diff options
Diffstat (limited to 'usr.sbin/mrouted/igmp.c')
| -rw-r--r-- | usr.sbin/mrouted/igmp.c | 53 |
1 files changed, 43 insertions, 10 deletions
diff --git a/usr.sbin/mrouted/igmp.c b/usr.sbin/mrouted/igmp.c index 5fe08e7fd0d9..00eeff56500b 100644 --- a/usr.sbin/mrouted/igmp.c +++ b/usr.sbin/mrouted/igmp.c @@ -7,7 +7,7 @@ * Leland Stanford Junior University. * * - * $Id: igmp.c,v 3.5 1995/05/09 01:00:39 fenner Exp $ + * $Id: igmp.c,v 3.6 1995/06/25 18:52:55 fenner Exp $ */ @@ -17,8 +17,8 @@ /* * Exported variables. */ -char *recv_buf; /* input packet buffer */ -char *send_buf; /* output packet buffer */ +char *recv_buf; /* input packet buffer */ +char *send_buf; /* output packet buffer */ int igmp_socket; /* socket for all network I/O */ u_int32 allhosts_group; /* All hosts addr in net order */ u_int32 allrtrs_group; /* All-Routers " in net order */ @@ -26,10 +26,18 @@ u_int32 dvmrp_group; /* DVMRP grp addr in net order */ u_int32 dvmrp_genid; /* IGMP generation id */ /* + * Local function definitions. + */ +/* u_char promoted to u_int */ +static char * packet_kind __P((u_int type, u_int code)); +static int igmp_log_level __P((u_int type, u_int code)); + +/* * Open and initialize the igmp socket, and fill in the non-changing * IP header fields in the output packet buffer. */ -void init_igmp() +void +init_igmp() { struct ip *ip; @@ -66,8 +74,9 @@ void init_igmp() #define PIM_GRAFT 6 #define PIM_GRAFT_ACK 7 -static char *packet_kind(type, code) - u_char type, code; +static char * +packet_kind(type, code) + u_int type, code; { switch (type) { case IGMP_HOST_MEMBERSHIP_QUERY: return "membership query "; @@ -109,7 +118,8 @@ static char *packet_kind(type, code) * Process a newly received IGMP packet that is sitting in the input * packet buffer. */ -void accept_igmp(recvlen) +void +accept_igmp(recvlen) int recvlen; { register u_int32 src, dst, group; @@ -201,12 +211,12 @@ void accept_igmp(recvlen) return; case DVMRP_NEIGHBORS: - accept_neighbors(src, dst, (char *)(igmp+1), igmpdatalen, + accept_neighbors(src, dst, (u_char *)(igmp+1), igmpdatalen, group); return; case DVMRP_NEIGHBORS2: - accept_neighbors2(src, dst, (char *)(igmp+1), igmpdatalen, + accept_neighbors2(src, dst, (u_char *)(igmp+1), igmpdatalen, group); return; @@ -250,6 +260,29 @@ void accept_igmp(recvlen) } } +/* + * Some IGMP messages are more important than others. This routine + * determines the logging level at which to log a send error (often + * "No route to host"). This is important when there is asymmetric + * reachability and someone is trying to, i.e., mrinfo me periodically. + */ +static int +igmp_log_level(type, code) + u_int type, code; +{ + switch (type) { + case IGMP_MTRACE_RESP: + return LOG_INFO; + + case IGMP_DVMRP: + switch (code) { + case DVMRP_NEIGHBORS: + case DVMRP_NEIGHBORS2: + return LOG_INFO; + } + } + return LOG_WARNING; +} /* * Construct an IGMP message in the output packet buffer. The caller may @@ -294,7 +327,7 @@ send_igmp(src, dst, type, code, group, datalen) if (errno == ENETDOWN) check_vif_state(); else - log(LOG_WARNING, errno, + log(igmp_log_level(type, code), errno, "sendto to %s on %s", inet_fmt(dst, s1), inet_fmt(src, s2)); } |