/*
* The 'DB' of all glean adjs.
- * There is only one glean per-interface per-protocol, so this is a per-interface
- * vector
+ * There is one glean per-{interface, protocol, connected prefix}
*/
-static adj_index_t *adj_gleans[FIB_PROTOCOL_MAX];
+static uword **adj_gleans[FIB_PROTOCOL_IP_MAX];
-static inline vlib_node_registration_t*
+static inline u32
adj_get_glean_node (fib_protocol_t proto)
{
switch (proto) {
case FIB_PROTOCOL_IP4:
- return (&ip4_glean_node);
+ return (ip4_glean_node.index);
case FIB_PROTOCOL_IP6:
- return (&ip6_glean_node);
+ return (ip6_glean_node.index);
case FIB_PROTOCOL_MPLS:
break;
}
ASSERT(0);
- return (NULL);
+ return (~0);
+}
+
+static adj_index_t
+adj_glean_db_lookup (fib_protocol_t proto,
+ u32 sw_if_index,
+ const ip46_address_t *nh_addr)
+{
+ uword *p;
+
+ if (vec_len(adj_gleans[proto]) <= sw_if_index)
+ return (ADJ_INDEX_INVALID);
+
+ p = hash_get_mem (adj_gleans[proto][sw_if_index], nh_addr);
+
+ if (p)
+ return (p[0]);
+
+ return (ADJ_INDEX_INVALID);
+}
+
+static void
+adj_glean_db_insert (fib_protocol_t proto,
+ u32 sw_if_index,
+ const ip46_address_t *nh_addr,
+ adj_index_t ai)
+{
+ vlib_main_t *vm = vlib_get_main();
+
+ vlib_worker_thread_barrier_sync(vm);
+
+ vec_validate(adj_gleans[proto], sw_if_index);
+
+ if (NULL == adj_gleans[proto][sw_if_index])
+ {
+ adj_gleans[proto][sw_if_index] =
+ hash_create_mem (0, sizeof(ip46_address_t), sizeof(adj_index_t));
+ }
+
+ hash_set_mem_alloc (&adj_gleans[proto][sw_if_index],
+ nh_addr, ai);
+
+ vlib_worker_thread_barrier_release(vm);
+}
+
+static void
+adj_glean_db_remove (fib_protocol_t proto,
+ u32 sw_if_index,
+ const ip46_address_t *nh_addr)
+{
+ vlib_main_t *vm = vlib_get_main();
+
+ vlib_worker_thread_barrier_sync(vm);
+
+ ASSERT(ADJ_INDEX_INVALID != adj_glean_db_lookup(proto, sw_if_index, nh_addr));
+ hash_unset_mem_free (&adj_gleans[proto][sw_if_index],
+ nh_addr);
+
+ if (0 == hash_elts(adj_gleans[proto][sw_if_index]))
+ {
+ hash_free(adj_gleans[proto][sw_if_index]);
+ adj_gleans[proto][sw_if_index] = NULL;
+ }
+ vlib_worker_thread_barrier_release(vm);
}
/*
*/
adj_index_t
adj_glean_add_or_lock (fib_protocol_t proto,
+ vnet_link_t linkt,
u32 sw_if_index,
- const ip46_address_t *nh_addr)
+ const fib_prefix_t *conn)
{
ip_adjacency_t * adj;
+ adj_index_t ai;
- vec_validate_init_empty(adj_gleans[proto], sw_if_index, ADJ_INDEX_INVALID);
+ ai = adj_glean_db_lookup(proto, sw_if_index, &conn->fp_addr);
- if (ADJ_INDEX_INVALID == adj_gleans[proto][sw_if_index])
+ if (ADJ_INDEX_INVALID == ai)
{
adj = adj_alloc(proto);
adj->lookup_next_index = IP_LOOKUP_NEXT_GLEAN;
adj->ia_nh_proto = proto;
- adj_gleans[proto][sw_if_index] = adj_get_index(adj);
+ adj->ia_link = linkt;
+ adj->ia_node_index = adj_get_glean_node(proto);
+ ai = adj_get_index(adj);
+ adj_lock(ai);
+
+ ASSERT(conn);
+ fib_prefix_normalize(conn, &adj->sub_type.glean.rx_pfx);
+ adj->rewrite_header.sw_if_index = sw_if_index;
+ adj->rewrite_header.data_bytes = 0;
+ adj->rewrite_header.max_l3_packet_bytes =
+ vnet_sw_interface_get_mtu(vnet_get_main(), sw_if_index,
+ vnet_link_to_mtu(linkt));
- if (NULL != nh_addr)
- {
- adj->sub_type.glean.receive_addr = *nh_addr;
- }
+ vnet_update_adjacency_for_sw_interface(vnet_get_main(),
+ sw_if_index,
+ ai);
- adj->rewrite_header.data_bytes = 0;
+ adj_glean_db_insert(proto, sw_if_index,
+ &adj->sub_type.glean.rx_pfx.fp_addr, ai);
+ }
+ else
+ {
+ adj = adj_get(ai);
+ adj_lock(ai);
+ }
+
+ adj_delegate_adj_created(adj);
+
+ return (ai);
+}
+
+/**
+ * adj_glean_update_rewrite
+ */
+void
+adj_glean_update_rewrite (adj_index_t adj_index)
+{
+ ip_adjacency_t *adj;
+
+ ASSERT(ADJ_INDEX_INVALID != adj_index);
+
+ adj = adj_get(adj_index);
+
+ vnet_rewrite_for_sw_interface(vnet_get_main(),
+ adj_fib_proto_2_nd(adj->ia_nh_proto),
+ adj->rewrite_header.sw_if_index,
+ adj->ia_node_index,
+ VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST,
+ &adj->rewrite_header,
+ sizeof (adj->rewrite_data));
+}
+
+static adj_walk_rc_t
+adj_glean_update_rewrite_walk (adj_index_t ai,
+ void *data)
+{
+ adj_glean_update_rewrite(ai);
+
+ return (ADJ_WALK_RC_CONTINUE);
+}
+
+void
+adj_glean_update_rewrite_itf (u32 sw_if_index)
+{
+ adj_glean_walk (sw_if_index, adj_glean_update_rewrite_walk, NULL);
+}
+
+void
+adj_glean_walk (u32 sw_if_index,
+ adj_walk_cb_t cb,
+ void *data)
+{
+ fib_protocol_t proto;
+
+ FOR_EACH_FIB_IP_PROTOCOL(proto)
+ {
+ adj_index_t ai, *aip, *ais = NULL;
+ ip46_address_t *conn;
+
+ if (vec_len(adj_gleans[proto]) <= sw_if_index ||
+ NULL == adj_gleans[proto][sw_if_index])
+ continue;
+
+ /*
+ * Walk first to collect the indices
+ * then walk the collection. This is safe
+ * to modifications of the hash table
+ */
+ hash_foreach_mem(conn, ai, adj_gleans[proto][sw_if_index],
+ ({
+ vec_add1(ais, ai);
+ }));
+
+ vec_foreach(aip, ais)
+ {
+ if (ADJ_WALK_RC_STOP == cb(*aip, data))
+ break;
+ }
+ vec_free(ais);
+ }
+}
- vnet_rewrite_for_sw_interface(vnet_get_main(),
- adj_fib_proto_2_nd(proto),
- sw_if_index,
- adj_get_glean_node(proto)->index,
- VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST,
- &adj->rewrite_header,
- sizeof (adj->rewrite_data));
+adj_index_t
+adj_glean_get (fib_protocol_t proto,
+ u32 sw_if_index,
+ const ip46_address_t *nh)
+{
+ if (NULL != nh)
+ {
+ return adj_glean_db_lookup(proto, sw_if_index, nh);
}
else
{
- adj = adj_get(adj_gleans[proto][sw_if_index]);
+ ip46_address_t *conn;
+ adj_index_t ai;
+
+ if (vec_len(adj_gleans[proto]) <= sw_if_index ||
+ NULL == adj_gleans[proto][sw_if_index])
+ return (ADJ_INDEX_INVALID);
+
+ hash_foreach_mem(conn, ai, adj_gleans[proto][sw_if_index],
+ ({
+ return (ai);
+ }));
}
+ return (ADJ_INDEX_INVALID);
+}
- adj_lock(adj_get_index(adj));
+const ip46_address_t *
+adj_glean_get_src (fib_protocol_t proto,
+ u32 sw_if_index,
+ const ip46_address_t *nh)
+{
+ const ip_adjacency_t *adj;
+ ip46_address_t *conn;
+ adj_index_t ai;
+
+ if (vec_len(adj_gleans[proto]) <= sw_if_index ||
+ NULL == adj_gleans[proto][sw_if_index])
+ return (NULL);
+
+ fib_prefix_t pfx = {
+ .fp_len = fib_prefix_get_host_length(proto),
+ .fp_proto = proto,
+ };
+
+ if (nh)
+ pfx.fp_addr = *nh;
+
+ hash_foreach_mem(conn, ai, adj_gleans[proto][sw_if_index],
+ ({
+ adj = adj_get(ai);
+
+ if (adj->sub_type.glean.rx_pfx.fp_len > 0)
+ {
+ /* if no destination is specified use the just glean */
+ if (NULL == nh)
+ return (&adj->sub_type.glean.rx_pfx.fp_addr);
+
+ /* check the clean covers the desintation */
+ if (fib_prefix_is_cover(&adj->sub_type.glean.rx_pfx, &pfx))
+ return (&adj->sub_type.glean.rx_pfx.fp_addr);
+ }
+ }));
- return (adj_get_index(adj));
+ return (NULL);
}
void
-adj_glean_remove (fib_protocol_t proto,
- u32 sw_if_index)
+adj_glean_remove (ip_adjacency_t *adj)
+{
+ fib_prefix_t norm;
+
+ fib_prefix_normalize(&adj->sub_type.glean.rx_pfx,
+ &norm);
+ adj_glean_db_remove(adj->ia_nh_proto,
+ adj->rewrite_header.sw_if_index,
+ &norm.fp_addr);
+}
+
+static adj_walk_rc_t
+adj_glean_start_backwalk (adj_index_t ai,
+ void *data)
{
- ASSERT(sw_if_index < vec_len(adj_gleans[proto]));
+ fib_node_back_walk_ctx_t bw_ctx = *(fib_node_back_walk_ctx_t*) data;
+
+ fib_walk_sync(FIB_NODE_TYPE_ADJ, ai, &bw_ctx);
- adj_gleans[proto][sw_if_index] = ADJ_INDEX_INVALID;
+ return (ADJ_WALK_RC_CONTINUE);
}
static clib_error_t *
/*
* for each glean on the interface trigger a walk back to the children
*/
- fib_protocol_t proto;
- ip_adjacency_t *adj;
-
-
- for (proto = FIB_PROTOCOL_IP4; proto <= FIB_PROTOCOL_IP6; proto++)
- {
- if (sw_if_index >= vec_len(adj_gleans[proto]) ||
- ADJ_INDEX_INVALID == adj_gleans[proto][sw_if_index])
- continue;
+ fib_node_back_walk_ctx_t bw_ctx = {
+ .fnbw_reason = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP ?
+ FIB_NODE_BW_REASON_FLAG_INTERFACE_UP :
+ FIB_NODE_BW_REASON_FLAG_INTERFACE_DOWN),
+ };
- adj = adj_get(adj_gleans[proto][sw_if_index]);
-
- fib_node_back_walk_ctx_t bw_ctx = {
- .fnbw_reason = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP ?
- FIB_NODE_BW_REASON_FLAG_INTERFACE_UP :
- FIB_NODE_BW_REASON_FLAG_INTERFACE_DOWN),
- };
-
- fib_walk_sync(FIB_NODE_TYPE_ADJ, adj_get_index(adj), &bw_ctx);
- }
+ adj_glean_walk (sw_if_index, adj_glean_start_backwalk, &bw_ctx);
return (NULL);
}
* @brief Invoked on each SW interface of a HW interface when the
* HW interface state changes
*/
-static void
+static walk_rc_t
adj_nbr_hw_sw_interface_state_change (vnet_main_t * vnm,
u32 sw_if_index,
void *arg)
{
adj_glean_interface_state_change(vnm, sw_if_index, (uword) arg);
+
+ return (WALK_CONTINUE);
}
/**
u32 sw_if_index,
u32 is_add)
{
- /*
- * for each glean on the interface trigger a walk back to the children
- */
- fib_protocol_t proto;
- ip_adjacency_t *adj;
-
if (is_add)
{
/*
return (NULL);
}
- for (proto = FIB_PROTOCOL_IP4; proto <= FIB_PROTOCOL_IP6; proto++)
- {
- if (sw_if_index >= vec_len(adj_gleans[proto]) ||
- ADJ_INDEX_INVALID == adj_gleans[proto][sw_if_index])
- continue;
-
- adj = adj_get(adj_gleans[proto][sw_if_index]);
-
- fib_node_back_walk_ctx_t bw_ctx = {
- .fnbw_reason = FIB_NODE_BW_REASON_FLAG_INTERFACE_DELETE,
- };
+ /*
+ * for each glean on the interface trigger a walk back to the children
+ */
+ fib_node_back_walk_ctx_t bw_ctx = {
+ .fnbw_reason = FIB_NODE_BW_REASON_FLAG_INTERFACE_DELETE,
+ };
- fib_walk_sync(FIB_NODE_TYPE_ADJ, adj_get_index(adj), &bw_ctx);
- }
+ adj_glean_walk (sw_if_index, adj_glean_start_backwalk, &bw_ctx);
return (NULL);
}
{
index_t index = va_arg(*ap, index_t);
CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
- vnet_main_t * vnm = vnet_get_main();
ip_adjacency_t * adj = adj_get(index);
- return (format(s, "%U-glean: %U",
- format_fib_protocol, adj->ia_nh_proto,
- format_vnet_sw_interface_name,
- vnm,
- vnet_get_sw_interface(vnm,
- adj->rewrite_header.sw_if_index)));
+ s = format(s, "%U-glean: [src:%U] %U",
+ format_fib_protocol, adj->ia_nh_proto,
+ format_fib_prefix, &adj->sub_type.glean.rx_pfx,
+ format_vnet_rewrite,
+ &adj->rewrite_header, sizeof (adj->rewrite_data), 0);
+
+ return (s);
}
+u32
+adj_glean_db_size (void)
+{
+ fib_protocol_t proto;
+ u32 sw_if_index = 0;
+ u64 count = 0;
+
+ FOR_EACH_FIB_IP_PROTOCOL(proto)
+ {
+ vec_foreach_index(sw_if_index, adj_gleans[proto])
+ {
+ if (NULL != adj_gleans[proto][sw_if_index])
+ {
+ count += hash_elts(adj_gleans[proto][sw_if_index]);
+ }
+ }
+ }
+ return (count);
+}
static void
adj_dpo_lock (dpo_id_t *dpo)
.dv_unlock = adj_dpo_unlock,
.dv_format = format_adj_glean,
.dv_get_urpf = adj_dpo_get_urpf,
+ .dv_get_mtu = adj_dpo_get_mtu,
};
/**
Code Review / vpp.git / blobdiff