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 #define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__
   8
   9 #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
  15 static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt);
  16 static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt);
  17
  18 struct cflayer *cfdbgl_create(u8 channel_id, struct dev_info *dev_info)
  19 {
  20         struct cfsrvl *dbg = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
  21         if (!dbg) {
  22                 pr_warn("Out of memory\n");
  23                 return NULL;
  24         }
  25         caif_assert(offsetof(struct cfsrvl, layer) == 0);
  26         memset(dbg, 0, sizeof(struct cfsrvl));
  27         cfsrvl_init(dbg, channel_id, dev_info, false);
  28         dbg->layer.receive = cfdbgl_receive;
  29         dbg->layer.transmit = cfdbgl_transmit;
  30         snprintf(dbg->layer.name, CAIF_LAYER_NAME_SZ - 1, "dbg%d", channel_id);
  31         return &dbg->layer;
  32 }
  33
  34 static int cfdbgl_receive(struct cflayer *layr, struct cfpkt *pkt)
  35 {
  36         return layr->up->receive(layr->up, pkt);
  37 }
  38
  39 static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt)
  40 {
  41         return layr->dn->transmit(layr->dn, pkt);
  42 }