l2/l2_flood.c
l2/l2_fwd.c
l2/l2_input.c
+ l2/l2_input_node.c
l2/l2_input_vtr.c
l2/l2_learn.c
l2/l2_output.c
l2/l2_patch.c
l2/l2_in_out_feat_arc.c
l2/l2_input_classify.c
- l2/l2_input.c
+ l2/l2_input_node.c
l2/l2_output_classify.c
l2/l2_flood.c
l2/l2_uu_fwd.c
config = l2input_intf_config (sw_if_index);
- if (config->bridge || config->xconnect)
+ if (l2_input_is_bridge(config) ||
+ l2_input_is_xconnect(config))
{
dd->dd_reinject = DVR_REINJECT_L2;
}
/* Ordinarily, this is the only config lookup. */
config = l2input_intf_config (vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
- next_index =
- config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
- VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
- new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
+ next_index = (l2_input_is_bridge (config) ?
+ VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
+ VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
+ new_tx_sw_if_index = l2_input_is_bvi (config) ? L2INPUT_BVI : ~0;
new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
while (n_left_from >= 4)
{
config = l2input_intf_config
(vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
- next_index =
- config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
- VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
- new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
+ next_index = (l2_input_is_bridge (config) ?
+ VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
+ VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
+ new_tx_sw_if_index = l2_input_is_bvi (config) ? L2INPUT_BVI : ~0;
new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
}
next[0] = next_index;
{
config = l2input_intf_config
(vnet_buffer (b[1])->sw_if_index[VLIB_TX]);
- next_index =
- config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
- VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
+ next_index = (l2_input_is_bridge (config) ?
+ VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
+ VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
new_rx_sw_if_index = vnet_buffer (b[1])->sw_if_index[VLIB_TX];
- new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
+ new_tx_sw_if_index = l2_input_is_bvi (config) ? L2INPUT_BVI : ~0;
}
next[1] = next_index;
vnet_buffer (b[1])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
{
config = l2input_intf_config
(vnet_buffer (b[2])->sw_if_index[VLIB_TX]);
- next_index =
- config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
- VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
+ next_index = (l2_input_is_bridge (config) ?
+ VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
+ VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
new_rx_sw_if_index = vnet_buffer (b[2])->sw_if_index[VLIB_TX];
- new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
+ new_tx_sw_if_index = l2_input_is_bvi (config) ? L2INPUT_BVI : ~0;
}
next[2] = next_index;
vnet_buffer (b[2])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
{
config = l2input_intf_config
(vnet_buffer (b[3])->sw_if_index[VLIB_TX]);
- next_index =
- config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
- VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
+ next_index = (l2_input_is_bridge (config) ?
+ VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
+ VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
new_rx_sw_if_index = vnet_buffer (b[3])->sw_if_index[VLIB_TX];
- new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
+ new_tx_sw_if_index = l2_input_is_bvi (config) ? L2INPUT_BVI : ~0;
}
next[3] = next_index;
vnet_buffer (b[3])->sw_if_index[VLIB_RX] = new_rx_sw_if_index;
{
config = l2input_intf_config
(vnet_buffer (b[0])->sw_if_index[VLIB_TX]);
- next_index =
- config->bridge ? VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
- VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT;
- new_tx_sw_if_index = config->bvi ? L2INPUT_BVI : ~0;
+ next_index = (l2_input_is_bridge (config) ?
+ VNET_SIMULATED_ETHERNET_TX_NEXT_L2_INPUT :
+ VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
+ new_tx_sw_if_index = l2_input_is_bvi (config) ? L2INPUT_BVI : ~0;
new_rx_sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
}
next[0] = next_index;
#include <vnet/fib/ip6_fib.h>
#include <vnet/adj/adj.h>
#include <vnet/adj/adj_mcast.h>
-#include <vnet/l2/l2_input.h>
typedef enum vnet_interface_helper_flags_t_
{
pool_elt_at_index (im->sw_interfaces, sw_if_index);
/* Check if the interface has config and is removed from L2 BD or XConnect */
- 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 (config->xconnect)
- set_int_l2_mode (vm, vnm, MODE_L3, config->output_sw_if_index, 0,
- L2_BD_PORT_TYPE_NORMAL, 0, 0);
- if (config->xconnect || config->bridge)
- set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0,
- L2_BD_PORT_TYPE_NORMAL, 0, 0);
- }
vnet_clear_sw_interface_tag (vnm, sw_if_index);
/* Bring down interface in case it is up. */
if (show_features)
{
vnet_interface_features_show (vm, sw_if_index, verbose);
-
- l2_input_config_t *l2_input = l2input_intf_config (sw_if_index);
- u32 fb = l2_input->feature_bitmap;
- /* intf input features are masked by bridge domain */
- if (l2_input->bridge)
- fb &= l2input_bd_config (l2_input->bd_index)->feature_bitmap;
- vlib_cli_output (vm, "\nl2-input:\n%U", format_l2_input_features, fb,
- 1);
+ vlib_cli_output (vm, "%U", format_l2_input_features, sw_if_index, 1);
l2_output_config_t *l2_output = l2output_intf_config (sw_if_index);
vlib_cli_output (vm, "\nl2-output:");
(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ? "up" : "dn");
/* Display any L2 info */
- l2_input_config_t *l2_input = l2input_intf_config (si->sw_if_index);
- if (l2_input->bridge)
- {
- bd_main_t *bdm = &bd_main;
- u32 bd_id = l2input_main.bd_configs[l2_input->bd_index].bd_id;
- vlib_cli_output (vm, " L2 bridge bd-id %d idx %d shg %d %s",
- bd_id, bd_find_index (bdm, bd_id), l2_input->shg,
- l2_input->bvi ? "bvi" : " ");
- }
- else if (l2_input->xconnect)
- vlib_cli_output (vm, " L2 xconnect %U",
- format_vnet_sw_if_index_name, vnm,
- l2_input->output_sw_if_index);
+ vlib_cli_output (vm, "%U", format_l2_input, si->sw_if_index);
/* *INDENT-OFF* */
/* Display any IP4 addressing info */
s = format (s,
"l2.feature_bitmap_input: %U, L2.feature_bitmap_output: %U",
- format_l2_input_features, o->l2.feature_bitmap, 0,
+ format_l2_input_feature_bitmap, o->l2.feature_bitmap, 0,
format_l2_output_features, o->l2.feature_bitmap, 0);
vec_add1 (s, '\n');
pool_foreach (swif, im->sw_interfaces,
({
config = vec_elt_at_index (l2im->configs, swif->sw_if_index);
- if (config->xconnect)
+ if (l2_input_is_xconnect(config))
send_l2_xconnect_details (reg, mp->context, swif->sw_if_index,
config->output_sw_if_index);
}));
{
l2_input_config_t *config;
config = vec_elt_at_index (l2im->configs, sw_if_index);
- if (config->bridge == 0)
+ if (!l2_input_is_bridge (config))
{
rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
goto bad_sw_if_index;
/* For BVI, need to use l2-fwd node to send ARP reply as
l2-output node cannot output packet to BVI properly */
cfg0 = vec_elt_at_index (l2im->configs, sw_if_index0);
- if (PREDICT_FALSE (cfg0->bvi))
+ if (PREDICT_FALSE (l2_input_is_bvi (cfg0)))
{
vnet_buffer (p0)->l2.feature_bitmap |= L2INPUT_FEAT_FWD;
vnet_buffer (p0)->sw_if_index[VLIB_RX] = 0;
VLIB_INIT_FUNCTION (l2bd_init);
+l2_bridge_domain_t *
+bd_get (u32 bd_index)
+{
+ if (bd_index < vec_len (l2input_main.bd_configs))
+ return (vec_elt_at_index (l2input_main.bd_configs, bd_index));
+ return (NULL);
+}
+
+u32
+bd_input_walk (u32 bd_index, bd_input_walk_fn_t fn, void *data)
+{
+ l2_flood_member_t *member;
+ l2_bridge_domain_t *bd;
+ u32 sw_if_index;
+
+ sw_if_index = ~0;
+ bd = bd_get (bd_index);
+
+ ASSERT (bd);
+
+ vec_foreach (member, bd->members)
+ {
+ if (WALK_STOP == fn (bd_index, member->sw_if_index))
+ {
+ sw_if_index = member->sw_if_index;
+ break;
+ }
+ }
+
+ return (sw_if_index);
+}
+
+static void
+b2_input_recache (u32 bd_index)
+{
+ bd_input_walk (bd_index, l2input_recache, NULL);
+}
/**
Set the learn/forward/flood flags for the bridge domain.
bd_config->feature_bitmap &= ~feature_bitmap;
}
+ b2_input_recache (bd_index);
+
return bd_config->feature_bitmap;
}
vec_validate (l2input_main.bd_configs, bd_index);
bd_config = vec_elt_at_index (l2input_main.bd_configs, bd_index);
bd_config->mac_age = age;
+ b2_input_recache (bd_index);
/* check if there is at least one bd with mac aging enabled */
vec_foreach (bd_config, l2input_main.bd_configs)
else
as = format (as, "off");
vlib_cli_output (vm,
- "%=8d %=7d %=4d %=9v %=9s %=9s %=11U %=9s %=9s %=9s %=11U",
- bd_config->bd_id, bd_index, bd_config->seq_num, as,
+ "%=8d %=7d %=9v %=9s %=9s %=11U %=9s %=9s %=9s %=11U",
+ bd_config->bd_id, bd_index, as,
bd_config->feature_bitmap & L2INPUT_FEAT_LEARN ?
"on" : "off",
bd_config->feature_bitmap & L2INPUT_FEAT_FWD ?
"on" : "off",
format_vnet_sw_if_index_name_with_NA,
vnm, bd_config->bvi_sw_if_index);
+ vlib_cli_output (vm, "%U", format_l2_input_feature_bitmap,
+ bd_config->feature_bitmap);
vec_reset_length (as);
if (detail || intf)
{
l2_flood_member_t *member =
vec_elt_at_index (bd_config->members, i);
- u8 swif_seq_num = *l2fib_swif_seq_num (member->sw_if_index);
+ u8 swif_seq_num = l2_input_seq_num (member->sw_if_index);
u32 vtr_opr, dot1q, tag1, tag2;
if (i == 0)
{
/* Init bridge domain if not done already */
void bd_validate (l2_bridge_domain_t * bd_config);
-
void
bd_add_member (l2_bridge_domain_t * bd_config, l2_flood_member_t * member);
return bd_index;
}
+/**
+ * \brief Walk all the input interfaces in the BD
+ */
+typedef walk_rc_t (*bd_input_walk_fn_t) (u32 bd_index, u32 sw_if_index);
+
+u32 bd_input_walk (u32 bd_index, bd_input_walk_fn_t fn, void *data);
+
+l2_bridge_domain_t *bd_get (u32 bd_index);
+l2_bridge_domain_t *bd_get_by_table_id (u32 table_id);
+
u32 bd_add_del_ip_mac (u32 bd_index,
ip46_type_t type,
const ip46_address_t * ip_addr,
*l2fe_res = ctx.l2fe_res;
}
+void
+l2_fib_extract_seq_num (l2fib_seq_num_t sn, u8 * bd_sn, u8 * if_sn)
+{
+ *bd_sn = sn >> 8;
+ *if_sn = sn & 0xff;
+}
+
+u8 *
+format_l2_fib_seq_num (u8 * s, va_list * a)
+{
+ l2fib_seq_num_t sn = va_arg (*a, int);
+ u8 bd_sn, if_sn;
+
+ l2_fib_extract_seq_num (sn, &bd_sn, &if_sn);
+
+ s = format (s, "%3d/%-3d", bd_sn, if_sn);
+
+ return (s);
+}
+
typedef struct l2fib_show_walk_ctx_t_
{
u8 first_entry;
}
vlib_cli_output (ctx->vm,
- "%=19U%=7d%=7d %3d/%-3d%=9v%=7s%=7s%=5s%=30U",
+ "%=19U%=7d%=7d %U%=9v%=7s%=7s%=5s%=30U",
format_ethernet_address, key.fields.mac,
key.fields.bd_index,
result.fields.sw_if_index == ~0
? -1 : result.fields.sw_if_index,
- result.fields.sn.bd, result.fields.sn.swif, s,
+ format_l2_fib_seq_num, result.fields.sn, s,
l2fib_entry_result_is_set_STATIC (&result) ? "*" : "-",
l2fib_entry_result_is_set_FILTER (&result) ? "*" : "-",
l2fib_entry_result_is_set_BVI (&result) ? "*" : "-",
};
/* *INDENT-ON* */
-static inline l2fib_seq_num_t
+static l2fib_seq_num_t
l2fib_cur_seq_num (u32 bd_index, u32 sw_if_index)
{
l2_bridge_domain_t *bd_config = l2input_bd_config (bd_index);
- /* *INDENT-OFF* */
- return (l2fib_seq_num_t) {
- .swif = *l2fib_swif_seq_num (sw_if_index),
- .bd = bd_config->seq_num,
- };
- /* *INDENT-ON* */
+
+ return l2_fib_mk_seq_num (bd_config->seq_num,
+ l2_input_seq_num (sw_if_index));
}
/**
void
l2fib_flush_int_mac (vlib_main_t * vm, u32 sw_if_index)
{
- *l2fib_swif_seq_num (sw_if_index) += 1;
+ l2_input_seq_num_inc (sw_if_index);
l2fib_start_ager_scan (vm);
}
l2fib_sw_interface_up_down (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
{
l2_input_config_t *config = l2input_intf_config (sw_if_index);
- if ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) == 0 && config->bridge)
+ if ((flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) == 0 &&
+ l2_input_is_bridge (config))
l2fib_flush_int_mac (vnm->vlib_main, sw_if_index);
return 0;
}
/* start aging processing */
u32 bd_index = key.fields.bd_index;
u32 sw_if_index = result.fields.sw_if_index;
- u16 sn = l2fib_cur_seq_num (bd_index, sw_if_index).as_u16;
- if (result.fields.sn.as_u16 != sn)
+ u16 sn = l2fib_cur_seq_num (bd_index, sw_if_index);
+ if (result.fields.sn != sn)
goto age_out; /* stale mac */
l2_bridge_domain_t *bd_config =
/* hash table initialized */
u8 mac_table_initialized;
- /* per swif vector of sequence number for interface based flush of MACs */
- u8 *swif_seq_num;
-
/* last event or ager scan duration */
f64 evt_scan_duration;
f64 age_scan_duration;
STATIC_ASSERT_SIZEOF (l2fib_entry_key_t, 8);
+/**
+ * A combined representation of the sequence number associated
+ * with the interface and the BD.
+ * The BD is in higher bits, the interface in the lower bits, but
+ * the order is not important.
+ *
+ * It's convenient to represent this as an union of two u8s,
+ * but then in the DP one is forced to do short writes, followed
+ * by long reads, which is a sure thing for a stall
+ */
+typedef u16 l2fib_seq_num_t;
-typedef struct
+static_always_inline l2fib_seq_num_t
+l2_fib_mk_seq_num (u8 bd_sn, u8 if_sn)
{
- union
- {
- struct
- {
- u8 swif;
- u8 bd;
- };
- u16 as_u16;
- };
-} l2fib_seq_num_t;
+ return (((u16) bd_sn) << 8) | if_sn;
+}
+
+static_always_inline l2fib_seq_num_t
+l2_fib_update_seq_num (l2fib_seq_num_t sn, u8 if_sn)
+{
+ sn &= 0xff00;
+ sn |= if_sn;
+
+ return (sn);
+}
+
+extern void l2_fib_extract_seq_num (l2fib_seq_num_t sn, u8 * bd_sn,
+ u8 * if_sn);
+extern u8 *format_l2_fib_seq_num (u8 * s, va_list * a);
/**
* Flags associated with an L2 Fib Entry
u8 *format_vnet_sw_if_index_name_with_NA (u8 * s, va_list * args);
-static_always_inline u8 *
-l2fib_swif_seq_num (u32 sw_if_index)
-{
- l2fib_main_t *mp = &l2fib_main;
- return vec_elt_at_index (mp->swif_seq_num, sw_if_index);
-}
-
-static_always_inline u8 *
-l2fib_valid_swif_seq_num (u32 sw_if_index)
-{
- l2fib_main_t *mp = &l2fib_main;
- vec_validate (mp->swif_seq_num, sw_if_index);
- return l2fib_swif_seq_num (sw_if_index);
-}
-
BVT (clib_bihash) * get_mac_table (void);
#endif
/* check l2fib seq num for stale entries */
if (!l2fib_entry_result_is_set_AGE_NOT (result0))
{
- l2fib_seq_num_t in_sn = {.as_u16 = vnet_buffer (b0)->l2.l2fib_sn };
- l2fib_seq_num_t expected_sn = {
- .bd = in_sn.bd,
- .swif = *l2fib_swif_seq_num (result0->fields.sw_if_index),
- };
- l2fib_seq_num_valid =
- expected_sn.as_u16 == result0->fields.sn.as_u16;
+ l2fib_seq_num_t in_sn = vnet_buffer (b0)->l2.l2fib_sn;
+ l2fib_seq_num_t expected_sn = l2_fib_update_seq_num (in_sn,
+ l2_input_seq_num
+ (result0->fields.sw_if_index));
+
+ l2fib_seq_num_valid = expected_sn == result0->fields.sn;
}
if (PREDICT_FALSE (!l2fib_seq_num_valid))
}
/* set the interface flag */
- if (l2input_intf_config (sw_if_index)->xconnect)
+ if (l2input_intf_config (sw_if_index))
{
l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_XCONNECT, enable);
}
* 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
#include <vnet/ethernet/packet.h>
#include <vnet/ip/ip.h>
-/* Per-subinterface L2 feature configuration */
+/* l2 connection type */
+typedef enum l2_input_flags_t_
+{
+ /* NONE imples L3 mode. */
+ L2_INPUT_FLAG_NONE = 0,
+ L2_INPUT_FLAG_XCONNECT = (1 << 0),
+ L2_INPUT_FLAG_BRIDGE = (1 << 1),
+ L2_INPUT_FLAG_BVI = (1 << 2),
+} __clib_packed l2_input_flags_t;
+/* Per-subinterface L2 feature configuration */
typedef struct
{
+ u8 __force_u64_alignement[0] __attribute__ ((aligned (8)));
union
{
- u16 bd_index; /* bridge domain id */
- u32 output_sw_if_index; /* for xconnect */
+ /* bridge domain id and values cached from the BD */
+ struct
+ {
+ u16 bd_index;
+ u8 bd_seq_num;
+ u8 bd_mac_age;
+ };
+ /* for xconnect */
+ u32 output_sw_if_index;
};
/* config for which input features are configured on this interface */
u32 feature_bitmap;
+ /* config for which input features are configured on this interface's
+ * BD - this is cahced from the BD struct*/
+ u32 bd_feature_bitmap;
+
/* split horizon group */
u8 shg;
- /* Interface mode. If both are 0, this interface is in L3 mode */
- u8 xconnect;
- u8 bridge;
+ /* Interface sequence number */
+ u8 seq_num;
- /* this is the bvi interface for the bridge-domain */
- u8 bvi;
+ /* Flags describing this interface */
+ l2_input_flags_t flags;
+ /* A wee bit of spare space */
+ u8 __pad;
} l2_input_config_t;
+/* Ensure a struct is an even multiple of 8 bytes,
+ * so they do not stradle cache lines */
+STATIC_ASSERT_SIZEOF (l2_input_config_t, 2 * sizeof (u64));
typedef struct
{
char **l2input_get_feat_names (void);
/* arg0 - u32 feature_bitmap, arg1 - u32 verbose */
+u8 *format_l2_input_feature_bitmap (u8 * s, va_list * args);
u8 *format_l2_input_features (u8 * s, va_list * args);
+u8 *format_l2_input (u8 * s, va_list * args);
static_always_inline u8
bd_feature_flood (l2_bridge_domain_t * bd_config)
L2INPUT_FEAT_ARP_UFWD);
}
+static inline bool
+l2_input_is_bridge (const l2_input_config_t * input)
+{
+ return (input->flags & L2_INPUT_FLAG_BRIDGE);
+}
+
+static inline bool
+l2_input_is_xconnect (const l2_input_config_t * input)
+{
+ return (input->flags & L2_INPUT_FLAG_XCONNECT);
+}
+
+static inline bool
+l2_input_is_bvi (const l2_input_config_t * input)
+{
+ return (input->flags & L2_INPUT_FLAG_BVI);
+}
+
+static_always_inline u8
+l2_input_seq_num (u32 sw_if_index)
+{
+ l2_input_config_t *input;
+
+ input = vec_elt_at_index (l2input_main.configs, sw_if_index);
+
+ return input->seq_num;
+}
+
+
/** Masks for eliminating features that do not apply to a packet */
/** Get a pointer to the config for the given interface */
const u8 * old_address,
const u8 * new_address);
+void l2_input_seq_num_inc (u32 sw_if_index);
+walk_rc_t l2input_recache (u32 bd_index, u32 sw_if_index);
+
#define MODE_L3 0
#define MODE_L2_BRIDGE 1
#define MODE_L2_XC 2
--- /dev/null
+/*
+ * l2_input.c : layer 2 input packet processing
+ *
+ * Copyright (c) 2013 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 <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ethernet/packet.h>
+#include <vnet/ip/ip_packet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/fib/fib_node.h>
+#include <vnet/ethernet/arp_packet.h>
+#include <vlib/cli.h>
+#include <vnet/l2/l2_input.h>
+#include <vnet/l2/l2_output.h>
+#include <vnet/l2/feat_bitmap.h>
+#include <vnet/l2/l2_bvi.h>
+#include <vnet/l2/l2_fib.h>
+#include <vnet/l2/l2_bd.h>
+
+#include <vppinfra/error.h>
+#include <vppinfra/hash.h>
+#include <vppinfra/cache.h>
+
+/**
+ * @file
+ * @brief Interface Input Mode (Layer 2 Cross-Connect or Bridge / Layer 3).
+ *
+ * This file contains the CLI Commands that modify the input mode of an
+ * interface. For interfaces in a Layer 2 cross-connect, all packets
+ * received on one interface will be transmitted to the other. For
+ * interfaces in a bridge-domain, packets will be forwarded to other
+ * interfaces in the same bridge-domain based on destination mac address.
+ * For interfaces in Layer 3 mode, the packets will be routed.
+ */
+
+typedef struct
+{
+ /* per-pkt trace data */
+ u8 dst_and_src[12];
+ u32 next_index;
+ u32 sw_if_index;
+ u32 feat_mask;
+} 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 [%U]",
+ t->sw_if_index,
+ format_ethernet_address, t->dst_and_src,
+ format_ethernet_address, t->dst_and_src + 6,
+ format_l2_input_feature_bitmap, t->feat_mask, 0);
+ 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, u16 * next0)
+{
+ /*
+ * 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 (l2_input_is_bridge (config))
+ {
+ /* Do bridge-domain processing */
+ /* save BD ID for next feature graph nodes */
+ vnet_buffer (b0)->l2.bd_index = config->bd_index;
+
+ /* Save bridge domain and interface seq_num */
+ vnet_buffer (b0)->l2.l2fib_sn = l2_fib_mk_seq_num
+ (config->bd_seq_num, config->seq_num);
+ vnet_buffer (b0)->l2.bd_age = config->bd_mac_age;
+
+ /*
+ * 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 & config->bd_feature_bitmap;
+ }
+ else if (l2_input_is_xconnect (config))
+ {
+ /* Set the output interface */
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
+ }
+ else
+ feat_mask = L2INPUT_FEAT_DROP;
+
+ /* mask out features from bitmap using packet type and bd config */
+ u32 feature_bitmap = config->feature_bitmap & feat_mask;
+
+ /* save for next feature graph nodes */
+ vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
+
+ /* Determine the next node */
+ *next0 = feat_bitmap_get_next_node_index (msm->feat_next_node_index,
+ feature_bitmap);
+}
+
+static_always_inline uword
+l2input_node_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame,
+ int do_trace)
+{
+ u32 n_left, *from;
+ l2input_next_t next_index;
+ l2input_main_t *msm = &l2input_main;
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
+ u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
+
+ from = vlib_frame_vector_args (frame);
+ n_left = frame->n_vectors; /* number of packets to process */
+ next_index = node->cached_next_index;
+
+ vlib_get_buffers (vm, from, bufs, n_left);
+
+ while (n_left > 0)
+ {
+ while (n_left >= 8)
+ {
+ 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);
+ }
+
+ classify_and_dispatch (msm, b[0], &next[0]);
+ classify_and_dispatch (msm, b[1], &next[1]);
+ classify_and_dispatch (msm, b[2], &next[2]);
+ classify_and_dispatch (msm, b[3], &next[3]);
+
+ 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;
+ t->feat_mask = vnet_buffer (b[0])->l2.feature_bitmap;
+ 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;
+ t->feat_mask = vnet_buffer (b[1])->l2.feature_bitmap;
+ 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;
+ t->feat_mask = vnet_buffer (b[2])->l2.feature_bitmap;
+ 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;
+ t->feat_mask = vnet_buffer (b[3])->l2.feature_bitmap;
+ clib_memcpy_fast (t->dst_and_src, h3->dst_address,
+ sizeof (h3->dst_address) +
+ sizeof (h3->src_address));
+ }
+ }
+
+ b += 4;
+ n_left -= 4;
+ next += 4;
+ }
+
+ while (n_left > 0)
+ {
+ classify_and_dispatch (msm, b[0], &next[0]);
+
+ 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));
+ t->sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
+ t->feat_mask = vnet_buffer (b[0])->l2.feature_bitmap;
+ clib_memcpy_fast (t->dst_and_src, h0->dst_address,
+ sizeof (h0->dst_address) +
+ sizeof (h0->src_address));
+ }
+
+ b += 1;
+ next += 1;
+ n_left -= 1;
+ }
+ }
+
+ vlib_node_increment_counter (vm, l2input_node.index,
+ L2INPUT_ERROR_L2INPUT, frame->n_vectors);
+
+ vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
+
+ return frame->n_vectors;
+}
+
+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* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
{
/* Entry in L2FIB with matching sw_if_index matched - normal fast path */
u32 dtime = timestamp - result0->fields.timestamp;
- u32 dsn = result0->fields.sn.as_u16 - vnet_buffer (b0)->l2.l2fib_sn;
+ u32 dsn = (result0->fields.sn - vnet_buffer (b0)->l2.l2fib_sn);
u32 check = (dtime && vnet_buffer (b0)->l2.bd_age) || dsn;
if (PREDICT_TRUE (check == 0))
/* Update the entry */
result0->fields.timestamp = timestamp;
- result0->fields.sn.as_u16 = vnet_buffer (b0)->l2.l2fib_sn;
+ result0->fields.sn = vnet_buffer (b0)->l2.l2fib_sn;
BVT (clib_bihash_kv) kv;
kv.key = key0->raw;
Code Review / vpp.git / commitdiff