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/*
* 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 <vlib/vlib.h>
#include <vnet/vnet.h>
#include <ikev2/ikev2_priv.h>
extern ikev2_main_t ikev2_main;
#define foreach_ikev2_handoff_error _ (CONGESTION_DROP, "congestion drop")
typedef enum
{
#define _(sym, str) IKEV2_HANDOFF_ERROR_##sym,
foreach_ikev2_handoff_error
#undef _
IKEV2_HANDOFF_N_ERROR,
} ikev2_handoff_error_t;
static char *ikev2_handoff_error_strings[] = {
#define _(sym, string) string,
foreach_ikev2_handoff_error
#undef _
};
typedef struct ikev2_handoff_trace_t_
{
u32 current_worker_index;
u32 next_worker_index;
} ikev2_handoff_trace_t;
u8 *
format_ikev2_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 *);
ikev2_handoff_trace_t *t = va_arg (*args, ikev2_handoff_trace_t *);
s = format (s, "ikev2 handoff %d to %d", t->current_worker_index,
t->next_worker_index);
return s;
}
static_always_inline uword
ikev2_handoff_inline (vlib_main_t *vm, vlib_node_runtime_t *node,
vlib_frame_t *frame, u32 fq_index)
{
ikev2_main_t *km = &ikev2_main;
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
u16 thread_indices[VLIB_FRAME_SIZE], *ti;
u32 n_enq, n_left_from, *from;
u32 this_thread;
this_thread = vm->thread_index;
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 > 0)
{
ti[0] = km->handoff_thread;
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
b[0]->flags & VLIB_BUFFER_IS_TRACED))
{
ikev2_handoff_trace_t *t =
vlib_add_trace (vm, node, b[0], sizeof (*t));
t->current_worker_index = this_thread;
t->next_worker_index = ti[0];
}
n_left_from--;
ti++;
b++;
}
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,
IKEV2_HANDOFF_ERROR_CONGESTION_DROP,
frame->n_vectors - n_enq);
return n_enq;
}
/* Do worker handoff based on the ikev2's thread_index */
VLIB_NODE_FN (ikev2_ip4_handoff)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
{
ikev2_main_t *km = &ikev2_main;
return ikev2_handoff_inline (vm, node, from_frame, km->handoff_ip4_fq_index);
}
VLIB_NODE_FN (ikev2_ip4_natt_handoff)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
{
ikev2_main_t *km = &ikev2_main;
return ikev2_handoff_inline (vm, node, from_frame,
km->handoff_ip4_natt_fq_index);
}
VLIB_NODE_FN (ikev2_ip6_handoff)
(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
{
ikev2_main_t *km = &ikev2_main;
return ikev2_handoff_inline (vm, node, from_frame, km->handoff_ip6_fq_index);
}
VLIB_REGISTER_NODE (ikev2_ip4_handoff) = {
.name = "ikev2-ip4-handoff",
.vector_size = sizeof (u32),
.format_trace = format_ikev2_handoff_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN(ikev2_handoff_error_strings),
.error_strings = ikev2_handoff_error_strings,
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
};
VLIB_REGISTER_NODE (ikev2_ip4_natt_handoff) = {
.name = "ikev2-ip4-natt-handoff",
.vector_size = sizeof (u32),
.format_trace = format_ikev2_handoff_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN(ikev2_handoff_error_strings),
.error_strings = ikev2_handoff_error_strings,
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
};
VLIB_REGISTER_NODE (ikev2_ip6_handoff) = {
.name = "ikev2-ip6-handoff",
.vector_size = sizeof (u32),
.format_trace = format_ikev2_handoff_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN(ikev2_handoff_error_strings),
.error_strings = ikev2_handoff_error_strings,
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
};
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