/*
* 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)
{
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
u16 thread_indices[VLIB_FRAME_SIZE], *ti;
u32 n_enq, n_left_from, *from;
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)
{
/* 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);
}
ti[0] = vnet_buffer (b[0])->ipsec.thread_index;
ti[1] = vnet_buffer (b[1])->ipsec.thread_index;
ti[2] = vnet_buffer (b[2])->ipsec.thread_index;
ti[3] = vnet_buffer (b[3])->ipsec.thread_index;
if (PREDICT_FALSE (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)
{
ti[0] = vnet_buffer (b[0])->ipsec.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, node, 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);
}
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);
}
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);
}
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);
}
VLIB_NODE_FN (esp_mpls_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->esp_mpls_enc_tun_fq_index);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
/* *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 (esp_mpls_encrypt_tun_handoff) = {
.name = "esp-mpls-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:
*/
