mac80211: use compare_ether_addr on MAC addresses instead of memcmp
Because of the constant size and guaranteed 16 bit alignment, the inline compare_ether_addr function is much cheaper than calling memcmp. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau
John W. Linville
Родитель
4d196e4b2f
Коммит
888d04dfbe
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@ -66,7 +66,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
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skb_reset_tail_pointer(skb);
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skb_reserve(skb, sdata->local->hw.extra_tx_headroom);
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if (memcmp(ifibss->bssid, bssid, ETH_ALEN))
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if (compare_ether_addr(ifibss->bssid, bssid))
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sta_info_flush(sdata->local, sdata);
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/* if merging, indicate to driver that we leave the old IBSS */
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@ -403,7 +403,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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return;
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if (sdata->vif.type == NL80211_IFTYPE_ADHOC &&
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memcmp(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0) {
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compare_ether_addr(mgmt->bssid, sdata->u.ibss.bssid) == 0) {
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rcu_read_lock();
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sta = sta_info_get(sdata, mgmt->sa);
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@ -508,7 +508,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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goto put_bss;
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/* same BSSID */
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if (memcmp(cbss->bssid, sdata->u.ibss.bssid, ETH_ALEN) == 0)
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if (compare_ether_addr(cbss->bssid, sdata->u.ibss.bssid) == 0)
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goto put_bss;
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if (rx_status->flag & RX_FLAG_MACTIME_MPDU) {
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@ -831,8 +831,8 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
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if (!tx_last_beacon && is_multicast_ether_addr(mgmt->da))
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return;
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if (memcmp(mgmt->bssid, ifibss->bssid, ETH_ALEN) != 0 &&
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memcmp(mgmt->bssid, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
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if (compare_ether_addr(mgmt->bssid, ifibss->bssid) != 0 &&
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!is_broadcast_ether_addr(mgmt->bssid))
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return;
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end = ((u8 *) mgmt) + len;
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@ -204,7 +204,7 @@ int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
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kmem_cache_free(rm_cache, p);
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--entries;
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} else if ((seqnum == p->seqnum) &&
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(memcmp(sa, p->sa, ETH_ALEN) == 0))
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(compare_ether_addr(sa, p->sa) == 0))
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return -1;
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}
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@ -8,6 +8,7 @@
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*/
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#include <linux/slab.h>
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#include <linux/etherdevice.h>
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#include <asm/unaligned.h>
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#include "wme.h"
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#include "mesh.h"
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@ -419,7 +420,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
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new_metric = MAX_METRIC;
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exp_time = TU_TO_EXP_TIME(orig_lifetime);
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if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0) {
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if (compare_ether_addr(orig_addr, sdata->vif.addr) == 0) {
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/* This MP is the originator, we are not interested in this
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* frame, except for updating transmitter's path info.
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*/
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@ -469,7 +470,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
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/* Update and check transmitter routing info */
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ta = mgmt->sa;
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if (memcmp(orig_addr, ta, ETH_ALEN) == 0)
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if (compare_ether_addr(orig_addr, ta) == 0)
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fresh_info = false;
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else {
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fresh_info = true;
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@ -530,7 +531,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
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mhwmp_dbg("received PREQ from %pM", orig_addr);
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if (memcmp(target_addr, sdata->vif.addr, ETH_ALEN) == 0) {
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if (compare_ether_addr(target_addr, sdata->vif.addr) == 0) {
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mhwmp_dbg("PREQ is for us");
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forward = false;
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reply = true;
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@ -627,7 +628,7 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
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mhwmp_dbg("received PREP from %pM", PREP_IE_ORIG_ADDR(prep_elem));
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orig_addr = PREP_IE_ORIG_ADDR(prep_elem);
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if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0)
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if (compare_ether_addr(orig_addr, sdata->vif.addr) == 0)
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/* destination, no forwarding required */
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return;
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@ -697,10 +698,12 @@ static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata,
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rcu_read_lock();
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mpath = mesh_path_lookup(target_addr, sdata);
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if (mpath) {
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struct sta_info *sta;
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spin_lock_bh(&mpath->state_lock);
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sta = next_hop_deref_protected(mpath);
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if (mpath->flags & MESH_PATH_ACTIVE &&
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memcmp(ta, next_hop_deref_protected(mpath)->sta.addr,
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ETH_ALEN) == 0 &&
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compare_ether_addr(ta, sta->sta.addr) == 0 &&
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(!(mpath->flags & MESH_PATH_SN_VALID) ||
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SN_GT(target_sn, mpath->sn))) {
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mpath->flags &= ~MESH_PATH_ACTIVE;
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@ -742,7 +745,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
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metric = rann->rann_metric;
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/* Ignore our own RANNs */
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if (memcmp(orig_addr, sdata->vif.addr, ETH_ALEN) == 0)
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if (compare_ether_addr(orig_addr, sdata->vif.addr) == 0)
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return;
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mhwmp_dbg("received RANN from %pM via neighbour %pM (is_gate=%d)",
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@ -1074,7 +1077,7 @@ int mesh_nexthop_lookup(struct sk_buff *skb,
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if (time_after(jiffies,
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mpath->exp_time -
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msecs_to_jiffies(sdata->u.mesh.mshcfg.path_refresh_time)) &&
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!memcmp(sdata->vif.addr, hdr->addr4, ETH_ALEN) &&
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!compare_ether_addr(sdata->vif.addr, hdr->addr4) &&
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!(mpath->flags & MESH_PATH_RESOLVING) &&
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!(mpath->flags & MESH_PATH_FIXED))
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mesh_queue_preq(mpath, PREQ_Q_F_START | PREQ_Q_F_REFRESH);
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@ -348,7 +348,7 @@ static struct mesh_path *mpath_lookup(struct mesh_table *tbl, u8 *dst,
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hlist_for_each_entry_rcu(node, n, bucket, list) {
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mpath = node->mpath;
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if (mpath->sdata == sdata &&
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memcmp(dst, mpath->dst, ETH_ALEN) == 0) {
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compare_ether_addr(dst, mpath->dst) == 0) {
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if (MPATH_EXPIRED(mpath)) {
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spin_lock_bh(&mpath->state_lock);
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mpath->flags &= ~MESH_PATH_ACTIVE;
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@ -523,7 +523,7 @@ int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata)
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int err = 0;
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u32 hash_idx;
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if (memcmp(dst, sdata->vif.addr, ETH_ALEN) == 0)
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if (compare_ether_addr(dst, sdata->vif.addr) == 0)
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/* never add ourselves as neighbours */
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return -ENOTSUPP;
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@ -564,7 +564,8 @@ int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata)
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err = -EEXIST;
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hlist_for_each_entry(node, n, bucket, list) {
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mpath = node->mpath;
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if (mpath->sdata == sdata && memcmp(dst, mpath->dst, ETH_ALEN) == 0)
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if (mpath->sdata == sdata &&
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compare_ether_addr(dst, mpath->dst) == 0)
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goto err_exists;
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}
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@ -655,7 +656,7 @@ int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata)
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int err = 0;
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u32 hash_idx;
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if (memcmp(dst, sdata->vif.addr, ETH_ALEN) == 0)
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if (compare_ether_addr(dst, sdata->vif.addr) == 0)
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/* never add ourselves as neighbours */
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return -ENOTSUPP;
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@ -692,7 +693,8 @@ int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata)
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err = -EEXIST;
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hlist_for_each_entry(node, n, bucket, list) {
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mpath = node->mpath;
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if (mpath->sdata == sdata && memcmp(dst, mpath->dst, ETH_ALEN) == 0)
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if (mpath->sdata == sdata &&
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compare_ether_addr(dst, mpath->dst) == 0)
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goto err_exists;
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}
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@ -886,7 +888,7 @@ int mesh_path_del(u8 *addr, struct ieee80211_sub_if_data *sdata)
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hlist_for_each_entry(node, n, bucket, list) {
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mpath = node->mpath;
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if (mpath->sdata == sdata &&
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memcmp(addr, mpath->dst, ETH_ALEN) == 0) {
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compare_ether_addr(addr, mpath->dst) == 0) {
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__mesh_path_del(tbl, node);
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goto enddel;
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}
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@ -1822,7 +1822,7 @@ ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
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memcpy(bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN);
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if (memcmp(bssid, mgmt->bssid, ETH_ALEN))
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if (compare_ether_addr(bssid, mgmt->bssid))
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return RX_MGMT_NONE;
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auth_alg = le16_to_cpu(mgmt->u.auth.auth_alg);
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@ -1903,7 +1903,7 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
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return RX_MGMT_NONE;
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if (!ifmgd->associated ||
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memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN))
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compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid))
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return RX_MGMT_NONE;
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bssid = ifmgd->associated->bssid;
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@ -1936,7 +1936,7 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
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return RX_MGMT_NONE;
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if (!ifmgd->associated ||
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memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN))
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compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid))
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return RX_MGMT_NONE;
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reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
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@ -2203,7 +2203,7 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
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if (!assoc_data)
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return RX_MGMT_NONE;
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if (memcmp(assoc_data->bss->bssid, mgmt->bssid, ETH_ALEN))
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if (compare_ether_addr(assoc_data->bss->bssid, mgmt->bssid))
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return RX_MGMT_NONE;
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/*
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@ -2291,8 +2291,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
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bool need_ps = false;
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if (sdata->u.mgd.associated &&
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memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid,
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ETH_ALEN) == 0) {
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compare_ether_addr(mgmt->bssid, sdata->u.mgd.associated->bssid)
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== 0) {
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bss = (void *)sdata->u.mgd.associated->priv;
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/* not previously set so we may need to recalc */
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need_ps = !bss->dtim_period;
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@ -2347,7 +2347,7 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
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ASSERT_MGD_MTX(ifmgd);
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if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN))
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if (compare_ether_addr(mgmt->da, sdata->vif.addr))
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return; /* ignore ProbeResp to foreign address */
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baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
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@ -2360,11 +2360,12 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
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ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false);
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if (ifmgd->associated &&
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memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0)
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compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid) == 0)
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ieee80211_reset_ap_probe(sdata);
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if (ifmgd->auth_data && !ifmgd->auth_data->bss->proberesp_ies &&
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memcmp(mgmt->bssid, ifmgd->auth_data->bss->bssid, ETH_ALEN) == 0) {
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compare_ether_addr(mgmt->bssid, ifmgd->auth_data->bss->bssid)
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== 0) {
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/* got probe response, continue with auth */
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printk(KERN_DEBUG "%s: direct probe responded\n", sdata->name);
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ifmgd->auth_data->tries = 0;
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@ -2421,7 +2422,8 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
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return;
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if (ifmgd->assoc_data && !ifmgd->assoc_data->have_beacon &&
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memcmp(mgmt->bssid, ifmgd->assoc_data->bss->bssid, ETH_ALEN) == 0) {
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compare_ether_addr(mgmt->bssid, ifmgd->assoc_data->bss->bssid)
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== 0) {
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ieee802_11_parse_elems(mgmt->u.beacon.variable,
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len - baselen, &elems);
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@ -2436,7 +2438,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
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}
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if (!ifmgd->associated ||
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memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN))
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compare_ether_addr(mgmt->bssid, ifmgd->associated->bssid))
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return;
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bssid = ifmgd->associated->bssid;
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@ -3299,7 +3301,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
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bool match;
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/* keep sta info, bssid if matching */
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match = memcmp(ifmgd->bssid, req->bss->bssid, ETH_ALEN) == 0;
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match = compare_ether_addr(ifmgd->bssid, req->bss->bssid) == 0;
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ieee80211_destroy_auth_data(sdata, match);
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}
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@ -3421,7 +3423,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
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goto err_clear;
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}
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} else
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WARN_ON_ONCE(memcmp(ifmgd->bssid, req->bss->bssid, ETH_ALEN));
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WARN_ON_ONCE(compare_ether_addr(ifmgd->bssid, req->bss->bssid));
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if (!bss->dtim_period &&
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sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) {
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@ -3471,7 +3473,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
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sdata->name, req->bssid, req->reason_code);
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if (ifmgd->associated &&
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memcmp(ifmgd->associated->bssid, req->bssid, ETH_ALEN) == 0)
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compare_ether_addr(ifmgd->associated->bssid, req->bssid) == 0)
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ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH,
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req->reason_code, true, frame_buf);
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else
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|
|
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@ -489,12 +489,12 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
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if (ieee80211_has_tods(hdr->frame_control) ||
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!ieee80211_has_fromds(hdr->frame_control))
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return RX_DROP_MONITOR;
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if (memcmp(hdr->addr3, dev_addr, ETH_ALEN) == 0)
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if (compare_ether_addr(hdr->addr3, dev_addr) == 0)
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return RX_DROP_MONITOR;
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} else {
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if (!ieee80211_has_a4(hdr->frame_control))
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return RX_DROP_MONITOR;
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if (memcmp(hdr->addr4, dev_addr, ETH_ALEN) == 0)
|
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if (compare_ether_addr(hdr->addr4, dev_addr) == 0)
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return RX_DROP_MONITOR;
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}
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}
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@ -2336,7 +2336,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
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if (sdata->vif.type != NL80211_IFTYPE_STATION)
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break;
|
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if (memcmp(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN))
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if (compare_ether_addr(mgmt->bssid, sdata->u.mgd.bssid))
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break;
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goto queue;
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|
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@ -13,6 +13,7 @@
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*/
|
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|
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#include <linux/if_arp.h>
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#include <linux/etherdevice.h>
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#include <linux/rtnetlink.h>
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#include <linux/pm_qos.h>
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#include <net/sch_generic.h>
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@ -176,7 +177,7 @@ ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
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presp = ieee80211_is_probe_resp(fc);
|
||||
if (presp) {
|
||||
/* ignore ProbeResp to foreign address */
|
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if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN))
|
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if (compare_ether_addr(mgmt->da, sdata->vif.addr))
|
||||
return RX_DROP_MONITOR;
|
||||
|
||||
presp = true;
|
||||
|
|
|
|||
|
|
@ -9,6 +9,7 @@
|
|||
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/etherdevice.h>
|
||||
#include <linux/netdevice.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/slab.h>
|
||||
|
|
@ -101,7 +102,7 @@ struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
|
|||
lockdep_is_held(&local->sta_mtx));
|
||||
while (sta) {
|
||||
if (sta->sdata == sdata &&
|
||||
memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
|
||||
compare_ether_addr(sta->sta.addr, addr) == 0)
|
||||
break;
|
||||
sta = rcu_dereference_check(sta->hnext,
|
||||
lockdep_is_held(&local->sta_mtx));
|
||||
|
|
@ -124,7 +125,7 @@ struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
|
|||
while (sta) {
|
||||
if ((sta->sdata == sdata ||
|
||||
(sta->sdata->bss && sta->sdata->bss == sdata->bss)) &&
|
||||
memcmp(sta->sta.addr, addr, ETH_ALEN) == 0)
|
||||
compare_ether_addr(sta->sta.addr, addr) == 0)
|
||||
break;
|
||||
sta = rcu_dereference_check(sta->hnext,
|
||||
lockdep_is_held(&local->sta_mtx));
|
||||
|
|
|
|||
|
|
@ -14,6 +14,7 @@
|
|||
#include <linux/if_ether.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/average.h>
|
||||
#include <linux/etherdevice.h>
|
||||
#include "key.h"
|
||||
|
||||
/**
|
||||
|
|
@ -489,7 +490,7 @@ void for_each_sta_info_type_check(struct ieee80211_local *local,
|
|||
nxt = _sta ? rcu_dereference(_sta->hnext) : NULL \
|
||||
) \
|
||||
/* compare address and run code only if it matches */ \
|
||||
if (memcmp(_sta->sta.addr, (_addr), ETH_ALEN) == 0)
|
||||
if (compare_ether_addr(_sta->sta.addr, (_addr)) == 0)
|
||||
|
||||
/*
|
||||
* Get STA info by index, BROKEN!
|
||||
|
|
|
|||
|
|
@ -10,6 +10,7 @@
|
|||
*/
|
||||
|
||||
#include <linux/export.h>
|
||||
#include <linux/etherdevice.h>
|
||||
#include <net/mac80211.h>
|
||||
#include <asm/unaligned.h>
|
||||
#include "ieee80211_i.h"
|
||||
|
|
@ -377,7 +378,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
|
|||
|
||||
for_each_sta_info(local, hdr->addr1, sta, tmp) {
|
||||
/* skip wrong virtual interface */
|
||||
if (memcmp(hdr->addr2, sta->sdata->vif.addr, ETH_ALEN))
|
||||
if (compare_ether_addr(hdr->addr2, sta->sdata->vif.addr))
|
||||
continue;
|
||||
|
||||
if (info->flags & IEEE80211_TX_STATUS_EOSP)
|
||||
|
|
|
|||
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Ссылка в новой задаче