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brcmfmac: Create p2p0 netdev via module variable. 

Add module variable with which a p2p0 netdev can be created. This
netdev can be used by wpa-supplicant to configure and set up the
p2p client/GO.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Hante Meuleman 2013-02-08 15:53:52 +01:00 committed by John W. Linville
parent 1ce3086ccd
commit 2fde59d93f
4 changed files with 213 additions and 140 deletions
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109
drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
View File

@ -42,6 +42,12 @@ MODULE_LICENSE("Dual BSD/GPL");
int brcmf_msg_level;
module_param(brcmf_msg_level, int, 0);
/* 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)
{
@ -593,16 +599,6 @@ static const struct net_device_ops brcmf_netdev_ops_pri = {
.ndo_set_rx_mode = brcmf_netdev_set_multicast_list
};
static const struct net_device_ops brcmf_netdev_ops_virt = {
.ndo_open = brcmf_cfg80211_up,
.ndo_stop = brcmf_cfg80211_down,
.ndo_get_stats = brcmf_netdev_get_stats,
.ndo_do_ioctl = brcmf_netdev_ioctl_entry,
.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)
{
struct brcmf_pub *drvr = ifp->drvr;
@ -613,10 +609,7 @@ int brcmf_net_attach(struct brcmf_if *ifp)
ndev = ifp->ndev;
/* set appropriate operations */
if (!ifp->bssidx)
ndev->netdev_ops = &brcmf_netdev_ops_pri;
else
ndev->netdev_ops = &brcmf_netdev_ops_virt;
ndev->netdev_ops = &brcmf_netdev_ops_pri;
ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
ndev->ethtool_ops = &brcmf_ethtool_ops;
@ -627,6 +620,9 @@ int brcmf_net_attach(struct brcmf_if *ifp)
/* 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 (register_netdev(ndev) != 0) {
brcmf_err("couldn't register the net device\n");
goto fail;
@ -641,6 +637,69 @@ fail:
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 int brcmf_net_p2p_do_ioctl(struct net_device *ndev,
struct ifreq *ifr, int cmd)
{
brcmf_dbg(TRACE, "Enter\n");
return 0;
}
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_do_ioctl = brcmf_net_p2p_do_ioctl,
.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:
return -EBADE;
}
struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
char *name, u8 *mac_addr)
{
@ -682,8 +741,6 @@ struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
ifp->ifidx = ifidx;
ifp->bssidx = bssidx;
INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address);
INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
init_waitqueue_head(&ifp->pend_8021x_wait);
@ -717,8 +774,10 @@ void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx)
netif_stop_queue(ifp->ndev);
}
cancel_work_sync(&ifp->setmacaddr_work);
cancel_work_sync(&ifp->multicast_work);
if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
cancel_work_sync(&ifp->setmacaddr_work);
cancel_work_sync(&ifp->multicast_work);
}
unregister_netdev(ifp->ndev);
drvr->iflist[bssidx] = NULL;
@ -776,6 +835,7 @@ int brcmf_bus_start(struct device *dev)
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");
@ -791,6 +851,13 @@ int brcmf_bus_start(struct device *dev)
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 */
bus_if->state = BRCMF_BUS_DATA;
@ -817,8 +884,14 @@ fail:
brcmf_cfg80211_detach(drvr->config);
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))
brcmf_net_p2p_attach(p2p_ifp);
return 0;
}

226
drivers/net/wireless/brcm80211/brcmfmac/p2p.c
View File

@ -407,22 +407,21 @@ static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len)
/**
* brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation.
*
* @p2p: P2P specific data.
* @ifp: ifp to use for iovars (primary).
* @p2p_mac: mac address to configure for p2p_da_override
*/
static int brcmf_p2p_set_firmware(struct brcmf_p2p_info *p2p)
static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac)
{
struct net_device *ndev = cfg_to_ndev(p2p->cfg);
u8 null_eth_addr[] = { 0, 0, 0, 0, 0, 0 };
s32 ret = 0;
brcmf_fil_iovar_int_set(netdev_priv(ndev), "apsta", 1);
brcmf_fil_iovar_int_set(ifp, "apsta", 1);
/* In case of COB type, firmware has default mac address
* After Initializing firmware, we have to set current mac address to
* firmware for P2P device address
*/
ret = brcmf_fil_iovar_data_set(netdev_priv(ndev), "p2p_da_override",
null_eth_addr, sizeof(null_eth_addr));
ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac,
ETH_ALEN);
if (ret)
brcmf_err("failed to update device address ret %d\n", ret);
@ -440,11 +439,15 @@ static int brcmf_p2p_set_firmware(struct brcmf_p2p_info *p2p)
*/
static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p)
{
struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
struct brcmf_if *p2p_ifp = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->ifp;
/* Generate the P2P Device Address. This consists of the device's
* primary MAC address with the locally administered bit set.
*/
memcpy(p2p->dev_addr, p2p->cfg->pub->mac, ETH_ALEN);
memcpy(p2p->dev_addr, pri_ifp->mac_addr, ETH_ALEN);
p2p->dev_addr[0] |= 0x02;
memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN);
/* Generate the P2P Interface Address. If the discovery and connection
* BSSCFGs need to simultaneously co-exist, then this address must be
@ -502,112 +505,26 @@ static s32 brcmf_p2p_set_discover_state(struct brcmf_if *ifp, u8 state,
return ret;
}
/**
* brcmf_p2p_init_discovery() - enable discovery in the firmware.
*
* @p2p: P2P specific data.
*
* Configures the firmware to allow P2P peer discovery. Creates the
* virtual interface and consequently the P2P device for it.
*/
static s32 brcmf_p2p_init_discovery(struct brcmf_p2p_info *p2p)
{
struct net_device *ndev = cfg_to_ndev(p2p->cfg);
struct brcmf_cfg80211_vif *vif;
struct brcmf_if *ifp;
struct p2p_bss *bss_dev;
s32 index;
s32 ret;
brcmf_dbg(TRACE, "enter\n");
bss_dev = &p2p->bss_idx[P2PAPI_BSSCFG_DEVICE];
if (bss_dev->vif != NULL) {
brcmf_dbg(INFO, "do nothing, already initialized\n");
return 0;
}
/* Enable P2P Discovery in the firmware */
ret = brcmf_fil_iovar_int_set(netdev_priv(ndev), "p2p_disc", 1);
if (ret < 0) {
brcmf_err("set discover error\n");
return ret;
}
/* obtain bsscfg index for P2P discovery */
ret = brcmf_fil_iovar_int_get(netdev_priv(ndev), "p2p_dev", &index);
if (ret < 0) {
brcmf_err("retrieving discover bsscfg index failed\n");
return ret;
}
/*
* need brcmf_if for setting the discovery state.
*/
ifp = kzalloc(sizeof(*vif->ifp), GFP_KERNEL);
if (!ifp) {
brcmf_err("could not create discovery if\n");
return -ENOMEM;
}
/* set required fields */
ifp->drvr = p2p->cfg->pub;
ifp->ifidx = 0;
ifp->bssidx = index;
/* Set the initial discovery state to SCAN */
ret = brcmf_p2p_set_discover_state(ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
if (ret != 0) {
brcmf_err("unable to set WL_P2P_DISC_ST_SCAN\n");
(void)brcmf_fil_iovar_int_set(netdev_priv(ndev), "p2p_disc", 0);
kfree(ifp);
return ret;
}
/* create a vif for it */
vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE, false);
if (IS_ERR(vif)) {
brcmf_err("could not create discovery vif\n");
kfree(ifp);
return PTR_ERR(vif);
}
vif->ifp = ifp;
ifp->vif = vif;
bss_dev->vif = vif;
return 0;
}
/**
* brcmf_p2p_deinit_discovery() - disable P2P device discovery.
*
* @p2p: P2P specific data.
*
* Resets the discovery state and disables it in firmware. The virtual
* interface and P2P device are freed.
* Resets the discovery state and disables it in firmware.
*/
static s32 brcmf_p2p_deinit_discovery(struct brcmf_p2p_info *p2p)
{
struct net_device *ndev = cfg_to_ndev(p2p->cfg);
struct brcmf_if *ifp;
struct p2p_bss *bss_dev;
struct brcmf_cfg80211_vif *vif;
brcmf_dbg(TRACE, "enter\n");
bss_dev = &p2p->bss_idx[P2PAPI_BSSCFG_DEVICE];
ifp = bss_dev->vif->ifp;
/* Set the discovery state to SCAN */
(void)brcmf_p2p_set_discover_state(ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
(void)brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
/* Disable P2P discovery in the firmware */
(void)brcmf_fil_iovar_int_set(netdev_priv(ndev), "p2p_disc", 0);
/* remove discovery interface */
brcmf_free_vif(bss_dev->vif);
bss_dev->vif = NULL;
kfree(ifp);
vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
(void)brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 0);
return 0;
}
@ -626,18 +543,30 @@ static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info *p2p)
brcmf_dbg(TRACE, "enter\n");
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
if (vif) {
brcmf_dbg(INFO, "DISCOVERY init already done\n");
if (!vif) {
brcmf_err("P2P config device not available\n");
ret = -EPERM;
goto exit;
}
ret = brcmf_p2p_init_discovery(p2p);
if (test_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status)) {
brcmf_dbg(INFO, "P2P config device already configured\n");
goto exit;
}
/* Re-initialize P2P Discovery in the firmware */
vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;
ret = brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 1);
if (ret < 0) {
brcmf_err("init discovery error %d\n", ret);
brcmf_err("set p2p_disc error\n");
goto exit;
}
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
ret = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0);
if (ret < 0) {
brcmf_err("unable to set WL_P2P_DISC_ST_SCAN\n");
goto exit;
}
/*
* Set wsec to any non-zero value in the discovery bsscfg
@ -646,9 +575,12 @@ static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info *p2p)
* initiate WPS with us if this bit is not set.
*/
ret = brcmf_fil_bsscfg_int_set(vif->ifp, "wsec", AES_ENABLED);
if (ret < 0)
if (ret < 0) {
brcmf_err("wsec error %d\n", ret);
goto exit;
}
set_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status);
exit:
return ret;
}
@ -1356,20 +1288,75 @@ exit:
*
* @cfg: driver private data for cfg80211 interface.
*/
void brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg,
struct brcmf_cfg80211_vif *vif)
s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg)
{
struct brcmf_if *pri_ifp;
struct brcmf_if *p2p_ifp;
struct brcmf_cfg80211_vif *p2p_vif;
struct brcmf_p2p_info *p2p;
struct brcmf_pub *drvr;
s32 bssidx;
s32 err = 0;
p2p = &cfg->p2p;
p2p->cfg = cfg;
p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif = vif;
brcmf_p2p_generate_bss_mac(p2p);
brcmf_p2p_set_firmware(p2p);
init_completion(&p2p->send_af_done);
drvr = cfg->pub;
pri_ifp = drvr->iflist[0];
p2p_ifp = drvr->iflist[1];
p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif = pri_ifp->vif;
if (p2p_ifp) {
p2p_vif = brcmf_alloc_vif(cfg, NL80211_IFTYPE_STATION,
false);
if (IS_ERR(p2p_vif)) {
brcmf_err("could not create discovery vif\n");
err = -ENOMEM;
goto exit;
}
p2p_vif->ifp = p2p_ifp;
p2p_ifp->vif = p2p_vif;
p2p_vif->wdev.netdev = p2p_ifp->ndev;
p2p_ifp->ndev->ieee80211_ptr = &p2p_vif->wdev;
SET_NETDEV_DEV(p2p_ifp->ndev, wiphy_dev(cfg->wiphy));
p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif;
brcmf_p2p_generate_bss_mac(p2p);
brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr);
/* Initialize P2P Discovery in the firmware */
err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1);
if (err < 0) {
brcmf_err("set p2p_disc error\n");
brcmf_free_vif(p2p_vif);
goto exit;
}
/* obtain bsscfg index for P2P discovery */
err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bssidx);
if (err < 0) {
brcmf_err("retrieving discover bsscfg index failed\n");
brcmf_free_vif(p2p_vif);
goto exit;
}
/* Verify that firmware uses same bssidx as driver !! */
if (p2p_ifp->bssidx != bssidx) {
brcmf_err("Incorrect bssidx=%d, compared to p2p_ifp->bssidx=%d\n",
bssidx, p2p_ifp->bssidx);
brcmf_free_vif(p2p_vif);
goto exit;
}
init_completion(&p2p->send_af_done);
}
exit:
return err;
}
/**
* brcmf_p2p_detach() - detach P2P.
*
@ -1377,10 +1364,15 @@ void brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg,
*/
void brcmf_p2p_detach(struct brcmf_p2p_info *p2p)
{
if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif != NULL) {
brcmf_p2p_cancel_remain_on_channel(
p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->ifp);
struct brcmf_cfg80211_vif *vif;
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif;
if (vif != NULL) {
brcmf_p2p_cancel_remain_on_channel(vif->ifp);
brcmf_p2p_deinit_discovery(p2p);
/* remove discovery interface */
brcmf_free_vif(vif);
p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL;
}
/* just set it all to zero */
memset(p2p, 0, sizeof(*p2p));

6
drivers/net/wireless/brcm80211/brcmfmac/p2p.h
View File

@ -66,7 +66,8 @@ struct p2p_bss {
* @BRCMF_P2P_STATUS_DISCOVER_LISTEN: P2P listen, remaining on channel.
*/
enum brcmf_p2p_status {
BRCMF_P2P_STATUS_IF_ADD = 0,
BRCMF_P2P_STATUS_ENABLED,
BRCMF_P2P_STATUS_IF_ADD,
BRCMF_P2P_STATUS_IF_DEL,
BRCMF_P2P_STATUS_IF_DELETING,
BRCMF_P2P_STATUS_IF_CHANGING,
@ -108,8 +109,7 @@ struct brcmf_p2p_info {
struct completion send_af_done;
};
void brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg,
struct brcmf_cfg80211_vif *vif);
s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg);
void brcmf_p2p_detach(struct brcmf_p2p_info *p2p);
struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name,
enum nl80211_iftype type, u32 *flags,

12
drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
View File

@ -4857,11 +4857,19 @@ struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr,
brcmf_err("Failed to init iwm_priv (%d)\n", err);
goto cfg80211_attach_out;
}
brcmf_p2p_attach(cfg, vif);
ifp->vif = vif;
err = brcmf_p2p_attach(cfg);
if (err) {
brcmf_err("P2P initilisation failed (%d)\n", err);
goto cfg80211_p2p_attach_out;
}
return cfg;
cfg80211_p2p_attach_out:
wl_deinit_priv(cfg);
cfg80211_attach_out:
brcmf_free_vif(vif);
wiphy_free(wiphy);