diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-28 09:05:25 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-28 09:05:25 -0700 |
commit | e5dfa9282f3db461a896a6692b529e1823ba98c6 (patch) | |
tree | 574d23cebc57c657373b0e1b6692c047aba8dd6e /net | |
parent | 5dd962494f76fb3ef1196cd420b5d6260d7a3766 (diff) | |
parent | b2ab040db85835e54c7559533df7f85902617926 (diff) | |
download | linux-e5dfa9282f3db461a896a6692b529e1823ba98c6.tar.gz linux-e5dfa9282f3db461a896a6692b529e1823ba98c6.tar.bz2 linux-e5dfa9282f3db461a896a6692b529e1823ba98c6.zip |
Merge branch 'upstream' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
Diffstat (limited to 'net')
-rw-r--r-- | net/ieee80211/Makefile | 3 | ||||
-rw-r--r-- | net/ieee80211/ieee80211_crypt.c | 59 | ||||
-rw-r--r-- | net/ieee80211/ieee80211_crypt_ccmp.c | 75 | ||||
-rw-r--r-- | net/ieee80211/ieee80211_crypt_tkip.c | 150 | ||||
-rw-r--r-- | net/ieee80211/ieee80211_crypt_wep.c | 26 | ||||
-rw-r--r-- | net/ieee80211/ieee80211_geo.c | 141 | ||||
-rw-r--r-- | net/ieee80211/ieee80211_module.c | 65 | ||||
-rw-r--r-- | net/ieee80211/ieee80211_rx.c | 610 | ||||
-rw-r--r-- | net/ieee80211/ieee80211_tx.c | 321 | ||||
-rw-r--r-- | net/ieee80211/ieee80211_wx.c | 372 |
10 files changed, 1392 insertions, 430 deletions
diff --git a/net/ieee80211/Makefile b/net/ieee80211/Makefile index a6ccac5baea8..f988417121da 100644 --- a/net/ieee80211/Makefile +++ b/net/ieee80211/Makefile @@ -7,5 +7,6 @@ ieee80211-objs := \ ieee80211_module.o \ ieee80211_tx.o \ ieee80211_rx.o \ - ieee80211_wx.o + ieee80211_wx.o \ + ieee80211_geo.o diff --git a/net/ieee80211/ieee80211_crypt.c b/net/ieee80211/ieee80211_crypt.c index 61a9d92e455b..f3b6aa3be638 100644 --- a/net/ieee80211/ieee80211_crypt.c +++ b/net/ieee80211/ieee80211_crypt.c @@ -41,6 +41,12 @@ void ieee80211_crypt_deinit_entries(struct ieee80211_device *ieee, int force) { struct list_head *ptr, *n; struct ieee80211_crypt_data *entry; + unsigned long flags; + + spin_lock_irqsave(&ieee->lock, flags); + + if (list_empty(&ieee->crypt_deinit_list)) + goto unlock; for (ptr = ieee->crypt_deinit_list.next, n = ptr->next; ptr != &ieee->crypt_deinit_list; ptr = n, n = ptr->next) { @@ -57,6 +63,18 @@ void ieee80211_crypt_deinit_entries(struct ieee80211_device *ieee, int force) } kfree(entry); } + unlock: + spin_unlock_irqrestore(&ieee->lock, flags); +} + +/* After this, crypt_deinit_list won't accept new members */ +void ieee80211_crypt_quiescing(struct ieee80211_device *ieee) +{ + unsigned long flags; + + spin_lock_irqsave(&ieee->lock, flags); + ieee->crypt_quiesced = 1; + spin_unlock_irqrestore(&ieee->lock, flags); } void ieee80211_crypt_deinit_handler(unsigned long data) @@ -64,16 +82,16 @@ void ieee80211_crypt_deinit_handler(unsigned long data) struct ieee80211_device *ieee = (struct ieee80211_device *)data; unsigned long flags; - spin_lock_irqsave(&ieee->lock, flags); ieee80211_crypt_deinit_entries(ieee, 0); - if (!list_empty(&ieee->crypt_deinit_list)) { + + spin_lock_irqsave(&ieee->lock, flags); + if (!list_empty(&ieee->crypt_deinit_list) && !ieee->crypt_quiesced) { printk(KERN_DEBUG "%s: entries remaining in delayed crypt " "deletion list\n", ieee->dev->name); ieee->crypt_deinit_timer.expires = jiffies + HZ; add_timer(&ieee->crypt_deinit_timer); } spin_unlock_irqrestore(&ieee->lock, flags); - } void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee, @@ -93,10 +111,12 @@ void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee, * locking. */ spin_lock_irqsave(&ieee->lock, flags); - list_add(&tmp->list, &ieee->crypt_deinit_list); - if (!timer_pending(&ieee->crypt_deinit_timer)) { - ieee->crypt_deinit_timer.expires = jiffies + HZ; - add_timer(&ieee->crypt_deinit_timer); + if (!ieee->crypt_quiesced) { + list_add(&tmp->list, &ieee->crypt_deinit_list); + if (!timer_pending(&ieee->crypt_deinit_timer)) { + ieee->crypt_deinit_timer.expires = jiffies + HZ; + add_timer(&ieee->crypt_deinit_timer); + } } spin_unlock_irqrestore(&ieee->lock, flags); } @@ -191,18 +211,18 @@ static void ieee80211_crypt_null_deinit(void *priv) } static struct ieee80211_crypto_ops ieee80211_crypt_null = { - .name = "NULL", - .init = ieee80211_crypt_null_init, - .deinit = ieee80211_crypt_null_deinit, - .encrypt_mpdu = NULL, - .decrypt_mpdu = NULL, - .encrypt_msdu = NULL, - .decrypt_msdu = NULL, - .set_key = NULL, - .get_key = NULL, - .extra_prefix_len = 0, - .extra_postfix_len = 0, - .owner = THIS_MODULE, + .name = "NULL", + .init = ieee80211_crypt_null_init, + .deinit = ieee80211_crypt_null_deinit, + .encrypt_mpdu = NULL, + .decrypt_mpdu = NULL, + .encrypt_msdu = NULL, + .decrypt_msdu = NULL, + .set_key = NULL, + .get_key = NULL, + .extra_mpdu_prefix_len = 0, + .extra_mpdu_postfix_len = 0, + .owner = THIS_MODULE, }; static int __init ieee80211_crypto_init(void) @@ -249,6 +269,7 @@ static void __exit ieee80211_crypto_deinit(void) EXPORT_SYMBOL(ieee80211_crypt_deinit_entries); EXPORT_SYMBOL(ieee80211_crypt_deinit_handler); EXPORT_SYMBOL(ieee80211_crypt_delayed_deinit); +EXPORT_SYMBOL(ieee80211_crypt_quiescing); EXPORT_SYMBOL(ieee80211_register_crypto_ops); EXPORT_SYMBOL(ieee80211_unregister_crypto_ops); diff --git a/net/ieee80211/ieee80211_crypt_ccmp.c b/net/ieee80211/ieee80211_crypt_ccmp.c index 8fc13f45971e..05a853c13012 100644 --- a/net/ieee80211/ieee80211_crypt_ccmp.c +++ b/net/ieee80211/ieee80211_crypt_ccmp.c @@ -119,7 +119,7 @@ static inline void xor_block(u8 * b, u8 * a, size_t len) } static void ccmp_init_blocks(struct crypto_tfm *tfm, - struct ieee80211_hdr *hdr, + struct ieee80211_hdr_4addr *hdr, u8 * pn, size_t dlen, u8 * b0, u8 * auth, u8 * s0) { u8 *pos, qc = 0; @@ -191,26 +191,18 @@ static void ccmp_init_blocks(struct crypto_tfm *tfm, ieee80211_ccmp_aes_encrypt(tfm, b0, s0); } -static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv) +static int ieee80211_ccmp_hdr(struct sk_buff *skb, int hdr_len, void *priv) { struct ieee80211_ccmp_data *key = priv; - int data_len, i, blocks, last, len; - u8 *pos, *mic; - struct ieee80211_hdr *hdr; - u8 *b0 = key->tx_b0; - u8 *b = key->tx_b; - u8 *e = key->tx_e; - u8 *s0 = key->tx_s0; + int i; + u8 *pos; - if (skb_headroom(skb) < CCMP_HDR_LEN || - skb_tailroom(skb) < CCMP_MIC_LEN || skb->len < hdr_len) + if (skb_headroom(skb) < CCMP_HDR_LEN || skb->len < hdr_len) return -1; - data_len = skb->len - hdr_len; pos = skb_push(skb, CCMP_HDR_LEN); memmove(pos, pos + CCMP_HDR_LEN, hdr_len); pos += hdr_len; - mic = skb_put(skb, CCMP_MIC_LEN); i = CCMP_PN_LEN - 1; while (i >= 0) { @@ -229,7 +221,31 @@ static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv) *pos++ = key->tx_pn[1]; *pos++ = key->tx_pn[0]; - hdr = (struct ieee80211_hdr *)skb->data; + return CCMP_HDR_LEN; +} + +static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv) +{ + struct ieee80211_ccmp_data *key = priv; + int data_len, i, blocks, last, len; + u8 *pos, *mic; + struct ieee80211_hdr_4addr *hdr; + u8 *b0 = key->tx_b0; + u8 *b = key->tx_b; + u8 *e = key->tx_e; + u8 *s0 = key->tx_s0; + + if (skb_tailroom(skb) < CCMP_MIC_LEN || skb->len < hdr_len) + return -1; + + data_len = skb->len - hdr_len; + len = ieee80211_ccmp_hdr(skb, hdr_len, priv); + if (len < 0) + return -1; + + pos = skb->data + hdr_len + CCMP_HDR_LEN; + mic = skb_put(skb, CCMP_MIC_LEN); + hdr = (struct ieee80211_hdr_4addr *)skb->data; ccmp_init_blocks(key->tfm, hdr, key->tx_pn, data_len, b0, b, s0); blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN; @@ -258,7 +274,7 @@ static int ieee80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv) { struct ieee80211_ccmp_data *key = priv; u8 keyidx, *pos; - struct ieee80211_hdr *hdr; + struct ieee80211_hdr_4addr *hdr; u8 *b0 = key->rx_b0; u8 *b = key->rx_b; u8 *a = key->rx_a; @@ -272,7 +288,7 @@ static int ieee80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv) return -1; } - hdr = (struct ieee80211_hdr *)skb->data; + hdr = (struct ieee80211_hdr_4addr *)skb->data; pos = skb->data + hdr_len; keyidx = pos[3]; if (!(keyidx & (1 << 5))) { @@ -426,19 +442,20 @@ static char *ieee80211_ccmp_print_stats(char *p, void *priv) } static struct ieee80211_crypto_ops ieee80211_crypt_ccmp = { - .name = "CCMP", - .init = ieee80211_ccmp_init, - .deinit = ieee80211_ccmp_deinit, - .encrypt_mpdu = ieee80211_ccmp_encrypt, - .decrypt_mpdu = ieee80211_ccmp_decrypt, - .encrypt_msdu = NULL, - .decrypt_msdu = NULL, - .set_key = ieee80211_ccmp_set_key, - .get_key = ieee80211_ccmp_get_key, - .print_stats = ieee80211_ccmp_print_stats, - .extra_prefix_len = CCMP_HDR_LEN, - .extra_postfix_len = CCMP_MIC_LEN, - .owner = THIS_MODULE, + .name = "CCMP", + .init = ieee80211_ccmp_init, + .deinit = ieee80211_ccmp_deinit, + .build_iv = ieee80211_ccmp_hdr, + .encrypt_mpdu = ieee80211_ccmp_encrypt, + .decrypt_mpdu = ieee80211_ccmp_decrypt, + .encrypt_msdu = NULL, + .decrypt_msdu = NULL, + .set_key = ieee80211_ccmp_set_key, + .get_key = ieee80211_ccmp_get_key, + .print_stats = ieee80211_ccmp_print_stats, + .extra_mpdu_prefix_len = CCMP_HDR_LEN, + .extra_mpdu_postfix_len = CCMP_MIC_LEN, + .owner = THIS_MODULE, }; static int __init ieee80211_crypto_ccmp_init(void) diff --git a/net/ieee80211/ieee80211_crypt_tkip.c b/net/ieee80211/ieee80211_crypt_tkip.c index d4f9164be1a1..2e34f29b7956 100644 --- a/net/ieee80211/ieee80211_crypt_tkip.c +++ b/net/ieee80211/ieee80211_crypt_tkip.c @@ -59,8 +59,24 @@ struct ieee80211_tkip_data { /* scratch buffers for virt_to_page() (crypto API) */ u8 rx_hdr[16], tx_hdr[16]; + + unsigned long flags; }; +static unsigned long ieee80211_tkip_set_flags(unsigned long flags, void *priv) +{ + struct ieee80211_tkip_data *_priv = priv; + unsigned long old_flags = _priv->flags; + _priv->flags = flags; + return old_flags; +} + +static unsigned long ieee80211_tkip_get_flags(void *priv) +{ + struct ieee80211_tkip_data *_priv = priv; + return _priv->flags; +} + static void *ieee80211_tkip_init(int key_idx) { struct ieee80211_tkip_data *priv; @@ -69,6 +85,7 @@ static void *ieee80211_tkip_init(int key_idx) if (priv == NULL) goto fail; memset(priv, 0, sizeof(*priv)); + priv->key_idx = key_idx; priv->tfm_arc4 = crypto_alloc_tfm("arc4", 0); @@ -255,25 +272,27 @@ static void tkip_mixing_phase2(u8 * WEPSeed, const u8 * TK, const u16 * TTAK, #endif } -static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv) +static u8 *ieee80211_tkip_hdr(struct sk_buff *skb, int hdr_len, void *priv) { struct ieee80211_tkip_data *tkey = priv; int len; - u8 rc4key[16], *pos, *icv; - struct ieee80211_hdr *hdr; + u8 *rc4key, *pos, *icv; + struct ieee80211_hdr_4addr *hdr; u32 crc; - struct scatterlist sg; - if (skb_headroom(skb) < 8 || skb_tailroom(skb) < 4 || - skb->len < hdr_len) - return -1; + hdr = (struct ieee80211_hdr_4addr *)skb->data; + + if (skb_headroom(skb) < 8 || skb->len < hdr_len) + return NULL; - hdr = (struct ieee80211_hdr *)skb->data; if (!tkey->tx_phase1_done) { tkip_mixing_phase1(tkey->tx_ttak, tkey->key, hdr->addr2, tkey->tx_iv32); tkey->tx_phase1_done = 1; } + rc4key = kmalloc(16, GFP_ATOMIC); + if (!rc4key) + return NULL; tkip_mixing_phase2(rc4key, tkey->key, tkey->tx_ttak, tkey->tx_iv16); len = skb->len - hdr_len; @@ -282,9 +301,9 @@ static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv) pos += hdr_len; icv = skb_put(skb, 4); - *pos++ = rc4key[0]; - *pos++ = rc4key[1]; - *pos++ = rc4key[2]; + *pos++ = *rc4key; + *pos++ = *(rc4key + 1); + *pos++ = *(rc4key + 2); *pos++ = (tkey->key_idx << 6) | (1 << 5) /* Ext IV included */ ; *pos++ = tkey->tx_iv32 & 0xff; *pos++ = (tkey->tx_iv32 >> 8) & 0xff; @@ -297,6 +316,38 @@ static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv) icv[2] = crc >> 16; icv[3] = crc >> 24; + return rc4key; +} + +static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv) +{ + struct ieee80211_tkip_data *tkey = priv; + int len; + const u8 *rc4key; + u8 *pos; + struct scatterlist sg; + + if (tkey->flags & IEEE80211_CRYPTO_TKIP_COUNTERMEASURES) { + if (net_ratelimit()) { + struct ieee80211_hdr_4addr *hdr = + (struct ieee80211_hdr_4addr *)skb->data; + printk(KERN_DEBUG "TKIP countermeasures: dropped " + "TX packet to " MAC_FMT "\n", + MAC_ARG(hdr->addr1)); + } + return -1; + } + + if (skb_tailroom(skb) < 4 || skb->len < hdr_len) + return -1; + + len = skb->len - hdr_len; + pos = skb->data + hdr_len; + + rc4key = ieee80211_tkip_hdr(skb, hdr_len, priv); + if (!rc4key) + return -1; + crypto_cipher_setkey(tkey->tfm_arc4, rc4key, 16); sg.page = virt_to_page(pos); sg.offset = offset_in_page(pos); @@ -319,16 +370,26 @@ static int ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv) u8 keyidx, *pos; u32 iv32; u16 iv16; - struct ieee80211_hdr *hdr; + struct ieee80211_hdr_4addr *hdr; u8 icv[4]; u32 crc; struct scatterlist sg; int plen; + hdr = (struct ieee80211_hdr_4addr *)skb->data; + + if (tkey->flags & IEEE80211_CRYPTO_TKIP_COUNTERMEASURES) { + if (net_ratelimit()) { + printk(KERN_DEBUG "TKIP countermeasures: dropped " + "received packet from " MAC_FMT "\n", + MAC_ARG(hdr->addr2)); + } + return -1; + } + if (skb->len < hdr_len + 8 + 4) return -1; - hdr = (struct ieee80211_hdr *)skb->data; pos = skb->data + hdr_len; keyidx = pos[3]; if (!(keyidx & (1 << 5))) { @@ -441,9 +502,9 @@ static int michael_mic(struct ieee80211_tkip_data *tkey, u8 * key, u8 * hdr, static void michael_mic_hdr(struct sk_buff *skb, u8 * hdr) { - struct ieee80211_hdr *hdr11; + struct ieee80211_hdr_4addr *hdr11; - hdr11 = (struct ieee80211_hdr *)skb->data; + hdr11 = (struct ieee80211_hdr_4addr *)skb->data; switch (le16_to_cpu(hdr11->frame_ctl) & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) { case IEEE80211_FCTL_TODS: @@ -490,9 +551,9 @@ static int ieee80211_michael_mic_add(struct sk_buff *skb, int hdr_len, return 0; } -#if WIRELESS_EXT >= 18 static void ieee80211_michael_mic_failure(struct net_device *dev, - struct ieee80211_hdr *hdr, int keyidx) + struct ieee80211_hdr_4addr *hdr, + int keyidx) { union iwreq_data wrqu; struct iw_michaelmicfailure ev; @@ -510,28 +571,6 @@ static void ieee80211_michael_mic_failure(struct net_device *dev, wrqu.data.length = sizeof(ev); wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev); } -#elif WIRELESS_EXT >= 15 -static void ieee80211_michael_mic_failure(struct net_device *dev, - struct ieee80211_hdr *hdr, int keyidx) -{ - union iwreq_data wrqu; - char buf[128]; - - /* TODO: needed parameters: count, keyid, key type, TSC */ - sprintf(buf, "MLME-MICHAELMICFAILURE.indication(keyid=%d %scast addr=" - MAC_FMT ")", keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni", - MAC_ARG(hdr->addr2)); - memset(&wrqu, 0, sizeof(wrqu)); - wrqu.data.length = strlen(buf); - wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf); -} -#else /* WIRELESS_EXT >= 15 */ -static inline void ieee80211_michael_mic_failure(struct net_device *dev, - struct ieee80211_hdr *hdr, - int keyidx) -{ -} -#endif /* WIRELESS_EXT >= 15 */ static int ieee80211_michael_mic_verify(struct sk_buff *skb, int keyidx, int hdr_len, void *priv) @@ -547,8 +586,8 @@ static int ieee80211_michael_mic_verify(struct sk_buff *skb, int keyidx, skb->data + hdr_len, skb->len - 8 - hdr_len, mic)) return -1; if (memcmp(mic, skb->data + skb->len - 8, 8) != 0) { - struct ieee80211_hdr *hdr; - hdr = (struct ieee80211_hdr *)skb->data; + struct ieee80211_hdr_4addr *hdr; + hdr = (struct ieee80211_hdr_4addr *)skb->data; printk(KERN_DEBUG "%s: Michael MIC verification failed for " "MSDU from " MAC_FMT " keyidx=%d\n", skb->dev ? skb->dev->name : "N/A", MAC_ARG(hdr->addr2), @@ -654,19 +693,22 @@ static char *ieee80211_tkip_print_stats(char *p, void *priv) } static struct ieee80211_crypto_ops ieee80211_crypt_tkip = { - .name = "TKIP", - .init = ieee80211_tkip_init, - .deinit = ieee80211_tkip_deinit, - .encrypt_mpdu = ieee80211_tkip_encrypt, - .decrypt_mpdu = ieee80211_tkip_decrypt, - .encrypt_msdu = ieee80211_michael_mic_add, - .decrypt_msdu = ieee80211_michael_mic_verify, - .set_key = ieee80211_tkip_set_key, - .get_key = ieee80211_tkip_get_key, - .print_stats = ieee80211_tkip_print_stats, - .extra_prefix_len = 4 + 4, /* IV + ExtIV */ - .extra_postfix_len = 8 + 4, /* MIC + ICV */ - .owner = THIS_MODULE, + .name = "TKIP", + .init = ieee80211_tkip_init, + .deinit = ieee80211_tkip_deinit, + .encrypt_mpdu = ieee80211_tkip_encrypt, + .decrypt_mpdu = ieee80211_tkip_decrypt, + .encrypt_msdu = ieee80211_michael_mic_add, + .decrypt_msdu = ieee80211_michael_mic_verify, + .set_key = ieee80211_tkip_set_key, + .get_key = ieee80211_tkip_get_key, + .print_stats = ieee80211_tkip_print_stats, + .extra_mpdu_prefix_len = 4 + 4, /* IV + ExtIV */ + .extra_mpdu_postfix_len = 4, /* ICV */ + .extra_msdu_postfix_len = 8, /* MIC */ + .get_flags = ieee80211_tkip_get_flags, + .set_flags = ieee80211_tkip_set_flags, + .owner = THIS_MODULE, }; static int __init ieee80211_crypto_tkip_init(void) diff --git a/net/ieee80211/ieee80211_crypt_wep.c b/net/ieee80211/ieee80211_crypt_wep.c index b4d2514a0902..7c08ed2f2628 100644 --- a/net/ieee80211/ieee80211_crypt_wep.c +++ b/net/ieee80211/ieee80211_crypt_wep.c @@ -229,19 +229,19 @@ static char *prism2_wep_print_stats(char *p, void *priv) } static struct ieee80211_crypto_ops ieee80211_crypt_wep = { - .name = "WEP", - .init = prism2_wep_init, - .deinit = prism2_wep_deinit, - .encrypt_mpdu = prism2_wep_encrypt, - .decrypt_mpdu = prism2_wep_decrypt, - .encrypt_msdu = NULL, - .decrypt_msdu = NULL, - .set_key = prism2_wep_set_key, - .get_key = prism2_wep_get_key, - .print_stats = prism2_wep_print_stats, - .extra_prefix_len = 4, /* IV */ - .extra_postfix_len = 4, /* ICV */ - .owner = THIS_MODULE, + .name = "WEP", + .init = prism2_wep_init, + .deinit = prism2_wep_deinit, + .encrypt_mpdu = prism2_wep_encrypt, + .decrypt_mpdu = prism2_wep_decrypt, + .encrypt_msdu = NULL, + .decrypt_msdu = NULL, + .set_key = prism2_wep_set_key, + .get_key = prism2_wep_get_key, + .print_stats = prism2_wep_print_stats, + .extra_mpdu_prefix_len = 4, /* IV */ + .extra_mpdu_postfix_len = 4, /* ICV */ + .owner = THIS_MODULE, }; static int __init ieee80211_crypto_wep_init(void) diff --git a/net/ieee80211/ieee80211_geo.c b/net/ieee80211/ieee80211_geo.c new file mode 100644 index 000000000000..c4b54ef8f6d5 --- /dev/null +++ b/net/ieee80211/ieee80211_geo.c @@ -0,0 +1,141 @@ +/****************************************************************************** + + Copyright(c) 2005 Intel Corporation. All rights reserved. + + This program is free software; you can redistribute it and/or modify it + under the terms of version 2 of the GNU General Public License as + published by the Free Software Foundation. + + This program is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + more details. + + You should have received a copy of the GNU General Public License along with + this program; if not, write to the Free Software Foundation, Inc., 59 + Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + The full GNU General Public License is included in this distribution in the + file called LICENSE. + + Contact Information: + James P. Ketrenos <ipw2100-admin@linux.intel.com> + Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + +******************************************************************************/ +#include <linux/compiler.h> +#include <linux/config.h> +#include <linux/errno.h> +#include <linux/if_arp.h> +#include <linux/in6.h> +#include <linux/in.h> +#include <linux/ip.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/proc_fs.h> +#include <linux/skbuff.h> +#include <linux/slab.h> +#include <linux/tcp.h> +#include <linux/types.h> +#include <linux/version.h> +#include <linux/wireless.h> +#include <linux/etherdevice.h> +#include <asm/uaccess.h> + +#include <net/ieee80211.h> + +int ieee80211_is_valid_channel(struct ieee80211_device *ieee, u8 channel) +{ + int i; + + /* Driver needs to initialize the geography map before using + * these helper functions */ + BUG_ON(ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0); + + if (ieee->freq_band & IEEE80211_24GHZ_BAND) + for (i = 0; i < ieee->geo.bg_channels; i++) + /* NOTE: If G mode is currently supported but + * this is a B only channel, we don't see it + * as valid. */ + if ((ieee->geo.bg[i].channel == channel) && + (!(ieee->mode & IEEE_G) || + !(ieee->geo.bg[i].flags & IEEE80211_CH_B_ONLY))) + return IEEE80211_24GHZ_BAND; + + if (ieee->freq_band & IEEE80211_52GHZ_BAND) + for (i = 0; i < ieee->geo.a_channels; i++) + if (ieee->geo.a[i].channel == channel) + return IEEE80211_52GHZ_BAND; + + return 0; +} + +int ieee80211_channel_to_index(struct ieee80211_device *ieee, u8 channel) +{ + int i; + + /* Driver needs to initialize the geography map before using + * these helper functions */ + BUG_ON(ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0); + + if (ieee->freq_band & IEEE80211_24GHZ_BAND) + for (i = 0; i < ieee->geo.bg_channels; i++) + if (ieee->geo.bg[i].channel == channel) + return i; + + if (ieee->freq_band & IEEE80211_52GHZ_BAND) + for (i = 0; i < ieee->geo.a_channels; i++) + if (ieee->geo.a[i].channel == channel) + return i; + + return -1; +} + +u8 ieee80211_freq_to_channel(struct ieee80211_device * ieee, u32 freq) +{ + int i; + + /* Driver needs to initialize the geography map before using + * these helper functions */ + BUG_ON(ieee->geo.bg_channels == 0 && ieee->geo.a_channels == 0); + + freq /= 100000; + + if (ieee->freq_band & IEEE80211_24GHZ_BAND) + for (i = 0; i < ieee->geo.bg_channels; i++) + if (ieee->geo.bg[i].freq == freq) + return ieee->geo.bg[i].channel; + + if (ieee->freq_band & IEEE80211_52GHZ_BAND) + for (i = 0; i < ieee->geo.a_channels; i++) + if (ieee->geo.a[i].freq == freq) + return ieee->geo.a[i].channel; + + return 0; +} + +int ieee80211_set_geo(struct ieee80211_device *ieee, + const struct ieee80211_geo *geo) +{ + memcpy(ieee->geo.name, geo->name, 3); + ieee->geo.name[3] = '\0'; + ieee->geo.bg_channels = geo->bg_channels; + ieee->geo.a_channels = geo->a_channels; + memcpy(ieee->geo.bg, geo->bg, geo->bg_channels * + sizeof(struct ieee80211_channel)); + memcpy(ieee->geo.a, geo->a, ieee->geo.a_channels * + sizeof(struct ieee80211_channel)); + return 0; +} + +const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device *ieee) +{ + return &ieee->geo; +} + +EXPORT_SYMBOL(ieee80211_is_valid_channel); +EXPORT_SYMBOL(ieee80211_freq_to_channel); +EXPORT_SYMBOL(ieee80211_channel_to_index); +EXPORT_SYMBOL(ieee80211_set_geo); +EXPORT_SYMBOL(ieee80211_get_geo); diff --git a/net/ieee80211/ieee80211_module.c b/net/ieee80211/ieee80211_module.c index 6059e9e37123..f66d792cd204 100644 --- a/net/ieee80211/ieee80211_module.c +++ b/net/ieee80211/ieee80211_module.c @@ -1,6 +1,6 @@ /******************************************************************************* - Copyright(c) 2004 Intel Corporation. All rights reserved. + Copyright(c) 2004-2005 Intel Corporation. All rights reserved. Portions of this file are based on the WEP enablement code provided by the Host AP project hostap-drivers v0.1.3 @@ -53,12 +53,15 @@ #include <net/ieee80211.h> -MODULE_DESCRIPTION("802.11 data/management/control stack"); -MODULE_AUTHOR - ("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>"); -MODULE_LICENSE("GPL"); +#define DRV_DESCRIPTION "802.11 data/management/control stack" +#define DRV_NAME "ieee80211" +#define DRV_VERSION IEEE80211_VERSION +#define DRV_COPYRIGHT "Copyright (C) 2004-2005 Intel Corporation <jketreno@linux.intel.com>" -#define DRV_NAME "ieee80211" +MODULE_VERSION(DRV_VERSION); +MODULE_DESCRIPTION(DRV_DESCRIPTION); +MODULE_AUTHOR(DRV_COPYRIGHT); +MODULE_LICENSE("GPL"); static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee) { @@ -126,26 +129,34 @@ struct net_device *alloc_ieee80211(int sizeof_priv) /* Default fragmentation threshold is maximum payload size */ ieee->fts = DEFAULT_FTS; + ieee->rts = DEFAULT_FTS; ieee->scan_age = DEFAULT_MAX_SCAN_AGE; ieee->open_wep = 1; /* Default to enabling full open WEP with host based encrypt/decrypt */ ieee->host_encrypt = 1; ieee->host_decrypt = 1; + ieee->host_mc_decrypt = 1; + + /* Host fragementation in Open mode. Default is enabled. + * Note: host fragmentation is always enabled if host encryption + * is enabled. For cards can do hardware encryption, they must do + * hardware fragmentation as well. So we don't need a variable + * like host_enc_frag. */ + ieee->host_open_frag = 1; ieee->ieee802_1x = 1; /* Default to supporting 802.1x */ INIT_LIST_HEAD(&ieee->crypt_deinit_list); init_timer(&ieee->crypt_deinit_timer); ieee->crypt_deinit_timer.data = (unsigned long)ieee; ieee->crypt_deinit_timer.function = ieee80211_crypt_deinit_handler; + ieee->crypt_quiesced = 0; spin_lock_init(&ieee->lock); ieee->wpa_enabled = 0; - ieee->tkip_countermeasures = 0; ieee->drop_unencrypted = 0; ieee->privacy_invoked = 0; - ieee->ieee802_1x = 1; return dev; @@ -161,6 +172,7 @@ void free_ieee80211(struct net_device *dev) int i; + ieee80211_crypt_quiescing(ieee); del_timer_sync(&ieee->crypt_deinit_timer); ieee80211_crypt_deinit_entries(ieee, 1); @@ -195,38 +207,26 @@ static int show_debug_level(char *page, char **start, off_t offset, static int store_debug_level(struct file *file, const char __user * buffer, unsigned long count, void *data) { - char buf[] = "0x00000000"; - char *p = (char *)buf; + char buf[] = "0x00000000\n"; + unsigned long len = min((unsigned long)sizeof(buf) - 1, count); unsigned long val; - if (count > sizeof(buf) - 1) - count = sizeof(buf) - 1; - - if (copy_from_user(buf, buffer, count)) + if (copy_from_user(buf, buffer, len)) return count; - buf[count] = 0; - /* - * what a FPOS... What, sscanf(buf, "%i", &val) would be too - * scary? - */ - if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') { - p++; - if (p[0] == 'x' || p[0] == 'X') - p++; - val = simple_strtoul(p, &p, 16); - } else - val = simple_strtoul(p, &p, 10); - if (p == buf) + buf[len] = 0; + if (sscanf(buf, "%li", &val) != 1) printk(KERN_INFO DRV_NAME ": %s is not in hex or decimal form.\n", buf); else ieee80211_debug_level = val; - return strlen(buf); + return strnlen(buf, len); } +#endif /* CONFIG_IEEE80211_DEBUG */ static int __init ieee80211_init(void) { +#ifdef CONFIG_IEEE80211_DEBUG struct proc_dir_entry *e; ieee80211_debug_level = debug; @@ -246,26 +246,33 @@ static int __init ieee80211_init(void) e->read_proc = show_debug_level; e->write_proc = store_debug_level; e->data = NULL; +#endif /* CONFIG_IEEE80211_DEBUG */ + + printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n"); + printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n"); return 0; } static void __exit ieee80211_exit(void) { +#ifdef CONFIG_IEEE80211_DEBUG if (ieee80211_proc) { remove_proc_entry("debug_level", ieee80211_proc); remove_proc_entry(DRV_NAME, proc_net); ieee80211_proc = NULL; } +#endif /* CONFIG_IEEE80211_DEBUG */ } +#ifdef CONFIG_IEEE80211_DEBUG #include <linux/moduleparam.h> module_param(debug, int, 0444); MODULE_PARM_DESC(debug, "debug output mask"); +#endif /* CONFIG_IEEE80211_DEBUG */ module_exit(ieee80211_exit); module_init(ieee80211_init); -#endif const char *escape_essid(const char *essid, u8 essid_len) { diff --git a/net/ieee80211/ieee80211_rx.c b/net/ieee80211/ieee80211_rx.c index f7dcd854139e..ce694cf5c160 100644 --- a/net/ieee80211/ieee80211_rx.c +++ b/net/ieee80211/ieee80211_rx.c @@ -5,7 +5,7 @@ * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen * <jkmaline@cc.hut.fi> * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> - * Copyright (c) 2004, Intel Corporation + * Copyright (c) 2004-2005, Intel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -87,7 +87,7 @@ static struct ieee80211_frag_entry *ieee80211_frag_cache_find(struct /* Called only as a tasklet (software IRQ) */ static struct sk_buff *ieee80211_frag_cache_get(struct ieee80211_device *ieee, - struct ieee80211_hdr *hdr) + struct ieee80211_hdr_4addr *hdr) { struct sk_buff *skb = NULL; u16 sc; @@ -101,7 +101,7 @@ static struct sk_buff *ieee80211_frag_cache_get(struct ieee80211_device *ieee, if (frag == 0) { /* Reserve enough space to fit maximum frame length */ skb = dev_alloc_skb(ieee->dev->mtu + - sizeof(struct ieee80211_hdr) + + sizeof(struct ieee80211_hdr_4addr) + 8 /* LLC */ + 2 /* alignment */ + 8 /* WEP */ + ETH_ALEN /* WDS */ ); @@ -138,7 +138,7 @@ static struct sk_buff *ieee80211_frag_cache_get(struct ieee80211_device *ieee, /* Called only as a tasklet (software IRQ) */ static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee, - struct ieee80211_hdr *hdr) + struct ieee80211_hdr_4addr *hdr) { u16 sc; unsigned int seq; @@ -176,7 +176,7 @@ ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb, ieee->dev->name); return 0; /* - hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr *) + hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr_4addr *) skb->data);*/ } @@ -232,13 +232,13 @@ static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee, { struct net_device *dev = ieee->dev; u16 fc, ethertype; - struct ieee80211_hdr *hdr; + struct ieee80211_hdr_3addr *hdr; u8 *pos; if (skb->len < 24) return 0; - hdr = (struct ieee80211_hdr *)skb->data; + hdr = (struct ieee80211_hdr_3addr *)skb->data; fc = le16_to_cpu(hdr->frame_ctl); /* check that the frame is unicast frame to us */ @@ -271,26 +271,15 @@ static inline int ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb, struct ieee80211_crypt_data *crypt) { - struct ieee80211_hdr *hdr; + struct ieee80211_hdr_3addr *hdr; int res, hdrlen; if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL) return 0; - hdr = (struct ieee80211_hdr *)skb->data; + hdr = (struct ieee80211_hdr_3addr *)skb->data; hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); -#ifdef CONFIG_IEEE80211_CRYPT_TKIP - if (ieee->tkip_countermeasures && strcmp(crypt->ops->name, "TKIP") == 0) { - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: TKIP countermeasures: dropped " - "received packet from " MAC_FMT "\n", - ieee->dev->name, MAC_ARG(hdr->addr2)); - } - return -1; - } -#endif - atomic_inc(&crypt->refcnt); res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv); atomic_dec(&crypt->refcnt); @@ -314,13 +303,13 @@ ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device *ieee, struct sk_buff *skb, int keyidx, struct ieee80211_crypt_data *crypt) { - struct ieee80211_hdr *hdr; + struct ieee80211_hdr_3addr *hdr; int res, hdrlen; if (crypt == NULL || crypt->ops->decrypt_msdu == NULL) return 0; - hdr = (struct ieee80211_hdr *)skb->data; + hdr = (struct ieee80211_hdr_3addr *)skb->data; hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl)); atomic_inc(&crypt->refcnt); @@ -343,7 +332,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, struct ieee80211_rx_stats *rx_stats) { struct net_device *dev = ieee->dev; - struct ieee80211_hdr *hdr; + struct ieee80211_hdr_4addr *hdr; size_t hdrlen; u16 fc, type, stype, sc; struct net_device_stats *stats; @@ -363,7 +352,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, struct ieee80211_crypt_data *crypt = NULL; int keyidx = 0; - hdr = (struct ieee80211_hdr *)skb->data; + hdr = (struct ieee80211_hdr_4addr *)skb->data; stats = &ieee->stats; if (skb->len < 10) { @@ -378,35 +367,51 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, frag = WLAN_GET_SEQ_FRAG(sc); hdrlen = ieee80211_get_hdrlen(fc); -#ifdef NOT_YET -#if WIRELESS_EXT > 15 /* Put this code here so that we avoid duplicating it in all * Rx paths. - Jean II */ #ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */ /* If spy monitoring on */ - if (iface->spy_data.spy_number > 0) { + if (ieee->spy_data.spy_number > 0) { struct iw_quality wstats; - wstats.level = rx_stats->signal; - wstats.noise = rx_stats->noise; - wstats.updated = 6; /* No qual value */ + + wstats.updated = 0; + if (rx_stats->mask & IEEE80211_STATMASK_RSSI) { + wstats.level = rx_stats->rssi; + wstats.updated |= IW_QUAL_LEVEL_UPDATED; + } else + wstats.updated |= IW_QUAL_LEVEL_INVALID; + + if (rx_stats->mask & IEEE80211_STATMASK_NOISE) { + wstats.noise = rx_stats->noise; + wstats.updated |= IW_QUAL_NOISE_UPDATED; + } else + wstats.updated |= IW_QUAL_NOISE_INVALID; + + if (rx_stats->mask & IEEE80211_STATMASK_SIGNAL) { + wstats.qual = rx_stats->signal; + wstats.updated |= IW_QUAL_QUAL_UPDATED; + } else + wstats.updated |= IW_QUAL_QUAL_INVALID; + /* Update spy records */ - wireless_spy_update(dev, hdr->addr2, &wstats); + wireless_spy_update(ieee->dev, hdr->addr2, &wstats); } #endif /* IW_WIRELESS_SPY */ -#endif /* WIRELESS_EXT > 15 */ + +#ifdef NOT_YET hostap_update_rx_stats(local->ap, hdr, rx_stats); #endif -#if WIRELESS_EXT > 15 if (ieee->iw_mode == IW_MODE_MONITOR) { ieee80211_monitor_rx(ieee, skb, rx_stats); stats->rx_packets++; stats->rx_bytes += skb->len; return 1; } -#endif - if (ieee->host_decrypt) { + if ((is_multicast_ether_addr(hdr->addr1) || + is_broadcast_ether_addr(hdr->addr2)) ? ieee->host_mc_decrypt : + ieee->host_decrypt) { int idx = 0; if (skb->len >= hdrlen + 3) idx = skb->data[hdrlen + 3] >> 6; @@ -531,6 +536,9 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, /* Nullfunc frames may have PS-bit set, so they must be passed to * hostap_handle_sta_rx() before being dropped here. */ + + stype &= ~IEEE80211_STYPE_QOS_DATA; + if (stype != IEEE80211_STYPE_DATA && stype != IEEE80211_STYPE_DATA_CFACK && stype != IEEE80211_STYPE_DATA_CFPOLL && @@ -549,7 +557,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0) goto rx_dropped; - hdr = (struct ieee80211_hdr *)skb->data; + hdr = (struct ieee80211_hdr_4addr *)skb->data; /* skb: hdr + (possibly fragmented) plaintext payload */ // PR: FIXME: hostap has additional conditions in the "if" below: @@ -603,7 +611,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, /* this was the last fragment and the frame will be * delivered, so remove skb from fragment cache */ skb = frag_skb; - hdr = (struct ieee80211_hdr *)skb->data; + hdr = (struct ieee80211_hdr_4addr *)skb->data; ieee80211_frag_cache_invalidate(ieee, hdr); } @@ -613,7 +621,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) goto rx_dropped; - hdr = (struct ieee80211_hdr *)skb->data; + hdr = (struct ieee80211_hdr_4addr *)skb->data; if (crypt && !(fc & IEEE80211_FCTL_PROTECTED) && !ieee->open_wep) { if ( /*ieee->ieee802_1x && */ ieee80211_is_eapol_frame(ieee, skb)) { @@ -755,69 +763,179 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb, #define MGMT_FRAME_FIXED_PART_LENGTH 0x24 -static inline int ieee80211_is_ofdm_rate(u8 rate) +static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 }; + +/* +* Make ther structure we read from the beacon packet has +* the right values +*/ +static int ieee80211_verify_qos_info(struct ieee80211_qos_information_element + *info_element, int sub_type) { - switch (rate & ~IEEE80211_BASIC_RATE_MASK) { - case IEEE80211_OFDM_RATE_6MB: - case IEEE80211_OFDM_RATE_9MB: - case IEEE80211_OFDM_RATE_12MB: - case IEEE80211_OFDM_RATE_18MB: - case IEEE80211_OFDM_RATE_24MB: - case IEEE80211_OFDM_RATE_36MB: - case IEEE80211_OFDM_RATE_48MB: - case IEEE80211_OFDM_RATE_54MB: - return 1; - } + + if (info_element->qui_subtype != sub_type) + return -1; + if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN)) + return -1; + if (info_element->qui_type != QOS_OUI_TYPE) + return -1; + if (info_element->version != QOS_VERSION_1) + return -1; + return 0; } -static inline int ieee80211_network_init(struct ieee80211_device *ieee, - struct ieee80211_probe_response - *beacon, - struct ieee80211_network *network, - struct ieee80211_rx_stats *stats) +/* + * Parse a QoS parameter element + */ +static int ieee80211_read_qos_param_element(struct ieee80211_qos_parameter_info + *element_param, struct ieee80211_info_element + *info_element) { -#ifdef CONFIG_IEEE80211_DEBUG - char rates_str[64]; - char *p; -#endif - struct ieee80211_info_element *info_element; - u16 left; - u8 i; + int ret = 0; + u16 size = sizeof(struct ieee80211_qos_parameter_info) - 2; - /* Pull out fixed field data */ - memcpy(network->bssid, beacon->header.addr3, ETH_ALEN); - network->capability = beacon->capability; - network->last_scanned = jiffies; - network->time_stamp[0] = beacon->time_stamp[0]; - network->time_stamp[1] = beacon->time_stamp[1]; - network->beacon_interval = beacon->beacon_interval; - /* Where to pull this? beacon->listen_interval; */ - network->listen_interval = 0x0A; - network->rates_len = network->rates_ex_len = 0; - network->last_associate = 0; - network->ssid_len = 0; - network->flags = 0; - network->atim_window = 0; + if ((info_element == NULL) || (element_param == NULL)) + return -1; - if (stats->freq == IEEE80211_52GHZ_BAND) { - /* for A band (No DS info) */ - network->channel = stats->received_channel; + if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) { + memcpy(element_param->info_element.qui, info_element->data, + info_element->len); + element_param->info_element.elementID = info_element->id; + element_param->info_element.length = info_element->len; } else - network->flags |= NETWORK_HAS_CCK; + ret = -1; + if (ret == 0) + ret = ieee80211_verify_qos_info(&element_param->info_element, + QOS_OUI_PARAM_SUB_TYPE); + return ret; +} - network->wpa_ie_len = 0; - network->rsn_ie_len = 0; +/* + * Parse a QoS information element + */ +static int ieee80211_read_qos_info_element(struct + ieee80211_qos_information_element + *element_info, struct ieee80211_info_element + *info_element) +{ + int ret = 0; + u16 size = sizeof(struct ieee80211_qos_information_element) - 2; + + if (element_info == NULL) + return -1; + if (info_element == NULL) + return -1; + + if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) { + memcpy(element_info->qui, info_element->data, + info_element->len); + element_info->elementID = info_element->id; + element_info->length = info_element->len; + } else + ret = -1; + + if (ret == 0) + ret = ieee80211_verify_qos_info(element_info, + QOS_OUI_INFO_SUB_TYPE); + return ret; +} + +/* + * Write QoS parameters from the ac parameters. + */ +static int ieee80211_qos_convert_ac_to_parameters(struct + ieee80211_qos_parameter_info + *param_elm, struct + ieee80211_qos_parameters + *qos_param) +{ + int rc = 0; + int i; + struct ieee80211_qos_ac_parameter *ac_params; + u32 txop; + u8 cw_min; + u8 cw_max; + + for (i = 0; i < QOS_QUEUE_NUM; i++) { + ac_params = &(param_elm->ac_params_record[i]); + + qos_param->aifs[i] = (ac_params->aci_aifsn) & 0x0F; + qos_param->aifs[i] -= (qos_param->aifs[i] < 2) ? 0 : 2; + + cw_min = ac_params->ecw_min_max & 0x0F; + qos_param->cw_min[i] = (u16) ((1 << cw_min) - 1); + + cw_max = (ac_params->ecw_min_max & 0xF0) >> 4; + qos_param->cw_max[i] = (u16) ((1 << cw_max) - 1); + + qos_param->flag[i] = + (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00; + + txop = le16_to_cpu(ac_params->tx_op_limit) * 32; + qos_param->tx_op_limit[i] = (u16) txop; + } + return rc; +} + +/* + * we have a generic data element which it may contain QoS information or + * parameters element. check the information element length to decide + * which type to read + */ +static int ieee80211_parse_qos_info_param_IE(struct ieee80211_info_element + *info_element, + struct ieee80211_network *network) +{ + int rc = 0; + struct ieee80211_qos_parameters *qos_param = NULL; + struct ieee80211_qos_information_element qos_info_element; + + rc = ieee80211_read_qos_info_element(&qos_info_element, info_element); + + if (rc == 0) { + network->qos_data.param_count = qos_info_element.ac_info & 0x0F; + network->flags |= NETWORK_HAS_QOS_INFORMATION; + } else { + struct ieee80211_qos_parameter_info param_element; + + rc = ieee80211_read_qos_param_element(¶m_element, + info_element); + if (rc == 0) { + qos_param = &(network->qos_data.parameters); + ieee80211_qos_convert_ac_to_parameters(¶m_element, + qos_param); + network->flags |= NETWORK_HAS_QOS_PARAMETERS; + network->qos_data.param_count = + param_element.info_element.ac_info & 0x0F; + } + } + + if (rc == 0) { + IEEE80211_DEBUG_QOS("QoS is supported\n"); + network->qos_data.supported = 1; + } + return rc; +} + +static int ieee80211_parse_info_param(struct ieee80211_info_element + *info_element, u16 length, + struct ieee80211_network *network) +{ + u8 i; +#ifdef CONFIG_IEEE80211_DEBUG + char rates_str[64]; + char *p; +#endif - info_element = &beacon->info_element; - left = stats->len - ((void *)info_element - (void *)beacon); - while (left >= sizeof(struct ieee80211_info_element_hdr)) { - if (sizeof(struct ieee80211_info_element_hdr) + - info_element->len > left) { - IEEE80211_DEBUG_SCAN - ("SCAN: parse failed: info_element->len + 2 > left : info_element->len+2=%Zd left=%d.\n", - info_element->len + - sizeof(struct ieee80211_info_element), left); + while (length >= sizeof(*info_element)) { + if (sizeof(*info_element) + info_element->len > length) { + IEEE80211_DEBUG_MGMT("Info elem: parse failed: " + "info_element->len + 2 > left : " + "info_element->len+2=%zd left=%d, id=%d.\n", + info_element->len + + sizeof(*info_element), + length, info_element->id); return 1; } @@ -837,7 +955,7 @@ static inline int ieee80211_network_init(struct ieee80211_device *ieee, memset(network->ssid + network->ssid_len, 0, IW_ESSID_MAX_SIZE - network->ssid_len); - IEEE80211_DEBUG_SCAN("MFIE_TYPE_SSID: '%s' len=%d.\n", + IEEE80211_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n", network->ssid, network->ssid_len); break; @@ -845,15 +963,14 @@ static inline int ieee80211_network_init(struct ieee80211_device *ieee, #ifdef CONFIG_IEEE80211_DEBUG p = rates_str; #endif - network->rates_len = - min(info_element->len, MAX_RATES_LENGTH); + network->rates_len = min(info_element->len, + MAX_RATES_LENGTH); for (i = 0; i < network->rates_len; i++) { network->rates[i] = info_element->data[i]; #ifdef CONFIG_IEEE80211_DEBUG - p += snprintf(p, - sizeof(rates_str) - (p - - rates_str), - "%02X ", network->rates[i]); + p += snprintf(p, sizeof(rates_str) - + (p - rates_str), "%02X ", + network->rates[i]); #endif if (ieee80211_is_ofdm_rate (info_element->data[i])) { @@ -865,7 +982,7 @@ static inline int ieee80211_network_init(struct ieee80211_device *ieee, } } - IEEE80211_DEBUG_SCAN("MFIE_TYPE_RATES: '%s' (%d)\n", + IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n", rates_str, network->rates_len); break; @@ -873,15 +990,14 @@ static inline int ieee80211_network_init(struct ieee80211_device *ieee, #ifdef CONFIG_IEEE80211_DEBUG p = rates_str; #endif - network->rates_ex_len = - min(info_element->len, MAX_RATES_EX_LENGTH); + network->rates_ex_len = min(info_element->len, + MAX_RATES_EX_LENGTH); for (i = 0; i < network->rates_ex_len; i++) { network->rates_ex[i] = info_element->data[i]; #ifdef CONFIG_IEEE80211_DEBUG - p += snprintf(p, - sizeof(rates_str) - (p - - rates_str), - "%02X ", network->rates[i]); + p += snprintf(p, sizeof(rates_str) - + (p - rates_str), "%02X ", + network->rates[i]); #endif if (ieee80211_is_ofdm_rate (info_element->data[i])) { @@ -893,40 +1009,51 @@ static inline int ieee80211_network_init(struct ieee80211_device *ieee, } } - IEEE80211_DEBUG_SCAN("MFIE_TYPE_RATES_EX: '%s' (%d)\n", + IEEE80211_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n", rates_str, network->rates_ex_len); break; case MFIE_TYPE_DS_SET: - IEEE80211_DEBUG_SCAN("MFIE_TYPE_DS_SET: %d\n", + IEEE80211_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n", info_element->data[0]); - if (stats->freq == IEEE80211_24GHZ_BAND) - network->channel = info_element->data[0]; + network->channel = info_element->data[0]; break; case MFIE_TYPE_FH_SET: - IEEE80211_DEBUG_SCAN("MFIE_TYPE_FH_SET: ignored\n"); + IEEE80211_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n"); break; case MFIE_TYPE_CF_SET: - IEEE80211_DEBUG_SCAN("MFIE_TYPE_CF_SET: ignored\n"); + IEEE80211_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n"); break; case MFIE_TYPE_TIM: - IEEE80211_DEBUG_SCAN("MFIE_TYPE_TIM: ignored\n"); + IEEE80211_DEBUG_MGMT("MFIE_TYPE_TIM: ignored\n"); + break; + + case MFIE_TYPE_ERP_INFO: + network->erp_value = info_element->data[0]; + IEEE80211_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n", + network->erp_value); break; case MFIE_TYPE_IBSS_SET: - IEEE80211_DEBUG_SCAN("MFIE_TYPE_IBSS_SET: ignored\n"); + network->atim_window = info_element->data[0]; + IEEE80211_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n", + network->atim_window); break; case MFIE_TYPE_CHALLENGE: - IEEE80211_DEBUG_SCAN("MFIE_TYPE_CHALLENGE: ignored\n"); + IEEE80211_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n"); break; case MFIE_TYPE_GENERIC: - IEEE80211_DEBUG_SCAN("MFIE_TYPE_GENERIC: %d bytes\n", + IEEE80211_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n", info_element->len); + if (!ieee80211_parse_qos_info_param_IE(info_element, + network)) + break; + if (info_element->len >= 4 && info_element->data[0] == 0x00 && info_element->data[1] == 0x50 && @@ -940,7 +1067,7 @@ static inline int ieee80211_network_init(struct ieee80211_device *ieee, break; case MFIE_TYPE_RSN: - IEEE80211_DEBUG_SCAN("MFIE_TYPE_RSN: %d bytes\n", + IEEE80211_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n", info_element->len); network->rsn_ie_len = min(info_element->len + 2, MAX_WPA_IE_LEN); @@ -948,18 +1075,127 @@ static inline int ieee80211_network_init(struct ieee80211_device *ieee, network->rsn_ie_len); break; + case MFIE_TYPE_QOS_PARAMETER: + printk(KERN_ERR + "QoS Error need to parse QOS_PARAMETER IE\n"); + break; + default: - IEEE80211_DEBUG_SCAN("unsupported IE %d\n", + IEEE80211_DEBUG_MGMT("unsupported IE %d\n", info_element->id); break; } - left -= sizeof(struct ieee80211_info_element_hdr) + - info_element->len; - info_element = (struct ieee80211_info_element *) - &info_element->data[info_element->len]; + length -= sizeof(*info_element) + info_element->len; + info_element = + (struct ieee80211_info_element *)&info_element-> + data[info_element->len]; + } + + return 0; +} + +static int ieee80211_handle_assoc_resp(struct ieee80211_device *ieee, struct ieee80211_assoc_response + *frame, struct ieee80211_rx_stats *stats) +{ + struct ieee80211_network network_resp; + struct ieee80211_network *network = &network_resp; + struct net_device *dev = ieee->dev; + + network->flags = 0; + network->qos_data.active = 0; + network->qos_data.supported = 0; + network->qos_data.param_count = 0; + network->qos_data.old_param_count = 0; + + //network->atim_window = le16_to_cpu(frame->aid) & (0x3FFF); + network->atim_window = le16_to_cpu(frame->aid); + network->listen_interval = le16_to_cpu(frame->status); + memcpy(network->bssid, frame->header.addr3, ETH_ALEN); + network->capability = le16_to_cpu(frame->capability); + network->last_scanned = jiffies; + network->rates_len = network->rates_ex_len = 0; + network->last_associate = 0; + network->ssid_len = 0; + network->erp_value = + (network->capability & WLAN_CAPABILITY_IBSS) ? 0x3 : 0x0; + + if (stats->freq == IEEE80211_52GHZ_BAND) { + /* for A band (No DS info) */ + network->channel = stats->received_channel; + } else + network->flags |= NETWORK_HAS_CCK; + + network->wpa_ie_len = 0; + network->rsn_ie_len = 0; + + if (ieee80211_parse_info_param + (frame->info_element, stats->len - sizeof(*frame), network)) + return 1; + + network->mode = 0; + if (stats->freq == IEEE80211_52GHZ_BAND) + network->mode = IEEE_A; + else { + if (network->flags & NETWORK_HAS_OFDM) + network->mode |= IEEE_G; + if (network->flags & NETWORK_HAS_CCK) + network->mode |= IEEE_B; } + if (ieee80211_is_empty_essid(network->ssid, network->ssid_len)) + network->flags |= NETWORK_EMPTY_ESSID; + + memcpy(&network->stats, stats, sizeof(network->stats)); + + if (ieee->handle_assoc_response != NULL) + ieee->handle_assoc_response(dev, frame, network); + + return 0; +} + +/***************************************************/ + +static inline int ieee80211_network_init(struct ieee80211_device *ieee, struct ieee80211_probe_response + *beacon, + struct ieee80211_network *network, + struct ieee80211_rx_stats *stats) +{ + network->qos_data.active = 0; + network->qos_data.supported = 0; + network->qos_data.param_count = 0; + network->qos_data.old_param_count = 0; + + /* Pull out fixed field data */ + memcpy(network->bssid, beacon->header.addr3, ETH_ALEN); + network->capability = le16_to_cpu(beacon->capability); + network->last_scanned = jiffies; + network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]); + network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]); + network->beacon_interval = le16_to_cpu(beacon->beacon_interval); + /* Where to pull this? beacon->listen_interval; */ + network->listen_interval = 0x0A; + network->rates_len = network->rates_ex_len = 0; + network->last_associate = 0; + network->ssid_len = 0; + network->flags = 0; + network->atim_window = 0; + network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ? + 0x3 : 0x0; + + if (stats->freq == IEEE80211_52GHZ_BAND) { + /* for A band (No DS info) */ + network->channel = stats->received_channel; + } else + network->flags |= NETWORK_HAS_CCK; + + network->wpa_ie_len = 0; + network->rsn_ie_len = 0; + + if (ieee80211_parse_info_param + (beacon->info_element, stats->len - sizeof(*beacon), network)) + return 1; + network->mode = 0; if (stats->freq == IEEE80211_52GHZ_BAND) network->mode = IEEE_A; @@ -1002,6 +1238,9 @@ static inline int is_same_network(struct ieee80211_network *src, static inline void update_network(struct ieee80211_network *dst, struct ieee80211_network *src) { + int qos_active; + u8 old_param; + memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats)); dst->capability = src->capability; memcpy(dst->rates, src->rates, src->rates_len); @@ -1017,6 +1256,7 @@ static inline void update_network(struct ieee80211_network *dst, dst->beacon_interval = src->beacon_interval; dst->listen_interval = src->listen_interval; dst->atim_window = src->atim_window; + dst->erp_value = src->erp_value; memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len); dst->wpa_ie_len = src->wpa_ie_len; @@ -1024,22 +1264,48 @@ static inline void update_network(struct ieee80211_network *dst, dst->rsn_ie_len = src->rsn_ie_len; dst->last_scanned = jiffies; + qos_active = src->qos_data.active; + old_param = dst->qos_data.old_param_count; + if (dst->flags & NETWORK_HAS_QOS_MASK) + memcpy(&dst->qos_data, &src->qos_data, + sizeof(struct ieee80211_qos_data)); + else { + dst->qos_data.supported = src->qos_data.supported; + dst->qos_data.param_count = src->qos_data.param_count; + } + + if (dst->qos_data.supported == 1) { + if (dst->ssid_len) + IEEE80211_DEBUG_QOS + ("QoS the network %s is QoS supported\n", + dst->ssid); + else + IEEE80211_DEBUG_QOS + ("QoS the network is QoS supported\n"); + } + dst->qos_data.active = qos_active; + dst->qos_data.old_param_count = old_param; + /* dst->last_associate is not overwritten */ } +static inline int is_beacon(int fc) +{ + return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == IEEE80211_STYPE_BEACON); +} + static inline void ieee80211_process_probe_response(struct ieee80211_device - *ieee, - struct + *ieee, struct ieee80211_probe_response - *beacon, - struct ieee80211_rx_stats + *beacon, struct ieee80211_rx_stats *stats) { + struct net_device *dev = ieee->dev; struct ieee80211_network network; struct ieee80211_network *target; struct ieee80211_network *oldest = NULL; #ifdef CONFIG_IEEE80211_DEBUG - struct ieee80211_info_element *info_element = &beacon->info_element; + struct ieee80211_info_element *info_element = beacon->info_element; #endif unsigned long flags; @@ -1070,10 +1336,10 @@ static inline void ieee80211_process_probe_response(struct ieee80211_device escape_essid(info_element->data, info_element->len), MAC_ARG(beacon->header.addr3), - WLAN_FC_GET_STYPE(beacon->header. - frame_ctl) == - IEEE80211_STYPE_PROBE_RESP ? - "PROBE RESPONSE" : "BEACON"); + is_beacon(le16_to_cpu + (beacon->header. + frame_ctl)) ? + "BEACON" : "PROBE RESPONSE"); return; } @@ -1122,10 +1388,10 @@ static inline void ieee80211_process_probe_response(struct ieee80211_device escape_essid(network.ssid, network.ssid_len), MAC_ARG(network.bssid), - WLAN_FC_GET_STYPE(beacon->header. - frame_ctl) == - IEEE80211_STYPE_PROBE_RESP ? - "PROBE RESPONSE" : "BEACON"); + is_beacon(le16_to_cpu + (beacon->header. + frame_ctl)) ? + "BEACON" : "PROBE RESPONSE"); #endif memcpy(target, &network, sizeof(*target)); list_add_tail(&target->list, &ieee->network_list); @@ -1134,34 +1400,60 @@ static inline void ieee80211_process_probe_response(struct ieee80211_device escape_essid(target->ssid, target->ssid_len), MAC_ARG(target->bssid), - WLAN_FC_GET_STYPE(beacon->header. - frame_ctl) == - IEEE80211_STYPE_PROBE_RESP ? - "PROBE RESPONSE" : "BEACON"); + is_beacon(le16_to_cpu + (beacon->header. + frame_ctl)) ? + "BEACON" : "PROBE RESPONSE"); update_network(target, &network); } spin_unlock_irqrestore(&ieee->lock, flags); + + if (is_beacon(le16_to_cpu(beacon->header.frame_ctl))) { + if (ieee->handle_beacon != NULL) + ieee->handle_beacon(dev, beacon, &network); + } else { + if (ieee->handle_probe_response != NULL) + ieee->handle_probe_response(dev, beacon, &network); + } } void ieee80211_rx_mgt(struct ieee80211_device *ieee, - struct ieee80211_hdr *header, + struct ieee80211_hdr_4addr *header, struct ieee80211_rx_stats *stats) { - switch (WLAN_FC_GET_STYPE(header->frame_ctl)) { + switch (WLAN_FC_GET_STYPE(le16_to_cpu(header->frame_ctl))) { case IEEE80211_STYPE_ASSOC_RESP: IEEE80211_DEBUG_MGMT("received ASSOCIATION RESPONSE (%d)\n", - WLAN_FC_GET_STYPE(header->frame_ctl)); + WLAN_FC_GET_STYPE(le16_to_cpu + (header->frame_ctl))); + ieee80211_handle_assoc_resp(ieee, + (struct ieee80211_assoc_response *) + header, stats); break; case IEEE80211_STYPE_REASSOC_RESP: IEEE80211_DEBUG_MGMT("received REASSOCIATION RESPONSE (%d)\n", - WLAN_FC_GET_STYPE(header->frame_ctl)); + WLAN_FC_GET_STYPE(le16_to_cpu + (header->frame_ctl))); + break; + + case IEEE80211_STYPE_PROBE_REQ: + IEEE80211_DEBUG_MGMT("recieved auth (%d)\n", + WLAN_FC_GET_STYPE(le16_to_cpu + (header->frame_ctl))); + + if (ieee->handle_probe_request != NULL) + ieee->handle_probe_request(ieee->dev, + (struct + ieee80211_probe_request *) + header, stats); break; case IEEE80211_STYPE_PROBE_RESP: IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n", - WLAN_FC_GET_STYPE(header->frame_ctl)); + WLAN_FC_GET_STYPE(le16_to_cpu + (header->frame_ctl))); IEEE80211_DEBUG_SCAN("Probe response\n"); ieee80211_process_probe_response(ieee, (struct @@ -1171,20 +1463,46 @@ void ieee80211_rx_mgt(struct ieee80211_device *ieee, case IEEE80211_STYPE_BEACON: IEEE80211_DEBUG_MGMT("received BEACON (%d)\n", - WLAN_FC_GET_STYPE(header->frame_ctl)); + WLAN_FC_GET_STYPE(le16_to_cpu + (header->frame_ctl))); IEEE80211_DEBUG_SCAN("Beacon\n"); ieee80211_process_probe_response(ieee, (struct ieee80211_probe_response *) header, stats); break; + case IEEE80211_STYPE_AUTH: + IEEE80211_DEBUG_MGMT("recieved auth (%d)\n", + WLAN_FC_GET_STYPE(le16_to_cpu + (header->frame_ctl))); + + if (ieee->handle_auth != NULL) + ieee->handle_auth(ieee->dev, + (struct ieee80211_auth *)header); + break; + + case IEEE80211_STYPE_DISASSOC: + if (ieee->handle_disassoc != NULL) + ieee->handle_disassoc(ieee->dev, + (struct ieee80211_disassoc *) + header); + break; + + case IEEE80211_STYPE_DEAUTH: + printk("DEAUTH from AP\n"); + if (ieee->handle_deauth != NULL) + ieee->handle_deauth(ieee->dev, (struct ieee80211_auth *) + header); + break; default: IEEE80211_DEBUG_MGMT("received UNKNOWN (%d)\n", - WLAN_FC_GET_STYPE(header->frame_ctl)); + WLAN_FC_GET_STYPE(le16_to_cpu + (header->frame_ctl))); IEEE80211_WARNING("%s: Unknown management packet: %d\n", ieee->dev->name, - WLAN_FC_GET_STYPE(header->frame_ctl)); + WLAN_FC_GET_STYPE(le16_to_cpu + (header->frame_ctl))); break; } } diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c index eed07bbbe6b6..95ccbadbf55b 100644 --- a/net/ieee80211/ieee80211_tx.c +++ b/net/ieee80211/ieee80211_tx.c @@ -1,6 +1,6 @@ /****************************************************************************** - Copyright(c) 2003 - 2004 Intel Corporation. All rights reserved. + Copyright(c) 2003 - 2005 Intel Corporation. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as @@ -128,7 +128,7 @@ payload of each frame is reduced to 492 bytes. static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 }; static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 }; -static inline int ieee80211_put_snap(u8 * data, u16 h_proto) +static inline int ieee80211_copy_snap(u8 * data, u16 h_proto) { struct ieee80211_snap_hdr *snap; u8 *oui; @@ -157,31 +157,14 @@ static inline int ieee80211_encrypt_fragment(struct ieee80211_device *ieee, struct ieee80211_crypt_data *crypt = ieee->crypt[ieee->tx_keyidx]; int res; -#ifdef CONFIG_IEEE80211_CRYPT_TKIP - struct ieee80211_hdr *header; - - if (ieee->tkip_countermeasures && - crypt && crypt->ops && strcmp(crypt->ops->name, "TKIP") == 0) { - header = (struct ieee80211_hdr *)frag->data; - if (net_ratelimit()) { - printk(KERN_DEBUG "%s: TKIP countermeasures: dropped " - "TX packet to " MAC_FMT "\n", - ieee->dev->name, MAC_ARG(header->addr1)); - } + if (crypt == NULL) return -1; - } -#endif + /* To encrypt, frame format is: * IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */ - - // PR: FIXME: Copied from hostap. Check fragmentation/MSDU/MPDU encryption. - /* Host-based IEEE 802.11 fragmentation for TX is not yet supported, so - * call both MSDU and MPDU encryption functions from here. */ atomic_inc(&crypt->refcnt); res = 0; - if (crypt->ops->encrypt_msdu) - res = crypt->ops->encrypt_msdu(frag, hdr_len, crypt->priv); - if (res == 0 && crypt->ops->encrypt_mpdu) + if (crypt->ops && crypt->ops->encrypt_mpdu) res = crypt->ops->encrypt_mpdu(frag, hdr_len, crypt->priv); atomic_dec(&crypt->refcnt); @@ -207,7 +190,7 @@ void ieee80211_txb_free(struct ieee80211_txb *txb) } static struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size, - gfp_t gfp_mask) + int headroom, gfp_t gfp_mask) { struct ieee80211_txb *txb; int i; @@ -221,11 +204,13 @@ static struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size, txb->frag_size = txb_size; for (i = 0; i < nr_frags; i++) { - txb->fragments[i] = dev_alloc_skb(txb_size); + txb->fragments[i] = __dev_alloc_skb(txb_size + headroom, + gfp_mask); if (unlikely(!txb->fragments[i])) { i--; break; } + skb_reserve(txb->fragments[i], headroom); } if (unlikely(i != nr_frags)) { while (i >= 0) @@ -236,25 +221,31 @@ static struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size, return txb; } -/* SKBs are added to the ieee->tx_queue. */ +/* Incoming skb is converted to a txb which consists of + * a block of 802.11 fragment packets (stored as skbs) */ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) { struct ieee80211_device *ieee = netdev_priv(dev); struct ieee80211_txb *txb = NULL; - struct ieee80211_hdr *frag_hdr; - int i, bytes_per_frag, nr_frags, bytes_last_frag, frag_size; + struct ieee80211_hdr_3addr *frag_hdr; + int i, bytes_per_frag, nr_frags, bytes_last_frag, frag_size, + rts_required; unsigned long flags; struct net_device_stats *stats = &ieee->stats; - int ether_type, encrypt; + int ether_type, encrypt, host_encrypt, host_encrypt_msdu, host_build_iv; int bytes, fc, hdr_len; struct sk_buff *skb_frag; - struct ieee80211_hdr header = { /* Ensure zero initialized */ + struct ieee80211_hdr_3addr header = { /* Ensure zero initialized */ .duration_id = 0, .seq_ctl = 0 }; u8 dest[ETH_ALEN], src[ETH_ALEN]; - struct ieee80211_crypt_data *crypt; + int priority = skb->priority; + int snapped = 0; + + if (ieee->is_queue_full && (*ieee->is_queue_full) (dev, priority)) + return NETDEV_TX_BUSY; spin_lock_irqsave(&ieee->lock, flags); @@ -276,7 +267,11 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) crypt = ieee->crypt[ieee->tx_keyidx]; encrypt = !(ether_type == ETH_P_PAE && ieee->ieee802_1x) && - ieee->host_encrypt && crypt && crypt->ops; + ieee->sec.encrypt; + + host_encrypt = ieee->host_encrypt && encrypt && crypt; + host_encrypt_msdu = ieee->host_encrypt_msdu && encrypt && crypt; + host_build_iv = ieee->host_build_iv && encrypt && crypt; if (!encrypt && ieee->ieee802_1x && ieee->drop_unencrypted && ether_type != ETH_P_PAE) { @@ -285,8 +280,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) } /* Save source and destination addresses */ - memcpy(&dest, skb->data, ETH_ALEN); - memcpy(&src, skb->data + ETH_ALEN, ETH_ALEN); + memcpy(dest, skb->data, ETH_ALEN); + memcpy(src, skb->data + ETH_ALEN, ETH_ALEN); /* Advance the SKB to the start of the payload */ skb_pull(skb, sizeof(struct ethhdr)); @@ -294,7 +289,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) /* Determine total amount of storage required for TXB packets */ bytes = skb->len + SNAP_SIZE + sizeof(u16); - if (encrypt) + if (host_encrypt) fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA | IEEE80211_FCTL_PROTECTED; else @@ -302,70 +297,144 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) if (ieee->iw_mode == IW_MODE_INFRA) { fc |= IEEE80211_FCTL_TODS; - /* To DS: Addr1 = BSSID, Addr2 = SA, - Addr3 = DA */ - memcpy(&header.addr1, ieee->bssid, ETH_ALEN); - memcpy(&header.addr2, &src, ETH_ALEN); - memcpy(&header.addr3, &dest, ETH_ALEN); + /* To DS: Addr1 = BSSID, Addr2 = SA, Addr3 = DA */ + memcpy(header.addr1, ieee->bssid, ETH_ALEN); + memcpy(header.addr2, src, ETH_ALEN); + memcpy(header.addr3, dest, ETH_ALEN); } else if (ieee->iw_mode == IW_MODE_ADHOC) { - /* not From/To DS: Addr1 = DA, Addr2 = SA, - Addr3 = BSSID */ - memcpy(&header.addr1, dest, ETH_ALEN); - memcpy(&header.addr2, src, ETH_ALEN); - memcpy(&header.addr3, ieee->bssid, ETH_ALEN); + /* not From/To DS: Addr1 = DA, Addr2 = SA, Addr3 = BSSID */ + memcpy(header.addr1, dest, ETH_ALEN); + memcpy(header.addr2, src, ETH_ALEN); + memcpy(header.addr3, ieee->bssid, ETH_ALEN); } header.frame_ctl = cpu_to_le16(fc); hdr_len = IEEE80211_3ADDR_LEN; - /* Determine fragmentation size based on destination (multicast - * and broadcast are not fragmented) */ - if (is_multicast_ether_addr(dest) || is_broadcast_ether_addr(dest)) - frag_size = MAX_FRAG_THRESHOLD; - else - frag_size = ieee->fts; + /* Encrypt msdu first on the whole data packet. */ + if ((host_encrypt || host_encrypt_msdu) && + crypt && crypt->ops && crypt->ops->encrypt_msdu) { + int res = 0; + int len = bytes + hdr_len + crypt->ops->extra_msdu_prefix_len + + crypt->ops->extra_msdu_postfix_len; + struct sk_buff *skb_new = dev_alloc_skb(len); + + if (unlikely(!skb_new)) + goto failed; + + skb_reserve(skb_new, crypt->ops->extra_msdu_prefix_len); + memcpy(skb_put(skb_new, hdr_len), &header, hdr_len); + snapped = 1; + ieee80211_copy_snap(skb_put(skb_new, SNAP_SIZE + sizeof(u16)), + ether_type); + memcpy(skb_put(skb_new, skb->len), skb->data, skb->len); + res = crypt->ops->encrypt_msdu(skb_new, hdr_len, crypt->priv); + if (res < 0) { + IEEE80211_ERROR("msdu encryption failed\n"); + dev_kfree_skb_any(skb_new); + goto failed; + } + dev_kfree_skb_any(skb); + skb = skb_new; + bytes += crypt->ops->extra_msdu_prefix_len + + crypt->ops->extra_msdu_postfix_len; + skb_pull(skb, hdr_len); + } - /* Determine amount of payload per fragment. Regardless of if - * this stack is providing the full 802.11 header, one will - * eventually be affixed to this fragment -- so we must account for - * it when determining the amount of payload space. */ - bytes_per_frag = frag_size - IEEE80211_3ADDR_LEN; - if (ieee->config & - (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS)) - bytes_per_frag -= IEEE80211_FCS_LEN; - - /* Each fragment may need to have room for encryptiong pre/postfix */ - if (encrypt) - bytes_per_frag -= crypt->ops->extra_prefix_len + - crypt->ops->extra_postfix_len; - - /* Number of fragments is the total bytes_per_frag / - * payload_per_fragment */ - nr_frags = bytes / bytes_per_frag; - bytes_last_frag = bytes % bytes_per_frag; - if (bytes_last_frag) + if (host_encrypt || ieee->host_open_frag) { + /* Determine fragmentation size based on destination (multicast + * and broadcast are not fragmented) */ + if (is_multicast_ether_addr(dest) || + is_broadcast_ether_addr(dest)) + frag_size = MAX_FRAG_THRESHOLD; + else + frag_size = ieee->fts; + + /* Determine amount of payload per fragment. Regardless of if + * this stack is providing the full 802.11 header, one will + * eventually be affixed to this fragment -- so we must account + * for it when determining the amount of payload space. */ + bytes_per_frag = frag_size - IEEE80211_3ADDR_LEN; + if (ieee->config & + (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS)) + bytes_per_frag -= IEEE80211_FCS_LEN; + + /* Each fragment may need to have room for encryptiong + * pre/postfix */ + if (host_encrypt) + bytes_per_frag -= crypt->ops->extra_mpdu_prefix_len + + crypt->ops->extra_mpdu_postfix_len; + + /* Number of fragments is the total + * bytes_per_frag / payload_per_fragment */ + nr_frags = bytes / bytes_per_frag; + bytes_last_frag = bytes % bytes_per_frag; + if (bytes_last_frag) + nr_frags++; + else + bytes_last_frag = bytes_per_frag; + } else { + nr_frags = 1; + bytes_per_frag = bytes_last_frag = bytes; + frag_size = bytes + IEEE80211_3ADDR_LEN; + } + + rts_required = (frag_size > ieee->rts + && ieee->config & CFG_IEEE80211_RTS); + if (rts_required) nr_frags++; - else - bytes_last_frag = bytes_per_frag; /* When we allocate the TXB we allocate enough space for the reserve * and full fragment bytes (bytes_per_frag doesn't include prefix, * postfix, header, FCS, etc.) */ - txb = ieee80211_alloc_txb(nr_frags, frag_size, GFP_ATOMIC); + txb = ieee80211_alloc_txb(nr_frags, frag_size, + ieee->tx_headroom, GFP_ATOMIC); if (unlikely(!txb)) { printk(KERN_WARNING "%s: Could not allocate TXB\n", ieee->dev->name); goto failed; } txb->encrypted = encrypt; - txb->payload_size = bytes; + if (host_encrypt) + txb->payload_size = frag_size * (nr_frags - 1) + + bytes_last_frag; + else + txb->payload_size = bytes; + + if (rts_required) { + skb_frag = txb->fragments[0]; + frag_hdr = + (struct ieee80211_hdr_3addr *)skb_put(skb_frag, hdr_len); + + /* + * Set header frame_ctl to the RTS. + */ + header.frame_ctl = + cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS); + memcpy(frag_hdr, &header, hdr_len); - for (i = 0; i < nr_frags; i++) { + /* + * Restore header frame_ctl to the original data setting. + */ + header.frame_ctl = cpu_to_le16(fc); + + if (ieee->config & + (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS)) + skb_put(skb_frag, 4); + + txb->rts_included = 1; + i = 1; + } else + i = 0; + + for (; i < nr_frags; i++) { skb_frag = txb->fragments[i]; - if (encrypt) - skb_reserve(skb_frag, crypt->ops->extra_prefix_len); + if (host_encrypt || host_build_iv) + skb_reserve(skb_frag, + crypt->ops->extra_mpdu_prefix_len); - frag_hdr = (struct ieee80211_hdr *)skb_put(skb_frag, hdr_len); + frag_hdr = + (struct ieee80211_hdr_3addr *)skb_put(skb_frag, hdr_len); memcpy(frag_hdr, &header, hdr_len); /* If this is not the last fragment, then add the MOREFRAGS @@ -379,11 +448,10 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) bytes = bytes_last_frag; } - /* Put a SNAP header on the first fragment */ - if (i == 0) { - ieee80211_put_snap(skb_put - (skb_frag, SNAP_SIZE + sizeof(u16)), - ether_type); + if (i == 0 && !snapped) { + ieee80211_copy_snap(skb_put + (skb_frag, SNAP_SIZE + sizeof(u16)), + ether_type); bytes -= SNAP_SIZE + sizeof(u16); } @@ -394,8 +462,19 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) /* Encryption routine will move the header forward in order * to insert the IV between the header and the payload */ - if (encrypt) + if (host_encrypt) ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len); + else if (host_build_iv) { + struct ieee80211_crypt_data *crypt; + + crypt = ieee->crypt[ieee->tx_keyidx]; + atomic_inc(&crypt->refcnt); + if (crypt->ops->build_iv) + crypt->ops->build_iv(skb_frag, hdr_len, + crypt->priv); + atomic_dec(&crypt->refcnt); + } + if (ieee->config & (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS)) skb_put(skb_frag, 4); @@ -407,11 +486,20 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) dev_kfree_skb_any(skb); if (txb) { - if ((*ieee->hard_start_xmit) (txb, dev) == 0) { + int ret = (*ieee->hard_start_xmit) (txb, dev, priority); + if (ret == 0) { stats->tx_packets++; stats->tx_bytes += txb->payload_size; return 0; } + + if (ret == NETDEV_TX_BUSY) { + printk(KERN_ERR "%s: NETDEV_TX_BUSY returned; " + "driver should report queue full via " + "ieee_device->is_queue_full.\n", + ieee->dev->name); + } + ieee80211_txb_free(txb); } @@ -422,7 +510,72 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) netif_stop_queue(dev); stats->tx_errors++; return 1; +} + +/* Incoming 802.11 strucure is converted to a TXB + * a block of 802.11 fragment packets (stored as skbs) */ +int ieee80211_tx_frame(struct ieee80211_device *ieee, + struct ieee80211_hdr *frame, int len) +{ + struct ieee80211_txb *txb = NULL; + unsigned long flags; + struct net_device_stats *stats = &ieee->stats; + struct sk_buff *skb_frag; + int priority = -1; + + spin_lock_irqsave(&ieee->lock, flags); + /* If there is no driver handler to take the TXB, dont' bother + * creating it... */ + if (!ieee->hard_start_xmit) { + printk(KERN_WARNING "%s: No xmit handler.\n", ieee->dev->name); + goto success; + } + + if (unlikely(len < 24)) { + printk(KERN_WARNING "%s: skb too small (%d).\n", + ieee->dev->name, len); + goto success; + } + + /* When we allocate the TXB we allocate enough space for the reserve + * and full fragment bytes (bytes_per_frag doesn't include prefix, + * postfix, header, FCS, etc.) */ + txb = ieee80211_alloc_txb(1, len, ieee->tx_headroom, GFP_ATOMIC); + if (unlikely(!txb)) { + printk(KERN_WARNING "%s: Could not allocate TXB\n", + ieee->dev->name); + goto failed; + } + txb->encrypted = 0; + txb->payload_size = len; + + skb_frag = txb->fragments[0]; + + memcpy(skb_put(skb_frag, len), frame, len); + + if (ieee->config & + (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS)) + skb_put(skb_frag, 4); + + success: + spin_unlock_irqrestore(&ieee->lock, flags); + + if (txb) { + if ((*ieee->hard_start_xmit) (txb, ieee->dev, priority) == 0) { + stats->tx_packets++; + stats->tx_bytes += txb->payload_size; + return 0; + } + ieee80211_txb_free(txb); + } + return 0; + + failed: + spin_unlock_irqrestore(&ieee->lock, flags); + stats->tx_errors++; + return 1; } +EXPORT_SYMBOL(ieee80211_tx_frame); EXPORT_SYMBOL(ieee80211_txb_free); diff --git a/net/ieee80211/ieee80211_wx.c b/net/ieee80211/ieee80211_wx.c index 94882f39b072..1ce7af9bec35 100644 --- a/net/ieee80211/ieee80211_wx.c +++ b/net/ieee80211/ieee80211_wx.c @@ -1,6 +1,6 @@ /****************************************************************************** - Copyright(c) 2004 Intel Corporation. All rights reserved. + Copyright(c) 2004-2005 Intel Corporation. All rights reserved. Portions of this file are based on the WEP enablement code provided by the Host AP project hostap-drivers v0.1.3 @@ -32,6 +32,7 @@ #include <linux/kmod.h> #include <linux/module.h> +#include <linux/jiffies.h> #include <net/ieee80211.h> #include <linux/wireless.h> @@ -140,18 +141,41 @@ static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee, start = iwe_stream_add_point(start, stop, &iwe, custom); /* Add quality statistics */ - /* TODO: Fix these values... */ iwe.cmd = IWEVQUAL; - iwe.u.qual.qual = network->stats.signal; - iwe.u.qual.level = network->stats.rssi; - iwe.u.qual.noise = network->stats.noise; - iwe.u.qual.updated = network->stats.mask & IEEE80211_STATMASK_WEMASK; - if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) - iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID; - if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) + iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED | IW_QUAL_LEVEL_UPDATED | + IW_QUAL_NOISE_UPDATED; + + if (!(network->stats.mask & IEEE80211_STATMASK_RSSI)) { + iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID | + IW_QUAL_LEVEL_INVALID; + iwe.u.qual.qual = 0; + iwe.u.qual.level = 0; + } else { + iwe.u.qual.level = network->stats.rssi; + if (ieee->perfect_rssi == ieee->worst_rssi) + iwe.u.qual.qual = 100; + else + iwe.u.qual.qual = + (100 * + (ieee->perfect_rssi - ieee->worst_rssi) * + (ieee->perfect_rssi - ieee->worst_rssi) - + (ieee->perfect_rssi - network->stats.rssi) * + (15 * (ieee->perfect_rssi - ieee->worst_rssi) + + 62 * (ieee->perfect_rssi - network->stats.rssi))) / + ((ieee->perfect_rssi - ieee->worst_rssi) * + (ieee->perfect_rssi - ieee->worst_rssi)); + if (iwe.u.qual.qual > 100) + iwe.u.qual.qual = 100; + else if (iwe.u.qual.qual < 1) + iwe.u.qual.qual = 0; + } + + if (!(network->stats.mask & IEEE80211_STATMASK_NOISE)) { iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID; - if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL)) - iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID; + iwe.u.qual.noise = 0; + } else { + iwe.u.qual.noise = network->stats.noise; + } start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN); @@ -162,7 +186,7 @@ static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee, if (iwe.u.data.length) start = iwe_stream_add_point(start, stop, &iwe, custom); - if (ieee->wpa_enabled && network->wpa_ie_len) { + if (network->wpa_ie_len) { char buf[MAX_WPA_IE_LEN * 2 + 30]; u8 *p = buf; @@ -177,7 +201,7 @@ static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee, start = iwe_stream_add_point(start, stop, &iwe, buf); } - if (ieee->wpa_enabled && network->rsn_ie_len) { + if (network->rsn_ie_len) { char buf[MAX_WPA_IE_LEN * 2 + 30]; u8 *p = buf; @@ -197,8 +221,8 @@ static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee, iwe.cmd = IWEVCUSTOM; p = custom; p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), - " Last beacon: %lums ago", - (jiffies - network->last_scanned) / (HZ / 100)); + " Last beacon: %dms ago", + jiffies_to_msecs(jiffies - network->last_scanned)); iwe.u.data.length = p - custom; if (iwe.u.data.length) start = iwe_stream_add_point(start, stop, &iwe, custom); @@ -228,13 +252,13 @@ int ieee80211_wx_get_scan(struct ieee80211_device *ieee, ev = ipw2100_translate_scan(ieee, ev, stop, network); else IEEE80211_DEBUG_SCAN("Not showing network '%s (" - MAC_FMT ")' due to age (%lums).\n", + MAC_FMT ")' due to age (%dms).\n", escape_essid(network->ssid, network->ssid_len), MAC_ARG(network->bssid), - (jiffies - - network->last_scanned) / (HZ / - 100)); + jiffies_to_msecs(jiffies - + network-> + last_scanned)); } spin_unlock_irqrestore(&ieee->lock, flags); @@ -258,6 +282,7 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee, }; int i, key, key_provided, len; struct ieee80211_crypt_data **crypt; + int host_crypto = ieee->host_encrypt || ieee->host_decrypt; IEEE80211_DEBUG_WX("SET_ENCODE\n"); @@ -298,15 +323,17 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee, if (i == WEP_KEYS) { sec.enabled = 0; + sec.encrypt = 0; sec.level = SEC_LEVEL_0; - sec.flags |= SEC_ENABLED | SEC_LEVEL; + sec.flags |= SEC_ENABLED | SEC_LEVEL | SEC_ENCRYPT; } goto done; } sec.enabled = 1; - sec.flags |= SEC_ENABLED; + sec.encrypt = 1; + sec.flags |= SEC_ENABLED | SEC_ENCRYPT; if (*crypt != NULL && (*crypt)->ops != NULL && strcmp((*crypt)->ops->name, "WEP") != 0) { @@ -315,7 +342,7 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee, ieee80211_crypt_delayed_deinit(ieee, crypt); } - if (*crypt == NULL) { + if (*crypt == NULL && host_crypto) { struct ieee80211_crypt_data *new_crypt; /* take WEP into use */ @@ -355,49 +382,56 @@ int ieee80211_wx_set_encode(struct ieee80211_device *ieee, key, escape_essid(sec.keys[key], len), erq->length, len); sec.key_sizes[key] = len; - (*crypt)->ops->set_key(sec.keys[key], len, NULL, - (*crypt)->priv); + if (*crypt) + (*crypt)->ops->set_key(sec.keys[key], len, NULL, + (*crypt)->priv); sec.flags |= (1 << key); /* This ensures a key will be activated if no key is * explicitely set */ if (key == sec.active_key) sec.flags |= SEC_ACTIVE_KEY; + } else { - len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN, - NULL, (*crypt)->priv); - if (len == 0) { - /* Set a default key of all 0 */ - IEEE80211_DEBUG_WX("Setting key %d to all zero.\n", - key); - memset(sec.keys[key], 0, 13); - (*crypt)->ops->set_key(sec.keys[key], 13, NULL, - (*crypt)->priv); - sec.key_sizes[key] = 13; - sec.flags |= (1 << key); + if (host_crypto) { + len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN, + NULL, (*crypt)->priv); + if (len == 0) { + /* Set a default key of all 0 */ + IEEE80211_DEBUG_WX("Setting key %d to all " + "zero.\n", key); + memset(sec.keys[key], 0, 13); + (*crypt)->ops->set_key(sec.keys[key], 13, NULL, + (*crypt)->priv); + sec.key_sizes[key] = 13; + sec.flags |= (1 << key); + } } - /* No key data - just set the default TX key index */ if (key_provided) { - IEEE80211_DEBUG_WX - ("Setting key %d to default Tx key.\n", key); + IEEE80211_DEBUG_WX("Setting key %d to default Tx " + "key.\n", key); ieee->tx_keyidx = key; sec.active_key = key; sec.flags |= SEC_ACTIVE_KEY; } } - - done: - ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED); - sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY; - sec.flags |= SEC_AUTH_MODE; - IEEE80211_DEBUG_WX("Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ? - "OPEN" : "SHARED KEY"); + if (erq->flags & (IW_ENCODE_OPEN | IW_ENCODE_RESTRICTED)) { + ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED); + sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : + WLAN_AUTH_SHARED_KEY; + sec.flags |= SEC_AUTH_MODE; + IEEE80211_DEBUG_WX("Auth: %s\n", + sec.auth_mode == WLAN_AUTH_OPEN ? + "OPEN" : "SHARED KEY"); + } /* For now we just support WEP, so only set that security level... * TODO: When WPA is added this is one place that needs to change */ sec.flags |= SEC_LEVEL; sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */ + sec.encode_alg[key] = SEC_ALG_WEP; + done: if (ieee->set_security) ieee->set_security(dev, &sec); @@ -422,6 +456,7 @@ int ieee80211_wx_get_encode(struct ieee80211_device *ieee, struct iw_point *erq = &(wrqu->encoding); int len, key; struct ieee80211_crypt_data *crypt; + struct ieee80211_security *sec = &ieee->sec; IEEE80211_DEBUG_WX("GET_ENCODE\n"); @@ -436,23 +471,16 @@ int ieee80211_wx_get_encode(struct ieee80211_device *ieee, crypt = ieee->crypt[key]; erq->flags = key + 1; - if (crypt == NULL || crypt->ops == NULL) { + if (!sec->enabled) { erq->length = 0; erq->flags |= IW_ENCODE_DISABLED; return 0; } - if (strcmp(crypt->ops->name, "WEP") != 0) { - /* only WEP is supported with wireless extensions, so just - * report that encryption is used */ - erq->length = 0; - erq->flags |= IW_ENCODE_ENABLED; - return 0; - } + len = sec->key_sizes[key]; + memcpy(keybuf, sec->keys[key], len); - len = crypt->ops->get_key(keybuf, WEP_KEY_LEN, NULL, crypt->priv); erq->length = (len >= 0 ? len : 0); - erq->flags |= IW_ENCODE_ENABLED; if (ieee->open_wep) @@ -463,6 +491,240 @@ int ieee80211_wx_get_encode(struct ieee80211_device *ieee, return 0; } +int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee, + struct iw_request_info *info, + union iwreq_data *wrqu, char *extra) +{ + struct net_device *dev = ieee->dev; + struct iw_point *encoding = &wrqu->encoding; + struct iw_encode_ext *ext = (struct iw_encode_ext *)extra; + int i, idx, ret = 0; + int group_key = 0; + const char *alg, *module; + struct ieee80211_crypto_ops *ops; + struct ieee80211_crypt_data **crypt; + + struct ieee80211_security sec = { + .flags = 0, + }; + + idx = encoding->flags & IW_ENCODE_INDEX; + if (idx) { + if (idx < 1 || idx > WEP_KEYS) + return -EINVAL; + idx--; + } else + idx = ieee->tx_keyidx; + + if (ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) { + crypt = &ieee->crypt[idx]; + group_key = 1; + } else { + if (idx != 0) + return -EINVAL; + if (ieee->iw_mode == IW_MODE_INFRA) + crypt = &ieee->crypt[idx]; + else + return -EINVAL; + } + + sec.flags |= SEC_ENABLED | SEC_ENCRYPT; + if ((encoding->flags & IW_ENCODE_DISABLED) || + ext->alg == IW_ENCODE_ALG_NONE) { + if (*crypt) + ieee80211_crypt_delayed_deinit(ieee, crypt); + + for (i = 0; i < WEP_KEYS; i++) + if (ieee->crypt[i] != NULL) + break; + + if (i == WEP_KEYS) { + sec.enabled = 0; + sec.encrypt = 0; + sec.level = SEC_LEVEL_0; + sec.flags |= SEC_LEVEL; + } + goto done; + } + + sec.enabled = 1; + sec.encrypt = 1; + + if (group_key ? !ieee->host_mc_decrypt : + !(ieee->host_encrypt || ieee->host_decrypt || + ieee->host_encrypt_msdu)) + goto skip_host_crypt; + + switch (ext->alg) { + case IW_ENCODE_ALG_WEP: + alg = "WEP"; + module = "ieee80211_crypt_wep"; + break; + case IW_ENCODE_ALG_TKIP: + alg = "TKIP"; + module = "ieee80211_crypt_tkip"; + break; + case IW_ENCODE_ALG_CCMP: + alg = "CCMP"; + module = "ieee80211_crypt_ccmp"; + break; + default: + IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n", + dev->name, ext->alg); + ret = -EINVAL; + goto done; + } + + ops = ieee80211_get_crypto_ops(alg); + if (ops == NULL) { + request_module(module); + ops = ieee80211_get_crypto_ops(alg); + } + if (ops == NULL) { + IEEE80211_DEBUG_WX("%s: unknown crypto alg %d\n", + dev->name, ext->alg); + ret = -EINVAL; + goto done; + } + + if (*crypt == NULL || (*crypt)->ops != ops) { + struct ieee80211_crypt_data *new_crypt; + + ieee80211_crypt_delayed_deinit(ieee, crypt); + + new_crypt = (struct ieee80211_crypt_data *) + kmalloc(sizeof(*new_crypt), GFP_KERNEL); + if (new_crypt == NULL) { + ret = -ENOMEM; + goto done; + } + memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data)); + new_crypt->ops = ops; + if (new_crypt->ops && try_module_get(new_crypt->ops->owner)) + new_crypt->priv = new_crypt->ops->init(idx); + if (new_crypt->priv == NULL) { + kfree(new_crypt); + ret = -EINVAL; + goto done; + } + *crypt = new_crypt; + } + + if (ext->key_len > 0 && (*crypt)->ops->set_key && + (*crypt)->ops->set_key(ext->key, ext->key_len, ext->rx_seq, + (*crypt)->priv) < 0) { + IEEE80211_DEBUG_WX("%s: key setting failed\n", dev->name); + ret = -EINVAL; + goto done; + } + + skip_host_crypt: + if (ext->ext_flags & IW_ENCODE_EXT_SET_TX_KEY) { + ieee->tx_keyidx = idx; + sec.active_key = idx; + sec.flags |= SEC_ACTIVE_KEY; + } + + if (ext->alg != IW_ENCODE_ALG_NONE) { + memcpy(sec.keys[idx], ext->key, ext->key_len); + sec.key_sizes[idx] = ext->key_len; + sec.flags |= (1 << idx); + if (ext->alg == IW_ENCODE_ALG_WEP) { + sec.encode_alg[idx] = SEC_ALG_WEP; + sec.flags |= SEC_LEVEL; + sec.level = SEC_LEVEL_1; + } else if (ext->alg == IW_ENCODE_ALG_TKIP) { + sec.encode_alg[idx] = SEC_ALG_TKIP; + sec.flags |= SEC_LEVEL; + sec.level = SEC_LEVEL_2; + } else if (ext->alg == IW_ENCODE_ALG_CCMP) { + sec.encode_alg[idx] = SEC_ALG_CCMP; + sec.flags |= SEC_LEVEL; + sec.level = SEC_LEVEL_3; + } + /* Don't set sec level for group keys. */ + if (group_key) + sec.flags &= ~SEC_LEVEL; + } + done: + if (ieee->set_security) + ieee->set_security(ieee->dev, &sec); + + /* + * Do not reset port if card is in Managed mode since resetting will + * generate new IEEE 802.11 authentication which may end up in looping + * with IEEE 802.1X. If your hardware requires a reset after WEP + * configuration (for example... Prism2), implement the reset_port in + * the callbacks structures used to initialize the 802.11 stack. + */ + if (ieee->reset_on_keychange && + ieee->iw_mode != IW_MODE_INFRA && + ieee->reset_port && ieee->reset_port(dev)) { + IEEE80211_DEBUG_WX("%s: reset_port failed\n", dev->name); + return -EINVAL; + } + + return ret; +} + +int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee, + struct iw_request_info *info, + union iwreq_data *wrqu, char *extra) +{ + struct iw_point *encoding = &wrqu->encoding; + struct iw_encode_ext *ext = (struct iw_encode_ext *)extra; + struct ieee80211_security *sec = &ieee->sec; + int idx, max_key_len; + + max_key_len = encoding->length - sizeof(*ext); + if (max_key_len < 0) + return -EINVAL; + + idx = encoding->flags & IW_ENCODE_INDEX; + if (idx) { + if (idx < 1 || idx > WEP_KEYS) + return -EINVAL; + idx--; + } else + idx = ieee->tx_keyidx; + + if (!ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY) + if (idx != 0 || ieee->iw_mode != IW_MODE_INFRA) + return -EINVAL; + + encoding->flags = idx + 1; + memset(ext, 0, sizeof(*ext)); + + if (!sec->enabled) { + ext->alg = IW_ENCODE_ALG_NONE; + ext->key_len = 0; + encoding->flags |= IW_ENCODE_DISABLED; + } else { + if (sec->encode_alg[idx] == SEC_ALG_WEP) + ext->alg = IW_ENCODE_ALG_WEP; + else if (sec->encode_alg[idx] == SEC_ALG_TKIP) + ext->alg = IW_ENCODE_ALG_TKIP; + else if (sec->encode_alg[idx] == SEC_ALG_CCMP) + ext->alg = IW_ENCODE_ALG_CCMP; + else + return -EINVAL; + + ext->key_len = sec->key_sizes[idx]; + memcpy(ext->key, sec->keys[idx], ext->key_len); + encoding->flags |= IW_ENCODE_ENABLED; + if (ext->key_len && + (ext->alg == IW_ENCODE_ALG_TKIP || + ext->alg == IW_ENCODE_ALG_CCMP)) + ext->ext_flags |= IW_ENCODE_EXT_TX_SEQ_VALID; + + } + + return 0; +} + +EXPORT_SYMBOL(ieee80211_wx_set_encodeext); +EXPORT_SYMBOL(ieee80211_wx_get_encodeext); + EXPORT_SYMBOL(ieee80211_wx_get_scan); EXPORT_SYMBOL(ieee80211_wx_set_encode); EXPORT_SYMBOL(ieee80211_wx_get_encode); |