linux/net/caif/cfvidl.c
Thomas Gleixner af873fcece treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194
Based on 1 normalized pattern(s):

  license terms gnu general public license gpl version 2

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 161 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528170027.447718015@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:29:22 -07:00

66 lines
1.7 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) ST-Ericsson AB 2010
* Author: Sjur Brendeland
*/
#define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <net/caif/caif_layer.h>
#include <net/caif/cfsrvl.h>
#include <net/caif/cfpkt.h>
#define container_obj(layr) ((struct cfsrvl *) layr)
static int cfvidl_receive(struct cflayer *layr, struct cfpkt *pkt);
static int cfvidl_transmit(struct cflayer *layr, struct cfpkt *pkt);
struct cflayer *cfvidl_create(u8 channel_id, struct dev_info *dev_info)
{
struct cfsrvl *vid = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
if (!vid)
return NULL;
caif_assert(offsetof(struct cfsrvl, layer) == 0);
cfsrvl_init(vid, channel_id, dev_info, false);
vid->layer.receive = cfvidl_receive;
vid->layer.transmit = cfvidl_transmit;
snprintf(vid->layer.name, CAIF_LAYER_NAME_SZ, "vid1");
return &vid->layer;
}
static int cfvidl_receive(struct cflayer *layr, struct cfpkt *pkt)
{
u32 videoheader;
if (cfpkt_extr_head(pkt, &videoheader, 4) < 0) {
pr_err("Packet is erroneous!\n");
cfpkt_destroy(pkt);
return -EPROTO;
}
return layr->up->receive(layr->up, pkt);
}
static int cfvidl_transmit(struct cflayer *layr, struct cfpkt *pkt)
{
struct cfsrvl *service = container_obj(layr);
struct caif_payload_info *info;
u32 videoheader = 0;
int ret;
if (!cfsrvl_ready(service, &ret)) {
cfpkt_destroy(pkt);
return ret;
}
cfpkt_add_head(pkt, &videoheader, 4);
/* Add info for MUX-layer to route the packet out */
info = cfpkt_info(pkt);
info->channel_id = service->layer.id;
info->dev_info = &service->dev_info;
return layr->dn->transmit(layr->dn, pkt);
}