diff options
Diffstat (limited to 'src/vnet/ipsec/ipsec_handoff.c')
| -rw-r--r-- | src/vnet/ipsec/ipsec_handoff.c | 450 |
1 files changed, 450 insertions, 0 deletions
diff --git a/src/vnet/ipsec/ipsec_handoff.c b/src/vnet/ipsec/ipsec_handoff.c new file mode 100644 index 00000000000..4446f1e523a --- /dev/null +++ b/src/vnet/ipsec/ipsec_handoff.c @@ -0,0 +1,450 @@ +/* + * esp_encrypt.c : IPSec ESP encrypt node + * + * 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 <vnet/ipsec/ipsec.h> +#include <vnet/ipsec/ipsec_sa.h> + +#define foreach_ipsec_handoff_error \ +_(CONGESTION_DROP, "congestion drop") + +typedef enum +{ +#define _(sym,str) IPSEC_HANDOFF_ERROR_##sym, + foreach_ipsec_handoff_error +#undef _ + NAT44_HANDOFF_N_ERROR, +} ipsec_handoff_error_t; + +static char *ipsec_handoff_error_strings[] = { +#define _(sym,string) string, + foreach_ipsec_handoff_error +#undef _ +}; + +typedef struct ipsec_handoff_trace_t_ +{ + u32 next_worker_index; +} ipsec_handoff_trace_t; + +static u8 * +format_ipsec_handoff_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 *); + ipsec_handoff_trace_t *t = va_arg (*args, ipsec_handoff_trace_t *); + + s = format (s, "next-worker %d", t->next_worker_index); + + return s; +} + +/* do worker handoff based on thread_index in NAT HA protcol header */ +static_always_inline uword +ipsec_handoff (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame, u32 fq_index, bool is_enc) +{ + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; + u16 thread_indices[VLIB_FRAME_SIZE], *ti; + u32 n_enq, n_left_from, *from; + ipsec_main_t *im; + + im = &ipsec_main; + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + vlib_get_buffers (vm, from, bufs, n_left_from); + + b = bufs; + ti = thread_indices; + + while (n_left_from >= 4) + { + ipsec_sa_t *sa0, *sa1, *sa2, *sa3; + u32 sai0, sai1, sai2, sai3; + + /* Prefetch next iteration. */ + if (n_left_from >= 12) + { + vlib_prefetch_buffer_header (b[8], LOAD); + vlib_prefetch_buffer_header (b[9], LOAD); + vlib_prefetch_buffer_header (b[10], LOAD); + vlib_prefetch_buffer_header (b[11], LOAD); + + vlib_prefetch_buffer_data (b[4], LOAD); + vlib_prefetch_buffer_data (b[5], LOAD); + vlib_prefetch_buffer_data (b[6], LOAD); + vlib_prefetch_buffer_data (b[7], LOAD); + } + + sai0 = vnet_buffer (b[0])->ipsec.sad_index; + sai1 = vnet_buffer (b[1])->ipsec.sad_index; + sai2 = vnet_buffer (b[2])->ipsec.sad_index; + sai3 = vnet_buffer (b[3])->ipsec.sad_index; + sa0 = pool_elt_at_index (im->sad, sai0); + sa1 = pool_elt_at_index (im->sad, sai1); + sa2 = pool_elt_at_index (im->sad, sai2); + sa3 = pool_elt_at_index (im->sad, sai3); + + if (is_enc) + { + ti[0] = sa0->encrypt_thread_index; + ti[1] = sa1->encrypt_thread_index; + ti[2] = sa2->encrypt_thread_index; + ti[3] = sa3->encrypt_thread_index; + } + else + { + ti[0] = sa0->decrypt_thread_index; + ti[1] = sa1->decrypt_thread_index; + ti[2] = sa2->decrypt_thread_index; + ti[3] = sa3->decrypt_thread_index; + } + + if (node->flags & VLIB_NODE_FLAG_TRACE) + { + if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_handoff_trace_t *t = + vlib_add_trace (vm, node, b[0], sizeof (*t)); + t->next_worker_index = ti[0]; + } + if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_handoff_trace_t *t = + vlib_add_trace (vm, node, b[1], sizeof (*t)); + t->next_worker_index = ti[1]; + } + if (PREDICT_FALSE (b[2]->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_handoff_trace_t *t = + vlib_add_trace (vm, node, b[2], sizeof (*t)); + t->next_worker_index = ti[2]; + } + if (PREDICT_FALSE (b[3]->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_handoff_trace_t *t = + vlib_add_trace (vm, node, b[3], sizeof (*t)); + t->next_worker_index = ti[3]; + } + } + + n_left_from -= 4; + ti += 4; + b += 4; + } + while (n_left_from > 0) + { + ipsec_sa_t *sa0; + u32 sai0; + + sai0 = vnet_buffer (b[0])->ipsec.sad_index; + sa0 = pool_elt_at_index (im->sad, sai0); + + if (is_enc) + ti[0] = sa0->encrypt_thread_index; + else + ti[0] = sa0->decrypt_thread_index; + + if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_handoff_trace_t *t = + vlib_add_trace (vm, node, b[0], sizeof (*t)); + t->next_worker_index = ti[0]; + } + + n_left_from -= 1; + ti += 1; + b += 1; + } + + n_enq = vlib_buffer_enqueue_to_thread (vm, fq_index, from, + thread_indices, frame->n_vectors, 1); + + if (n_enq < frame->n_vectors) + vlib_node_increment_counter (vm, node->node_index, + IPSEC_HANDOFF_ERROR_CONGESTION_DROP, + frame->n_vectors - n_enq); + + return n_enq; +} + +VLIB_NODE_FN (esp4_encrypt_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->esp4_enc_fq_index, true); +} + +VLIB_NODE_FN (esp6_encrypt_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->esp6_enc_fq_index, true); +} + +VLIB_NODE_FN (esp4_encrypt_tun_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->esp4_enc_tun_fq_index, + true); +} + +VLIB_NODE_FN (esp6_encrypt_tun_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->esp6_enc_tun_fq_index, + true); +} + +VLIB_NODE_FN (esp4_decrypt_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->esp4_dec_fq_index, false); +} + +VLIB_NODE_FN (esp6_decrypt_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->esp6_dec_fq_index, false); +} + +VLIB_NODE_FN (esp4_decrypt_tun_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->esp4_dec_tun_fq_index, + false); +} + +VLIB_NODE_FN (esp6_decrypt_tun_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->esp6_dec_tun_fq_index, + false); +} + +VLIB_NODE_FN (ah4_encrypt_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->ah4_enc_fq_index, true); +} + +VLIB_NODE_FN (ah6_encrypt_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->ah6_enc_fq_index, true); +} + +VLIB_NODE_FN (ah4_decrypt_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->ah4_dec_fq_index, false); +} + +VLIB_NODE_FN (ah6_decrypt_handoff) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + + return ipsec_handoff (vm, node, from_frame, im->ah6_dec_fq_index, false); +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (esp4_encrypt_handoff) = { + .name = "esp4-encrypt-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (esp6_encrypt_handoff) = { + .name = "esp6-encrypt-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (esp4_encrypt_tun_handoff) = { + .name = "esp4-encrypt-tun-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (esp6_encrypt_tun_handoff) = { + .name = "esp6-encrypt-tun-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (esp4_decrypt_handoff) = { + .name = "esp4-decrypt-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (esp6_decrypt_handoff) = { + .name = "esp6-decrypt-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (esp4_decrypt_tun_handoff) = { + .name = "esp4-decrypt-tun-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (esp6_decrypt_tun_handoff) = { + .name = "esp6-decrypt-tun-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (ah4_encrypt_handoff) = { + .name = "ah4-encrypt-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (ah6_encrypt_handoff) = { + .name = "ah6-encrypt-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (ah4_decrypt_handoff) = { + .name = "ah4-decrypt-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +VLIB_REGISTER_NODE (ah6_decrypt_handoff) = { + .name = "ah6-decrypt-handoff", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_handoff_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN(ipsec_handoff_error_strings), + .error_strings = ipsec_handoff_error_strings, + .n_next_nodes = 1, + .next_nodes = { + [0] = "error-drop", + }, +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |