/*
* 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>
#include <linux/module.h>
#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"
#include "fwil_types.h"
#include "p2p.h"
#include "wl_cfg80211.h"
#include "fwil.h"
#include "fwsignal.h"
#include "proto.h"
MODULE_AUTHOR("Broadcom Corporation");
MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
MODULE_LICENSE("Dual BSD/GPL");
#define MAX_WAIT_FOR_8021X_TX 50 /* msecs */
/* 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
/* Error bits */
int brcmf_msg_level;
module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR);
MODULE_PARM_DESC(debug, "level of debug output");
/* 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
char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
{
if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
brcmf_err("ifidx %d out of range\n", ifidx);
return "<if_bad>";
}
if (drvr->iflist[ifidx] == NULL) {
brcmf_err("null i/f %d\n", ifidx);
return "<if_null>";
}
if (drvr->iflist[ifidx]->ndev)
return drvr->iflist[ifidx]->ndev->name;
return "<if_none>";
}
static void _brcmf_set_multicast_list(struct work_struct *work)
{
struct brcmf_if *ifp;
struct net_device *ndev;
struct netdev_hw_addr *ha;
u32 cmd_value, cnt;
__le32 cnt_le;
char *buf, *bufp;
u32 buflen;
s32 err;
ifp = container_of(work, struct brcmf_if, multicast_work);
brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
ndev = ifp->ndev;
/* Determine initial value of allmulti flag */
cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
/* Send down the multicast list first. */
cnt = netdev_mc_count(ndev);
buflen = sizeof(cnt) + (cnt * ETH_ALEN);
buf = kmalloc(buflen, GFP_ATOMIC);
if (!buf)
return;
bufp = buf;
cnt_le = cpu_to_le32(cnt);
memcpy(bufp, &cnt_le, sizeof(cnt_le));
bufp += sizeof(cnt_le);
netdev_for_each_mc_addr(ha, ndev) {
if (!cnt)
break;
memcpy(bufp, ha->addr, ETH_ALEN);
bufp += ETH_ALEN;
cnt--;
}
err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen);
if (err < 0) {
brcmf_err("Setting mcast_list failed, %d\n", err);
cmd_value = cnt ? true : cmd_value;
}
kfree(buf);
/*
* Now send the allmulti setting. This is based on the setting in the
* net_device flags, but might be modified above to be turned on if we
* were trying to set some addresses and dongle rejected it...
*/
err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value);
if (err < 0)
brcmf_err("Setting allmulti failed, %d\n", err);
/*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)
brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
err);
}
static void
_brcmf_set_mac_address(struct work_struct *work)
{
struct brcmf_if *ifp;
s32 err;
ifp = container_of(work, struct brcmf_if, setmacaddr_work);
brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
ETH_ALEN);
if (err < 0) {
brcmf_err("Setting cur_etheraddr failed, %d\n", err);
} else {
brcmf_dbg(TRACE, "MAC address updated to %pM\n",
ifp->mac_addr);
memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
}
}
static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct sockaddr *sa = (struct sockaddr *)addr;
memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN);
schedule_work(&ifp->setmacaddr_work);
return 0;
}
static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
schedule_work(&ifp->multicast_work);
}
static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
struct net_device *ndev)
{
int ret;
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
struct ethhdr *eh;
brcmf_dbg(DATA, "Enter, idx=%d\n", ifp->bssidx);
/* Can the device send data? */
if (drvr->bus_if->state != BRCMF_BUS_DATA) {
brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state);
netif_stop_queue(ndev);
dev_kfree_skb(skb);
ret = -ENODEV;
goto done;
}
if (!drvr->iflist[ifp->bssidx]) {
brcmf_err("bad ifidx %d\n", ifp->bssidx);
netif_stop_queue(ndev);
dev_kfree_skb(skb);
ret = -ENODEV;
goto done;
}
/* Make sure there's enough room for any header */
if (skb_headroom(skb) < drvr->hdrlen) {
struct sk_buff *skb2;
brcmf_dbg(INFO, "%s: insufficient headroom\n",
brcmf_ifname(drvr, ifp->bssidx));
drvr->bus_if->tx_realloc++;
skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
dev_kfree_skb(skb);
skb = skb2;
if (skb == NULL) {
brcmf_err("%s: skb_realloc_headroom failed\n",
brcmf_ifname(drvr, ifp->bssidx));
ret = -ENOMEM;
goto done;
}
}
/* validate length for ether packet */
if (skb->len < sizeof(*eh)) {
ret = -EINVAL;
dev_kfree_skb(skb);
goto done;
}
ret = brcmf_fws_process_skb(ifp, skb);
done:
if (ret) {
ifp->stats.tx_dropped++;
} else {
ifp->stats.tx_packets++;
ifp->stats.tx_bytes += skb->len;
}
/* Return ok: we always eat the packet */
return NETDEV_TX_OK;
}
void brcmf_txflowblock_if(struct brcmf_if *ifp,
enum brcmf_netif_stop_reason reason, bool state)
{
unsigned long flags;
if (!ifp || !ifp->ndev)
return;
brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
ifp->bssidx, ifp->netif_stop, reason, state);
spin_lock_irqsave(&ifp->netif_stop_lock, flags);
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);
}
spin_unlock_irqrestore(&ifp->netif_stop_lock, flags);
}
void brcmf_txflowblock(struct device *dev, bool state)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_dbg(TRACE, "Enter\n");
brcmf_fws_bus_blocked(drvr, state);
}
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);
}
}
void brcmf_rx_frame(struct device *dev, struct sk_buff *skb)
{
struct brcmf_if *ifp;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
struct brcmf_skb_reorder_data *rd;
u8 ifidx;
int ret;
brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
/* process and remove protocol-specific header */
ret = brcmf_proto_hdrpull(drvr, true, &ifidx, skb);
ifp = drvr->iflist[ifidx];
if (ret || !ifp || !ifp->ndev) {
if ((ret != -ENODATA) && ifp)
ifp->stats.rx_errors++;
brcmu_pkt_buf_free_skb(skb);
return;
}
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);
}
void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp,
bool success)
{
struct brcmf_if *ifp;
struct ethhdr *eh;
u8 ifidx;
u16 type;
int res;
res = brcmf_proto_hdrpull(drvr, false, &ifidx, txp);
ifp = drvr->iflist[ifidx];
if (!ifp)
goto done;
if (res == 0) {
eh = (struct ethhdr *)(txp->data);
type = ntohs(eh->h_proto);
if (type == ETH_P_PAE) {
atomic_dec(&ifp->pend_8021x_cnt);
if (waitqueue_active(&ifp->pend_8021x_wait))
wake_up(&ifp->pend_8021x_wait);
}
}
if (!success)
ifp->stats.tx_errors++;
done:
brcmu_pkt_buf_free_skb(txp);
}
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;
/* 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);
}
}
static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
return &ifp->stats;
}
static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
struct ethtool_drvinfo *info)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
snprintf(info->version, sizeof(info->version), "n/a");
strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version));
strlcpy(info->bus_info, dev_name(drvr->bus_if->dev),
sizeof(info->bus_info));
}
static const struct ethtool_ops brcmf_ethtool_ops = {
.get_drvinfo = brcmf_ethtool_get_drvinfo,
};
static int brcmf_netdev_stop(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
brcmf_cfg80211_down(ndev);
/* Set state and stop OS transmissions */
netif_stop_queue(ndev);
return 0;
}
static int brcmf_netdev_open(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
struct brcmf_bus *bus_if = drvr->bus_if;
u32 toe_ol;
brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx);
/* If bus is not ready, can't continue */
if (bus_if->state != BRCMF_BUS_DATA) {
brcmf_err("failed bus is not ready\n");
return -EAGAIN;
}
atomic_set(&ifp->pend_8021x_cnt, 0);
/* 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)
ndev->features |= NETIF_F_IP_CSUM;
else
ndev->features &= ~NETIF_F_IP_CSUM;
if (brcmf_cfg80211_up(ndev)) {
brcmf_err("failed to bring up cfg80211\n");
return -EIO;
}
/* Allow transmit calls */
netif_start_queue(ndev);
return 0;
}
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
};
int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
{
struct brcmf_pub *drvr = ifp->drvr;
struct net_device *ndev;
s32 err;
brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx,
ifp->mac_addr);
ndev = ifp->ndev;
/* set appropriate operations */
ndev->netdev_ops = &brcmf_netdev_ops_pri;
ndev->hard_header_len += drvr->hdrlen;
ndev->ethtool_ops = &brcmf_ethtool_ops;
drvr->rxsz = ndev->mtu + ndev->hard_header_len +
drvr->hdrlen;
/* set the mac address */
memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN);
INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
if (rtnl_locked)
err = register_netdevice(ndev);
else
err = register_netdev(ndev);
if (err != 0) {
brcmf_err("couldn't register the net device\n");
goto fail;
}
brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
ndev->destructor = brcmf_cfg80211_free_netdev;
return 0;
fail:
drvr->iflist[ifp->bssidx] = NULL;
ndev->netdev_ops = NULL;
free_netdev(ndev);
return -EBADE;
}
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:
ifp->drvr->iflist[ifp->bssidx] = NULL;
ndev->netdev_ops = NULL;
free_netdev(ndev);
return -EBADE;
}
struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
char *name, u8 *mac_addr)
{
struct brcmf_if *ifp;
struct net_device *ndev;
brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx);
ifp = drvr->iflist[bssidx];
/*
* Delete the existing interface before overwriting it
* in case we missed the BRCMF_E_IF_DEL event.
*/
if (ifp) {
brcmf_err("ERROR: netdev:%s already exists\n",
ifp->ndev->name);
if (ifidx) {
netif_stop_queue(ifp->ndev);
unregister_netdev(ifp->ndev);
free_netdev(ifp->ndev);
drvr->iflist[bssidx] = NULL;
} else {
brcmf_err("ignore IF event\n");
return ERR_PTR(-EINVAL);
}
}
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);
if (!ifp)
return ERR_PTR(-ENOMEM);
} else {
brcmf_dbg(INFO, "allocate netdev interface\n");
/* Allocate netdev, including space for private structure */
ndev = alloc_netdev(sizeof(*ifp), name, ether_setup);
if (!ndev)
return ERR_PTR(-ENOMEM);
ifp = netdev_priv(ndev);
ifp->ndev = ndev;
}
ifp->drvr = drvr;
drvr->iflist[bssidx] = ifp;
ifp->ifidx = ifidx;
ifp->bssidx = bssidx;
init_waitqueue_head(&ifp->pend_8021x_wait);
spin_lock_init(&ifp->netif_stop_lock);
if (mac_addr != NULL)
memcpy(ifp->mac_addr, mac_addr, ETH_ALEN);
brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n",
current->pid, name, ifp->mac_addr);
return ifp;
}
void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
{
struct brcmf_if *ifp;
ifp = drvr->iflist[bssidx];
drvr->iflist[bssidx] = NULL;
if (!ifp) {
brcmf_err("Null interface, idx=%d\n", bssidx);
return;
}
brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx);
if (ifp->ndev) {
if (bssidx == 0) {
if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
rtnl_lock();
brcmf_netdev_stop(ifp->ndev);
rtnl_unlock();
}
} else {
netif_stop_queue(ifp->ndev);
}
if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
cancel_work_sync(&ifp->setmacaddr_work);
cancel_work_sync(&ifp->multicast_work);
}
/* unregister will take care of freeing it */
unregister_netdev(ifp->ndev);
} else {
kfree(ifp);
}
}
int brcmf_attach(struct device *dev)
{
struct brcmf_pub *drvr = NULL;
int ret = 0;
brcmf_dbg(TRACE, "Enter\n");
/* Allocate primary brcmf_info */
drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
if (!drvr)
return -ENOMEM;
mutex_init(&drvr->proto_block);
/* Link to bus module */
drvr->hdrlen = 0;
drvr->bus_if = dev_get_drvdata(dev);
drvr->bus_if->drvr = drvr;
/* create device debugfs folder */
brcmf_debugfs_attach(drvr);
/* Attach and link in the protocol */
ret = brcmf_proto_attach(drvr);
if (ret != 0) {
brcmf_err("brcmf_prot_attach failed\n");
goto fail;
}
/* attach firmware event handler */
brcmf_fweh_attach(drvr);
return ret;
fail:
brcmf_detach(dev);
return ret;
}
int brcmf_bus_start(struct device *dev)
{
int ret = -1;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
struct brcmf_if *ifp;
struct brcmf_if *p2p_ifp;
brcmf_dbg(TRACE, "\n");
/* Bring up the bus */
ret = brcmf_bus_init(bus_if);
if (ret != 0) {
brcmf_err("brcmf_sdbrcm_bus_init failed %d\n", ret);
return ret;
}
/* add primary networking interface */
ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL);
if (IS_ERR(ifp))
return PTR_ERR(ifp);
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;
/* signal bus ready */
brcmf_bus_change_state(bus_if, BRCMF_BUS_DATA);
/* Bus is ready, do any initialization */
ret = brcmf_c_preinit_dcmds(ifp);
if (ret < 0)
goto fail;
ret = brcmf_fws_init(drvr);
if (ret < 0)
goto fail;
brcmf_fws_add_interface(ifp);
drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
if (drvr->config == NULL) {
ret = -ENOMEM;
goto fail;
}
ret = brcmf_fweh_activate_events(ifp);
if (ret < 0)
goto fail;
ret = brcmf_net_attach(ifp, false);
fail:
if (ret < 0) {
brcmf_err("failed: %d\n", ret);
brcmf_cfg80211_detach(drvr->config);
if (drvr->fws) {
brcmf_fws_del_interface(ifp);
brcmf_fws_deinit(drvr);
}
if (drvr->iflist[0]) {
free_netdev(ifp->ndev);
drvr->iflist[0] = NULL;
}
if (p2p_ifp) {
free_netdev(p2p_ifp->ndev);
drvr->iflist[1] = NULL;
}
return ret;
}
if ((brcmf_p2p_enable) && (p2p_ifp))
if (brcmf_net_p2p_attach(p2p_ifp) < 0)
brcmf_p2p_enable = 0;
return 0;
}
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;
}
}
static void brcmf_bus_detach(struct brcmf_pub *drvr)
{
brcmf_dbg(TRACE, "Enter\n");
if (drvr) {
/* Stop the bus module */
brcmf_bus_stop(drvr->bus_if);
}
}
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;
if (drvr->iflist[0])
brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1);
}
void brcmf_detach(struct device *dev)
{
s32 i;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_dbg(TRACE, "Enter\n");
if (drvr == NULL)
return;
/* stop firmware event handling */
brcmf_fweh_detach(drvr);
brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN);
/* make sure primary interface removed last */
for (i = BRCMF_MAX_IFS-1; i > -1; i--)
if (drvr->iflist[i]) {
brcmf_fws_del_interface(drvr->iflist[i]);
brcmf_del_if(drvr, i);
}
brcmf_cfg80211_detach(drvr->config);
brcmf_fws_deinit(drvr);
brcmf_bus_detach(drvr);
brcmf_proto_detach(drvr);
brcmf_debugfs_detach(drvr);
bus_if->drvr = NULL;
kfree(drvr);
}
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);
}
static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp)
{
return atomic_read(&ifp->pend_8021x_cnt);
}
int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
int err;
err = wait_event_timeout(ifp->pend_8021x_wait,
!brcmf_get_pend_8021x_cnt(ifp),
msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX));
WARN_ON(!err);
return !err;
}
/*
* 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;
}
static void brcmf_driver_register(struct work_struct *work)
{
#ifdef CONFIG_BRCMFMAC_SDIO
brcmf_sdio_register();
#endif
#ifdef CONFIG_BRCMFMAC_USB
brcmf_usb_register();
#endif
}
static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register);
static int __init brcmfmac_module_init(void)
{
brcmf_debugfs_init();
#ifdef CONFIG_BRCMFMAC_SDIO
brcmf_sdio_init();
#endif
if (!schedule_work(&brcmf_driver_work))
return -EBUSY;
return 0;
}
static void __exit brcmfmac_module_exit(void)
{
cancel_work_sync(&brcmf_driver_work);
#ifdef CONFIG_BRCMFMAC_SDIO
brcmf_sdio_exit();
#endif
#ifdef CONFIG_BRCMFMAC_USB
brcmf_usb_exit();
#endif
brcmf_debugfs_exit();
}
module_init(brcmfmac_module_init);
module_exit(brcmfmac_module_exit);