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-rw-r--r--src/vnet/policer/node_funcs.c938
1 files changed, 938 insertions, 0 deletions
diff --git a/src/vnet/policer/node_funcs.c b/src/vnet/policer/node_funcs.c
new file mode 100644
index 00000000000..1f4997ff669
--- /dev/null
+++ b/src/vnet/policer/node_funcs.c
@@ -0,0 +1,938 @@
+/*
+ * 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 <stdint.h>
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/policer/policer.h>
+#include <vnet/ip/ip.h>
+#include <vnet/classify/policer_classify.h>
+#include <vnet/classify/vnet_classify.h>
+
+#define IP4_NON_DSCP_BITS 0x03
+#define IP4_DSCP_SHIFT 2
+#define IP6_NON_DSCP_BITS 0xf03fffff
+#define IP6_DSCP_SHIFT 22
+
+/* Dispatch functions meant to be instantiated elsewhere */
+
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u32 policer_index;
+} vnet_policer_trace_t;
+
+/* packet trace format function */
+static u8 *
+format_policer_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 *);
+ vnet_policer_trace_t *t = va_arg (*args, vnet_policer_trace_t *);
+
+ s = format (s, "VNET_POLICER: sw_if_index %d policer_index %d next %d",
+ t->sw_if_index, t->policer_index, t->next_index);
+ return s;
+}
+
+#define foreach_vnet_policer_error \
+_(TRANSMIT, "Packets Transmitted") \
+_(DROP, "Packets Dropped")
+
+typedef enum
+{
+#define _(sym,str) VNET_POLICER_ERROR_##sym,
+ foreach_vnet_policer_error
+#undef _
+ VNET_POLICER_N_ERROR,
+} vnet_policer_error_t;
+
+static char *vnet_policer_error_strings[] = {
+#define _(sym,string) string,
+ foreach_vnet_policer_error
+#undef _
+};
+
+static_always_inline void
+vnet_policer_mark (vlib_buffer_t * b, u8 dscp)
+{
+ ethernet_header_t *eh;
+ ip4_header_t *ip4h;
+ ip6_header_t *ip6h;
+ u16 type;
+
+ eh = (ethernet_header_t *) b->data;
+ type = clib_net_to_host_u16 (eh->type);
+
+ if (PREDICT_TRUE (type == ETHERNET_TYPE_IP4))
+ {
+ ip4h = (ip4_header_t *) & (b->data[sizeof (ethernet_header_t)]);;
+ ip4h->tos &= IP4_NON_DSCP_BITS;
+ ip4h->tos |= dscp << IP4_DSCP_SHIFT;
+ ip4h->checksum = ip4_header_checksum (ip4h);
+ }
+ else
+ {
+ if (PREDICT_TRUE (type == ETHERNET_TYPE_IP6))
+ {
+ ip6h = (ip6_header_t *) & (b->data[sizeof (ethernet_header_t)]);
+ ip6h->ip_version_traffic_class_and_flow_label &=
+ clib_host_to_net_u32 (IP6_NON_DSCP_BITS);
+ ip6h->ip_version_traffic_class_and_flow_label |=
+ clib_host_to_net_u32 (dscp << IP6_DSCP_SHIFT);
+ }
+ }
+}
+
+static_always_inline
+ u8 vnet_policer_police (vlib_main_t * vm,
+ vlib_buffer_t * b,
+ u32 policer_index,
+ u64 time_in_policer_periods,
+ policer_result_e packet_color)
+{
+ u8 act;
+ u32 len;
+ u32 col;
+ policer_read_response_type_st *pol;
+ vnet_policer_main_t *pm = &vnet_policer_main;
+
+ len = vlib_buffer_length_in_chain (vm, b);
+ pol = &pm->policers[policer_index];
+ col = vnet_police_packet (pol, len, packet_color, time_in_policer_periods);
+ act = pol->action[col];
+ if (PREDICT_TRUE (act == SSE2_QOS_ACTION_MARK_AND_TRANSMIT))
+ vnet_policer_mark (b, pol->mark_dscp[col]);
+
+ return act;
+}
+
+static inline uword
+vnet_policer_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame, vnet_policer_index_t which)
+{
+ u32 n_left_from, *from, *to_next;
+ vnet_policer_next_t next_index;
+ vnet_policer_main_t *pm = &vnet_policer_main;
+ u64 time_in_policer_periods;
+ u32 transmitted = 0;
+
+ time_in_policer_periods =
+ clib_cpu_time_now () >> POLICER_TICKS_PER_PERIOD_SHIFT;
+
+ 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 >= 4 && n_left_to_next >= 2)
+ {
+ u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+ u32 next0, next1;
+ u32 sw_if_index0, sw_if_index1;
+ u32 pi0 = 0, pi1 = 0;
+ u8 act0, act1;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *b2, *b3;
+
+ b2 = vlib_get_buffer (vm, from[2]);
+ b3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (b2, LOAD);
+ vlib_prefetch_buffer_header (b3, LOAD);
+ }
+
+ /* speculatively enqueue b0 and b1 to the current next frame */
+ to_next[0] = bi0 = from[0];
+ to_next[1] = bi1 = from[1];
+ from += 2;
+ to_next += 2;
+ n_left_from -= 2;
+ n_left_to_next -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ next0 = VNET_POLICER_NEXT_TRANSMIT;
+
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+ next1 = VNET_POLICER_NEXT_TRANSMIT;
+
+
+ if (which == VNET_POLICER_INDEX_BY_SW_IF_INDEX)
+ {
+ pi0 = pm->policer_index_by_sw_if_index[sw_if_index0];
+ pi1 = pm->policer_index_by_sw_if_index[sw_if_index1];
+ }
+
+ if (which == VNET_POLICER_INDEX_BY_OPAQUE)
+ {
+ pi0 = vnet_buffer (b0)->policer.index;
+ pi1 = vnet_buffer (b1)->policer.index;
+ }
+
+ if (which == VNET_POLICER_INDEX_BY_EITHER)
+ {
+ pi0 = vnet_buffer (b0)->policer.index;
+ pi0 = (pi0 != ~0) ? pi0 :
+ pm->policer_index_by_sw_if_index[sw_if_index0];
+ pi1 = vnet_buffer (b1)->policer.index;
+ pi1 = (pi1 != ~0) ? pi1 :
+ pm->policer_index_by_sw_if_index[sw_if_index1];
+ }
+
+ act0 = vnet_policer_police (vm, b0, pi0, time_in_policer_periods,
+ POLICE_CONFORM /* no chaining */ );
+
+ act1 = vnet_policer_police (vm, b1, pi1, time_in_policer_periods,
+ POLICE_CONFORM /* no chaining */ );
+
+ if (PREDICT_FALSE (act0 == SSE2_QOS_ACTION_DROP)) /* drop action */
+ {
+ next0 = VNET_POLICER_NEXT_DROP;
+ b0->error = node->errors[VNET_POLICER_ERROR_DROP];
+ }
+ else /* transmit or mark-and-transmit action */
+ {
+ transmitted++;
+ }
+
+ if (PREDICT_FALSE (act1 == SSE2_QOS_ACTION_DROP)) /* drop action */
+ {
+ next1 = VNET_POLICER_NEXT_DROP;
+ b1->error = node->errors[VNET_POLICER_ERROR_DROP];
+ }
+ else /* transmit or mark-and-transmit action */
+ {
+ transmitted++;
+ }
+
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
+ {
+ if (b0->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ vnet_policer_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ }
+ if (b1->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ vnet_policer_trace_t *t =
+ vlib_add_trace (vm, node, b1, sizeof (*t));
+ t->sw_if_index = sw_if_index1;
+ t->next_index = next1;
+ }
+ }
+
+ /* verify speculative enqueues, maybe switch current next frame */
+ 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;
+ vlib_buffer_t *b0;
+ u32 next0;
+ u32 sw_if_index0;
+ u32 pi0 = 0;
+ u8 act0;
+
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ next0 = VNET_POLICER_NEXT_TRANSMIT;
+
+ if (which == VNET_POLICER_INDEX_BY_SW_IF_INDEX)
+ pi0 = pm->policer_index_by_sw_if_index[sw_if_index0];
+
+ if (which == VNET_POLICER_INDEX_BY_OPAQUE)
+ pi0 = vnet_buffer (b0)->policer.index;
+
+ if (which == VNET_POLICER_INDEX_BY_EITHER)
+ {
+ pi0 = vnet_buffer (b0)->policer.index;
+ pi0 = (pi0 != ~0) ? pi0 :
+ pm->policer_index_by_sw_if_index[sw_if_index0];
+ }
+
+ act0 = vnet_policer_police (vm, b0, pi0, time_in_policer_periods,
+ POLICE_CONFORM /* no chaining */ );
+
+ if (PREDICT_FALSE (act0 == SSE2_QOS_ACTION_DROP)) /* drop action */
+ {
+ next0 = VNET_POLICER_NEXT_DROP;
+ b0->error = node->errors[VNET_POLICER_ERROR_DROP];
+ }
+ else /* transmit or mark-and-transmit action */
+ {
+ transmitted++;
+ }
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ vnet_policer_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->next_index = next0;
+ t->policer_index = pi0;
+ }
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ 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);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ VNET_POLICER_ERROR_TRANSMIT, transmitted);
+ return frame->n_vectors;
+}
+
+uword
+vnet_policer_by_sw_if_index (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return vnet_policer_inline (vm, node, frame,
+ VNET_POLICER_INDEX_BY_SW_IF_INDEX);
+}
+
+uword
+vnet_policer_by_opaque (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return vnet_policer_inline (vm, node, frame, VNET_POLICER_INDEX_BY_OPAQUE);
+}
+
+uword
+vnet_policer_by_either (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return vnet_policer_inline (vm, node, frame, VNET_POLICER_INDEX_BY_EITHER);
+}
+
+void
+vnet_policer_node_funcs_reference (void)
+{
+}
+
+
+#define TEST_CODE 1
+
+#ifdef TEST_CODE
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (policer_by_sw_if_index_node, static) = {
+ .function = vnet_policer_by_sw_if_index,
+ .name = "policer-by-sw-if-index",
+ .vector_size = sizeof (u32),
+ .format_trace = format_policer_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(vnet_policer_error_strings),
+ .error_strings = vnet_policer_error_strings,
+
+ .n_next_nodes = VNET_POLICER_N_NEXT,
+
+ /* edit / add dispositions here */
+ .next_nodes = {
+ [VNET_POLICER_NEXT_TRANSMIT] = "ethernet-input",
+ [VNET_POLICER_NEXT_DROP] = "error-drop",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (policer_by_sw_if_index_node,
+ vnet_policer_by_sw_if_index);
+/* *INDENT-ON* */
+
+
+int
+test_policer_add_del (u32 rx_sw_if_index, u8 * config_name, int is_add)
+{
+ vnet_policer_main_t *pm = &vnet_policer_main;
+ policer_read_response_type_st *template;
+ policer_read_response_type_st *policer;
+ vnet_hw_interface_t *rxhi;
+ uword *p;
+
+ rxhi = vnet_get_sup_hw_interface (pm->vnet_main, rx_sw_if_index);
+
+ /* Make sure caller didn't pass a vlan subif, etc. */
+ if (rxhi->sw_if_index != rx_sw_if_index)
+ return VNET_API_ERROR_INVALID_SW_IF_INDEX;
+
+ if (is_add)
+ {
+
+ p = hash_get_mem (pm->policer_config_by_name, config_name);
+
+ if (p == 0)
+ return -2;
+
+ template = pool_elt_at_index (pm->policer_templates, p[0]);
+
+ vnet_hw_interface_rx_redirect_to_node
+ (pm->vnet_main, rxhi->hw_if_index, policer_by_sw_if_index_node.index);
+
+ pool_get_aligned (pm->policers, policer, CLIB_CACHE_LINE_BYTES);
+
+ policer[0] = template[0];
+
+ vec_validate (pm->policer_index_by_sw_if_index, rx_sw_if_index);
+ pm->policer_index_by_sw_if_index[rx_sw_if_index]
+ = policer - pm->policers;
+ }
+ else
+ {
+ u32 pi;
+ vnet_hw_interface_rx_redirect_to_node (pm->vnet_main,
+ rxhi->hw_if_index,
+ ~0 /* disable */ );
+
+ pi = pm->policer_index_by_sw_if_index[rx_sw_if_index];
+ pm->policer_index_by_sw_if_index[rx_sw_if_index] = ~0;
+ pool_put_index (pm->policers, pi);
+ }
+
+ return 0;
+}
+
+static clib_error_t *
+test_policer_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ vnet_policer_main_t *pm = &vnet_policer_main;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u32 rx_sw_if_index;
+ int rv;
+ u8 *config_name = 0;
+ int rx_set = 0;
+ int is_add = 1;
+ int is_show = 0;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "intfc %U", unformat_vnet_sw_interface,
+ pm->vnet_main, &rx_sw_if_index))
+ rx_set = 1;
+ else if (unformat (line_input, "show"))
+ is_show = 1;
+ else if (unformat (line_input, "policer %s", &config_name))
+ ;
+ else if (unformat (line_input, "del"))
+ is_add = 0;
+ else
+ break;
+ }
+
+ if (rx_set == 0)
+ return clib_error_return (0, "interface not set");
+
+ if (is_show)
+ {
+ u32 pi = pm->policer_index_by_sw_if_index[rx_sw_if_index];
+ policer_read_response_type_st *policer;
+ policer = pool_elt_at_index (pm->policers, pi);
+
+ vlib_cli_output (vm, "%U", format_policer_instance, policer);
+ return 0;
+ }
+
+ if (is_add && config_name == 0)
+ {
+ return clib_error_return (0, "policer config name required");
+ }
+
+ rv = test_policer_add_del (rx_sw_if_index, config_name, is_add);
+
+ switch (rv)
+ {
+ case 0:
+ break;
+
+ default:
+ return clib_error_return
+ (0, "WARNING: vnet_vnet_policer_add_del returned %d", rv);
+ }
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (test_patch_command, static) = {
+ .path = "test policer",
+ .short_help =
+ "intfc <intfc> policer <policer-config-name> [del]",
+ .function = test_policer_command_fn,
+};
+/* *INDENT-ON* */
+
+#endif /* TEST_CODE */
+
+
+typedef struct
+{
+ u32 sw_if_index;
+ u32 next_index;
+ u32 table_index;
+ u32 offset;
+ u32 policer_index;
+} policer_classify_trace_t;
+
+static u8 *
+format_policer_classify_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 *);
+ policer_classify_trace_t *t = va_arg (*args, policer_classify_trace_t *);
+
+ s = format (s, "POLICER_CLASSIFY: sw_if_index %d next %d table %d offset %d"
+ " policer_index %d",
+ t->sw_if_index, t->next_index, t->table_index, t->offset,
+ t->policer_index);
+ return s;
+}
+
+#define foreach_policer_classify_error \
+_(MISS, "Policer classify misses") \
+_(HIT, "Policer classify hits") \
+_(CHAIN_HIT, "Polcier classify hits after chain walk") \
+_(DROP, "Policer classify action drop")
+
+typedef enum
+{
+#define _(sym,str) POLICER_CLASSIFY_ERROR_##sym,
+ foreach_policer_classify_error
+#undef _
+ POLICER_CLASSIFY_N_ERROR,
+} policer_classify_error_t;
+
+static char *policer_classify_error_strings[] = {
+#define _(sym,string) string,
+ foreach_policer_classify_error
+#undef _
+};
+
+static inline uword
+policer_classify_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ policer_classify_table_id_t tid)
+{
+ u32 n_left_from, *from, *to_next;
+ policer_classify_next_index_t next_index;
+ policer_classify_main_t *pcm = &policer_classify_main;
+ vnet_classify_main_t *vcm = pcm->vnet_classify_main;
+ f64 now = vlib_time_now (vm);
+ u32 hits = 0;
+ u32 misses = 0;
+ u32 chain_hits = 0;
+ u32 drop = 0;
+ u32 n_next_nodes;
+ u64 time_in_policer_periods;
+
+ time_in_policer_periods =
+ clib_cpu_time_now () >> POLICER_TICKS_PER_PERIOD_SHIFT;
+
+ n_next_nodes = node->n_next_nodes;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+
+ /* First pass: compute hashes */
+ while (n_left_from > 2)
+ {
+ vlib_buffer_t *b0, *b1;
+ u32 bi0, bi1;
+ u8 *h0, *h1;
+ u32 sw_if_index0, sw_if_index1;
+ u32 table_index0, table_index1;
+ vnet_classify_table_t *t0, *t1;
+
+ /* Prefetch next iteration */
+ {
+ vlib_buffer_t *p1, *p2;
+
+ p1 = vlib_get_buffer (vm, from[1]);
+ p2 = vlib_get_buffer (vm, from[2]);
+
+ vlib_prefetch_buffer_header (p1, STORE);
+ CLIB_PREFETCH (p1->data, CLIB_CACHE_LINE_BYTES, STORE);
+ vlib_prefetch_buffer_header (p2, STORE);
+ CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
+ }
+
+ bi0 = from[0];
+ b0 = vlib_get_buffer (vm, bi0);
+ h0 = b0->data;
+
+ bi1 = from[1];
+ b1 = vlib_get_buffer (vm, bi1);
+ h1 = b1->data;
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ table_index0 =
+ pcm->classify_table_index_by_sw_if_index[tid][sw_if_index0];
+
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+ table_index1 =
+ pcm->classify_table_index_by_sw_if_index[tid][sw_if_index1];
+
+ t0 = pool_elt_at_index (vcm->tables, table_index0);
+
+ t1 = pool_elt_at_index (vcm->tables, table_index1);
+
+ vnet_buffer (b0)->l2_classify.hash =
+ vnet_classify_hash_packet (t0, (u8 *) h0);
+
+ vnet_classify_prefetch_bucket (t0, vnet_buffer (b0)->l2_classify.hash);
+
+ vnet_buffer (b1)->l2_classify.hash =
+ vnet_classify_hash_packet (t1, (u8 *) h1);
+
+ vnet_classify_prefetch_bucket (t1, vnet_buffer (b1)->l2_classify.hash);
+
+ vnet_buffer (b0)->l2_classify.table_index = table_index0;
+
+ vnet_buffer (b1)->l2_classify.table_index = table_index1;
+
+ from += 2;
+ n_left_from -= 2;
+ }
+
+ while (n_left_from > 0)
+ {
+ vlib_buffer_t *b0;
+ u32 bi0;
+ u8 *h0;
+ u32 sw_if_index0;
+ u32 table_index0;
+ vnet_classify_table_t *t0;
+
+ bi0 = from[0];
+ b0 = vlib_get_buffer (vm, bi0);
+ h0 = b0->data;
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ table_index0 =
+ pcm->classify_table_index_by_sw_if_index[tid][sw_if_index0];
+
+ t0 = pool_elt_at_index (vcm->tables, table_index0);
+ vnet_buffer (b0)->l2_classify.hash =
+ vnet_classify_hash_packet (t0, (u8 *) h0);
+
+ vnet_buffer (b0)->l2_classify.table_index = table_index0;
+ vnet_classify_prefetch_bucket (t0, vnet_buffer (b0)->l2_classify.hash);
+
+ from++;
+ n_left_from--;
+ }
+
+ next_index = node->cached_next_index;
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ /* Not enough load/store slots to dual loop... */
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0 = POLICER_CLASSIFY_NEXT_INDEX_DROP;
+ u32 table_index0;
+ vnet_classify_table_t *t0;
+ vnet_classify_entry_t *e0;
+ u64 hash0;
+ u8 *h0;
+ u8 act0;
+
+ /* Stride 3 seems to work best */
+ if (PREDICT_TRUE (n_left_from > 3))
+ {
+ vlib_buffer_t *p1 = vlib_get_buffer (vm, from[3]);
+ vnet_classify_table_t *tp1;
+ u32 table_index1;
+ u64 phash1;
+
+ table_index1 = vnet_buffer (p1)->l2_classify.table_index;
+
+ if (PREDICT_TRUE (table_index1 != ~0))
+ {
+ tp1 = pool_elt_at_index (vcm->tables, table_index1);
+ phash1 = vnet_buffer (p1)->l2_classify.hash;
+ vnet_classify_prefetch_entry (tp1, phash1);
+ }
+ }
+
+ /* Speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ h0 = b0->data;
+ table_index0 = vnet_buffer (b0)->l2_classify.table_index;
+ e0 = 0;
+ t0 = 0;
+
+ if (tid == POLICER_CLASSIFY_TABLE_L2)
+ {
+ /* Feature bitmap update */
+ vnet_buffer (b0)->l2.feature_bitmap &=
+ ~L2INPUT_FEAT_POLICER_CLAS;
+ /* Determine the next node */
+ next0 =
+ feat_bitmap_get_next_node_index (pcm->feat_next_node_index,
+ vnet_buffer (b0)->
+ l2.feature_bitmap);
+ }
+ else
+ vnet_get_config_data (pcm->vnet_config_main[tid],
+ &b0->current_config_index, &next0,
+ /* # bytes of config data */ 0);
+
+ vnet_buffer (b0)->l2_classify.opaque_index = ~0;
+
+ if (PREDICT_TRUE (table_index0 != ~0))
+ {
+ hash0 = vnet_buffer (b0)->l2_classify.hash;
+ t0 = pool_elt_at_index (vcm->tables, table_index0);
+ e0 = vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
+
+ if (e0)
+ {
+ act0 = vnet_policer_police (vm,
+ b0,
+ e0->next_index,
+ time_in_policer_periods,
+ e0->opaque_index);
+ if (PREDICT_FALSE (act0 == SSE2_QOS_ACTION_DROP))
+ {
+ next0 = POLICER_CLASSIFY_NEXT_INDEX_DROP;
+ b0->error = node->errors[POLICER_CLASSIFY_ERROR_DROP];
+ drop++;
+ }
+ hits++;
+ }
+ else
+ {
+ while (1)
+ {
+ if (PREDICT_TRUE (t0->next_table_index != ~0))
+ {
+ t0 = pool_elt_at_index (vcm->tables,
+ t0->next_table_index);
+ }
+ else
+ {
+ next0 = (t0->miss_next_index < n_next_nodes) ?
+ t0->miss_next_index : next0;
+ misses++;
+ break;
+ }
+
+ hash0 = vnet_classify_hash_packet (t0, (u8 *) h0);
+ e0 =
+ vnet_classify_find_entry (t0, (u8 *) h0, hash0, now);
+ if (e0)
+ {
+ act0 = vnet_policer_police (vm,
+ b0,
+ e0->next_index,
+ time_in_policer_periods,
+ e0->opaque_index);
+ if (PREDICT_FALSE (act0 == SSE2_QOS_ACTION_DROP))
+ {
+ next0 = POLICER_CLASSIFY_NEXT_INDEX_DROP;
+ b0->error =
+ node->errors[POLICER_CLASSIFY_ERROR_DROP];
+ drop++;
+ }
+ hits++;
+ chain_hits++;
+ break;
+ }
+ }
+ }
+ }
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ policer_classify_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ t->next_index = next0;
+ t->table_index = t0 ? t0 - vcm->tables : ~0;
+ t->offset = (e0 && t0) ? vnet_classify_get_offset (t0, e0) : ~0;
+ t->policer_index = e0 ? e0->next_index : ~0;
+ }
+
+ /* Verify speculative enqueue, maybe switch current next frame */
+ 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);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ POLICER_CLASSIFY_ERROR_MISS, misses);
+ vlib_node_increment_counter (vm, node->node_index,
+ POLICER_CLASSIFY_ERROR_HIT, hits);
+ vlib_node_increment_counter (vm, node->node_index,
+ POLICER_CLASSIFY_ERROR_CHAIN_HIT, chain_hits);
+ vlib_node_increment_counter (vm, node->node_index,
+ POLICER_CLASSIFY_ERROR_DROP, drop);
+
+ return frame->n_vectors;
+}
+
+static uword
+ip4_policer_classify (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return policer_classify_inline (vm, node, frame,
+ POLICER_CLASSIFY_TABLE_IP4);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip4_policer_classify_node) = {
+ .function = ip4_policer_classify,
+ .name = "ip4-policer-classify",
+ .vector_size = sizeof (u32),
+ .format_trace = format_policer_classify_trace,
+ .n_errors = ARRAY_LEN(policer_classify_error_strings),
+ .error_strings = policer_classify_error_strings,
+ .n_next_nodes = POLICER_CLASSIFY_NEXT_INDEX_N_NEXT,
+ .next_nodes = {
+ [POLICER_CLASSIFY_NEXT_INDEX_DROP] = "error-drop",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip4_policer_classify_node, ip4_policer_classify);
+/* *INDENT-ON* */
+
+static uword
+ip6_policer_classify (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return policer_classify_inline (vm, node, frame,
+ POLICER_CLASSIFY_TABLE_IP6);
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_policer_classify_node) = {
+ .function = ip6_policer_classify,
+ .name = "ip6-policer-classify",
+ .vector_size = sizeof (u32),
+ .format_trace = format_policer_classify_trace,
+ .n_errors = ARRAY_LEN(policer_classify_error_strings),
+ .error_strings = policer_classify_error_strings,
+ .n_next_nodes = POLICER_CLASSIFY_NEXT_INDEX_N_NEXT,
+ .next_nodes = {
+ [POLICER_CLASSIFY_NEXT_INDEX_DROP] = "error-drop",
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_policer_classify_node, ip6_policer_classify);
+/* *INDENT-ON* */
+
+static uword
+l2_policer_classify (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return policer_classify_inline (vm, node, frame, POLICER_CLASSIFY_TABLE_L2);
+}
+
+VLIB_REGISTER_NODE (l2_policer_classify_node) =
+{
+ .function = l2_policer_classify,.name = "l2-policer-classify",.vector_size =
+ sizeof (u32),.format_trace = format_policer_classify_trace,.n_errors =
+ ARRAY_LEN (policer_classify_error_strings),.error_strings =
+ policer_classify_error_strings,.n_next_nodes =
+ POLICER_CLASSIFY_NEXT_INDEX_N_NEXT,.next_nodes =
+ {
+ [POLICER_CLASSIFY_NEXT_INDEX_DROP] = "error-drop",}
+,};
+
+VLIB_NODE_FUNCTION_MULTIARCH (l2_policer_classify_node, l2_policer_classify);
+
+
+static clib_error_t *
+policer_classify_init (vlib_main_t * vm)
+{
+ policer_classify_main_t *pcm = &policer_classify_main;
+
+ pcm->vlib_main = vm;
+ pcm->vnet_main = vnet_get_main ();
+ pcm->vnet_classify_main = &vnet_classify_main;
+
+ /* Initialize L2 feature next-node indexes */
+ feat_bitmap_init_next_nodes (vm,
+ l2_policer_classify_node.index,
+ L2INPUT_N_FEAT,
+ l2input_get_feat_names (),
+ pcm->feat_next_node_index);
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (policer_classify_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */