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b482cd20 SB |
1 | /* |
2 | * Copyright (C) ST-Ericsson AB 2010 | |
26ee65e6 | 3 | * Author: Sjur Brendeland |
b482cd20 SB |
4 | * License terms: GNU General Public License (GPL) version 2 |
5 | */ | |
6 | ||
b31fa5ba JP |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__ |
8 | ||
b482cd20 SB |
9 | #include <linux/stddef.h> |
10 | #include <linux/slab.h> | |
11 | #include <net/caif/caif_layer.h> | |
12 | #include <net/caif/cfsrvl.h> | |
13 | #include <net/caif/cfpkt.h> | |
14 | ||
f2527ec4 ACM |
15 | #define container_obj(layr) ((struct cfsrvl *) layr) |
16 | ||
b482cd20 SB |
17 | static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt); |
18 | static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt); | |
19 | ||
20 | struct cflayer *cfdbgl_create(u8 channel_id, struct dev_info *dev_info) | |
21 | { | |
7ac2ed0c JP |
22 | struct cfsrvl *dbg = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC); |
23 | if (!dbg) | |
b482cd20 | 24 | return NULL; |
b482cd20 | 25 | caif_assert(offsetof(struct cfsrvl, layer) == 0); |
b1c74247 | 26 | cfsrvl_init(dbg, channel_id, dev_info, false); |
b482cd20 SB |
27 | dbg->layer.receive = cfdbgl_receive; |
28 | dbg->layer.transmit = cfdbgl_transmit; | |
29 | snprintf(dbg->layer.name, CAIF_LAYER_NAME_SZ - 1, "dbg%d", channel_id); | |
30 | return &dbg->layer; | |
31 | } | |
32 | ||
33 | static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt) | |
34 | { | |
35 | return layr->up->receive(layr->up, pkt); | |
36 | } | |
37 | ||
38 | static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt) | |
39 | { | |
f2527ec4 ACM |
40 | struct cfsrvl *service = container_obj(layr); |
41 | struct caif_payload_info *info; | |
42 | int ret; | |
43 | ||
374458b3 DT |
44 | if (!cfsrvl_ready(service, &ret)) { |
45 | cfpkt_destroy(pkt); | |
f2527ec4 | 46 | return ret; |
374458b3 | 47 | } |
f2527ec4 ACM |
48 | |
49 | /* Add info for MUX-layer to route the packet out */ | |
50 | info = cfpkt_info(pkt); | |
51 | info->channel_id = service->layer.id; | |
52 | info->dev_info = &service->dev_info; | |
53 | ||
b482cd20 SB |
54 | return layr->dn->transmit(layr->dn, pkt); |
55 | } |