diff options
Diffstat (limited to 'src/vnet/geneve/encap.c')
-rw-r--r-- | src/vnet/geneve/encap.c | 581 |
1 files changed, 0 insertions, 581 deletions
diff --git a/src/vnet/geneve/encap.c b/src/vnet/geneve/encap.c deleted file mode 100644 index 2859a9ae652..00000000000 --- a/src/vnet/geneve/encap.c +++ /dev/null @@ -1,581 +0,0 @@ -/* - * Copyright (c) 2017 SUSE LLC. - * 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 <vppinfra/error.h> -#include <vppinfra/hash.h> -#include <vnet/vnet.h> -#include <vnet/ip/ip.h> -#include <vnet/ethernet/ethernet.h> -#include <vnet/geneve/geneve.h> - -/* Statistics (not all errors) */ -#define foreach_geneve_encap_error \ -_(ENCAPSULATED, "good packets encapsulated") - -static char *geneve_encap_error_strings[] = { -#define _(sym,string) string, - foreach_geneve_encap_error -#undef _ -}; - -typedef enum -{ -#define _(sym,str) GENEVE_ENCAP_ERROR_##sym, - foreach_geneve_encap_error -#undef _ - GENEVE_ENCAP_N_ERROR, -} geneve_encap_error_t; - -typedef enum -{ - GENEVE_ENCAP_NEXT_DROP, - GENEVE_ENCAP_N_NEXT, -} geneve_encap_next_t; - -#define foreach_fixed_header4_offset \ - _(0) _(1) _(2) _(3) - -#define foreach_fixed_header6_offset \ - _(0) _(1) _(2) _(3) _(4) _(5) _(6) - -always_inline uword -geneve_encap_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame, u32 is_ip4) -{ - u32 n_left_from, next_index, *from, *to_next; - geneve_main_t *vxm = &geneve_main; - vnet_main_t *vnm = vxm->vnet_main; - vnet_interface_main_t *im = &vnm->interface_main; - u32 pkts_encapsulated = 0; - u16 old_l0 = 0, old_l1 = 0; - u32 thread_index = vm->thread_index; - u32 stats_sw_if_index, stats_n_packets, stats_n_bytes; - u32 sw_if_index0 = ~0, sw_if_index1 = ~0; - u32 next0 = 0, next1 = 0; - vnet_hw_interface_t *hi0, *hi1; - geneve_tunnel_t *t0 = NULL, *t1 = NULL; - vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; - - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - vlib_get_buffers (vm, from, bufs, n_left_from); - - 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; - u32 flow_hash0, flow_hash1; - u32 len0, len1; - ip4_header_t *ip4_0, *ip4_1; - ip6_header_t *ip6_0, *ip6_1; - udp_header_t *udp0, *udp1; - u64 *copy_src0, *copy_dst0; - u64 *copy_src1, *copy_dst1; - u32 *copy_src_last0, *copy_dst_last0; - u32 *copy_src_last1, *copy_dst_last1; - u16 new_l0, new_l1; - ip_csum_t sum0, sum1; - - /* Prefetch next iteration. */ - { - vlib_prefetch_buffer_header (b[2], LOAD); - vlib_prefetch_buffer_header (b[3], LOAD); - - CLIB_PREFETCH (b[2]->data - CLIB_CACHE_LINE_BYTES, - 2 * CLIB_CACHE_LINE_BYTES, LOAD); - CLIB_PREFETCH (b[3]->data - CLIB_CACHE_LINE_BYTES, - 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; - - flow_hash0 = vnet_l2_compute_flow_hash (b[0]); - flow_hash1 = vnet_l2_compute_flow_hash (b[1]); - - - /* Get next node index and adj index from tunnel next_dpo */ - if (sw_if_index0 != vnet_buffer (b[0])->sw_if_index[VLIB_TX]) - { - sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; - 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 be set to drop */ - next0 = t0->next_dpo.dpoi_next_node; - } - - ALWAYS_ASSERT (t0 != NULL); - - vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = t0->next_dpo.dpoi_index; - - /* Get next node index and adj index from tunnel next_dpo */ - if (sw_if_index1 != vnet_buffer (b[1])->sw_if_index[VLIB_TX]) - { - sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_TX]; - 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 be set to drop */ - next1 = t1->next_dpo.dpoi_next_node; - } - - ALWAYS_ASSERT (t1 != NULL); - - vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = t1->next_dpo.dpoi_index; - - /* Apply the rewrite string. $$$$ vnet_rewrite? */ - vlib_buffer_advance (b[0], -(word) _vec_len (t0->rewrite)); - vlib_buffer_advance (b[1], -(word) _vec_len (t1->rewrite)); - - if (is_ip4) - { - u8 ip4_geneve_base_header_len = - sizeof (ip4_header_t) + sizeof (udp_header_t) + - GENEVE_BASE_HEADER_LENGTH; - u8 ip4_geneve_header_total_len0 = ip4_geneve_base_header_len; - u8 ip4_geneve_header_total_len1 = ip4_geneve_base_header_len; -#if SUPPORT_OPTIONS_HEADER==1 - ip4_geneve_header_total_len0 += t0->options_len; - ip4_geneve_header_total_len1 += t1->options_len; -#endif - ASSERT (vec_len (t0->rewrite) == ip4_geneve_header_total_len0); - ASSERT (vec_len (t1->rewrite) == ip4_geneve_header_total_len1); - - ip4_0 = vlib_buffer_get_current (b[0]); - ip4_1 = vlib_buffer_get_current (b[1]); - - /* Copy the fixed header */ - copy_dst0 = (u64 *) ip4_0; - copy_src0 = (u64 *) t0->rewrite; - copy_dst1 = (u64 *) ip4_1; - copy_src1 = (u64 *) t1->rewrite; - /* Copy first 32 octets 8-bytes at a time */ -#define _(offs) copy_dst0[offs] = copy_src0[offs]; - foreach_fixed_header4_offset; -#undef _ -#define _(offs) copy_dst1[offs] = copy_src1[offs]; - foreach_fixed_header4_offset; -#undef _ - /* Last 4 octets. Hopefully gcc will be our friend */ - copy_dst_last0 = (u32 *) (©_dst0[4]); - copy_src_last0 = (u32 *) (©_src0[4]); - copy_dst_last0[0] = copy_src_last0[0]; - copy_dst_last1 = (u32 *) (©_dst1[4]); - copy_src_last1 = (u32 *) (©_src1[4]); - copy_dst_last1[0] = copy_src_last1[0]; - - /* Fix the IP4 checksum and length */ - sum0 = ip4_0->checksum; - new_l0 = /* old_l0 always 0, see the rewrite setup */ - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[0])); - sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t, - length /* changed member */ ); - ip4_0->checksum = ip_csum_fold (sum0); - ip4_0->length = new_l0; - sum1 = ip4_1->checksum; - new_l1 = /* old_l1 always 0, see the rewrite setup */ - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[1])); - sum1 = ip_csum_update (sum1, old_l1, new_l1, ip4_header_t, - length /* changed member */ ); - ip4_1->checksum = ip_csum_fold (sum1); - ip4_1->length = new_l1; - - /* Fix UDP length and set source port */ - udp0 = (udp_header_t *) (ip4_0 + 1); - new_l0 = - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[0]) - - sizeof (*ip4_0)); - udp0->length = new_l0; - udp0->src_port = flow_hash0; - udp1 = (udp_header_t *) (ip4_1 + 1); - new_l1 = - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[1]) - - sizeof (*ip4_1)); - udp1->length = new_l1; - udp1->src_port = flow_hash1; - } - else /* ipv6 */ - { - int bogus = 0; - - u8 ip6_geneve_base_header_len = - sizeof (ip6_header_t) + sizeof (udp_header_t) + - GENEVE_BASE_HEADER_LENGTH; - u8 ip6_geneve_header_total_len0 = ip6_geneve_base_header_len; - u8 ip6_geneve_header_total_len1 = ip6_geneve_base_header_len; -#if SUPPORT_OPTIONS_HEADER==1 - ip6_geneve_header_total_len0 += t0->options_len; - ip6_geneve_header_total_len1 += t1->options_len; -#endif - ASSERT (vec_len (t0->rewrite) == ip6_geneve_header_total_len0); - ASSERT (vec_len (t1->rewrite) == ip6_geneve_header_total_len1); - - ip6_0 = vlib_buffer_get_current (b[0]); - ip6_1 = vlib_buffer_get_current (b[1]); - - /* Copy the fixed header */ - copy_dst0 = (u64 *) ip6_0; - copy_src0 = (u64 *) t0->rewrite; - copy_dst1 = (u64 *) ip6_1; - copy_src1 = (u64 *) t1->rewrite; - /* Copy first 56 (ip6) octets 8-bytes at a time */ -#define _(offs) copy_dst0[offs] = copy_src0[offs]; - foreach_fixed_header6_offset; -#undef _ -#define _(offs) copy_dst1[offs] = copy_src1[offs]; - foreach_fixed_header6_offset; -#undef _ - /* Fix IP6 payload length */ - new_l0 = - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[0]) - - sizeof (*ip6_0)); - ip6_0->payload_length = new_l0; - new_l1 = - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[1]) - - sizeof (*ip6_1)); - ip6_1->payload_length = new_l1; - - /* Fix UDP length and set source port */ - udp0 = (udp_header_t *) (ip6_0 + 1); - udp0->length = new_l0; - udp0->src_port = flow_hash0; - udp1 = (udp_header_t *) (ip6_1 + 1); - udp1->length = new_l1; - udp1->src_port = flow_hash1; - - /* IPv6 UDP checksum is mandatory */ - udp0->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b[0], - ip6_0, - &bogus); - ASSERT (bogus == 0); - if (udp0->checksum == 0) - udp0->checksum = 0xffff; - udp1->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b[1], - ip6_1, - &bogus); - ASSERT (bogus == 0); - if (udp1->checksum == 0) - udp1->checksum = 0xffff; - } - - pkts_encapsulated += 2; - len0 = vlib_buffer_length_in_chain (vm, b[0]); - len1 = vlib_buffer_length_in_chain (vm, b[1]); - stats_n_packets += 2; - stats_n_bytes += len0 + len1; - - /* save inner packet flow_hash for load-balance node */ - vnet_buffer (b[0])->ip.flow_hash = flow_hash0; - vnet_buffer (b[1])->ip.flow_hash = flow_hash1; - - /* Batch stats increment on the same geneve tunnel so counter is not - incremented per packet. Note stats are still incremented for deleted - and admin-down tunnel where packets are dropped. It is not worthwhile - to check for this rare case and affect normal path performance. */ - if (PREDICT_FALSE ((sw_if_index0 != stats_sw_if_index) || - (sw_if_index1 != stats_sw_if_index))) - { - stats_n_packets -= 2; - stats_n_bytes -= len0 + len1; - if (sw_if_index0 == sw_if_index1) - { - if (stats_n_packets) - vlib_increment_combined_counter - (im->combined_sw_if_counters + - VNET_INTERFACE_COUNTER_TX, thread_index, - stats_sw_if_index, stats_n_packets, stats_n_bytes); - stats_sw_if_index = sw_if_index0; - stats_n_packets = 2; - stats_n_bytes = len0 + len1; - } - else - { - vlib_increment_combined_counter - (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, - thread_index, sw_if_index0, 1, len0); - vlib_increment_combined_counter - (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, - thread_index, sw_if_index1, 1, len1); - } - } - - if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) - { - geneve_encap_trace_t *tr = - vlib_add_trace (vm, node, b[0], sizeof (*tr)); - tr->tunnel_index = t0 - vxm->tunnels; - tr->vni = t0->vni; - } - - if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED)) - { - geneve_encap_trace_t *tr = - vlib_add_trace (vm, node, b[1], sizeof (*tr)); - tr->tunnel_index = t1 - vxm->tunnels; - tr->vni = t1->vni; - } - b += 2; - - 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; - u32 flow_hash0; - u32 len0; - ip4_header_t *ip4_0; - ip6_header_t *ip6_0; - udp_header_t *udp0; - u64 *copy_src0, *copy_dst0; - u32 *copy_src_last0, *copy_dst_last0; - u16 new_l0; - ip_csum_t sum0; - - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - flow_hash0 = vnet_l2_compute_flow_hash (b[0]); - - /* Get next node index and adj index from tunnel next_dpo */ - if (sw_if_index0 != vnet_buffer (b[0])->sw_if_index[VLIB_TX]) - { - sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; - 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 be set to drop */ - next0 = t0->next_dpo.dpoi_next_node; - } - - ALWAYS_ASSERT (t0 != NULL); - - vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = t0->next_dpo.dpoi_index; - - /* Apply the rewrite string. $$$$ vnet_rewrite? */ - vlib_buffer_advance (b[0], -(word) _vec_len (t0->rewrite)); - - if (is_ip4) - { - u8 ip4_geneve_base_header_len = - sizeof (ip4_header_t) + sizeof (udp_header_t) + - GENEVE_BASE_HEADER_LENGTH; - u8 ip4_geneve_header_total_len0 = ip4_geneve_base_header_len; -#if SUPPORT_OPTIONS_HEADER==1 - ip4_geneve_header_total_len0 += t0->options_len; -#endif - ASSERT (vec_len (t0->rewrite) == ip4_geneve_header_total_len0); - - ip4_0 = vlib_buffer_get_current (b[0]); - - /* Copy the fixed header */ - copy_dst0 = (u64 *) ip4_0; - copy_src0 = (u64 *) t0->rewrite; - /* Copy first 32 octets 8-bytes at a time */ -#define _(offs) copy_dst0[offs] = copy_src0[offs]; - foreach_fixed_header4_offset; -#undef _ - /* Last 4 octets. Hopefully gcc will be our friend */ - copy_dst_last0 = (u32 *) (©_dst0[4]); - copy_src_last0 = (u32 *) (©_src0[4]); - copy_dst_last0[0] = copy_src_last0[0]; - - /* Fix the IP4 checksum and length */ - sum0 = ip4_0->checksum; - new_l0 = /* old_l0 always 0, see the rewrite setup */ - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[0])); - sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t, - length /* changed member */ ); - ip4_0->checksum = ip_csum_fold (sum0); - ip4_0->length = new_l0; - - /* Fix UDP length and set source port */ - udp0 = (udp_header_t *) (ip4_0 + 1); - new_l0 = - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[0]) - - sizeof (*ip4_0)); - udp0->length = new_l0; - udp0->src_port = flow_hash0; - } - - else /* ip6 path */ - { - int bogus = 0; - - u8 ip6_geneve_base_header_len = - sizeof (ip6_header_t) + sizeof (udp_header_t) + - GENEVE_BASE_HEADER_LENGTH; - u8 ip6_geneve_header_total_len0 = ip6_geneve_base_header_len; -#if SUPPORT_OPTIONS_HEADER==1 - ip6_geneve_header_total_len0 += t0->options_len; -#endif - ASSERT (vec_len (t0->rewrite) == ip6_geneve_header_total_len0); - - ip6_0 = vlib_buffer_get_current (b[0]); - /* Copy the fixed header */ - copy_dst0 = (u64 *) ip6_0; - copy_src0 = (u64 *) t0->rewrite; - /* Copy first 56 (ip6) octets 8-bytes at a time */ -#define _(offs) copy_dst0[offs] = copy_src0[offs]; - foreach_fixed_header6_offset; -#undef _ - /* Fix IP6 payload length */ - new_l0 = - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[0]) - - sizeof (*ip6_0)); - ip6_0->payload_length = new_l0; - - /* Fix UDP length and set source port */ - udp0 = (udp_header_t *) (ip6_0 + 1); - udp0->length = new_l0; - udp0->src_port = flow_hash0; - - /* IPv6 UDP checksum is mandatory */ - udp0->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b[0], - ip6_0, - &bogus); - ASSERT (bogus == 0); - if (udp0->checksum == 0) - udp0->checksum = 0xffff; - } - - pkts_encapsulated++; - len0 = vlib_buffer_length_in_chain (vm, b[0]); - stats_n_packets += 1; - stats_n_bytes += len0; - - /* save inner packet flow_hash for load-balance node */ - vnet_buffer (b[0])->ip.flow_hash = flow_hash0; - - /* Batch stats increment on the same geneve tunnel so counter is not - incremented per packet. Note stats are still incremented for deleted - and admin-down tunnel where packets are dropped. It is not worthwhile - to check for this rare case and affect normal path performance. */ - 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_TX, - thread_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; - } - - if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) - { - geneve_encap_trace_t *tr = - vlib_add_trace (vm, node, b[0], sizeof (*tr)); - tr->tunnel_index = t0 - vxm->tunnels; - tr->vni = t0->vni; - } - b += 1; - - 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); - } - - /* Do we still need this now that tunnel tx stats is kept? */ - vlib_node_increment_counter (vm, node->node_index, - GENEVE_ENCAP_ERROR_ENCAPSULATED, - pkts_encapsulated); - - /* Increment any remaining batch stats */ - if (stats_n_packets) - { - vlib_increment_combined_counter - (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, - thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); - node->runtime_data[0] = stats_sw_if_index; - } - - return from_frame->n_vectors; -} - -VLIB_NODE_FN (geneve4_encap_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return geneve_encap_inline (vm, node, from_frame, /* is_ip4 */ 1); -} - -VLIB_NODE_FN (geneve6_encap_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return geneve_encap_inline (vm, node, from_frame, /* is_ip4 */ 0); -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (geneve4_encap_node) = { - .name = "geneve4-encap", - .vector_size = sizeof (u32), - .format_trace = format_geneve_encap_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN (geneve_encap_error_strings), - .error_strings = geneve_encap_error_strings, - .n_next_nodes = GENEVE_ENCAP_N_NEXT, - .next_nodes = { - [GENEVE_ENCAP_NEXT_DROP] = "error-drop", - }, -}; - -VLIB_REGISTER_NODE (geneve6_encap_node) = { - .name = "geneve6-encap", - .vector_size = sizeof (u32), - .format_trace = format_geneve_encap_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - .n_errors = ARRAY_LEN (geneve_encap_error_strings), - .error_strings = geneve_encap_error_strings, - .n_next_nodes = GENEVE_ENCAP_N_NEXT, - .next_nodes = { - [GENEVE_ENCAP_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |