1 files changed, 0 insertions, 554 deletions

diff --git a/drivers/net/wireless/intersil/hostap/hostap_80211_tx.c b/drivers/net/wireless/intersil/hostap/hostap_80211_tx.c
deleted file mode 100644
index c47da06945c2..000000000000
--- a/drivers/net/wireless/intersil/hostap/hostap_80211_tx.c
+++ /dev/null
@@ -1,554 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/slab.h>
-#include <linux/export.h>
-#include <linux/etherdevice.h>
-
-#include "hostap_80211.h"
-#include "hostap_common.h"
-#include "hostap_wlan.h"
-#include "hostap.h"
-#include "hostap_ap.h"
-
-/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
-/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
-static unsigned char rfc1042_header[] =
-{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
-/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
-static unsigned char bridge_tunnel_header[] =
-{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
-/* No encapsulation header if EtherType < 0x600 (=length) */
-
-void hostap_dump_tx_80211(const char *name, struct sk_buff *skb)
-{
-	struct ieee80211_hdr *hdr;
-	u16 fc;
-
-	hdr = (struct ieee80211_hdr *) skb->data;
-
-	printk(KERN_DEBUG "%s: TX len=%d jiffies=%ld\n",
-	       name, skb->len, jiffies);
-
-	if (skb->len < 2)
-		return;
-
-	fc = le16_to_cpu(hdr->frame_control);
-	printk(KERN_DEBUG "   FC=0x%04x (type=%d:%d)%s%s",
-	       fc, (fc & IEEE80211_FCTL_FTYPE) >> 2,
-	       (fc & IEEE80211_FCTL_STYPE) >> 4,
-	       fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
-	       fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
-
-	if (skb->len < IEEE80211_DATA_HDR3_LEN) {
-		printk("\n");
-		return;
-	}
-
-	printk(" dur=0x%04x seq=0x%04x\n", le16_to_cpu(hdr->duration_id),
-	       le16_to_cpu(hdr->seq_ctrl));
-
-	printk(KERN_DEBUG "   A1=%pM", hdr->addr1);
-	printk(" A2=%pM", hdr->addr2);
-	printk(" A3=%pM", hdr->addr3);
-	if (skb->len >= 30)
-		printk(" A4=%pM", hdr->addr4);
-	printk("\n");
-}
-
-
-/* hard_start_xmit function for data interfaces (wlan#, wlan#wds#, wlan#sta)
- * Convert Ethernet header into a suitable IEEE 802.11 header depending on
- * device configuration. */
-netdev_tx_t hostap_data_start_xmit(struct sk_buff *skb,
-				   struct net_device *dev)
-{
-	struct hostap_interface *iface;
-	local_info_t *local;
-	int need_headroom, need_tailroom = 0;
-	struct ieee80211_hdr hdr;
-	u16 fc, ethertype = 0;
-	enum {
-		WDS_NO = 0, WDS_OWN_FRAME, WDS_COMPLIANT_FRAME
-	} use_wds = WDS_NO;
-	u8 *encaps_data;
-	int hdr_len, encaps_len, skip_header_bytes;
-	int to_assoc_ap = 0;
-	struct hostap_skb_tx_data *meta;
-
-	iface = netdev_priv(dev);
-	local = iface->local;
-
-	if (skb->len < ETH_HLEN) {
-		printk(KERN_DEBUG "%s: hostap_data_start_xmit: short skb "
-		       "(len=%d)\n", dev->name, skb->len);
-		kfree_skb(skb);
-		return NETDEV_TX_OK;
-	}
-
-	if (local->ddev != dev) {
-		use_wds = (local->iw_mode == IW_MODE_MASTER &&
-			   !(local->wds_type & HOSTAP_WDS_STANDARD_FRAME)) ?
-			WDS_OWN_FRAME : WDS_COMPLIANT_FRAME;
-		if (dev == local->stadev) {
-			to_assoc_ap = 1;
-			use_wds = WDS_NO;
-		} else if (dev == local->apdev) {
-			printk(KERN_DEBUG "%s: prism2_tx: trying to use "
-			       "AP device with Ethernet net dev\n", dev->name);
-			kfree_skb(skb);
-			return NETDEV_TX_OK;
-		}
-	} else {
-		if (local->iw_mode == IW_MODE_REPEAT) {
-			printk(KERN_DEBUG "%s: prism2_tx: trying to use "
-			       "non-WDS link in Repeater mode\n", dev->name);
-			kfree_skb(skb);
-			return NETDEV_TX_OK;
-		} else if (local->iw_mode == IW_MODE_INFRA &&
-			   (local->wds_type & HOSTAP_WDS_AP_CLIENT) &&
-			   !ether_addr_equal(skb->data + ETH_ALEN, dev->dev_addr)) {
-			/* AP client mode: send frames with foreign src addr
-			 * using 4-addr WDS frames */
-			use_wds = WDS_COMPLIANT_FRAME;
-		}
-	}
-
-	/* Incoming skb->data: dst_addr[6], src_addr[6], proto[2], payload
-	 * ==>
-	 * Prism2 TX frame with 802.11 header:
-	 * txdesc (address order depending on used mode; includes dst_addr and
-	 * src_addr), possible encapsulation (RFC1042/Bridge-Tunnel;
-	 * proto[2], payload {, possible addr4[6]} */
-
-	ethertype = (skb->data[12] << 8) | skb->data[13];
-
-	memset(&hdr, 0, sizeof(hdr));
-
-	/* Length of data after IEEE 802.11 header */
-	encaps_data = NULL;
-	encaps_len = 0;
-	skip_header_bytes = ETH_HLEN;
-	if (ethertype == ETH_P_AARP || ethertype == ETH_P_IPX) {
-		encaps_data = bridge_tunnel_header;
-		encaps_len = sizeof(bridge_tunnel_header);
-		skip_header_bytes -= 2;
-	} else if (ethertype >= 0x600) {
-		encaps_data = rfc1042_header;
-		encaps_len = sizeof(rfc1042_header);
-		skip_header_bytes -= 2;
-	}
-
-	fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
-	hdr_len = IEEE80211_DATA_HDR3_LEN;
-
-	if (use_wds != WDS_NO) {
-		/* Note! Prism2 station firmware has problems with sending real
-		 * 802.11 frames with four addresses; until these problems can
-		 * be fixed or worked around, 4-addr frames needed for WDS are
-		 * using incompatible format: FromDS flag is not set and the
-		 * fourth address is added after the frame payload; it is
-		 * assumed, that the receiving station knows how to handle this
-		 * frame format */
-
-		if (use_wds == WDS_COMPLIANT_FRAME) {
-			fc |= IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS;
-			/* From&To DS: Addr1 = RA, Addr2 = TA, Addr3 = DA,
-			 * Addr4 = SA */
-			skb_copy_from_linear_data_offset(skb, ETH_ALEN,
-							 &hdr.addr4, ETH_ALEN);
-			hdr_len += ETH_ALEN;
-		} else {
-			/* bogus 4-addr format to workaround Prism2 station
-			 * f/w bug */
-			fc |= IEEE80211_FCTL_TODS;
-			/* From DS: Addr1 = DA (used as RA),
-			 * Addr2 = BSSID (used as TA), Addr3 = SA (used as DA),
-			 */
-
-			/* SA from skb->data + ETH_ALEN will be added after
-			 * frame payload; use hdr.addr4 as a temporary buffer
-			 */
-			skb_copy_from_linear_data_offset(skb, ETH_ALEN,
-							 &hdr.addr4, ETH_ALEN);
-			need_tailroom += ETH_ALEN;
-		}
-
-		/* send broadcast and multicast frames to broadcast RA, if
-		 * configured; otherwise, use unicast RA of the WDS link */
-		if ((local->wds_type & HOSTAP_WDS_BROADCAST_RA) &&
-		    is_multicast_ether_addr(skb->data))
-			eth_broadcast_addr(hdr.addr1);
-		else if (iface->type == HOSTAP_INTERFACE_WDS)
-			memcpy(&hdr.addr1, iface->u.wds.remote_addr,
-			       ETH_ALEN);
-		else
-			memcpy(&hdr.addr1, local->bssid, ETH_ALEN);
-		memcpy(&hdr.addr2, dev->dev_addr, ETH_ALEN);
-		skb_copy_from_linear_data(skb, &hdr.addr3, ETH_ALEN);
-	} else if (local->iw_mode == IW_MODE_MASTER && !to_assoc_ap) {
-		fc |= IEEE80211_FCTL_FROMDS;
-		/* From DS: Addr1 = DA, Addr2 = BSSID, Addr3 = SA */
-		skb_copy_from_linear_data(skb, &hdr.addr1, ETH_ALEN);
-		memcpy(&hdr.addr2, dev->dev_addr, ETH_ALEN);
-		skb_copy_from_linear_data_offset(skb, ETH_ALEN, &hdr.addr3,
-						 ETH_ALEN);
-	} else if (local->iw_mode == IW_MODE_INFRA || to_assoc_ap) {
-		fc |= IEEE80211_FCTL_TODS;
-		/* To DS: Addr1 = BSSID, Addr2 = SA, Addr3 = DA */
-		memcpy(&hdr.addr1, to_assoc_ap ?
-		       local->assoc_ap_addr : local->bssid, ETH_ALEN);
-		skb_copy_from_linear_data_offset(skb, ETH_ALEN, &hdr.addr2,
-						 ETH_ALEN);
-		skb_copy_from_linear_data(skb, &hdr.addr3, ETH_ALEN);
-	} else if (local->iw_mode == IW_MODE_ADHOC) {
-		/* not From/To DS: Addr1 = DA, Addr2 = SA, Addr3 = BSSID */
-		skb_copy_from_linear_data(skb, &hdr.addr1, ETH_ALEN);
-		skb_copy_from_linear_data_offset(skb, ETH_ALEN, &hdr.addr2,
-						 ETH_ALEN);
-		memcpy(&hdr.addr3, local->bssid, ETH_ALEN);
-	}
-
-	hdr.frame_control = cpu_to_le16(fc);
-
-	skb_pull(skb, skip_header_bytes);
-	need_headroom = local->func->need_tx_headroom + hdr_len + encaps_len;
-	if (skb_tailroom(skb) < need_tailroom) {
-		skb = skb_unshare(skb, GFP_ATOMIC);
-		if (skb == NULL) {
-			iface->stats.tx_dropped++;
-			return NETDEV_TX_OK;
-		}
-		if (pskb_expand_head(skb, need_headroom, need_tailroom,
-				     GFP_ATOMIC)) {
-			kfree_skb(skb);
-			iface->stats.tx_dropped++;
-			return NETDEV_TX_OK;
-		}
-	} else if (skb_headroom(skb) < need_headroom) {
-		struct sk_buff *tmp = skb;
-		skb = skb_realloc_headroom(skb, need_headroom);
-		kfree_skb(tmp);
-		if (skb == NULL) {
-			iface->stats.tx_dropped++;
-			return NETDEV_TX_OK;
-		}
-	} else {
-		skb = skb_unshare(skb, GFP_ATOMIC);
-		if (skb == NULL) {
-			iface->stats.tx_dropped++;
-			return NETDEV_TX_OK;
-		}
-	}
-
-	if (encaps_data)
-		memcpy(skb_push(skb, encaps_len), encaps_data, encaps_len);
-	memcpy(skb_push(skb, hdr_len), &hdr, hdr_len);
-	if (use_wds == WDS_OWN_FRAME) {
-		skb_put_data(skb, &hdr.addr4, ETH_ALEN);
-	}
-
-	iface->stats.tx_packets++;
-	iface->stats.tx_bytes += skb->len;
-
-	skb_reset_mac_header(skb);
-	meta = (struct hostap_skb_tx_data *) skb->cb;
-	memset(meta, 0, sizeof(*meta));
-	meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
-	if (use_wds)
-		meta->flags |= HOSTAP_TX_FLAGS_WDS;
-	meta->ethertype = ethertype;
-	meta->iface = iface;
-
-	/* Send IEEE 802.11 encapsulated frame using the master radio device */
-	skb->dev = local->dev;
-	dev_queue_xmit(skb);
-	return NETDEV_TX_OK;
-}
-
-
-/* hard_start_xmit function for hostapd wlan#ap interfaces */
-netdev_tx_t hostap_mgmt_start_xmit(struct sk_buff *skb,
-				   struct net_device *dev)
-{
-	struct hostap_interface *iface;
-	local_info_t *local;
-	struct hostap_skb_tx_data *meta;
-	struct ieee80211_hdr *hdr;
-	u16 fc;
-
-	iface = netdev_priv(dev);
-	local = iface->local;
-
-	if (skb->len < 10) {
-		printk(KERN_DEBUG "%s: hostap_mgmt_start_xmit: short skb "
-		       "(len=%d)\n", dev->name, skb->len);
-		kfree_skb(skb);
-		return NETDEV_TX_OK;
-	}
-
-	iface->stats.tx_packets++;
-	iface->stats.tx_bytes += skb->len;
-
-	meta = (struct hostap_skb_tx_data *) skb->cb;
-	memset(meta, 0, sizeof(*meta));
-	meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
-	meta->iface = iface;
-
-	if (skb->len >= IEEE80211_DATA_HDR3_LEN + sizeof(rfc1042_header) + 2) {
-		hdr = (struct ieee80211_hdr *) skb->data;
-		fc = le16_to_cpu(hdr->frame_control);
-		if (ieee80211_is_data(hdr->frame_control) &&
-		    (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_DATA) {
-			u8 *pos = &skb->data[IEEE80211_DATA_HDR3_LEN +
-					     sizeof(rfc1042_header)];
-			meta->ethertype = (pos[0] << 8) | pos[1];
-		}
-	}
-
-	/* Send IEEE 802.11 encapsulated frame using the master radio device */
-	skb->dev = local->dev;
-	dev_queue_xmit(skb);
-	return NETDEV_TX_OK;
-}
-
-
-/* Called only from software IRQ */
-static struct sk_buff * hostap_tx_encrypt(struct sk_buff *skb,
-					  struct lib80211_crypt_data *crypt)
-{
-	struct hostap_interface *iface;
-	local_info_t *local;
-	struct ieee80211_hdr *hdr;
-	int prefix_len, postfix_len, hdr_len, res;
-
-	iface = netdev_priv(skb->dev);
-	local = iface->local;
-
-	if (skb->len < IEEE80211_DATA_HDR3_LEN) {
-		kfree_skb(skb);
-		return NULL;
-	}
-
-	if (local->tkip_countermeasures &&
-	    strcmp(crypt->ops->name, "TKIP") == 0) {
-		hdr = (struct ieee80211_hdr *) skb->data;
-		if (net_ratelimit()) {
-			printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
-			       "TX packet to %pM\n",
-			       local->dev->name, hdr->addr1);
-		}
-		kfree_skb(skb);
-		return NULL;
-	}
-
-	skb = skb_unshare(skb, GFP_ATOMIC);
-	if (skb == NULL)
-		return NULL;
-
-	prefix_len = crypt->ops->extra_mpdu_prefix_len +
-		crypt->ops->extra_msdu_prefix_len;
-	postfix_len = crypt->ops->extra_mpdu_postfix_len +
-		crypt->ops->extra_msdu_postfix_len;
-	if ((skb_headroom(skb) < prefix_len ||
-	     skb_tailroom(skb) < postfix_len) &&
-	    pskb_expand_head(skb, prefix_len, postfix_len, GFP_ATOMIC)) {
-		kfree_skb(skb);
-		return NULL;
-	}
-
-	hdr = (struct ieee80211_hdr *) skb->data;
-	hdr_len = hostap_80211_get_hdrlen(hdr->frame_control);
-
-	/* 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(skb, hdr_len, crypt->priv);
-	if (res == 0 && crypt->ops->encrypt_mpdu)
-		res = crypt->ops->encrypt_mpdu(skb, hdr_len, crypt->priv);
-	atomic_dec(&crypt->refcnt);
-	if (res < 0) {
-		kfree_skb(skb);
-		return NULL;
-	}
-
-	return skb;
-}
-
-
-/* hard_start_xmit function for master radio interface wifi#.
- * AP processing (TX rate control, power save buffering, etc.).
- * Use hardware TX function to send the frame. */
-netdev_tx_t hostap_master_start_xmit(struct sk_buff *skb,
-				     struct net_device *dev)
-{
-	struct hostap_interface *iface;
-	local_info_t *local;
-	netdev_tx_t ret = NETDEV_TX_BUSY;
-	u16 fc;
-	struct hostap_tx_data tx;
-	ap_tx_ret tx_ret;
-	struct hostap_skb_tx_data *meta;
-	int no_encrypt = 0;
-	struct ieee80211_hdr *hdr;
-
-	iface = netdev_priv(dev);
-	local = iface->local;
-
-	tx.skb = skb;
-	tx.sta_ptr = NULL;
-
-	meta = (struct hostap_skb_tx_data *) skb->cb;
-	if (meta->magic != HOSTAP_SKB_TX_DATA_MAGIC) {
-		printk(KERN_DEBUG "%s: invalid skb->cb magic (0x%08x, "
-		       "expected 0x%08x)\n",
-		       dev->name, meta->magic, HOSTAP_SKB_TX_DATA_MAGIC);
-		ret = NETDEV_TX_OK;
-		iface->stats.tx_dropped++;
-		goto fail;
-	}
-
-	if (local->host_encrypt) {
-		/* Set crypt to default algorithm and key; will be replaced in
-		 * AP code if STA has own alg/key */
-		tx.crypt = local->crypt_info.crypt[local->crypt_info.tx_keyidx];
-		tx.host_encrypt = 1;
-	} else {
-		tx.crypt = NULL;
-		tx.host_encrypt = 0;
-	}
-
-	if (skb->len < 24) {
-		printk(KERN_DEBUG "%s: hostap_master_start_xmit: short skb "
-		       "(len=%d)\n", dev->name, skb->len);
-		ret = NETDEV_TX_OK;
-		iface->stats.tx_dropped++;
-		goto fail;
-	}
-
-	/* FIX (?):
-	 * Wi-Fi 802.11b test plan suggests that AP should ignore power save
-	 * bit in authentication and (re)association frames and assume tha
-	 * STA remains awake for the response. */
-	tx_ret = hostap_handle_sta_tx(local, &tx);
-	skb = tx.skb;
-	meta = (struct hostap_skb_tx_data *) skb->cb;
-	hdr = (struct ieee80211_hdr *) skb->data;
-	fc = le16_to_cpu(hdr->frame_control);
-	switch (tx_ret) {
-	case AP_TX_CONTINUE:
-		break;
-	case AP_TX_CONTINUE_NOT_AUTHORIZED:
-		if (local->ieee_802_1x &&
-		    ieee80211_is_data(hdr->frame_control) &&
-		    meta->ethertype != ETH_P_PAE &&
-		    !(meta->flags & HOSTAP_TX_FLAGS_WDS)) {
-			printk(KERN_DEBUG "%s: dropped frame to unauthorized "
-			       "port (IEEE 802.1X): ethertype=0x%04x\n",
-			       dev->name, meta->ethertype);
-			hostap_dump_tx_80211(dev->name, skb);
-
-			ret = NETDEV_TX_OK; /* drop packet */
-			iface->stats.tx_dropped++;
-			goto fail;
-		}
-		break;
-	case AP_TX_DROP:
-		ret = NETDEV_TX_OK; /* drop packet */
-		iface->stats.tx_dropped++;
-		goto fail;
-	case AP_TX_RETRY:
-		goto fail;
-	case AP_TX_BUFFERED:
-		/* do not free skb here, it will be freed when the
-		 * buffered frame is sent/timed out */
-		ret = NETDEV_TX_OK;
-		goto tx_exit;
-	}
-
-	/* Request TX callback if protocol version is 2 in 802.11 header;
-	 * this version 2 is a special case used between hostapd and kernel
-	 * driver */
-	if (((fc & IEEE80211_FCTL_VERS) == BIT(1)) &&
-	    local->ap && local->ap->tx_callback_idx && meta->tx_cb_idx == 0) {
-		meta->tx_cb_idx = local->ap->tx_callback_idx;
-
-		/* remove special version from the frame header */
-		fc &= ~IEEE80211_FCTL_VERS;
-		hdr->frame_control = cpu_to_le16(fc);
-	}
-
-	if (!ieee80211_is_data(hdr->frame_control)) {
-		no_encrypt = 1;
-		tx.crypt = NULL;
-	}
-
-	if (local->ieee_802_1x && meta->ethertype == ETH_P_PAE && tx.crypt &&
-	    !(fc & IEEE80211_FCTL_PROTECTED)) {
-		no_encrypt = 1;
-		PDEBUG(DEBUG_EXTRA2, "%s: TX: IEEE 802.1X - passing "
-		       "unencrypted EAPOL frame\n", dev->name);
-		tx.crypt = NULL; /* no encryption for IEEE 802.1X frames */
-	}
-
-	if (tx.crypt && (!tx.crypt->ops || !tx.crypt->ops->encrypt_mpdu))
-		tx.crypt = NULL;
-	else if ((tx.crypt ||
-		 local->crypt_info.crypt[local->crypt_info.tx_keyidx]) &&
-		 !no_encrypt) {
-		/* Add ISWEP flag both for firmware and host based encryption
-		 */
-		fc |= IEEE80211_FCTL_PROTECTED;
-		hdr->frame_control = cpu_to_le16(fc);
-	} else if (local->drop_unencrypted &&
-		   ieee80211_is_data(hdr->frame_control) &&
-		   meta->ethertype != ETH_P_PAE) {
-		if (net_ratelimit()) {
-			printk(KERN_DEBUG "%s: dropped unencrypted TX data "
-			       "frame (drop_unencrypted=1)\n", dev->name);
-		}
-		iface->stats.tx_dropped++;
-		ret = NETDEV_TX_OK;
-		goto fail;
-	}
-
-	if (tx.crypt) {
-		skb = hostap_tx_encrypt(skb, tx.crypt);
-		if (skb == NULL) {
-			printk(KERN_DEBUG "%s: TX - encryption failed\n",
-			       dev->name);
-			ret = NETDEV_TX_OK;
-			goto fail;
-		}
-		meta = (struct hostap_skb_tx_data *) skb->cb;
-		if (meta->magic != HOSTAP_SKB_TX_DATA_MAGIC) {
-			printk(KERN_DEBUG "%s: invalid skb->cb magic (0x%08x, "
-			       "expected 0x%08x) after hostap_tx_encrypt\n",
-			       dev->name, meta->magic,
-			       HOSTAP_SKB_TX_DATA_MAGIC);
-			ret = NETDEV_TX_OK;
-			iface->stats.tx_dropped++;
-			goto fail;
-		}
-	}
-
-	if (local->func->tx == NULL || local->func->tx(skb, dev)) {
-		ret = NETDEV_TX_OK;
-		iface->stats.tx_dropped++;
-	} else {
-		ret = NETDEV_TX_OK;
-		iface->stats.tx_packets++;
-		iface->stats.tx_bytes += skb->len;
-	}
-
- fail:
-	if (ret == NETDEV_TX_OK && skb)
-		dev_kfree_skb(skb);
- tx_exit:
-	if (tx.sta_ptr)
-		hostap_handle_sta_release(tx.sta_ptr);
-	return ret;
-}
-
-
-EXPORT_SYMBOL(hostap_master_start_xmit);