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hostap: slight optimization of addr compare

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Use possibly more efficient ether_addr_equal
instead of memcmp.

Cc: Jouni Malinen <j@w1.fi>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
dingtianhong 2013-12-26 19:41:15 +08:00 • committed by David S. Miller
parent 5e231c2c5a
commit d22fbd70c2
5 changed files with 22 additions and 24 deletions
Download patch file Download diff file Expand all files Collapse all files

28
drivers/net/wireless/hostap/hostap_ap.c
View file

@ -24,6 +24,7 @@
#include <linux/slab.h>
#include <linux/export.h>
#include <linux/moduleparam.h>
#include <linux/etherdevice.h>
#include "hostap_wlan.h"
#include "hostap.h"
@ -106,13 +107,12 @@ static void ap_sta_hash_del(struct ap_data *ap, struct sta_info *sta)
s = ap->sta_hash[STA_HASH(sta->addr)];
if (s == NULL) return;
if (memcmp(s->addr, sta->addr, ETH_ALEN) == 0) {
if (ether_addr_equal(s->addr, sta->addr)) {
ap->sta_hash[STA_HASH(sta->addr)] = s->hnext;
return;
}
while (s->hnext != NULL && memcmp(s->hnext->addr, sta->addr, ETH_ALEN)
!= 0)
while (s->hnext != NULL && !ether_addr_equal(s->hnext->addr, sta->addr))
s = s->hnext;
if (s->hnext != NULL)
s->hnext = s->hnext->hnext;
@ -435,7 +435,7 @@ int ap_control_del_mac(struct mac_restrictions *mac_restrictions, u8 *mac)
ptr != &mac_restrictions->mac_list; ptr = ptr->next) {
entry = list_entry(ptr, struct mac_entry, list);
if (memcmp(entry->addr, mac, ETH_ALEN) == 0) {
if (ether_addr_equal(entry->addr, mac)) {
list_del(ptr);
kfree(entry);
mac_restrictions->entries--;
@ -459,7 +459,7 @@ static int ap_control_mac_deny(struct mac_restrictions *mac_restrictions,
spin_lock_bh(&mac_restrictions->lock);
list_for_each_entry(entry, &mac_restrictions->mac_list, list) {
if (memcmp(entry->addr, mac, ETH_ALEN) == 0) {
if (ether_addr_equal(entry->addr, mac)) {
found = 1;
break;
}
@ -957,7 +957,7 @@ static struct sta_info* ap_get_sta(struct ap_data *ap, u8 *sta)
struct sta_info *s;
s = ap->sta_hash[STA_HASH(sta)];
while (s != NULL && memcmp(s->addr, sta, ETH_ALEN) != 0)
while (s != NULL && !ether_addr_equal(s->addr, sta))
s = s->hnext;
return s;
}
@ -1391,7 +1391,7 @@ static void handle_authen(local_info_t *local, struct sk_buff *skb,
status_code = __le16_to_cpu(*pos);
pos++;
if (memcmp(dev->dev_addr, hdr->addr2, ETH_ALEN) == 0 ||
if (ether_addr_equal(dev->dev_addr, hdr->addr2) ||
ap_control_mac_deny(&ap->mac_restrictions, hdr->addr2)) {
txt = "authentication denied";
resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
@ -1935,7 +1935,7 @@ static void handle_pspoll(local_info_t *local,
PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=%pM, TA=%pM PWRMGT=%d\n",
hdr->addr1, hdr->addr2, !!ieee80211_has_pm(hdr->frame_control));
if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) {
PDEBUG(DEBUG_AP,
"handle_pspoll - addr1(BSSID)=%pM not own MAC\n",
hdr->addr1);
@ -2230,7 +2230,7 @@ static void handle_ap_item(local_info_t *local, struct sk_buff *skb,
goto done;
}
if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) {
PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)=%pM"
" not own MAC\n", hdr->addr1);
goto done;
@ -2267,13 +2267,13 @@ static void handle_ap_item(local_info_t *local, struct sk_buff *skb,
goto done;
}
if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
if (!ether_addr_equal(hdr->addr1, dev->dev_addr)) {
PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=%pM"
" not own MAC\n", hdr->addr1);
goto done;
}
if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN)) {
if (!ether_addr_equal(hdr->addr3, dev->dev_addr)) {
PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=%pM"
" not own MAC\n", hdr->addr3);
goto done;
@ -3035,7 +3035,7 @@ ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
if (!wds) {
/* FromDS frame - not for us; probably
* broadcast/multicast in another BSS - drop */
if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
if (ether_addr_equal(hdr->addr1, dev->dev_addr)) {
printk(KERN_DEBUG "Odd.. FromDS packet "
"received with own BSSID\n");
hostap_dump_rx_80211(dev->name, skb, rx_stats);
@ -3044,7 +3044,7 @@ ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
goto out;
}
} else if (stype == IEEE80211_STYPE_NULLFUNC && sta == NULL &&
memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
ether_addr_equal(hdr->addr1, dev->dev_addr)) {
if (local->hostapd) {
prism2_rx_80211(local->apdev, skb, rx_stats,
@ -3073,7 +3073,7 @@ ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
/* If BSSID (Addr3) is foreign, this frame is a normal
* broadcast frame from an IBSS network. Drop it silently.
* If BSSID is own, report the dropping of this frame. */
if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
if (ether_addr_equal(hdr->addr3, dev->dev_addr)) {
printk(KERN_DEBUG "%s: dropped received packet from %pM"
" with no ToDS flag "
"(type=0x%02x, subtype=0x%02x)\n", dev->name,