2 * mc_socket.h: socket based multicast for vlib mc
4 * Copyright (c) 2010 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #ifndef __included_mc_socket_h__
19 #define __included_mc_socket_h__
21 #include <vlib/unix/unix.h>
22 #include <netinet/in.h>
26 struct sockaddr_in tx_addr;
27 } mc_multicast_socket_t;
29 /* TCP catchup socket */
36 u32 output_vector_n_written;
38 u32 connect_in_progress;
39 } mc_socket_catchup_t;
41 typedef struct mc_socket_main_t {
44 /* Multicast mastership/to-relay/from-relay sockets. */
45 mc_multicast_socket_t multicast_sockets[MC_N_TRANSPORT_TYPE];
47 /* Unicast UDP ack sockets */
50 /* TCP catchup server socket */
51 int catchup_server_socket;
53 /* Pool of stream-private catchup sockets */
54 mc_socket_catchup_t *catchups;
56 uword * catchup_index_by_file_descriptor;
60 /* Receive MTU in bytes and VLIB buffers. */
63 /* Vector of RX VLIB buffers. */
65 /* Vector of scatter/gather descriptors for sending/receiving VLIB buffers
67 struct iovec * iovecs;
69 /* IP address of interface to use for multicast. */
70 u32 if_ip4_address_net_byte_order;
75 /* Interface on which to listen for multicasts. */
76 char * multicast_interface_name;
78 /* Multicast address to use (e.g. 0xefff0000).
80 u32 multicast_tx_ip4_address_host_byte_order;
82 /* TTL to use for multicasts. */
85 /* Multicast ports for mastership, joins, etc. will be chosen
86 starting at the given port in host byte order.
87 A total of MC_N_TRANSPORT_TYPE ports will be used. */
88 u32 base_multicast_udp_port_host_byte_order;
92 mc_socket_peer_id_get_address (mc_peer_id_t i)
94 u32 a = ((i.as_u8[0] << 24)
98 return clib_host_to_net_u32 (a);
102 mc_socket_peer_id_get_port (mc_peer_id_t i)
103 { return clib_host_to_net_u16 ((i.as_u8[4] << 8) | i.as_u8[5]); }
105 static_always_inline mc_peer_id_t
106 mc_socket_set_peer_id (u32 address_net_byte_order, u32 port_host_byte_order)
109 u32 a = ntohl (address_net_byte_order);
110 u32 p = port_host_byte_order;
111 i.as_u8[0] = (a >> 24) & 0xff;
112 i.as_u8[1] = (a >> 16) & 0xff;
113 i.as_u8[2] = (a >> 8) & 0xff;
114 i.as_u8[3] = (a >> 0) & 0xff;
115 i.as_u8[4] = (p >> 8) & 0xff;
116 i.as_u8[5] = (p >> 0) & 0xff;
123 mc_socket_main_init (mc_socket_main_t * msm, char **intfc_probe_list,
124 int n_intfcs_to_probe);
125 #endif /* __included_mc_socket_h__ */