net/ieee80211 -> drivers/net/ipw2x00/libipw_* rename

The old ieee80211 code only remains as a support library for the ipw2100
and ipw2200 drivers.  So, move the code and rename it appropriately to
reflects it's true purpose and status.

Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 0 insertions, 546 deletions

diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c
deleted file mode 100644
index f78f57e8844..00000000000
--- a/net/ieee80211/ieee80211_tx.c
+++ /dev/null
@@ -1,546 +0,0 @@
-/******************************************************************************
-
-  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
-  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/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/wireless.h>
-#include <linux/etherdevice.h>
-#include <asm/uaccess.h>
-
-#include <net/ieee80211.h>
-
-/*
-
-802.11 Data Frame
-
-      ,-------------------------------------------------------------------.
-Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
-      |------|------|---------|---------|---------|------|---------|------|
-Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  Frame  |  fcs |
-      |      | tion | (BSSID) |         |         | ence |  data   |      |
-      `--------------------------------------------------|         |------'
-Total: 28 non-data bytes                                 `----.----'
-							      |
-       .- 'Frame data' expands, if WEP enabled, to <----------'
-       |
-       V
-      ,-----------------------.
-Bytes |  4  |   0-2296  |  4  |
-      |-----|-----------|-----|
-Desc. | IV  | Encrypted | ICV |
-      |     | Packet    |     |
-      `-----|           |-----'
-	    `-----.-----'
-		  |
-       .- 'Encrypted Packet' expands to
-       |
-       V
-      ,---------------------------------------------------.
-Bytes |  1   |  1   |    1    |    3     |  2   |  0-2304 |
-      |------|------|---------|----------|------|---------|
-Desc. | SNAP | SNAP | Control |Eth Tunnel| Type | IP      |
-      | DSAP | SSAP |         |          |      | Packet  |
-      | 0xAA | 0xAA |0x03 (UI)|0x00-00-F8|      |         |
-      `----------------------------------------------------
-Total: 8 non-data bytes
-
-802.3 Ethernet Data Frame
-
-      ,-----------------------------------------.
-Bytes |   6   |   6   |  2   |  Variable |   4  |
-      |-------|-------|------|-----------|------|
-Desc. | Dest. | Source| Type | IP Packet |  fcs |
-      |  MAC  |  MAC  |      |           |      |
-      `-----------------------------------------'
-Total: 18 non-data bytes
-
-In the event that fragmentation is required, the incoming payload is split into
-N parts of size ieee->fts.  The first fragment contains the SNAP header and the
-remaining packets are just data.
-
-If encryption is enabled, each fragment payload size is reduced by enough space
-to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP)
-So if you have 1500 bytes of payload with ieee->fts set to 500 without
-encryption it will take 3 frames.  With WEP it will take 4 frames as the
-payload of each frame is reduced to 492 bytes.
-
-* SKB visualization
-*
-*  ,- skb->data
-* |
-* |    ETHERNET HEADER        ,-<-- PAYLOAD
-* |                           |     14 bytes from skb->data
-* |  2 bytes for Type --> ,T. |     (sizeof ethhdr)
-* |                       | | |
-* |,-Dest.--. ,--Src.---. | | |
-* |  6 bytes| | 6 bytes | | | |
-* v         | |         | | | |
-* 0         | v       1 | v | v           2
-* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
-*     ^     | ^         | ^ |
-*     |     | |         | | |
-*     |     | |         | `T' <---- 2 bytes for Type
-*     |     | |         |
-*     |     | '---SNAP--' <-------- 6 bytes for SNAP
-*     |     |
-*     `-IV--' <-------------------- 4 bytes for IV (WEP)
-*
-*      SNAP HEADER
-*
-*/
-
-static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 };
-static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 };
-
-static int ieee80211_copy_snap(u8 * data, __be16 h_proto)
-{
-	struct ieee80211_snap_hdr *snap;
-	u8 *oui;
-
-	snap = (struct ieee80211_snap_hdr *)data;
-	snap->dsap = 0xaa;
-	snap->ssap = 0xaa;
-	snap->ctrl = 0x03;
-
-	if (h_proto == htons(ETH_P_AARP) || h_proto == htons(ETH_P_IPX))
-		oui = P802_1H_OUI;
-	else
-		oui = RFC1042_OUI;
-	snap->oui[0] = oui[0];
-	snap->oui[1] = oui[1];
-	snap->oui[2] = oui[2];
-
-	memcpy(data + SNAP_SIZE, &h_proto, sizeof(u16));
-
-	return SNAP_SIZE + sizeof(u16);
-}
-
-static int ieee80211_encrypt_fragment(struct ieee80211_device *ieee,
-					     struct sk_buff *frag, int hdr_len)
-{
-	struct lib80211_crypt_data *crypt =
-		ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
-	int res;
-
-	if (crypt == NULL)
-		return -1;
-
-	/* To encrypt, frame format is:
-	 * IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */
-	atomic_inc(&crypt->refcnt);
-	res = 0;
-	if (crypt->ops && crypt->ops->encrypt_mpdu)
-		res = crypt->ops->encrypt_mpdu(frag, hdr_len, crypt->priv);
-
-	atomic_dec(&crypt->refcnt);
-	if (res < 0) {
-		printk(KERN_INFO "%s: Encryption failed: len=%d.\n",
-		       ieee->dev->name, frag->len);
-		ieee->ieee_stats.tx_discards++;
-		return -1;
-	}
-
-	return 0;
-}
-
-void ieee80211_txb_free(struct ieee80211_txb *txb)
-{
-	int i;
-	if (unlikely(!txb))
-		return;
-	for (i = 0; i < txb->nr_frags; i++)
-		if (txb->fragments[i])
-			dev_kfree_skb_any(txb->fragments[i]);
-	kfree(txb);
-}
-
-static struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size,
-						 int headroom, gfp_t gfp_mask)
-{
-	struct ieee80211_txb *txb;
-	int i;
-	txb = kmalloc(sizeof(struct ieee80211_txb) + (sizeof(u8 *) * nr_frags),
-		      gfp_mask);
-	if (!txb)
-		return NULL;
-
-	memset(txb, 0, sizeof(struct ieee80211_txb));
-	txb->nr_frags = nr_frags;
-	txb->frag_size = txb_size;
-
-	for (i = 0; i < nr_frags; i++) {
-		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)
-			dev_kfree_skb_any(txb->fragments[i--]);
-		kfree(txb);
-		return NULL;
-	}
-	return txb;
-}
-
-static int ieee80211_classify(struct sk_buff *skb)
-{
-	struct ethhdr *eth;
-	struct iphdr *ip;
-
-	eth = (struct ethhdr *)skb->data;
-	if (eth->h_proto != htons(ETH_P_IP))
-		return 0;
-
-	ip = ip_hdr(skb);
-	switch (ip->tos & 0xfc) {
-	case 0x20:
-		return 2;
-	case 0x40:
-		return 1;
-	case 0x60:
-		return 3;
-	case 0x80:
-		return 4;
-	case 0xa0:
-		return 5;
-	case 0xc0:
-		return 6;
-	case 0xe0:
-		return 7;
-	default:
-		return 0;
-	}
-}
-
-/* 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_3addrqos *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 encrypt, host_encrypt, host_encrypt_msdu, host_build_iv;
-	__be16 ether_type;
-	int bytes, fc, hdr_len;
-	struct sk_buff *skb_frag;
-	struct ieee80211_hdr_3addrqos header = {/* Ensure zero initialized */
-		.duration_id = 0,
-		.seq_ctl = 0,
-		.qos_ctl = 0
-	};
-	u8 dest[ETH_ALEN], src[ETH_ALEN];
-	struct lib80211_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);
-
-	/* 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(skb->len < SNAP_SIZE + sizeof(u16))) {
-		printk(KERN_WARNING "%s: skb too small (%d).\n",
-		       ieee->dev->name, skb->len);
-		goto success;
-	}
-
-	ether_type = ((struct ethhdr *)skb->data)->h_proto;
-
-	crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
-
-	encrypt = !(ether_type == htons(ETH_P_PAE) && ieee->ieee802_1x) &&
-	    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 != htons(ETH_P_PAE)) {
-		stats->tx_dropped++;
-		goto success;
-	}
-
-	/* Save source and destination addresses */
-	skb_copy_from_linear_data(skb, dest, ETH_ALEN);
-	skb_copy_from_linear_data_offset(skb, ETH_ALEN, src, ETH_ALEN);
-
-	if (host_encrypt || host_build_iv)
-		fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA |
-		    IEEE80211_FCTL_PROTECTED;
-	else
-		fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
-
-	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);
-	} 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);
-	}
-	hdr_len = IEEE80211_3ADDR_LEN;
-
-	if (ieee->is_qos_active && ieee->is_qos_active(dev, skb)) {
-		fc |= IEEE80211_STYPE_QOS_DATA;
-		hdr_len += 2;
-
-		skb->priority = ieee80211_classify(skb);
-		header.qos_ctl |= cpu_to_le16(skb->priority & IEEE80211_QCTL_TID);
-	}
-	header.frame_ctl = cpu_to_le16(fc);
-
-	/* Advance the SKB to the start of the payload */
-	skb_pull(skb, sizeof(struct ethhdr));
-
-	/* Determine total amount of storage required for TXB packets */
-	bytes = skb->len + SNAP_SIZE + sizeof(u16);
-
-	/* 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);
-		skb_copy_from_linear_data(skb, skb_put(skb_new, skb->len), 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);
-	}
-
-	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 - hdr_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 + hdr_len;
-	}
-
-	rts_required = (frag_size > ieee->rts
-			&& ieee->config & CFG_IEEE80211_RTS);
-	if (rts_required)
-		nr_frags++;
-
-	/* 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,
-				  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;
-	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_3addrqos *)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);
-
-		/*
-		 * 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 (host_encrypt || host_build_iv)
-			skb_reserve(skb_frag,
-				    crypt->ops->extra_mpdu_prefix_len);
-
-		frag_hdr =
-		    (struct ieee80211_hdr_3addrqos *)skb_put(skb_frag, hdr_len);
-		memcpy(frag_hdr, &header, hdr_len);
-
-		/* If this is not the last fragment, then add the MOREFRAGS
-		 * bit to the frame control */
-		if (i != nr_frags - 1) {
-			frag_hdr->frame_ctl =
-			    cpu_to_le16(fc | IEEE80211_FCTL_MOREFRAGS);
-			bytes = bytes_per_frag;
-		} else {
-			/* The last fragment takes the remaining length */
-			bytes = bytes_last_frag;
-		}
-
-		if (i == 0 && !snapped) {
-			ieee80211_copy_snap(skb_put
-					    (skb_frag, SNAP_SIZE + sizeof(u16)),
-					    ether_type);
-			bytes -= SNAP_SIZE + sizeof(u16);
-		}
-
-		skb_copy_from_linear_data(skb, skb_put(skb_frag, bytes), bytes);
-
-		/* Advance the SKB... */
-		skb_pull(skb, bytes);
-
-		/* Encryption routine will move the header forward in order
-		 * to insert the IV between the header and the payload */
-		if (host_encrypt)
-			ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len);
-		else if (host_build_iv) {
-			atomic_inc(&crypt->refcnt);
-			if (crypt->ops->build_iv)
-				crypt->ops->build_iv(skb_frag, hdr_len,
-				      ieee->sec.keys[ieee->sec.active_key],
-				      ieee->sec.key_sizes[ieee->sec.active_key],
-				      crypt->priv);
-			atomic_dec(&crypt->refcnt);
-		}
-
-		if (ieee->config &
-		    (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
-			skb_put(skb_frag, 4);
-	}
-
-      success:
-	spin_unlock_irqrestore(&ieee->lock, flags);
-
-	dev_kfree_skb_any(skb);
-
-	if (txb) {
-		int ret = (*ieee->hard_start_xmit) (txb, dev, priority);
-		if (ret == 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);
-	netif_stop_queue(dev);
-	stats->tx_errors++;
-	return 1;
-}
-
-EXPORT_SYMBOL(ieee80211_txb_free);