/*- * Copyright (c) 2003-2005 Sam Leffler, Errno Consulting * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $Id$ */ #ifndef EXPORT_SYMTAB #define EXPORT_SYMTAB #endif /* * IEEE 802.11 support (Linux-specific code) */ #ifndef AUTOCONF_INCLUDED #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* XXX for ARPHRD_* */ #include #include "if_media.h" #include "if_ethersubr.h" #include #include #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) #include /* madwifi_name_type - device name type: * values: 0: automatically assigned * 1: administratively assigned * else: reserved */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) static ssize_t show_madwifi_name_type(struct device *dev, struct device_attribute *attr, char *buf) #else static ssize_t show_madwifi_name_type(struct class_device *cdev, char *buf) #endif { ssize_t len = 0; len = snprintf(buf, PAGE_SIZE, "1"); return len; } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) static DEVICE_ATTR(madwifi_name_type, S_IRUGO, show_madwifi_name_type, NULL); #else static CLASS_DEVICE_ATTR(madwifi_name_type, S_IRUGO, show_madwifi_name_type, NULL); #endif static struct attribute *ieee80211_sysfs_attrs[] = { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) &dev_attr_madwifi_name_type.attr, #else &class_device_attr_madwifi_name_type.attr, #endif NULL }; static struct attribute_group ieee80211_attr_grp = { .name = NULL, /* No seperate (sub-)directory */ .attrs = ieee80211_sysfs_attrs }; #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24) #define proc_net init_net.proc_net #endif /* * Print a console message with the device name prepended. */ void if_printf(struct net_device *dev, const char *fmt, ...) { va_list ap; char buf[512]; /* XXX */ va_start(ap, fmt); vsnprintf(buf, sizeof(buf), fmt, ap); va_end(ap); printk("%s: %s", dev->name, buf); } /* * Allocate and setup a management frame of the specified * size. We return the sk_buff and a pointer to the start * of the contiguous data area that's been reserved based * on the packet length. The data area is forced to 32-bit * alignment and the buffer length to a multiple of 4 bytes. * This is done mainly so beacon frames (that require this) * can use this interface too. */ struct sk_buff * #ifdef IEEE80211_DEBUG_REFCNT ieee80211_getmgtframe_debug(u_int8_t **frm, u_int pktlen, const char *func, int line) #else ieee80211_getmgtframe(u_int8_t **frm, u_int pktlen) #endif { const u_int align = sizeof(u_int32_t); struct sk_buff *skb; u_int len; len = roundup(sizeof(struct ieee80211_frame) + pktlen, 4); #ifdef IEEE80211_DEBUG_REFCNT skb = ieee80211_dev_alloc_skb_debug(len + align - 1, func, line); #else skb = ieee80211_dev_alloc_skb(len + align - 1); #endif if (skb != NULL) { u_int off = ((unsigned long) skb->data) % align; if (off != 0) skb_reserve(skb, align - off); SKB_NI(skb) = NULL; SKB_CB(skb)->flags = 0; skb_reserve(skb, sizeof(struct ieee80211_frame)); *frm = skb_put(skb, pktlen); } return skb; } #ifdef IEEE80211_DEBUG_REFCNT EXPORT_SYMBOL(ieee80211_getmgtframe_debug); #else EXPORT_SYMBOL(ieee80211_getmgtframe); #endif #if IEEE80211_VLAN_TAG_USED /* * VLAN support. */ /* * Register a vlan group. */ static void ieee80211_vlan_register(struct net_device *dev, struct vlan_group *grp) { struct ieee80211vap *vap = dev->priv; vap->iv_vlgrp = grp; } /* * Add an rx vlan identifier */ static void ieee80211_vlan_add_vid(struct net_device *dev, unsigned short vid) { struct ieee80211vap *vap = dev->priv; if (vap->iv_vlgrp != NULL) vap->iv_bss->ni_vlan = vid; } /* * Kill (i.e. delete) a vlan identifier. */ static void ieee80211_vlan_kill_vid(struct net_device *dev, unsigned short vid) { struct ieee80211vap *vap = dev->priv; if (vap->iv_vlgrp != NULL) vlan_group_set_device(vap->iv_vlgrp, vid, NULL); } #endif /* IEEE80211_VLAN_TAG_USED */ void ieee80211_vlan_vattach(struct ieee80211vap *vap) { #if IEEE80211_VLAN_TAG_USED struct net_device *dev = vap->iv_dev; dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER; dev->vlan_rx_register = ieee80211_vlan_register; dev->vlan_rx_add_vid = ieee80211_vlan_add_vid; dev->vlan_rx_kill_vid = ieee80211_vlan_kill_vid; #endif /* IEEE80211_VLAN_TAG_USED */ } void ieee80211_vlan_vdetach(struct ieee80211vap *vap) { } void ieee80211_notify_node_join(struct ieee80211_node *ni, int newassoc) { struct ieee80211vap *vap = ni->ni_vap; struct net_device *dev = vap->iv_dev; union iwreq_data wreq; if (ni == vap->iv_bss) { if (newassoc) netif_carrier_on(dev); memset(&wreq, 0, sizeof(wreq)); IEEE80211_ADDR_COPY(wreq.addr.sa_data, vap->iv_bssid); wreq.addr.sa_family = ARPHRD_ETHER; #ifdef ATH_SUPERG_XR if (vap->iv_xrvap && vap->iv_flags & IEEE80211_F_XR) dev = vap->iv_xrvap->iv_dev; #endif wireless_send_event(dev, SIOCGIWAP, &wreq, NULL); } else { memset(&wreq, 0, sizeof(wreq)); IEEE80211_ADDR_COPY(wreq.addr.sa_data, ni->ni_macaddr); wreq.addr.sa_family = ARPHRD_ETHER; #ifdef ATH_SUPERG_XR if (vap->iv_xrvap && vap->iv_flags & IEEE80211_F_XR) dev = vap->iv_xrvap->iv_dev; #endif wireless_send_event(dev, IWEVREGISTERED, &wreq, NULL); } } void ieee80211_notify_node_leave(struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; struct net_device *dev = vap->iv_dev; union iwreq_data wreq; if (ni == vap->iv_bss) { netif_carrier_off(dev); memset(wreq.ap_addr.sa_data, 0, ETHER_ADDR_LEN); wreq.ap_addr.sa_family = ARPHRD_ETHER; wireless_send_event(dev, SIOCGIWAP, &wreq, NULL); } else { /* fire off wireless event station leaving */ memset(&wreq, 0, sizeof(wreq)); IEEE80211_ADDR_COPY(wreq.addr.sa_data, ni->ni_macaddr); wreq.addr.sa_family = ARPHRD_ETHER; wireless_send_event(dev, IWEVEXPIRED, &wreq, NULL); } } void ieee80211_notify_sta_stats(struct ieee80211_node *ni) { struct ieee80211vap *vap = ni->ni_vap; static const char *tag = "STA-TRAFFIC-STAT"; struct net_device *dev = vap->iv_dev; union iwreq_data wreq; char buf[1024]; snprintf(buf, sizeof(buf), "%s\nmac=" MAC_FMT "\nrx_packets=%u\nrx_bytes=%llu\n" "tx_packets=%u\ntx_bytes=%llu\n", tag, MAC_ADDR(ni->ni_macaddr), ni->ni_stats.ns_rx_data, (unsigned long long)ni->ni_stats.ns_rx_bytes, ni->ni_stats.ns_tx_data, (unsigned long long)ni->ni_stats.ns_tx_bytes); memset(&wreq, 0, sizeof(wreq)); wreq.data.length = strlen(buf); wireless_send_event(dev, IWEVCUSTOM, &wreq, buf); } void ieee80211_notify_scan_done(struct ieee80211vap *vap) { struct net_device *dev = vap->iv_dev; union iwreq_data wreq; IEEE80211_DPRINTF(vap, IEEE80211_MSG_SCAN, "%s\n", "notify scan done"); /* dispatch wireless event indicating scan completed */ wreq.data.length = 0; wreq.data.flags = 0; wireless_send_event(dev, SIOCGIWSCAN, &wreq, NULL); } void ieee80211_notify_replay_failure(struct ieee80211vap *vap, const struct ieee80211_frame *wh, const struct ieee80211_key *k, u_int64_t rsc) { static const char *tag = "MLME-REPLAYFAILURE.indication"; struct net_device *dev = vap->iv_dev; union iwreq_data wrqu; char buf[128]; /* XXX */ IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, "%s replay detected ", k->wk_cipher->ic_name, k->wk_keyix, (unsigned long long)rsc); /* TODO: needed parameters: count, keyid, key type, src address, TSC */ snprintf(buf, sizeof(buf), "%s(keyid=%d %scast addr=" MAC_FMT ")", tag, k->wk_keyix, IEEE80211_IS_MULTICAST(wh->i_addr2) ? "broad" : "uni", MAC_ADDR(wh->i_addr2)); memset(&wrqu, 0, sizeof(wrqu)); wrqu.data.length = strlen(buf); wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); } EXPORT_SYMBOL(ieee80211_notify_replay_failure); void ieee80211_notify_michael_failure(struct ieee80211vap *vap, const struct ieee80211_frame *wh, ieee80211_keyix_t keyix) { static const char *tag = "MLME-MICHAELMICFAILURE.indication"; struct net_device *dev = vap->iv_dev; union iwreq_data wrqu; char buf[128]; /* XXX */ IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_CRYPTO, wh->i_addr2, "Michael MIC verification failed ", keyix); vap->iv_stats.is_rx_tkipmic++; /* TODO: needed parameters: count, keyid, key type, src address, TSC */ snprintf(buf, sizeof(buf), "%s(keyid=%d %scast addr=" MAC_FMT ")", tag, keyix, IEEE80211_IS_MULTICAST(wh->i_addr2) ? "broad" : "uni", MAC_ADDR(wh->i_addr2)); memset(&wrqu, 0, sizeof(wrqu)); wrqu.data.length = strlen(buf); wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); } EXPORT_SYMBOL(ieee80211_notify_michael_failure); /* This function might sleep. Therefore: * Context: process * * Note that a successful call to this function does not guarantee that * the services provided by the requested module are available: * * "Note that a successful module load does not mean the module did not * then unload and exit on an error of its own. Callers must check that * the service they requested is now available not blindly invoke it." * http://kernelnewbies.org/documents/kdoc/kernel-api/r7338.html */ int ieee80211_load_module(const char *modname) { #ifdef CONFIG_KMOD int rv; rv = request_module(modname); if (rv < 0) printk(KERN_ERR "failed to automatically load module: %s; " \ "errno: %d\n", modname, rv); return rv; #else /* CONFIG_KMOD */ printk(KERN_ERR "Unable to load needed module: %s; no support for " \ "automatic module loading\n", modname); return -ENOSYS; #endif /* CONFIG_KMOD */ } static struct proc_dir_entry *proc_madwifi; static int proc_madwifi_count = 0; static int proc_read_nodes(struct ieee80211vap *vap, char *buf, int space) { char *p = buf; struct ieee80211_node *ni; struct ieee80211_node_table *nt = (struct ieee80211_node_table *)&vap->iv_ic->ic_sta; IEEE80211_NODE_TABLE_LOCK_IRQ(nt); TAILQ_FOREACH(ni, &nt->nt_node, ni_list) { struct timespec t; /* Assume each node needs 500 bytes */ if (buf + space < p + 500) break; if ((ni->ni_vap == vap) && (memcmp(vap->iv_myaddr, ni->ni_macaddr, IEEE80211_ADDR_LEN) != 0)) { jiffies_to_timespec(jiffies - ni->ni_last_rx, &t); p += sprintf(p, "macaddr: <" MAC_FMT ">\n", MAC_ADDR(ni->ni_macaddr)); p += sprintf(p, " RSSI %d\n", ni->ni_rssi); p += sprintf(p, " last_rx %ld.%06ld\n", t.tv_sec, t.tv_nsec / 1000); p += sprintf(p, " ni_tstamp %10llu ni_rtsf %10llu\n", le64_to_cpu(ni->ni_tstamp.tsf), ni->ni_rtsf); } } IEEE80211_NODE_TABLE_UNLOCK_IRQ(nt); return (p - buf); } static ssize_t proc_ieee80211_read(struct file *file, char __user *buf, size_t len, loff_t *offset) { loff_t pos = *offset; struct proc_ieee80211_priv *pv = (struct proc_ieee80211_priv *)file->private_data; if (!pv->rbuf) return -EINVAL; if (pos < 0) return -EINVAL; if (pos > pv->rlen) return -EFAULT; if (len > pv->rlen - pos) len = pv->rlen - pos; if (copy_to_user(buf, pv->rbuf + pos, len)) return -EFAULT; *offset = pos + len; return len; } static int proc_ieee80211_open(struct inode *inode, struct file *file) { struct proc_ieee80211_priv *pv = NULL; struct proc_dir_entry *dp = PDE(inode); struct ieee80211vap *vap = dp->data; if (!(file->private_data = kzalloc(sizeof(struct proc_ieee80211_priv), GFP_KERNEL))) return -ENOMEM; /* initially allocate both read and write buffers */ pv = (struct proc_ieee80211_priv *)file->private_data; pv->rbuf = vmalloc(MAX_PROC_IEEE80211_SIZE); if (!pv->rbuf) { kfree(pv); return -ENOMEM; } pv->wbuf = vmalloc(MAX_PROC_IEEE80211_SIZE); if (!pv->wbuf) { vfree(pv->rbuf); kfree(pv); return -ENOMEM; } memset(pv->wbuf, 0, MAX_PROC_IEEE80211_SIZE); memset(pv->rbuf, 0, MAX_PROC_IEEE80211_SIZE); pv->max_wlen = MAX_PROC_IEEE80211_SIZE; pv->max_rlen = MAX_PROC_IEEE80211_SIZE; /* now read the data into the buffer */ pv->rlen = proc_read_nodes(vap, pv->rbuf, MAX_PROC_IEEE80211_SIZE); return 0; } static ssize_t proc_ieee80211_write(struct file *file, const char __user *buf, size_t len, loff_t *offset) { loff_t pos = *offset; struct proc_ieee80211_priv *pv = (struct proc_ieee80211_priv *)file->private_data; if (!pv->wbuf) return -EINVAL; if (pos < 0) return -EINVAL; if (pos >= pv->max_wlen) return 0; if (len > pv->max_wlen - pos) len = pv->max_wlen - pos; if (copy_from_user(pv->wbuf + pos, buf, len)) return -EFAULT; if (pos + len > pv->wlen) pv->wlen = pos + len; *offset = pos + len; return len; } static int proc_ieee80211_close(struct inode *inode, struct file *file) { struct proc_ieee80211_priv *pv = (struct proc_ieee80211_priv *)file->private_data; if (pv->rbuf) vfree(pv->rbuf); if (pv->wbuf) vfree(pv->wbuf); kfree(pv); return 0; } static struct file_operations proc_ieee80211_ops = { .read = proc_ieee80211_read, .write = proc_ieee80211_write, .open = proc_ieee80211_open, .release = proc_ieee80211_close, }; #ifdef IEEE80211_DEBUG static int IEEE80211_SYSCTL_DECL(ieee80211_sysctl_debug, ctl, write, filp, buffer, lenp, ppos) { struct ieee80211vap *vap = ctl->extra1; u_int val; int ret; ctl->data = &val; ctl->maxlen = sizeof(val); if (write) { ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); if (ret == 0) { vap->iv_debug = (val & ~IEEE80211_MSG_IC); vap->iv_ic->ic_debug = (val & IEEE80211_MSG_IC); } } else { /* VAP specific and 'global' debug flags */ val = vap->iv_debug | vap->iv_ic->ic_debug; ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); } return ret; } #endif /* IEEE80211_DEBUG */ static int IEEE80211_SYSCTL_DECL(ieee80211_sysctl_dev_type, ctl, write, filp, buffer, lenp, ppos) { struct ieee80211vap *vap = ctl->extra1; u_int val; int ret; ctl->data = &val; ctl->maxlen = sizeof(val); if (write) { ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); if (ret == 0 && vap->iv_opmode == IEEE80211_M_MONITOR) { if (val == ARPHRD_IEEE80211_RADIOTAP || val == ARPHRD_IEEE80211 || val == ARPHRD_IEEE80211_PRISM || val == ARPHRD_IEEE80211_ATHDESC) { vap->iv_dev->type = val; } } } else { val = vap->iv_dev->type; ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); } return ret; } static int IEEE80211_SYSCTL_DECL(ieee80211_sysctl_monitor_nods_only, ctl, write, filp, buffer, lenp, ppos) { struct ieee80211vap *vap = ctl->extra1; u_int val; int ret; ctl->data = &val; ctl->maxlen = sizeof(val); if (write) { ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); if (ret == 0) vap->iv_monitor_nods_only = val; } else { val = vap->iv_monitor_nods_only; ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); } return ret; } static int IEEE80211_SYSCTL_DECL(ieee80211_sysctl_monitor_txf_len, ctl, write, filp, buffer, lenp, ppos) { struct ieee80211vap *vap = ctl->extra1; u_int val; int ret; ctl->data = &val; ctl->maxlen = sizeof(val); if (write) { ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); if (ret == 0) vap->iv_monitor_txf_len = val; } else { val = vap->iv_monitor_txf_len; ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); } return ret; } static int IEEE80211_SYSCTL_DECL(ieee80211_sysctl_monitor_phy_errors, ctl, write, filp, buffer, lenp, ppos) { struct ieee80211vap *vap = ctl->extra1; u_int val; int ret; ctl->data = &val; ctl->maxlen = sizeof(val); if (write) { ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); if (ret == 0) vap->iv_monitor_phy_errors = val; } else { val = vap->iv_monitor_phy_errors; ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); } return ret; } static int IEEE80211_SYSCTL_DECL(ieee80211_sysctl_monitor_crc_errors, ctl, write, filp, buffer, lenp, ppos) { struct ieee80211vap *vap = ctl->extra1; u_int val; int ret; ctl->data = &val; ctl->maxlen = sizeof(val); if (write) { ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); if (ret == 0) vap->iv_monitor_crc_errors = val; } else { val = vap->iv_monitor_crc_errors; ret = IEEE80211_SYSCTL_PROC_DOINTVEC(ctl, write, filp, buffer, lenp, ppos); } return ret; } static const ctl_table ieee80211_sysctl_template[] = { #ifdef IEEE80211_DEBUG { .ctl_name = CTL_AUTO, .procname = "debug", .mode = 0644, .proc_handler = ieee80211_sysctl_debug }, #endif { .ctl_name = CTL_AUTO, .procname = "dev_type", .mode = 0644, .proc_handler = ieee80211_sysctl_dev_type }, { .ctl_name = CTL_AUTO, .procname = "monitor_nods_only", .mode = 0644, .proc_handler = ieee80211_sysctl_monitor_nods_only }, { .ctl_name = CTL_AUTO, .procname = "monitor_txf_len", .mode = 0644, .proc_handler = ieee80211_sysctl_monitor_txf_len }, { .ctl_name = CTL_AUTO, .procname = "monitor_phy_errors", .mode = 0644, .proc_handler = ieee80211_sysctl_monitor_phy_errors }, { .ctl_name = CTL_AUTO, .procname = "monitor_crc_errors", .mode = 0644, .proc_handler = ieee80211_sysctl_monitor_crc_errors }, /* NB: must be last entry before NULL */ { .ctl_name = CTL_AUTO, .procname = "%parent", .maxlen = IFNAMSIZ, .mode = 0444, .proc_handler = proc_dostring }, { 0 } }; void ieee80211_virtfs_latevattach(struct ieee80211vap *vap) { int i, space; char *devname = NULL; struct ieee80211_proc_entry *tmp = NULL; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) int ret; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) ret = sysfs_create_group(&vap->iv_dev->dev.kobj, &ieee80211_attr_grp); #else ret = sysfs_create_group(&vap->iv_dev->class_dev.kobj, &ieee80211_attr_grp); #endif if (ret) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) sysfs_remove_group(&vap->iv_dev->dev.kobj, &ieee80211_attr_grp); #else sysfs_remove_group(&vap->iv_dev->class_dev.kobj, &ieee80211_attr_grp); #endif printk("%s: %s - unable to create sysfs attribute group\n", __func__, vap->iv_dev->name); return; } #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) */ space = 5 * sizeof(struct ctl_table) + sizeof(ieee80211_sysctl_template); vap->iv_sysctls = kzalloc(space, GFP_KERNEL); if (vap->iv_sysctls == NULL) { printk("%s: no memory for sysctl table!\n", __func__); return; } /* * Reserve space for the device name outside the net_device structure * so that if the name changes we know what it used to be. */ devname = kmalloc((strlen(vap->iv_dev->name) + 1) * sizeof(char), GFP_KERNEL); if (devname == NULL) { printk("%s: no memory for VAP name!\n", __func__); return; } strncpy(devname, vap->iv_dev->name, strlen(vap->iv_dev->name) + 1); /* setup the table */ vap->iv_sysctls[0].ctl_name = CTL_NET; vap->iv_sysctls[0].procname = "net"; vap->iv_sysctls[0].mode = 0555; vap->iv_sysctls[0].child = &vap->iv_sysctls[2]; /* [1] is NULL terminator */ vap->iv_sysctls[2].ctl_name = CTL_AUTO; vap->iv_sysctls[2].procname = devname; /* XXX bad idea? */ vap->iv_sysctls[2].mode = 0555; vap->iv_sysctls[2].child = &vap->iv_sysctls[4]; /* [3] is NULL terminator */ /* copy in pre-defined data */ memcpy(&vap->iv_sysctls[4], ieee80211_sysctl_template, sizeof(ieee80211_sysctl_template)); /* add in dynamic data references */ for (i = 4; vap->iv_sysctls[i].procname; i++) if (vap->iv_sysctls[i].extra1 == NULL) vap->iv_sysctls[i].extra1 = vap; /* tack on back-pointer to parent device */ vap->iv_sysctls[i-1].data = vap->iv_ic->ic_dev->name; /* XXX? */ /* and register everything */ vap->iv_sysctl_header = ATH_REGISTER_SYSCTL_TABLE(vap->iv_sysctls); if (!vap->iv_sysctl_header) { printk("%s: failed to register sysctls!\n", vap->iv_dev->name); kfree(devname); kfree(vap->iv_sysctls); vap->iv_sysctls = NULL; } /* Ensure the base madwifi directory exists */ if (!proc_madwifi && proc_net != NULL) { proc_madwifi = proc_mkdir("madwifi", proc_net); if (!proc_madwifi) printk(KERN_WARNING "Failed to mkdir /proc/net/madwifi\n"); } /* Create a proc directory named after the VAP */ if (proc_madwifi) { proc_madwifi_count++; vap->iv_proc = proc_mkdir(vap->iv_dev->name, proc_madwifi); } /* Create a proc entry listing the associated stations */ ieee80211_proc_vcreate(vap, &proc_ieee80211_ops, "associated_sta"); /* Recreate any other proc entries that have been registered */ if (vap->iv_proc) { tmp = vap->iv_proc_entries; while (tmp) { if (!tmp->entry) { tmp->entry = create_proc_entry(tmp->name, PROC_IEEE80211_PERM, vap->iv_proc); tmp->entry->data = vap; tmp->entry->proc_fops = tmp->fileops; } tmp = tmp->next; } } } /* Frees all memory used for the list of proc entries */ void ieee80211_proc_cleanup(struct ieee80211vap *vap) { struct ieee80211_proc_entry *tmp = vap->iv_proc_entries; struct ieee80211_proc_entry *next = NULL; while (tmp) { next = tmp->next; kfree(tmp); tmp = next; } } /* Called by other modules to register a proc entry under the vap directory */ int ieee80211_proc_vcreate(struct ieee80211vap *vap, struct file_operations *fileops, char *name) { struct ieee80211_proc_entry *entry; struct ieee80211_proc_entry *tmp = NULL; /* Ignore if already in the list */ if (vap->iv_proc_entries) { tmp = vap->iv_proc_entries; do { if (strcmp(tmp->name, name)==0) return -1; /* Check for end of list */ if (!tmp->next) break; /* Otherwise move on */ tmp = tmp->next; } while (1); } /* Create an item in our list for the new entry */ entry = kmalloc(sizeof(struct ieee80211_proc_entry), GFP_KERNEL); if (entry == NULL) { printk("%s: no memory for new proc entry (%s)!\n", __func__, name); return -1; } /* Replace null fileops pointers with our standard functions */ if (!fileops->open) fileops->open = proc_ieee80211_open; if (!fileops->release) fileops->release = proc_ieee80211_close; if (!fileops->read) fileops->read = proc_ieee80211_read; if (!fileops->write) fileops->write = proc_ieee80211_write; /* Create the entry record */ entry->name = name; entry->fileops = fileops; entry->next = NULL; entry->entry = NULL; /* Create the actual proc entry */ if (vap->iv_proc) { entry->entry = create_proc_entry(entry->name, PROC_IEEE80211_PERM, vap->iv_proc); entry->entry->data = vap; entry->entry->proc_fops = entry->fileops; } /* Add it to the list */ if (!tmp) { /* Add to the start */ vap->iv_proc_entries = entry; } else { /* Add to the end */ tmp->next = entry; } return 0; } EXPORT_SYMBOL(ieee80211_proc_vcreate); void ieee80211_virtfs_vdetach(struct ieee80211vap *vap) { struct ieee80211_proc_entry *tmp=NULL; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) sysfs_remove_group(&vap->iv_dev->dev.kobj, &ieee80211_attr_grp); #elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) sysfs_remove_group(&vap->iv_dev->class_dev.kobj, &ieee80211_attr_grp); #endif if (vap->iv_sysctl_header) { unregister_sysctl_table(vap->iv_sysctl_header); vap->iv_sysctl_header = NULL; } if (vap->iv_proc) { /* Remove child proc entries but leave them in the list */ tmp = vap->iv_proc_entries; while (tmp) { if (tmp->entry) { remove_proc_entry(tmp->name, vap->iv_proc); tmp->entry = NULL; } tmp = tmp->next; } remove_proc_entry(vap->iv_proc->name, proc_madwifi); if (proc_madwifi_count == 1) { remove_proc_entry("madwifi", proc_net); proc_madwifi = NULL; } proc_madwifi_count--; } if (vap->iv_sysctls && vap->iv_sysctls[2].procname) { kfree(vap->iv_sysctls[2].procname); vap->iv_sysctls[2].procname = NULL; } if (vap->iv_sysctls) { kfree(vap->iv_sysctls); vap->iv_sysctls = NULL; } } /* Function to handle the device event notifications. * If the event is a NETDEV_CHANGENAME, and is for an interface * we are taking care of, then we want to remove its existing * proc entries (which now have the wrong names) and add * new, correct, entries. */ static int ieee80211_rcv_dev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = (struct net_device *)ptr; if (!dev || dev->open != &ieee80211_open) return 0; switch (event) { case NETDEV_CHANGENAME: ieee80211_virtfs_vdetach(dev->priv); ieee80211_virtfs_latevattach(dev->priv); return NOTIFY_DONE; default: break; } return 0; } static struct notifier_block ieee80211_event_block = { .notifier_call = ieee80211_rcv_dev_event }; /* * Module glue. */ #include "release.h" static char *version = RELEASE_VERSION; static char *dev_info = "wlan"; MODULE_AUTHOR("Errno Consulting, Sam Leffler"); MODULE_DESCRIPTION("802.11 wireless LAN protocol support"); #ifdef MODULE_VERSION MODULE_VERSION(RELEASE_VERSION); #endif #ifdef MODULE_LICENSE MODULE_LICENSE("Dual BSD/GPL"); #endif extern void ieee80211_auth_setup(void); static int __init init_wlan(void) { register_netdevice_notifier(&ieee80211_event_block); printk(KERN_INFO "%s: %s\n", dev_info, version); return 0; } module_init(init_wlan); static void __exit exit_wlan(void) { unregister_netdevice_notifier(&ieee80211_event_block); printk(KERN_INFO "%s: driver unloaded\n", dev_info); } module_exit(exit_wlan);