From 0ca6d8e74489b08aa34108fe00fc1ba1667301a7 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Fri, 26 Aug 2016 20:58:17 +0300 Subject: [PATCH] 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 Signed-off-by: Greg Kroah-Hartman --- 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 f46dfe6b24e8..a36e40d5b970 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 0ccfba1294de..98fda3dcd663 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)) -- 2.39.5