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-rw-r--r--hicn-plugin/src/faces/app/face_prod_node.c314
1 files changed, 314 insertions, 0 deletions
diff --git a/hicn-plugin/src/faces/app/face_prod_node.c b/hicn-plugin/src/faces/app/face_prod_node.c
new file mode 100644
index 000000000..80c3e124c
--- /dev/null
+++ b/hicn-plugin/src/faces/app/face_prod_node.c
@@ -0,0 +1,314 @@
+/*
+ * Copyright (c) 2017-2020 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.
+ */
+
+/**
+ * @file
+ *
+ * @brief Application interface node
+ *
+ * This node runs after the device-input node and perfoms some safety checks in
+ * order to avoid unespected interest and data (i.e., hICN packets whose name do
+ * not contain the prefix associated to the application face)
+ */
+
+#include "face_prod.h"
+#include "../../hicn_api.h"
+#include "../../mgmt.h"
+
+static __clib_unused char *face_prod_input_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+/* Node context data */
+typedef struct hicn_face_prod_runtime_s
+{
+ int id;
+} hicn_face_prod_runtime_t;
+
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+} hicn_face_prod_input_trace_t;
+
+typedef enum
+{
+ HICN_FACE_PROD_NEXT_DATA_IP4,
+ HICN_FACE_PROD_NEXT_DATA_IP6,
+ HICN_FACE_PROD_NEXT_ERROR_DROP,
+ HICN_FACE_PROD_N_NEXT,
+} hicn_face_prod_next_t;
+
+vlib_node_registration_t hicn_face_prod_input_node;
+
+static __clib_unused u8 *
+format_face_prod_input_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 *);
+ hicn_face_prod_input_trace_t *t =
+ va_arg (*args, hicn_face_prod_input_trace_t *);
+ CLIB_UNUSED (u32 indent) = format_get_indent (s);
+
+ s = format (s, "prod-face: sw_if_index %d next-index %d",
+ t->sw_if_index, t->next_index);
+ return s;
+}
+
+static_always_inline int
+match_ip4_name (u32 * name, fib_prefix_t * prefix)
+{
+ u32 xor = 0;
+
+ xor = *name & prefix->fp_addr.ip4.data_u32;
+
+ return xor == prefix->fp_addr.ip4.data_u32;
+}
+
+static_always_inline int
+match_ip6_name (u8 * name, fib_prefix_t * prefix)
+{
+ union
+ {
+ u32x4 as_u32x4;
+ u64 as_u64[2];
+ u32 as_u32[4];
+ } xor_sum __attribute__ ((aligned (sizeof (u32x4))));
+
+ xor_sum.as_u64[0] = ((u64 *) name)[0] & prefix->fp_addr.ip6.as_u64[0];
+ xor_sum.as_u64[1] = ((u64 *) name)[1] & prefix->fp_addr.ip6.as_u64[1];
+
+ return (xor_sum.as_u64[0] == prefix->fp_addr.ip6.as_u64[0]) &&
+ (xor_sum.as_u64[1] == prefix->fp_addr.ip6.as_u64[1]);
+}
+
+static_always_inline u32
+hicn_face_prod_next_from_data_hdr (vlib_node_runtime_t * node,
+ vlib_buffer_t * b, fib_prefix_t * prefix)
+{
+ u8 *ptr = vlib_buffer_get_current (b);
+ u8 v = *ptr & 0xf0;
+ int match_res = 1;
+
+ if (PREDICT_TRUE (v == 0x40 && ip46_address_is_ip4 (&prefix->fp_addr)))
+ {
+ match_res = match_ip4_name ((u32 *) & (ptr[12]), prefix);
+ }
+ else if (PREDICT_TRUE (v == 0x60 && !ip46_address_is_ip4 (&prefix->fp_addr)))
+ {
+ match_res = match_ip6_name (& (ptr[8]), prefix);
+ }
+
+ return match_res ? HICN_FACE_PROD_NEXT_DATA_IP4 + (v ==
+ 0x60) :
+ HICN_FACE_PROD_NEXT_ERROR_DROP;
+}
+
+static_always_inline void
+hicn_face_prod_trace_buffer (vlib_main_t * vm, vlib_node_runtime_t * node,
+ u32 swif, vlib_buffer_t * b, u32 next)
+{
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
+ (b->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ hicn_face_prod_input_trace_t *t =
+ vlib_add_trace (vm, node, b, sizeof (*t));
+ t->next_index = next;
+ t->sw_if_index = swif;
+ }
+}
+
+static uword
+hicn_face_prod_input_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next;
+ hicn_face_prod_next_t next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ from = vlib_frame_vector_args (frame);
+ n_left_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 >= 8 && n_left_to_next >= 4)
+ {
+ vlib_buffer_t *b0, *b1, *b2, *b3;
+ u32 bi0, bi1, bi2, bi3;
+ hicn_face_prod_state_t *prod_face0 = NULL;
+ hicn_face_prod_state_t *prod_face1 = NULL;
+ hicn_face_prod_state_t *prod_face2 = NULL;
+ hicn_face_prod_state_t *prod_face3 = NULL;
+ u32 next0, next1, next2, next3;
+
+ {
+ vlib_buffer_t *b4, *b5, *b6, *b7;
+ b4 = vlib_get_buffer (vm, from[4]);
+ b5 = vlib_get_buffer (vm, from[5]);
+ b6 = vlib_get_buffer (vm, from[6]);
+ b7 = vlib_get_buffer (vm, from[7]);
+ CLIB_PREFETCH (b4, CLIB_CACHE_LINE_BYTES, STORE);
+ CLIB_PREFETCH (b5, CLIB_CACHE_LINE_BYTES, STORE);
+ CLIB_PREFETCH (b6, CLIB_CACHE_LINE_BYTES, STORE);
+ CLIB_PREFETCH (b7, CLIB_CACHE_LINE_BYTES, STORE);
+ }
+
+ bi0 = from[0];
+ bi1 = from[1];
+ bi2 = from[2];
+ bi3 = from[3];
+
+ from += 4;
+ n_left_from -= 4;
+ to_next[0] = bi0;
+ to_next[1] = bi1;
+ to_next[2] = bi2;
+ to_next[3] = bi3;
+
+ to_next += 4;
+ n_left_to_next -= 4;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+ b2 = vlib_get_buffer (vm, bi2);
+ b3 = vlib_get_buffer (vm, bi3);
+
+ prod_face0 =
+ &face_state_vec[vnet_buffer (b0)->sw_if_index[VLIB_RX]];
+ prod_face1 =
+ &face_state_vec[vnet_buffer (b1)->sw_if_index[VLIB_RX]];
+ prod_face2 =
+ &face_state_vec[vnet_buffer (b2)->sw_if_index[VLIB_RX]];
+ prod_face3 =
+ &face_state_vec[vnet_buffer (b3)->sw_if_index[VLIB_RX]];
+
+ next0 =
+ hicn_face_prod_next_from_data_hdr (node, b0, &prod_face0->prefix);
+ next1 =
+ hicn_face_prod_next_from_data_hdr (node, b1, &prod_face1->prefix);
+ next2 =
+ hicn_face_prod_next_from_data_hdr (node, b2, &prod_face2->prefix);
+ next3 =
+ hicn_face_prod_next_from_data_hdr (node, b3, &prod_face3->prefix);
+ stats.pkts_data_count += 4;
+
+ /* trace */
+ hicn_face_prod_trace_buffer (vm, node,
+ vnet_buffer (b0)->sw_if_index[VLIB_RX],
+ b0, next0);
+ hicn_face_prod_trace_buffer (vm, node,
+ vnet_buffer (b1)->sw_if_index[VLIB_RX],
+ b1, next1);
+ hicn_face_prod_trace_buffer (vm, node,
+ vnet_buffer (b2)->sw_if_index[VLIB_RX],
+ b2, next2);
+ hicn_face_prod_trace_buffer (vm, node,
+ vnet_buffer (b3)->sw_if_index[VLIB_RX],
+ b3, next3);
+
+ /* enqueue */
+ vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, bi1, bi2, bi3,
+ next0, next1, next2, next3);
+
+ stats.pkts_processed += 4;
+
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ vlib_buffer_t *b0;
+ u32 bi0, swif;
+ hicn_face_prod_state_t *prod_face = NULL;
+ u32 next0;
+
+ if (n_left_from > 1)
+ {
+ vlib_buffer_t *b1;
+ b1 = vlib_get_buffer (vm, from[1]);
+ CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, STORE);
+ }
+
+ bi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ swif = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ prod_face = &face_state_vec[swif];
+
+ next0 =
+ hicn_face_prod_next_from_data_hdr (node, b0, &prod_face->prefix);
+ stats.pkts_data_count++;
+
+ /* trace */
+ hicn_face_prod_trace_buffer (vm, node,
+ vnet_buffer (b0)->sw_if_index[VLIB_RX],
+ b0, next0);
+
+ /* enqueue */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
+
+ stats.pkts_processed += 1;
+
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_PROCESSED, stats.pkts_processed);
+ vlib_node_increment_counter (vm, node->node_index, HICNFWD_ERROR_DATAS,
+ stats.pkts_data_count);
+
+ return (frame->n_vectors);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE(hicn_face_prod_input_node) =
+{
+ .function = hicn_face_prod_input_node_fn,
+ .name = "hicn-face-prod-input",
+ .vector_size = sizeof(u32),
+ .format_trace = format_face_prod_input_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(face_prod_input_error_strings),
+ .error_strings = face_prod_input_error_strings,
+ .n_next_nodes = HICN_FACE_PROD_N_NEXT,
+ .next_nodes =
+ {
+ [HICN_FACE_PROD_NEXT_DATA_IP4] = "hicn4-face-input",
+ [HICN_FACE_PROD_NEXT_DATA_IP6] = "hicn6-face-input",
+ [HICN_FACE_PROD_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables: eval: (c-set-style "gnu") End:
+ */