[NET]: Undo code bloat in hot paths due to print_mac().
If print_mac() is used inside of a pr_debug() the compiler
can't see that the call is redundant so still performs it
even of pr_debug() ends up being a nop.
So don't use print_mac() in such cases in hot code paths,
use MAC_FMT et al. instead.
As noted by Joe Perches, pr_debug() could be modified to
handle this better, but that is a change to an interface
used by the entire kernel and thus needs to be validated
carefully. This here is thus the less risky fix for
2.6.25
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/hostap/hostap_ap.c b/drivers/net/wireless/hostap/hostap_ap.c
index ad040a3..0acd958 100644
--- a/drivers/net/wireless/hostap/hostap_ap.c
+++ b/drivers/net/wireless/hostap/hostap_ap.c
@@ -632,7 +632,6 @@
__le16 *pos;
struct sta_info *sta = NULL;
char *txt = NULL;
- DECLARE_MAC_BUF(mac);
if (ap->local->hostapd) {
dev_kfree_skb(skb);
@@ -684,10 +683,12 @@
if (sta)
atomic_dec(&sta->users);
if (txt) {
- PDEBUG(DEBUG_AP, "%s: %s auth_cb - alg=%d "
+ PDEBUG(DEBUG_AP, "%s: " MAC_FMT " auth_cb - alg=%d "
"trans#=%d status=%d - %s\n",
- dev->name, print_mac(mac, hdr->addr1), auth_alg,
- auth_transaction, status, txt);
+ dev->name,
+ hdr->addr1[0], hdr->addr1[1], hdr->addr1[2],
+ hdr->addr1[3], hdr->addr1[4], hdr->addr1[5],
+ auth_alg, auth_transaction, status, txt);
}
dev_kfree_skb(skb);
}
@@ -703,7 +704,6 @@
__le16 *pos;
struct sta_info *sta = NULL;
char *txt = NULL;
- DECLARE_MAC_BUF(mac);
if (ap->local->hostapd) {
dev_kfree_skb(skb);
@@ -754,8 +754,11 @@
if (sta)
atomic_dec(&sta->users);
if (txt) {
- PDEBUG(DEBUG_AP, "%s: %s assoc_cb - %s\n",
- dev->name, print_mac(mac, hdr->addr1), txt);
+ PDEBUG(DEBUG_AP, "%s: " MAC_FMT " assoc_cb - %s\n",
+ dev->name,
+ hdr->addr1[0], hdr->addr1[1], hdr->addr1[2],
+ hdr->addr1[3], hdr->addr1[4], hdr->addr1[5],
+ txt);
}
dev_kfree_skb(skb);
}
@@ -767,7 +770,6 @@
struct ap_data *ap = data;
struct ieee80211_hdr_4addr *hdr;
struct sta_info *sta;
- DECLARE_MAC_BUF(mac);
if (skb->len < 24)
goto fail;
@@ -779,9 +781,11 @@
sta->flags &= ~WLAN_STA_PENDING_POLL;
spin_unlock(&ap->sta_table_lock);
} else {
- PDEBUG(DEBUG_AP, "%s: STA %s"
+ PDEBUG(DEBUG_AP, "%s: STA " MAC_FMT
" did not ACK activity poll frame\n",
- ap->local->dev->name, print_mac(mac, hdr->addr1));
+ ap->local->dev->name,
+ hdr->addr1[0], hdr->addr1[1], hdr->addr1[2],
+ hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]);
}
fail:
@@ -1306,7 +1310,6 @@
struct sta_info *sta = NULL;
struct ieee80211_crypt_data *crypt;
char *txt = "";
- DECLARE_MAC_BUF(mac);
len = skb->len - IEEE80211_MGMT_HDR_LEN;
@@ -1315,8 +1318,9 @@
if (len < 6) {
PDEBUG(DEBUG_AP, "%s: handle_authen - too short payload "
- "(len=%d) from %s\n", dev->name, len,
- print_mac(mac, hdr->addr2));
+ "(len=%d) from " MAC_FMT "\n", dev->name, len,
+ hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+ hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
return;
}
@@ -1381,8 +1385,10 @@
if (time_after(jiffies, sta->u.ap.last_beacon +
(10 * sta->listen_interval * HZ) / 1024)) {
PDEBUG(DEBUG_AP, "%s: no beacons received for a while,"
- " assuming AP %s is now STA\n",
- dev->name, print_mac(mac, sta->addr));
+ " assuming AP " MAC_FMT " is now STA\n",
+ dev->name,
+ sta->addr[0], sta->addr[1], sta->addr[2],
+ sta->addr[3], sta->addr[4], sta->addr[5]);
sta->ap = 0;
sta->flags = 0;
sta->u.sta.challenge = NULL;
@@ -1497,10 +1503,13 @@
}
if (resp) {
- PDEBUG(DEBUG_AP, "%s: %s auth (alg=%d "
+ PDEBUG(DEBUG_AP, "%s: " MAC_FMT " auth (alg=%d "
"trans#=%d stat=%d len=%d fc=%04x) ==> %d (%s)\n",
- dev->name, print_mac(mac, hdr->addr2), auth_alg,
- auth_transaction, status_code, len, fc, resp, txt);
+ dev->name,
+ hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+ hdr->addr2[3], hdr->addr2[4], hdr->addr2[5],
+ auth_alg, auth_transaction, status_code, len,
+ fc, resp, txt);
}
}
@@ -1519,14 +1528,15 @@
int send_deauth = 0;
char *txt = "";
u8 prev_ap[ETH_ALEN];
- DECLARE_MAC_BUF(mac);
left = len = skb->len - IEEE80211_MGMT_HDR_LEN;
if (len < (reassoc ? 10 : 4)) {
PDEBUG(DEBUG_AP, "%s: handle_assoc - too short payload "
- "(len=%d, reassoc=%d) from %s\n",
- dev->name, len, reassoc, print_mac(mac, hdr->addr2));
+ "(len=%d, reassoc=%d) from " MAC_FMT "\n",
+ dev->name, len, reassoc,
+ hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+ hdr->addr2[3], hdr->addr2[4], hdr->addr2[5]);
return;
}
@@ -1603,9 +1613,12 @@
}
if (left > 0) {
- PDEBUG(DEBUG_AP, "%s: assoc from %s"
+ PDEBUG(DEBUG_AP, "%s: assoc from " MAC_FMT
" with extra data (%d bytes) [",
- dev->name, print_mac(mac, hdr->addr2), left);
+ dev->name,
+ hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+ hdr->addr2[3], hdr->addr2[4], hdr->addr2[5],
+ left);
while (left > 0) {
PDEBUG2(DEBUG_AP, "<%02x>", *u);
u++; left--;
@@ -1704,10 +1717,15 @@
}
#if 0
- PDEBUG(DEBUG_AP, "%s: %s %sassoc (len=%d "
- "prev_ap=%s) => %d(%d) (%s)\n",
- dev->name, print_mac(mac, hdr->addr2), reassoc ? "re" : "", len,
- print_mac(mac, prev_ap), resp, send_deauth, txt);
+ PDEBUG(DEBUG_AP, "%s: " MAC_FMT" %sassoc (len=%d "
+ "prev_ap=" MAC_FMT") => %d(%d) (%s)\n",
+ dev->name,
+ hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+ hdr->addr2[3], hdr->addr2[4], hdr->addr2[5],
+ reassoc ? "re" : "", len,
+ prev_ap[0], prev_ap[1], prev_ap[2],
+ prev_ap[3], prev_ap[4], prev_ap[5],
+ resp, send_deauth, txt);
#endif
}
@@ -1735,9 +1753,11 @@
pos = (__le16 *) body;
reason_code = le16_to_cpu(*pos);
- PDEBUG(DEBUG_AP, "%s: deauthentication: %s len=%d, "
- "reason_code=%d\n", dev->name, print_mac(mac, hdr->addr2), len,
- reason_code);
+ PDEBUG(DEBUG_AP, "%s: deauthentication: " MAC_FMT " len=%d, "
+ "reason_code=%d\n", dev->name,
+ hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+ hdr->addr2[3], hdr->addr2[4], hdr->addr2[5],
+ len, reason_code);
spin_lock_bh(&local->ap->sta_table_lock);
sta = ap_get_sta(local->ap, hdr->addr2);
@@ -1748,9 +1768,11 @@
}
spin_unlock_bh(&local->ap->sta_table_lock);
if (sta == NULL) {
- printk("%s: deauthentication from %s, "
+ printk("%s: deauthentication from " MAC_FMT ", "
"reason_code=%d, but STA not authenticated\n", dev->name,
- print_mac(mac, hdr->addr2), reason_code);
+ hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+ hdr->addr2[3], hdr->addr2[4], hdr->addr2[5],
+ reason_code);
}
}
@@ -1766,7 +1788,6 @@
u16 reason_code;
__le16 *pos;
struct sta_info *sta = NULL;
- DECLARE_MAC_BUF(mac);
len = skb->len - IEEE80211_MGMT_HDR_LEN;
@@ -1778,9 +1799,11 @@
pos = (__le16 *) body;
reason_code = le16_to_cpu(*pos);
- PDEBUG(DEBUG_AP, "%s: disassociation: %s len=%d, "
- "reason_code=%d\n", dev->name, print_mac(mac, hdr->addr2), len,
- reason_code);
+ PDEBUG(DEBUG_AP, "%s: disassociation: " MAC_FMT " len=%d, "
+ "reason_code=%d\n", dev->name,
+ hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+ hdr->addr2[3], hdr->addr2[4], hdr->addr2[5],
+ len, reason_code);
spin_lock_bh(&local->ap->sta_table_lock);
sta = ap_get_sta(local->ap, hdr->addr2);
@@ -1791,9 +1814,12 @@
}
spin_unlock_bh(&local->ap->sta_table_lock);
if (sta == NULL) {
- printk("%s: disassociation from %s, "
+ printk("%s: disassociation from " MAC_FMT ", "
"reason_code=%d, but STA not authenticated\n",
- dev->name, print_mac(mac, hdr->addr2), reason_code);
+ dev->name,
+ hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+ hdr->addr2[3], hdr->addr2[4], hdr->addr2[5],
+ reason_code);
}
}
@@ -1882,16 +1908,20 @@
struct sta_info *sta;
u16 aid;
struct sk_buff *skb;
- DECLARE_MAC_BUF(mac);
- PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=%s"
- ", TA=%s PWRMGT=%d\n",
- print_mac(mac, hdr->addr1), print_mac(mac, hdr->addr2),
+ PDEBUG(DEBUG_PS2, "handle_pspoll: BSSID=" MAC_FMT
+ ", TA=" MAC_FMT " PWRMGT=%d\n",
+ hdr->addr1[0], hdr->addr1[1], hdr->addr1[2],
+ hdr->addr1[3], hdr->addr1[4], hdr->addr1[5],
+ hdr->addr2[0], hdr->addr2[1], hdr->addr2[2],
+ hdr->addr2[3], hdr->addr2[4], hdr->addr2[5],
!!(le16_to_cpu(hdr->frame_ctl) & IEEE80211_FCTL_PM));
if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
- PDEBUG(DEBUG_AP, "handle_pspoll - addr1(BSSID)=%s"
- " not own MAC\n", print_mac(mac, hdr->addr1));
+ PDEBUG(DEBUG_AP, "handle_pspoll - addr1(BSSID)=" MAC_FMT
+ " not own MAC\n",
+ hdr->addr1[0], hdr->addr1[1], hdr->addr1[2],
+ hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]);
return;
}
@@ -1969,7 +1999,6 @@
wds_oper_queue);
local_info_t *local = ap->local;
struct wds_oper_data *entry, *prev;
- DECLARE_MAC_BUF(mac);
spin_lock_bh(&local->lock);
entry = local->ap->wds_oper_entries;
@@ -1978,10 +2007,11 @@
while (entry) {
PDEBUG(DEBUG_AP, "%s: %s automatic WDS connection "
- "to AP %s\n",
+ "to AP " MAC_FMT "\n",
local->dev->name,
entry->type == WDS_ADD ? "adding" : "removing",
- print_mac(mac, entry->addr));
+ entry->addr[0], entry->addr[1], entry->addr[2],
+ entry->addr[3], entry->addr[4], entry->addr[5]);
if (entry->type == WDS_ADD)
prism2_wds_add(local, entry->addr, 0);
else if (entry->type == WDS_DEL)
@@ -2158,7 +2188,6 @@
#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
u16 fc, type, stype;
struct ieee80211_hdr_4addr *hdr;
- DECLARE_MAC_BUF(mac);
/* FIX: should give skb->len to handler functions and check that the
* buffer is long enough */
@@ -2187,8 +2216,9 @@
if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
PDEBUG(DEBUG_AP, "handle_ap_item - addr1(BSSID)="
- "%s not own MAC\n",
- print_mac(mac, hdr->addr1));
+ MAC_FMT " not own MAC\n",
+ hdr->addr1[0], hdr->addr1[1], hdr->addr1[2],
+ hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]);
goto done;
}
@@ -2224,14 +2254,18 @@
}
if (memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN)) {
- PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=%s"
- " not own MAC\n", print_mac(mac, hdr->addr1));
+ PDEBUG(DEBUG_AP, "handle_ap_item - addr1(DA)=" MAC_FMT
+ " not own MAC\n",
+ hdr->addr1[0], hdr->addr1[1], hdr->addr1[2],
+ hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]);
goto done;
}
if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN)) {
- PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=%s"
- " not own MAC\n", print_mac(mac, hdr->addr3));
+ PDEBUG(DEBUG_AP, "handle_ap_item - addr3(BSSID)=" MAC_FMT
+ " not own MAC\n",
+ hdr->addr3[0], hdr->addr3[1], hdr->addr3[2],
+ hdr->addr3[3], hdr->addr3[4], hdr->addr3[5]);
goto done;
}
@@ -2312,7 +2346,6 @@
struct sk_buff *skb;
struct ieee80211_hdr_4addr *hdr;
struct hostap_80211_rx_status rx_stats;
- DECLARE_MAC_BUF(mac);
if (skb_queue_empty(&sta->tx_buf))
return;
@@ -2334,7 +2367,9 @@
hdr->duration_id = cpu_to_le16(sta->aid | BIT(15) | BIT(14));
PDEBUG(DEBUG_PS2, "%s: Scheduling buffered packet delivery for STA "
- "%s\n", local->dev->name, print_mac(mac, sta->addr));
+ MAC_FMT "\n", local->dev->name,
+ sta->addr[0], sta->addr[1], sta->addr[2],
+ sta->addr[3], sta->addr[4], sta->addr[5]);
skb->dev = local->dev;
@@ -2661,7 +2696,6 @@
int ret = sta->tx_rate;
struct hostap_interface *iface;
local_info_t *local;
- DECLARE_MAC_BUF(mac);
iface = netdev_priv(dev);
local = iface->local;
@@ -2689,9 +2723,12 @@
case 3: sta->tx_rate = 110; break;
default: sta->tx_rate = 0; break;
}
- PDEBUG(DEBUG_AP, "%s: STA %s"
+ PDEBUG(DEBUG_AP, "%s: STA " MAC_FMT
" TX rate raised to %d\n",
- dev->name, print_mac(mac, sta->addr), sta->tx_rate);
+ dev->name,
+ sta->addr[0], sta->addr[1], sta->addr[2],
+ sta->addr[3], sta->addr[4], sta->addr[5],
+ sta->tx_rate);
}
sta->tx_since_last_failure = 0;
}
@@ -2709,7 +2746,6 @@
int set_tim, ret;
struct ieee80211_hdr_4addr *hdr;
struct hostap_skb_tx_data *meta;
- DECLARE_MAC_BUF(mac);
meta = (struct hostap_skb_tx_data *) skb->cb;
ret = AP_TX_CONTINUE;
@@ -2745,8 +2781,9 @@
* print out any errors here. */
if (net_ratelimit()) {
printk(KERN_DEBUG "AP: drop packet to non-associated "
- "STA %s\n",
- print_mac(mac, hdr->addr1));
+ "STA " MAC_FMT "\n",
+ hdr->addr1[0], hdr->addr1[1], hdr->addr1[2],
+ hdr->addr1[3], hdr->addr1[4], hdr->addr1[5]);
}
#endif
local->ap->tx_drop_nonassoc++;
@@ -2784,9 +2821,11 @@
}
if (skb_queue_len(&sta->tx_buf) >= STA_MAX_TX_BUFFER) {
- PDEBUG(DEBUG_PS, "%s: No more space in STA (%s"
+ PDEBUG(DEBUG_PS, "%s: No more space in STA (" MAC_FMT
")'s PS mode buffer\n",
- local->dev->name, print_mac(mac, sta->addr));
+ local->dev->name,
+ sta->addr[0], sta->addr[1], sta->addr[2],
+ sta->addr[3], sta->addr[4], sta->addr[5]);
/* Make sure that TIM is set for the station (it might not be
* after AP wlan hw reset). */
/* FIX: should fix hw reset to restore bits based on STA
@@ -2850,7 +2889,6 @@
struct sta_info *sta;
struct ieee80211_hdr_4addr *hdr;
struct hostap_skb_tx_data *meta;
- DECLARE_MAC_BUF(mac);
hdr = (struct ieee80211_hdr_4addr *) skb->data;
meta = (struct hostap_skb_tx_data *) skb->cb;
@@ -2859,9 +2897,12 @@
sta = ap_get_sta(local->ap, hdr->addr1);
if (!sta) {
spin_unlock(&local->ap->sta_table_lock);
- PDEBUG(DEBUG_AP, "%s: Could not find STA %s"
+ PDEBUG(DEBUG_AP, "%s: Could not find STA " MAC_FMT
" for this TX error (@%lu)\n",
- local->dev->name, print_mac(mac, hdr->addr1), jiffies);
+ local->dev->name,
+ hdr->addr1[0], hdr->addr1[1], hdr->addr1[2],
+ hdr->addr1[3], hdr->addr1[4], hdr->addr1[5],
+ jiffies);
return;
}
@@ -2888,9 +2929,11 @@
case 3: sta->tx_rate = 110; break;
default: sta->tx_rate = 0; break;
}
- PDEBUG(DEBUG_AP, "%s: STA %s"
+ PDEBUG(DEBUG_AP, "%s: STA " MAC_FMT
" TX rate lowered to %d\n",
- local->dev->name, print_mac(mac, sta->addr),
+ local->dev->name,
+ sta->addr[0], sta->addr[1], sta->addr[2],
+ sta->addr[3], sta->addr[4], sta->addr[5],
sta->tx_rate);
}
sta->tx_consecutive_exc = 0;
@@ -2956,7 +2999,6 @@
struct sta_info *sta;
u16 fc, type, stype;
struct ieee80211_hdr_4addr *hdr;
- DECLARE_MAC_BUF(mac);
if (local->ap == NULL)
return AP_RX_CONTINUE;
@@ -2988,9 +3030,12 @@
} else {
printk(KERN_DEBUG "%s: dropped received packet"
" from non-associated STA "
- "%s"
+ MAC_FMT
" (type=0x%02x, subtype=0x%02x)\n",
- dev->name, print_mac(mac, hdr->addr2),
+ dev->name,
+ hdr->addr2[0], hdr->addr2[1],
+ hdr->addr2[2], hdr->addr2[3],
+ hdr->addr2[4], hdr->addr2[5],
type >> 2, stype >> 4);
hostap_rx(dev, skb, rx_stats);
#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
@@ -3025,8 +3070,11 @@
* being associated. */
printk(KERN_DEBUG "%s: rejected received nullfunc "
"frame without ToDS from not associated STA "
- "%s\n",
- dev->name, print_mac(mac, hdr->addr2));
+ MAC_FMT "\n",
+ dev->name,
+ hdr->addr2[0], hdr->addr2[1],
+ hdr->addr2[2], hdr->addr2[3],
+ hdr->addr2[4], hdr->addr2[5]);
hostap_rx(dev, skb, rx_stats);
#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
}
@@ -3043,9 +3091,12 @@
* If BSSID is own, report the dropping of this frame. */
if (memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
printk(KERN_DEBUG "%s: dropped received packet from "
- "%s with no ToDS flag "
+ MAC_FMT " with no ToDS flag "
"(type=0x%02x, subtype=0x%02x)\n", dev->name,
- print_mac(mac, hdr->addr2), type >> 2, stype >> 4);
+ hdr->addr2[0], hdr->addr2[1],
+ hdr->addr2[2], hdr->addr2[3],
+ hdr->addr2[4], hdr->addr2[5],
+ type >> 2, stype >> 4);
hostap_dump_rx_80211(dev->name, skb, rx_stats);
}
ret = AP_RX_DROP;