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Sjur Braendelandb482cd22010-03-30 13:56:23 +00001/*
2 * Copyright (C) ST-Ericsson AB 2010
3 * Author: Sjur Brendeland/sjur.brandeland@stericsson.com
4 * License terms: GNU General Public License (GPL) version 2
5 */
6
Joe Perchesb31fa5b2010-09-05 21:31:11 +00007#define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
8
Sjur Braendelandb482cd22010-03-30 13:56:23 +00009#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
André Carvalho de Matosf2527ec2010-11-01 11:52:47 +000015#define container_obj(layr) ((struct cfsrvl *) layr)
16
Sjur Braendelandb482cd22010-03-30 13:56:23 +000017static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt);
18static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt);
19
20struct cflayer *cfdbgl_create(u8 channel_id, struct dev_info *dev_info)
21{
Joe Perches7ac2ed02011-08-25 13:22:24 +000022 struct cfsrvl *dbg = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
23 if (!dbg)
Sjur Braendelandb482cd22010-03-30 13:56:23 +000024 return NULL;
Sjur Braendelandb482cd22010-03-30 13:56:23 +000025 caif_assert(offsetof(struct cfsrvl, layer) == 0);
Sjur Braendelandb1c74242010-06-17 06:55:38 +000026 cfsrvl_init(dbg, channel_id, dev_info, false);
Sjur Braendelandb482cd22010-03-30 13:56:23 +000027 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
33static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt)
34{
35 return layr->up->receive(layr->up, pkt);
36}
37
38static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt)
39{
André Carvalho de Matosf2527ec2010-11-01 11:52:47 +000040 struct cfsrvl *service = container_obj(layr);
41 struct caif_payload_info *info;
42 int ret;
43
Dmitry Tarnyagin374458b2012-03-11 10:28:31 +000044 if (!cfsrvl_ready(service, &ret)) {
45 cfpkt_destroy(pkt);
André Carvalho de Matosf2527ec2010-11-01 11:52:47 +000046 return ret;
Dmitry Tarnyagin374458b2012-03-11 10:28:31 +000047 }
André Carvalho de Matosf2527ec2010-11-01 11:52:47 +000048
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
Sjur Braendelandb482cd22010-03-30 13:56:23 +000054 return layr->dn->transmit(layr->dn, pkt);
55}