From 27f10e380ad912c7928e08c4d04b246e66022cc4 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Fri, 5 Apr 2013 10:57:50 +0200 Subject: [PATCH] brcmfmac: support creation of P2P_DEVICE through user-space 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 Reviewed-by: Piotr Haber Reviewed-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmfmac/p2p.c | 148 ++++++++++++++++-- .../wireless/brcm80211/brcmfmac/wl_cfg80211.c | 6 +- 2 files changed, 143 insertions(+), 11 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c index e587dfb5d256..5d5d1e48a383 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c @@ -15,6 +15,7 @@ */ #include #include +#include #include #include @@ -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); +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c index d4e12018dce2..cba757b792b0 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c @@ -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 -- 2.20.1