On Thu, Dec 31, 2015 at 05:34:03PM +0200, Haggai Eran wrote:
> > + sock = sockfd_lookup(fd, &rc);
> > + if (IS_ERR_OR_NULL(sock))
> > + return -EINVAL;
> > +
> > + inetsock = inet_sk(sock->sk);
> > +
> > + neigh = neigh_lookup(&arp_tbl, &inetsock->inet_daddr, dev);
>
> Also, isn't inet_daddr the destination address? But the function claims
> to return the SGID. I guess these can be ambiguous but still it seems
> confusing.
Per description in include/net/inet_sock.h looks like that inet_daddr is
the address of source peer of the socket.
* @inet_daddr - Foreign IPv4 addr
>
>
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