diff options
Diffstat (limited to 'net/caif/cfdbgl.c')
| -rw-r--r-- | net/caif/cfdbgl.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/net/caif/cfdbgl.c b/net/caif/cfdbgl.c new file mode 100644 index 00000000..11a2af4c --- /dev/null +++ b/net/caif/cfdbgl.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) ST-Ericsson AB 2010 + * Author: Sjur Brendeland/sjur.brandeland@stericsson.com + * 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 = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC); + if (!dbg) { + pr_warn("Out of memory\n"); + return NULL; + } + caif_assert(offsetof(struct cfsrvl, layer) == 0); + memset(dbg, 0, sizeof(struct cfsrvl)); + 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 - 1, "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)) + 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); +} |