Return-path: Received: from alexa-out-ams-01.qualcomm.com ([185.23.61.162]:21767 "EHLO alexa-out-ams-01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751022AbeBZSNE (ORCPT ); Mon, 26 Feb 2018 13:13:04 -0500 From: Maya Erez To: Kalle Valo Cc: Lior David , linux-wireless@vger.kernel.org, wil6210@qti.qualcomm.com, Maya Erez Subject: [PATCH v2 1/8] wil6210: add wil6210_vif structure for per-VIF data Date: Mon, 26 Feb 2018 20:12:11 +0200 Message-Id: <1519668738-16912-2-git-send-email-merez@codeaurora.org> (sfid-20180226_191316_987893_DF074433) In-Reply-To: <1519668738-16912-1-git-send-email-merez@codeaurora.org> References: <1519668738-16912-1-git-send-email-merez@codeaurora.org> Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Lior David For supporting multiple virtual interfaces in the future, introduce a wil6210_vif structure which will hold per-VIF data. Change the module initialization so wil6210_vif will be part of net_device structure, and wireless_dev will be embedded inside the wil6210_vif structure. This will allow us to find the appropriate wil6210_vif structure when we only have access to wireless_dev or net_device. Signed-off-by: Lior David Signed-off-by: Maya Erez --- drivers/net/wireless/ath/wil6210/cfg80211.c | 57 ++++++++++-------- drivers/net/wireless/ath/wil6210/netdev.c | 93 ++++++++++++++++++----------- drivers/net/wireless/ath/wil6210/wil6210.h | 22 +++++-- 3 files changed, 107 insertions(+), 65 deletions(-) diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c index b799a53..eeed85c 100644 --- a/drivers/net/wireless/ath/wil6210/cfg80211.c +++ b/drivers/net/wireless/ath/wil6210/cfg80211.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2012-2017 Qualcomm Atheros, Inc. + * Copyright (c) 2018, The Linux Foundation. All rights reserved. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -418,6 +419,7 @@ static void wil_cfg80211_stop_p2p_device(struct wiphy *wiphy, { struct wil6210_priv *wil = wiphy_to_wil(wiphy); struct net_device *ndev = wil_to_ndev(wil); + struct wil6210_vif *vif; struct wireless_dev *p2p_wdev; wil_dbg_misc(wil, "add_iface\n"); @@ -432,10 +434,11 @@ static void wil_cfg80211_stop_p2p_device(struct wiphy *wiphy, return ERR_PTR(-EINVAL); } - p2p_wdev = kzalloc(sizeof(*p2p_wdev), GFP_KERNEL); - if (!p2p_wdev) + vif = kzalloc(sizeof(*vif), GFP_KERNEL); + if (!vif) return ERR_PTR(-ENOMEM); + p2p_wdev = &vif->wdev; p2p_wdev->iftype = type; p2p_wdev->wiphy = wiphy; /* use our primary ethernet address */ @@ -1893,51 +1896,52 @@ static void wil_wiphy_init(struct wiphy *wiphy) #endif } -struct wireless_dev *wil_cfg80211_init(struct device *dev) +struct wil6210_priv *wil_cfg80211_init(struct device *dev) { - int rc = 0; - struct wireless_dev *wdev; + struct wiphy *wiphy; + struct wil6210_priv *wil; + struct ieee80211_channel *ch; dev_dbg(dev, "%s()\n", __func__); - wdev = kzalloc(sizeof(*wdev), GFP_KERNEL); - if (!wdev) + /* Note: the wireless_dev structure is no longer allocated here. + * Instead, it is allocated as part of the net_device structure + * for main interface and each VIF. + */ + wiphy = wiphy_new(&wil_cfg80211_ops, sizeof(struct wil6210_priv)); + if (!wiphy) return ERR_PTR(-ENOMEM); - wdev->wiphy = wiphy_new(&wil_cfg80211_ops, - sizeof(struct wil6210_priv)); - if (!wdev->wiphy) { - rc = -ENOMEM; - goto out; - } - - set_wiphy_dev(wdev->wiphy, dev); - wil_wiphy_init(wdev->wiphy); + set_wiphy_dev(wiphy, dev); + wil_wiphy_init(wiphy); - return wdev; + wil = wiphy_to_wil(wiphy); + wil->wiphy = wiphy; -out: - kfree(wdev); + /* default monitor channel */ + ch = wiphy->bands[NL80211_BAND_60GHZ]->channels; + cfg80211_chandef_create(&wil->monitor_chandef, ch, NL80211_CHAN_NO_HT); - return ERR_PTR(rc); + return wil; } -void wil_wdev_free(struct wil6210_priv *wil) +void wil_cfg80211_deinit(struct wil6210_priv *wil) { - struct wireless_dev *wdev = wil_to_wdev(wil); + struct wiphy *wiphy = wil_to_wiphy(wil); dev_dbg(wil_to_dev(wil), "%s()\n", __func__); - if (!wdev) + if (!wiphy) return; - wiphy_free(wdev->wiphy); - kfree(wdev); + wiphy_free(wiphy); + /* do not access wil6210_priv after returning from here */ } void wil_p2p_wdev_free(struct wil6210_priv *wil) { struct wireless_dev *p2p_wdev; + struct wil6210_vif *vif; mutex_lock(&wil->p2p_wdev_mutex); p2p_wdev = wil->p2p_wdev; @@ -1946,7 +1950,8 @@ void wil_p2p_wdev_free(struct wil6210_priv *wil) mutex_unlock(&wil->p2p_wdev_mutex); if (p2p_wdev) { cfg80211_unregister_wdev(p2p_wdev); - kfree(p2p_wdev); + vif = wdev_to_vif(p2p_wdev); + kfree(vif); } } diff --git a/drivers/net/wireless/ath/wil6210/netdev.c b/drivers/net/wireless/ath/wil6210/netdev.c index 7ba4e0a..648f636 100644 --- a/drivers/net/wireless/ath/wil6210/netdev.c +++ b/drivers/net/wireless/ath/wil6210/netdev.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2012-2017 Qualcomm Atheros, Inc. + * Copyright (c) 2018, The Linux Foundation. All rights reserved. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -121,63 +122,85 @@ static void wil_dev_setup(struct net_device *dev) dev->tx_queue_len = WIL_TX_Q_LEN_DEFAULT; } -void *wil_if_alloc(struct device *dev) +struct wil6210_vif * +wil_vif_alloc(struct wil6210_priv *wil, const char *name, + unsigned char name_assign_type, enum nl80211_iftype iftype, + u8 mid) { struct net_device *ndev; struct wireless_dev *wdev; + struct wil6210_vif *vif; + + ndev = alloc_netdev(sizeof(*vif), name, name_assign_type, + wil_dev_setup); + if (!ndev) { + dev_err(wil_to_dev(wil), "alloc_netdev failed\n"); + return ERR_PTR(-ENOMEM); + } + if (mid == 0) + wil->ndev = ndev; + vif = ndev_to_vif(ndev); + vif->wil = wil; + vif->mid = mid; + + wdev = &vif->wdev; + wdev->wiphy = wil->wiphy; + wdev->iftype = iftype; + + ndev->netdev_ops = &wil_netdev_ops; + wil_set_ethtoolops(ndev); + ndev->ieee80211_ptr = wdev; + ndev->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM | + NETIF_F_SG | NETIF_F_GRO | + NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_RXHASH; + + ndev->features |= ndev->hw_features; + SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy)); + wdev->netdev = ndev; + return vif; +} + +void *wil_if_alloc(struct device *dev) +{ + struct wireless_dev *wdev; struct wil6210_priv *wil; - struct ieee80211_channel *ch; + struct wil6210_vif *vif; int rc = 0; - wdev = wil_cfg80211_init(dev); - if (IS_ERR(wdev)) { + wil = wil_cfg80211_init(dev); + if (IS_ERR(wil)) { dev_err(dev, "wil_cfg80211_init failed\n"); - return wdev; + return wil; } - wil = wdev_to_wil(wdev); - wil->wdev = wdev; - wil->radio_wdev = wdev; - - wil_dbg_misc(wil, "if_alloc\n"); - rc = wil_priv_init(wil); if (rc) { dev_err(dev, "wil_priv_init failed\n"); - goto out_wdev; + goto out_cfg; } - wdev->iftype = NL80211_IFTYPE_STATION; /* TODO */ - /* default monitor channel */ - ch = wdev->wiphy->bands[NL80211_BAND_60GHZ]->channels; - cfg80211_chandef_create(&wil->monitor_chandef, ch, NL80211_CHAN_NO_HT); + wil_dbg_misc(wil, "if_alloc\n"); - ndev = alloc_netdev(0, "wlan%d", NET_NAME_UNKNOWN, wil_dev_setup); - if (!ndev) { - dev_err(dev, "alloc_netdev_mqs failed\n"); + vif = wil_vif_alloc(wil, "wlan%d", NET_NAME_UNKNOWN, + NL80211_IFTYPE_STATION, 0); + if (IS_ERR(vif)) { + dev_err(dev, "wil_vif_alloc failed\n"); rc = -ENOMEM; goto out_priv; } - ndev->netdev_ops = &wil_netdev_ops; - wil_set_ethtoolops(ndev); - ndev->ieee80211_ptr = wdev; - ndev->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM | - NETIF_F_SG | NETIF_F_GRO | - NETIF_F_TSO | NETIF_F_TSO6 | - NETIF_F_RXHASH; - - ndev->features |= ndev->hw_features; - SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy)); - wdev->netdev = ndev; + wdev = &vif->wdev; + wil->wdev = wdev; + wil->radio_wdev = wdev; return wil; - out_priv: +out_priv: wil_priv_deinit(wil); - out_wdev: - wil_wdev_free(wil); +out_cfg: + wil_cfg80211_deinit(wil); return ERR_PTR(rc); } @@ -196,13 +219,13 @@ void wil_if_free(struct wil6210_priv *wil) wil_to_ndev(wil) = NULL; free_netdev(ndev); - wil_wdev_free(wil); + wil_cfg80211_deinit(wil); } int wil_if_add(struct wil6210_priv *wil) { struct wireless_dev *wdev = wil_to_wdev(wil); - struct wiphy *wiphy = wdev->wiphy; + struct wiphy *wiphy = wil->wiphy; struct net_device *ndev = wil_to_ndev(wil); int rc; diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h index 0df2aad..b33aa7d 100644 --- a/drivers/net/wireless/ath/wil6210/wil6210.h +++ b/drivers/net/wireless/ath/wil6210/wil6210.h @@ -669,10 +669,18 @@ struct wil_debugfs_data { extern u8 led_id; extern u8 led_polarity; +struct wil6210_vif { + struct wireless_dev wdev; + struct wil6210_priv *wil; + u8 mid; +}; + struct wil6210_priv { struct pci_dev *pdev; u32 bar_size; + struct wiphy *wiphy; struct wireless_dev *wdev; + struct net_device *ndev; void __iomem *csr; DECLARE_BITMAP(status, wil_status_last); u8 fw_version[ETHTOOL_FWVERS_LEN]; @@ -798,13 +806,15 @@ struct wil6210_priv { u32 iccm_base; }; -#define wil_to_wiphy(i) (i->wdev->wiphy) +#define wil_to_wiphy(i) (i->wiphy) #define wil_to_dev(i) (wiphy_dev(wil_to_wiphy(i))) #define wiphy_to_wil(w) (struct wil6210_priv *)(wiphy_priv(w)) #define wil_to_wdev(i) (i->wdev) #define wdev_to_wil(w) (struct wil6210_priv *)(wdev_priv(w)) -#define wil_to_ndev(i) (wil_to_wdev(i)->netdev) +#define wil_to_ndev(i) (i->ndev) #define ndev_to_wil(n) (wdev_to_wil(n->ieee80211_ptr)) +#define ndev_to_vif(n) (struct wil6210_vif *)(netdev_priv(n)) +#define wdev_to_vif(w) (container_of(w, struct wil6210_vif, wdev)) __printf(2, 3) void wil_dbg_trace(struct wil6210_priv *wil, const char *fmt, ...); @@ -900,6 +910,10 @@ void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, size_t count); +struct wil6210_vif * +wil_vif_alloc(struct wil6210_priv *wil, const char *name, + unsigned char name_assign_type, enum nl80211_iftype iftype, + u8 mid); void *wil_if_alloc(struct device *dev); void wil_if_free(struct wil6210_priv *wil); int wil_if_add(struct wil6210_priv *wil); @@ -1010,8 +1024,8 @@ static inline void wil6210_debugfs_remove(struct wil6210_priv *wil) {} int wil_cid_fill_sinfo(struct wil6210_priv *wil, int cid, struct station_info *sinfo); -struct wireless_dev *wil_cfg80211_init(struct device *dev); -void wil_wdev_free(struct wil6210_priv *wil); +struct wil6210_priv *wil_cfg80211_init(struct device *dev); +void wil_cfg80211_deinit(struct wil6210_priv *wil); void wil_p2p_wdev_free(struct wil6210_priv *wil); int wmi_set_mac_address(struct wil6210_priv *wil, void *addr); -- 1.9.1