dhd_linux.c 26.6 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;
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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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	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;
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	brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
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525
	/* process and remove protocol-specific header */
	ret = brcmf_proto_hdrpull(drvr, true, &ifidx, skb);
	ifp = drvr->iflist[ifidx];
526

527
528
529
530
531
	if (ret || !ifp || !ifp->ndev) {
		if ((ret != -ENODATA) && ifp)
			ifp->stats.rx_errors++;
		brcmu_pkt_buf_free_skb(skb);
		return;
532
	}
533
534
535
536
537
538

	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);
539
540
}

541
542
void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp,
		      bool success)
543
{
544
	struct brcmf_if *ifp;
545
	struct ethhdr *eh;
546
	u8 ifidx;
547
	u16 type;
548
	int res;
549

550
	res = brcmf_proto_hdrpull(drvr, false, &ifidx, txp);
551

552
553
	ifp = drvr->iflist[ifidx];
	if (!ifp)
554
		goto done;
555

556
557
558
	if (res == 0) {
		eh = (struct ethhdr *)(txp->data);
		type = ntohs(eh->h_proto);
559

560
561
562
563
564
		if (type == ETH_P_PAE) {
			atomic_dec(&ifp->pend_8021x_cnt);
			if (waitqueue_active(&ifp->pend_8021x_wait))
				wake_up(&ifp->pend_8021x_wait);
		}
565
	}
566
567
	if (!success)
		ifp->stats.tx_errors++;
568
569
done:
	brcmu_pkt_buf_free_skb(txp);
570
}
571

572
573
574
575
576
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;

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

static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
{
588
	struct brcmf_if *ifp = netdev_priv(ndev);
589

590
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
591
592
593
594
595
596
597

	return &ifp->stats;
}

static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
				    struct ethtool_drvinfo *info)
{
598
	struct brcmf_if *ifp = netdev_priv(ndev);
599
	struct brcmf_pub *drvr = ifp->drvr;
600

601
602
603
604
605
	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
	snprintf(info->version, sizeof(info->version), "%lu",
		 drvr->drv_version);
	strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
		sizeof(info->bus_info));
606
607
}

608
609
static const struct ethtool_ops brcmf_ethtool_ops = {
	.get_drvinfo = brcmf_ethtool_get_drvinfo,
610
611
612
613
};

static int brcmf_netdev_stop(struct net_device *ndev)
{
614
	struct brcmf_if *ifp = netdev_priv(ndev);
615

616
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
617

618
	brcmf_cfg80211_down(ndev);
619

620
621
622
623
624
625
626
627
	/* Set state and stop OS transmissions */
	netif_stop_queue(ndev);

	return 0;
}

static int brcmf_netdev_open(struct net_device *ndev)
{
628
	struct brcmf_if *ifp = netdev_priv(ndev);
629
	struct brcmf_pub *drvr = ifp->drvr;
630
	struct brcmf_bus *bus_if = drvr->bus_if;
631
632
	u32 toe_ol;

633
	brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
634

635
636
	/* If bus is not ready, can't continue */
	if (bus_if->state != BRCMF_BUS_DATA) {
637
		brcmf_err("failed bus is not ready\n");
638
639
		return -EAGAIN;
	}
640

641
	atomic_set(&ifp->pend_8021x_cnt, 0);
642

643
644
645
	/* 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)
646
		ndev->features |= NETIF_F_IP_CSUM;
647
	else
648
		ndev->features &= ~NETIF_F_IP_CSUM;
649

650
	if (brcmf_cfg80211_up(ndev)) {
651
		brcmf_err("failed to bring up cfg80211\n");
652
		return -EIO;
653
654
	}

655
656
657
	/* Allow transmit calls */
	netif_start_queue(ndev);
	return 0;
658
659
}

660
661
662
663
664
665
666
667
668
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
};

669
int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
670
{
671
	struct brcmf_pub *drvr = ifp->drvr;
672
	struct net_device *ndev;
673
	s32 err;
674

675
	brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
676
		  ifp->mac_addr);
677
	ndev = ifp->ndev;
678

679
	/* set appropriate operations */
680
	ndev->netdev_ops = &brcmf_netdev_ops_pri;
681

682
	ndev->hard_header_len += drvr->hdrlen;
683
684
685
686
687
	ndev->ethtool_ops = &brcmf_ethtool_ops;

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

688
689
	/* set the mac address */
	memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
690

691
692
693
	INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
	INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);

694
695
696
697
698
	if (rtnl_locked)
		err = register_netdevice(ndev);
	else
		err = register_netdev(ndev);
	if (err != 0) {
699
		brcmf_err("couldn't register the net device\n");
700
701
702
703
704
		goto fail;
	}

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

705
	ndev->destructor = free_netdev;
706
707
708
	return 0;

fail:
709
	drvr->iflist[ifp->bssidx] = NULL;
710
	ndev->netdev_ops = NULL;
711
	free_netdev(ndev);
712
713
714
	return -EBADE;
}

715
716
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
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:
767
768
769
	ifp->drvr->iflist[ifp->bssidx] = NULL;
	ndev->netdev_ops = NULL;
	free_netdev(ndev);
770
771
772
	return -EBADE;
}

773
774
struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
			      char *name, u8 *mac_addr)
775
776
{
	struct brcmf_if *ifp;
777
	struct net_device *ndev;
778

779
	brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
780

781
	ifp = drvr->iflist[bssidx];
782
783
784
785
786
	/*
	 * Delete the existing interface before overwriting it
	 * in case we missed the BRCMF_E_IF_DEL event.
	 */
	if (ifp) {
787
		brcmf_err("ERROR: netdev:%s already exists\n",
788
			  ifp->ndev->name);
789
790
791
792
		if (ifidx) {
			netif_stop_queue(ifp->ndev);
			unregister_netdev(ifp->ndev);
			free_netdev(ifp->ndev);
793
			drvr->iflist[bssidx] = NULL;
794
		} else {
795
			brcmf_err("ignore IF event\n");
796
797
			return ERR_PTR(-EINVAL);
		}
798
	}
799

800
801
802
803
	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);
804
805
		if (!ifp)
			return ERR_PTR(-ENOMEM);
806
807
808
809
	} else {
		brcmf_dbg(INFO, "allocate netdev interface\n");
		/* Allocate netdev, including space for private structure */
		ndev = alloc_netdev(sizeof(*ifp), name, ether_setup);
810
		if (!ndev)
811
812
813
814
			return ERR_PTR(-ENOMEM);

		ifp = netdev_priv(ndev);
		ifp->ndev = ndev;
815
	}
816

817
	ifp->drvr = drvr;
818
819
	drvr->iflist[bssidx] = ifp;
	ifp->ifidx = ifidx;
820
	ifp->bssidx = bssidx;
821

822
	init_waitqueue_head(&ifp->pend_8021x_wait);
823
	spin_lock_init(&ifp->netif_stop_lock);
824

825
826
	if (mac_addr != NULL)
		memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
827

828
	brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
829
		  current->pid, name, ifp->mac_addr);
830

831
	return ifp;
832
833
}

834
void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
835
836
837
{
	struct brcmf_if *ifp;

838
	ifp = drvr->iflist[bssidx];
839
	drvr->iflist[bssidx] = NULL;
840
	if (!ifp) {
841
		brcmf_err("Null interface, idx=%d\n", bssidx);
842
843
		return;
	}
844
	brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
845
	if (ifp->ndev) {
846
		if (bssidx == 0) {
847
848
849
850
851
852
853
854
855
			if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
				rtnl_lock();
				brcmf_netdev_stop(ifp->ndev);
				rtnl_unlock();
			}
		} else {
			netif_stop_queue(ifp->ndev);
		}

856
857
858
859
		if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
			cancel_work_sync(&ifp->setmacaddr_work);
			cancel_work_sync(&ifp->multicast_work);
		}
860
		/* unregister will take care of freeing it */
861
		unregister_netdev(ifp->ndev);
862
		if (bssidx == 0)
863
			brcmf_cfg80211_detach(drvr->config);
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
939
940
941
942
	/* signal bus ready */
	bus_if->state = BRCMF_BUS_DATA;

	/* 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
967
		if (drvr->config)
			brcmf_cfg80211_detach(drvr->config);
968
969
		if (drvr->fws) {
			brcmf_fws_del_interface(ifp);
970
			brcmf_fws_deinit(drvr);
971
		}
972
973
974
975
		if (drvr->iflist[0]) {
			free_netdev(ifp->ndev);
			drvr->iflist[0] = NULL;
		}
976
977
978
979
		if (p2p_ifp) {
			free_netdev(p2p_ifp->ndev);
			drvr->iflist[1] = NULL;
		}
980
		return ret;
981
	}
982
	if ((brcmf_p2p_enable) && (p2p_ifp))
983
984
		if (brcmf_net_p2p_attach(p2p_ifp) < 0)
			brcmf_p2p_enable = 0;
985

986
987
988
	return 0;
}

989
990
991
992
993
994
995
996
997
998
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;
	}
}

999
1000
static void brcmf_bus_detach(struct brcmf_pub *drvr)
{