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brcmfmac: support creation of P2P_DEVICE through user-space

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The current driver code creates a P2P_DEVICE through a module
parameter. This device has a dummy netdevice which is not how this
interface type is intended. This patch add proper support for the
P2P_DEVICE interface type. This requires a wpa_supplicant with such
support as well.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Piotr Haber <phaber@broadcom.com>
Reviewed-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:
Arend van Spriel 2013-04-05 10:57:50 +02:00 committed by John W. Linville
parent a0f472aca2
commit 27f10e380a
2 changed files with 143 additions and 11 deletions
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148
drivers/net/wireless/brcm80211/brcmfmac/p2p.c
View file

@ -15,6 +15,7 @@
*/
#include <linux/slab.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <net/cfg80211.h>
#include <brcmu_wifi.h>
@ -455,7 +456,9 @@ static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac)
{
s32 ret = 0;
brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1);
brcmf_fil_iovar_int_set(ifp, "apsta", 1);
brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1);
/* In case of COB type, firmware has default mac address
* After Initializing firmware, we have to set current mac address to
@ -473,21 +476,29 @@ static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac)
* brcmf_p2p_generate_bss_mac() - derive mac addresses for P2P.
*
* @p2p: P2P specific data.
* @dev_addr: optional device address.
*
* P2P needs mac addresses for P2P device and interface. These are
* derived from the primary net device, ie. the permanent ethernet
* address of the device.
* P2P needs mac addresses for P2P device and interface. If no device
* address it specified, these are derived from the primary net device, ie.
* the permanent ethernet address of the device.
*/
static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p)
static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr)
{
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;
bool local_admin = false;
if (!dev_addr || is_zero_ether_addr(dev_addr)) {
dev_addr = pri_ifp->mac_addr;
local_admin = true;
}
/* Generate the P2P Device Address. This consists of the device's
* primary MAC address with the locally administered bit set.
*/
memcpy(p2p->dev_addr, pri_ifp->mac_addr, ETH_ALEN);
p2p->dev_addr[0] |= 0x02;
memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);
if (local_admin)
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
@ -495,6 +506,7 @@ static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p)
* different from the P2P Device Address, but also locally administered.
*/
memcpy(p2p->int_addr, p2p->dev_addr, ETH_ALEN);
p2p->int_addr[0] |= 0x02;
p2p->int_addr[4] ^= 0x80;
}
@ -1935,7 +1947,7 @@ s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg)
p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif;
brcmf_p2p_generate_bss_mac(p2p);
brcmf_p2p_generate_bss_mac(p2p, NULL);
brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr);
/* Initialize P2P Discovery in the firmware */
@ -2124,14 +2136,97 @@ static int brcmf_p2p_release_p2p_if(struct brcmf_cfg80211_vif *vif)
return brcmf_fil_iovar_data_set(ifp, "p2p_ifdel", addr, ETH_ALEN);
}
/**
* brcmf_p2p_create_p2pdev() - create a P2P_DEVICE virtual interface.
*
* @p2p: P2P specific data.
* @wiphy: wiphy device of new interface.
* @addr: mac address for this new interface.
*/
static struct wireless_dev *brcmf_p2p_create_p2pdev(struct brcmf_p2p_info *p2p,
struct wiphy *wiphy,
u8 *addr)
{
struct brcmf_cfg80211_vif *p2p_vif;
struct brcmf_if *p2p_ifp;
struct brcmf_if *pri_ifp;
int err;
u32 bssidx;
if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
return ERR_PTR(-ENOSPC);
p2p_vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE,
false);
if (IS_ERR(p2p_vif)) {
brcmf_err("could not create discovery vif\n");
return (struct wireless_dev *)p2p_vif;
}
/* create ifp here */
p2p_ifp = kzalloc(sizeof(*p2p_ifp), GFP_KERNEL);
if (!p2p_ifp)
return ERR_PTR(-ENOMEM);
p2p_vif->ifp = p2p_ifp;
p2p_ifp->vif = p2p_vif;
p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif;
brcmf_p2p_generate_bss_mac(p2p, addr);
memcpy(&p2p_vif->wdev.address, p2p->dev_addr, sizeof(p2p->dev_addr));
pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
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);
return ERR_PTR(err);
}
/* 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);
return ERR_PTR(err);
}
p2p_ifp->drvr = p2p->cfg->pub;
p2p_ifp->bssidx = bssidx;
init_completion(&p2p->send_af_done);
INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler);
init_completion(&p2p->afx_hdl.act_frm_scan);
init_completion(&p2p->wait_next_af);
return &p2p_vif->wdev;
}
/**
* brcmf_p2p_delete_p2pdev() - delete P2P_DEVICE virtual interface.
*
* @vif: virtual interface object to delete.
*/
static void brcmf_p2p_delete_p2pdev(struct brcmf_cfg80211_vif *vif)
{
struct brcmf_p2p_info *p2p = &vif->ifp->drvr->config->p2p;
cfg80211_unregister_wdev(&vif->wdev);
p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL;
kfree(vif->ifp);
brcmf_free_vif(vif);
}
/**
* brcmf_p2p_add_vif() - create a new P2P virtual interface.
*
* @wiphy: wiphy device of new interface.
* @name: name of the new interface.
* @type: nl80211 interface type.
* @flags: TBD
* @params: TBD
* @flags: not used.
* @params: contains mac address for P2P device.
*/
struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name,
enum nl80211_iftype type, u32 *flags,
@ -2158,6 +2253,9 @@ struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name,
iftype = BRCMF_FIL_P2P_IF_GO;
mode = WL_MODE_AP;
break;
case NL80211_IFTYPE_P2P_DEVICE:
return brcmf_p2p_create_p2pdev(&cfg->p2p, wiphy,
params->macaddr);
default:
return ERR_PTR(-EOPNOTSUPP);
}
@ -2245,6 +2343,8 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)
break;
case NL80211_IFTYPE_P2P_DEVICE:
brcmf_p2p_delete_p2pdev(vif);
return 0;
default:
return -ENOTSUPP;
break;
@ -2276,3 +2376,33 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)
return err;
}
int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev)
{
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
struct brcmf_p2p_info *p2p = &cfg->p2p;
struct brcmf_cfg80211_vif *vif;
int err;
vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
mutex_lock(&cfg->usr_sync);
err = brcmf_p2p_enable_discovery(p2p);
if (!err)
set_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);
mutex_unlock(&cfg->usr_sync);
return err;
}
void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev)
{
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
struct brcmf_p2p_info *p2p = &cfg->p2p;
struct brcmf_cfg80211_vif *vif;
vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
mutex_lock(&cfg->usr_sync);
(void)brcmf_p2p_deinit_discovery(p2p);
brcmf_abort_scanning(cfg);
clear_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state);
mutex_unlock(&cfg->usr_sync);
}

6
drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
View file

@ -482,9 +482,9 @@ static struct wireless_dev *brcmf_cfg80211_add_iface(struct wiphy *wiphy,
return ERR_PTR(-EOPNOTSUPP);
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_P2P_DEVICE:
return brcmf_p2p_add_vif(wiphy, name, type, flags, params);
case NL80211_IFTYPE_UNSPECIFIED:
case NL80211_IFTYPE_P2P_DEVICE:
default:
return ERR_PTR(-EINVAL);
}
@ -594,9 +594,9 @@ int brcmf_cfg80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
return -EOPNOTSUPP;
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_P2P_DEVICE:
return brcmf_p2p_del_vif(wiphy, wdev);
case NL80211_IFTYPE_UNSPECIFIED:
case NL80211_IFTYPE_P2P_DEVICE:
default:
return -EINVAL;
}
@ -4023,6 +4023,8 @@ static struct cfg80211_ops wl_cfg80211_ops = {
.mgmt_tx = brcmf_cfg80211_mgmt_tx,
.remain_on_channel = brcmf_p2p_remain_on_channel,
.cancel_remain_on_channel = brcmf_cfg80211_cancel_remain_on_channel,
.start_p2p_device = brcmf_p2p_start_device,
.stop_p2p_device = brcmf_p2p_stop_device,
#ifdef CONFIG_NL80211_TESTMODE
.testmode_cmd = brcmf_cfg80211_testmode
#endif