1*af873fceSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2b482cd20SSjur Braendeland /*
3b482cd20SSjur Braendeland * Copyright (C) ST-Ericsson AB 2010
426ee65e6Ssjur.brandeland@stericsson.com * Author: Sjur Brendeland
5b482cd20SSjur Braendeland */
6b482cd20SSjur Braendeland
7b31fa5baSJoe Perches #define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
8b31fa5baSJoe Perches
9b482cd20SSjur Braendeland #include <linux/stddef.h>
10b482cd20SSjur Braendeland #include <linux/slab.h>
11b482cd20SSjur Braendeland #include <net/caif/caif_layer.h>
12b482cd20SSjur Braendeland #include <net/caif/cfsrvl.h>
13b482cd20SSjur Braendeland #include <net/caif/cfpkt.h>
14b482cd20SSjur Braendeland
15f2527ec4SAndré Carvalho de Matos #define container_obj(layr) ((struct cfsrvl *) layr)
16f2527ec4SAndré Carvalho de Matos
17b482cd20SSjur Braendeland static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt);
18b482cd20SSjur Braendeland static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt);
19b482cd20SSjur Braendeland
cfdbgl_create(u8 channel_id,struct dev_info * dev_info)20b482cd20SSjur Braendeland struct cflayer *cfdbgl_create(u8 channel_id, struct dev_info *dev_info)
21b482cd20SSjur Braendeland {
227ac2ed0cSJoe Perches struct cfsrvl *dbg = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
237ac2ed0cSJoe Perches if (!dbg)
24b482cd20SSjur Braendeland return NULL;
25b482cd20SSjur Braendeland caif_assert(offsetof(struct cfsrvl, layer) == 0);
26b1c74247SSjur Braendeland cfsrvl_init(dbg, channel_id, dev_info, false);
27b482cd20SSjur Braendeland dbg->layer.receive = cfdbgl_receive;
28b482cd20SSjur Braendeland dbg->layer.transmit = cfdbgl_transmit;
2934dcf6a1Sswkhack snprintf(dbg->layer.name, CAIF_LAYER_NAME_SZ, "dbg%d", channel_id);
30b482cd20SSjur Braendeland return &dbg->layer;
31b482cd20SSjur Braendeland }
32b482cd20SSjur Braendeland
cfdbgl_receive(struct cflayer * layr,struct cfpkt * pkt)33b482cd20SSjur Braendeland static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt)
34b482cd20SSjur Braendeland {
35b482cd20SSjur Braendeland return layr->up->receive(layr->up, pkt);
36b482cd20SSjur Braendeland }
37b482cd20SSjur Braendeland
cfdbgl_transmit(struct cflayer * layr,struct cfpkt * pkt)38b482cd20SSjur Braendeland static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt)
39b482cd20SSjur Braendeland {
40f2527ec4SAndré Carvalho de Matos struct cfsrvl *service = container_obj(layr);
41f2527ec4SAndré Carvalho de Matos struct caif_payload_info *info;
42f2527ec4SAndré Carvalho de Matos int ret;
43f2527ec4SAndré Carvalho de Matos
44374458b3SDmitry Tarnyagin if (!cfsrvl_ready(service, &ret)) {
45374458b3SDmitry Tarnyagin cfpkt_destroy(pkt);
46f2527ec4SAndré Carvalho de Matos return ret;
47374458b3SDmitry Tarnyagin }
48f2527ec4SAndré Carvalho de Matos
49f2527ec4SAndré Carvalho de Matos /* Add info for MUX-layer to route the packet out */
50f2527ec4SAndré Carvalho de Matos info = cfpkt_info(pkt);
51f2527ec4SAndré Carvalho de Matos info->channel_id = service->layer.id;
52f2527ec4SAndré Carvalho de Matos info->dev_info = &service->dev_info;
53f2527ec4SAndré Carvalho de Matos
54b482cd20SSjur Braendeland return layr->dn->transmit(layr->dn, pkt);
55b482cd20SSjur Braendeland }
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