diff options
author | 2018-06-22 11:32:12 +0200 | |
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committer | 2018-06-25 20:19:40 +0000 | |
commit | 381e9a90748bb659f56081123052e3e95501a4b4 (patch) | |
tree | fbc166ecf8637b8b9ea262f3ac4181396149d534 /src/vnet/map/ip4_map_t.c | |
parent | e4d5a652a392c9f74501da5778a7fe161b183476 (diff) |
MAP: Move MAP-E/T to a plugin.
Only remaining traces of MAP in the src/vnet is now in buffer.h.
Awaiting a new buffer opaque API (hint, hint).
Change-Id: Ie165561484731f1d7ed6e0f604b43624e06db3f0
Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src/vnet/map/ip4_map_t.c')
-rw-r--r-- | src/vnet/map/ip4_map_t.c | 898 |
1 files changed, 0 insertions, 898 deletions
diff --git a/src/vnet/map/ip4_map_t.c b/src/vnet/map/ip4_map_t.c deleted file mode 100644 index 0a1dc8f3212..00000000000 --- a/src/vnet/map/ip4_map_t.c +++ /dev/null @@ -1,898 +0,0 @@ -/* - * 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 "map.h" - -#include "../ip/ip_frag.h" -#include <vnet/ip/ip4_to_ip6.h> - -#define IP4_MAP_T_DUAL_LOOP 1 - -typedef enum -{ - IP4_MAPT_NEXT_MAPT_TCP_UDP, - IP4_MAPT_NEXT_MAPT_ICMP, - IP4_MAPT_NEXT_MAPT_FRAGMENTED, - IP4_MAPT_NEXT_DROP, - IP4_MAPT_N_NEXT -} ip4_mapt_next_t; - -typedef enum -{ - IP4_MAPT_ICMP_NEXT_IP6_LOOKUP, - IP4_MAPT_ICMP_NEXT_IP6_FRAG, - IP4_MAPT_ICMP_NEXT_DROP, - IP4_MAPT_ICMP_N_NEXT -} ip4_mapt_icmp_next_t; - -typedef enum -{ - IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP, - IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG, - IP4_MAPT_TCP_UDP_NEXT_DROP, - IP4_MAPT_TCP_UDP_N_NEXT -} ip4_mapt_tcp_udp_next_t; - -typedef enum -{ - IP4_MAPT_FRAGMENTED_NEXT_IP6_LOOKUP, - IP4_MAPT_FRAGMENTED_NEXT_IP6_FRAG, - IP4_MAPT_FRAGMENTED_NEXT_DROP, - IP4_MAPT_FRAGMENTED_N_NEXT -} ip4_mapt_fragmented_next_t; - -//This is used to pass information within the buffer data. -//Buffer structure being too small to contain big structures like this. -/* *INDENT-OFF* */ -typedef CLIB_PACKED (struct { - ip6_address_t daddr; - ip6_address_t saddr; - //IPv6 header + Fragmentation header will be here - //sizeof(ip6) + sizeof(ip_frag) - sizeof(ip4) - u8 unused[28]; -}) ip4_mapt_pseudo_header_t; -/* *INDENT-ON* */ - - -static_always_inline int -ip4_map_fragment_cache (ip4_header_t * ip4, u16 port) -{ - u32 *ignore = NULL; - map_ip4_reass_lock (); - map_ip4_reass_t *r = - map_ip4_reass_get (ip4->src_address.as_u32, ip4->dst_address.as_u32, - ip4->fragment_id, - (ip4->protocol == - IP_PROTOCOL_ICMP) ? IP_PROTOCOL_ICMP6 : ip4->protocol, - &ignore); - if (r) - r->port = port; - - map_ip4_reass_unlock (); - return !r; -} - -static_always_inline i32 -ip4_map_fragment_get_port (ip4_header_t * ip4) -{ - u32 *ignore = NULL; - map_ip4_reass_lock (); - map_ip4_reass_t *r = - map_ip4_reass_get (ip4->src_address.as_u32, ip4->dst_address.as_u32, - ip4->fragment_id, - (ip4->protocol == - IP_PROTOCOL_ICMP) ? IP_PROTOCOL_ICMP6 : ip4->protocol, - &ignore); - i32 ret = r ? r->port : -1; - map_ip4_reass_unlock (); - return ret; -} - -typedef struct -{ - map_domain_t *d; - u16 id; -} icmp_to_icmp6_ctx_t; - -static int -ip4_to_ip6_set_icmp_cb (ip4_header_t * ip4, ip6_header_t * ip6, void *arg) -{ - icmp_to_icmp6_ctx_t *ctx = arg; - map_main_t *mm = &map_main; - - if (mm->is_ce) - { - ip6->src_address.as_u64[0] = - map_get_pfx_net (ctx->d, ip4->src_address.as_u32, ctx->id); - ip6->src_address.as_u64[1] = - map_get_sfx_net (ctx->d, ip4->src_address.as_u32, ctx->id); - ip4_map_t_embedded_address (ctx->d, &ip6->dst_address, - &ip4->dst_address); - } - else - { - ip4_map_t_embedded_address (ctx->d, &ip6->src_address, - &ip4->src_address); - ip6->dst_address.as_u64[0] = - map_get_pfx_net (ctx->d, ip4->dst_address.as_u32, ctx->id); - ip6->dst_address.as_u64[1] = - map_get_sfx_net (ctx->d, ip4->dst_address.as_u32, ctx->id); - } - - return 0; -} - -static int -ip4_to_ip6_set_inner_icmp_cb (ip4_header_t * ip4, ip6_header_t * ip6, - void *arg) -{ - icmp_to_icmp6_ctx_t *ctx = arg; - map_main_t *mm = &map_main; - - if (mm->is_ce) - { - //Note that the destination address is within the domain - //while the source address is the one outside the domain - ip4_map_t_embedded_address (ctx->d, &ip6->src_address, - &ip4->src_address); - ip6->dst_address.as_u64[0] = - map_get_pfx_net (ctx->d, ip4->dst_address.as_u32, ctx->id); - ip6->dst_address.as_u64[1] = - map_get_sfx_net (ctx->d, ip4->dst_address.as_u32, ctx->id); - } - else - { - //Note that the source address is within the domain - //while the destination address is the one outside the domain - ip4_map_t_embedded_address (ctx->d, &ip6->dst_address, - &ip4->dst_address); - ip6->src_address.as_u64[0] = - map_get_pfx_net (ctx->d, ip4->src_address.as_u32, ctx->id); - ip6->src_address.as_u64[1] = - map_get_sfx_net (ctx->d, ip4->src_address.as_u32, ctx->id); - } - - return 0; -} - -static uword -ip4_map_t_icmp (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, next_index, *to_next, n_left_to_next; - vlib_node_runtime_t *error_node = - vlib_node_get_runtime (vm, ip4_map_t_icmp_node.index); - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - vlib_combined_counter_main_t *cm = map_main.domain_counters; - u32 thread_index = vlib_get_thread_index (); - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 pi0; - vlib_buffer_t *p0; - ip4_mapt_icmp_next_t next0; - u8 error0; - map_domain_t *d0; - u16 len0; - icmp_to_icmp6_ctx_t ctx0; - ip4_header_t *ip40; - icmp46_header_t *icmp0; - - next0 = IP4_MAPT_ICMP_NEXT_IP6_LOOKUP; - pi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next += 1; - n_left_to_next -= 1; - error0 = MAP_ERROR_NONE; - - p0 = vlib_get_buffer (vm, pi0); - vlib_buffer_advance (p0, sizeof (ip4_mapt_pseudo_header_t)); //The pseudo-header is not used - len0 = - clib_net_to_host_u16 (((ip4_header_t *) - vlib_buffer_get_current (p0))->length); - d0 = - pool_elt_at_index (map_main.domains, - vnet_buffer (p0)->map_t.map_domain_index); - - ip40 = vlib_buffer_get_current (p0); - icmp0 = (icmp46_header_t *) (ip40 + 1); - - ctx0.id = ip4_get_port (ip40, icmp0->type == ICMP6_echo_request); - ctx0.d = d0; - if (ctx0.id == 0) - { - // In case of 1:1 mapping, we don't care about the port - if (!(d0->ea_bits_len == 0 && d0->rules)) - { - error0 = MAP_ERROR_ICMP; - goto err0; - } - } - - if (icmp_to_icmp6 - (p0, ip4_to_ip6_set_icmp_cb, &ctx0, - ip4_to_ip6_set_inner_icmp_cb, &ctx0)) - { - error0 = MAP_ERROR_ICMP; - goto err0; - } - - if (vnet_buffer (p0)->map_t.mtu < p0->current_length) - { - vnet_buffer (p0)->ip_frag.header_offset = 0; - vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; - vnet_buffer (p0)->ip_frag.next_index = IP6_FRAG_NEXT_IP6_LOOKUP; - next0 = IP4_MAPT_ICMP_NEXT_IP6_FRAG; - } - err0: - if (PREDICT_TRUE (error0 == MAP_ERROR_NONE)) - { - vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX, - thread_index, - vnet_buffer (p0)-> - map_t.map_domain_index, 1, - len0); - } - else - { - next0 = IP4_MAPT_ICMP_NEXT_DROP; - } - p0->error = error_node->errors[error0]; - 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); - } - return frame->n_vectors; -} - -static int -ip4_to_ip6_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, void *ctx) -{ - ip4_mapt_pseudo_header_t *pheader = ctx; - - ip6->dst_address.as_u64[0] = pheader->daddr.as_u64[0]; - ip6->dst_address.as_u64[1] = pheader->daddr.as_u64[1]; - ip6->src_address.as_u64[0] = pheader->saddr.as_u64[0]; - ip6->src_address.as_u64[1] = pheader->saddr.as_u64[1]; - - return 0; -} - -static uword -ip4_map_t_fragmented (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, next_index, *to_next, n_left_to_next; - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - vlib_node_runtime_t *error_node = - vlib_node_get_runtime (vm, ip4_map_t_fragmented_node.index); - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 pi0; - vlib_buffer_t *p0; - ip4_mapt_pseudo_header_t *pheader0; - ip4_mapt_fragmented_next_t next0; - - next0 = IP4_MAPT_FRAGMENTED_NEXT_IP6_LOOKUP; - pi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next += 1; - n_left_to_next -= 1; - - p0 = vlib_get_buffer (vm, pi0); - - //Accessing pseudo header - pheader0 = vlib_buffer_get_current (p0); - vlib_buffer_advance (p0, sizeof (*pheader0)); - - if (ip4_to_ip6_fragmented (p0, ip4_to_ip6_set_cb, pheader0)) - { - p0->error = error_node->errors[MAP_ERROR_FRAGMENT_DROPPED]; - next0 = IP4_MAPT_FRAGMENTED_NEXT_DROP; - } - else - { - if (vnet_buffer (p0)->map_t.mtu < p0->current_length) - { - vnet_buffer (p0)->ip_frag.header_offset = 0; - vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; - vnet_buffer (p0)->ip_frag.next_index = - IP6_FRAG_NEXT_IP6_LOOKUP; - next0 = IP4_MAPT_FRAGMENTED_NEXT_IP6_FRAG; - } - } - - 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); - } - return frame->n_vectors; -} - -static uword -ip4_map_t_tcp_udp (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, next_index, *to_next, n_left_to_next; - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - vlib_node_runtime_t *error_node = - vlib_node_get_runtime (vm, ip4_map_t_tcp_udp_node.index); - - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - -#ifdef IP4_MAP_T_DUAL_LOOP - while (n_left_from >= 4 && n_left_to_next >= 2) - { - u32 pi0, pi1; - vlib_buffer_t *p0, *p1; - ip4_mapt_pseudo_header_t *pheader0, *pheader1; - ip4_mapt_tcp_udp_next_t next0, next1; - - 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 = IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP; - next1 = IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP; - p0 = vlib_get_buffer (vm, pi0); - p1 = vlib_get_buffer (vm, pi1); - - //Accessing pseudo header - pheader0 = vlib_buffer_get_current (p0); - pheader1 = vlib_buffer_get_current (p1); - vlib_buffer_advance (p0, sizeof (*pheader0)); - vlib_buffer_advance (p1, sizeof (*pheader1)); - - if (ip4_to_ip6_tcp_udp (p0, ip4_to_ip6_set_cb, pheader0)) - { - p0->error = error_node->errors[MAP_ERROR_UNKNOWN]; - next0 = IP4_MAPT_TCP_UDP_NEXT_DROP; - } - else - { - if (vnet_buffer (p0)->map_t.mtu < p0->current_length) - { - //Send to fragmentation node if necessary - vnet_buffer (p0)->ip_frag.header_offset = 0; - vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; - vnet_buffer (p0)->ip_frag.next_index = - IP6_FRAG_NEXT_IP6_LOOKUP; - next0 = IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG; - } - } - - if (ip4_to_ip6_tcp_udp (p1, ip4_to_ip6_set_cb, pheader1)) - { - p1->error = error_node->errors[MAP_ERROR_UNKNOWN]; - next1 = IP4_MAPT_TCP_UDP_NEXT_DROP; - } - else - { - if (vnet_buffer (p1)->map_t.mtu < p1->current_length) - { - //Send to fragmentation node if necessary - vnet_buffer (p1)->ip_frag.header_offset = 0; - vnet_buffer (p1)->ip_frag.mtu = vnet_buffer (p1)->map_t.mtu; - vnet_buffer (p1)->ip_frag.next_index = - IP6_FRAG_NEXT_IP6_LOOKUP; - next1 = IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG; - } - } - - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, - to_next, n_left_to_next, pi0, pi1, - next0, next1); - } -#endif - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 pi0; - vlib_buffer_t *p0; - ip4_mapt_pseudo_header_t *pheader0; - ip4_mapt_tcp_udp_next_t next0; - - pi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next += 1; - n_left_to_next -= 1; - - next0 = IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP; - p0 = vlib_get_buffer (vm, pi0); - - //Accessing pseudo header - pheader0 = vlib_buffer_get_current (p0); - vlib_buffer_advance (p0, sizeof (*pheader0)); - - if (ip4_to_ip6_tcp_udp (p0, ip4_to_ip6_set_cb, pheader0)) - { - p0->error = error_node->errors[MAP_ERROR_UNKNOWN]; - next0 = IP4_MAPT_TCP_UDP_NEXT_DROP; - } - else - { - if (vnet_buffer (p0)->map_t.mtu < p0->current_length) - { - //Send to fragmentation node if necessary - vnet_buffer (p0)->ip_frag.header_offset = 0; - vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu; - vnet_buffer (p0)->ip_frag.next_index = - IP6_FRAG_NEXT_IP6_LOOKUP; - next0 = IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG; - } - } - 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); - } - - return frame->n_vectors; -} - -static_always_inline void -ip4_map_t_classify (vlib_buffer_t * p0, map_domain_t * d0, - ip4_header_t * ip40, u16 ip4_len0, i32 * dst_port0, - u8 * error0, ip4_mapt_next_t * next0) -{ - map_main_t *mm = &map_main; - u32 port_offset; - - if (mm->is_ce) - port_offset = 0; - else - port_offset = 2; - - if (PREDICT_FALSE (ip4_get_fragment_offset (ip40))) - { - *next0 = IP4_MAPT_NEXT_MAPT_FRAGMENTED; - if (d0->ea_bits_len == 0 && d0->rules) - { - *dst_port0 = 0; - } - else - { - *dst_port0 = ip4_map_fragment_get_port (ip40); - *error0 = (*dst_port0 == -1) ? MAP_ERROR_FRAGMENT_MEMORY : *error0; - } - } - else if (PREDICT_TRUE (ip40->protocol == IP_PROTOCOL_TCP)) - { - vnet_buffer (p0)->map_t.checksum_offset = 36; - *next0 = IP4_MAPT_NEXT_MAPT_TCP_UDP; - *error0 = ip4_len0 < 40 ? MAP_ERROR_MALFORMED : *error0; - *dst_port0 = - (i32) * ((u16 *) u8_ptr_add (ip40, sizeof (*ip40) + port_offset)); - } - else if (PREDICT_TRUE (ip40->protocol == IP_PROTOCOL_UDP)) - { - vnet_buffer (p0)->map_t.checksum_offset = 26; - *next0 = IP4_MAPT_NEXT_MAPT_TCP_UDP; - *error0 = ip4_len0 < 28 ? MAP_ERROR_MALFORMED : *error0; - *dst_port0 = - (i32) * ((u16 *) u8_ptr_add (ip40, sizeof (*ip40) + port_offset)); - } - else if (ip40->protocol == IP_PROTOCOL_ICMP) - { - *next0 = IP4_MAPT_NEXT_MAPT_ICMP; - if (d0->ea_bits_len == 0 && d0->rules) - *dst_port0 = 0; - else if (((icmp46_header_t *) u8_ptr_add (ip40, sizeof (*ip40)))->code - == ICMP4_echo_reply - || ((icmp46_header_t *) - u8_ptr_add (ip40, - sizeof (*ip40)))->code == ICMP4_echo_request) - *dst_port0 = (i32) * ((u16 *) u8_ptr_add (ip40, sizeof (*ip40) + 6)); - } - else - { - *error0 = MAP_ERROR_BAD_PROTOCOL; - } -} - -static uword -ip4_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 n_left_from, *from, next_index, *to_next, n_left_to_next; - vlib_node_runtime_t *error_node = - vlib_node_get_runtime (vm, ip4_map_t_node.index); - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - map_main_t *mm = &map_main; - vlib_combined_counter_main_t *cm = map_main.domain_counters; - u32 thread_index = vlib_get_thread_index (); - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - -#ifdef IP4_MAP_T_DUAL_LOOP - while (n_left_from >= 4 && n_left_to_next >= 2) - { - u32 pi0, pi1; - vlib_buffer_t *p0, *p1; - ip4_header_t *ip40, *ip41; - map_domain_t *d0, *d1; - ip4_mapt_next_t next0 = 0, next1 = 0; - u16 ip4_len0, ip4_len1; - u8 error0, error1; - i32 map_port0, map_port1; - ip4_mapt_pseudo_header_t *pheader0, *pheader1; - - 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; - error0 = MAP_ERROR_NONE; - error1 = MAP_ERROR_NONE; - - p0 = vlib_get_buffer (vm, pi0); - p1 = vlib_get_buffer (vm, pi1); - ip40 = vlib_buffer_get_current (p0); - ip41 = vlib_buffer_get_current (p1); - ip4_len0 = clib_host_to_net_u16 (ip40->length); - ip4_len1 = clib_host_to_net_u16 (ip41->length); - - if (PREDICT_FALSE (p0->current_length < ip4_len0 || - ip40->ip_version_and_header_length != 0x45)) - { - error0 = MAP_ERROR_UNKNOWN; - next0 = IP4_MAPT_NEXT_DROP; - } - - if (PREDICT_FALSE (p1->current_length < ip4_len1 || - ip41->ip_version_and_header_length != 0x45)) - { - error1 = MAP_ERROR_UNKNOWN; - next1 = IP4_MAPT_NEXT_DROP; - } - - vnet_buffer (p0)->map_t.map_domain_index = - vnet_buffer (p0)->ip.adj_index[VLIB_TX]; - d0 = ip4_map_get_domain (vnet_buffer (p0)->map_t.map_domain_index); - vnet_buffer (p1)->map_t.map_domain_index = - vnet_buffer (p1)->ip.adj_index[VLIB_TX]; - d1 = ip4_map_get_domain (vnet_buffer (p1)->map_t.map_domain_index); - - vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0; - vnet_buffer (p1)->map_t.mtu = d1->mtu ? d1->mtu : ~0; - - map_port0 = -1; - map_port1 = -1; - - ip4_map_t_classify (p0, d0, ip40, ip4_len0, &map_port0, &error0, - &next0); - ip4_map_t_classify (p1, d1, ip41, ip4_len1, &map_port1, &error1, - &next1); - - //Add MAP-T pseudo header in front of the packet - vlib_buffer_advance (p0, -sizeof (*pheader0)); - vlib_buffer_advance (p1, -sizeof (*pheader1)); - pheader0 = vlib_buffer_get_current (p0); - pheader1 = vlib_buffer_get_current (p1); - - //Save addresses within the packet - if (mm->is_ce) - { - ip4_map_t_embedded_address (d0, &pheader0->daddr, - &ip40->dst_address); - ip4_map_t_embedded_address (d1, &pheader1->daddr, - &ip41->dst_address); - pheader0->saddr.as_u64[0] = - map_get_pfx_net (d0, ip40->src_address.as_u32, - (u16) map_port0); - pheader0->saddr.as_u64[1] = - map_get_sfx_net (d0, ip40->src_address.as_u32, - (u16) map_port0); - pheader1->saddr.as_u64[0] = - map_get_pfx_net (d1, ip41->src_address.as_u32, - (u16) map_port1); - pheader1->saddr.as_u64[1] = - map_get_sfx_net (d1, ip41->src_address.as_u32, - (u16) map_port1); - } - else - { - ip4_map_t_embedded_address (d0, &pheader0->saddr, - &ip40->src_address); - ip4_map_t_embedded_address (d1, &pheader1->saddr, - &ip41->src_address); - pheader0->daddr.as_u64[0] = - map_get_pfx_net (d0, ip40->dst_address.as_u32, - (u16) map_port0); - pheader0->daddr.as_u64[1] = - map_get_sfx_net (d0, ip40->dst_address.as_u32, - (u16) map_port0); - pheader1->daddr.as_u64[0] = - map_get_pfx_net (d1, ip41->dst_address.as_u32, - (u16) map_port1); - pheader1->daddr.as_u64[1] = - map_get_sfx_net (d1, ip41->dst_address.as_u32, - (u16) map_port1); - } - - if (PREDICT_FALSE - (ip4_is_first_fragment (ip40) && (map_port0 != -1) - && (d0->ea_bits_len != 0 || !d0->rules) - && ip4_map_fragment_cache (ip40, map_port0))) - { - error0 = MAP_ERROR_FRAGMENT_MEMORY; - } - - if (PREDICT_FALSE - (ip4_is_first_fragment (ip41) && (map_port1 != -1) - && (d1->ea_bits_len != 0 || !d1->rules) - && ip4_map_fragment_cache (ip41, map_port1))) - { - error1 = MAP_ERROR_FRAGMENT_MEMORY; - } - - if (PREDICT_TRUE - (error0 == MAP_ERROR_NONE && next0 != IP4_MAPT_NEXT_MAPT_ICMP)) - { - vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX, - thread_index, - vnet_buffer (p0)-> - map_t.map_domain_index, 1, - clib_net_to_host_u16 - (ip40->length)); - } - - if (PREDICT_TRUE - (error1 == MAP_ERROR_NONE && next1 != IP4_MAPT_NEXT_MAPT_ICMP)) - { - vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX, - thread_index, - vnet_buffer (p1)-> - map_t.map_domain_index, 1, - clib_net_to_host_u16 - (ip41->length)); - } - - next0 = (error0 != MAP_ERROR_NONE) ? IP4_MAPT_NEXT_DROP : next0; - next1 = (error1 != MAP_ERROR_NONE) ? IP4_MAPT_NEXT_DROP : next1; - p0->error = error_node->errors[error0]; - p1->error = error_node->errors[error1]; - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, - n_left_to_next, pi0, pi1, next0, - next1); - } -#endif - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 pi0; - vlib_buffer_t *p0; - ip4_header_t *ip40; - map_domain_t *d0; - ip4_mapt_next_t next0; - u16 ip4_len0; - u8 error0; - i32 map_port0; - ip4_mapt_pseudo_header_t *pheader0; - - pi0 = to_next[0] = from[0]; - from += 1; - n_left_from -= 1; - to_next += 1; - n_left_to_next -= 1; - error0 = MAP_ERROR_NONE; - - p0 = vlib_get_buffer (vm, pi0); - ip40 = vlib_buffer_get_current (p0); - ip4_len0 = clib_host_to_net_u16 (ip40->length); - if (PREDICT_FALSE (p0->current_length < ip4_len0 || - ip40->ip_version_and_header_length != 0x45)) - { - error0 = MAP_ERROR_UNKNOWN; - next0 = IP4_MAPT_NEXT_DROP; - } - - vnet_buffer (p0)->map_t.map_domain_index = - vnet_buffer (p0)->ip.adj_index[VLIB_TX]; - d0 = ip4_map_get_domain (vnet_buffer (p0)->map_t.map_domain_index); - - vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0; - - map_port0 = -1; - ip4_map_t_classify (p0, d0, ip40, ip4_len0, &map_port0, &error0, - &next0); - - //Add MAP-T pseudo header in front of the packet - vlib_buffer_advance (p0, -sizeof (*pheader0)); - pheader0 = vlib_buffer_get_current (p0); - - //Save addresses within the packet - if (mm->is_ce) - { - ip4_map_t_embedded_address (d0, &pheader0->daddr, - &ip40->dst_address); - pheader0->saddr.as_u64[0] = - map_get_pfx_net (d0, ip40->src_address.as_u32, - (u16) map_port0); - pheader0->saddr.as_u64[1] = - map_get_sfx_net (d0, ip40->src_address.as_u32, - (u16) map_port0); - } - else - { - ip4_map_t_embedded_address (d0, &pheader0->saddr, - &ip40->src_address); - pheader0->daddr.as_u64[0] = - map_get_pfx_net (d0, ip40->dst_address.as_u32, - (u16) map_port0); - pheader0->daddr.as_u64[1] = - map_get_sfx_net (d0, ip40->dst_address.as_u32, - (u16) map_port0); - } - - //It is important to cache at this stage because the result might be necessary - //for packets within the same vector. - //Actually, this approach even provides some limited out-of-order fragments support - if (PREDICT_FALSE - (ip4_is_first_fragment (ip40) && (map_port0 != -1) - && (d0->ea_bits_len != 0 || !d0->rules) - && ip4_map_fragment_cache (ip40, map_port0))) - { - error0 = MAP_ERROR_UNKNOWN; - } - - if (PREDICT_TRUE - (error0 == MAP_ERROR_NONE && next0 != IP4_MAPT_NEXT_MAPT_ICMP)) - { - vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_TX, - thread_index, - vnet_buffer (p0)-> - map_t.map_domain_index, 1, - clib_net_to_host_u16 - (ip40->length)); - } - - next0 = (error0 != MAP_ERROR_NONE) ? IP4_MAPT_NEXT_DROP : next0; - p0->error = error_node->errors[error0]; - 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); - } - return frame->n_vectors; -} - -static char *map_t_error_strings[] = { -#define _(sym,string) string, - foreach_map_error -#undef _ -}; - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(ip4_map_t_fragmented_node) = { - .function = ip4_map_t_fragmented, - .name = "ip4-map-t-fragmented", - .vector_size = sizeof(u32), - .format_trace = format_map_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = MAP_N_ERROR, - .error_strings = map_t_error_strings, - - .n_next_nodes = IP4_MAPT_FRAGMENTED_N_NEXT, - .next_nodes = { - [IP4_MAPT_FRAGMENTED_NEXT_IP6_LOOKUP] = "ip6-lookup", - [IP4_MAPT_FRAGMENTED_NEXT_IP6_FRAG] = IP6_FRAG_NODE_NAME, - [IP4_MAPT_FRAGMENTED_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(ip4_map_t_icmp_node) = { - .function = ip4_map_t_icmp, - .name = "ip4-map-t-icmp", - .vector_size = sizeof(u32), - .format_trace = format_map_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = MAP_N_ERROR, - .error_strings = map_t_error_strings, - - .n_next_nodes = IP4_MAPT_ICMP_N_NEXT, - .next_nodes = { - [IP4_MAPT_ICMP_NEXT_IP6_LOOKUP] = "ip6-lookup", - [IP4_MAPT_ICMP_NEXT_IP6_FRAG] = IP6_FRAG_NODE_NAME, - [IP4_MAPT_ICMP_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(ip4_map_t_tcp_udp_node) = { - .function = ip4_map_t_tcp_udp, - .name = "ip4-map-t-tcp-udp", - .vector_size = sizeof(u32), - .format_trace = format_map_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = MAP_N_ERROR, - .error_strings = map_t_error_strings, - - .n_next_nodes = IP4_MAPT_TCP_UDP_N_NEXT, - .next_nodes = { - [IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP] = "ip6-lookup", - [IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG] = IP6_FRAG_NODE_NAME, - [IP4_MAPT_TCP_UDP_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE(ip4_map_t_node) = { - .function = ip4_map_t, - .name = "ip4-map-t", - .vector_size = sizeof(u32), - .format_trace = format_map_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = MAP_N_ERROR, - .error_strings = map_t_error_strings, - - .n_next_nodes = IP4_MAPT_N_NEXT, - .next_nodes = { - [IP4_MAPT_NEXT_MAPT_TCP_UDP] = "ip4-map-t-tcp-udp", - [IP4_MAPT_NEXT_MAPT_ICMP] = "ip4-map-t-icmp", - [IP4_MAPT_NEXT_MAPT_FRAGMENTED] = "ip4-map-t-fragmented", - [IP4_MAPT_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |