Hi, All !
int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, u32 pid,
u32 group, int allocation);
What does the pid mean? Someone said that it is the pid of the receiver.
For example, Kevin He said it delivers a netlink message to both the
process specified by pid and the multicast groups specified by group
(http://www.linuxjournal.com/article/7356.)
But, in function do_one_broadcast() which is called in netlink_broadcast(),
there are some sentences like this:
744 struct netlink_opt *nlk = nlk_sk(sk);
750 if (nlk->pid == p->pid || !(nlk->groups & p->group))
751 goto out;
where p is a variable constructed from parameters of netlink_broadcast().
I think these sentences mean that the parameter pid of netlink_broadcast()
is the sender's pid?
Am I right?
Thanks !
Regard,
Cheng
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