diff options
Diffstat (limited to 'pimd/pim_igmp_mtrace.h')
| -rw-r--r-- | pimd/pim_igmp_mtrace.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/pimd/pim_igmp_mtrace.h b/pimd/pim_igmp_mtrace.h new file mode 100644 index 0000000..760b2e4 --- /dev/null +++ b/pimd/pim_igmp_mtrace.h @@ -0,0 +1,105 @@ +/* + * Multicast traceroute for FRRouting + * Copyright (C) 2017 Mladen Sablic + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef PIM_IGMP_MTRACE_H +#define PIM_IGMP_MTRACE_H + +#include <zebra.h> + +#include "pim_igmp.h" + +#define MTRACE_MAX_HOPS (255) +#define MTRACE_UNKNOWN_COUNT (0xffffffff) +#define MTRACE_SRC_MASK_GROUP (0x3f) /* forwarding on group state (*,G) */ +#define MTRACE_SRC_MASK_SOURCE (0x20) /* i.e. 32 forwarding on (S,G) */ + +enum mtrace_fwd_code { + MTRACE_FWD_CODE_NO_ERROR = 0x00, + MTRACE_FWD_CODE_WRONG_IF = 0x01, + MTRACE_FWD_CODE_PRUNE_SENT = 0x02, + MTRACE_FWD_CODE_PRUNE_RCVD = 0x03, + MTRACE_FWD_CODE_SCOPED = 0x04, + MTRACE_FWD_CODE_NO_ROUTE = 0x05, + MTRACE_FWD_CODE_WRONG_LAST_HOP = 0x06, + MTRACE_FWD_CODE_NOT_FORWARDING = 0x07, + MTRACE_FWD_CODE_REACHED_RP = 0x08, + MTRACE_FWD_CODE_RPF_IF = 0x09, + MTRACE_FWD_CODE_NO_MULTICAST = 0x0A, + MTRACE_FWD_CODE_INFO_HIDDEN = 0x0B, + MTRACE_FWD_CODE_NO_SPACE = 0x81, + MTRACE_FWD_CODE_OLD_ROUTER = 0x82, + MTRACE_FWD_CODE_ADMIN_PROHIB = 0x83 +}; + +enum mtrace_rtg_proto { + MTRACE_RTG_PROTO_DVMRP = 1, + MTRACE_RTG_PROTO_MOSPF = 2, + MTRACE_RTG_PROTO_PIM = 3, + MTRACE_RTG_PROTO_CBT = 4, + MTRACE_RTG_PROTO_PIM_SPECIAL = 5, + MTRACE_RTG_PROTO_PIM_STATIC = 6, + MTRACE_RTG_PROTO_DVMRP_STATIC = 7, + MTRACE_RTG_PROTO_PIM_MBGP = 8, + MTRACE_RTG_PROTO_CBT_SPECIAL = 9, + MTRACE_RTG_PROTO_CBT_STATIC = 10, + MTRACE_RTG_PROTO_PIM_ASSERT = 11, +}; + +struct igmp_mtrace_rsp { + uint32_t arrival; + struct in_addr incoming; + struct in_addr outgoing; + struct in_addr prev_hop; + uint32_t in_count; + uint32_t out_count; + uint32_t total; + uint32_t rtg_proto : 8; + uint32_t fwd_ttl : 8; + /* little endian order for next three fields */ + uint32_t src_mask : 6; + uint32_t s : 1; + uint32_t mbz : 1; + uint32_t fwd_code : 8; +} __attribute__((packed)); + +struct igmp_mtrace { + uint8_t type; + uint8_t hops; + uint16_t checksum; + struct in_addr grp_addr; + struct in_addr src_addr; + struct in_addr dst_addr; + struct in_addr rsp_addr; + uint32_t rsp_ttl : 8; + uint32_t qry_id : 24; + struct igmp_mtrace_rsp rsp[0]; +} __attribute__((packed)); + +#define MTRACE_HDR_SIZE (sizeof(struct igmp_mtrace)) +#define MTRACE_RSP_SIZE (sizeof(struct igmp_mtrace_rsp)) + +int igmp_mtrace_recv_qry_req(struct gm_sock *igmp, struct ip *ip_hdr, + struct in_addr from, const char *from_str, + char *igmp_msg, int igmp_msg_len); + +int igmp_mtrace_recv_response(struct gm_sock *igmp, struct ip *ip_hdr, + struct in_addr from, const char *from_str, + char *igmp_msg, int igmp_msg_len); + +#endif /* PIM_IGMP_MTRACE_H */ |