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Holger Freyther holger at freyther.de
> On 07 Oct 2015, at 16:18, Neels Hofmeyr <nhofmeyr at sysmocom.de> wrote:
>
> +/* TODO move this to osmocom/core/linuxlist.h ? */
> +#define __llist_first(head) (((head)->next == (head)) ? NULL : (head)->next)
> +#define llist_first(head, type, entry) llist_entry(__llist_first(head), type, entry)
Why the null check? I mean
struct *foo = llist_first(list);
if (!foo)
return
vs.
if (llist_empty(list))
return;
struct *foo = llist_first(list);
has no difference?
> +int servers_read_cb(struct osmo_fd *servers_ofd, unsigned int what)
> +{
> + unsigned int port_idx = servers_ofd->priv_nr;
> + OSMO_ASSERT(port_idx < GTPH_PORT_N);
> + LOG("reading from servers socket (%s)\n", gtphub_port_idx_names[port_idx]);
> + if (!(what & BSC_FD_READ))
> + return 0;
> +
> + struct gtphub *hub = servers_ofd->data;
> +
> + /* TODO this will not be hardcoded. */
> + struct gtphub_peer *client = llist_first(&hub->to_clients[port_idx].peers,
> + struct gtphub_peer, entry);
interesting that you are the first to use the llist in this way. As you will track
multiple peers the need for a llist_first will vanish?