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Update multicast(4) manual page to reflect the new reality of the code.

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This commit is contained in:
Bruce M Simpson 2007-02-25 14:31:41 +00:00
parent 410052125e
commit 0770db8953
1 changed files with 26 additions and 8 deletions
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34
share/man/man4/multicast.4
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@ -25,7 +25,7 @@
.\" .\"
.\" $FreeBSD$ .\" $FreeBSD$
.\" .\"
.Dd September 4, 2003 .Dd February 25, 2007
.Dt MULTICAST 4 .Dt MULTICAST 4
.Os .Os
.\" .\"
@ -160,11 +160,8 @@ memset(&vc, 0, sizeof(vc));
vc.vifc_vifi = vif_index; vc.vifc_vifi = vif_index;
vc.vifc_flags = vif_flags; vc.vifc_flags = vif_flags;
vc.vifc_threshold = min_ttl_threshold; vc.vifc_threshold = min_ttl_threshold;
vc.vifc_rate_limit = max_rate_limit; vc.vifc_rate_limit = 0;
memcpy(&vc.vifc_lcl_addr, &vif_local_address, sizeof(vc.vifc_lcl_addr)); memcpy(&vc.vifc_lcl_addr, &vif_local_address, sizeof(vc.vifc_lcl_addr));
if (vc.vifc_flags & VIFF_TUNNEL)
memcpy(&vc.vifc_rmt_addr, &vif_remote_address,
sizeof(vc.vifc_rmt_addr));
setsockopt(mrouter_s4, IPPROTO_IP, MRT_ADD_VIF, (void *)&vc, setsockopt(mrouter_s4, IPPROTO_IP, MRT_ADD_VIF, (void *)&vc,
sizeof(vc)); sizeof(vc));
.Ed .Ed
@ -179,15 +176,32 @@ contains the
flags as defined in flags as defined in
.In netinet/ip_mroute.h . .In netinet/ip_mroute.h .
The The
.Dv VIFF_TUNNEL
flag is no longer supported by
.Fx .
Users who wish to forward multicast datagrams over a tunnel should consider
configuring a
.Xr gif 4
or
.Xr gre 4
tunnel and using it as a physical interface.
.Pp
The
.Va min_ttl_threshold .Va min_ttl_threshold
contains the minimum TTL a multicast data packet must have to be contains the minimum TTL a multicast data packet must have to be
forwarded on that vif. forwarded on that vif.
Typically, it would have value of 1. Typically, it would have value of 1.
.Pp
The The
.Va max_rate_limit .Va max_rate_limit
contains the maximum rate (in bits/s) of the multicast data packets forwarded argument is no longer supported in
on that vif. .Fx
Value of 0 means no limit. and should be set to 0.
Users who wish to rate-limit multicast datagrams should consider the use of
.Xr dummynet 4
or
.Xr altq 4 .
.Pp
The The
.Va vif_local_address .Va vif_local_address
contains the local IP address of the corresponding local interface. contains the local IP address of the corresponding local interface.
@ -930,7 +944,11 @@ signal, but the next upcall will be triggered no earlier than
after the previous upcall. after the previous upcall.
.\" .\"
.Sh SEE ALSO .Sh SEE ALSO
.Xr altq 4 ,
.Xr dummynet 4 ,
.Xr getsockopt 2 , .Xr getsockopt 2 ,
.Xr gif 4 ,
.Xr gre 4 ,
.Xr recvfrom 2 , .Xr recvfrom 2 ,
.Xr recvmsg 2 , .Xr recvmsg 2 ,
.Xr setsockopt 2 , .Xr setsockopt 2 ,