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[PATCH] WE-21 support (core API)

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This is version 21 of the Wireless Extensions. Changelog :
	o finishes migrating the ESSID API (remove the +1)
	o netdev->get_wireless_stats is no more
	o long/short retry

This is a redacted version of a patch originally submitted by Jean
Tourrilhes.  I removed most of the additions, in order to minimize
future support requirements for nl80211 (or other WE successor).

CC: Jean Tourrilhes <jt@hpl.hp.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville
2006-09-08 16:04:05 -04:00
parent 7c250413e5
commit baef186519
4 changed files with 62 additions and 35 deletions
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67
net/core/wireless.c
View File

@ -68,6 +68,14 @@
*
* v8 - 17.02.06 - Jean II
* o RtNetlink requests support (SET/GET)
*
* v8b - 03.08.06 - Herbert Xu
* o Fix Wireless Event locking issues.
*
* v9 - 14.3.06 - Jean II
* o Change length in ESSID and NICK to strlen() instead of strlen()+1
* o Make standard_ioctl_num and standard_event_num unsigned
* o Remove (struct net_device *)->get_wireless_stats()
*/
/***************************** INCLUDES *****************************/
@ -234,24 +242,24 @@ static const struct iw_ioctl_description standard_ioctl[] = {
[SIOCSIWESSID - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = IW_ESSID_MAX_SIZE + 1,
.max_tokens = IW_ESSID_MAX_SIZE,
.flags = IW_DESCR_FLAG_EVENT,
},
[SIOCGIWESSID - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = IW_ESSID_MAX_SIZE + 1,
.max_tokens = IW_ESSID_MAX_SIZE,
.flags = IW_DESCR_FLAG_DUMP,
},
[SIOCSIWNICKN - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = IW_ESSID_MAX_SIZE + 1,
.max_tokens = IW_ESSID_MAX_SIZE,
},
[SIOCGIWNICKN - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_POINT,
.token_size = 1,
.max_tokens = IW_ESSID_MAX_SIZE + 1,
.max_tokens = IW_ESSID_MAX_SIZE,
},
[SIOCSIWRATE - SIOCIWFIRST] = {
.header_type = IW_HEADER_TYPE_PARAM,
@ -338,8 +346,8 @@ static const struct iw_ioctl_description standard_ioctl[] = {
.max_tokens = sizeof(struct iw_pmksa),
},
};
static const int standard_ioctl_num = (sizeof(standard_ioctl) /
sizeof(struct iw_ioctl_description));
static const unsigned standard_ioctl_num = (sizeof(standard_ioctl) /
sizeof(struct iw_ioctl_description));
/*
* Meta-data about all the additional standard Wireless Extension events
@ -389,8 +397,8 @@ static const struct iw_ioctl_description standard_event[] = {
.max_tokens = sizeof(struct iw_pmkid_cand),
},
};
static const int standard_event_num = (sizeof(standard_event) /
sizeof(struct iw_ioctl_description));
static const unsigned standard_event_num = (sizeof(standard_event) /
sizeof(struct iw_ioctl_description));
/* Size (in bytes) of the various private data types */
static const char iw_priv_type_size[] = {
@ -465,17 +473,6 @@ static inline struct iw_statistics *get_wireless_stats(struct net_device *dev)
(dev->wireless_handlers->get_wireless_stats != NULL))
return dev->wireless_handlers->get_wireless_stats(dev);
/* Old location, field to be removed in next WE */
if(dev->get_wireless_stats) {
static int printed_message;
if (!printed_message++)
printk(KERN_DEBUG "%s (WE) : Driver using old /proc/net/wireless support, please fix driver !\n",
dev->name);
return dev->get_wireless_stats(dev);
}
/* Not found */
return (struct iw_statistics *) NULL;
}
@ -1843,8 +1840,33 @@ int wireless_rtnetlink_set(struct net_device * dev,
*/
#ifdef WE_EVENT_RTNETLINK
/* ---------------------------------------------------------------- */
/*
* Locking...
* ----------
*
* Thanks to Herbert Xu <herbert@gondor.apana.org.au> for fixing
* the locking issue in here and implementing this code !
*
* The issue : wireless_send_event() is often called in interrupt context,
* while the Netlink layer can never be called in interrupt context.
* The fully formed RtNetlink events are queued, and then a tasklet is run
* to feed those to Netlink.
* The skb_queue is interrupt safe, and its lock is not held while calling
* Netlink, so there is no possibility of dealock.
* Jean II
*/
static struct sk_buff_head wireless_nlevent_queue;
static int __init wireless_nlevent_init(void)
{
skb_queue_head_init(&wireless_nlevent_queue);
return 0;
}
subsys_initcall(wireless_nlevent_init);
static void wireless_nlevent_process(unsigned long data)
{
struct sk_buff *skb;
@ -1921,13 +1943,6 @@ static inline void rtmsg_iwinfo(struct net_device * dev,
tasklet_schedule(&wireless_nlevent_tasklet);
}
static int __init wireless_nlevent_init(void)
{
skb_queue_head_init(&wireless_nlevent_queue);
return 0;
}
subsys_initcall(wireless_nlevent_init);
#endif /* WE_EVENT_RTNETLINK */
/* ---------------------------------------------------------------- */