dhd_linux.c 26.8 KB
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/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/kernel.h>
#include <linux/etherdevice.h>
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#include <linux/module.h>
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#include <net/cfg80211.h>
#include <net/rtnetlink.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>

#include "dhd.h"
#include "dhd_bus.h"
#include "dhd_dbg.h"
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#include "fwil_types.h"
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#include "p2p.h"
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#include "wl_cfg80211.h"
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#include "fwil.h"
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#include "fwsignal.h"
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#include "proto.h"
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MODULE_AUTHOR("Broadcom Corporation");
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MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
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MODULE_LICENSE("Dual BSD/GPL");

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#define MAX_WAIT_FOR_8021X_TX		50	/* msecs */
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/* AMPDU rx reordering definitions */
#define BRCMF_RXREORDER_FLOWID_OFFSET		0
#define BRCMF_RXREORDER_MAXIDX_OFFSET		2
#define BRCMF_RXREORDER_FLAGS_OFFSET		4
#define BRCMF_RXREORDER_CURIDX_OFFSET		6
#define BRCMF_RXREORDER_EXPIDX_OFFSET		8

#define BRCMF_RXREORDER_DEL_FLOW		0x01
#define BRCMF_RXREORDER_FLUSH_ALL		0x02
#define BRCMF_RXREORDER_CURIDX_VALID		0x04
#define BRCMF_RXREORDER_EXPIDX_VALID		0x08
#define BRCMF_RXREORDER_NEW_HOLE		0x10

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/* Error bits */
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int brcmf_msg_level;
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module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR);
MODULE_PARM_DESC(debug, "level of debug output");
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/* P2P0 enable */
static int brcmf_p2p_enable;
#ifdef CONFIG_BRCMDBG
module_param_named(p2pon, brcmf_p2p_enable, int, 0);
MODULE_PARM_DESC(p2pon, "enable p2p management functionality");
#endif
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char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
{
	if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
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		brcmf_err("ifidx %d out of range\n", ifidx);
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		return "<if_bad>";
	}

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	if (drvr->iflist[ifidx] == NULL) {
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		brcmf_err("null i/f %d\n", ifidx);
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		return "<if_null>";
	}

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	if (drvr->iflist[ifidx]->ndev)
		return drvr->iflist[ifidx]->ndev->name;
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	return "<if_none>";
}

static void _brcmf_set_multicast_list(struct work_struct *work)
{
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	struct brcmf_if *ifp;
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	struct net_device *ndev;
	struct netdev_hw_addr *ha;
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	u32 cmd_value, cnt;
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	__le32 cnt_le;
	char *buf, *bufp;
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	u32 buflen;
	s32 err;
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	ifp = container_of(work, struct brcmf_if, multicast_work);
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	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
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	ndev = ifp->ndev;
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	/* Determine initial value of allmulti flag */
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	cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
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	/* Send down the multicast list first. */
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	cnt = netdev_mc_count(ndev);
	buflen = sizeof(cnt) + (cnt * ETH_ALEN);
	buf = kmalloc(buflen, GFP_ATOMIC);
	if (!buf)
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		return;
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	bufp = buf;
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	cnt_le = cpu_to_le32(cnt);
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	memcpy(bufp, &cnt_le, sizeof(cnt_le));
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	bufp += sizeof(cnt_le);

	netdev_for_each_mc_addr(ha, ndev) {
		if (!cnt)
			break;
		memcpy(bufp, ha->addr, ETH_ALEN);
		bufp += ETH_ALEN;
		cnt--;
	}

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	err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
	if (err < 0) {
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		brcmf_err("Setting mcast_list failed, %d\n", err);
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		cmd_value = cnt ? true : cmd_value;
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	}

	kfree(buf);

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	/*
	 * Now send the allmulti setting.  This is based on the setting in the
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	 * net_device flags, but might be modified above to be turned on if we
	 * were trying to set some addresses and dongle rejected it...
	 */
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	err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
	if (err < 0)
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		brcmf_err("Setting allmulti failed, %d\n", err);
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	/*Finally, pick up the PROMISC flag */
	cmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value);
	if (err < 0)
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		brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
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			  err);
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}

static void
_brcmf_set_mac_address(struct work_struct *work)
{
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	struct brcmf_if *ifp;
	s32 err;
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	ifp = container_of(work, struct brcmf_if, setmacaddr_work);
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	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
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	err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
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				       ETH_ALEN);
	if (err < 0) {
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		brcmf_err("Setting cur_etheraddr failed, %d\n", err);
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	} else {
		brcmf_dbg(TRACE, "MAC address updated to %pM\n",
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			  ifp->mac_addr);
		memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
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	}
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}

static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
{
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	struct brcmf_if *ifp = netdev_priv(ndev);
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	struct sockaddr *sa = (struct sockaddr *)addr;

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	memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
	schedule_work(&ifp->setmacaddr_work);
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	return 0;
}

static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
{
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	struct brcmf_if *ifp = netdev_priv(ndev);
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	schedule_work(&ifp->multicast_work);
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}

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static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
					   struct net_device *ndev)
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{
	int ret;
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	struct brcmf_if *ifp = netdev_priv(ndev);
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	struct brcmf_pub *drvr = ifp->drvr;
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	struct ethhdr *eh = (struct ethhdr *)(skb->data);
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	brcmf_dbg(DATA, "Enter, idx=%d\n", ifp->bssidx);
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	/* Can the device send data? */
	if (drvr->bus_if->state != BRCMF_BUS_DATA) {
		brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
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		netif_stop_queue(ndev);
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		dev_kfree_skb(skb);
		ret = -ENODEV;
		goto done;
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	}

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	if (!drvr->iflist[ifp->bssidx]) {
		brcmf_err("bad ifidx %d\n", ifp->bssidx);
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		netif_stop_queue(ndev);
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		dev_kfree_skb(skb);
		ret = -ENODEV;
		goto done;
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	}

	/* Make sure there's enough room for any header */
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	if (skb_headroom(skb) < drvr->hdrlen) {
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		struct sk_buff *skb2;

		brcmf_dbg(INFO, "%s: insufficient headroom\n",
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			  brcmf_ifname(drvr, ifp->bssidx));
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		drvr->bus_if->tx_realloc++;
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		skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
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		dev_kfree_skb(skb);
		skb = skb2;
		if (skb == NULL) {
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			brcmf_err("%s: skb_realloc_headroom failed\n",
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				  brcmf_ifname(drvr, ifp->bssidx));
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			ret = -ENOMEM;
			goto done;
		}
	}

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	/* validate length for ether packet */
	if (skb->len < sizeof(*eh)) {
		ret = -EINVAL;
		dev_kfree_skb(skb);
		goto done;
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	}

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	if (eh->h_proto == htons(ETH_P_PAE))
		atomic_inc(&ifp->pend_8021x_cnt);

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	ret = brcmf_fws_process_skb(ifp, skb);
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done:
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	if (ret) {
		ifp->stats.tx_dropped++;
	} else {
		ifp->stats.tx_packets++;
		ifp->stats.tx_bytes += skb->len;
	}
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	/* Return ok: we always eat the packet */
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	return NETDEV_TX_OK;
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}

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void brcmf_txflowblock_if(struct brcmf_if *ifp,
			  enum brcmf_netif_stop_reason reason, bool state)
{
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	unsigned long flags;

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	if (!ifp || !ifp->ndev)
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		return;

	brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
		  ifp->bssidx, ifp->netif_stop, reason, state);
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	spin_lock_irqsave(&ifp->netif_stop_lock, flags);
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	if (state) {
		if (!ifp->netif_stop)
			netif_stop_queue(ifp->ndev);
		ifp->netif_stop |= reason;
	} else {
		ifp->netif_stop &= ~reason;
		if (!ifp->netif_stop)
			netif_wake_queue(ifp->ndev);
	}
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	spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
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}

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void brcmf_txflowblock(struct device *dev, bool state)
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{
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	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;
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	brcmf_dbg(TRACE, "Enter\n");

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	brcmf_fws_bus_blocked(drvr, state);
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}

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static void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb)
{
	skb->dev = ifp->ndev;
	skb->protocol = eth_type_trans(skb, skb->dev);

	if (skb->pkt_type == PACKET_MULTICAST)
		ifp->stats.multicast++;

	/* Process special event packets */
	brcmf_fweh_process_skb(ifp->drvr, skb);

	if (!(ifp->ndev->flags & IFF_UP)) {
		brcmu_pkt_buf_free_skb(skb);
		return;
	}

	ifp->stats.rx_bytes += skb->len;
	ifp->stats.rx_packets++;

	brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol));
	if (in_interrupt())
		netif_rx(skb);
	else
		/* If the receive is not processed inside an ISR,
		 * the softirqd must be woken explicitly to service
		 * the NET_RX_SOFTIRQ.  This is handled by netif_rx_ni().
		 */
		netif_rx_ni(skb);
}

static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
					 u8 start, u8 end,
					 struct sk_buff_head *skb_list)
{
	/* initialize return list */
	__skb_queue_head_init(skb_list);

	if (rfi->pend_pkts == 0) {
		brcmf_dbg(INFO, "no packets in reorder queue\n");
		return;
	}

	do {
		if (rfi->pktslots[start]) {
			__skb_queue_tail(skb_list, rfi->pktslots[start]);
			rfi->pktslots[start] = NULL;
		}
		start++;
		if (start > rfi->max_idx)
			start = 0;
	} while (start != end);
	rfi->pend_pkts -= skb_queue_len(skb_list);
}

static void brcmf_rxreorder_process_info(struct brcmf_if *ifp, u8 *reorder_data,
					 struct sk_buff *pkt)
{
	u8 flow_id, max_idx, cur_idx, exp_idx, end_idx;
	struct brcmf_ampdu_rx_reorder *rfi;
	struct sk_buff_head reorder_list;
	struct sk_buff *pnext;
	u8 flags;
	u32 buf_size;

	flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET];
	flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET];

	/* validate flags and flow id */
	if (flags == 0xFF) {
		brcmf_err("invalid flags...so ignore this packet\n");
		brcmf_netif_rx(ifp, pkt);
		return;
	}

	rfi = ifp->drvr->reorder_flows[flow_id];
	if (flags & BRCMF_RXREORDER_DEL_FLOW) {
		brcmf_dbg(INFO, "flow-%d: delete\n",
			  flow_id);

		if (rfi == NULL) {
			brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
				  flow_id);
			brcmf_netif_rx(ifp, pkt);
			return;
		}

		brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx,
					     &reorder_list);
		/* add the last packet */
		__skb_queue_tail(&reorder_list, pkt);
		kfree(rfi);
		ifp->drvr->reorder_flows[flow_id] = NULL;
		goto netif_rx;
	}
	/* from here on we need a flow reorder instance */
	if (rfi == NULL) {
		buf_size = sizeof(*rfi);
		max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];

		buf_size += (max_idx + 1) * sizeof(pkt);

		/* allocate space for flow reorder info */
		brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n",
			  flow_id, max_idx);
		rfi = kzalloc(buf_size, GFP_ATOMIC);
		if (rfi == NULL) {
			brcmf_err("failed to alloc buffer\n");
			brcmf_netif_rx(ifp, pkt);
			return;
		}

		ifp->drvr->reorder_flows[flow_id] = rfi;
		rfi->pktslots = (struct sk_buff **)(rfi+1);
		rfi->max_idx = max_idx;
	}
	if (flags & BRCMF_RXREORDER_NEW_HOLE)  {
		if (rfi->pend_pkts) {
			brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx,
						     rfi->exp_idx,
						     &reorder_list);
			WARN_ON(rfi->pend_pkts);
		} else {
			__skb_queue_head_init(&reorder_list);
		}
		rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
		rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
		rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
		rfi->pktslots[rfi->cur_idx] = pkt;
		rfi->pend_pkts++;
		brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n",
			  flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts);
	} else if (flags & BRCMF_RXREORDER_CURIDX_VALID) {
		cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
		exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];

		if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) {
			/* still in the current hole */
			/* enqueue the current on the buffer chain */
			if (rfi->pktslots[cur_idx] != NULL) {
				brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n");
				brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
				rfi->pktslots[cur_idx] = NULL;
			}
			rfi->pktslots[cur_idx] = pkt;
			rfi->pend_pkts++;
			rfi->cur_idx = cur_idx;
			brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n",
				  flow_id, cur_idx, exp_idx, rfi->pend_pkts);

			/* can return now as there is no reorder
			 * list to process.
			 */
			return;
		}
		if (rfi->exp_idx == cur_idx) {
			if (rfi->pktslots[cur_idx] != NULL) {
				brcmf_dbg(INFO, "error buffer pending..free it\n");
				brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
				rfi->pktslots[cur_idx] = NULL;
			}
			rfi->pktslots[cur_idx] = pkt;
			rfi->pend_pkts++;

			/* got the expected one. flush from current to expected
			 * and update expected
			 */
			brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n",
				  flow_id, cur_idx, exp_idx, rfi->pend_pkts);

			rfi->cur_idx = cur_idx;
			rfi->exp_idx = exp_idx;

			brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx,
						     &reorder_list);
			brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n",
				  flow_id, skb_queue_len(&reorder_list),
				  rfi->pend_pkts);
		} else {
			u8 end_idx;

			brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n",
				  flow_id, flags, rfi->cur_idx, rfi->exp_idx,
				  cur_idx, exp_idx);
			if (flags & BRCMF_RXREORDER_FLUSH_ALL)
				end_idx = rfi->exp_idx;
			else
				end_idx = exp_idx;

			/* flush pkts first */
			brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
						     &reorder_list);

			if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) {
				__skb_queue_tail(&reorder_list, pkt);
			} else {
				rfi->pktslots[cur_idx] = pkt;
				rfi->pend_pkts++;
			}
			rfi->exp_idx = exp_idx;
			rfi->cur_idx = cur_idx;
		}
	} else {
		/* explicity window move updating the expected index */
		exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];

		brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n",
			  flow_id, flags, rfi->exp_idx, exp_idx);
		if (flags & BRCMF_RXREORDER_FLUSH_ALL)
			end_idx =  rfi->exp_idx;
		else
			end_idx =  exp_idx;

		brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
					     &reorder_list);
		__skb_queue_tail(&reorder_list, pkt);
		/* set the new expected idx */
		rfi->exp_idx = exp_idx;
	}
netif_rx:
	skb_queue_walk_safe(&reorder_list, pkt, pnext) {
		__skb_unlink(pkt, &reorder_list);
		brcmf_netif_rx(ifp, pkt);
	}
}

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void brcmf_rx_frame(struct device *dev, struct sk_buff *skb)
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{
	struct brcmf_if *ifp;
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	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;
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	struct brcmf_skb_reorder_data *rd;
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	u8 ifidx;
	int ret;
523

524
	brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
525

526
527
528
	/* process and remove protocol-specific header */
	ret = brcmf_proto_hdrpull(drvr, true, &ifidx, skb);
	ifp = drvr->iflist[ifidx];
529

530
531
532
533
534
	if (ret || !ifp || !ifp->ndev) {
		if ((ret != -ENODATA) && ifp)
			ifp->stats.rx_errors++;
		brcmu_pkt_buf_free_skb(skb);
		return;
535
	}
536
537
538
539
540
541

	rd = (struct brcmf_skb_reorder_data *)skb->cb;
	if (rd->reorder)
		brcmf_rxreorder_process_info(ifp, rd->reorder, skb);
	else
		brcmf_netif_rx(ifp, skb);
542
543
}

544
void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp, u8 ifidx,
545
		      bool success)
546
{
547
	struct brcmf_if *ifp;
548
549
550
	struct ethhdr *eh;
	u16 type;

551
552
	ifp = drvr->iflist[ifidx];
	if (!ifp)
553
		goto done;
554

555
556
	eh = (struct ethhdr *)(txp->data);
	type = ntohs(eh->h_proto);
557

558
559
560
561
	if (type == ETH_P_PAE) {
		atomic_dec(&ifp->pend_8021x_cnt);
		if (waitqueue_active(&ifp->pend_8021x_wait))
			wake_up(&ifp->pend_8021x_wait);
562
	}
563

564
565
	if (!success)
		ifp->stats.tx_errors++;
566
567
done:
	brcmu_pkt_buf_free_skb(txp);
568
}
569

570
571
572
573
void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
{
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;
574
	u8 ifidx;
575

576
577
578
579
580
	/* await txstatus signal for firmware if active */
	if (brcmf_fws_fc_active(drvr->fws)) {
		if (!success)
			brcmf_fws_bustxfail(drvr->fws, txp);
	} else {
581
582
583
584
		if (brcmf_proto_hdrpull(drvr, false, &ifidx, txp))
			brcmu_pkt_buf_free_skb(txp);
		else
			brcmf_txfinalize(drvr, txp, ifidx, success);
585
	}
586
587
588
589
}

static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
{
590
	struct brcmf_if *ifp = netdev_priv(ndev);
591

592
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
593
594
595
596
597
598
599

	return &ifp->stats;
}

static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
				    struct ethtool_drvinfo *info)
{
600
	struct brcmf_if *ifp = netdev_priv(ndev);
601
	struct brcmf_pub *drvr = ifp->drvr;
602

603
	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
604
605
	snprintf(info->version, sizeof(info->version), "n/a");
	strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
606
607
	strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
		sizeof(info->bus_info));
608
609
}

610
611
static const struct ethtool_ops brcmf_ethtool_ops = {
	.get_drvinfo = brcmf_ethtool_get_drvinfo,
612
613
614
615
};

static int brcmf_netdev_stop(struct net_device *ndev)
{
616
	struct brcmf_if *ifp = netdev_priv(ndev);
617

618
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
619

620
	brcmf_cfg80211_down(ndev);
621

622
623
624
625
626
627
628
629
	/* Set state and stop OS transmissions */
	netif_stop_queue(ndev);

	return 0;
}

static int brcmf_netdev_open(struct net_device *ndev)
{
630
	struct brcmf_if *ifp = netdev_priv(ndev);
631
	struct brcmf_pub *drvr = ifp->drvr;
632
	struct brcmf_bus *bus_if = drvr->bus_if;
633
634
	u32 toe_ol;

635
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
636

637
638
	/* If bus is not ready, can't continue */
	if (bus_if->state != BRCMF_BUS_DATA) {
639
		brcmf_err("failed bus is not ready\n");
640
641
		return -EAGAIN;
	}
642

643
	atomic_set(&ifp->pend_8021x_cnt, 0);
644

645
646
647
	/* Get current TOE mode from dongle */
	if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0
	    && (toe_ol & TOE_TX_CSUM_OL) != 0)
648
		ndev->features |= NETIF_F_IP_CSUM;
649
	else
650
		ndev->features &= ~NETIF_F_IP_CSUM;
651

652
	if (brcmf_cfg80211_up(ndev)) {
653
		brcmf_err("failed to bring up cfg80211\n");
654
		return -EIO;
655
656
	}

657
658
659
	/* Allow transmit calls */
	netif_start_queue(ndev);
	return 0;
660
661
}

662
663
664
665
666
667
668
669
670
static const struct net_device_ops brcmf_netdev_ops_pri = {
	.ndo_open = brcmf_netdev_open,
	.ndo_stop = brcmf_netdev_stop,
	.ndo_get_stats = brcmf_netdev_get_stats,
	.ndo_start_xmit = brcmf_netdev_start_xmit,
	.ndo_set_mac_address = brcmf_netdev_set_mac_address,
	.ndo_set_rx_mode = brcmf_netdev_set_multicast_list
};

671
int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
672
{
673
	struct brcmf_pub *drvr = ifp->drvr;
674
	struct net_device *ndev;
675
	s32 err;
676

677
	brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
678
		  ifp->mac_addr);
679
	ndev = ifp->ndev;
680

681
	/* set appropriate operations */
682
	ndev->netdev_ops = &brcmf_netdev_ops_pri;
683

684
	ndev->hard_header_len += drvr->hdrlen;
685
686
687
688
689
	ndev->ethtool_ops = &brcmf_ethtool_ops;

	drvr->rxsz = ndev->mtu + ndev->hard_header_len +
			      drvr->hdrlen;

690
691
	/* set the mac address */
	memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
692

693
694
695
	INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
	INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);

696
697
698
699
700
	if (rtnl_locked)
		err = register_netdevice(ndev);
	else
		err = register_netdev(ndev);
	if (err != 0) {
701
		brcmf_err("couldn't register the net device\n");
702
703
704
705
706
		goto fail;
	}

	brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);

707
	ndev->destructor = brcmf_cfg80211_free_netdev;
708
709
710
	return 0;

fail:
711
	drvr->iflist[ifp->bssidx] = NULL;
712
	ndev->netdev_ops = NULL;
713
	free_netdev(ndev);
714
715
716
	return -EBADE;
}

717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
static int brcmf_net_p2p_open(struct net_device *ndev)
{
	brcmf_dbg(TRACE, "Enter\n");

	return brcmf_cfg80211_up(ndev);
}

static int brcmf_net_p2p_stop(struct net_device *ndev)
{
	brcmf_dbg(TRACE, "Enter\n");

	return brcmf_cfg80211_down(ndev);
}

static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb,
					    struct net_device *ndev)
{
	if (skb)
		dev_kfree_skb_any(skb);

	return NETDEV_TX_OK;
}

static const struct net_device_ops brcmf_netdev_ops_p2p = {
	.ndo_open = brcmf_net_p2p_open,
	.ndo_stop = brcmf_net_p2p_stop,
	.ndo_start_xmit = brcmf_net_p2p_start_xmit
};

static int brcmf_net_p2p_attach(struct brcmf_if *ifp)
{
	struct net_device *ndev;

	brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
		  ifp->mac_addr);
	ndev = ifp->ndev;

	ndev->netdev_ops = &brcmf_netdev_ops_p2p;

	/* set the mac address */
	memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);

	if (register_netdev(ndev) != 0) {
		brcmf_err("couldn't register the p2p net device\n");
		goto fail;
	}

	brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);

	return 0;

fail:
769
770
771
	ifp->drvr->iflist[ifp->bssidx] = NULL;
	ndev->netdev_ops = NULL;
	free_netdev(ndev);
772
773
774
	return -EBADE;
}

775
776
struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
			      char *name, u8 *mac_addr)
777
778
{
	struct brcmf_if *ifp;
779
	struct net_device *ndev;
780

781
	brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
782

783
	ifp = drvr->iflist[bssidx];
784
785
786
787
788
	/*
	 * Delete the existing interface before overwriting it
	 * in case we missed the BRCMF_E_IF_DEL event.
	 */
	if (ifp) {
789
		brcmf_err("ERROR: netdev:%s already exists\n",
790
			  ifp->ndev->name);
791
792
793
794
		if (ifidx) {
			netif_stop_queue(ifp->ndev);
			unregister_netdev(ifp->ndev);
			free_netdev(ifp->ndev);
795
			drvr->iflist[bssidx] = NULL;
796
		} else {
797
			brcmf_err("ignore IF event\n");
798
799
			return ERR_PTR(-EINVAL);
		}
800
	}
801

802
803
804
805
	if (!brcmf_p2p_enable && bssidx == 1) {
		/* this is P2P_DEVICE interface */
		brcmf_dbg(INFO, "allocate non-netdev interface\n");
		ifp = kzalloc(sizeof(*ifp), GFP_KERNEL);
806
807
		if (!ifp)
			return ERR_PTR(-ENOMEM);
808
809
810
811
	} else {
		brcmf_dbg(INFO, "allocate netdev interface\n");
		/* Allocate netdev, including space for private structure */
		ndev = alloc_netdev(sizeof(*ifp), name, ether_setup);
812
		if (!ndev)
813
814
815
816
			return ERR_PTR(-ENOMEM);

		ifp = netdev_priv(ndev);
		ifp->ndev = ndev;
817
	}
818

819
	ifp->drvr = drvr;
820
821
	drvr->iflist[bssidx] = ifp;
	ifp->ifidx = ifidx;
822
	ifp->bssidx = bssidx;
823

824
	init_waitqueue_head(&ifp->pend_8021x_wait);
825
	spin_lock_init(&ifp->netif_stop_lock);
826

827
828
	if (mac_addr != NULL)
		memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
829

830
	brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
831
		  current->pid, name, ifp->mac_addr);
832

833
	return ifp;
834
835
}

836
void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
837
838
839
{
	struct brcmf_if *ifp;

840
	ifp = drvr->iflist[bssidx];
841
	drvr->iflist[bssidx] = NULL;
842
	if (!ifp) {
843
		brcmf_err("Null interface, idx=%d\n", bssidx);
844
845
		return;
	}
846
	brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
847
	if (ifp->ndev) {
848
		if (bssidx == 0) {
849
850
851
852
853
854
855
856
857
			if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
				rtnl_lock();
				brcmf_netdev_stop(ifp->ndev);
				rtnl_unlock();
			}
		} else {
			netif_stop_queue(ifp->ndev);
		}

858
859
860
861
		if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
			cancel_work_sync(&ifp->setmacaddr_work);
			cancel_work_sync(&ifp->multicast_work);
		}
862
		/* unregister will take care of freeing it */
863
		unregister_netdev(ifp->ndev);
864
865
	} else {
		kfree(ifp);
866
867
868
	}
}

869
int brcmf_attach(struct device *dev)
870
{
871
	struct brcmf_pub *drvr = NULL;
872
	int ret = 0;
873
874
875
876

	brcmf_dbg(TRACE, "Enter\n");

	/* Allocate primary brcmf_info */
877
878
	drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
	if (!drvr)
879
		return -ENOMEM;
880

881
	mutex_init(&drvr->proto_block);
882
883

	/* Link to bus module */
884
	drvr->hdrlen = 0;
885
	drvr->bus_if = dev_get_drvdata(dev);
886
	drvr->bus_if->drvr = drvr;
887

888
889
890
	/* create device debugfs folder */
	brcmf_debugfs_attach(drvr);

891
	/* Attach and link in the protocol */
892
893
	ret = brcmf_proto_attach(drvr);
	if (ret != 0) {
894
		brcmf_err("brcmf_prot_attach failed\n");
895
896
897
		goto fail;
	}

898
899
900
	/* attach firmware event handler */
	brcmf_fweh_attach(drvr);

901
	return ret;
902
903

fail:
904
	brcmf_detach(dev);
905

906
	return ret;
907
908
}

909
int brcmf_bus_start(struct device *dev)
910
911
{
	int ret = -1;
912
913
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;
914
	struct brcmf_if *ifp;
915
	struct brcmf_if *p2p_ifp;
916
917
918
919

	brcmf_dbg(TRACE, "\n");

	/* Bring up the bus */
920
	ret = brcmf_bus_init(bus_if);
921
	if (ret != 0) {
922
		brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
923
924
925
		return ret;
	}

926
	/* add primary networking interface */
927
	ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
928
929
930
	if (IS_ERR(ifp))
		return PTR_ERR(ifp);

931
932
933
934
935
936
937
	if (brcmf_p2p_enable)
		p2p_ifp = brcmf_add_if(drvr, 1, 0, "p2p%d", NULL);
	else
		p2p_ifp = NULL;
	if (IS_ERR(p2p_ifp))
		p2p_ifp = NULL;

938
	/* signal bus ready */
939
	brcmf_bus_change_state(bus_if, BRCMF_BUS_DATA);
940
941
942

	/* Bus is ready, do any initialization */
	ret = brcmf_c_preinit_dcmds(ifp);
943
	if (ret < 0)
944
		goto fail;
945

946
947
948
949
	ret = brcmf_fws_init(drvr);
	if (ret < 0)
		goto fail;

950
	brcmf_fws_add_interface(ifp);
951

952
	drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
953
954
955
956
	if (drvr->config == NULL) {
		ret = -ENOMEM;
		goto fail;
	}
957

958
959
960
961
	ret = brcmf_fweh_activate_events(ifp);
	if (ret < 0)
		goto fail;

962
	ret = brcmf_net_attach(ifp, false);
963
fail:
964
	if (ret < 0) {
965
		brcmf_err("failed: %d\n", ret);
966
		brcmf_cfg80211_detach(drvr->config);
967
968
		if (drvr->fws) {
			brcmf_fws_del_interface(ifp);
969
			brcmf_fws_deinit(drvr);
970
		}
971
972
973
974
		if (drvr->iflist[0]) {
			free_netdev(ifp->ndev);
			drvr->iflist[0] = NULL;
		}
975
976
977
978
		if (p2p_ifp) {
			free_netdev(p2p_ifp->ndev);
			drvr->iflist[1] = NULL;
		}
979
		return ret;
980
	}
981
	if ((brcmf_p2p_enable) && (p2p_ifp))
982
983
		if (brcmf_net_p2p_attach(p2p_ifp) < 0)
			brcmf_p2p_enable = 0;
984

985
986
987
	return 0;
}

988
989
990
991
992
993
994
995
996
997
void brcmf_bus_add_txhdrlen(struct device *dev, uint len)
{
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;

	if (drvr) {
		drvr->hdrlen += len;
	}
}

998
999
1000
1001
1002
static void brcmf_bus_detach(struct brcmf_pub *drvr)
{
	brcmf_dbg(TRACE, "Enter\n");

	if (drvr) {
1003
		/* Stop the bus module */
1004
		brcmf_bus_stop(drvr->bus_if);
1005
1006
1007
	}
}

1008
1009
1010
1011
1012
1013
1014
1015
void brcmf_dev_reset(struct device *dev)
{
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;

	if (drvr == NULL)
		return;

1016
1017
	if (drvr->iflist[0])
		brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
1018
1019
}

1020
void brcmf_detach(struct device *dev)
1021
{
1022
	s32 i;
1023
1024
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_pub *drvr = bus_if->drvr;
1025
1026
1027

	brcmf_dbg(TRACE, "Enter\n");

1028
1029
	if (drvr == NULL)
		return;
1030

1031
1032
1033
	/* stop firmware event handling */
	brcmf_fweh_detach(drvr);

1034
1035
	brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);

1036
1037
	/* make sure primary interface removed last */
	for (i = BRCMF_MAX_IFS-1; i > -1; i--)
1038
1039
		if (drvr->iflist[i]) {
			brcmf_fws_del_interface(drvr->iflist[i]);
1040
			brcmf_del_if(drvr, i);
1041
		}
1042

1043
1044
	brcmf_cfg80211_detach(drvr->config);

1045
1046
	brcmf_fws_deinit(drvr);

1047
	brcmf_bus_detach(drvr);
1048

1049
	brcmf_proto_detach(drvr);
1050

1051
	brcmf_debugfs_detach(drvr);
1052
1053
	bus_if->drvr = NULL;
	kfree(drvr);
1054
1055
}

1056
1057
1058
1059
1060
1061
1062
1063
s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len)
{
	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
	struct brcmf_if *ifp = bus_if->drvr->iflist[0];

	return brcmf_fil_iovar_data_set(ifp, name, data, len);
}

1064
static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
1065
{
1066
	return atomic_read(&ifp->pend_8021x_cnt);
1067
1068
1069
1070
}

int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
{
1071
	struct brcmf_if *ifp = netdev_priv(ndev);
1072
1073
	int err;

1074
1075
	err = wait_event_timeout(ifp->pend_8021x_wait,
				 !brcmf_get_pend_8021x_cnt(ifp),
1076
1077
1078
1079
1080
				 msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));

	WARN_ON(!err);

	return !err;
1081
1082
}

1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
/*
 * return chip id and rev of the device encoded in u32.
 */
u32 brcmf_get_chip_info(struct brcmf_if *ifp)
{
	struct brcmf_bus *bus = ifp->drvr->bus_if;

	return bus->chip << 4 | bus->chiprev;
}

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static void brcmf_driver_register(struct work_struct *work)
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{
#ifdef CONFIG_BRCMFMAC_SDIO
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	brcmf_sdio_register();
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#endif
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#ifdef CONFIG_BRCMFMAC_USB
1099
	brcmf_usb_register();
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#endif
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}
1102
static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register);
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static int __init brcmfmac_module_init(void)
{
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	brcmf_debugfs_init();
#ifdef CONFIG_BRCMFMAC_SDIO
	brcmf_sdio_init();
#endif
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	if (!schedule_work(&brcmf_driver_work))
		return -EBUSY;

1113
	return 0;
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}

1116
static void __exit brcmfmac_module_exit(void)
1117
{
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