555 lines
16 KiB
C
555 lines
16 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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#include <linux/slab.h>
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#include <linux/export.h>
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#include <linux/etherdevice.h>
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#include "hostap_80211.h"
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#include "hostap_common.h"
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#include "hostap_wlan.h"
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#include "hostap.h"
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#include "hostap_ap.h"
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/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
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/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
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static unsigned char rfc1042_header[] =
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{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
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/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
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static unsigned char bridge_tunnel_header[] =
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{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
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/* No encapsulation header if EtherType < 0x600 (=length) */
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void hostap_dump_tx_80211(const char *name, struct sk_buff *skb)
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{
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struct ieee80211_hdr *hdr;
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u16 fc;
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hdr = (struct ieee80211_hdr *) skb->data;
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printk(KERN_DEBUG "%s: TX len=%d jiffies=%ld\n",
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name, skb->len, jiffies);
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if (skb->len < 2)
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return;
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fc = le16_to_cpu(hdr->frame_control);
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printk(KERN_DEBUG " FC=0x%04x (type=%d:%d)%s%s",
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fc, (fc & IEEE80211_FCTL_FTYPE) >> 2,
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(fc & IEEE80211_FCTL_STYPE) >> 4,
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fc & IEEE80211_FCTL_TODS ? " [ToDS]" : "",
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fc & IEEE80211_FCTL_FROMDS ? " [FromDS]" : "");
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if (skb->len < IEEE80211_DATA_HDR3_LEN) {
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printk("\n");
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return;
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}
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printk(" dur=0x%04x seq=0x%04x\n", le16_to_cpu(hdr->duration_id),
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le16_to_cpu(hdr->seq_ctrl));
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printk(KERN_DEBUG " A1=%pM", hdr->addr1);
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printk(" A2=%pM", hdr->addr2);
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printk(" A3=%pM", hdr->addr3);
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if (skb->len >= 30)
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printk(" A4=%pM", hdr->addr4);
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printk("\n");
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}
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/* hard_start_xmit function for data interfaces (wlan#, wlan#wds#, wlan#sta)
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* Convert Ethernet header into a suitable IEEE 802.11 header depending on
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* device configuration. */
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netdev_tx_t hostap_data_start_xmit(struct sk_buff *skb,
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struct net_device *dev)
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{
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struct hostap_interface *iface;
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local_info_t *local;
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int need_headroom, need_tailroom = 0;
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struct ieee80211_hdr hdr;
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u16 fc, ethertype = 0;
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enum {
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WDS_NO = 0, WDS_OWN_FRAME, WDS_COMPLIANT_FRAME
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} use_wds = WDS_NO;
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u8 *encaps_data;
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int hdr_len, encaps_len, skip_header_bytes;
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int to_assoc_ap = 0;
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struct hostap_skb_tx_data *meta;
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iface = netdev_priv(dev);
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local = iface->local;
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if (skb->len < ETH_HLEN) {
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printk(KERN_DEBUG "%s: hostap_data_start_xmit: short skb "
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"(len=%d)\n", dev->name, skb->len);
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kfree_skb(skb);
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return NETDEV_TX_OK;
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}
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if (local->ddev != dev) {
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use_wds = (local->iw_mode == IW_MODE_MASTER &&
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!(local->wds_type & HOSTAP_WDS_STANDARD_FRAME)) ?
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WDS_OWN_FRAME : WDS_COMPLIANT_FRAME;
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if (dev == local->stadev) {
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to_assoc_ap = 1;
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use_wds = WDS_NO;
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} else if (dev == local->apdev) {
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printk(KERN_DEBUG "%s: prism2_tx: trying to use "
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"AP device with Ethernet net dev\n", dev->name);
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kfree_skb(skb);
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return NETDEV_TX_OK;
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}
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} else {
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if (local->iw_mode == IW_MODE_REPEAT) {
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printk(KERN_DEBUG "%s: prism2_tx: trying to use "
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"non-WDS link in Repeater mode\n", dev->name);
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kfree_skb(skb);
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return NETDEV_TX_OK;
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} else if (local->iw_mode == IW_MODE_INFRA &&
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(local->wds_type & HOSTAP_WDS_AP_CLIENT) &&
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!ether_addr_equal(skb->data + ETH_ALEN, dev->dev_addr)) {
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/* AP client mode: send frames with foreign src addr
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* using 4-addr WDS frames */
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use_wds = WDS_COMPLIANT_FRAME;
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}
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}
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/* Incoming skb->data: dst_addr[6], src_addr[6], proto[2], payload
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* ==>
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* Prism2 TX frame with 802.11 header:
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* txdesc (address order depending on used mode; includes dst_addr and
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* src_addr), possible encapsulation (RFC1042/Bridge-Tunnel;
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* proto[2], payload {, possible addr4[6]} */
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ethertype = (skb->data[12] << 8) | skb->data[13];
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memset(&hdr, 0, sizeof(hdr));
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/* Length of data after IEEE 802.11 header */
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encaps_data = NULL;
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encaps_len = 0;
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skip_header_bytes = ETH_HLEN;
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if (ethertype == ETH_P_AARP || ethertype == ETH_P_IPX) {
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encaps_data = bridge_tunnel_header;
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encaps_len = sizeof(bridge_tunnel_header);
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skip_header_bytes -= 2;
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} else if (ethertype >= 0x600) {
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encaps_data = rfc1042_header;
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encaps_len = sizeof(rfc1042_header);
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skip_header_bytes -= 2;
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}
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fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
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hdr_len = IEEE80211_DATA_HDR3_LEN;
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if (use_wds != WDS_NO) {
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/* Note! Prism2 station firmware has problems with sending real
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* 802.11 frames with four addresses; until these problems can
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* be fixed or worked around, 4-addr frames needed for WDS are
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* using incompatible format: FromDS flag is not set and the
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* fourth address is added after the frame payload; it is
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* assumed, that the receiving station knows how to handle this
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* frame format */
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if (use_wds == WDS_COMPLIANT_FRAME) {
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fc |= IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS;
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/* From&To DS: Addr1 = RA, Addr2 = TA, Addr3 = DA,
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* Addr4 = SA */
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skb_copy_from_linear_data_offset(skb, ETH_ALEN,
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&hdr.addr4, ETH_ALEN);
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hdr_len += ETH_ALEN;
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} else {
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/* bogus 4-addr format to workaround Prism2 station
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* f/w bug */
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fc |= IEEE80211_FCTL_TODS;
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/* From DS: Addr1 = DA (used as RA),
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* Addr2 = BSSID (used as TA), Addr3 = SA (used as DA),
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*/
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/* SA from skb->data + ETH_ALEN will be added after
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* frame payload; use hdr.addr4 as a temporary buffer
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*/
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skb_copy_from_linear_data_offset(skb, ETH_ALEN,
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&hdr.addr4, ETH_ALEN);
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need_tailroom += ETH_ALEN;
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}
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/* send broadcast and multicast frames to broadcast RA, if
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* configured; otherwise, use unicast RA of the WDS link */
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if ((local->wds_type & HOSTAP_WDS_BROADCAST_RA) &&
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is_multicast_ether_addr(skb->data))
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eth_broadcast_addr(hdr.addr1);
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else if (iface->type == HOSTAP_INTERFACE_WDS)
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memcpy(&hdr.addr1, iface->u.wds.remote_addr,
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ETH_ALEN);
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else
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memcpy(&hdr.addr1, local->bssid, ETH_ALEN);
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memcpy(&hdr.addr2, dev->dev_addr, ETH_ALEN);
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skb_copy_from_linear_data(skb, &hdr.addr3, ETH_ALEN);
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} else if (local->iw_mode == IW_MODE_MASTER && !to_assoc_ap) {
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fc |= IEEE80211_FCTL_FROMDS;
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/* From DS: Addr1 = DA, Addr2 = BSSID, Addr3 = SA */
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skb_copy_from_linear_data(skb, &hdr.addr1, ETH_ALEN);
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memcpy(&hdr.addr2, dev->dev_addr, ETH_ALEN);
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skb_copy_from_linear_data_offset(skb, ETH_ALEN, &hdr.addr3,
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ETH_ALEN);
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} else if (local->iw_mode == IW_MODE_INFRA || to_assoc_ap) {
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fc |= IEEE80211_FCTL_TODS;
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/* To DS: Addr1 = BSSID, Addr2 = SA, Addr3 = DA */
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memcpy(&hdr.addr1, to_assoc_ap ?
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local->assoc_ap_addr : local->bssid, ETH_ALEN);
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skb_copy_from_linear_data_offset(skb, ETH_ALEN, &hdr.addr2,
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ETH_ALEN);
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skb_copy_from_linear_data(skb, &hdr.addr3, ETH_ALEN);
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} else if (local->iw_mode == IW_MODE_ADHOC) {
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/* not From/To DS: Addr1 = DA, Addr2 = SA, Addr3 = BSSID */
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skb_copy_from_linear_data(skb, &hdr.addr1, ETH_ALEN);
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skb_copy_from_linear_data_offset(skb, ETH_ALEN, &hdr.addr2,
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ETH_ALEN);
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memcpy(&hdr.addr3, local->bssid, ETH_ALEN);
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}
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hdr.frame_control = cpu_to_le16(fc);
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skb_pull(skb, skip_header_bytes);
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need_headroom = local->func->need_tx_headroom + hdr_len + encaps_len;
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if (skb_tailroom(skb) < need_tailroom) {
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skb = skb_unshare(skb, GFP_ATOMIC);
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if (skb == NULL) {
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iface->stats.tx_dropped++;
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return NETDEV_TX_OK;
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}
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if (pskb_expand_head(skb, need_headroom, need_tailroom,
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GFP_ATOMIC)) {
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kfree_skb(skb);
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iface->stats.tx_dropped++;
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return NETDEV_TX_OK;
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}
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} else if (skb_headroom(skb) < need_headroom) {
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struct sk_buff *tmp = skb;
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skb = skb_realloc_headroom(skb, need_headroom);
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kfree_skb(tmp);
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if (skb == NULL) {
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iface->stats.tx_dropped++;
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return NETDEV_TX_OK;
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}
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} else {
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skb = skb_unshare(skb, GFP_ATOMIC);
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if (skb == NULL) {
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iface->stats.tx_dropped++;
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return NETDEV_TX_OK;
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}
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}
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if (encaps_data)
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memcpy(skb_push(skb, encaps_len), encaps_data, encaps_len);
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memcpy(skb_push(skb, hdr_len), &hdr, hdr_len);
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if (use_wds == WDS_OWN_FRAME) {
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skb_put_data(skb, &hdr.addr4, ETH_ALEN);
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}
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iface->stats.tx_packets++;
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iface->stats.tx_bytes += skb->len;
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skb_reset_mac_header(skb);
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meta = (struct hostap_skb_tx_data *) skb->cb;
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memset(meta, 0, sizeof(*meta));
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meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
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if (use_wds)
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meta->flags |= HOSTAP_TX_FLAGS_WDS;
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meta->ethertype = ethertype;
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meta->iface = iface;
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/* Send IEEE 802.11 encapsulated frame using the master radio device */
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skb->dev = local->dev;
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dev_queue_xmit(skb);
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return NETDEV_TX_OK;
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}
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/* hard_start_xmit function for hostapd wlan#ap interfaces */
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netdev_tx_t hostap_mgmt_start_xmit(struct sk_buff *skb,
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struct net_device *dev)
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{
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struct hostap_interface *iface;
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local_info_t *local;
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struct hostap_skb_tx_data *meta;
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struct ieee80211_hdr *hdr;
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u16 fc;
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iface = netdev_priv(dev);
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local = iface->local;
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if (skb->len < 10) {
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printk(KERN_DEBUG "%s: hostap_mgmt_start_xmit: short skb "
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"(len=%d)\n", dev->name, skb->len);
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kfree_skb(skb);
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return NETDEV_TX_OK;
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}
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iface->stats.tx_packets++;
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iface->stats.tx_bytes += skb->len;
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meta = (struct hostap_skb_tx_data *) skb->cb;
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memset(meta, 0, sizeof(*meta));
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meta->magic = HOSTAP_SKB_TX_DATA_MAGIC;
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meta->iface = iface;
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if (skb->len >= IEEE80211_DATA_HDR3_LEN + sizeof(rfc1042_header) + 2) {
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hdr = (struct ieee80211_hdr *) skb->data;
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fc = le16_to_cpu(hdr->frame_control);
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if (ieee80211_is_data(hdr->frame_control) &&
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(fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_DATA) {
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u8 *pos = &skb->data[IEEE80211_DATA_HDR3_LEN +
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sizeof(rfc1042_header)];
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meta->ethertype = (pos[0] << 8) | pos[1];
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}
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}
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/* Send IEEE 802.11 encapsulated frame using the master radio device */
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skb->dev = local->dev;
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dev_queue_xmit(skb);
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return NETDEV_TX_OK;
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}
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/* Called only from software IRQ */
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static struct sk_buff * hostap_tx_encrypt(struct sk_buff *skb,
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struct lib80211_crypt_data *crypt)
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{
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struct hostap_interface *iface;
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local_info_t *local;
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struct ieee80211_hdr *hdr;
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int prefix_len, postfix_len, hdr_len, res;
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iface = netdev_priv(skb->dev);
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local = iface->local;
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if (skb->len < IEEE80211_DATA_HDR3_LEN) {
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kfree_skb(skb);
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return NULL;
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}
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if (local->tkip_countermeasures &&
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strcmp(crypt->ops->name, "TKIP") == 0) {
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hdr = (struct ieee80211_hdr *) skb->data;
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if (net_ratelimit()) {
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||
|
|
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);
|