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Miller" , =?utf-8?b?SsOpcsO0bWUgUG91?= =?utf-8?q?iller?= Subject: [PATCH v2 46/65] staging: wfx: relocate "buffered" information to sta_priv Thread-Topic: [PATCH v2 46/65] staging: wfx: relocate "buffered" information to sta_priv Thread-Index: AQHVy6tm4JGe3+qchECT4G6SL0M87w== Date: Wed, 15 Jan 2020 13:55:09 +0000 Message-ID: <20200115135338.14374-47-Jerome.Pouiller@silabs.com> References: <20200115135338.14374-1-Jerome.Pouiller@silabs.com> In-Reply-To: <20200115135338.14374-1-Jerome.Pouiller@silabs.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: PR2P264CA0008.FRAP264.PROD.OUTLOOK.COM (2603:10a6:101::20) To MN2PR11MB4063.namprd11.prod.outlook.com (2603:10b6:208:13f::22) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Jerome.Pouiller@silabs.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.25.0 x-originating-ip: [2a01:e35:8bf5:66a0:3dbe:4cb5:6059:a948] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: f8354f39-d3af-42ab-f250-08d799c288bf x-ms-traffictypediagnostic: MN2PR11MB3661: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:6430; x-forefront-prvs: 02830F0362 x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(39860400002)(376002)(396003)(136003)(346002)(366004)(199004)(189003)(8886007)(6486002)(316002)(54906003)(71200400001)(36756003)(6506007)(66476007)(66446008)(66946007)(110136005)(8676002)(81166006)(81156014)(478600001)(86362001)(2616005)(4326008)(66574012)(2906002)(107886003)(1076003)(16526019)(186003)(85202003)(5660300002)(6512007)(52116002)(64756008)(66556008)(85182001)(8936002); DIR:OUT; SFP:1101; SCL:1; SRVR:MN2PR11MB3661; H:MN2PR11MB4063.namprd11.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: silabs.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: T1qyIWEd3/AvDotyw+mNpCTwbLbPYkr8R9Vjodzp8YCltkcZCLOHCk4ke9/8ELfwH5zB0i25evXe3Ef5rR3oryBNEXtqnBIMq2uwY6z9IKNbKSAs/7li2LO2xzWNhfBBxpdFuqAM2iOM0WhtKE4fFFYKU07AlrZXEpQePcdwXbDt0qF1Y15+52fBHVZfW2GTD5NX2tcgvC2xdr+eee6xCQiozTKbEBZvbOOq6uO679CMB4l+gn3D4Fdawq5F4emQbSVJirs/V3L4JZ/nmYSP1oVI7W5aEEquDfAhi09qMga429YHtabEEx8o+S0eTj/g3mpYwzOY1O2tlDUzUTccAR+F1Rv4O2OPphSY38X99VEXFDkD5NHxIvN5ZubwGzcF2PZhfsKEuGve3YTRHVWdbqo/sYnfiuMGGwfal/2uCWA5TdyiP+fFD0jWB0VAnzAM Content-ID: MIME-Version: 1.0 X-OriginatorOrg: silabs.com X-MS-Exchange-CrossTenant-Network-Message-Id: f8354f39-d3af-42ab-f250-08d799c288bf X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Jan 2020 13:55:09.5039 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 54dbd822-5231-4b20-944d-6f4abcd541fb X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: jBEh5aDgNxD2H1tDJYOYHXdeOo7PBr/qeRfU+h0ASXRXYKqumzVBcETXQCV9ccwMYPRukqYlM+DAor9U00P3VQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR11MB3661 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Jérôme Pouiller It simplify the code if field buffered is hosted in the struct sta_priv instead of in the struct wfx_link_entry. More globally, struct wfx_link_entry has no real reasons to exist and should be dropped soon. Signed-off-by: Jérôme Pouiller --- drivers/staging/wfx/data_tx.c | 50 ++++++++++++++++------------------- drivers/staging/wfx/data_tx.h | 4 --- drivers/staging/wfx/sta.c | 1 + drivers/staging/wfx/sta.h | 6 +++++ 4 files changed, 30 insertions(+), 31 deletions(-) diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c index e669fc4485e6..9313c8f5d4d8 100644 --- a/drivers/staging/wfx/data_tx.c +++ b/drivers/staging/wfx/data_tx.c @@ -291,7 +291,6 @@ static int wfx_alloc_link_id(struct wfx_vif *wvif, const u8 *mac) entry->status = WFX_LINK_RESERVE; ether_addr_copy(entry->mac, mac); - memset(&entry->buffered, 0, WFX_MAX_TID); wfx_tx_lock(wvif->wdev); if (!schedule_work(&wvif->link_id_work)) @@ -434,6 +433,7 @@ static void wfx_tx_manage_pm(struct wfx_vif *wvif, struct ieee80211_hdr *hdr, struct ieee80211_sta *sta) { u32 mask = ~BIT(tx_priv->raw_link_id); + struct wfx_sta_priv *sta_priv; spin_lock_bh(&wvif->ps_state_lock); if (ieee80211_is_auth(hdr->frame_control)) { @@ -448,15 +448,17 @@ static void wfx_tx_manage_pm(struct wfx_vif *wvif, struct ieee80211_hdr *hdr, schedule_work(&wvif->mcast_start_work); } - if (tx_priv->raw_link_id) { + if (tx_priv->raw_link_id) wvif->link_id_db[tx_priv->raw_link_id - 1].timestamp = jiffies; - if (tx_priv->tid < WFX_MAX_TID) - wvif->link_id_db[tx_priv->raw_link_id - 1].buffered[tx_priv->tid]++; - } spin_unlock_bh(&wvif->ps_state_lock); - if (sta) + if (sta && tx_priv->tid < WFX_MAX_TID) { + sta_priv = (struct wfx_sta_priv *)&sta->drv_priv; + spin_lock_bh(&sta_priv->lock); + sta_priv->buffered[tx_priv->tid]++; ieee80211_sta_set_buffered(sta, tx_priv->tid, true); + spin_unlock_bh(&sta_priv->lock); + } } static u8 wfx_tx_get_raw_link_id(struct wfx_vif *wvif, @@ -789,31 +791,25 @@ void wfx_tx_confirm_cb(struct wfx_vif *wvif, const struct hif_cnf_tx *arg) wfx_pending_remove(wvif->wdev, skb); } -static void wfx_notify_buffered_tx(struct wfx_vif *wvif, struct sk_buff *skb, - struct hif_req_tx *req) +static void wfx_notify_buffered_tx(struct wfx_vif *wvif, struct sk_buff *skb) { + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; struct ieee80211_sta *sta; - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct wfx_sta_priv *sta_priv; int tid = wfx_tx_get_tid(hdr); - int raw_link_id = req->queue_id.peer_sta_id; - u8 *buffered; - if (raw_link_id && tid < WFX_MAX_TID) { - buffered = wvif->link_id_db[raw_link_id - 1].buffered; - - spin_lock_bh(&wvif->ps_state_lock); - WARN(!buffered[tid], "inconsistent notification"); - buffered[tid]--; - spin_unlock_bh(&wvif->ps_state_lock); - - if (!buffered[tid]) { - rcu_read_lock(); - sta = ieee80211_find_sta(wvif->vif, hdr->addr1); - if (sta) - ieee80211_sta_set_buffered(sta, tid, false); - rcu_read_unlock(); - } + rcu_read_lock(); // protect sta + sta = ieee80211_find_sta(wvif->vif, hdr->addr1); + if (sta && tid < WFX_MAX_TID) { + sta_priv = (struct wfx_sta_priv *)&sta->drv_priv; + spin_lock_bh(&sta_priv->lock); + WARN(!sta_priv->buffered[tid], "inconsistent notification"); + sta_priv->buffered[tid]--; + if (!sta_priv->buffered[tid]) + ieee80211_sta_set_buffered(sta, tid, false); + spin_unlock_bh(&sta_priv->lock); } + rcu_read_unlock(); } void wfx_skb_dtor(struct wfx_dev *wdev, struct sk_buff *skb) @@ -827,7 +823,7 @@ void wfx_skb_dtor(struct wfx_dev *wdev, struct sk_buff *skb) WARN_ON(!wvif); skb_pull(skb, offset); - wfx_notify_buffered_tx(wvif, skb, req); + wfx_notify_buffered_tx(wvif, skb); wfx_tx_policy_put(wvif, req->tx_flags.retry_policy_index); ieee80211_tx_status_irqsafe(wdev->hw, skb); } diff --git a/drivers/staging/wfx/data_tx.h b/drivers/staging/wfx/data_tx.h index 54738c2e3eac..d02a7b325b27 100644 --- a/drivers/staging/wfx/data_tx.h +++ b/drivers/staging/wfx/data_tx.h @@ -14,9 +14,6 @@ #include "hif_api_cmd.h" #include "hif_api_mib.h" -// FIXME: use IEEE80211_NUM_TIDS -#define WFX_MAX_TID 8 - struct wfx_tx_priv; struct wfx_dev; struct wfx_vif; @@ -33,7 +30,6 @@ struct wfx_link_entry { enum wfx_link_status status; u8 mac[ETH_ALEN]; u8 old_mac[ETH_ALEN]; - u8 buffered[WFX_MAX_TID]; }; struct tx_policy { diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c index 4a44d72f0db1..aebce96dcd4a 100644 --- a/drivers/staging/wfx/sta.c +++ b/drivers/staging/wfx/sta.c @@ -572,6 +572,7 @@ int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *) &sta->drv_priv; struct wfx_link_entry *entry; + spin_lock_init(&sta_priv->lock); if (wvif->vif->type != NL80211_IFTYPE_AP) return 0; diff --git a/drivers/staging/wfx/sta.h b/drivers/staging/wfx/sta.h index e0b54332e98a..47d94d6b8590 100644 --- a/drivers/staging/wfx/sta.h +++ b/drivers/staging/wfx/sta.h @@ -12,6 +12,9 @@ #include "hif_api_cmd.h" +// FIXME: use IEEE80211_NUM_TIDS +#define WFX_MAX_TID 8 + struct wfx_dev; struct wfx_vif; @@ -37,6 +40,9 @@ struct wfx_grp_addr_table { struct wfx_sta_priv { int link_id; int vif_id; + u8 buffered[WFX_MAX_TID]; + // Ensure atomicity of "buffered" and calls to ieee80211_sta_set_buffered() + spinlock_t lock; }; // mac80211 interface