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Date: Fri, 26 Aug 2016 20:58:17 +0300
From: Claudiu Beznea <claudiu.beznea@...il.com>
To: gregkh@...uxfoundation.org
Cc: devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
Claudiu Beznea <claudiu.beznea@...il.com>
Subject: [PATCH v2] Staging: wlan-ng: replace switch-case statements with macro
This patch removes multiple switch-case statements
with a new macro. The macro will generate the
corresponding bit mask based on the key index
received as input.
Chances since v1:
Corrected patch title
Signed-off-by: Claudiu Beznea <claudiu.beznea@...il.com>
---
drivers/staging/wlan-ng/cfg80211.c | 85 ++++++---------------------------
drivers/staging/wlan-ng/p80211metadef.h | 4 ++
2 files changed, 19 insertions(+), 70 deletions(-)
diff --git a/drivers/staging/wlan-ng/cfg80211.c b/drivers/staging/wlan-ng/cfg80211.c
index f46dfe6..73ba264 100644
--- a/drivers/staging/wlan-ng/cfg80211.c
+++ b/drivers/staging/wlan-ng/cfg80211.c
@@ -150,6 +150,9 @@ static int prism2_add_key(struct wiphy *wiphy, struct net_device *dev,
int err = 0;
int result = 0;
+ if (key_index >= NUM_WEPKEYS)
+ return -EINVAL;
+
switch (params->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
@@ -160,27 +163,7 @@ static int prism2_add_key(struct wiphy *wiphy, struct net_device *dev,
goto exit;
/* send key to driver */
- switch (key_index) {
- case 0:
- did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
- break;
-
- case 1:
- did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
- break;
-
- case 2:
- did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
- break;
-
- case 3:
- did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
- break;
-
- default:
- err = -EINVAL;
- goto exit;
- }
+ did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_key(key_index + 1);
result = prism2_domibset_pstr32(wlandev, did,
params->key_len, params->key);
@@ -242,36 +225,13 @@ static int prism2_del_key(struct wiphy *wiphy, struct net_device *dev,
* a key, so we will cheat by setting the key to a bogus value
*/
- /* send key to driver */
- switch (key_index) {
- case 0:
- did =
- DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
- break;
-
- case 1:
- did =
- DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
- break;
-
- case 2:
- did =
- DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
- break;
-
- case 3:
- did =
- DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
- break;
-
- default:
- err = -EINVAL;
- goto exit;
- }
+ if (key_index >= NUM_WEPKEYS)
+ return -EINVAL;
+ /* send key to driver */
+ did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_key(key_index + 1);
result = prism2_domibset_pstr32(wlandev, did, 13, "0000000000000");
-exit:
if (result)
err = -EFAULT;
@@ -529,6 +489,11 @@ static int prism2_connect(struct wiphy *wiphy, struct net_device *dev,
/* Set the encryption - we only support wep */
if (is_wep) {
if (sme->key) {
+ if (sme->key_idx >= NUM_WEPKEYS) {
+ err = -EINVAL;
+ goto exit;
+ }
+
result = prism2_domibset_uint32(wlandev,
DIDmib_dot11smt_dot11PrivacyTable_dot11WEPDefaultKeyID,
sme->key_idx);
@@ -536,28 +501,8 @@ static int prism2_connect(struct wiphy *wiphy, struct net_device *dev,
goto exit;
/* send key to driver */
- switch (sme->key_idx) {
- case 0:
- did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey0;
- break;
-
- case 1:
- did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey1;
- break;
-
- case 2:
- did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey2;
- break;
-
- case 3:
- did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_dot11WEPDefaultKey3;
- break;
-
- default:
- err = -EINVAL;
- goto exit;
- }
-
+ did = DIDmib_dot11smt_dot11WEPDefaultKeysTable_key(
+ sme->key_idx + 1);
result = prism2_domibset_pstr32(wlandev,
did, sme->key_len,
(u8 *)sme->key);
diff --git a/drivers/staging/wlan-ng/p80211metadef.h b/drivers/staging/wlan-ng/p80211metadef.h
index 0ccfba1..98fda3d 100644
--- a/drivers/staging/wlan-ng/p80211metadef.h
+++ b/drivers/staging/wlan-ng/p80211metadef.h
@@ -171,6 +171,10 @@
(P80211DID_MKSECTION(1) | \
P80211DID_MKGROUP(4) | \
P80211DID_MKITEM(4) | 0x0c000000)
+#define DIDmib_dot11smt_dot11WEPDefaultKeysTable_key(_i) \
+ (P80211DID_MKSECTION(1) | \
+ P80211DID_MKGROUP(4) | \
+ P80211DID_MKITEM(_i) | 0x0c000000)
#define DIDmib_dot11smt_dot11PrivacyTable \
(P80211DID_MKSECTION(1) | \
P80211DID_MKGROUP(6))
--
1.9.1
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