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Miller" , =?utf-8?b?SsOpcsO0bWUgUG91?= =?utf-8?q?iller?= Subject: [PATCH v2 22/55] staging: wfx: ensure that received hif messages are never modified Thread-Topic: [PATCH v2 22/55] staging: wfx: ensure that received hif messages are never modified Thread-Index: AQHVtPUhkZeRFXFsYE2DspeYg3LT4w== Date: Tue, 17 Dec 2019 16:14:59 +0000 Message-ID: <20191217161318.31402-23-Jerome.Pouiller@silabs.com> References: <20191217161318.31402-1-Jerome.Pouiller@silabs.com> In-Reply-To: <20191217161318.31402-1-Jerome.Pouiller@silabs.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: PR0P264CA0174.FRAP264.PROD.OUTLOOK.COM (2603:10a6:100:1c::18) 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 2.24.0 x-originating-ip: [37.71.187.125] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: d09a0683-48ad-4695-906b-08d7830c439b x-ms-traffictypediagnostic: MN2PR11MB4208: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:4125; x-forefront-prvs: 02543CD7CD x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(39850400004)(396003)(366004)(136003)(376002)(346002)(199004)(189003)(5660300002)(316002)(6506007)(85182001)(478600001)(71200400001)(2906002)(36756003)(186003)(26005)(81166006)(54906003)(1076003)(110136005)(66574012)(4326008)(8676002)(86362001)(6486002)(15650500001)(52116002)(6512007)(30864003)(64756008)(85202003)(66946007)(66476007)(66446008)(66556008)(8936002)(107886003)(2616005)(81156014); DIR:OUT; SFP:1101; SCL:1; SRVR:MN2PR11MB4208; 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: Rq7yx8xi1r2ltHF+mFuiP4ebgdWXC1cW85pS1O4CmI/xbPqnkBAbAivVqlyniihBCkQWFGwYDkza0KwvXOCPzQlGPuJ1KLb/3j9NnV79fTEIFMY4PAK3e8LJX3Je+VbFZJfWl0WAQOH8A2pEFnoUNVODXp0Jz4p3JElEexbUCzlnOtY67q5pvl3IvFufeXdBsuC5RNUu7jCh9BjiN9pWsl3Aw4ps57o+hEi2/cKxwqNoYmxV7RkD5K4XCVoh8cehcmxCtE+zWKxIg/UM+A4s42Kz3/3FpXFXqy6hPi/nF9p7Ua5WXaZLRA6s2slaM6fZNeAq2wX8tcMKtYQeubA7EBKMWfbLM4H5GNKTnNNriqOK31B5ehPSZDP9LvDKNPcg5yJAww96y6TNqJfn7eK9ygt45x+aQC0QaForQBsq1xdfupnKim8rLggYV8TenqdU Content-ID: MIME-Version: 1.0 X-OriginatorOrg: silabs.com X-MS-Exchange-CrossTenant-Network-Message-Id: d09a0683-48ad-4695-906b-08d7830c439b X-MS-Exchange-CrossTenant-originalarrivaltime: 17 Dec 2019 16:14:59.5088 (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: FGPFFJwUcItTQqE4E4tPaJhABQKFQFwRYBIO4Avek4s2oJCcuqbTxkeGUONXcCf454W3AC0hm0Yu9bbfq8ZiTA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR11MB4208 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Jérôme Pouiller There are no real reason to modify the data received from device. So, let's mark the arguments constant. Signed-off-by: Jérôme Pouiller --- drivers/staging/wfx/data_rx.c | 8 ++- drivers/staging/wfx/data_rx.h | 4 +- drivers/staging/wfx/data_tx.c | 2 +- drivers/staging/wfx/data_tx.h | 2 +- drivers/staging/wfx/hif_rx.c | 94 +++++++++++++++++-------------- drivers/staging/wfx/scan.c | 3 +- drivers/staging/wfx/scan.h | 3 +- drivers/staging/wfx/secure_link.h | 8 ++- drivers/staging/wfx/sta.c | 2 +- drivers/staging/wfx/sta.h | 2 +- 10 files changed, 72 insertions(+), 56 deletions(-) diff --git a/drivers/staging/wfx/data_rx.c b/drivers/staging/wfx/data_rx.c index e7fcce8d0cc4..d460c0ffca1f 100644 --- a/drivers/staging/wfx/data_rx.c +++ b/drivers/staging/wfx/data_rx.c @@ -48,7 +48,9 @@ static int wfx_handle_pspoll(struct wfx_vif *wvif, struct sk_buff *skb) return 0; } -static int wfx_drop_encrypt_data(struct wfx_dev *wdev, struct hif_ind_rx *arg, struct sk_buff *skb) +static int wfx_drop_encrypt_data(struct wfx_dev *wdev, + const struct hif_ind_rx *arg, + struct sk_buff *skb) { struct ieee80211_hdr *frame = (struct ieee80211_hdr *) skb->data; size_t hdrlen = ieee80211_hdrlen(frame->frame_control); @@ -98,8 +100,8 @@ static int wfx_drop_encrypt_data(struct wfx_dev *wdev, struct hif_ind_rx *arg, s } -void wfx_rx_cb(struct wfx_vif *wvif, struct hif_ind_rx *arg, - struct sk_buff *skb) +void wfx_rx_cb(struct wfx_vif *wvif, + const struct hif_ind_rx *arg, struct sk_buff *skb) { int link_id = arg->rx_flags.peer_sta_id; struct ieee80211_rx_status *hdr = IEEE80211_SKB_RXCB(skb); diff --git a/drivers/staging/wfx/data_rx.h b/drivers/staging/wfx/data_rx.h index a50ce352bc5e..61c28bfd2a37 100644 --- a/drivers/staging/wfx/data_rx.h +++ b/drivers/staging/wfx/data_rx.h @@ -13,7 +13,7 @@ struct wfx_vif; struct sk_buff; -void wfx_rx_cb(struct wfx_vif *wvif, struct hif_ind_rx *arg, - struct sk_buff *skb); +void wfx_rx_cb(struct wfx_vif *wvif, + const struct hif_ind_rx *arg, struct sk_buff *skb); #endif /* WFX_DATA_RX_H */ diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c index c9dea627661f..a45243a7f15f 100644 --- a/drivers/staging/wfx/data_tx.c +++ b/drivers/staging/wfx/data_tx.c @@ -720,7 +720,7 @@ void wfx_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, ieee80211_tx_status_irqsafe(wdev->hw, skb); } -void wfx_tx_confirm_cb(struct wfx_vif *wvif, struct hif_cnf_tx *arg) +void wfx_tx_confirm_cb(struct wfx_vif *wvif, const struct hif_cnf_tx *arg) { int i; int tx_count; diff --git a/drivers/staging/wfx/data_tx.h b/drivers/staging/wfx/data_tx.h index 0fc388db62e0..078d0cfc521a 100644 --- a/drivers/staging/wfx/data_tx.h +++ b/drivers/staging/wfx/data_tx.h @@ -65,7 +65,7 @@ void wfx_tx_policy_upload_work(struct work_struct *work); void wfx_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struct sk_buff *skb); -void wfx_tx_confirm_cb(struct wfx_vif *wvif, struct hif_cnf_tx *arg); +void wfx_tx_confirm_cb(struct wfx_vif *wvif, const struct hif_cnf_tx *arg); void wfx_skb_dtor(struct wfx_dev *wdev, struct sk_buff *skb); int wfx_unmap_link(struct wfx_vif *wvif, int link_id); diff --git a/drivers/staging/wfx/hif_rx.c b/drivers/staging/wfx/hif_rx.c index 1494ad5a507b..8a3ccdc60b7d 100644 --- a/drivers/staging/wfx/hif_rx.c +++ b/drivers/staging/wfx/hif_rx.c @@ -18,8 +18,8 @@ #include "secure_link.h" #include "hif_api_cmd.h" -static int hif_generic_confirm(struct wfx_dev *wdev, struct hif_msg *hif, - void *buf) +static int hif_generic_confirm(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) { // All confirm messages start with status int status = le32_to_cpu(*((__le32 *) buf)); @@ -59,9 +59,10 @@ static int hif_generic_confirm(struct wfx_dev *wdev, struct hif_msg *hif, return status; } -static int hif_tx_confirm(struct wfx_dev *wdev, struct hif_msg *hif, void *buf) +static int hif_tx_confirm(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) { - struct hif_cnf_tx *body = buf; + const struct hif_cnf_tx *body = buf; struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); WARN_ON(!wvif); @@ -72,11 +73,12 @@ static int hif_tx_confirm(struct wfx_dev *wdev, struct hif_msg *hif, void *buf) return 0; } -static int hif_multi_tx_confirm(struct wfx_dev *wdev, struct hif_msg *hif, - void *buf) +static int hif_multi_tx_confirm(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) { - struct hif_cnf_multi_transmit *body = buf; - struct hif_cnf_tx *buf_loc = (struct hif_cnf_tx *) &body->tx_conf_payload; + const struct hif_cnf_multi_transmit *body = buf; + const struct hif_cnf_tx *buf_loc = + (const struct hif_cnf_tx *)&body->tx_conf_payload; struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); int count = body->num_tx_confs; int i; @@ -93,10 +95,10 @@ static int hif_multi_tx_confirm(struct wfx_dev *wdev, struct hif_msg *hif, return 0; } -static int hif_startup_indication(struct wfx_dev *wdev, struct hif_msg *hif, - void *buf) +static int hif_startup_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) { - struct hif_ind_startup *body = buf; + const struct hif_ind_startup *body = buf; if (body->status || body->firmware_type > 4) { dev_err(wdev->dev, "received invalid startup indication"); @@ -112,8 +114,8 @@ static int hif_startup_indication(struct wfx_dev *wdev, struct hif_msg *hif, return 0; } -static int hif_wakeup_indication(struct wfx_dev *wdev, struct hif_msg *hif, - void *buf) +static int hif_wakeup_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) { if (!wdev->pdata.gpio_wakeup || !gpiod_get_value(wdev->pdata.gpio_wakeup)) { @@ -123,25 +125,27 @@ static int hif_wakeup_indication(struct wfx_dev *wdev, struct hif_msg *hif, return 0; } -static int hif_keys_indication(struct wfx_dev *wdev, struct hif_msg *hif, - void *buf) +static int hif_keys_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) { - struct hif_ind_sl_exchange_pub_keys *body = buf; + const struct hif_ind_sl_exchange_pub_keys *body = buf; + u8 pubkey[API_NCP_PUB_KEY_SIZE]; - // Compatibility with legacy secure link - if (body->status == SL_PUB_KEY_EXCHANGE_STATUS_SUCCESS) - body->status = 0; - if (body->status) + // SL_PUB_KEY_EXCHANGE_STATUS_SUCCESS is used by legacy secure link + if (body->status && body->status != SL_PUB_KEY_EXCHANGE_STATUS_SUCCESS) dev_warn(wdev->dev, "secure link negociation error\n"); - wfx_sl_check_pubkey(wdev, body->ncp_pub_key, body->ncp_pub_key_mac); + memcpy(pubkey, body->ncp_pub_key, sizeof(pubkey)); + memreverse(pubkey, sizeof(pubkey)); + wfx_sl_check_pubkey(wdev, pubkey, body->ncp_pub_key_mac); return 0; } -static int hif_receive_indication(struct wfx_dev *wdev, struct hif_msg *hif, - void *buf, struct sk_buff *skb) +static int hif_receive_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, + const void *buf, struct sk_buff *skb) { struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); - struct hif_ind_rx *body = buf; + const struct hif_ind_rx *body = buf; if (!wvif) { dev_warn(wdev->dev, "ignore rx data for non-existent vif %d\n", @@ -154,11 +158,11 @@ static int hif_receive_indication(struct wfx_dev *wdev, struct hif_msg *hif, return 0; } -static int hif_event_indication(struct wfx_dev *wdev, struct hif_msg *hif, - void *buf) +static int hif_event_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) { struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); - struct hif_ind_event *body = buf; + const struct hif_ind_event *body = buf; struct wfx_hif_event *event; int first; @@ -183,7 +187,8 @@ static int hif_event_indication(struct wfx_dev *wdev, struct hif_msg *hif, } static int hif_pm_mode_complete_indication(struct wfx_dev *wdev, - struct hif_msg *hif, void *buf) + const struct hif_msg *hif, + const void *buf) { struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); @@ -194,10 +199,11 @@ static int hif_pm_mode_complete_indication(struct wfx_dev *wdev, } static int hif_scan_complete_indication(struct wfx_dev *wdev, - struct hif_msg *hif, void *buf) + const struct hif_msg *hif, + const void *buf) { struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); - struct hif_ind_scan_cmpl *body = buf; + const struct hif_ind_scan_cmpl *body = buf; WARN_ON(!wvif); wfx_scan_complete_cb(wvif, body); @@ -206,7 +212,8 @@ static int hif_scan_complete_indication(struct wfx_dev *wdev, } static int hif_join_complete_indication(struct wfx_dev *wdev, - struct hif_msg *hif, void *buf) + const struct hif_msg *hif, + const void *buf) { struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); @@ -217,10 +224,11 @@ static int hif_join_complete_indication(struct wfx_dev *wdev, } static int hif_suspend_resume_indication(struct wfx_dev *wdev, - struct hif_msg *hif, void *buf) + const struct hif_msg *hif, + const void *buf) { struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface); - struct hif_ind_suspend_resume_tx *body = buf; + const struct hif_ind_suspend_resume_tx *body = buf; WARN_ON(!wvif); wfx_suspend_resume(wvif, body); @@ -228,10 +236,10 @@ static int hif_suspend_resume_indication(struct wfx_dev *wdev, return 0; } -static int hif_error_indication(struct wfx_dev *wdev, struct hif_msg *hif, - void *buf) +static int hif_error_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) { - struct hif_ind_error *body = buf; + const struct hif_ind_error *body = buf; u8 *pRollback = (u8 *) body->data; u32 *pStatus = (u32 *) body->data; @@ -268,10 +276,10 @@ static int hif_error_indication(struct wfx_dev *wdev, struct hif_msg *hif, return 0; } -static int hif_generic_indication(struct wfx_dev *wdev, struct hif_msg *hif, - void *buf) +static int hif_generic_indication(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf) { - struct hif_ind_generic *body = buf; + const struct hif_ind_generic *body = buf; switch (body->indication_type) { case HIF_GENERIC_INDICATION_TYPE_RAW: @@ -299,9 +307,10 @@ static int hif_generic_indication(struct wfx_dev *wdev, struct hif_msg *hif, } static int hif_exception_indication(struct wfx_dev *wdev, - struct hif_msg *hif, void *buf) + const struct hif_msg *hif, const void *buf) { size_t len = hif->len - 4; // drop header + dev_err(wdev->dev, "firmware exception\n"); print_hex_dump_bytes("Dump: ", DUMP_PREFIX_NONE, buf, len); wdev->chip_frozen = 1; @@ -311,7 +320,8 @@ static int hif_exception_indication(struct wfx_dev *wdev, static const struct { int msg_id; - int (*handler)(struct wfx_dev *wdev, struct hif_msg *hif, void *buf); + int (*handler)(struct wfx_dev *wdev, + const struct hif_msg *hif, const void *buf); } hif_handlers[] = { /* Confirmations */ { HIF_CNF_ID_TX, hif_tx_confirm }, @@ -335,7 +345,7 @@ static const struct { void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb) { int i; - struct hif_msg *hif = (struct hif_msg *) skb->data; + const struct hif_msg *hif = (const struct hif_msg *)skb->data; int hif_id = hif->id; if (hif_id == HIF_IND_ID_RX) { diff --git a/drivers/staging/wfx/scan.c b/drivers/staging/wfx/scan.c index a6c93400a7ba..45e78c5722ff 100644 --- a/drivers/staging/wfx/scan.c +++ b/drivers/staging/wfx/scan.c @@ -267,7 +267,8 @@ void wfx_scan_failed_cb(struct wfx_vif *wvif) } } -void wfx_scan_complete_cb(struct wfx_vif *wvif, struct hif_ind_scan_cmpl *arg) +void wfx_scan_complete_cb(struct wfx_vif *wvif, + const struct hif_ind_scan_cmpl *arg) { if (cancel_delayed_work_sync(&wvif->scan.timeout) > 0) { wvif->scan.status = 1; diff --git a/drivers/staging/wfx/scan.h b/drivers/staging/wfx/scan.h index b4ddd0771a9b..c7c0ab178c87 100644 --- a/drivers/staging/wfx/scan.h +++ b/drivers/staging/wfx/scan.h @@ -36,7 +36,8 @@ int wfx_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_scan_request *req); void wfx_scan_work(struct work_struct *work); void wfx_scan_timeout(struct work_struct *work); -void wfx_scan_complete_cb(struct wfx_vif *wvif, struct hif_ind_scan_cmpl *arg); +void wfx_scan_complete_cb(struct wfx_vif *wvif, + const struct hif_ind_scan_cmpl *arg); void wfx_scan_failed_cb(struct wfx_vif *wvif); #endif /* WFX_SCAN_H */ diff --git a/drivers/staging/wfx/secure_link.h b/drivers/staging/wfx/secure_link.h index 666b26e5308d..c3d055b2f8b1 100644 --- a/drivers/staging/wfx/secure_link.h +++ b/drivers/staging/wfx/secure_link.h @@ -25,14 +25,16 @@ static inline int wfx_sl_decode(struct wfx_dev *wdev, struct hif_sl_msg *m) return -EIO; } -static inline int wfx_sl_encode(struct wfx_dev *wdev, struct hif_msg *input, +static inline int wfx_sl_encode(struct wfx_dev *wdev, + const struct hif_msg *input, struct hif_sl_msg *output) { return -EIO; } -static inline int wfx_sl_check_pubkey(struct wfx_dev *wdev, u8 *ncp_pubkey, - u8 *ncp_pubmac) +static inline int wfx_sl_check_pubkey(struct wfx_dev *wdev, + const u8 *ncp_pubkey, + const u8 *ncp_pubmac) { return -EIO; } diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c index 7f4eaa8e6d84..b4bb5b653e64 100644 --- a/drivers/staging/wfx/sta.c +++ b/drivers/staging/wfx/sta.c @@ -1345,7 +1345,7 @@ int wfx_ampdu_action(struct ieee80211_hw *hw, } void wfx_suspend_resume(struct wfx_vif *wvif, - struct hif_ind_suspend_resume_tx *arg) + const struct hif_ind_suspend_resume_tx *arg) { if (arg->suspend_resume_flags.bc_mc_only) { bool cancel_tmo = false; diff --git a/drivers/staging/wfx/sta.h b/drivers/staging/wfx/sta.h index 4ccf1b17632b..721b7cee9c10 100644 --- a/drivers/staging/wfx/sta.h +++ b/drivers/staging/wfx/sta.h @@ -92,7 +92,7 @@ void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw, // WSM Callbacks void wfx_suspend_resume(struct wfx_vif *wvif, - struct hif_ind_suspend_resume_tx *arg); + const struct hif_ind_suspend_resume_tx *arg); // Other Helpers void wfx_cqm_bssloss_sm(struct wfx_vif *wvif, int init, int good, int bad);