net/caif/cfdbgl.c

   1 /*
   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
   7 #include <linux/stddef.h>
   8 #include <linux/slab.h>
   9 #include <net/caif/caif_layer.h>
  10 #include <net/caif/cfsrvl.h>
  11 #include <net/caif/cfpkt.h>
  12
  13 static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt);
  14 static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt);
  15
  16 struct cflayer *cfdbgl_create(u8 channel_id, struct dev_info *dev_info)
  17 {
  18         struct cfsrvl *dbg = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
  19         if (!dbg) {
  20                 pr_warning("CAIF: %s(): Out of memory\n", __func__);
  21                 return NULL;
  22         }
  23         caif_assert(offsetof(struct cfsrvl, layer) == 0);
  24         memset(dbg, 0, sizeof(struct cfsrvl));
  25         cfsrvl_init(dbg, channel_id, dev_info);
  26         dbg->layer.receive = cfdbgl_receive;
  27         dbg->layer.transmit = cfdbgl_transmit;
  28         snprintf(dbg->layer.name, CAIF_LAYER_NAME_SZ - 1, "dbg%d", channel_id);
  29         return &dbg->layer;
  30 }
  31
  32 static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt)
  33 {
  34         return layr->up->receive(layr->up, pkt);
  35 }
  36
  37 static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt)
  38 {
  39         return layr->dn->transmit(layr->dn, pkt);
  40 }