On Tue, 25 Aug 2015 21:43:29 +0200, Christophe Ricard wrote:
> void netlink_ack(struct sk_buff *in_skb, struct nlmsghdr *nlh, int err)
> {
> + struct netlink_sock *nlk;
> struct sk_buff *skb;
> struct nlmsghdr *rep;
> struct nlmsgerr *errmsg;
> size_t payload = sizeof(*errmsg);
> + struct sock *sk;
>
> - /* error messages get the original request appened */
> - if (err)
> + sk = netlink_lookup(sock_net(in_skb->sk),
> + in_skb->sk->sk_protocol,
> + NETLINK_CB(in_skb).portid);
The necessity to look up the socket for every ack was what I didn't
like about this. Would it be possible to add a socket parameter to
various code paths that lead to netlink_ack (or a boolean, as David
suggested)? It will probably be needed to add it to
netlink_sock->netlink_rcv, netlink_kernel_cfg->input, etc.
As an alternative, David also suggested to attach the sender socket to
in_skb->sk. Could work, too.
Thanks,
Jiri
--
Jiri Benc
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