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path: root/drivers/staging/wilc1000/mon.c
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Diffstat (limited to 'drivers/staging/wilc1000/mon.c')
-rw-r--r--drivers/staging/wilc1000/mon.c260
1 files changed, 0 insertions, 260 deletions
diff --git a/drivers/staging/wilc1000/mon.c b/drivers/staging/wilc1000/mon.c
deleted file mode 100644
index 60331417bd98..000000000000
--- a/drivers/staging/wilc1000/mon.c
+++ /dev/null
@@ -1,260 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
- * All rights reserved.
- */
-
-#include "cfg80211.h"
-
-struct wilc_wfi_radiotap_hdr {
- struct ieee80211_radiotap_header hdr;
- u8 rate;
-} __packed;
-
-struct wilc_wfi_radiotap_cb_hdr {
- struct ieee80211_radiotap_header hdr;
- u8 rate;
- u8 dump;
- u16 tx_flags;
-} __packed;
-
-#define TX_RADIOTAP_PRESENT ((1 << IEEE80211_RADIOTAP_RATE) | \
- (1 << IEEE80211_RADIOTAP_TX_FLAGS))
-
-void wilc_wfi_monitor_rx(struct net_device *mon_dev, u8 *buff, u32 size)
-{
- u32 header, pkt_offset;
- struct sk_buff *skb = NULL;
- struct wilc_wfi_radiotap_hdr *hdr;
- struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
-
- if (!mon_dev)
- return;
-
- if (!netif_running(mon_dev))
- return;
-
- /* Get WILC header */
- header = get_unaligned_le32(buff - HOST_HDR_OFFSET);
- /*
- * The packet offset field contain info about what type of management
- * the frame we are dealing with and ack status
- */
- pkt_offset = FIELD_GET(WILC_PKT_HDR_OFFSET_FIELD, header);
-
- if (pkt_offset & IS_MANAGMEMENT_CALLBACK) {
- /* hostapd callback mgmt frame */
-
- skb = dev_alloc_skb(size + sizeof(*cb_hdr));
- if (!skb)
- return;
-
- skb_put_data(skb, buff, size);
-
- cb_hdr = skb_push(skb, sizeof(*cb_hdr));
- memset(cb_hdr, 0, sizeof(*cb_hdr));
-
- cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
-
- cb_hdr->hdr.it_len = cpu_to_le16(sizeof(*cb_hdr));
-
- cb_hdr->hdr.it_present = cpu_to_le32(TX_RADIOTAP_PRESENT);
-
- cb_hdr->rate = 5;
-
- if (pkt_offset & IS_MGMT_STATUS_SUCCES) {
- /* success */
- cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_RTS;
- } else {
- cb_hdr->tx_flags = IEEE80211_RADIOTAP_F_TX_FAIL;
- }
-
- } else {
- skb = dev_alloc_skb(size + sizeof(*hdr));
-
- if (!skb)
- return;
-
- skb_put_data(skb, buff, size);
- hdr = skb_push(skb, sizeof(*hdr));
- memset(hdr, 0, sizeof(struct wilc_wfi_radiotap_hdr));
- hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
- hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
- hdr->hdr.it_present = cpu_to_le32
- (1 << IEEE80211_RADIOTAP_RATE);
- hdr->rate = 5;
- }
-
- skb->dev = mon_dev;
- skb_reset_mac_header(skb);
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- skb->pkt_type = PACKET_OTHERHOST;
- skb->protocol = htons(ETH_P_802_2);
- memset(skb->cb, 0, sizeof(skb->cb));
-
- netif_rx(skb);
-}
-
-struct tx_complete_mon_data {
- int size;
- void *buff;
-};
-
-static void mgmt_tx_complete(void *priv, int status)
-{
- struct tx_complete_mon_data *pv_data = priv;
- /*
- * in case of fully hosting mode, the freeing will be done
- * in response to the cfg packet
- */
- kfree(pv_data->buff);
-
- kfree(pv_data);
-}
-
-static int mon_mgmt_tx(struct net_device *dev, const u8 *buf, size_t len)
-{
- struct tx_complete_mon_data *mgmt_tx = NULL;
-
- if (!dev)
- return -EFAULT;
-
- netif_stop_queue(dev);
- mgmt_tx = kmalloc(sizeof(*mgmt_tx), GFP_ATOMIC);
- if (!mgmt_tx)
- return -ENOMEM;
-
- mgmt_tx->buff = kmemdup(buf, len, GFP_ATOMIC);
- if (!mgmt_tx->buff) {
- kfree(mgmt_tx);
- return -ENOMEM;
- }
-
- mgmt_tx->size = len;
-
- wilc_wlan_txq_add_mgmt_pkt(dev, mgmt_tx, mgmt_tx->buff, mgmt_tx->size,
- mgmt_tx_complete);
-
- netif_wake_queue(dev);
- return 0;
-}
-
-static netdev_tx_t wilc_wfi_mon_xmit(struct sk_buff *skb,
- struct net_device *dev)
-{
- u32 rtap_len, ret = 0;
- struct wilc_wfi_mon_priv *mon_priv;
- struct sk_buff *skb2;
- struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
- u8 srcadd[ETH_ALEN];
- u8 bssid[ETH_ALEN];
-
- mon_priv = netdev_priv(dev);
- if (!mon_priv)
- return -EFAULT;
-
- rtap_len = ieee80211_get_radiotap_len(skb->data);
- if (skb->len < rtap_len)
- return -1;
-
- skb_pull(skb, rtap_len);
-
- if (skb->data[0] == 0xc0 && is_broadcast_ether_addr(&skb->data[4])) {
- skb2 = dev_alloc_skb(skb->len + sizeof(*cb_hdr));
- if (!skb2)
- return -ENOMEM;
-
- skb_put_data(skb2, skb->data, skb->len);
-
- cb_hdr = skb_push(skb2, sizeof(*cb_hdr));
- memset(cb_hdr, 0, sizeof(struct wilc_wfi_radiotap_cb_hdr));
-
- cb_hdr->hdr.it_version = 0; /* PKTHDR_RADIOTAP_VERSION; */
-
- cb_hdr->hdr.it_len = cpu_to_le16(sizeof(*cb_hdr));
-
- cb_hdr->hdr.it_present = cpu_to_le32(TX_RADIOTAP_PRESENT);
-
- cb_hdr->rate = 5;
- cb_hdr->tx_flags = 0x0004;
-
- skb2->dev = dev;
- skb_reset_mac_header(skb2);
- skb2->ip_summed = CHECKSUM_UNNECESSARY;
- skb2->pkt_type = PACKET_OTHERHOST;
- skb2->protocol = htons(ETH_P_802_2);
- memset(skb2->cb, 0, sizeof(skb2->cb));
-
- netif_rx(skb2);
-
- return 0;
- }
- skb->dev = mon_priv->real_ndev;
-
- ether_addr_copy(srcadd, &skb->data[10]);
- ether_addr_copy(bssid, &skb->data[16]);
- /*
- * Identify if data or mgmt packet, if source address and bssid
- * fields are equal send it to mgmt frames handler
- */
- if (!(memcmp(srcadd, bssid, 6))) {
- ret = mon_mgmt_tx(mon_priv->real_ndev, skb->data, skb->len);
- if (ret)
- netdev_err(dev, "fail to mgmt tx\n");
- dev_kfree_skb(skb);
- } else {
- ret = wilc_mac_xmit(skb, mon_priv->real_ndev);
- }
-
- return ret;
-}
-
-static const struct net_device_ops wilc_wfi_netdev_ops = {
- .ndo_start_xmit = wilc_wfi_mon_xmit,
-
-};
-
-struct net_device *wilc_wfi_init_mon_interface(struct wilc *wl,
- const char *name,
- struct net_device *real_dev)
-{
- struct wilc_wfi_mon_priv *priv;
-
- /* If monitor interface is already initialized, return it */
- if (wl->monitor_dev)
- return wl->monitor_dev;
-
- wl->monitor_dev = alloc_etherdev(sizeof(struct wilc_wfi_mon_priv));
- if (!wl->monitor_dev)
- return NULL;
-
- wl->monitor_dev->type = ARPHRD_IEEE80211_RADIOTAP;
- strncpy(wl->monitor_dev->name, name, IFNAMSIZ);
- wl->monitor_dev->name[IFNAMSIZ - 1] = 0;
- wl->monitor_dev->netdev_ops = &wilc_wfi_netdev_ops;
- wl->monitor_dev->needs_free_netdev = true;
-
- if (register_netdevice(wl->monitor_dev)) {
- netdev_err(real_dev, "register_netdevice failed\n");
- return NULL;
- }
- priv = netdev_priv(wl->monitor_dev);
- if (!priv)
- return NULL;
-
- priv->real_ndev = real_dev;
-
- return wl->monitor_dev;
-}
-
-void wilc_wfi_deinit_mon_interface(struct wilc *wl, bool rtnl_locked)
-{
- if (!wl->monitor_dev)
- return;
-
- if (rtnl_locked)
- unregister_netdevice(wl->monitor_dev);
- else
- unregister_netdev(wl->monitor_dev);
- wl->monitor_dev = NULL;
-}
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-19 14:03:55 +0300