Hello Radek, On Wed, Mar 20, 2013 at 5:40 PM, Radek Pazdera <rpazdera@xxxxxxxxxx> wrote: > This commit adds documentation for the IP_MULTICAST_ALL socket option. > > The option was added to the Linux kernel in 2.6.31: > > Author Nivedita Singhvi <niv@xxxxxxxxxx> > Commit f771bef98004d9d141b085d987a77d06669d4f4f > > The description is based on a previous one [3] posted by the original > author of the code -- Nivedita, but it is slightly re-worded. > > I tested it myself and it works as described. > > References: > [1] http://lxr.free-electrons.com/source/net/ipv4/ip_sockglue.c#L972 > [2] http://lxr.free-electrons.com/source/net/ipv4/igmp.c#L2267 > [3] http://patchwork.ozlabs.org/patch/28902/ > > Signed-off-by: Radek Pazdera <rpazdera@xxxxxxxxxx> Thanks for the detailed commit message! Applied. Cheers, Michael > --- > man7/ip.7 | 14 +++++++++++--- > 1 files changed, 11 insertions(+), 3 deletions(-) > > diff --git a/man7/ip.7 b/man7/ip.7 > index 9bef3bf..cc8eea6 100644 > --- a/man7/ip.7 > +++ b/man7/ip.7 > @@ -29,9 +29,6 @@ > .\" MCAST_JOIN_SOURCE_GROUP (2.4.22 / 2.6) > .\" MCAST_LEAVE_SOURCE_GROUP (2.4.22 / 2.6) > .\" MCAST_MSFILTER (2.4.22 / 2.6) > -.\" IP_MULTICAST_ALL (2.6.31) > -.\" commit f771bef98004d9d141b085d987a77d06669d4f4f > -.\" Author: Nivedita Singhvi <niv@xxxxxxxxxx> > .\" IP_UNICAST_IF (3.4) > .\" commit 76e21053b5bf33a07c76f99d27a74238310e3c71 > .\" Author: Erich E. Hoover <ehoover@xxxxxxxxx> > @@ -525,6 +522,17 @@ This is also particularly useful for diagnostic tools such as > that wish to deliberately send probe packets larger than > the observed Path MTU. > .TP > +.BR IP_MULTICAST_ALL " (since Linux 2.6.31)" > +This option can be used to modify the delivery policy of multicast messages > +to sockets bound to the wildcard > +.B INADDR_ANY > +address. The argument is a boolean integer (defaults to 1). If set to 1, > +the socket will receive messages from all the groups that have been joined > +globally on the whole system. Otherwise, it will deliver only messages from > +the groups that have been explicitly joined (for example via the > +.B IP_ADD_MEMBERSHIP > +option) on this particular socket. > +.TP > .BR IP_MULTICAST_IF " (since Linux 1.2)" > Set the local device for a multicast socket. > Argument is an > -- > 1.7.7.6 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-man" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Author of "The Linux Programming Interface"; http://man7.org/tlpi/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
