diff options
Diffstat (limited to 'src/vnet/bfd/bfd_udp.c')
| -rw-r--r-- | src/vnet/bfd/bfd_udp.c | 63 |
1 files changed, 49 insertions, 14 deletions
diff --git a/src/vnet/bfd/bfd_udp.c b/src/vnet/bfd/bfd_udp.c index 041e5840e0b..147cd6eda99 100644 --- a/src/vnet/bfd/bfd_udp.c +++ b/src/vnet/bfd/bfd_udp.c @@ -61,6 +61,10 @@ typedef struct u32 ip6_rewrite_idx; /* log class */ vlib_log_class_t log_class; + /* number of active udp4 sessions */ + u32 udp4_sessions_count; + /* number of active udp6 sessions */ + u32 udp6_sessions_count; } bfd_udp_main_t; static vlib_node_registration_t bfd_udp4_input_node; @@ -457,8 +461,8 @@ bfd_udp_key_init (bfd_udp_key_t * key, u32 sw_if_index, } static vnet_api_error_t -bfd_udp_add_session_internal (bfd_udp_main_t * bum, u32 sw_if_index, - u32 desired_min_tx_usec, +bfd_udp_add_session_internal (vlib_main_t * vm, bfd_udp_main_t * bum, + u32 sw_if_index, u32 desired_min_tx_usec, u32 required_min_rx_usec, u8 detect_mult, const ip46_address_t * local_addr, const ip46_address_t * peer_addr, @@ -503,6 +507,14 @@ bfd_udp_add_session_internal (bfd_udp_main_t * bum, u32 sw_if_index, BFD_DBG ("adj_nbr_add_or_lock(FIB_PROTOCOL_IP4, VNET_LINK_IP4, %U, %d) " "returns %d", format_ip46_address, &key->peer_addr, IP46_TYPE_ANY, key->sw_if_index, bus->adj_index); + ++bum->udp4_sessions_count; + if (1 == bum->udp4_sessions_count) + { + udp_register_dst_port (vm, UDP_DST_PORT_bfd4, + bfd_udp4_input_node.index, 1); + udp_register_dst_port (vm, UDP_DST_PORT_bfd_echo4, + bfd_udp_echo4_input_node.index, 1); + } } else { @@ -512,6 +524,14 @@ bfd_udp_add_session_internal (bfd_udp_main_t * bum, u32 sw_if_index, BFD_DBG ("adj_nbr_add_or_lock(FIB_PROTOCOL_IP6, VNET_LINK_IP6, %U, %d) " "returns %d", format_ip46_address, &key->peer_addr, IP46_TYPE_ANY, key->sw_if_index, bus->adj_index); + ++bum->udp6_sessions_count; + if (1 == bum->udp6_sessions_count) + { + udp_register_dst_port (vm, UDP_DST_PORT_bfd6, + bfd_udp6_input_node.index, 0); + udp_register_dst_port (vm, UDP_DST_PORT_bfd_echo6, + bfd_udp_echo6_input_node.index, 0); + } } *bs_out = bs; return bfd_session_set_params (bum->bfd_main, bs, desired_min_tx_usec, @@ -654,12 +674,31 @@ bfd_api_verify_common (u32 sw_if_index, u32 desired_min_tx_usec, } static void -bfd_udp_del_session_internal (bfd_session_t * bs) +bfd_udp_del_session_internal (vlib_main_t * vm, bfd_session_t * bs) { bfd_udp_main_t *bum = &bfd_udp_main; BFD_DBG ("free bfd-udp session, bs_idx=%d", bs->bs_idx); mhash_unset (&bum->bfd_session_idx_by_bfd_key, &bs->udp.key, NULL); adj_unlock (bs->udp.adj_index); + switch (bs->transport) + { + case BFD_TRANSPORT_UDP4: + --bum->udp4_sessions_count; + if (!bum->udp4_sessions_count) + { + udp_unregister_dst_port (vm, UDP_DST_PORT_bfd4, 1); + udp_unregister_dst_port (vm, UDP_DST_PORT_bfd_echo4, 1); + } + break; + case BFD_TRANSPORT_UDP6: + --bum->udp6_sessions_count; + if (!bum->udp6_sessions_count) + { + udp_unregister_dst_port (vm, UDP_DST_PORT_bfd6, 0); + udp_unregister_dst_port (vm, UDP_DST_PORT_bfd_echo6, 0); + } + break; + } bfd_put_session (bum->bfd_main, bs); } @@ -681,8 +720,8 @@ bfd_udp_add_session (u32 sw_if_index, const ip46_address_t * local_addr, if (!rv) { rv = - bfd_udp_add_session_internal (&bfd_udp_main, sw_if_index, - desired_min_tx_usec, + bfd_udp_add_session_internal (vlib_get_main (), &bfd_udp_main, + sw_if_index, desired_min_tx_usec, required_min_rx_usec, detect_mult, local_addr, peer_addr, &bs); } @@ -698,7 +737,7 @@ bfd_udp_add_session (u32 sw_if_index, const ip46_address_t * local_addr, #endif if (rv) { - bfd_udp_del_session_internal (bs); + bfd_udp_del_session_internal (vlib_get_main (), bs); } } if (!rv) @@ -753,7 +792,7 @@ bfd_udp_del_session (u32 sw_if_index, bfd_unlock (bm); return rv; } - bfd_udp_del_session_internal (bs); + bfd_udp_del_session_internal (vlib_get_main (), bs); bfd_unlock (bm); return 0; } @@ -1511,7 +1550,7 @@ bfd_udp_sw_if_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_create) "removal of sw_if_index=%u forces removal of bfd session " "with bs_idx=%u", sw_if_index, (*bs)->bs_idx); bfd_session_set_flags (*bs, 0); - bfd_udp_del_session_internal (*bs); + bfd_udp_del_session_internal (vlib_get_main (), *bs); } return 0; } @@ -1524,16 +1563,12 @@ VNET_SW_INTERFACE_ADD_DEL_FUNCTION (bfd_udp_sw_if_add_del); static clib_error_t * bfd_udp_init (vlib_main_t * vm) { + bfd_udp_main.udp4_sessions_count = 0; + bfd_udp_main.udp6_sessions_count = 0; mhash_init (&bfd_udp_main.bfd_session_idx_by_bfd_key, sizeof (uword), sizeof (bfd_udp_key_t)); bfd_udp_main.bfd_main = &bfd_main; bfd_udp_main.vnet_main = vnet_get_main (); - udp_register_dst_port (vm, UDP_DST_PORT_bfd4, bfd_udp4_input_node.index, 1); - udp_register_dst_port (vm, UDP_DST_PORT_bfd6, bfd_udp6_input_node.index, 0); - udp_register_dst_port (vm, UDP_DST_PORT_bfd_echo4, - bfd_udp_echo4_input_node.index, 1); - udp_register_dst_port (vm, UDP_DST_PORT_bfd_echo6, - bfd_udp_echo6_input_node.index, 0); vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "ip4-arp"); ASSERT (node); bfd_udp_main.ip4_arp_idx = node->index; |