--- /dev/null
+/*
+ * Copyright (c) 2017 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/udp/udp_encap.h>
+
+typedef struct udp4_encap_trace_t_
+{
+ udp_header_t udp;
+ ip4_header_t ip;
+} udp4_encap_trace_t;
+
+typedef struct udp6_encap_trace_t_
+{
+ udp_header_t udp;
+ ip6_header_t ip;
+} udp6_encap_trace_t;
+
+static u8 *
+format_udp4_encap_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 *);
+ udp4_encap_trace_t *t;
+
+ t = va_arg (*args, udp4_encap_trace_t *);
+
+ s = format (s, "%U\n %U",
+ format_ip4_header, &t->ip, sizeof (t->ip),
+ format_udp_header, &t->udp, sizeof (t->udp));
+ return (s);
+}
+
+static u8 *
+format_udp6_encap_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 *);
+ udp6_encap_trace_t *t;
+
+ t = va_arg (*args, udp6_encap_trace_t *);
+
+ s = format (s, "%U\n %U",
+ format_ip6_header, &t->ip, sizeof (t->ip),
+ format_udp_header, &t->udp, sizeof (t->udp));
+ return (s);
+}
+
+always_inline uword
+udp_encap_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame, int is_encap_v6)
+{
+ u32 *from = vlib_frame_vector_args (frame);
+ u32 n_left_from, n_left_to_next, *to_next, next_index;
+
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ vlib_buffer_t *b0, *b1;
+ udp_encap_t *ue0, *ue1;
+ u32 bi0, next0, uei0;
+ u32 bi1, next1, uei1;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, STORE);
+ vlib_prefetch_buffer_header (p3, STORE);
+ }
+
+ bi0 = to_next[0] = from[0];
+ bi1 = to_next[1] = from[1];
+
+ from += 2;
+ n_left_from -= 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+ uei0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
+ uei1 = vnet_buffer (b1)->ip.adj_index[VLIB_TX];
+
+ /* Rewrite packet header and updates lengths. */
+ ue0 = udp_encap_get (uei0);
+ ue1 = udp_encap_get (uei1);
+
+ /* Paint */
+ if (is_encap_v6)
+ {
+ const u8 n_bytes =
+ sizeof (udp_header_t) + sizeof (ip6_header_t);
+ ip_udp_encap_two (vm, b0, b1, (u8 *) & ue0->ue_hdrs,
+ (u8 *) & ue1->ue_hdrs, n_bytes, 0);
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ udp6_encap_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->udp = ue0->ue_hdrs.ip6.ue_udp;
+ tr->ip = ue0->ue_hdrs.ip6.ue_ip6;
+ }
+ if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ udp6_encap_trace_t *tr =
+ vlib_add_trace (vm, node, b1, sizeof (*tr));
+ tr->udp = ue1->ue_hdrs.ip6.ue_udp;
+ tr->ip = ue1->ue_hdrs.ip6.ue_ip6;
+ }
+ }
+ else
+ {
+ const u8 n_bytes =
+ sizeof (udp_header_t) + sizeof (ip4_header_t);
+
+ ip_udp_encap_two (vm, b0, b1,
+ (u8 *) & ue0->ue_hdrs,
+ (u8 *) & ue1->ue_hdrs, n_bytes, 1);
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ udp4_encap_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->udp = ue0->ue_hdrs.ip4.ue_udp;
+ tr->ip = ue0->ue_hdrs.ip4.ue_ip4;
+ }
+ if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ udp4_encap_trace_t *tr =
+ vlib_add_trace (vm, node, b1, sizeof (*tr));
+ tr->udp = ue1->ue_hdrs.ip4.ue_udp;
+ tr->ip = ue1->ue_hdrs.ip4.ue_ip4;
+ }
+ }
+
+ next0 = ue0->ue_dpo.dpoi_next_node;
+ next1 = ue1->ue_dpo.dpoi_next_node;
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ue0->ue_dpo.dpoi_index;
+ vnet_buffer (b1)->ip.adj_index[VLIB_TX] = ue1->ue_dpo.dpoi_index;
+
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0, next0, uei0;
+ vlib_buffer_t *b0;
+ udp_encap_t *ue0;
+
+ 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);
+
+ uei0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
+
+ /* Rewrite packet header and updates lengths. */
+ ue0 = udp_encap_get (uei0);
+
+ /* Paint */
+ if (is_encap_v6)
+ {
+ const u8 n_bytes =
+ sizeof (udp_header_t) + sizeof (ip6_header_t);
+ ip_udp_encap_one (vm, b0, (u8 *) & ue0->ue_hdrs.ip6, n_bytes,
+ 0);
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ udp6_encap_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->udp = ue0->ue_hdrs.ip6.ue_udp;
+ tr->ip = ue0->ue_hdrs.ip6.ue_ip6;
+ }
+ }
+ else
+ {
+ const u8 n_bytes =
+ sizeof (udp_header_t) + sizeof (ip4_header_t);
+
+ ip_udp_encap_one (vm, b0, (u8 *) & ue0->ue_hdrs.ip4, n_bytes,
+ 1);
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ udp4_encap_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->udp = ue0->ue_hdrs.ip4.ue_udp;
+ tr->ip = ue0->ue_hdrs.ip4.ue_ip4;
+ }
+ }
+
+ next0 = ue0->ue_dpo.dpoi_next_node;
+ vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ue0->ue_dpo.dpoi_index;
+
+ 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);
+ }
+
+ return frame->n_vectors;
+}
+
+static uword
+udp4_encap (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return udp_encap_inline (vm, node, frame, 0);
+}
+
+static uword
+udp6_encap (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return udp_encap_inline (vm, node, frame, 1);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (udp4_encap_node) = {
+ .function = udp4_encap,
+ .name = "udp4-encap",
+ .vector_size = sizeof (u32),
+
+ .format_trace = format_udp4_encap_trace,
+
+ .n_next_nodes = 0,
+};
+VLIB_NODE_FUNCTION_MULTIARCH (udp4_encap_node, udp4_encap);
+
+VLIB_REGISTER_NODE (udp6_encap_node) = {
+ .function = udp6_encap,
+ .name = "udp6-encap",
+ .vector_size = sizeof (u32),
+
+ .format_trace = format_udp6_encap_trace,
+
+ .n_next_nodes = 0,
+};
+VLIB_NODE_FUNCTION_MULTIARCH (udp6_encap_node, udp6_encap);
+/* *INDENT-ON* */
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff