2 * ipsec_if_out.c : IPSec interface output node
4 * Copyright (c) 2015 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vnet/vnet.h>
19 #include <vnet/api_errno.h>
20 #include <vnet/ip/ip.h>
22 #include <vnet/ipsec/ipsec.h>
24 /* Statistics (not really errors) */
25 #define foreach_ipsec_if_output_error \
26 _(TX, "good packets transmitted")
28 static char *ipsec_if_output_error_strings[] = {
29 #define _(sym,string) string,
30 foreach_ipsec_if_output_error
36 #define _(sym,str) IPSEC_IF_OUTPUT_ERROR_##sym,
37 foreach_ipsec_if_output_error
39 IPSEC_IF_OUTPUT_N_ERROR,
40 } ipsec_if_output_error_t;
47 } ipsec_if_output_trace_t;
50 format_ipsec_if_output_trace (u8 * s, va_list * args)
52 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
53 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
54 ipsec_if_output_trace_t *t = va_arg (*args, ipsec_if_output_trace_t *);
56 s = format (s, "IPSec: spi %u seq %u", t->spi, t->seq);
61 ipsec_if_output_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
62 vlib_frame_t * from_frame)
64 ipsec_main_t *im = &ipsec_main;
65 vnet_main_t *vnm = im->vnet_main;
66 vnet_interface_main_t *vim = &vnm->interface_main;
67 u32 *from, *to_next = 0, next_index;
68 u32 n_left_from, sw_if_index0, last_sw_if_index = ~0;
69 u32 thread_index = vlib_get_thread_index ();
70 u32 n_bytes = 0, n_packets = 0;
72 from = vlib_frame_vector_args (from_frame);
73 n_left_from = from_frame->n_vectors;
74 next_index = node->cached_next_index;
76 while (n_left_from > 0)
80 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
82 while (n_left_from > 0 && n_left_to_next > 0)
86 ipsec_tunnel_if_t *t0;
87 vnet_hw_interface_t *hi0;
89 bi0 = to_next[0] = from[0];
94 b0 = vlib_get_buffer (vm, bi0);
95 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
96 hi0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
97 t0 = pool_elt_at_index (im->tunnel_interfaces, hi0->dev_instance);
98 vnet_buffer (b0)->ipsec.sad_index = t0->output_sa_index;
99 next0 = im->esp_encrypt_next_index;
101 len0 = vlib_buffer_length_in_chain (vm, b0);
103 if (PREDICT_TRUE (sw_if_index0 == last_sw_if_index))
110 vlib_increment_combined_counter (vim->combined_sw_if_counters +
111 VNET_INTERFACE_COUNTER_TX,
112 thread_index, sw_if_index0,
114 last_sw_if_index = sw_if_index0;
119 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
121 ipsec_if_output_trace_t *tr =
122 vlib_add_trace (vm, node, b0, sizeof (*tr));
124 pool_elt_at_index (im->sad, t0->output_sa_index);
129 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
130 n_left_to_next, bi0, next0);
132 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
135 if (last_sw_if_index != ~0)
137 vlib_increment_combined_counter (vim->combined_sw_if_counters +
138 VNET_INTERFACE_COUNTER_TX,
140 last_sw_if_index, n_packets, n_bytes);
143 vlib_node_increment_counter (vm, ipsec_if_output_node.index,
144 IPSEC_IF_OUTPUT_ERROR_TX,
145 from_frame->n_vectors);
147 return from_frame->n_vectors;
151 VLIB_REGISTER_NODE (ipsec_if_output_node) = {
152 .function = ipsec_if_output_node_fn,
153 .name = "ipsec-if-output",
154 .vector_size = sizeof (u32),
155 .format_trace = format_ipsec_if_output_trace,
156 .type = VLIB_NODE_TYPE_INTERNAL,
158 .n_errors = ARRAY_LEN(ipsec_if_output_error_strings),
159 .error_strings = ipsec_if_output_error_strings,
161 .sibling_of = "ipsec-output-ip4",
165 VLIB_NODE_FUNCTION_MULTIARCH (ipsec_if_output_node, ipsec_if_output_node_fn)
167 * fd.io coding-style-patch-verification: ON
170 * eval: (c-set-style "gnu")