linux-kernel - Re: New Address Family: Inter Process Networking (IPN)

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Message-ID:  <873aufkste.fsf@blp.benpfaff.org>
Date:	Thu, 06 Dec 2007 20:54:53 -0800
From:	Ben Pfaff <blp@...stanford.edu>
To:	linux-kernel@...r.kernel.org
Subject:  Re: New Address Family: Inter Process Networking (IPN)

"Chris Friesen" <cfriesen@...tel.com> writes:

> David Miller wrote:
>> From: "Chris Friesen" <cfriesen@...tel.com>
>>> One problem we ran into was that there are only 32 multicast groups
>>> per netlink protocol family.
>> I'm pretty sure we've removed this limitation.
> As of 2.6.23 nl_groups is a 32-bit bitmask with one bit per
> group. 

Use setsockopt(fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, ...) to
join an arbitrary Netlink multicast group.
-- 
"A computer is a state machine.
 Threads are for people who cant [sic] program state machines."
--Alan Cox

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