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Diffstat (limited to 'vpp/plugins/sixrd-plugin/sixrd/ip6_sixrd.c')
-rw-r--r--vpp/plugins/sixrd-plugin/sixrd/ip6_sixrd.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/vpp/plugins/sixrd-plugin/sixrd/ip6_sixrd.c b/vpp/plugins/sixrd-plugin/sixrd/ip6_sixrd.c
new file mode 100644
index 00000000..36f3fab3
--- /dev/null
+++ b/vpp/plugins/sixrd-plugin/sixrd/ip6_sixrd.c
@@ -0,0 +1,129 @@
+/*---------------------------------------------------------------------------
+ * Copyright (c) 2009-2014 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.
+ *---------------------------------------------------------------------------
+ */
+/*
+ * Defines used for testing various optimisation schemes
+ */
+#define SIXRD_ENCAP_DUAL 0
+
+#include "sixrd.h"
+
+static vlib_node_registration_t ip6_sixrd_node;
+
+typedef enum {
+ IP6_SIXRD_NEXT_IP4_LOOKUP,
+ IP6_SIXRD_NEXT_DROP,
+ IP6_SIXRD_N_NEXT,
+} ip6_sixrd_next_t;
+
+/*
+ * ip6_sixrd
+ */
+static uword
+ip6_sixrd (vlib_main_t *vm,
+ vlib_node_runtime_t *node,
+ vlib_frame_t *frame)
+{
+ u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
+ vlib_node_runtime_t *error_node = vlib_node_get_runtime(vm, ip6_sixrd_node.index);
+ u32 encap = 0;
+ from = vlib_frame_vector_args(frame);
+ 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 > 0 && n_left_to_next > 0) {
+ u32 pi0;
+ vlib_buffer_t *p0;
+ sixrd_domain_t *d0;
+ u8 error0 = SIXRD_ERROR_NONE;
+ ip6_header_t *ip60;
+ ip4_header_t *ip4h0;
+ u32 next0 = IP6_SIXRD_NEXT_IP4_LOOKUP;
+ u32 sixrd_domain_index0 = ~0;
+
+ pi0 = to_next[0] = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next +=1;
+ n_left_to_next -= 1;
+
+ p0 = vlib_get_buffer(vm, pi0);
+ ip60 = vlib_buffer_get_current(p0);
+ // p0->current_length = clib_net_to_host_u16(ip40->length);
+ d0 = ip6_sixrd_get_domain(vnet_buffer(p0)->ip.adj_index[VLIB_TX], &sixrd_domain_index0);
+ ASSERT(d0);
+
+ /* SIXRD calc */
+ u64 dal60 = clib_net_to_host_u64(ip60->dst_address.as_u64[0]);
+ u32 da40 = sixrd_get_addr(d0, dal60);
+ u16 len = clib_net_to_host_u16(ip60->payload_length) + 60;
+ if (da40 == 0) error0 = SIXRD_ERROR_UNKNOWN;
+
+ /* construct ipv4 header */
+ vlib_buffer_advance(p0, - (sizeof(ip4_header_t)));
+ ip4h0 = vlib_buffer_get_current(p0);
+ vnet_buffer(p0)->sw_if_index[VLIB_TX] = (u32)~0;
+ ip4h0->ip_version_and_header_length = 0x45;
+ ip4h0->tos = 0;
+ ip4h0->length = clib_host_to_net_u16(len);
+ ip4h0->fragment_id = 0;
+ ip4h0->flags_and_fragment_offset = 0;
+ ip4h0->ttl = 0x40;
+ ip4h0->protocol = IP_PROTOCOL_IPV6;
+ ip4h0->src_address = d0->ip4_src;
+ ip4h0->dst_address.as_u32 = clib_host_to_net_u32(da40);
+ ip4h0->checksum = ip4_header_checksum(ip4h0);
+
+ next0 = error0 == SIXRD_ERROR_NONE ? IP6_SIXRD_NEXT_IP4_LOOKUP : IP6_SIXRD_NEXT_DROP;
+
+ if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED)) {
+ sixrd_trace_t *tr = vlib_add_trace(vm, node, p0, sizeof(*tr));
+ tr->sixrd_domain_index = sixrd_domain_index0;
+ }
+
+ p0->error = error_node->errors[error0];
+ if (PREDICT_TRUE(error0 == SIXRD_ERROR_NONE)) encap++;
+
+ vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, pi0, next0);
+ }
+ vlib_put_next_frame(vm, node, next_index, n_left_to_next);
+ }
+ vlib_node_increment_counter(vm, ip6_sixrd_node.index, SIXRD_ERROR_ENCAPSULATED, encap);
+
+ return frame->n_vectors;
+}
+
+static char *sixrd_error_strings[] = {
+#define _(sym,string) string,
+ foreach_sixrd_error
+#undef _
+};
+
+VLIB_REGISTER_NODE(ip6_sixrd_node,static) = {
+ .function = ip6_sixrd,
+ .name = "ip6-sixrd",
+ .vector_size = sizeof(u32),
+ .format_trace = format_sixrd_trace,
+ .n_errors = SIXRD_N_ERROR,
+ .error_strings = sixrd_error_strings,
+ .n_next_nodes = IP6_SIXRD_N_NEXT,
+ .next_nodes = {
+ [IP6_SIXRD_NEXT_IP4_LOOKUP] = "ip4-lookup",
+ [IP6_SIXRD_NEXT_DROP] = "error-drop",
+ },
+};