#include <vnet/l2/l2_output.h>
-// Feature graph node names
-static char * l2output_feat_names[] = {
+/* Feature graph node names */
+static char *l2output_feat_names[] = {
#define _(sym,name) name,
foreach_l2output_feat
#undef _
};
-char **l2output_get_feat_names(void) {
+char **
+l2output_get_feat_names (void)
+{
return l2output_feat_names;
}
l2output_main_t l2output_main;
-typedef struct {
- /* per-pkt trace data */
+typedef struct
+{
+ /* per-pkt trace data */
u8 src[6];
u8 dst[6];
u32 sw_if_index;
} l2output_trace_t;
/* packet trace format function */
-static u8 * format_l2output_trace (u8 * s, va_list * args)
+static u8 *
+format_l2output_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 *);
- l2output_trace_t * t = va_arg (*args, l2output_trace_t *);
-
+ l2output_trace_t *t = va_arg (*args, l2output_trace_t *);
+
s = format (s, "l2-output: sw_if_index %d dst %U src %U",
t->sw_if_index,
- format_ethernet_address, t->dst,
- format_ethernet_address, t->src);
+ format_ethernet_address, t->dst,
+ format_ethernet_address, t->src);
return s;
}
-#define foreach_l2output_error \
-_(L2OUTPUT, "L2 output packets") \
-_(EFP_DROP, "L2 EFP filter pre-rewrite drops") \
-_(VTR_DROP, "L2 output tag rewrite drops") \
-_(SHG_DROP, "L2 split horizon drops") \
-_(DROP, "L2 output drops")
-
-typedef enum {
-#define _(sym,str) L2OUTPUT_ERROR_##sym,
- foreach_l2output_error
-#undef _
- L2OUTPUT_N_ERROR,
-} l2output_error_t;
-
-static char * l2output_error_strings[] = {
+static char *l2output_error_strings[] = {
#define _(sym,string) string,
foreach_l2output_error
#undef _
};
-typedef enum {
- L2OUTPUT_NEXT_DROP,
- L2OUTPUT_N_NEXT,
-} l2output_next_t;
-
-// Return 0 if split horizon check passes, otherwise return non-zero
-// Packets should not be transmitted out an interface with the same
-// split-horizon group as the input interface, except if the shg is 0
-// in which case the check always passes.
+/**
+ * Check for split horizon violations.
+ * Return 0 if split horizon check passes, otherwise return non-zero.
+ * Packets should not be transmitted out an interface with the same
+ * split-horizon group as the input interface, except if the @c shg is 0
+ * in which case the check always passes.
+ */
static_always_inline u32
split_horizon_violation (u8 shg1, u8 shg2)
{
- if (PREDICT_TRUE (shg1 == 0)) {
- return 0;
- } else {
- return shg1 == shg2;
- }
+ if (PREDICT_TRUE (shg1 == 0))
+ {
+ return 0;
+ }
+ else
+ {
+ return shg1 == shg2;
+ }
}
+static vlib_node_registration_t l2output_node;
+
static uword
l2output_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
{
- u32 n_left_from, * from, * to_next;
+ u32 n_left_from, *from, *to_next;
l2output_next_t next_index;
- l2output_main_t * msm = &l2output_main;
+ l2output_main_t *msm = &l2output_main;
vlib_node_t *n = vlib_get_node (vm, l2output_node.index);
u32 node_counter_base_index = n->error_heap_index;
- vlib_error_main_t * em = &vm->error_main;
+ vlib_error_main_t *em = &vm->error_main;
u32 cached_sw_if_index;
u32 cached_next_index;
/* Invalidate cache */
cached_sw_if_index = ~0;
- cached_next_index = ~0; /* warning be gone */
+ cached_next_index = ~0; /* warning be gone */
from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors; /* number of packets to process */
+ n_left_from = frame->n_vectors; /* number of packets to process */
next_index = node->cached_next_index;
while (n_left_from > 0)
u32 n_left_to_next;
/* get space to enqueue frame to graph node "next_index" */
- vlib_get_next_frame (vm, node, next_index,
- to_next, n_left_to_next);
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left_from >= 6 && n_left_to_next >= 2)
{
- u32 bi0, bi1;
- vlib_buffer_t * b0, * b1;
- u32 next0, next1;
- u32 sw_if_index0, sw_if_index1;
- ethernet_header_t * h0, * h1;
- l2_output_config_t * config0, * config1;
- u32 feature_bitmap0, feature_bitmap1;
-
+ u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+ u32 next0, next1;
+ u32 sw_if_index0, sw_if_index1;
+ ethernet_header_t *h0, *h1;
+ l2_output_config_t *config0, *config1;
+ u32 feature_bitmap0, feature_bitmap1;
+
/* Prefetch next iteration. */
{
- vlib_buffer_t * p2, * p3, * p4 , * p5;
- u32 sw_if_index2, sw_if_index3;
-
+ vlib_buffer_t *p2, *p3, *p4, *p5;
+ u32 sw_if_index2, sw_if_index3;
+
p2 = vlib_get_buffer (vm, from[2]);
p3 = vlib_get_buffer (vm, from[3]);
p4 = vlib_get_buffer (vm, from[4]);
p5 = vlib_get_buffer (vm, from[5]);
-
- // Prefetch the buffer header for the N+2 loop iteration
+
+ /* Prefetch the buffer header for the N+2 loop iteration */
vlib_prefetch_buffer_header (p4, LOAD);
vlib_prefetch_buffer_header (p5, LOAD);
- // Note: no need to prefetch packet data. This node doesn't reference it.
-
- // Prefetch the input config for the N+1 loop iteration
- // This depends on the buffer header above
- sw_if_index2 = vnet_buffer(p2)->sw_if_index[VLIB_TX];
- sw_if_index3 = vnet_buffer(p3)->sw_if_index[VLIB_TX];
- CLIB_PREFETCH (&msm->configs[sw_if_index2], CLIB_CACHE_LINE_BYTES, LOAD);
- CLIB_PREFETCH (&msm->configs[sw_if_index3], CLIB_CACHE_LINE_BYTES, LOAD);
+ /*
+ * Note: no need to prefetch packet data.
+ * This node doesn't reference it.
+ *
+ * Prefetch the input config for the N+1 loop iteration
+ * This depends on the buffer header above
+ */
+ sw_if_index2 = vnet_buffer (p2)->sw_if_index[VLIB_TX];
+ sw_if_index3 = vnet_buffer (p3)->sw_if_index[VLIB_TX];
+ CLIB_PREFETCH (&msm->configs[sw_if_index2], CLIB_CACHE_LINE_BYTES,
+ LOAD);
+ CLIB_PREFETCH (&msm->configs[sw_if_index3], CLIB_CACHE_LINE_BYTES,
+ LOAD);
}
- /* speculatively enqueue b0 and b1 to the current next frame */
- /* bi is "buffer index", b is pointer to the buffer */
+ /* speculatively enqueue b0 and b1 to the current next frame */
+ /* bi is "buffer index", b is pointer to the buffer */
to_next[0] = bi0 = from[0];
to_next[1] = bi1 = from[1];
from += 2;
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
-
- /* TX interface handles */
- sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_TX];
- sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_TX];
-
- if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)))
- {
- h0 = vlib_buffer_get_current (b0);
- h1 = vlib_buffer_get_current (b1);
- if (b0->flags & VLIB_BUFFER_IS_TRACED)
- {
- l2output_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- memcpy(t->src, h0->src_address, 6);
- memcpy(t->dst, h0->dst_address, 6);
- }
- if (b1->flags & VLIB_BUFFER_IS_TRACED)
- {
- l2output_trace_t *t =
- vlib_add_trace (vm, node, b1, sizeof (*t));
- t->sw_if_index = sw_if_index1;
- memcpy(t->src, h1->src_address, 6);
- memcpy(t->dst, h1->dst_address, 6);
- }
- }
-
- em->counters[node_counter_base_index + L2OUTPUT_ERROR_L2OUTPUT] += 2;
-
- // Get config for the output interface
- config0 = vec_elt_at_index(msm->configs, sw_if_index0);
- config1 = vec_elt_at_index(msm->configs, sw_if_index1);
-
- // Get features from the config
- // TODO: mask out any non-applicable features
- feature_bitmap0 = config0->feature_bitmap;
- feature_bitmap1 = config1->feature_bitmap;
-
- // Determine next node
- l2_output_dispatch (msm->vlib_main,
- msm->vnet_main,
- node,
- l2output_node.index,
- &cached_sw_if_index,
- &cached_next_index,
- &msm->next_nodes,
- b0,
- sw_if_index0,
- feature_bitmap0,
- &next0);
-
- l2_output_dispatch (msm->vlib_main,
- msm->vnet_main,
- node,
- l2output_node.index,
- &cached_sw_if_index,
- &cached_next_index,
- &msm->next_nodes,
- b1,
- sw_if_index1,
- feature_bitmap1,
- &next1);
-
- // Perform output vlan tag rewrite and the pre-vtr EFP filter check.
- // The EFP Filter only needs to be run if there is an output VTR
- // configured. The flag for the post-vtr EFP Filter node is used
- // to trigger the pre-vtr check as well.
-
- if (PREDICT_FALSE (config0->output_vtr.push_and_pop_bytes)) {
- // Perform pre-vtr EFP filter check if configured
- u32 failed1 = (feature_bitmap0 & L2OUTPUT_FEAT_EFP_FILTER) &&
- (l2_efp_filter_process(b0, &(config0->input_vtr)));
- u32 failed2 = l2_vtr_process(b0, &(config0->output_vtr));
-
- if (PREDICT_FALSE (failed1 | failed2)) {
- next0 = L2OUTPUT_NEXT_DROP;
- if (failed2) {
- b0->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
- }
- if (failed1) {
- b0->error = node->errors[L2OUTPUT_ERROR_EFP_DROP];
- }
- }
+
+ /* TX interface handles */
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
+ {
+ h0 = vlib_buffer_get_current (b0);
+ h1 = vlib_buffer_get_current (b1);
+ if (b0->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ l2output_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ clib_memcpy (t->src, h0->src_address, 6);
+ clib_memcpy (t->dst, h0->dst_address, 6);
+ }
+ if (b1->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ l2output_trace_t *t =
+ vlib_add_trace (vm, node, b1, sizeof (*t));
+ t->sw_if_index = sw_if_index1;
+ clib_memcpy (t->src, h1->src_address, 6);
+ clib_memcpy (t->dst, h1->dst_address, 6);
+ }
}
- if (PREDICT_FALSE (config1->output_vtr.push_and_pop_bytes)) {
- // Perform pre-vtr EFP filter check if configured
- u32 failed1 = (feature_bitmap1 & L2OUTPUT_FEAT_EFP_FILTER) &&
- (l2_efp_filter_process(b1, &(config1->input_vtr)));
- u32 failed2 = l2_vtr_process(b1, &(config1->output_vtr));
-
- if (PREDICT_FALSE (failed1 | failed2)) {
- next1 = L2OUTPUT_NEXT_DROP;
- if (failed2) {
- b1->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
- }
- if (failed1) {
- b1->error = node->errors[L2OUTPUT_ERROR_EFP_DROP];
- }
- }
+ em->counters[node_counter_base_index + L2OUTPUT_ERROR_L2OUTPUT] +=
+ 2;
+
+ /* Get config for the output interface */
+ config0 = vec_elt_at_index (msm->configs, sw_if_index0);
+ config1 = vec_elt_at_index (msm->configs, sw_if_index1);
+
+ /*
+ * Get features from the config
+ * TODO: mask out any non-applicable features
+ */
+ feature_bitmap0 = config0->feature_bitmap;
+ feature_bitmap1 = config1->feature_bitmap;
+
+ /* Determine next node */
+ l2_output_dispatch (msm->vlib_main,
+ msm->vnet_main,
+ node,
+ l2output_node.index,
+ &cached_sw_if_index,
+ &cached_next_index,
+ &msm->next_nodes,
+ b0, sw_if_index0, feature_bitmap0, &next0);
+
+ l2_output_dispatch (msm->vlib_main,
+ msm->vnet_main,
+ node,
+ l2output_node.index,
+ &cached_sw_if_index,
+ &cached_next_index,
+ &msm->next_nodes,
+ b1, sw_if_index1, feature_bitmap1, &next1);
+
+ if (PREDICT_FALSE (config0->out_vtr_flag))
+ {
+ /* Perform pre-vtr EFP filter check if configured */
+ if (config0->output_vtr.push_and_pop_bytes)
+ {
+ /*
+ * Perform output vlan tag rewrite and the pre-vtr EFP filter check.
+ * The EFP Filter only needs to be run if there is an output VTR
+ * configured. The flag for the post-vtr EFP Filter node is used
+ * to trigger the pre-vtr check as well.
+ */
+ u32 failed1 = (feature_bitmap0 & L2OUTPUT_FEAT_EFP_FILTER)
+ && (l2_efp_filter_process (b0, &(config0->input_vtr)));
+ u32 failed2 = l2_vtr_process (b0, &(config0->output_vtr));
+
+ if (PREDICT_FALSE (failed1 | failed2))
+ {
+ next0 = L2OUTPUT_NEXT_DROP;
+ if (failed2)
+ {
+ b0->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
+ }
+ if (failed1)
+ {
+ b0->error = node->errors[L2OUTPUT_ERROR_EFP_DROP];
+ }
+ }
+ }
+ // perform the PBB rewrite
+ else if (config0->output_pbb_vtr.push_and_pop_bytes)
+ {
+ u32 failed =
+ l2_pbb_process (b0, &(config0->output_pbb_vtr));
+ if (PREDICT_FALSE (failed))
+ {
+ next0 = L2OUTPUT_NEXT_DROP;
+ b0->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
+ }
+ }
}
-
- // Perform the split horizon check
- // The check can only fail for non-zero shg's
- if (PREDICT_FALSE (config0->shg + config1->shg)) {
- // one of the checks might fail, check both
- if (split_horizon_violation (config0->shg, vnet_buffer(b0)->l2.shg)) {
- next0 = L2OUTPUT_NEXT_DROP;
- b0->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
- }
- if (split_horizon_violation (config1->shg, vnet_buffer(b1)->l2.shg)) {
- next1 = L2OUTPUT_NEXT_DROP;
- b1->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
- }
+ if (PREDICT_FALSE (config1->out_vtr_flag))
+ {
+ /* Perform pre-vtr EFP filter check if configured */
+ if (config1->output_vtr.push_and_pop_bytes)
+ {
+ u32 failed1 = (feature_bitmap1 & L2OUTPUT_FEAT_EFP_FILTER)
+ && (l2_efp_filter_process (b1, &(config1->input_vtr)));
+ u32 failed2 = l2_vtr_process (b1, &(config1->output_vtr));
+
+ if (PREDICT_FALSE (failed1 | failed2))
+ {
+ next1 = L2OUTPUT_NEXT_DROP;
+ if (failed2)
+ {
+ b1->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
+ }
+ if (failed1)
+ {
+ b1->error = node->errors[L2OUTPUT_ERROR_EFP_DROP];
+ }
+ }
+ }
+ // perform the PBB rewrite
+ else if (config1->output_pbb_vtr.push_and_pop_bytes)
+ {
+ u32 failed =
+ l2_pbb_process (b0, &(config1->output_pbb_vtr));
+ if (PREDICT_FALSE (failed))
+ {
+ next1 = L2OUTPUT_NEXT_DROP;
+ b1->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
+ }
+ }
}
- /* verify speculative enqueues, maybe switch current next frame */
- /* if next0==next1==next_index then nothing special needs to be done */
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
- to_next, n_left_to_next,
- bi0, bi1, next0, next1);
- }
-
+ /*
+ * Perform the split horizon check
+ * The check can only fail for non-zero shg's
+ */
+ if (PREDICT_FALSE (config0->shg + config1->shg))
+ {
+ /* one of the checks might fail, check both */
+ if (split_horizon_violation
+ (config0->shg, vnet_buffer (b0)->l2.shg))
+ {
+ next0 = L2OUTPUT_NEXT_DROP;
+ b0->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
+ }
+ if (split_horizon_violation
+ (config1->shg, vnet_buffer (b1)->l2.shg))
+ {
+ next1 = L2OUTPUT_NEXT_DROP;
+ b1->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
+ }
+ }
+
+ /* verify speculative enqueues, maybe switch current next frame */
+ /* if next0==next1==next_index then nothing special needs to be done */
+ 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;
- ethernet_header_t * h0;
- l2_output_config_t *config0;
- u32 feature_bitmap0;
-
- /* speculatively enqueue b0 to the current next frame */
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0;
+ u32 sw_if_index0;
+ ethernet_header_t *h0;
+ l2_output_config_t *config0;
+ u32 feature_bitmap0;
+
+ /* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
to_next[0] = bi0;
from += 1;
b0 = vlib_get_buffer (vm, bi0);
- sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_TX];
-
- if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED))) {
- l2output_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- h0 = vlib_buffer_get_current (b0);
- memcpy(t->src, h0->src_address, 6);
- memcpy(t->dst, h0->dst_address, 6);
- }
-
- em->counters[node_counter_base_index + L2OUTPUT_ERROR_L2OUTPUT] += 1;
-
- // Get config for the output interface
- config0 = vec_elt_at_index(msm->configs, sw_if_index0);
-
- // Get features from the config
- // TODO: mask out any non-applicable features
- feature_bitmap0 = config0->feature_bitmap;
-
- // Determine next node
- l2_output_dispatch (msm->vlib_main,
- msm->vnet_main,
- node,
- l2output_node.index,
- &cached_sw_if_index,
- &cached_next_index,
- &msm->next_nodes,
- b0,
- sw_if_index0,
- feature_bitmap0,
- &next0);
-
- // Perform output vlan tag rewrite and the pre-vtr EFP filter check.
- // The EFP Filter only needs to be run if there is an output VTR
- // configured. The flag for the post-vtr EFP Filter node is used
- // to trigger the pre-vtr check as well.
-
- if (config0->output_vtr.push_and_pop_bytes) {
- // Perform pre-vtr EFP filter check if configured
- u32 failed1 = (feature_bitmap0 & L2OUTPUT_FEAT_EFP_FILTER) &&
- (l2_efp_filter_process(b0, &(config0->input_vtr)));
- u32 failed2 = l2_vtr_process(b0, &(config0->output_vtr));
-
- if (PREDICT_FALSE (failed1 | failed2)) {
- next0 = L2OUTPUT_NEXT_DROP;
- if (failed2) {
- b0->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
- }
- if (failed1) {
- b0->error = node->errors[L2OUTPUT_ERROR_EFP_DROP];
- }
- }
- }
-
- // Perform the split horizon check
- if (PREDICT_FALSE (split_horizon_violation (config0->shg, vnet_buffer(b0)->l2.shg))) {
- next0 = L2OUTPUT_NEXT_DROP;
- b0->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
- }
-
- /* verify speculative enqueue, maybe switch current next frame */
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ l2output_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ h0 = vlib_buffer_get_current (b0);
+ clib_memcpy (t->src, h0->src_address, 6);
+ clib_memcpy (t->dst, h0->dst_address, 6);
+ }
+
+ em->counters[node_counter_base_index +
+ L2OUTPUT_ERROR_L2OUTPUT] += 1;
+
+ /* Get config for the output interface */
+ config0 = vec_elt_at_index (msm->configs, sw_if_index0);
+
+ /*
+ * Get features from the config
+ * TODO: mask out any non-applicable features
+ */
+ feature_bitmap0 = config0->feature_bitmap;
+
+ /* Determine next node */
+ l2_output_dispatch (msm->vlib_main,
+ msm->vnet_main,
+ node,
+ l2output_node.index,
+ &cached_sw_if_index,
+ &cached_next_index,
+ &msm->next_nodes,
+ b0, sw_if_index0, feature_bitmap0, &next0);
+
+ if (PREDICT_FALSE (config0->out_vtr_flag))
+ {
+ /*
+ * Perform output vlan tag rewrite and the pre-vtr EFP filter check.
+ * The EFP Filter only needs to be run if there is an output VTR
+ * configured. The flag for the post-vtr EFP Filter node is used
+ * to trigger the pre-vtr check as well.
+ */
+
+ if (config0->output_vtr.push_and_pop_bytes)
+ {
+ /* Perform pre-vtr EFP filter check if configured */
+ u32 failed1 = (feature_bitmap0 & L2OUTPUT_FEAT_EFP_FILTER)
+ && (l2_efp_filter_process (b0, &(config0->input_vtr)));
+ u32 failed2 = l2_vtr_process (b0, &(config0->output_vtr));
+
+ if (PREDICT_FALSE (failed1 | failed2))
+ {
+ next0 = L2OUTPUT_NEXT_DROP;
+ if (failed2)
+ {
+ b0->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
+ }
+ if (failed1)
+ {
+ b0->error = node->errors[L2OUTPUT_ERROR_EFP_DROP];
+ }
+ }
+ }
+ // perform the PBB rewrite
+ else if (config0->output_pbb_vtr.push_and_pop_bytes)
+ {
+ u32 failed =
+ l2_pbb_process (b0, &(config0->output_pbb_vtr));
+ if (PREDICT_FALSE (failed))
+ {
+ next0 = L2OUTPUT_NEXT_DROP;
+ b0->error = node->errors[L2OUTPUT_ERROR_VTR_DROP];
+ }
+ }
+ }
+ /* Perform the split horizon check */
+ if (PREDICT_FALSE
+ (split_horizon_violation
+ (config0->shg, vnet_buffer (b0)->l2.shg)))
+ {
+ next0 = L2OUTPUT_NEXT_DROP;
+ b0->error = node->errors[L2OUTPUT_ERROR_SHG_DROP];
+ }
+
+ /* 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_REGISTER_NODE (l2output_node) = {
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (l2output_node,static) = {
.function = l2output_node_fn,
.name = "l2-output",
.vector_size = sizeof (u32),
.format_trace = format_l2output_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
-
+
.n_errors = ARRAY_LEN(l2output_error_strings),
.error_strings = l2output_error_strings,
/* edit / add dispositions here */
.next_nodes = {
[L2OUTPUT_NEXT_DROP] = "error-drop",
+ [L2OUTPUT_NEXT_DEL_TUNNEL] = "l2-output-del-tunnel",
},
};
+/* *INDENT-ON* */
-clib_error_t *l2output_init (vlib_main_t *vm)
+
+#define foreach_l2output_del_tunnel_error \
+_(DROP, "L2 output to deleted tunnel")
+
+static char *l2output_del_tunnel_error_strings[] = {
+#define _(sym,string) string,
+ foreach_l2output_del_tunnel_error
+#undef _
+};
+
+typedef enum
{
- l2output_main_t * mp = &l2output_main;
-
+#define _(sym,str) L2OUTPUT_DEL_TUNNEL_ERROR_##sym,
+ foreach_l2output_del_tunnel_error
+#undef _
+ L2OUTPUT_DEL_TUNNEL_N_ERROR,
+} l2output_del_tunnel_error_t;
+
+
+/**
+ * Output node for tunnels which was in L2 BD's but were deleted.
+ * On deletion of any tunnel which was on a L2 BD, its entry in
+ * l2_output_main table next_nodes.output_node_index_vec[sw_if_index]
+ * MUST be set to the value of L2OUTPUT_NEXT_DEL_TUNNEL. Thus, if there
+ * are stale entries in the L2FIB for this tunnel sw_if_index, l2-output
+ * will send packets for this sw_if_index to the l2-output-tunnel-del
+ * node which just setup the proper drop reason before sending packets
+ * to the error-drop node to drop the packet. Then, stale L2FIB entries
+ * for delted tunnels won't cause possible packet or memory corrpution.
+ */
+static vlib_node_registration_t l2output_del_tunnel_node;
+
+static uword
+l2output_del_tunnel_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next;
+ l2output_next_t next_index = 0;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors; /* number of packets to process */
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ /* get space to enqueue frame to graph node "next_index" */
+ 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;
+
+ 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);
+ b0->error = node->errors[L2OUTPUT_DEL_TUNNEL_ERROR_DROP];
+ b1->error = node->errors[L2OUTPUT_DEL_TUNNEL_ERROR_DROP];
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+
+ 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);
+ b0->error = node->errors[L2OUTPUT_DEL_TUNNEL_ERROR_DROP];
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ return frame->n_vectors;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (l2output_del_tunnel_node,static) = {
+ .function = l2output_del_tunnel_node_fn,
+ .name = "l2-output-del-tunnel",
+ .vector_size = sizeof (u32),
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(l2output_del_tunnel_error_strings),
+ .error_strings = l2output_del_tunnel_error_strings,
+
+ .n_next_nodes = 1,
+
+ /* edit / add dispositions here */
+ .next_nodes = {
+ [0] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+
+VLIB_NODE_FUNCTION_MULTIARCH (l2output_node, l2output_node_fn)
+ clib_error_t *l2output_init (vlib_main_t * vm)
+{
+ l2output_main_t *mp = &l2output_main;
+
mp->vlib_main = vm;
- mp->vnet_main = vnet_get_main();
+ mp->vnet_main = vnet_get_main ();
- // Create the config vector
- vec_validate(mp->configs, 100);
- // Until we hook up the CLI config, just create 100 sw interface entries and zero them
+ /* Create the config vector */
+ vec_validate (mp->configs, 100);
+ /* Until we hook up the CLI config, just create 100 sw interface entries and zero them */
- // Initialize the feature next-node indexes
- feat_bitmap_init_next_nodes(vm,
- l2output_node.index,
- L2OUTPUT_N_FEAT,
- l2output_get_feat_names(),
- mp->next_nodes.feat_next_node_index);
+ /* Initialize the feature next-node indexes */
+ feat_bitmap_init_next_nodes (vm,
+ l2output_node.index,
+ L2OUTPUT_N_FEAT,
+ l2output_get_feat_names (),
+ mp->next_nodes.feat_next_node_index);
- // Initialize the output node mapping table
- l2output_init_output_node_vec(&mp->next_nodes.output_node_index_vec);
+ /* Initialize the output node mapping table */
+ l2output_init_output_node_vec (&mp->next_nodes.output_node_index_vec);
return 0;
}
VLIB_INIT_FUNCTION (l2output_init);
-typedef struct {
+typedef struct
+{
u32 node_index;
u32 sw_if_index;
} output_node_mapping_rpc_args_t;
#if DPDK > 0
-static void output_node_rpc_callback
-( output_node_mapping_rpc_args_t * a);
+static void output_node_rpc_callback (output_node_mapping_rpc_args_t * a);
-static void output_node_mapping_send_rpc
-(u32 node_index,
- u32 sw_if_index)
+static void
+output_node_mapping_send_rpc (u32 node_index, u32 sw_if_index)
{
output_node_mapping_rpc_args_t args;
+ void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
args.node_index = node_index;
args.sw_if_index = sw_if_index;
- vl_api_rpc_call_main_thread (output_node_rpc_callback,
- (u8 *) &args, sizeof (args));
+ vl_api_rpc_call_main_thread (output_node_rpc_callback,
+ (u8 *) & args, sizeof (args));
}
#endif
-// Create a mapping in the next node mapping table for the given sw_if_index
-u32 l2output_create_output_node_mapping (
- vlib_main_t * vlib_main,
- vnet_main_t * vnet_main,
- u32 node_index, // index of current node
- u32 * output_node_index_vec,
- u32 sw_if_index) {
+/** Create a mapping in the next node mapping table for the given sw_if_index. */
+u32
+l2output_create_output_node_mapping (vlib_main_t * vlib_main, vnet_main_t * vnet_main, u32 node_index, /* index of current node */
+ u32 * output_node_index_vec,
+ u32 sw_if_index)
+{
- u32 next; // index of next graph node
+ u32 next; /* index of next graph node */
vnet_hw_interface_t *hw0;
- u32 *node;
+ u32 *node;
+
+ hw0 = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
+
#if DPDK > 0
- uword cpu_number;
+ uword cpu_number;
- cpu_number = os_get_cpu_number();
+ cpu_number = os_get_cpu_number ();
if (cpu_number)
{
+ u32 oldflags;
+
+ oldflags = __sync_fetch_and_or (&hw0->flags,
+ VNET_HW_INTERFACE_FLAG_L2OUTPUT_MAPPED);
+
+ if ((oldflags & VNET_HW_INTERFACE_FLAG_L2OUTPUT_MAPPED))
+ return L2OUTPUT_NEXT_DROP;
+
output_node_mapping_send_rpc (node_index, sw_if_index);
- return 0;
+ return L2OUTPUT_NEXT_DROP;
}
#endif
- hw0 = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
+ /* dynamically create graph node arc */
+ next = vlib_node_add_next (vlib_main, node_index, hw0->output_node_index);
- // dynamically create graph node arc
- next = vlib_node_add_next (vlib_main,
- node_index,
- hw0->output_node_index);
+ /* Initialize vector with the mapping */
- // Initialize vector with the mapping
-
- node = vec_elt_at_index(output_node_index_vec, sw_if_index);
+ node = vec_elt_at_index (output_node_index_vec, sw_if_index);
*node = next;
-
+
+ /* reset mapping bit, includes memory barrier */
+ __sync_fetch_and_and (&hw0->flags, ~VNET_HW_INTERFACE_FLAG_L2OUTPUT_MAPPED);
+
return next;
}
#if DPDK > 0
-void output_node_rpc_callback (output_node_mapping_rpc_args_t *a)
+void
+output_node_rpc_callback (output_node_mapping_rpc_args_t * a)
{
- vlib_main_t * vm = vlib_get_main();
- vnet_main_t * vnm = vnet_get_main();
- l2output_main_t * mp = &l2output_main;
+ vlib_main_t *vm = vlib_get_main ();
+ vnet_main_t *vnm = vnet_get_main ();
+ l2output_main_t *mp = &l2output_main;
- (void) l2output_create_output_node_mapping
- (vm, vnm, a->node_index, mp->next_nodes.output_node_index_vec,
+ (void) l2output_create_output_node_mapping
+ (vm, vnm, a->node_index, mp->next_nodes.output_node_index_vec,
a->sw_if_index);
}
#endif
-// Get a pointer to the config for the given interface
-l2_output_config_t * l2output_intf_config (u32 sw_if_index)
+/* Get a pointer to the config for the given interface */
+l2_output_config_t *
+l2output_intf_config (u32 sw_if_index)
{
- l2output_main_t * mp = &l2output_main;
-
- vec_validate(mp->configs, sw_if_index);
- return vec_elt_at_index(mp->configs, sw_if_index);
+ l2output_main_t *mp = &l2output_main;
+
+ vec_validate (mp->configs, sw_if_index);
+ return vec_elt_at_index (mp->configs, sw_if_index);
}
-// Enable (or disable) the feature in the bitmap for the given interface
-void l2output_intf_bitmap_enable (u32 sw_if_index,
- u32 feature_bitmap,
- u32 enable)
+/** Enable (or disable) the feature in the bitmap for the given interface. */
+void
+l2output_intf_bitmap_enable (u32 sw_if_index, u32 feature_bitmap, u32 enable)
{
- l2output_main_t * mp = &l2output_main;
+ l2output_main_t *mp = &l2output_main;
l2_output_config_t *config;
-
- vec_validate(mp->configs, sw_if_index);
- config = vec_elt_at_index(mp->configs, sw_if_index);
-
- if (enable) {
- config->feature_bitmap |= feature_bitmap;
- } else {
- config->feature_bitmap &= ~feature_bitmap;
- }
+
+ vec_validate (mp->configs, sw_if_index);
+ config = vec_elt_at_index (mp->configs, sw_if_index);
+
+ if (enable)
+ {
+ config->feature_bitmap |= feature_bitmap;
+ }
+ else
+ {
+ config->feature_bitmap &= ~feature_bitmap;
+ }
}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff