diff options
Diffstat (limited to 'src/plugins/ikev2/ikev2_handoff.c')
| -rw-r--r-- | src/plugins/ikev2/ikev2_handoff.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/plugins/ikev2/ikev2_handoff.c b/src/plugins/ikev2/ikev2_handoff.c new file mode 100644 index 00000000000..8f55985bce8 --- /dev/null +++ b/src/plugins/ikev2/ikev2_handoff.c @@ -0,0 +1,165 @@ +/* + * 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", + }, +}; |