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caif: Use link layer MTU instead of fixed MTU

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Previously CAIF supported maximum transfer size of ~4050.
The transfer size is now calculated dynamically based on the
link layers mtu size.

Signed-off-by: Sjur Braendeland@stericsson.com
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sjur Braendeland 2010-06-17 06:55:40 +00:00 • committed by David S. Miller
parent a7da1f55a8
commit 2aa40aef9d
15 changed files with 173 additions and 69 deletions
Download patch file Download diff file Expand all files Collapse all files

12
net/caif/caif_dev.c
View file

@ -255,7 +255,7 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
pref = CFPHYPREF_HIGH_BW;
break;
}
dev_hold(dev);
cfcnfg_add_phy_layer(get_caif_conf(),
phy_type,
dev,
@ -285,6 +285,7 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
caifd->layer.up->ctrlcmd(caifd->layer.up,
_CAIF_CTRLCMD_PHYIF_DOWN_IND,
caifd->layer.id);
might_sleep();
res = wait_event_interruptible_timeout(caifd->event,
atomic_read(&caifd->in_use) == 0,
TIMEOUT);
@ -300,6 +301,7 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
"Unregistering an active CAIF device: %s\n",
__func__, dev->name);
cfcnfg_del_phy_layer(get_caif_conf(), &caifd->layer);
dev_put(dev);
atomic_set(&caifd->state, what);
break;
@ -326,7 +328,8 @@ struct cfcnfg *get_caif_conf(void)
EXPORT_SYMBOL(get_caif_conf);
int caif_connect_client(struct caif_connect_request *conn_req,
struct cflayer *client_layer)
struct cflayer *client_layer, int *ifindex,
int *headroom, int *tailroom)
{
struct cfctrl_link_param param;
int ret;
@ -334,8 +337,9 @@ int caif_connect_client(struct caif_connect_request *conn_req,
if (ret)
return ret;
/* Hook up the adaptation layer. */
return cfcnfg_add_adaptation_layer(get_caif_conf(),
&param, client_layer);
return cfcnfg_add_adaptation_layer(get_caif_conf(), &param,
client_layer, ifindex,
headroom, tailroom);
}
EXPORT_SYMBOL(caif_connect_client);