mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 08:14:15 +08:00
34dcf6a190
Because the function snprintf write at most size bytes(including the null byte).So the value of the argument size need not to minus one. Signed-off-by: swkhack <swkhack@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/*
|
|
* Copyright (C) ST-Ericsson AB 2010
|
|
* Author: Sjur Brendeland
|
|
* License terms: GNU General Public License (GPL) version 2
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
|
|
|
|
#include <linux/stddef.h>
|
|
#include <linux/slab.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 cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt);
|
|
static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt);
|
|
|
|
struct cflayer *cfdbgl_create(u8 channel_id, struct dev_info *dev_info)
|
|
{
|
|
struct cfsrvl *dbg = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
|
|
if (!dbg)
|
|
return NULL;
|
|
caif_assert(offsetof(struct cfsrvl, layer) == 0);
|
|
cfsrvl_init(dbg, channel_id, dev_info, false);
|
|
dbg->layer.receive = cfdbgl_receive;
|
|
dbg->layer.transmit = cfdbgl_transmit;
|
|
snprintf(dbg->layer.name, CAIF_LAYER_NAME_SZ, "dbg%d", channel_id);
|
|
return &dbg->layer;
|
|
}
|
|
|
|
static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt)
|
|
{
|
|
return layr->up->receive(layr->up, pkt);
|
|
}
|
|
|
|
static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt)
|
|
{
|
|
struct cfsrvl *service = container_obj(layr);
|
|
struct caif_payload_info *info;
|
|
int ret;
|
|
|
|
if (!cfsrvl_ready(service, &ret)) {
|
|
cfpkt_destroy(pkt);
|
|
return ret;
|
|
}
|
|
|
|
/* 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);
|
|
}
|