel mode") - * If ingress (we are in decap.c) with NSH header, and 'decap next nsh-vxlan-gpe' then "NSH switch" - * 1. Take DST, remap to SRC, remap other keys in place - * 2. Look up new t0 as per above - * 3. Set sw_if_index[VLIB_TX] to be t0->sw_if_index - */ - uword * next_p0; - nsh_vxlan_gpe_tunnel_t * next_t0; - nsh_vxlan_gpe_tunnel_key_t next_key0; - - next_key0.src = iuvn0->ip4.dst_address.as_u32; - next_key0.vni = iuvn0->vxlan.vni_res; - next_key0.spi_si = iuvn0->nsh.spi_si; - next_key0.pad = 0; - - next_p0 = hash_get_mem (ngm->nsh_vxlan_gpe_tunnel_by_key, &next_key0); - - if (next_p0 == 0) - { - error0 = NSH_VXLAN_GPE_ERROR_NO_SUCH_TUNNEL; - goto trace00; - } - next_t0 = pool_elt_at_index (ngm->tunnels, next_p0[0]); - vnet_buffer(b0)->sw_if_index[VLIB_TX] = next_t0->sw_if_index; - - } - else - { - /* - * ip[46] lookup in the configured FIB - * nsh-vxlan-gpe-encap, here's the encap tunnel sw_if_index - */ - vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index; - } - - pkts_decapsulated ++; - - stats_n_packets += 1; - stats_n_bytes += len0; - - /* Batch stats increment on the same nsh-vxlan-gpe tunnel so counter - is not incremented per packet */ - if (PREDICT_FALSE(sw_if_index0 != stats_sw_if_index)) - { - stats_n_packets -= 1; - stats_n_bytes -= len0; - if (stats_n_packets) - vlib_increment_combined_counter( - im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, - cpu_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); - stats_n_packets = 1; - stats_n_bytes = len0; - stats_sw_if_index = sw_if_index0; - } - - trace00: - b0->error = error0 ? node->errors[error0] : 0; - - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - nsh_vxlan_gpe_rx_trace_t *tr - = vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->next_index = next0; - tr->error = error0; - tr->tunnel_index = tunnel_index0; - tr->h = iuvn0->nsh; - } - 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); - } - vlib_node_increment_counter (vm, nsh_vxlan_gpe_input_node.index, - NSH_VXLAN_GPE_ERROR_DECAPSULATED, - pkts_decapsulated); - /* Increment any remaining batch stats */ - if (stats_n_packets) - { - vlib_increment_combined_counter( - im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, cpu_index, - stats_sw_if_index, stats_n_packets, stats_n_bytes); - node->runtime_data[0] = stats_sw_if_index; - } - return from_frame->n_vectors; -} - -static char * nsh_vxlan_gpe_error_strings[] = { -#define nsh_vxlan_gpe_error(n,s) s, -#include <vnet/nsh-vxlan-gpe/nsh_vxlan_gpe_error.def> -#undef nsh_vxlan_gpe_error -#undef _ -}; - -VLIB_REGISTER_NODE (nsh_vxlan_gpe_input_node) = { - .function = nsh_vxlan_gpe_input, - .name = "nsh-vxlan-gpe-input", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - - .n_errors = NSH_VXLAN_GPE_N_ERROR, - .error_strings = nsh_vxlan_gpe_error_strings, - - .n_next_nodes = NSH_VXLAN_GPE_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [NSH_VXLAN_GPE_INPUT_NEXT_##s] = n, - foreach_nsh_vxlan_gpe_input_next -#undef _ - }, - - .format_buffer = format_nsh_header_with_length, - .format_trace = format_nsh_vxlan_gpe_rx_trace, - // $$$$ .unformat_buffer = unformat_nsh_vxlan_gpe_header, -}; |