1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) ST-Ericsson AB 2010
4*4882a593Smuzhiyun * Author: Sjur Brendeland
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/stddef.h>
10*4882a593Smuzhiyun #include <linux/slab.h>
11*4882a593Smuzhiyun #include <net/caif/caif_layer.h>
12*4882a593Smuzhiyun #include <net/caif/cfsrvl.h>
13*4882a593Smuzhiyun #include <net/caif/cfpkt.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #define container_obj(layr) ((struct cfsrvl *) layr)
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt);
18*4882a593Smuzhiyun static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt);
19*4882a593Smuzhiyun
cfdbgl_create(u8 channel_id,struct dev_info * dev_info)20*4882a593Smuzhiyun struct cflayer *cfdbgl_create(u8 channel_id, struct dev_info *dev_info)
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun struct cfsrvl *dbg = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
23*4882a593Smuzhiyun if (!dbg)
24*4882a593Smuzhiyun return NULL;
25*4882a593Smuzhiyun caif_assert(offsetof(struct cfsrvl, layer) == 0);
26*4882a593Smuzhiyun cfsrvl_init(dbg, channel_id, dev_info, false);
27*4882a593Smuzhiyun dbg->layer.receive = cfdbgl_receive;
28*4882a593Smuzhiyun dbg->layer.transmit = cfdbgl_transmit;
29*4882a593Smuzhiyun snprintf(dbg->layer.name, CAIF_LAYER_NAME_SZ, "dbg%d", channel_id);
30*4882a593Smuzhiyun return &dbg->layer;
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun
cfdbgl_receive(struct cflayer * layr,struct cfpkt * pkt)33*4882a593Smuzhiyun static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun return layr->up->receive(layr->up, pkt);
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
cfdbgl_transmit(struct cflayer * layr,struct cfpkt * pkt)38*4882a593Smuzhiyun static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun struct cfsrvl *service = container_obj(layr);
41*4882a593Smuzhiyun struct caif_payload_info *info;
42*4882a593Smuzhiyun int ret;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun if (!cfsrvl_ready(service, &ret)) {
45*4882a593Smuzhiyun cfpkt_destroy(pkt);
46*4882a593Smuzhiyun return ret;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun /* Add info for MUX-layer to route the packet out */
50*4882a593Smuzhiyun info = cfpkt_info(pkt);
51*4882a593Smuzhiyun info->channel_id = service->layer.id;
52*4882a593Smuzhiyun info->dev_info = &service->dev_info;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun return layr->dn->transmit(layr->dn, pkt);
55*4882a593Smuzhiyun }
56