linux-kernel - [PATCH 3/5] staging: r8188eu: fix the number of probereq retries

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20221126154253.178275-4-martin@kaiser.cx>
Date:   Sat, 26 Nov 2022 16:42:51 +0100
From:   Martin Kaiser <martin@...ser.cx>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Michael Straube <straube.linux@...il.com>,
        Pavel Skripkin <paskripkin@...il.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Martin Kaiser <martin@...ser.cx>
Subject: [PATCH 3/5] staging: r8188eu: fix the number of probereq retries

issue_probereq_ex sends a probe request and retries if this fails. There's
no point in making the number of retries configurable. Hard-code the value
that's used by issue_probereq_ex's only caller.

Simplify the code to check the loop condition only once.

Signed-off-by: Martin Kaiser <martin@...ser.cx>
---
 drivers/staging/r8188eu/core/rtw_mlme_ext.c   | 21 +++++++------------
 .../staging/r8188eu/include/rtw_mlme_ext.h    |  3 +--
 2 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_mlme_ext.c b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
index 990336244030..667f54e313ef 100644
--- a/drivers/staging/r8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
@@ -4482,21 +4482,16 @@ inline void issue_probereq(struct adapter *padapter, struct ndis_802_11_ssid *ps
 	_issue_probereq(padapter, pssid, da, false);
 }
 
-void issue_probereq_ex(struct adapter *padapter, struct ndis_802_11_ssid *pssid, u8 *da,
-		       int try_cnt)
+void issue_probereq_ex(struct adapter *padapter, struct ndis_802_11_ssid *pssid, u8 *da)
 {
-	int ret;
-	int i = 0;
-
-	do {
-		ret = _issue_probereq(padapter, pssid, da, true);
-
-		i++;
+	int i;
 
-		if (i < try_cnt && ret == _FAIL)
+	for (i = 0; i < 3; i++) {
+		if (_issue_probereq(padapter, pssid, da, true) == _FAIL)
 			msleep(1);
-
-	} while ((i < try_cnt) && (ret == _FAIL));
+		else
+			break;
+	}
 }
 
 /*  if psta == NULL, indicate we are station (client) now... */
@@ -7046,7 +7041,7 @@ void linked_status_chk(struct adapter *padapter)
 				}
 
 				if (rx_chk != _SUCCESS)
-					issue_probereq_ex(padapter, &pmlmeinfo->network.Ssid, psta->hwaddr, 3);
+					issue_probereq_ex(padapter, &pmlmeinfo->network.Ssid, psta->hwaddr);
 
 				if ((tx_chk != _SUCCESS && pmlmeinfo->link_count++ == 0xf) || rx_chk != _SUCCESS) {
 					tx_chk = issue_nulldata(padapter, psta->hwaddr, 0, 3, 1);
diff --git a/drivers/staging/r8188eu/include/rtw_mlme_ext.h b/drivers/staging/r8188eu/include/rtw_mlme_ext.h
index 04fd673d3a04..089bd5446773 100644
--- a/drivers/staging/r8188eu/include/rtw_mlme_ext.h
+++ b/drivers/staging/r8188eu/include/rtw_mlme_ext.h
@@ -512,8 +512,7 @@ void issue_auth(struct adapter *padapter, struct sta_info *psta,
 		unsigned short status);
 void issue_probereq(struct adapter *padapter, struct ndis_802_11_ssid *pssid,
 		    u8 *da);
-void issue_probereq_ex(struct adapter *adapter, struct ndis_802_11_ssid *pssid,
-		       u8 *da, int try_cnt);
+void issue_probereq_ex(struct adapter *padapter, struct ndis_802_11_ssid *pssid, u8 *da);
 int issue_nulldata(struct adapter *padapter, unsigned char *da,
 		   unsigned int power_mode, int try_cnt, int wait_ms);
 int issue_qos_nulldata(struct adapter *padapter, unsigned char *da,
-- 
2.30.2