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Message-ID: <20070423183734.GF5883@tuxdriver.com>
Date: Mon, 23 Apr 2007 14:37:34 -0400
From: "John W. Linville" <linville@...driver.com>
To: davem@...emloft.net
Cc: linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
johannes@...solutions.net
Subject: [PATCH] remove wext over netlink
From: Johannes Berg <johannes@...solutions.net>
As scheduled, this patch removes the pointless wext over netlink
code.
Signed-off-by: Johannes Berg <johannes@...solutions.net>
Signed-off-by: John W. Linville <linville@...driver.com>
---
Documentation/feature-removal-schedule.txt | 12 -
include/net/iw_handler.h | 10 -
net/core/rtnetlink.c | 31 --
net/core/wireless.c | 735 ----------------------------
net/wireless/Kconfig | 10 -
5 files changed, 0 insertions(+), 798 deletions(-)
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 9817b60..976c8a1 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -285,18 +285,6 @@ Who: Richard Purdie <rpurdie@...ys.net>
---------------------------
-What: Wireless extensions over netlink (CONFIG_NET_WIRELESS_RTNETLINK)
-When: with the merge of wireless-dev, 2.6.22 or later
-Why: The option/code is
- * not enabled on most kernels
- * not required by any userspace tools (except an experimental one,
- and even there only for some parts, others use ioctl)
- * pointless since wext is no longer evolving and the ioctl
- interface needs to be kept
-Who: Johannes Berg <johannes@...solutions.net>
-
----------------------------
-
What: i8xx_tco watchdog driver
When: in 2.6.22
Why: the i8xx_tco watchdog driver has been replaced by the iTCO_wdt
diff --git a/include/net/iw_handler.h b/include/net/iw_handler.h
index 8a83018..909ca87 100644
--- a/include/net/iw_handler.h
+++ b/include/net/iw_handler.h
@@ -440,16 +440,6 @@ extern int dev_get_wireless_info(char * buffer, char **start, off_t offset,
/* Handle IOCTLs, called in net/core/dev.c */
extern int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd);
-/* Handle RtNetlink requests, called in net/core/rtnetlink.c */
-extern int wireless_rtnetlink_set(struct net_device * dev,
- char * data,
- int len);
-extern int wireless_rtnetlink_get(struct net_device * dev,
- char * data,
- int len,
- char ** p_buf,
- int * p_len);
-
/* Second : functions that may be called by driver modules */
/* Send a single event to user space */
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 75cea8e..4fe0f4b 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -51,10 +51,6 @@
#include <net/pkt_sched.h>
#include <net/fib_rules.h>
#include <net/rtnetlink.h>
-#ifdef CONFIG_NET_WIRELESS_RTNETLINK
-#include <linux/wireless.h>
-#include <net/iw_handler.h>
-#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
struct rtnl_link
{
@@ -684,17 +680,6 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
modified = 1;
}
-#ifdef CONFIG_NET_WIRELESS_RTNETLINK
- if (tb[IFLA_WIRELESS]) {
- /* Call Wireless Extensions.
- * Various stuff checked in there... */
- err = wireless_rtnetlink_set(dev, nla_data(tb[IFLA_WIRELESS]),
- nla_len(tb[IFLA_WIRELESS]));
- if (err < 0)
- goto errout_dev;
- }
-#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
-
if (tb[IFLA_BROADCAST]) {
nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
send_addr_notify = 1;
@@ -758,22 +743,6 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
} else
return -EINVAL;
-
-#ifdef CONFIG_NET_WIRELESS_RTNETLINK
- if (tb[IFLA_WIRELESS]) {
- /* Call Wireless Extensions. We need to know the size before
- * we can alloc. Various stuff checked in there... */
- err = wireless_rtnetlink_get(dev, nla_data(tb[IFLA_WIRELESS]),
- nla_len(tb[IFLA_WIRELESS]),
- &iw_buf, &iw_buf_len);
- if (err < 0)
- goto errout;
-
- /* Payload is at an offset in buffer */
- iw = iw_buf + IW_EV_POINT_OFF;
- }
-#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
-
nskb = nlmsg_new(if_nlmsg_size(iw_buf_len), GFP_KERNEL);
if (nskb == NULL) {
err = -ENOBUFS;
diff --git a/net/core/wireless.c b/net/core/wireless.c
index 86db63d..fba295e 100644
--- a/net/core/wireless.c
+++ b/net/core/wireless.c
@@ -104,12 +104,10 @@
/* Debugging stuff */
#undef WE_IOCTL_DEBUG /* Debug IOCTL API */
-#undef WE_RTNETLINK_DEBUG /* Debug RtNetlink API */
#undef WE_EVENT_DEBUG /* Debug Event dispatcher */
#undef WE_SPY_DEBUG /* Debug enhanced spy support */
/* Options */
-//CONFIG_NET_WIRELESS_RTNETLINK /* Wireless requests over RtNetlink */
#define WE_EVENT_RTNETLINK /* Propagate events using RtNetlink */
#define WE_SET_EVENT /* Generate an event on some set commands */
@@ -1145,739 +1143,6 @@ int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd)
return -EINVAL;
}
-/********************** RTNETLINK REQUEST API **********************/
-/*
- * The alternate user space API to configure all those Wireless Extensions
- * is through RtNetlink.
- * This API support only the new driver API (iw_handler).
- *
- * This RtNetlink API use the same query/reply model as the ioctl API.
- * Maximum effort has been done to fit in the RtNetlink model, and
- * we support both RtNetlink Set and RtNelink Get operations.
- * On the other hand, we don't offer Dump operations because of the
- * following reasons :
- * o Large number of parameters, most optional
- * o Large size of some parameters (> 100 bytes)
- * o Each parameters need to be extracted from hardware
- * o Scan requests can take seconds and disable network activity.
- * Because of this high cost/overhead, we want to return only the
- * parameters the user application is really interested in.
- * We could offer partial Dump using the IW_DESCR_FLAG_DUMP flag.
- *
- * The API uses the standard RtNetlink socket. When the RtNetlink code
- * find a IFLA_WIRELESS field in a RtNetlink SET_LINK request,
- * it calls here.
- */
-
-#ifdef CONFIG_NET_WIRELESS_RTNETLINK
-/* ---------------------------------------------------------------- */
-/*
- * Wrapper to call a standard Wireless Extension GET handler.
- * We do various checks and call the handler with the proper args.
- */
-static int rtnetlink_standard_get(struct net_device * dev,
- struct iw_event * request,
- int request_len,
- iw_handler handler,
- char ** p_buf,
- int * p_len)
-{
- const struct iw_ioctl_description * descr = NULL;
- unsigned int cmd;
- union iwreq_data * wrqu;
- int hdr_len;
- struct iw_request_info info;
- char * buffer = NULL;
- int buffer_size = 0;
- int ret = -EINVAL;
-
- /* Get the description of the Request */
- cmd = request->cmd;
- if ((cmd - SIOCIWFIRST) >= standard_ioctl_num)
- return -EOPNOTSUPP;
- descr = &(standard_ioctl[cmd - SIOCIWFIRST]);
-
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Found standard handler for 0x%04X\n",
- dev->name, cmd);
- printk(KERN_DEBUG "%s (WE.r) : Header type : %d, Token type : %d, size : %d, token : %d\n", dev->name, descr->header_type, descr->token_type, descr->token_size, descr->max_tokens);
-#endif /* WE_RTNETLINK_DEBUG */
-
- /* Check if wrqu is complete */
- hdr_len = event_type_size[descr->header_type];
- if (request_len < hdr_len) {
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG
- "%s (WE.r) : Wireless request too short (%d)\n",
- dev->name, request_len);
-#endif /* WE_RTNETLINK_DEBUG */
- return -EINVAL;
- }
-
- /* Prepare the call */
- info.cmd = cmd;
- info.flags = 0;
-
- /* Check if we have extra data in the reply or not */
- if (descr->header_type != IW_HEADER_TYPE_POINT) {
-
- /* Create the kernel buffer that we will return.
- * It's at an offset to match the TYPE_POINT case... */
- buffer_size = request_len + IW_EV_POINT_OFF;
- buffer = kmalloc(buffer_size, GFP_KERNEL);
- if (buffer == NULL) {
- return -ENOMEM;
- }
- /* Copy event data */
- memcpy(buffer + IW_EV_POINT_OFF, request, request_len);
- /* Use our own copy of wrqu */
- wrqu = (union iwreq_data *) (buffer + IW_EV_POINT_OFF
- + IW_EV_LCP_PK_LEN);
-
- /* No extra arguments. Trivial to handle */
- ret = handler(dev, &info, wrqu, NULL);
-
- } else {
- union iwreq_data wrqu_point;
- char * extra = NULL;
- int extra_size = 0;
-
- /* Get a temp copy of wrqu (skip pointer) */
- memcpy(((char *) &wrqu_point) + IW_EV_POINT_OFF,
- ((char *) request) + IW_EV_LCP_PK_LEN,
- IW_EV_POINT_LEN - IW_EV_LCP_PK_LEN);
-
- /* Calculate space needed by arguments. Always allocate
- * for max space. Easier, and won't last long... */
- extra_size = descr->max_tokens * descr->token_size;
- /* Support for very large requests */
- if ((descr->flags & IW_DESCR_FLAG_NOMAX) &&
- (wrqu_point.data.length > descr->max_tokens))
- extra_size = (wrqu_point.data.length
- * descr->token_size);
- buffer_size = extra_size + IW_EV_POINT_PK_LEN + IW_EV_POINT_OFF;
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Malloc %d bytes (%d bytes)\n",
- dev->name, extra_size, buffer_size);
-#endif /* WE_RTNETLINK_DEBUG */
-
- /* Create the kernel buffer that we will return */
- buffer = kmalloc(buffer_size, GFP_KERNEL);
- if (buffer == NULL) {
- return -ENOMEM;
- }
-
- /* Put wrqu in the right place (just before extra).
- * Leave space for IWE header and dummy pointer...
- * Note that IW_EV_LCP_PK_LEN==4 bytes, so it's still aligned.
- */
- memcpy(buffer + IW_EV_LCP_PK_LEN + IW_EV_POINT_OFF,
- ((char *) &wrqu_point) + IW_EV_POINT_OFF,
- IW_EV_POINT_PK_LEN - IW_EV_LCP_PK_LEN);
- wrqu = (union iwreq_data *) (buffer + IW_EV_LCP_PK_LEN);
-
- /* Extra comes logically after that. Offset +12 bytes. */
- extra = buffer + IW_EV_POINT_OFF + IW_EV_POINT_PK_LEN;
-
- /* Call the handler */
- ret = handler(dev, &info, wrqu, extra);
-
- /* Calculate real returned length */
- extra_size = (wrqu->data.length * descr->token_size);
- /* Re-adjust reply size */
- request->len = extra_size + IW_EV_POINT_PK_LEN;
-
- /* Put the iwe header where it should, i.e. scrap the
- * dummy pointer. */
- memcpy(buffer + IW_EV_POINT_OFF, request, IW_EV_LCP_PK_LEN);
-
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Reply 0x%04X, hdr_len %d, tokens %d, extra_size %d, buffer_size %d\n", dev->name, cmd, hdr_len, wrqu->data.length, extra_size, buffer_size);
-#endif /* WE_RTNETLINK_DEBUG */
-
- /* Check if there is enough buffer up there */
- if (wrqu_point.data.length < wrqu->data.length)
- ret = -E2BIG;
- }
-
- /* Return the buffer to the caller */
- if (!ret) {
- *p_buf = buffer;
- *p_len = request->len;
- } else {
- /* Cleanup */
- if (buffer)
- kfree(buffer);
- }
-
- return ret;
-}
-
-/* ---------------------------------------------------------------- */
-/*
- * Wrapper to call a standard Wireless Extension SET handler.
- * We do various checks and call the handler with the proper args.
- */
-static inline int rtnetlink_standard_set(struct net_device * dev,
- struct iw_event * request,
- int request_len,
- iw_handler handler)
-{
- const struct iw_ioctl_description * descr = NULL;
- unsigned int cmd;
- union iwreq_data * wrqu;
- union iwreq_data wrqu_point;
- int hdr_len;
- char * extra = NULL;
- int extra_size = 0;
- struct iw_request_info info;
- int ret = -EINVAL;
-
- /* Get the description of the Request */
- cmd = request->cmd;
- if ((cmd - SIOCIWFIRST) >= standard_ioctl_num)
- return -EOPNOTSUPP;
- descr = &(standard_ioctl[cmd - SIOCIWFIRST]);
-
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Found standard SET handler for 0x%04X\n",
- dev->name, cmd);
- printk(KERN_DEBUG "%s (WE.r) : Header type : %d, Token type : %d, size : %d, token : %d\n", dev->name, descr->header_type, descr->token_type, descr->token_size, descr->max_tokens);
-#endif /* WE_RTNETLINK_DEBUG */
-
- /* Extract fixed header from request. This is properly aligned. */
- wrqu = (union iwreq_data *) (((char *) request) + IW_EV_LCP_PK_LEN);
-
- /* Check if wrqu is complete */
- hdr_len = event_type_pk_size[descr->header_type];
- if (request_len < hdr_len) {
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG
- "%s (WE.r) : Wireless request too short (%d)\n",
- dev->name, request_len);
-#endif /* WE_RTNETLINK_DEBUG */
- return -EINVAL;
- }
-
- /* Prepare the call */
- info.cmd = cmd;
- info.flags = 0;
-
- /* Check if we have extra data in the request or not */
- if (descr->header_type != IW_HEADER_TYPE_POINT) {
-
- /* No extra arguments. Trivial to handle */
- ret = handler(dev, &info, wrqu, NULL);
-
- } else {
- int extra_len;
-
- /* Put wrqu in the right place (skip pointer) */
- memcpy(((char *) &wrqu_point) + IW_EV_POINT_OFF,
- wrqu, IW_EV_POINT_PK_LEN - IW_EV_LCP_PK_LEN);
- /* Don't forget about the event code... */
- wrqu = &wrqu_point;
-
- /* Check if number of token fits within bounds */
- if (wrqu_point.data.length > descr->max_tokens)
- return -E2BIG;
- if (wrqu_point.data.length < descr->min_tokens)
- return -EINVAL;
-
- /* Real length of payload */
- extra_len = wrqu_point.data.length * descr->token_size;
-
- /* Check if request is self consistent */
- if ((request_len - hdr_len) < extra_len) {
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Wireless request data too short (%d)\n",
- dev->name, extra_size);
-#endif /* WE_RTNETLINK_DEBUG */
- return -EINVAL;
- }
-
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Malloc %d bytes\n",
- dev->name, extra_size);
-#endif /* WE_RTNETLINK_DEBUG */
-
- /* Always allocate for max space. Easier, and won't last
- * long... */
- extra_size = descr->max_tokens * descr->token_size;
- extra = kmalloc(extra_size, GFP_KERNEL);
- if (extra == NULL)
- return -ENOMEM;
-
- /* Copy extra in aligned buffer */
- memcpy(extra, ((char *) request) + hdr_len, extra_len);
-
- /* Call the handler */
- ret = handler(dev, &info, &wrqu_point, extra);
- }
-
-#ifdef WE_SET_EVENT
- /* Generate an event to notify listeners of the change */
- if ((descr->flags & IW_DESCR_FLAG_EVENT) &&
- ((ret == 0) || (ret == -EIWCOMMIT))) {
- if (descr->flags & IW_DESCR_FLAG_RESTRICT)
- /* If the event is restricted, don't
- * export the payload */
- wireless_send_event(dev, cmd, wrqu, NULL);
- else
- wireless_send_event(dev, cmd, wrqu, extra);
- }
-#endif /* WE_SET_EVENT */
-
- /* Cleanup - I told you it wasn't that long ;-) */
- if (extra)
- kfree(extra);
-
- /* Call commit handler if needed and defined */
- if (ret == -EIWCOMMIT)
- ret = call_commit_handler(dev);
-
- return ret;
-}
-
-/* ---------------------------------------------------------------- */
-/*
- * Wrapper to call a private Wireless Extension GET handler.
- * Same as above...
- * It's not as nice and slimline as the standard wrapper. The cause
- * is struct iw_priv_args, which was not really designed for the
- * job we are going here.
- *
- * IMPORTANT : This function prevent to set and get data on the same
- * IOCTL and enforce the SET/GET convention. Not doing it would be
- * far too hairy...
- * If you need to set and get data at the same time, please don't use
- * a iw_handler but process it in your ioctl handler (i.e. use the
- * old driver API).
- */
-static inline int rtnetlink_private_get(struct net_device * dev,
- struct iw_event * request,
- int request_len,
- iw_handler handler,
- char ** p_buf,
- int * p_len)
-{
- const struct iw_priv_args * descr = NULL;
- unsigned int cmd;
- union iwreq_data * wrqu;
- int hdr_len;
- struct iw_request_info info;
- int extra_size = 0;
- int i;
- char * buffer = NULL;
- int buffer_size = 0;
- int ret = -EINVAL;
-
- /* Get the description of the Request */
- cmd = request->cmd;
- for (i = 0; i < dev->wireless_handlers->num_private_args; i++)
- if (cmd == dev->wireless_handlers->private_args[i].cmd) {
- descr = &(dev->wireless_handlers->private_args[i]);
- break;
- }
- if (descr == NULL)
- return -EOPNOTSUPP;
-
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Found private handler for 0x%04X\n",
- dev->name, cmd);
- printk(KERN_DEBUG "%s (WE.r) : Name %s, set %X, get %X\n",
- dev->name, descr->name, descr->set_args, descr->get_args);
-#endif /* WE_RTNETLINK_DEBUG */
-
- /* Compute the max size of the get arguments */
- extra_size = get_priv_size(descr->get_args);
-
- /* Does it fits in wrqu ? */
- if ((descr->get_args & IW_PRIV_SIZE_FIXED) &&
- (extra_size <= IFNAMSIZ)) {
- hdr_len = extra_size;
- extra_size = 0;
- } else {
- hdr_len = IW_EV_POINT_PK_LEN;
- }
-
- /* Check if wrqu is complete */
- if (request_len < hdr_len) {
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG
- "%s (WE.r) : Wireless request too short (%d)\n",
- dev->name, request_len);
-#endif /* WE_RTNETLINK_DEBUG */
- return -EINVAL;
- }
-
- /* Prepare the call */
- info.cmd = cmd;
- info.flags = 0;
-
- /* Check if we have a pointer to user space data or not. */
- if (extra_size == 0) {
-
- /* Create the kernel buffer that we will return.
- * It's at an offset to match the TYPE_POINT case... */
- buffer_size = request_len + IW_EV_POINT_OFF;
- buffer = kmalloc(buffer_size, GFP_KERNEL);
- if (buffer == NULL) {
- return -ENOMEM;
- }
- /* Copy event data */
- memcpy(buffer + IW_EV_POINT_OFF, request, request_len);
- /* Use our own copy of wrqu */
- wrqu = (union iwreq_data *) (buffer + IW_EV_POINT_OFF
- + IW_EV_LCP_PK_LEN);
-
- /* No extra arguments. Trivial to handle */
- ret = handler(dev, &info, wrqu, (char *) wrqu);
-
- } else {
- char * extra;
-
- /* Buffer for full reply */
- buffer_size = extra_size + IW_EV_POINT_PK_LEN + IW_EV_POINT_OFF;
-
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Malloc %d bytes (%d bytes)\n",
- dev->name, extra_size, buffer_size);
-#endif /* WE_RTNETLINK_DEBUG */
-
- /* Create the kernel buffer that we will return */
- buffer = kmalloc(buffer_size, GFP_KERNEL);
- if (buffer == NULL) {
- return -ENOMEM;
- }
-
- /* Put wrqu in the right place (just before extra).
- * Leave space for IWE header and dummy pointer...
- * Note that IW_EV_LCP_PK_LEN==4 bytes, so it's still aligned.
- */
- memcpy(buffer + IW_EV_LCP_PK_LEN + IW_EV_POINT_OFF,
- ((char *) request) + IW_EV_LCP_PK_LEN,
- IW_EV_POINT_PK_LEN - IW_EV_LCP_PK_LEN);
- wrqu = (union iwreq_data *) (buffer + IW_EV_LCP_PK_LEN);
-
- /* Extra comes logically after that. Offset +12 bytes. */
- extra = buffer + IW_EV_POINT_OFF + IW_EV_POINT_PK_LEN;
-
- /* Call the handler */
- ret = handler(dev, &info, wrqu, extra);
-
- /* Adjust for the actual length if it's variable,
- * avoid leaking kernel bits outside. */
- if (!(descr->get_args & IW_PRIV_SIZE_FIXED))
- extra_size = adjust_priv_size(descr->get_args, wrqu);
- /* Re-adjust reply size */
- request->len = extra_size + IW_EV_POINT_PK_LEN;
-
- /* Put the iwe header where it should, i.e. scrap the
- * dummy pointer. */
- memcpy(buffer + IW_EV_POINT_OFF, request, IW_EV_LCP_PK_LEN);
-
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Reply 0x%04X, hdr_len %d, tokens %d, extra_size %d, buffer_size %d\n", dev->name, cmd, hdr_len, wrqu->data.length, extra_size, buffer_size);
-#endif /* WE_RTNETLINK_DEBUG */
- }
-
- /* Return the buffer to the caller */
- if (!ret) {
- *p_buf = buffer;
- *p_len = request->len;
- } else {
- /* Cleanup */
- if (buffer)
- kfree(buffer);
- }
-
- return ret;
-}
-
-/* ---------------------------------------------------------------- */
-/*
- * Wrapper to call a private Wireless Extension SET handler.
- * Same as above...
- * It's not as nice and slimline as the standard wrapper. The cause
- * is struct iw_priv_args, which was not really designed for the
- * job we are going here.
- *
- * IMPORTANT : This function prevent to set and get data on the same
- * IOCTL and enforce the SET/GET convention. Not doing it would be
- * far too hairy...
- * If you need to set and get data at the same time, please don't use
- * a iw_handler but process it in your ioctl handler (i.e. use the
- * old driver API).
- */
-static inline int rtnetlink_private_set(struct net_device * dev,
- struct iw_event * request,
- int request_len,
- iw_handler handler)
-{
- const struct iw_priv_args * descr = NULL;
- unsigned int cmd;
- union iwreq_data * wrqu;
- union iwreq_data wrqu_point;
- int hdr_len;
- char * extra = NULL;
- int extra_size = 0;
- int offset = 0; /* For sub-ioctls */
- struct iw_request_info info;
- int i;
- int ret = -EINVAL;
-
- /* Get the description of the Request */
- cmd = request->cmd;
- for (i = 0; i < dev->wireless_handlers->num_private_args; i++)
- if (cmd == dev->wireless_handlers->private_args[i].cmd) {
- descr = &(dev->wireless_handlers->private_args[i]);
- break;
- }
- if (descr == NULL)
- return -EOPNOTSUPP;
-
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Found private handler for 0x%04X\n",
- ifr->ifr_name, cmd);
- printk(KERN_DEBUG "%s (WE.r) : Name %s, set %X, get %X\n",
- dev->name, descr->name, descr->set_args, descr->get_args);
-#endif /* WE_RTNETLINK_DEBUG */
-
- /* Compute the size of the set arguments */
- /* Check for sub-ioctl handler */
- if (descr->name[0] == '\0')
- /* Reserve one int for sub-ioctl index */
- offset = sizeof(__u32);
-
- /* Size of set arguments */
- extra_size = get_priv_size(descr->set_args);
-
- /* Does it fits in wrqu ? */
- if ((descr->set_args & IW_PRIV_SIZE_FIXED) &&
- (extra_size <= IFNAMSIZ)) {
- hdr_len = IW_EV_LCP_PK_LEN + extra_size;
- extra_size = 0;
- } else {
- hdr_len = IW_EV_POINT_PK_LEN;
- }
-
- /* Extract fixed header from request. This is properly aligned. */
- wrqu = (union iwreq_data *) (((char *) request) + IW_EV_LCP_PK_LEN);
-
- /* Check if wrqu is complete */
- if (request_len < hdr_len) {
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG
- "%s (WE.r) : Wireless request too short (%d)\n",
- dev->name, request_len);
-#endif /* WE_RTNETLINK_DEBUG */
- return -EINVAL;
- }
-
- /* Prepare the call */
- info.cmd = cmd;
- info.flags = 0;
-
- /* Check if we have a pointer to user space data or not. */
- if (extra_size == 0) {
-
- /* No extra arguments. Trivial to handle */
- ret = handler(dev, &info, wrqu, (char *) wrqu);
-
- } else {
- int extra_len;
-
- /* Put wrqu in the right place (skip pointer) */
- memcpy(((char *) &wrqu_point) + IW_EV_POINT_OFF,
- wrqu, IW_EV_POINT_PK_LEN - IW_EV_LCP_PK_LEN);
-
- /* Does it fits within bounds ? */
- if (wrqu_point.data.length > (descr->set_args &
- IW_PRIV_SIZE_MASK))
- return -E2BIG;
-
- /* Real length of payload */
- extra_len = adjust_priv_size(descr->set_args, &wrqu_point);
-
- /* Check if request is self consistent */
- if ((request_len - hdr_len) < extra_len) {
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Wireless request data too short (%d)\n",
- dev->name, extra_size);
-#endif /* WE_RTNETLINK_DEBUG */
- return -EINVAL;
- }
-
-#ifdef WE_RTNETLINK_DEBUG
- printk(KERN_DEBUG "%s (WE.r) : Malloc %d bytes\n",
- dev->name, extra_size);
-#endif /* WE_RTNETLINK_DEBUG */
-
- /* Always allocate for max space. Easier, and won't last
- * long... */
- extra = kmalloc(extra_size, GFP_KERNEL);
- if (extra == NULL)
- return -ENOMEM;
-
- /* Copy extra in aligned buffer */
- memcpy(extra, ((char *) request) + hdr_len, extra_len);
-
- /* Call the handler */
- ret = handler(dev, &info, &wrqu_point, extra);
-
- /* Cleanup - I told you it wasn't that long ;-) */
- kfree(extra);
- }
-
- /* Call commit handler if needed and defined */
- if (ret == -EIWCOMMIT)
- ret = call_commit_handler(dev);
-
- return ret;
-}
-
-/* ---------------------------------------------------------------- */
-/*
- * Main RtNetlink dispatcher. Called from the main networking code
- * (do_getlink() in net/core/rtnetlink.c).
- * Check the type of Request and call the appropriate wrapper...
- */
-int wireless_rtnetlink_get(struct net_device * dev,
- char * data,
- int len,
- char ** p_buf,
- int * p_len)
-{
- struct iw_event * request = (struct iw_event *) data;
- iw_handler handler;
-
- /* Check length */
- if (len < IW_EV_LCP_PK_LEN) {
- printk(KERN_DEBUG "%s (WE.r) : RtNetlink request too short (%d)\n",
- dev->name, len);
- return -EINVAL;
- }
-
- /* ReCheck length (len may have padding) */
- if (request->len > len) {
- printk(KERN_DEBUG "%s (WE.r) : RtNetlink request len invalid (%d-%d)\n",
- dev->name, request->len, len);
- return -EINVAL;
- }
-
- /* Only accept GET requests in here */
- if (!IW_IS_GET(request->cmd))
- return -EOPNOTSUPP;
-
- /* If command is `get the encoding parameters', check if
- * the user has the right to do it */
- if (request->cmd == SIOCGIWENCODE ||
- request->cmd == SIOCGIWENCODEEXT) {
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- }
-
- /* Special cases */
- if (request->cmd == SIOCGIWSTATS)
- /* Get Wireless Stats */
- return rtnetlink_standard_get(dev,
- request,
- request->len,
- &iw_handler_get_iwstats,
- p_buf, p_len);
- if (request->cmd == SIOCGIWPRIV) {
- /* Check if we have some wireless handlers defined */
- if (dev->wireless_handlers == NULL)
- return -EOPNOTSUPP;
- /* Get Wireless Stats */
- return rtnetlink_standard_get(dev,
- request,
- request->len,
- &iw_handler_get_private,
- p_buf, p_len);
- }
-
- /* Basic check */
- if (!netif_device_present(dev))
- return -ENODEV;
-
- /* Try to find the handler */
- handler = get_handler(dev, request->cmd);
- if (handler != NULL) {
- /* Standard and private are not the same */
- if (request->cmd < SIOCIWFIRSTPRIV)
- return rtnetlink_standard_get(dev,
- request,
- request->len,
- handler,
- p_buf, p_len);
- else
- return rtnetlink_private_get(dev,
- request,
- request->len,
- handler,
- p_buf, p_len);
- }
-
- return -EOPNOTSUPP;
-}
-
-/* ---------------------------------------------------------------- */
-/*
- * Main RtNetlink dispatcher. Called from the main networking code
- * (do_setlink() in net/core/rtnetlink.c).
- * Check the type of Request and call the appropriate wrapper...
- */
-int wireless_rtnetlink_set(struct net_device * dev,
- char * data,
- int len)
-{
- struct iw_event * request = (struct iw_event *) data;
- iw_handler handler;
-
- /* Check length */
- if (len < IW_EV_LCP_PK_LEN) {
- printk(KERN_DEBUG "%s (WE.r) : RtNetlink request too short (%d)\n",
- dev->name, len);
- return -EINVAL;
- }
-
- /* ReCheck length (len may have padding) */
- if (request->len > len) {
- printk(KERN_DEBUG "%s (WE.r) : RtNetlink request len invalid (%d-%d)\n",
- dev->name, request->len, len);
- return -EINVAL;
- }
-
- /* Only accept SET requests in here */
- if (!IW_IS_SET(request->cmd))
- return -EOPNOTSUPP;
-
- /* Basic check */
- if (!netif_device_present(dev))
- return -ENODEV;
-
- /* New driver API : try to find the handler */
- handler = get_handler(dev, request->cmd);
- if (handler != NULL) {
- /* Standard and private are not the same */
- if (request->cmd < SIOCIWFIRSTPRIV)
- return rtnetlink_standard_set(dev,
- request,
- request->len,
- handler);
- else
- return rtnetlink_private_set(dev,
- request,
- request->len,
- handler);
- }
-
- return -EOPNOTSUPP;
-}
-#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
-
/************************* EVENT PROCESSING *************************/
/*
diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
index 1863c0b..a228d56 100644
--- a/net/wireless/Kconfig
+++ b/net/wireless/Kconfig
@@ -14,13 +14,3 @@ config WIRELESS_EXT
Say N (if you can) unless you know you need wireless
extensions for external modules.
-
-config NET_WIRELESS_RTNETLINK
- bool "Wireless Extension API over RtNetlink"
- depends on WIRELESS_EXT
- ---help---
- Support the Wireless Extension API over the RtNetlink socket
- in addition to the traditional ioctl interface (selected above).
-
- For now, few tools use this facility, but it might grow in the
- future. The only downside is that it adds 4.5 kB to your kernel.
--
1.5.0.6
--
John W. Linville
linville@...driver.com
-
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