diff options
Diffstat (limited to 'src/vnet/fib/fib_path.c')
| -rw-r--r-- | src/vnet/fib/fib_path.c | 222 |
1 files changed, 178 insertions, 44 deletions
diff --git a/src/vnet/fib/fib_path.c b/src/vnet/fib/fib_path.c index 6b202a97..f81f4170 100644 --- a/src/vnet/fib/fib_path.c +++ b/src/vnet/fib/fib_path.c @@ -21,6 +21,8 @@ #include <vnet/dpo/receive_dpo.h> #include <vnet/dpo/load_balance_map.h> #include <vnet/dpo/lookup_dpo.h> +#include <vnet/dpo/interface_dpo.h> +#include <vnet/dpo/mpls_disposition.h> #include <vnet/adj/adj.h> #include <vnet/adj/adj_mcast.h> @@ -67,6 +69,10 @@ typedef enum fib_path_type_t_ { */ FIB_PATH_TYPE_DEAG, /** + * interface receive. + */ + FIB_PATH_TYPE_INTF_RX, + /** * receive. it's for-us. */ FIB_PATH_TYPE_RECEIVE, @@ -88,6 +94,7 @@ typedef enum fib_path_type_t_ { [FIB_PATH_TYPE_SPECIAL] = "special", \ [FIB_PATH_TYPE_EXCLUSIVE] = "exclusive", \ [FIB_PATH_TYPE_DEAG] = "deag", \ + [FIB_PATH_TYPE_INTF_RX] = "intf-rx", \ [FIB_PATH_TYPE_RECEIVE] = "receive", \ } @@ -220,10 +227,16 @@ typedef struct fib_path_t_ { * The next-hop */ ip46_address_t fp_ip; - /** - * The local label to resolve through. - */ - mpls_label_t fp_local_label; + struct { + /** + * The local label to resolve through. + */ + mpls_label_t fp_local_label; + /** + * The EOS bit of the resolving label + */ + mpls_eos_bit_t fp_eos; + }; } fp_nh; /** * The FIB table index in which to find the next-hop. @@ -254,6 +267,10 @@ typedef struct fib_path_t_ { * The FIB index in which to perfom the next lookup */ fib_node_index_t fp_tbl_id; + /** + * The RPF-ID to tag the packets with + */ + fib_rpf_id_t fp_rpf_id; } deag; struct { } special; @@ -273,6 +290,12 @@ typedef struct fib_path_t_ { */ ip46_address_t fp_addr; } receive; + struct { + /** + * The interface on which the packets will be input. + */ + u32 fp_interface; + } intf_rx; }; STRUCT_MARK(path_hash_end); @@ -444,9 +467,11 @@ format_fib_path (u8 * s, va_list * args) case FIB_PATH_TYPE_RECURSIVE: if (FIB_PROTOCOL_MPLS == path->fp_nh_proto) { - s = format (s, "via %U", + s = format (s, "via %U %U", format_mpls_unicast_label, - path->recursive.fp_nh.fp_local_label); + path->recursive.fp_nh.fp_local_label, + format_mpls_eos_bit, + path->recursive.fp_nh.fp_eos); } else { @@ -465,6 +490,7 @@ format_fib_path (u8 * s, va_list * args) break; case FIB_PATH_TYPE_RECEIVE: + case FIB_PATH_TYPE_INTF_RX: case FIB_PATH_TYPE_SPECIAL: case FIB_PATH_TYPE_DEAG: case FIB_PATH_TYPE_EXCLUSIVE: @@ -736,6 +762,7 @@ fib_path_unresolve (fib_path_t *path) break; case FIB_PATH_TYPE_SPECIAL: case FIB_PATH_TYPE_RECEIVE: + case FIB_PATH_TYPE_INTF_RX: case FIB_PATH_TYPE_DEAG: /* * these hold only the path's DPO, which is reset below. @@ -754,16 +781,24 @@ fib_path_unresolve (fib_path_t *path) } static fib_forward_chain_type_t -fib_path_proto_to_chain_type (fib_protocol_t proto) +fib_path_to_chain_type (const fib_path_t *path) { - switch (proto) + switch (path->fp_nh_proto) { case FIB_PROTOCOL_IP4: return (FIB_FORW_CHAIN_TYPE_UNICAST_IP4); case FIB_PROTOCOL_IP6: return (FIB_FORW_CHAIN_TYPE_UNICAST_IP6); case FIB_PROTOCOL_MPLS: - return (FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS); + if (FIB_PATH_TYPE_RECURSIVE == path->fp_type && + MPLS_EOS == path->recursive.fp_nh.fp_eos) + { + return (FIB_FORW_CHAIN_TYPE_MPLS_EOS); + } + else + { + return (FIB_FORW_CHAIN_TYPE_MPLS_EOS); + } } return (FIB_FORW_CHAIN_TYPE_UNICAST_IP4); } @@ -793,7 +828,7 @@ fib_path_back_walk_notify (fib_node_t *node, */ fib_path_recursive_adj_update( path, - fib_path_proto_to_chain_type(path->fp_nh_proto), + fib_path_to_chain_type(path), &path->fp_dpo); } if ((FIB_NODE_BW_REASON_FLAG_ADJ_UPDATE & ctx->fnbw_reason) || @@ -931,6 +966,8 @@ FIXME comment path->fp_oper_flags |= FIB_PATH_OPER_FLAG_DROP; } break; + case FIB_PATH_TYPE_INTF_RX: + ASSERT(0); case FIB_PATH_TYPE_DEAG: /* * FIXME When VRF delete is allowed this will need a poke. @@ -986,6 +1023,14 @@ fib_path_route_flags_to_cfg_flags (const fib_route_path_t *rpath) cfg_flags |= FIB_PATH_CFG_FLAG_LOCAL; if (rpath->frp_flags & FIB_ROUTE_PATH_ATTACHED) cfg_flags |= FIB_PATH_CFG_FLAG_ATTACHED; + if (rpath->frp_flags & FIB_ROUTE_PATH_INTF_RX) + cfg_flags |= FIB_PATH_CFG_FLAG_INTF_RX; + if (rpath->frp_flags & FIB_ROUTE_PATH_RPF_ID) + cfg_flags |= FIB_PATH_CFG_FLAG_RPF_ID; + if (rpath->frp_flags & FIB_ROUTE_PATH_EXCLUSIVE) + cfg_flags |= FIB_PATH_CFG_FLAG_EXCLUSIVE; + if (rpath->frp_flags & FIB_ROUTE_PATH_DROP) + cfg_flags |= FIB_PATH_CFG_FLAG_DROP; return (cfg_flags); } @@ -998,8 +1043,6 @@ fib_path_route_flags_to_cfg_flags (const fib_route_path_t *rpath) */ fib_node_index_t fib_path_create (fib_node_index_t pl_index, - fib_protocol_t nh_proto, - fib_path_cfg_flags_t flags, const fib_route_path_t *rpath) { fib_path_t *path; @@ -1012,7 +1055,7 @@ fib_path_create (fib_node_index_t pl_index, dpo_reset(&path->fp_dpo); path->fp_pl_index = pl_index; - path->fp_nh_proto = nh_proto; + path->fp_nh_proto = rpath->frp_proto; path->fp_via_fib = FIB_NODE_INDEX_INVALID; path->fp_weight = rpath->frp_weight; if (0 == path->fp_weight) @@ -1023,8 +1066,7 @@ fib_path_create (fib_node_index_t pl_index, */ path->fp_weight = 1; } - path->fp_cfg_flags = flags; - path->fp_cfg_flags |= fib_path_route_flags_to_cfg_flags(rpath); + path->fp_cfg_flags = fib_path_route_flags_to_cfg_flags(rpath); /* * deduce the path's tpye from the parementers and save what is needed. @@ -1035,6 +1077,17 @@ fib_path_create (fib_node_index_t pl_index, path->receive.fp_interface = rpath->frp_sw_if_index; path->receive.fp_addr = rpath->frp_addr; } + else if (path->fp_cfg_flags & FIB_PATH_CFG_FLAG_INTF_RX) + { + path->fp_type = FIB_PATH_TYPE_INTF_RX; + path->intf_rx.fp_interface = rpath->frp_sw_if_index; + } + else if (path->fp_cfg_flags & FIB_PATH_CFG_FLAG_RPF_ID) + { + path->fp_type = FIB_PATH_TYPE_DEAG; + path->deag.fp_tbl_id = rpath->frp_fib_index; + path->deag.fp_rpf_id = rpath->frp_rpf_id; + } else if (~0 != rpath->frp_sw_if_index) { if (ip46_address_is_zero(&rpath->frp_addr)) @@ -1069,6 +1122,7 @@ fib_path_create (fib_node_index_t pl_index, if (FIB_PROTOCOL_MPLS == path->fp_nh_proto) { path->recursive.fp_nh.fp_local_label = rpath->frp_local_label; + path->recursive.fp_nh.fp_eos = rpath->frp_eos; } else { @@ -1238,17 +1292,13 @@ fib_path_cmp_i (const fib_path_t *path1, res = ip46_address_cmp(&path1->attached_next_hop.fp_nh, &path2->attached_next_hop.fp_nh); if (0 == res) { - res = vnet_sw_interface_compare( - vnet_get_main(), - path1->attached_next_hop.fp_interface, - path2->attached_next_hop.fp_interface); + res = (path1->attached_next_hop.fp_interface - + path2->attached_next_hop.fp_interface); } break; case FIB_PATH_TYPE_ATTACHED: - res = vnet_sw_interface_compare( - vnet_get_main(), - path1->attached.fp_interface, - path2->attached.fp_interface); + res = (path1->attached.fp_interface - + path2->attached.fp_interface); break; case FIB_PATH_TYPE_RECURSIVE: res = ip46_address_cmp(&path1->recursive.fp_nh, @@ -1261,6 +1311,13 @@ fib_path_cmp_i (const fib_path_t *path1, break; case FIB_PATH_TYPE_DEAG: res = (path1->deag.fp_tbl_id - path2->deag.fp_tbl_id); + if (0 == res) + { + res = (path1->deag.fp_rpf_id - path2->deag.fp_rpf_id); + } + break; + case FIB_PATH_TYPE_INTF_RX: + res = (path1->intf_rx.fp_interface - path2->intf_rx.fp_interface); break; case FIB_PATH_TYPE_SPECIAL: case FIB_PATH_TYPE_RECEIVE: @@ -1336,22 +1393,22 @@ fib_path_cmp_w_route_path (fib_node_index_t path_index, &rpath->frp_addr); if (0 == res) { - res = vnet_sw_interface_compare( - vnet_get_main(), - path->attached_next_hop.fp_interface, - rpath->frp_sw_if_index); + res = (path->attached_next_hop.fp_interface - + rpath->frp_sw_if_index); } break; case FIB_PATH_TYPE_ATTACHED: - res = vnet_sw_interface_compare( - vnet_get_main(), - path->attached.fp_interface, - rpath->frp_sw_if_index); + res = (path->attached.fp_interface - rpath->frp_sw_if_index); break; case FIB_PATH_TYPE_RECURSIVE: if (FIB_PROTOCOL_MPLS == path->fp_nh_proto) { res = path->recursive.fp_nh.fp_local_label - rpath->frp_local_label; + + if (res == 0) + { + res = path->recursive.fp_nh.fp_eos - rpath->frp_eos; + } } else { @@ -1364,9 +1421,16 @@ fib_path_cmp_w_route_path (fib_node_index_t path_index, res = (path->recursive.fp_tbl_id - rpath->frp_fib_index); } break; + case FIB_PATH_TYPE_INTF_RX: + res = (path->intf_rx.fp_interface - rpath->frp_sw_if_index); + break; case FIB_PATH_TYPE_DEAG: res = (path->deag.fp_tbl_id - rpath->frp_fib_index); - break; + if (0 == res) + { + res = (path->deag.fp_rpf_id - rpath->frp_rpf_id); + } + break; case FIB_PATH_TYPE_SPECIAL: case FIB_PATH_TYPE_RECEIVE: case FIB_PATH_TYPE_EXCLUSIVE: @@ -1465,6 +1529,7 @@ fib_path_recursive_loop_detect (fib_node_index_t path_index, case FIB_PATH_TYPE_SPECIAL: case FIB_PATH_TYPE_DEAG: case FIB_PATH_TYPE_RECEIVE: + case FIB_PATH_TYPE_INTF_RX: case FIB_PATH_TYPE_EXCLUSIVE: /* * these path types cannot be part of a loop, since they are the leaves @@ -1563,7 +1628,9 @@ fib_path_resolve (fib_node_index_t path_index) if (FIB_PROTOCOL_MPLS == path->fp_nh_proto) { - fib_prefix_from_mpls_label(path->recursive.fp_nh.fp_local_label, &pfx); + fib_prefix_from_mpls_label(path->recursive.fp_nh.fp_local_label, + path->recursive.fp_nh.fp_eos, + &pfx); } else { @@ -1592,7 +1659,7 @@ fib_path_resolve (fib_node_index_t path_index) */ fib_path_recursive_adj_update( path, - fib_path_proto_to_chain_type(path->fp_nh_proto), + fib_path_to_chain_type(path), &path->fp_dpo); break; @@ -1605,16 +1672,25 @@ fib_path_resolve (fib_node_index_t path_index) drop_dpo_get(fib_proto_to_dpo(path->fp_nh_proto))); break; case FIB_PATH_TYPE_DEAG: + { /* * Resolve via a lookup DPO. * FIXME. control plane should add routes with a table ID */ - lookup_dpo_add_or_lock_w_fib_index(path->deag.fp_tbl_id, - fib_proto_to_dpo(path->fp_nh_proto), - LOOKUP_INPUT_DST_ADDR, - LOOKUP_TABLE_FROM_CONFIG, - &path->fp_dpo); + lookup_cast_t cast; + + cast = (path->fp_cfg_flags & FIB_PATH_CFG_FLAG_RPF_ID ? + LOOKUP_MULTICAST : + LOOKUP_UNICAST); + + lookup_dpo_add_or_lock_w_fib_index(path->deag.fp_tbl_id, + fib_proto_to_dpo(path->fp_nh_proto), + cast, + LOOKUP_INPUT_DST_ADDR, + LOOKUP_TABLE_FROM_CONFIG, + &path->fp_dpo); break; + } case FIB_PATH_TYPE_RECEIVE: /* * Resolve via a receive DPO. @@ -1624,6 +1700,15 @@ fib_path_resolve (fib_node_index_t path_index) &path->receive.fp_addr, &path->fp_dpo); break; + case FIB_PATH_TYPE_INTF_RX: { + /* + * Resolve via a receive DPO. + */ + interface_dpo_add_or_lock(fib_proto_to_dpo(path->fp_nh_proto), + path->intf_rx.fp_interface, + &path->fp_dpo); + break; + } case FIB_PATH_TYPE_EXCLUSIVE: /* * Resolve via the user provided DPO @@ -1652,6 +1737,7 @@ fib_path_get_resolving_interface (fib_node_index_t path_index) return (path->receive.fp_interface); case FIB_PATH_TYPE_RECURSIVE: return (fib_entry_get_resolving_interface(path->fp_via_fib)); + case FIB_PATH_TYPE_INTF_RX: case FIB_PATH_TYPE_SPECIAL: case FIB_PATH_TYPE_DEAG: case FIB_PATH_TYPE_EXCLUSIVE: @@ -1743,6 +1829,7 @@ fib_path_contribute_urpf (fib_node_index_t path_index, case FIB_PATH_TYPE_DEAG: case FIB_PATH_TYPE_RECEIVE: + case FIB_PATH_TYPE_INTF_RX: /* * these path types don't link to an adj */ @@ -1751,6 +1838,44 @@ fib_path_contribute_urpf (fib_node_index_t path_index, } void +fib_path_stack_mpls_disp (fib_node_index_t path_index, + dpo_proto_t payload_proto, + dpo_id_t *dpo) +{ + fib_path_t *path; + + path = fib_path_get(path_index); + + ASSERT(path); + + switch (path->fp_type) + { + case FIB_PATH_TYPE_DEAG: + { + dpo_id_t tmp = DPO_INVALID; + + dpo_copy(&tmp, dpo); + dpo_set(dpo, + DPO_MPLS_DISPOSITION, + payload_proto, + mpls_disp_dpo_create(payload_proto, + path->deag.fp_rpf_id, + &tmp)); + dpo_reset(&tmp); + break; + } + case FIB_PATH_TYPE_RECEIVE: + case FIB_PATH_TYPE_ATTACHED: + case FIB_PATH_TYPE_ATTACHED_NEXT_HOP: + case FIB_PATH_TYPE_RECURSIVE: + case FIB_PATH_TYPE_INTF_RX: + case FIB_PATH_TYPE_EXCLUSIVE: + case FIB_PATH_TYPE_SPECIAL: + break; + } +} + +void fib_path_contribute_forwarding (fib_node_index_t path_index, fib_forward_chain_type_t fct, dpo_id_t *dpo) @@ -1769,7 +1894,7 @@ fib_path_contribute_forwarding (fib_node_index_t path_index, * This then represents the path's 'native' protocol; IP. * For all others will need to go find something else. */ - if (fib_path_proto_to_chain_type(path->fp_nh_proto) == fct) + if (fib_path_to_chain_type(path) == fct) { dpo_copy(dpo, &path->fp_dpo); } @@ -1813,10 +1938,10 @@ fib_path_contribute_forwarding (fib_node_index_t path_index, case FIB_FORW_CHAIN_TYPE_UNICAST_IP4: case FIB_FORW_CHAIN_TYPE_UNICAST_IP6: case FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS: - fib_path_recursive_adj_update(path, fct, dpo); - break; case FIB_FORW_CHAIN_TYPE_MCAST_IP4: case FIB_FORW_CHAIN_TYPE_MCAST_IP6: + fib_path_recursive_adj_update(path, fct, dpo); + break; case FIB_FORW_CHAIN_TYPE_ETHERNET: case FIB_FORW_CHAIN_TYPE_NSH: ASSERT(0); @@ -1829,13 +1954,14 @@ fib_path_contribute_forwarding (fib_node_index_t path_index, case FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS: lookup_dpo_add_or_lock_w_table_id(MPLS_FIB_DEFAULT_TABLE_ID, DPO_PROTO_MPLS, + LOOKUP_UNICAST, LOOKUP_INPUT_DST_ADDR, LOOKUP_TABLE_FROM_CONFIG, dpo); break; + case FIB_FORW_CHAIN_TYPE_MPLS_EOS: case FIB_FORW_CHAIN_TYPE_UNICAST_IP4: case FIB_FORW_CHAIN_TYPE_UNICAST_IP6: - case FIB_FORW_CHAIN_TYPE_MPLS_EOS: dpo_copy(dpo, &path->fp_dpo); break; case FIB_FORW_CHAIN_TYPE_MCAST_IP4: @@ -1870,7 +1996,7 @@ fib_path_contribute_forwarding (fib_node_index_t path_index, ai = adj_mcast_add_or_lock(path->fp_nh_proto, fib_forw_chain_type_to_link_type(fct), path->attached.fp_interface); - dpo_set(dpo, DPO_ADJACENCY_MCAST, + dpo_set(dpo, DPO_ADJACENCY, fib_forw_chain_type_to_dpo_proto(fct), ai); adj_unlock(ai); @@ -1878,6 +2004,14 @@ fib_path_contribute_forwarding (fib_node_index_t path_index, break; } break; + case FIB_PATH_TYPE_INTF_RX: + /* + * Create the adj needed for sending IP multicast traffic + */ + interface_dpo_add_or_lock(fib_forw_chain_type_to_dpo_proto(fct), + path->attached.fp_interface, + dpo); + break; case FIB_PATH_TYPE_RECEIVE: case FIB_PATH_TYPE_SPECIAL: dpo_copy(dpo, &path->fp_dpo); |