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-rw-r--r--hicn-plugin/src/host_stack/output_node.c287
1 files changed, 287 insertions, 0 deletions
diff --git a/hicn-plugin/src/host_stack/output_node.c b/hicn-plugin/src/host_stack/output_node.c
new file mode 100644
index 000000000..8e5f1e307
--- /dev/null
+++ b/hicn-plugin/src/host_stack/output_node.c
@@ -0,0 +1,287 @@
+/*
+ * Copyright (c) 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.
+ */
+
+#include <vlibmemory/api.h>
+#include <vlib/vlib.h>
+
+#include "host_stack.h"
+#include "inlines.h"
+
+#include <vppinfra/hash.h>
+#include <vppinfra/error.h>
+#include <vppinfra/elog.h>
+
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+#include <vnet/ip/ip.h>
+#include <vnet/udp/udp.h>
+#include <vnet/udp/udp_packet.h>
+#include <vnet/session/session.h>
+
+typedef enum _hicn_hs_output_next
+{
+ HICN_HS_OUTPUT_NEXT_IP_LOOKUP,
+ HICN_HS_OUTPUT_NEXT_NO_FLUSH,
+ HICN_HS_OUTPUT_N_NEXT
+} hicn_hs_output_next_t;
+
+/**
+ * Next nodes.
+ */
+#define foreach_hicn_hs_output4_next \
+ _ (IP_LOOKUP, "ip4-lookup") \
+ _ (NO_FLUSH, "hicn_hs-no-flush")
+// _ (DROP, "ip4-drop")
+
+
+#define foreach_hicn_hs_output6_next \
+ _ (IP_LOOKUP, "ip6-lookup") \
+ _ (NO_FLUSH, "hicn_hs-no-flush")
+// _ (DROP, "ip6-drop")
+
+
+typedef enum
+{
+#define _(s, n) HICN_HS_OUTPUT4_NEXT_##s,
+ foreach_hicn_hs_output4_next
+#undef _
+ HICN_HS_OUTPUT4_N_NEXT,
+} hicn_hs_output4_next_t;
+
+typedef enum
+{
+#define _(s, n) HICN_HS_OUTPUT6_NEXT_##s,
+ foreach_hicn_hs_output6_next
+#undef _
+ HICN_HS_OUTPUT6_N_NEXT,
+} hicn_hs_output6_next_t;
+
+typedef struct
+{
+ u32 next_index;
+ hicn_name_t name;
+} hicn_hs_output_trace_t;
+
+always_inline u8 *
+format_hicn_hs_output_trace_i (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_hs_output_trace_t *t = va_arg (*args, hicn_hs_output_trace_t *);
+ char name[64];
+ u32 indent = format_get_indent (s);
+
+ hicn_name_ntop(&t->name, name, 64);
+ s = format (s, "hicn_hs_output: next-index %d", t->next_index);
+ s = format (s, "\n%Upacket: name %s", format_white_space, indent + 2,
+ name);
+ return s;
+}
+
+static u8 *
+format_hicn_hs_output4_trace (u8 * s, va_list * args)
+{
+ return format_hicn_hs_output_trace_i(s, args);
+}
+
+static u8 *
+format_hicn_hs_output6_trace (u8 * s, va_list * args)
+{
+ return format_hicn_hs_output_trace_i(s, args);
+}
+
+static_always_inline void
+hicn_hs_trace_buffer (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_buffer_t * b, u32 next, uword * n_tracep)
+{
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b);
+
+ if (PREDICT_TRUE (b != 0))
+ {
+ hicn_hs_output_trace_t *tr;
+ vlib_trace_buffer (vm, node, next, b, /* follow_chain */ 0);
+ vlib_set_trace_count (vm, node, --(*n_tracep));
+ tr = vlib_add_trace (vm, node, b, sizeof (*tr));
+ tr->next_index = next;
+// hicn_interest_get_name(HF_INET6_TCP,
+// (const hicn_header_t *)vlib_buffer_get_current(b),
+// &tr->name);
+ }
+}
+
+always_inline uword
+hicn_hs_output_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame, int is_ip4)
+{
+ u32 n_left_from, *from, thread_index = vm->thread_index;
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
+ u16 nexts[VLIB_FRAME_SIZE], *next;
+
+ uword n_trace = vlib_get_trace_count (vm, node);
+
+ u32 node_index = is_ip4 ? hicn_hs_output4_node.index : hicn_hs_output6_node.index;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+
+ vlib_get_buffers (vm, from, bufs, n_left_from);
+ b = bufs;
+ next = nexts;
+
+ while (n_left_from >= 4)
+ {
+ hicn_hs_ctx_t *hc0, *hc1;
+ u8 flush0, flush1;
+
+ {
+ vlib_prefetch_buffer_header (b[2], STORE);
+ CLIB_PREFETCH (b[2]->data, 2 * CLIB_CACHE_LINE_BYTES, STORE);
+
+ vlib_prefetch_buffer_header (b[3], STORE);
+ CLIB_PREFETCH (b[3]->data, 2 * CLIB_CACHE_LINE_BYTES, STORE);
+ }
+
+ hc0 = hicn_hs_get_ctx_by_index (hicn_hs_buffer (b[0])->ctx_index, thread_index);
+ hc1 = hicn_hs_get_ctx_by_index (hicn_hs_buffer (b[1])->ctx_index, thread_index);
+ flush0 = hicn_hs_buffer(b[0])->flush;
+ flush1 = hicn_hs_buffer(b[1])->flush;
+
+ ASSERT (hc0 && hc1);
+
+ vnet_buffer (b[0])->sw_if_index[VLIB_TX] = hc0->c_fib_index;
+ vnet_buffer (b[0])->sw_if_index[VLIB_RX] = 0;
+ next[0] = !flush0;
+
+ vnet_buffer (b[1])->sw_if_index[VLIB_TX] = hc1->c_fib_index;
+ vnet_buffer (b[1])->sw_if_index[VLIB_RX] = 0;
+ next[1] = !flush1;
+
+ if (PREDICT_FALSE (n_trace > 0))
+ {
+ hicn_hs_trace_buffer (vm, node, b[0], next[0], &n_trace);
+ if (PREDICT_FALSE (n_trace > 0))
+ hicn_hs_trace_buffer (vm, node, b[1], next[1], &n_trace);
+ }
+
+ b += 2;
+ n_left_from -= 2;
+ next += 2;
+ }
+ while (n_left_from > 0)
+ {
+ hicn_hs_ctx_t *hc0;
+ u8 flush0;
+
+ if (n_left_from > 1)
+ {
+ vlib_prefetch_buffer_header (b[1], STORE);
+ CLIB_PREFETCH (b[1]->data, 2 * CLIB_CACHE_LINE_BYTES, STORE);
+ }
+
+ hc0 = hicn_hs_get_ctx_by_index (hicn_hs_buffer (b[0])->ctx_index, thread_index);
+ flush0 = hicn_hs_buffer(b[0])->flush;
+
+ ASSERT (hc0);
+
+ vnet_buffer (b[0])->sw_if_index[VLIB_TX] = hc0->c_fib_index;
+ vnet_buffer (b[0])->sw_if_index[VLIB_RX] = 0;
+ next[0] = !flush0;
+
+ if (PREDICT_FALSE (n_trace > 0))
+ hicn_hs_trace_buffer (vm, node, b[0], next[0], &n_trace);
+
+ b += 1;
+ n_left_from -= 1;
+ next += 1;
+ }
+
+ vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
+ vlib_node_increment_counter (vm, node_index, HICN_HS_ERROR_PACKETS_SENT, frame->n_vectors);
+
+ return frame->n_vectors;
+}
+
+static uword
+hicn_hs_output4_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return hicn_hs_output_inline (vm, node, frame, 1);
+}
+
+static uword
+hicn_hs_output6_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return hicn_hs_output_inline (vm, node, frame, 0);
+}
+
+static uword
+hicn_hs_no_flush_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return frame->n_vectors;
+}
+
+VLIB_REGISTER_NODE (hicn_hs_no_flush_node) = {
+ .function = hicn_hs_no_flush_node_fn,
+ .name = "hicn_hs-no-flush",
+ .vector_size = sizeof (u32),
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = HICN_HS_N_ERROR,
+ .error_strings = hicn_hs_error_strings,
+ .n_next_nodes = 0,
+ .next_nodes = {},
+};
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (hicn_hs_output4_node) = {
+ .function = hicn_hs_output4_node_fn,
+ .name = HICN_HS_OUTPUT4_NODE_NAME,
+ .vector_size = sizeof (u32),
+ .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
+ .format_trace = format_hicn_hs_output4_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = HICN_HS_N_ERROR,
+ .error_strings = hicn_hs_error_strings,
+ .n_next_nodes = HICN_HS_OUTPUT4_N_NEXT,
+ .next_nodes = {
+#define _(s, n) [HICN_HS_OUTPUT4_NEXT_##s] = n,
+ foreach_hicn_hs_output4_next
+#undef _
+ },
+};
+
+VLIB_REGISTER_NODE (hicn_hs_output6_node) = {
+ .function = hicn_hs_output6_node_fn,
+ .name = HICN_HS_OUTPUT6_NODE_NAME,
+ .vector_size = sizeof (u32),
+ .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
+ .format_trace = format_hicn_hs_output6_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = HICN_HS_N_ERROR,
+ .error_strings = hicn_hs_error_strings,
+ .n_next_nodes = HICN_HS_OUTPUT6_N_NEXT,
+ .next_nodes = {
+#define _(s, n) [HICN_HS_OUTPUT6_NEXT_##s] = n,
+ foreach_hicn_hs_output6_next
+#undef _
+ },
+};
+
+/* *INDENT-ON* */ \ No newline at end of file