I'm working on extending netlink to work with an arbitary number
of groups and stumbled over this in the w1 driver:
dev->groups = 23
NETLINK_CB(skb).dst_group = dev->groups;
netlink_broadcast(dev->nls, skb, 0, dev->groups, GFP_ATOMIC);
Apparently it wants to send to multiple groups at once, is that correct?
Why does it need to do so? One limitation introduced by my patches will
be that broadcasting to multiple groups won't be possible anymore and
this is the only code in the kernel that uses this feature of netlink.
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