--- /dev/null
+/*
+ * ipsec_if_out.c : IPSec interface output 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/vnet.h>
+#include <vnet/api_errno.h>
+#include <vnet/ip/ip.h>
+
+#include <vnet/ipsec/ipsec.h>
+
+/* Statistics (not really errors) */
+#define foreach_ipsec_if_output_error \
+_(TX, "good packets transmitted")
+
+static char *ipsec_if_output_error_strings[] = {
+#define _(sym,string) string,
+ foreach_ipsec_if_output_error
+#undef _
+};
+
+typedef enum
+{
+#define _(sym,str) IPSEC_IF_OUTPUT_ERROR_##sym,
+ foreach_ipsec_if_output_error
+#undef _
+ IPSEC_IF_OUTPUT_N_ERROR,
+} ipsec_if_output_error_t;
+
+
+typedef struct
+{
+ u32 spi;
+ u32 seq;
+} ipsec_if_output_trace_t;
+
+u8 *
+format_ipsec_if_output_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_if_output_trace_t *t = va_arg (*args, ipsec_if_output_trace_t *);
+
+ s = format (s, "IPSec: spi %u seq %u", t->spi, t->seq);
+ return s;
+}
+
+static uword
+ipsec_if_output_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ ipsec_main_t *im = &ipsec_main;
+ vnet_main_t *vnm = im->vnet_main;
+ vnet_interface_main_t *vim = &vnm->interface_main;
+ u32 *from, *to_next = 0, next_index;
+ u32 n_left_from, sw_if_index0, last_sw_if_index = ~0;
+ u32 thread_index = vlib_get_thread_index ();
+ u32 n_bytes = 0, n_packets = 0;
+
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0, next0, len0;
+ vlib_buffer_t *b0;
+ ipsec_tunnel_if_t *t0;
+ vnet_hw_interface_t *hi0;
+
+ bi0 = to_next[0] = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+ b0 = vlib_get_buffer (vm, bi0);
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ hi0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
+ t0 = pool_elt_at_index (im->tunnel_interfaces, hi0->dev_instance);
+ vnet_buffer (b0)->ipsec.sad_index = t0->output_sa_index;
+ next0 = im->esp_encrypt_next_index;
+
+ len0 = vlib_buffer_length_in_chain (vm, b0);
+
+ if (PREDICT_TRUE (sw_if_index0 == last_sw_if_index))
+ {
+ n_packets++;
+ n_bytes += len0;
+ }
+ else
+ {
+ vlib_increment_combined_counter (vim->combined_sw_if_counters +
+ VNET_INTERFACE_COUNTER_TX,
+ thread_index, sw_if_index0,
+ n_packets, n_bytes);
+ last_sw_if_index = sw_if_index0;
+ n_packets = 1;
+ n_bytes = len0;
+ }
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ipsec_if_output_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ ipsec_sa_t *sa0 =
+ pool_elt_at_index (im->sad, t0->output_sa_index);
+ tr->spi = sa0->spi;
+ tr->seq = sa0->seq;
+ }
+
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ if (last_sw_if_index != ~0)
+ {
+ vlib_increment_combined_counter (vim->combined_sw_if_counters +
+ VNET_INTERFACE_COUNTER_TX,
+ thread_index,
+ last_sw_if_index, n_packets, n_bytes);
+ }
+
+ vlib_node_increment_counter (vm, ipsec_if_output_node.index,
+ IPSEC_IF_OUTPUT_ERROR_TX,
+ from_frame->n_vectors);
+
+ return from_frame->n_vectors;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ipsec_if_output_node) = {
+ .function = ipsec_if_output_node_fn,
+ .name = "ipsec-if-output",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ipsec_if_output_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(ipsec_if_output_error_strings),
+ .error_strings = ipsec_if_output_error_strings,
+
+ .sibling_of = "ipsec-output-ip4",
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (ipsec_if_output_node, ipsec_if_output_node_fn)
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff