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[PATCH] WE-21 support (core API)
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>
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@ -334,7 +334,6 @@ struct net_device
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struct net_device_stats* (*get_stats)(struct net_device *dev);
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struct iw_statistics* (*get_wireless_stats)(struct net_device *dev);
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/* List of functions to handle Wireless Extensions (instead of ioctl).
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* See <net/iw_handler.h> for details. Jean II */
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@ -1,7 +1,7 @@
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/*
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* This file define a set of standard wireless extensions
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*
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* Version : 20 17.2.06
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* Version : 21 14.3.06
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*
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* Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com>
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* Copyright (c) 1997-2006 Jean Tourrilhes, All Rights Reserved.
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@ -69,9 +69,14 @@
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/***************************** INCLUDES *****************************/
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/* This header is used in user-space, therefore need to be sanitised
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* for that purpose. Those includes are usually not compatible with glibc.
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* To know which includes to use in user-space, check iwlib.h. */
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#ifdef __KERNEL__
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#include <linux/types.h> /* for "caddr_t" et al */
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#include <linux/socket.h> /* for "struct sockaddr" et al */
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#include <linux/if.h> /* for IFNAMSIZ and co... */
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#endif /* __KERNEL__ */
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/***************************** VERSION *****************************/
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/*
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@ -80,7 +85,7 @@
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* (there is some stuff that will be added in the future...)
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* I just plan to increment with each new version.
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*/
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#define WIRELESS_EXT 20
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#define WIRELESS_EXT 21
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/*
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* Changes :
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@ -208,6 +213,14 @@
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* V19 to V20
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* ----------
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* - RtNetlink requests support (SET/GET)
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*
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* V20 to V21
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* ----------
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* - Remove (struct net_device *)->get_wireless_stats()
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* - Change length in ESSID and NICK to strlen() instead of strlen()+1
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* - Add IW_RETRY_SHORT/IW_RETRY_LONG retry modifiers
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* - Power/Retry relative values no longer * 100000
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* - Add explicit flag to tell stats are in 802.11k RCPI : IW_QUAL_RCPI
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*/
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/**************************** CONSTANTS ****************************/
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@ -448,6 +461,7 @@
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#define IW_QUAL_QUAL_INVALID 0x10 /* Driver doesn't provide value */
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#define IW_QUAL_LEVEL_INVALID 0x20
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#define IW_QUAL_NOISE_INVALID 0x40
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#define IW_QUAL_RCPI 0x80 /* Level + Noise are 802.11k RCPI */
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#define IW_QUAL_ALL_INVALID 0x70
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/* Frequency flags */
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@ -500,10 +514,12 @@
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#define IW_RETRY_TYPE 0xF000 /* Type of parameter */
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#define IW_RETRY_LIMIT 0x1000 /* Maximum number of retries*/
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#define IW_RETRY_LIFETIME 0x2000 /* Maximum duration of retries in us */
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#define IW_RETRY_MODIFIER 0x000F /* Modify a parameter */
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#define IW_RETRY_MODIFIER 0x00FF /* Modify a parameter */
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#define IW_RETRY_MIN 0x0001 /* Value is a minimum */
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#define IW_RETRY_MAX 0x0002 /* Value is a maximum */
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#define IW_RETRY_RELATIVE 0x0004 /* Value is not in seconds/ms/us */
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#define IW_RETRY_SHORT 0x0010 /* Value is for short packets */
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#define IW_RETRY_LONG 0x0020 /* Value is for long packets */
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/* Scanning request flags */
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#define IW_SCAN_DEFAULT 0x0000 /* Default scan of the driver */
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@ -1017,7 +1033,7 @@ struct iw_range
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/* Note : this frequency list doesn't need to fit channel numbers,
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* because each entry contain its channel index */
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__u32 enc_capa; /* IW_ENC_CAPA_* bit field */
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__u32 enc_capa; /* IW_ENC_CAPA_* bit field */
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};
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/*
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@ -344,8 +344,6 @@ static ssize_t wireless_show(struct class_device *cd, char *buf,
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if(dev->wireless_handlers &&
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dev->wireless_handlers->get_wireless_stats)
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iw = dev->wireless_handlers->get_wireless_stats(dev);
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else if (dev->get_wireless_stats)
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iw = dev->get_wireless_stats(dev);
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if (iw != NULL)
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ret = (*format)(iw, buf);
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}
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@ -465,8 +463,7 @@ int netdev_register_sysfs(struct net_device *net)
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*groups++ = &netstat_group;
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#ifdef WIRELESS_EXT
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if (net->get_wireless_stats
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|| (net->wireless_handlers && net->wireless_handlers->get_wireless_stats))
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if (net->wireless_handlers && net->wireless_handlers->get_wireless_stats)
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*groups++ = &wireless_group;
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#endif
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@ -68,6 +68,14 @@
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*
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* v8 - 17.02.06 - Jean II
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* o RtNetlink requests support (SET/GET)
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*
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* v8b - 03.08.06 - Herbert Xu
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* o Fix Wireless Event locking issues.
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*
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* v9 - 14.3.06 - Jean II
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* o Change length in ESSID and NICK to strlen() instead of strlen()+1
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* o Make standard_ioctl_num and standard_event_num unsigned
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* o Remove (struct net_device *)->get_wireless_stats()
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*/
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/***************************** INCLUDES *****************************/
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@ -234,24 +242,24 @@ static const struct iw_ioctl_description standard_ioctl[] = {
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[SIOCSIWESSID - SIOCIWFIRST] = {
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.header_type = IW_HEADER_TYPE_POINT,
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.token_size = 1,
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.max_tokens = IW_ESSID_MAX_SIZE + 1,
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.max_tokens = IW_ESSID_MAX_SIZE,
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.flags = IW_DESCR_FLAG_EVENT,
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},
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[SIOCGIWESSID - SIOCIWFIRST] = {
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.header_type = IW_HEADER_TYPE_POINT,
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.token_size = 1,
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.max_tokens = IW_ESSID_MAX_SIZE + 1,
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.max_tokens = IW_ESSID_MAX_SIZE,
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.flags = IW_DESCR_FLAG_DUMP,
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},
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[SIOCSIWNICKN - SIOCIWFIRST] = {
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.header_type = IW_HEADER_TYPE_POINT,
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.token_size = 1,
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.max_tokens = IW_ESSID_MAX_SIZE + 1,
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.max_tokens = IW_ESSID_MAX_SIZE,
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},
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[SIOCGIWNICKN - SIOCIWFIRST] = {
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.header_type = IW_HEADER_TYPE_POINT,
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.token_size = 1,
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.max_tokens = IW_ESSID_MAX_SIZE + 1,
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.max_tokens = IW_ESSID_MAX_SIZE,
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},
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[SIOCSIWRATE - SIOCIWFIRST] = {
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.header_type = IW_HEADER_TYPE_PARAM,
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@ -338,8 +346,8 @@ static const struct iw_ioctl_description standard_ioctl[] = {
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.max_tokens = sizeof(struct iw_pmksa),
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},
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};
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static const int standard_ioctl_num = (sizeof(standard_ioctl) /
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sizeof(struct iw_ioctl_description));
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static const unsigned standard_ioctl_num = (sizeof(standard_ioctl) /
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sizeof(struct iw_ioctl_description));
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/*
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* Meta-data about all the additional standard Wireless Extension events
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@ -389,8 +397,8 @@ static const struct iw_ioctl_description standard_event[] = {
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.max_tokens = sizeof(struct iw_pmkid_cand),
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},
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};
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static const int standard_event_num = (sizeof(standard_event) /
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sizeof(struct iw_ioctl_description));
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static const unsigned standard_event_num = (sizeof(standard_event) /
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sizeof(struct iw_ioctl_description));
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/* Size (in bytes) of the various private data types */
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static const char iw_priv_type_size[] = {
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@ -465,17 +473,6 @@ static inline struct iw_statistics *get_wireless_stats(struct net_device *dev)
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(dev->wireless_handlers->get_wireless_stats != NULL))
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return dev->wireless_handlers->get_wireless_stats(dev);
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/* Old location, field to be removed in next WE */
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if(dev->get_wireless_stats) {
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static int printed_message;
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if (!printed_message++)
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printk(KERN_DEBUG "%s (WE) : Driver using old /proc/net/wireless support, please fix driver !\n",
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dev->name);
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return dev->get_wireless_stats(dev);
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}
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/* Not found */
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return (struct iw_statistics *) NULL;
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}
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@ -1843,8 +1840,33 @@ int wireless_rtnetlink_set(struct net_device * dev,
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*/
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#ifdef WE_EVENT_RTNETLINK
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/* ---------------------------------------------------------------- */
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/*
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* Locking...
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* ----------
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*
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* Thanks to Herbert Xu <herbert@gondor.apana.org.au> for fixing
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* the locking issue in here and implementing this code !
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*
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* The issue : wireless_send_event() is often called in interrupt context,
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* while the Netlink layer can never be called in interrupt context.
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* The fully formed RtNetlink events are queued, and then a tasklet is run
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* to feed those to Netlink.
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* The skb_queue is interrupt safe, and its lock is not held while calling
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* Netlink, so there is no possibility of dealock.
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* Jean II
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*/
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static struct sk_buff_head wireless_nlevent_queue;
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static int __init wireless_nlevent_init(void)
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{
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skb_queue_head_init(&wireless_nlevent_queue);
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return 0;
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}
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subsys_initcall(wireless_nlevent_init);
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static void wireless_nlevent_process(unsigned long data)
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{
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struct sk_buff *skb;
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@ -1921,13 +1943,6 @@ static inline void rtmsg_iwinfo(struct net_device * dev,
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tasklet_schedule(&wireless_nlevent_tasklet);
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}
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static int __init wireless_nlevent_init(void)
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{
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skb_queue_head_init(&wireless_nlevent_queue);
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return 0;
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}
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subsys_initcall(wireless_nlevent_init);
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#endif /* WE_EVENT_RTNETLINK */
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/* ---------------------------------------------------------------- */
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