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-rw-r--r--vnet/vnet/ip/ip4_forward.c94
-rw-r--r--vnet/vnet/ip/ip6_forward.c89
-rw-r--r--vnet/vnet/ip/lookup.c3
-rw-r--r--vnet/vnet/ip/lookup.h10
4 files changed, 156 insertions, 40 deletions
diff --git a/vnet/vnet/ip/ip4_forward.c b/vnet/vnet/ip/ip4_forward.c
index bf101bbadab..63bc0ed8fbf 100644
--- a/vnet/vnet/ip/ip4_forward.c
+++ b/vnet/vnet/ip/ip4_forward.c
@@ -332,10 +332,12 @@ ip4_add_del_route_next_hop (ip4_main_t * im,
}
else
{
- vnm->api_errno = VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB;
- error = clib_error_return (0, "next-hop %U/32 not in FIB",
- format_ip4_address, next_hop);
- goto done;
+ /* Next hop is not known, so create indirect adj */
+ ip_adjacency_t add_adj;
+ add_adj.lookup_next_index = IP_LOOKUP_NEXT_INDIRECT;
+ add_adj.indirect.next_hop.ip4.as_u32 = next_hop->as_u32;
+ add_adj.explicit_fib_index = explicit_fib_index;
+ ip_add_adjacency (lm, &add_adj, 1, &nh_adj_index);
}
}
else
@@ -624,7 +626,8 @@ always_inline uword
ip4_lookup_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame,
- int lookup_for_responses_to_locally_received_packets)
+ int lookup_for_responses_to_locally_received_packets,
+ int is_indirect)
{
ip4_main_t * im = &ip4_main;
ip_lookup_main_t * lm = &im->lookup_main;
@@ -651,6 +654,7 @@ ip4_lookup_inline (vlib_main_t * vm,
ip_adjacency_t * adj0, * adj1;
ip4_fib_mtrie_t * mtrie0, * mtrie1;
ip4_fib_mtrie_leaf_t leaf0, leaf1;
+ ip4_address_t * dst_addr0, *dst_addr1;
__attribute__((unused)) u32 pi0, fib_index0, adj_index0, is_tcp_udp0;
__attribute__((unused)) u32 pi1, fib_index1, adj_index1, is_tcp_udp1;
u32 flow_hash_config0, flow_hash_config1;
@@ -680,6 +684,20 @@ ip4_lookup_inline (vlib_main_t * vm,
ip0 = vlib_buffer_get_current (p0);
ip1 = vlib_buffer_get_current (p1);
+ if (is_indirect)
+ {
+ ip_adjacency_t * iadj0, * iadj1;
+ iadj0 = ip_get_adjacency (lm, vnet_buffer(p0)->ip.adj_index[VLIB_TX]);
+ iadj1 = ip_get_adjacency (lm, vnet_buffer(p1)->ip.adj_index[VLIB_TX]);
+ dst_addr0 = &iadj0->indirect.next_hop.ip4;
+ dst_addr1 = &iadj1->indirect.next_hop.ip4;
+ }
+ else
+ {
+ dst_addr0 = &ip0->dst_address;
+ dst_addr1 = &ip1->dst_address;
+ }
+
fib_index0 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p0)->sw_if_index[VLIB_RX]);
fib_index1 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p1)->sw_if_index[VLIB_RX]);
fib_index0 = (vnet_buffer(p0)->sw_if_index[VLIB_TX] == (u32)~0) ?
@@ -695,8 +713,8 @@ ip4_lookup_inline (vlib_main_t * vm,
leaf0 = leaf1 = IP4_FIB_MTRIE_LEAF_ROOT;
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->dst_address, 0);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->dst_address, 0);
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 0);
+ leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 0);
}
tcp0 = (void *) (ip0 + 1);
@@ -709,20 +727,20 @@ ip4_lookup_inline (vlib_main_t * vm,
if (! lookup_for_responses_to_locally_received_packets)
{
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->dst_address, 1);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->dst_address, 1);
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 1);
+ leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 1);
}
if (! lookup_for_responses_to_locally_received_packets)
{
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->dst_address, 2);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->dst_address, 2);
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2);
+ leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 2);
}
if (! lookup_for_responses_to_locally_received_packets)
{
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->dst_address, 3);
- leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->dst_address, 3);
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3);
+ leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 3);
}
if (lookup_for_responses_to_locally_received_packets)
@@ -741,10 +759,10 @@ ip4_lookup_inline (vlib_main_t * vm,
}
ASSERT (adj_index0 == ip4_fib_lookup_with_table (im, fib_index0,
- &ip0->dst_address,
+ dst_addr0,
/* no_default_route */ 0));
ASSERT (adj_index1 == ip4_fib_lookup_with_table (im, fib_index1,
- &ip1->dst_address,
+ dst_addr1,
/* no_default_route */ 0));
adj0 = ip_get_adjacency (lm, adj_index0);
adj1 = ip_get_adjacency (lm, adj_index1);
@@ -840,6 +858,7 @@ ip4_lookup_inline (vlib_main_t * vm,
ip_adjacency_t * adj0;
ip4_fib_mtrie_t * mtrie0;
ip4_fib_mtrie_leaf_t leaf0;
+ ip4_address_t * dst_addr0;
__attribute__((unused)) u32 pi0, fib_index0, adj_index0, is_tcp_udp0;
u32 flow_hash_config0, hash_c0;
@@ -850,6 +869,17 @@ ip4_lookup_inline (vlib_main_t * vm,
ip0 = vlib_buffer_get_current (p0);
+ if (is_indirect)
+ {
+ ip_adjacency_t * iadj0;
+ iadj0 = ip_get_adjacency (lm, vnet_buffer(p0)->ip.adj_index[VLIB_TX]);
+ dst_addr0 = &iadj0->indirect.next_hop.ip4;
+ }
+ else
+ {
+ dst_addr0 = &ip0->dst_address;
+ }
+
fib_index0 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p0)->sw_if_index[VLIB_RX]);
fib_index0 = (vnet_buffer(p0)->sw_if_index[VLIB_TX] == (u32)~0) ?
fib_index0 : vnet_buffer(p0)->sw_if_index[VLIB_TX];
@@ -860,7 +890,7 @@ ip4_lookup_inline (vlib_main_t * vm,
leaf0 = IP4_FIB_MTRIE_LEAF_ROOT;
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->dst_address, 0);
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 0);
}
tcp0 = (void *) (ip0 + 1);
@@ -869,13 +899,13 @@ ip4_lookup_inline (vlib_main_t * vm,
|| ip0->protocol == IP_PROTOCOL_UDP);
if (! lookup_for_responses_to_locally_received_packets)
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->dst_address, 1);
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 1);
if (! lookup_for_responses_to_locally_received_packets)
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->dst_address, 2);
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2);
if (! lookup_for_responses_to_locally_received_packets)
- leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->dst_address, 3);
+ leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3);
if (lookup_for_responses_to_locally_received_packets)
adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX];
@@ -887,7 +917,7 @@ ip4_lookup_inline (vlib_main_t * vm,
}
ASSERT (adj_index0 == ip4_fib_lookup_with_table (im, fib_index0,
- &ip0->dst_address,
+ dst_addr0,
/* no_default_route */ 0));
adj0 = ip_get_adjacency (lm, adj_index0);
@@ -945,7 +975,9 @@ ip4_lookup (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
- return ip4_lookup_inline (vm, node, frame, /* lookup_for_responses_to_locally_received_packets */ 0);
+ return ip4_lookup_inline (vm, node, frame,
+ /* lookup_for_responses_to_locally_received_packets */ 0,
+ /* is_indirect */ 0);
}
@@ -1312,6 +1344,26 @@ VLIB_REGISTER_NODE (ip4_lookup_node) = {
.next_nodes = IP4_LOOKUP_NEXT_NODES,
};
+static uword
+ip4_indirect (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return ip4_lookup_inline (vm, node, frame,
+ /* lookup_for_responses_to_locally_received_packets */ 0,
+ /* is_indirect */ 1);
+}
+
+VLIB_REGISTER_NODE (ip4_indirect_node) = {
+ .function = ip4_indirect,
+ .name = "ip4-indirect",
+ .vector_size = sizeof (u32),
+
+ .n_next_nodes = IP_LOOKUP_N_NEXT,
+ .next_nodes = IP4_LOOKUP_NEXT_NODES,
+};
+
+
/* Global IP4 main. */
ip4_main_t ip4_main;
diff --git a/vnet/vnet/ip/ip6_forward.c b/vnet/vnet/ip/ip6_forward.c
index db74c75b37b..e57269a0844 100644
--- a/vnet/vnet/ip/ip6_forward.c
+++ b/vnet/vnet/ip/ip6_forward.c
@@ -367,10 +367,12 @@ ip6_add_del_route_next_hop (ip6_main_t * im,
}
else
{
- vnm->api_errno = VNET_API_ERROR_UNKNOWN_DESTINATION;
- error = clib_error_return (0, "next-hop %U/128 not in FIB",
- format_ip6_address, next_hop);
- goto done;
+ ip_adjacency_t add_adj;
+ add_adj.lookup_next_index = IP_LOOKUP_NEXT_INDIRECT;
+ add_adj.indirect.next_hop.ip6.as_u64[0] = next_hop->as_u64[0];
+ add_adj.indirect.next_hop.ip6.as_u64[1] = next_hop->as_u64[1];
+ add_adj.explicit_fib_index = explicit_fib_index;
+ ip_add_adjacency (lm, &add_adj, 1, &nh_adj_index);
}
}
else
@@ -641,10 +643,11 @@ void ip6_delete_matching_routes (ip6_main_t * im,
ip6_maybe_remap_adjacencies (im, table_index_or_table_id, flags);
}
-static uword
-ip6_lookup (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+always_inline uword
+ip6_lookup_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ int is_indirect)
{
ip6_main_t * im = &ip6_main;
ip_lookup_main_t * lm = &im->lookup_main;
@@ -669,6 +672,7 @@ ip6_lookup (vlib_main_t * vm,
ip_lookup_next_t next0, next1;
ip6_header_t * ip0, * ip1;
ip_adjacency_t * adj0, * adj1;
+ ip6_address_t * dst_addr0, * dst_addr1;
u32 fib_index0, fib_index1;
u32 flow_hash_config0, flow_hash_config1;
@@ -694,6 +698,20 @@ ip6_lookup (vlib_main_t * vm,
ip0 = vlib_buffer_get_current (p0);
ip1 = vlib_buffer_get_current (p1);
+ if (is_indirect)
+ {
+ ip_adjacency_t * iadj0, * iadj1;
+ iadj0 = ip_get_adjacency (lm, vnet_buffer(p0)->ip.adj_index[VLIB_TX]);
+ iadj1 = ip_get_adjacency (lm, vnet_buffer(p1)->ip.adj_index[VLIB_TX]);
+ dst_addr0 = &iadj0->indirect.next_hop.ip6;
+ dst_addr1 = &iadj1->indirect.next_hop.ip6;
+ }
+ else
+ {
+ dst_addr0 = &ip0->dst_address;
+ dst_addr1 = &ip1->dst_address;
+ }
+
fib_index0 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p0)->sw_if_index[VLIB_RX]);
fib_index1 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p1)->sw_if_index[VLIB_RX]);
@@ -702,10 +720,8 @@ ip6_lookup (vlib_main_t * vm,
fib_index1 = (vnet_buffer(p1)->sw_if_index[VLIB_TX] == (u32)~0) ?
fib_index1 : vnet_buffer(p1)->sw_if_index[VLIB_TX];
- adj_index0 = ip6_fib_lookup_with_table (im, fib_index0,
- &ip0->dst_address);
- adj_index1 = ip6_fib_lookup_with_table (im, fib_index1,
- &ip1->dst_address);
+ adj_index0 = ip6_fib_lookup_with_table (im, fib_index0, dst_addr0);
+ adj_index1 = ip6_fib_lookup_with_table (im, fib_index1, dst_addr1);
adj0 = ip_get_adjacency (lm, adj_index0);
adj1 = ip_get_adjacency (lm, adj_index1);
@@ -713,13 +729,13 @@ ip6_lookup (vlib_main_t * vm,
if (PREDICT_FALSE (adj0->explicit_fib_index != ~0))
{
adj_index0 = ip6_fib_lookup_with_table
- (im, adj0->explicit_fib_index, &ip0->dst_address);
+ (im, adj0->explicit_fib_index, dst_addr0);
adj0 = ip_get_adjacency (lm, adj_index0);
}
if (PREDICT_FALSE (adj1->explicit_fib_index != ~0))
{
adj_index1 = ip6_fib_lookup_with_table
- (im, adj1->explicit_fib_index, &ip1->dst_address);
+ (im, adj1->explicit_fib_index, dst_addr1);
adj1 = ip_get_adjacency (lm, adj_index1);
}
@@ -818,6 +834,7 @@ ip6_lookup (vlib_main_t * vm,
u32 pi0, adj_index0;
ip_lookup_next_t next0;
ip_adjacency_t * adj0;
+ ip6_address_t * dst_addr0;
u32 fib_index0, flow_hash_config0;
pi0 = from[0];
@@ -827,6 +844,17 @@ ip6_lookup (vlib_main_t * vm,
ip0 = vlib_buffer_get_current (p0);
+ if (is_indirect)
+ {
+ ip_adjacency_t * iadj0;
+ iadj0 = ip_get_adjacency (lm, vnet_buffer(p0)->ip.adj_index[VLIB_TX]);
+ dst_addr0 = &iadj0->indirect.next_hop.ip6;
+ }
+ else
+ {
+ dst_addr0 = &ip0->dst_address;
+ }
+
fib_index0 = vec_elt (im->fib_index_by_sw_if_index, vnet_buffer (p0)->sw_if_index[VLIB_RX]);
fib_index0 = (vnet_buffer(p0)->sw_if_index[VLIB_TX] == (u32)~0) ?
fib_index0 : vnet_buffer(p0)->sw_if_index[VLIB_TX];
@@ -834,15 +862,14 @@ ip6_lookup (vlib_main_t * vm,
flow_hash_config0 =
vec_elt_at_index (im->fibs,fib_index0)->flow_hash_config;
- adj_index0 = ip6_fib_lookup_with_table (im, fib_index0,
- &ip0->dst_address);
+ adj_index0 = ip6_fib_lookup_with_table (im, fib_index0, dst_addr0);
adj0 = ip_get_adjacency (lm, adj_index0);
if (PREDICT_FALSE (adj0->explicit_fib_index != ~0))
{
- adj_index0 = ip6_fib_lookup_with_table
- (im, adj0->explicit_fib_index, &ip0->dst_address);
+ adj_index0 = ip6_fib_lookup_with_table
+ (im, adj0->explicit_fib_index, dst_addr0);
adj0 = ip_get_adjacency (lm, adj_index0);
}
@@ -1206,6 +1233,14 @@ ip6_sw_interface_add_del (vnet_main_t * vnm,
VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip6_sw_interface_add_del);
+static uword
+ip6_lookup (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return ip6_lookup_inline (vm, node, frame, /* is_indirect */ 0);
+}
+
VLIB_REGISTER_NODE (ip6_lookup_node) = {
.function = ip6_lookup,
.name = "ip6-lookup",
@@ -1215,6 +1250,24 @@ VLIB_REGISTER_NODE (ip6_lookup_node) = {
.next_nodes = IP6_LOOKUP_NEXT_NODES,
};
+static uword
+ip6_indirect (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return ip6_lookup_inline (vm, node, frame, /* is_indirect */ 1);
+}
+
+
+VLIB_REGISTER_NODE (ip6_indirect_node) = {
+ .function = ip6_indirect,
+ .name = "ip6-indirect",
+ .vector_size = sizeof (u32),
+
+ .n_next_nodes = IP_LOOKUP_N_NEXT,
+ .next_nodes = IP6_LOOKUP_NEXT_NODES,
+};
+
typedef struct {
/* Adjacency taken. */
u32 adj_index;
diff --git a/vnet/vnet/ip/lookup.c b/vnet/vnet/ip/lookup.c
index df14a5fefe3..2f638f7799b 100644
--- a/vnet/vnet/ip/lookup.c
+++ b/vnet/vnet/ip/lookup.c
@@ -948,6 +948,7 @@ u8 * format_ip_lookup_next (u8 * s, va_list * args)
case IP_LOOKUP_NEXT_MAP: t = "map"; break;
case IP_LOOKUP_NEXT_MAP_T: t = "map-t"; break;
case IP_LOOKUP_NEXT_SIXRD: t = "sixrd"; break;
+ case IP_LOOKUP_NEXT_INDIRECT: t="indirect"; break;
case IP_LOOKUP_NEXT_REWRITE:
break;
}
@@ -1009,6 +1010,8 @@ u8 * format_ip_adjacency (u8 * s, va_list * args)
case IP_LOOKUP_NEXT_CLASSIFY:
s = format (s, " table %d", adj->classify.table_index);
+ case IP_LOOKUP_NEXT_INDIRECT:
+ s = format (s, " via %U", format_ip46_address, &adj->indirect.next_hop);
default:
break;
}
diff --git a/vnet/vnet/ip/lookup.h b/vnet/vnet/ip/lookup.h
index 62de2105133..e9a49124105 100644
--- a/vnet/vnet/ip/lookup.h
+++ b/vnet/vnet/ip/lookup.h
@@ -79,6 +79,9 @@ typedef enum {
/* This packets needs to go to 6RD (RFC5969) */
IP_LOOKUP_NEXT_SIXRD,
+ /* This packets needs to go to indirect next hop */
+ IP_LOOKUP_NEXT_INDIRECT,
+
/* Hop-by-hop header handling */
IP_LOOKUP_NEXT_HOP_BY_HOP,
IP_LOOKUP_NEXT_ADD_HOP_BY_HOP,
@@ -101,6 +104,7 @@ typedef enum {
[IP_LOOKUP_NEXT_HOP_BY_HOP] = "ip4-hop-by-hop", \
[IP_LOOKUP_NEXT_ADD_HOP_BY_HOP] = "ip4-add-hop-by-hop", \
[IP_LOOKUP_NEXT_POP_HOP_BY_HOP] = "ip4-pop-hop-by-hop", \
+ [IP_LOOKUP_NEXT_INDIRECT] = "ip4-indirect", \
}
#define IP6_LOOKUP_NEXT_NODES { \
@@ -117,6 +121,7 @@ typedef enum {
[IP_LOOKUP_NEXT_HOP_BY_HOP] = "ip6-hop-by-hop", \
[IP_LOOKUP_NEXT_ADD_HOP_BY_HOP] = "ip6-add-hop-by-hop", \
[IP_LOOKUP_NEXT_POP_HOP_BY_HOP] = "ip6-pop-hop-by-hop", \
+ [IP_LOOKUP_NEXT_INDIRECT] = "ip6-indirect", \
}
/* Flow hash configuration */
@@ -170,12 +175,15 @@ typedef struct {
/* IP_LOOKUP_NEXT_ARP only */
struct {
ip46_address_t next_hop;
- u32 next_adj_index_with_same_next_hop;
} arp;
/* IP_LOOKUP_NEXT_CLASSIFY only */
struct {
u16 table_index;
} classify;
+ /* IP_LOOKUP_NEXT_INDIRECT only */
+ struct {
+ ip46_address_t next_hop;
+ } indirect;
};
STRUCT_MARK(signature_end);