* For interfaces in Layer 3 mode, the packets will be routed.
*/
-#ifndef CLIB_MARCH_VARIANT
-
/* Feature graph node names */
static char *l2input_feat_names[] = {
#define _(sym,name) name,
}
u8 *
-format_l2_input_features (u8 * s, va_list * args)
+format_l2_input_feature_bitmap (u8 * s, va_list * args)
{
static char *display_names[] = {
#define _(sym,name) #sym,
}
return s;
}
-#endif /* CLIB_MARCH_VARIANT */
-
-typedef struct
-{
- /* per-pkt trace data */
- u8 dst_and_src[12];
- u32 next_index;
- u32 sw_if_index;
-} l2input_trace_t;
-
-/* packet trace format function */
-static u8 *
-format_l2input_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 *);
- l2input_trace_t *t = va_arg (*args, l2input_trace_t *);
-
- s = format (s, "l2-input: sw_if_index %d dst %U src %U",
- t->sw_if_index,
- format_ethernet_address, t->dst_and_src,
- format_ethernet_address, t->dst_and_src + 6);
- return s;
-}
-
-extern l2input_main_t l2input_main;
-
-#ifndef CLIB_MARCH_VARIANT
-l2input_main_t l2input_main;
-#endif /* CLIB_MARCH_VARIANT */
-
-#define foreach_l2input_error \
-_(L2INPUT, "L2 input packets") \
-_(DROP, "L2 input drops")
-
-typedef enum
-{
-#define _(sym,str) L2INPUT_ERROR_##sym,
- foreach_l2input_error
-#undef _
- L2INPUT_N_ERROR,
-} l2input_error_t;
-static char *l2input_error_strings[] = {
-#define _(sym,string) string,
- foreach_l2input_error
-#undef _
-};
-
-typedef enum
-{ /* */
- L2INPUT_NEXT_LEARN,
- L2INPUT_NEXT_FWD,
- L2INPUT_NEXT_DROP,
- L2INPUT_N_NEXT,
-} l2input_next_t;
-
-
-static_always_inline void
-classify_and_dispatch (l2input_main_t * msm, vlib_buffer_t * b0, u32 * next0)
+u8 *
+format_l2_input_features (u8 * s, va_list * args)
{
- /*
- * Load L2 input feature struct
- * Load bridge domain struct
- * Parse ethernet header to determine unicast/mcast/broadcast
- * take L2 input stat
- * classify packet as IP/UDP/TCP, control, other
- * mask feature bitmap
- * go to first node in bitmap
- * Later: optimize VTM
- *
- * For L2XC,
- * set tx sw-if-handle
- */
-
- u32 feat_mask = ~0;
- u32 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- ethernet_header_t *h0 = vlib_buffer_get_current (b0);
-
- /* Get config for the input interface */
- l2_input_config_t *config = vec_elt_at_index (msm->configs, sw_if_index0);
-
- /* Save split horizon group */
- vnet_buffer (b0)->l2.shg = config->shg;
-
- /* determine layer2 kind for stat and mask */
- if (PREDICT_FALSE (ethernet_address_cast (h0->dst_address)))
- {
- u8 *l3h0 = (u8 *) h0 + vnet_buffer (b0)->l2.l2_len;
-
-#define get_u16(addr) ( *((u16 *)(addr)) )
- u16 ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2));
- u8 protocol = ((ip6_header_t *) l3h0)->protocol;
-
- /* Disable bridge forwarding (flooding will execute instead if not xconnect) */
- feat_mask &= ~(L2INPUT_FEAT_FWD |
- L2INPUT_FEAT_UU_FLOOD |
- L2INPUT_FEAT_UU_FWD | L2INPUT_FEAT_GBP_FWD);
-
- if (ethertype != ETHERNET_TYPE_ARP)
- feat_mask &= ~(L2INPUT_FEAT_ARP_UFWD);
-
- /* Disable ARP-term for non-ARP and non-ICMP6 packet */
- if (ethertype != ETHERNET_TYPE_ARP &&
- (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6))
- feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
- /*
- * For packet from BVI - set SHG of ARP request or ICMPv6 neighbor
- * solicitation packet from BVI to 0 so it can also flood to VXLAN
- * tunnels or other ports with the same SHG as that of the BVI.
- */
- else if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
- L2INPUT_BVI))
- {
- if (ethertype == ETHERNET_TYPE_ARP)
- {
- ethernet_arp_header_t *arp0 = (ethernet_arp_header_t *) l3h0;
- if (arp0->opcode ==
- clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_request))
- vnet_buffer (b0)->l2.shg = 0;
- }
- else /* must be ICMPv6 */
- {
- ip6_header_t *iph0 = (ip6_header_t *) l3h0;
- icmp6_neighbor_solicitation_or_advertisement_header_t *ndh0;
- ndh0 = ip6_next_header (iph0);
- if (ndh0->icmp.type == ICMP6_neighbor_solicitation)
- vnet_buffer (b0)->l2.shg = 0;
- }
- }
- }
- else
- {
- /*
- * For packet from BVI - set SHG of unicast packet from BVI to 0 so it
- * is not dropped on output to VXLAN tunnels or other ports with the
- * same SHG as that of the BVI.
- */
- if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] ==
- L2INPUT_BVI))
- vnet_buffer (b0)->l2.shg = 0;
- }
-
-
- if (config->bridge)
- {
- /* Do bridge-domain processing */
- u16 bd_index0 = config->bd_index;
- /* save BD ID for next feature graph nodes */
- vnet_buffer (b0)->l2.bd_index = bd_index0;
-
- /* Get config for the bridge domain interface */
- l2_bridge_domain_t *bd_config =
- vec_elt_at_index (msm->bd_configs, bd_index0);
-
- /* Save bridge domain and interface seq_num */
- /* *INDENT-OFF* */
- l2fib_seq_num_t sn = {
- .swif = *l2fib_swif_seq_num(sw_if_index0),
- .bd = bd_config->seq_num,
- };
- /* *INDENT-ON* */
- vnet_buffer (b0)->l2.l2fib_sn = sn.as_u16;;
- vnet_buffer (b0)->l2.bd_age = bd_config->mac_age;
+ u32 sw_if_index = va_arg (*args, u32);
+ u32 verbose = va_arg (*args, u32);
- /*
- * Process bridge domain feature enables.
- * To perform learning/flooding/forwarding, the corresponding bit
- * must be enabled in both the input interface config and in the
- * bridge domain config. In the bd_bitmap, bits for features other
- * than learning/flooding/forwarding should always be set.
- */
- feat_mask = feat_mask & bd_config->feature_bitmap;
- }
- else if (config->xconnect)
- {
- /* Set the output interface */
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
- }
- else
- feat_mask = L2INPUT_FEAT_DROP;
+ l2_input_config_t *l2_input = l2input_intf_config (sw_if_index);
+ u32 fb = l2_input->feature_bitmap;
- /* mask out features from bitmap using packet type and bd config */
- u32 feature_bitmap = config->feature_bitmap & feat_mask;
+ /* intf input features are masked by bridge domain */
+ if (l2_input_is_bridge (l2_input))
+ fb &= l2_input->bd_feature_bitmap;
- /* save for next feature graph nodes */
- vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
+ s =
+ format (s, "\nl2-input:\n%U", format_l2_input_feature_bitmap, fb,
+ verbose);
- /* Determine the next node */
- *next0 = feat_bitmap_get_next_node_index (msm->feat_next_node_index,
- feature_bitmap);
+ return (s);
}
-static_always_inline uword
-l2input_node_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame,
- int do_trace)
+u8 *
+format_l2_input (u8 * s, va_list * args)
{
- u32 n_left_from, *from, *to_next;
- l2input_next_t next_index;
- l2input_main_t *msm = &l2input_main;
- vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors; /* number of packets to process */
- next_index = node->cached_next_index;
- vlib_get_buffers (vm, from, bufs, n_left_from);
+ u32 sw_if_index = va_arg (*args, u32);
+ l2_input_config_t *l2_input = l2input_intf_config (sw_if_index);
- while (n_left_from > 0)
+ /* intf input features are masked by bridge domain */
+ if (l2_input_is_bridge (l2_input))
{
- 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);
+ bd_main_t *bdm = &bd_main;
+ u32 bd_id = l2input_main.bd_configs[l2_input->bd_index].bd_id;
- while (n_left_from >= 8 && n_left_to_next >= 4)
- {
- u32 next0, next1, next2, next3;
- u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3;
-
- /* Prefetch next iteration. */
- {
-
- /* Prefetch the buffer header and packet for the N+2 loop iteration */
- vlib_prefetch_buffer_header (b[4], LOAD);
- vlib_prefetch_buffer_header (b[5], LOAD);
- vlib_prefetch_buffer_header (b[6], LOAD);
- vlib_prefetch_buffer_header (b[7], LOAD);
-
- CLIB_PREFETCH (b[4]->data, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (b[5]->data, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (b[6]->data, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (b[7]->data, CLIB_CACHE_LINE_BYTES, STORE);
-
- /*
- * Don't bother prefetching the bridge-domain config (which
- * depends on the input config above). Only a small number of
- * bridge domains are expected. Plus the structure is small
- * and several fit in a cache line.
- */
- }
-
- /* speculatively enqueue b0 and b1 to the current next frame */
- /* bi is "buffer index", b is pointer to the buffer */
-
- if (do_trace)
- {
- /* RX interface handles */
- sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
- sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_RX];
- sw_if_index2 = vnet_buffer (b[2])->sw_if_index[VLIB_RX];
- sw_if_index3 = vnet_buffer (b[3])->sw_if_index[VLIB_RX];
-
- if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
- {
- ethernet_header_t *h0 = vlib_buffer_get_current (b[0]);
- l2input_trace_t *t =
- vlib_add_trace (vm, node, b[0], sizeof (*t));
- t->sw_if_index = sw_if_index0;
- clib_memcpy_fast (t->dst_and_src, h0->dst_address,
- sizeof (h0->dst_address) +
- sizeof (h0->src_address));
- }
- if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
- {
- ethernet_header_t *h1 = vlib_buffer_get_current (b[1]);
- l2input_trace_t *t =
- vlib_add_trace (vm, node, b[1], sizeof (*t));
- t->sw_if_index = sw_if_index1;
- clib_memcpy_fast (t->dst_and_src, h1->dst_address,
- sizeof (h1->dst_address) +
- sizeof (h1->src_address));
- }
- if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
- {
- ethernet_header_t *h2 = vlib_buffer_get_current (b[2]);
- l2input_trace_t *t =
- vlib_add_trace (vm, node, b[2], sizeof (*t));
- t->sw_if_index = sw_if_index2;
- clib_memcpy_fast (t->dst_and_src, h2->dst_address,
- sizeof (h2->dst_address) +
- sizeof (h2->src_address));
- }
- if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
- {
- ethernet_header_t *h3 = vlib_buffer_get_current (b[3]);
- l2input_trace_t *t =
- vlib_add_trace (vm, node, b[3], sizeof (*t));
- t->sw_if_index = sw_if_index3;
- clib_memcpy_fast (t->dst_and_src, h3->dst_address,
- sizeof (h3->dst_address) +
- sizeof (h3->src_address));
- }
- }
-
- classify_and_dispatch (msm, b[0], &next0);
- classify_and_dispatch (msm, b[1], &next1);
- //show the better performance when clib_memcpy_fast is put here.
- clib_memcpy_fast (to_next, from, sizeof (from[0]) * 4);
- to_next += 4;
- classify_and_dispatch (msm, b[2], &next2);
- classify_and_dispatch (msm, b[3], &next3);
- b += 4;
- n_left_from -= 4;
- n_left_to_next -= 4;
-
- /* verify speculative enqueues, maybe switch current next frame */
- /* if next0==next1==next_index then nothing special needs to be done */
- vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
- to_next, n_left_to_next,
- from[0], from[1], from[2], from[3],
- next0, next1, next2, next3);
- from += 4;
- }
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 next0;
- u32 sw_if_index0;
-
- /* speculatively enqueue b0 to the current next frame */
-
- if (do_trace && PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
- {
- ethernet_header_t *h0 = vlib_buffer_get_current (b[0]);
- l2input_trace_t *t =
- vlib_add_trace (vm, node, b[0], sizeof (*t));
- sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
- t->sw_if_index = sw_if_index0;
- clib_memcpy_fast (t->dst_and_src, h0->dst_address,
- sizeof (h0->dst_address) +
- sizeof (h0->src_address));
- }
-
- classify_and_dispatch (msm, b[0], &next0);
- b += 1;
- to_next[0] = from[0];
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- /* verify speculative enqueue, maybe switch current next frame */
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next,
- from[0], next0);
- from += 1;
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ s = format (s, " L2 bridge bd-id %d idx %d shg %d %s",
+ bd_id, bd_find_index (bdm, bd_id), l2_input->shg,
+ l2_input_is_bvi (l2_input) ? "bvi" : " ");
}
+ else if (l2_input_is_xconnect (l2_input))
+ s = format (s, " L2 xconnect %U",
+ format_vnet_sw_if_index_name, vnet_get_main (),
+ l2_input->output_sw_if_index);
- vlib_node_increment_counter (vm, l2input_node.index,
- L2INPUT_ERROR_L2INPUT, frame->n_vectors);
-
- return frame->n_vectors;
+ return (s);
}
-VLIB_NODE_FN (l2input_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
- return l2input_node_inline (vm, node, frame, 1 /* do_trace */ );
- return l2input_node_inline (vm, node, frame, 0 /* do_trace */ );
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (l2input_node) = {
- .name = "l2-input",
- .vector_size = sizeof (u32),
- .format_trace = format_l2input_trace,
- .format_buffer = format_ethernet_header_with_length,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(l2input_error_strings),
- .error_strings = l2input_error_strings,
-
- .n_next_nodes = L2INPUT_N_NEXT,
-
- /* edit / add dispositions here */
- .next_nodes = {
- [L2INPUT_NEXT_LEARN] = "l2-learn",
- [L2INPUT_NEXT_FWD] = "l2-fwd",
- [L2INPUT_NEXT_DROP] = "error-drop",
- },
-};
-/* *INDENT-ON* */
-
-#ifndef CLIB_MARCH_VARIANT
clib_error_t *
l2input_init (vlib_main_t * vm)
{
/* Get packets RX'd from L2 interfaces */
ethernet_register_l2_input (vm, l2input_node.index);
- /* Create the config vector */
- vec_validate (mp->configs, 100);
- /* create 100 sw interface entries and zero them */
-
/* Initialize the feature next-node indexes */
feat_bitmap_init_next_nodes (vm,
l2input_node.index,
intf_config = l2input_intf_config (sw_if_index);
- if (intf_config->bridge && intf_config->bvi)
+ if (l2_input_is_bridge (intf_config) && l2_input_is_bvi (intf_config))
{
/* delete and re-add l2fib entry for the bvi interface */
l2fib_del_entry (old_address, intf_config->bd_index, sw_if_index);
}
}
+walk_rc_t
+l2input_recache (u32 bd_index, u32 sw_if_index)
+{
+ l2_input_config_t *input;
+ l2_bridge_domain_t *bd;
+
+ bd = bd_get (bd_index);
+ input = l2input_intf_config (sw_if_index);
+
+ input->bd_mac_age = bd->mac_age;
+ input->bd_seq_num = bd->seq_num;
+ input->bd_feature_bitmap = bd->feature_bitmap;
+
+ return (WALK_CONTINUE);
+}
+
+void
+l2_input_seq_num_inc (u32 sw_if_index)
+{
+ l2_input_config_t *input;
+
+ input = vec_elt_at_index (l2input_main.configs, sw_if_index);
+
+ input->seq_num++;
+}
+
/**
* Set the subinterface to run in l2 or l3 mode.
* For L3 mode, just the sw_if_index is specified.
u32 shg, /* the bridged interface split horizon group */
u32 xc_sw_if_index) /* peer interface for xconnect */
{
- l2input_main_t *mp = &l2input_main;
l2output_main_t *l2om = &l2output_main;
vnet_main_t *vnm = vnet_get_main ();
vnet_hw_interface_t *hi;
if (l2fib_main.mac_table_initialized == 0)
l2fib_table_init ();
- if (config->bridge)
+ if (l2_input_is_bridge (config))
{
/* Interface is already in bridge mode. Undo the existing config. */
- bd_config = vec_elt_at_index (mp->bd_configs, config->bd_index);
+ bd_config = bd_get (config->bd_index);
/* remove interface from flood vector */
bd_remove_member (bd_config, sw_if_index);
vnet_sw_interface_t *si;
bd_config->bvi_sw_if_index = ~0;
- config->bvi = 0;
+ config->flags &= ~L2_INPUT_FLAG_BVI;
/* delete the l2fib entry for the bvi interface */
l2fib_del_entry (hi->hw_address, config->bd_index, sw_if_index);
(bd_config->feature_bitmap & L2INPUT_FEAT_LEARN))
l2fib_flush_int_mac (vm, sw_if_index);
+ bd_input_walk (config->bd_index, l2input_recache, NULL);
l2_if_adjust--;
}
- else if (config->xconnect)
+ else if (l2_input_is_xconnect (config))
{
l2_if_adjust--;
}
{
/* Set L2 config to BD index 0 so that if any packet accidentally
* came in on L2 path, it will be dropped in BD 0 */
- config->xconnect = 0;
- config->bridge = 0;
+ config->flags = L2_INPUT_FLAG_NONE;
config->shg = 0;
config->bd_index = 0;
config->feature_bitmap = L2INPUT_FEAT_DROP;
if (!hi)
return MODE_ERROR_ETH; /* non-ethernet */
- config->xconnect = 0;
- config->bridge = 1;
+ config->flags = L2_INPUT_FLAG_BRIDGE;
config->bd_index = bd_index;
- *l2fib_valid_swif_seq_num (sw_if_index) += 1;
+ l2_input_seq_num_inc (sw_if_index);
/*
* Enable forwarding, flooding, learning and ARP termination by default
return MODE_ERROR_BVI_DEF; /* bd already has a bvi interface */
}
bd_config->bvi_sw_if_index = sw_if_index;
- config->bvi = 1;
+ config->flags |= L2_INPUT_FLAG_BVI;
/* create the l2fib entry for the bvi interface */
l2fib_add_entry (hi->hw_address, bd_index, sw_if_index,
}
else if (mode == MODE_L2_XC)
{
- config->xconnect = 1;
- config->bridge = 0;
+ config->flags = L2_INPUT_FLAG_XCONNECT;
config->output_sw_if_index = xc_sw_if_index;
/* Make sure last-chance drop is configured */
}
else if (mode == MODE_L2_CLASSIFY)
{
- config->xconnect = 1;
- config->bridge = 0;
+ config->flags = L2_INPUT_FLAG_XCONNECT;
config->output_sw_if_index = xc_sw_if_index;
/* Make sure last-chance drop is configured */
*/
l2_if_adjust++;
+
+ bd_input_walk (bd_index, l2input_recache, NULL);
}
/* Adjust count of L2 interfaces */
return 0;
}
-#endif /* CLIB_MARCH_VARIANT */
+
+static clib_error_t *
+l2_input_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add)
+{
+ if (!is_add)
+ {
+ vlib_main_t *vm = vlib_get_main ();
+ l2_input_config_t *config;
+
+ if (sw_if_index < vec_len (l2input_main.configs))
+ {
+ config = vec_elt_at_index (l2input_main.configs, sw_if_index);
+ if (l2_input_is_xconnect (config))
+ set_int_l2_mode (vm, vnm, MODE_L3, config->output_sw_if_index, 0,
+ L2_BD_PORT_TYPE_NORMAL, 0, 0);
+ if (l2_input_is_xconnect (config) || l2_input_is_bridge (config))
+ set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0,
+ L2_BD_PORT_TYPE_NORMAL, 0, 0);
+ }
+ }
+
+ return (NULL);
+}
+
+VNET_SW_INTERFACE_ADD_DEL_FUNCTION (l2_input_interface_add_del);
/**
* Set subinterface in bridging mode with a bridge-domain ID.
vec_foreach (si, sis)
{
l2_input_config_t *config = l2input_intf_config (si->sw_if_index);
- if (config->bridge)
+ if (l2_input_is_bridge (config))
{
u32 bd_id;
mode = "l2 bridge";
bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
- args = format (0, "bd_id %d%s%d", bd_id,
- config->bvi ? " bvi shg " : " shg ", config->shg);
+ args = format (0, "bd_id %d%s shg %d", bd_id,
+ l2_input_is_bvi (config) ? " bvi" : "", config->shg);
}
- else if (config->xconnect)
+ else if (l2_input_is_xconnect (config))
{
mode = "l2 xconnect";
args = format (0, "%U",
_(l2_patch_init) \
_(l2_xcrw_init)
-#ifndef CLIB_MARCH_VARIANT
clib_error_t *
l2_init (vlib_main_t * vm)
{
}
VLIB_INIT_FUNCTION (l2_init);
-#endif /* CLIB_MARCH_VARIANT */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff