mac80211: remove TX_NEEDS_ALIGNED4_SKBS patch
The intended performance benefit could not be reliably reproduced, and the patch was not accepted upstream Signed-off-by: Felix Fietkau <nbd@nbd.name>master
Felix Fietkau
5 years ago
parent
164037983d
commit
032e08a011
@ -1,228 +0,0 @@
|
||||
From: Janusz Dziedzic <janusz.dziedzic@tieto.com>
|
||||
Date: Fri, 19 Feb 2016 11:01:49 +0100
|
||||
Subject: [PATCH] mac80211: add hdrlen to ieee80211_tx_data
|
||||
|
||||
This is preparation for adding support for inserting padding between the
|
||||
802.11 header and LLC data
|
||||
|
||||
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
|
||||
Signed-off-by: Felix Fietkau <nbd@nbd.name>
|
||||
---
|
||||
|
||||
--- a/net/mac80211/ieee80211_i.h
|
||||
+++ b/net/mac80211/ieee80211_i.h
|
||||
@@ -176,6 +176,7 @@ struct ieee80211_tx_data {
|
||||
struct ieee80211_tx_rate rate;
|
||||
|
||||
unsigned int flags;
|
||||
+ unsigned int hdrlen;
|
||||
};
|
||||
|
||||
|
||||
--- a/net/mac80211/tx.c
|
||||
+++ b/net/mac80211/tx.c
|
||||
@@ -921,7 +921,7 @@ ieee80211_tx_h_fragment(struct ieee80211
|
||||
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
|
||||
struct ieee80211_hdr *hdr = (void *)skb->data;
|
||||
int frag_threshold = tx->local->hw.wiphy->frag_threshold;
|
||||
- int hdrlen;
|
||||
+ int hdrlen = tx->hdrlen;
|
||||
int fragnum;
|
||||
|
||||
/* no matter what happens, tx->skb moves to tx->skbs */
|
||||
@@ -942,8 +942,6 @@ ieee80211_tx_h_fragment(struct ieee80211
|
||||
if (WARN_ON(info->flags & IEEE80211_TX_CTL_AMPDU))
|
||||
return TX_DROP;
|
||||
|
||||
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
-
|
||||
/* internal error, why isn't DONTFRAG set? */
|
||||
if (WARN_ON(skb->len + FCS_LEN <= frag_threshold))
|
||||
return TX_DROP;
|
||||
@@ -1174,6 +1172,8 @@ ieee80211_tx_prepare(struct ieee80211_su
|
||||
|
||||
hdr = (struct ieee80211_hdr *) skb->data;
|
||||
|
||||
+ tx->hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+
|
||||
if (likely(sta)) {
|
||||
if (!IS_ERR(sta))
|
||||
tx->sta = sta;
|
||||
@@ -3577,6 +3577,7 @@ begin:
|
||||
tx.local = local;
|
||||
tx.skb = skb;
|
||||
tx.sdata = vif_to_sdata(info->control.vif);
|
||||
+ tx.hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
|
||||
if (txq->sta)
|
||||
tx.sta = container_of(txq->sta, struct sta_info, sta);
|
||||
@@ -3603,7 +3604,7 @@ begin:
|
||||
|
||||
if (tx.key &&
|
||||
(tx.key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
|
||||
- pn_offs = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ pn_offs = tx.hdrlen;
|
||||
|
||||
ieee80211_xmit_fast_finish(sta->sdata, sta, pn_offs,
|
||||
tx.key, skb);
|
||||
@@ -4058,6 +4059,7 @@ ieee80211_build_data_template(struct iee
|
||||
hdr = (void *)skb->data;
|
||||
tx.sta = sta_info_get(sdata, hdr->addr1);
|
||||
tx.skb = skb;
|
||||
+ tx.hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
|
||||
if (ieee80211_tx_h_select_key(&tx) != TX_CONTINUE) {
|
||||
rcu_read_unlock();
|
||||
--- a/net/mac80211/util.c
|
||||
+++ b/net/mac80211/util.c
|
||||
@@ -1538,6 +1538,7 @@ void ieee80211_send_auth(struct ieee8021
|
||||
struct ieee80211_local *local = sdata->local;
|
||||
struct sk_buff *skb;
|
||||
struct ieee80211_mgmt *mgmt;
|
||||
+ unsigned int hdrlen;
|
||||
int err;
|
||||
|
||||
/* 24 + 6 = header + auth_algo + auth_transaction + status_code */
|
||||
@@ -1561,8 +1562,10 @@ void ieee80211_send_auth(struct ieee8021
|
||||
skb_put_data(skb, extra, extra_len);
|
||||
|
||||
if (auth_alg == WLAN_AUTH_SHARED_KEY && transaction == 3) {
|
||||
+ hdrlen = ieee80211_hdrlen(mgmt->frame_control);
|
||||
mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
|
||||
- err = ieee80211_wep_encrypt(local, skb, key, key_len, key_idx);
|
||||
+ err = ieee80211_wep_encrypt(local, skb, hdrlen, key,
|
||||
+ key_len, key_idx);
|
||||
WARN_ON(err);
|
||||
}
|
||||
|
||||
--- a/net/mac80211/wep.c
|
||||
+++ b/net/mac80211/wep.c
|
||||
@@ -65,11 +65,11 @@ static void ieee80211_wep_get_iv(struct
|
||||
|
||||
static u8 *ieee80211_wep_add_iv(struct ieee80211_local *local,
|
||||
struct sk_buff *skb,
|
||||
+ unsigned int hdrlen,
|
||||
int keylen, int keyidx)
|
||||
{
|
||||
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
||||
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
|
||||
- unsigned int hdrlen;
|
||||
u8 *newhdr;
|
||||
|
||||
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
|
||||
@@ -77,7 +77,6 @@ static u8 *ieee80211_wep_add_iv(struct i
|
||||
if (WARN_ON(skb_headroom(skb) < IEEE80211_WEP_IV_LEN))
|
||||
return NULL;
|
||||
|
||||
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
newhdr = skb_push(skb, IEEE80211_WEP_IV_LEN);
|
||||
memmove(newhdr, newhdr + IEEE80211_WEP_IV_LEN, hdrlen);
|
||||
|
||||
@@ -132,6 +131,7 @@ int ieee80211_wep_encrypt_data(struct ar
|
||||
*/
|
||||
int ieee80211_wep_encrypt(struct ieee80211_local *local,
|
||||
struct sk_buff *skb,
|
||||
+ unsigned int hdrlen,
|
||||
const u8 *key, int keylen, int keyidx)
|
||||
{
|
||||
u8 *iv;
|
||||
@@ -141,7 +141,7 @@ int ieee80211_wep_encrypt(struct ieee802
|
||||
if (WARN_ON(skb_tailroom(skb) < IEEE80211_WEP_ICV_LEN))
|
||||
return -1;
|
||||
|
||||
- iv = ieee80211_wep_add_iv(local, skb, keylen, keyidx);
|
||||
+ iv = ieee80211_wep_add_iv(local, skb, hdrlen, keylen, keyidx);
|
||||
if (!iv)
|
||||
return -1;
|
||||
|
||||
@@ -275,13 +275,14 @@ static int wep_encrypt_skb(struct ieee80
|
||||
struct ieee80211_key_conf *hw_key = info->control.hw_key;
|
||||
|
||||
if (!hw_key) {
|
||||
- if (ieee80211_wep_encrypt(tx->local, skb, tx->key->conf.key,
|
||||
+ if (ieee80211_wep_encrypt(tx->local, skb, tx->hdrlen,
|
||||
+ tx->key->conf.key,
|
||||
tx->key->conf.keylen,
|
||||
tx->key->conf.keyidx))
|
||||
return -1;
|
||||
} else if ((hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV) ||
|
||||
(hw_key->flags & IEEE80211_KEY_FLAG_PUT_IV_SPACE)) {
|
||||
- if (!ieee80211_wep_add_iv(tx->local, skb,
|
||||
+ if (!ieee80211_wep_add_iv(tx->local, skb, tx->hdrlen,
|
||||
tx->key->conf.keylen,
|
||||
tx->key->conf.keyidx))
|
||||
return -1;
|
||||
--- a/net/mac80211/wep.h
|
||||
+++ b/net/mac80211/wep.h
|
||||
@@ -18,6 +18,7 @@ int ieee80211_wep_encrypt_data(struct ar
|
||||
size_t klen, u8 *data, size_t data_len);
|
||||
int ieee80211_wep_encrypt(struct ieee80211_local *local,
|
||||
struct sk_buff *skb,
|
||||
+ unsigned int hdrlen,
|
||||
const u8 *key, int keylen, int keyidx);
|
||||
int ieee80211_wep_decrypt_data(struct arc4_ctx *ctx, u8 *rc4key,
|
||||
size_t klen, u8 *data, size_t data_len);
|
||||
--- a/net/mac80211/wpa.c
|
||||
+++ b/net/mac80211/wpa.c
|
||||
@@ -41,7 +41,7 @@ ieee80211_tx_h_michael_mic_add(struct ie
|
||||
skb->len < 24 || !ieee80211_is_data_present(hdr->frame_control))
|
||||
return TX_CONTINUE;
|
||||
|
||||
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ hdrlen = tx->hdrlen;
|
||||
if (skb->len < hdrlen)
|
||||
return TX_DROP;
|
||||
|
||||
@@ -192,7 +192,6 @@ mic_fail_no_key:
|
||||
|
||||
static int tkip_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
|
||||
{
|
||||
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
|
||||
struct ieee80211_key *key = tx->key;
|
||||
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
|
||||
unsigned int hdrlen;
|
||||
@@ -207,7 +206,7 @@ static int tkip_encrypt_skb(struct ieee8
|
||||
return 0;
|
||||
}
|
||||
|
||||
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ hdrlen = tx->hdrlen;
|
||||
len = skb->len - hdrlen;
|
||||
|
||||
if (info->control.hw_key)
|
||||
@@ -425,7 +424,7 @@ static int ccmp_encrypt_skb(struct ieee8
|
||||
return 0;
|
||||
}
|
||||
|
||||
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ hdrlen = tx->hdrlen;
|
||||
len = skb->len - hdrlen;
|
||||
|
||||
if (info->control.hw_key)
|
||||
@@ -657,7 +656,7 @@ static int gcmp_encrypt_skb(struct ieee8
|
||||
return 0;
|
||||
}
|
||||
|
||||
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ hdrlen = tx->hdrlen;
|
||||
len = skb->len - hdrlen;
|
||||
|
||||
if (info->control.hw_key)
|
||||
@@ -797,7 +796,6 @@ static ieee80211_tx_result
|
||||
ieee80211_crypto_cs_encrypt(struct ieee80211_tx_data *tx,
|
||||
struct sk_buff *skb)
|
||||
{
|
||||
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
||||
struct ieee80211_key *key = tx->key;
|
||||
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
|
||||
int hdrlen;
|
||||
@@ -813,8 +811,7 @@ ieee80211_crypto_cs_encrypt(struct ieee8
|
||||
pskb_expand_head(skb, iv_len, 0, GFP_ATOMIC)))
|
||||
return TX_DROP;
|
||||
|
||||
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
-
|
||||
+ hdrlen = tx->hdrlen;
|
||||
pos = skb_push(skb, iv_len);
|
||||
memmove(pos, pos + iv_len, hdrlen);
|
||||
|
||||
@ -1,304 +0,0 @@
|
||||
From: Janusz Dziedzic <janusz.dziedzic@tieto.com>
|
||||
Date: Sun, 10 Mar 2019 17:22:08 +0100
|
||||
Subject: [PATCH] mac80211: add TX_NEEDS_ALIGNED4_SKBS hw flag
|
||||
|
||||
The driver should set this flag if the hardware requires tx skb data
|
||||
(starting with the LLC header) to be aligned to 4 bytes.
|
||||
|
||||
Padding is added after ieee80211_hdr, before IV/LLC.
|
||||
|
||||
Before this patch, we have to do memmove(hdrlen) twice in the driver:
|
||||
Once before we pass this to HW and once again in tx completion
|
||||
(to fix up the skb for monitor mode).
|
||||
|
||||
With this patch we can skip this memmove() and thus reduce CPU cycles in
|
||||
the data path.
|
||||
|
||||
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
|
||||
Signed-off-by: Felix Fietkau <nbd@nbd.name>
|
||||
---
|
||||
|
||||
--- a/include/net/mac80211.h
|
||||
+++ b/include/net/mac80211.h
|
||||
@@ -2274,6 +2274,9 @@ struct ieee80211_txq {
|
||||
* @IEEE80211_HW_NO_AMPDU_KEYBORDER_SUPPORT: The card/driver can't handle
|
||||
* active Tx A-MPDU sessions with Extended Key IDs during rekey.
|
||||
*
|
||||
+ * @IEEE80211_HW_TX_NEEDS_ALIGNED4_SKBS: Driver need aligned skbs to four-byte.
|
||||
+ * Padding will be added after ieee80211_hdr, before IV/LLC.
|
||||
+ *
|
||||
* @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
|
||||
*/
|
||||
enum ieee80211_hw_flags {
|
||||
@@ -2327,6 +2330,7 @@ enum ieee80211_hw_flags {
|
||||
IEEE80211_HW_SUPPORTS_ONLY_HE_MULTI_BSSID,
|
||||
IEEE80211_HW_EXT_KEY_ID_NATIVE,
|
||||
IEEE80211_HW_NO_AMPDU_KEYBORDER_SUPPORT,
|
||||
+ IEEE80211_HW_TX_NEEDS_ALIGNED4_SKBS,
|
||||
|
||||
/* keep last, obviously */
|
||||
NUM_IEEE80211_HW_FLAGS
|
||||
@@ -2620,6 +2624,40 @@ ieee80211_get_alt_retry_rate(const struc
|
||||
void ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb);
|
||||
|
||||
/**
|
||||
+ * ieee80211_hdr_padsize - get size of padding between 802.11 header and LLC
|
||||
+ * @hw: the hardware
|
||||
+ * @hdrlen: 802.11 header length
|
||||
+ */
|
||||
+static inline unsigned int
|
||||
+ieee80211_hdr_padsize(struct ieee80211_hw *hw, unsigned int hdrlen)
|
||||
+{
|
||||
+ /*
|
||||
+ * While hdrlen is already aligned to two-byte boundaries,
|
||||
+ * simple check with & 2 will return correct padsize.
|
||||
+ */
|
||||
+ if (ieee80211_hw_check(hw, TX_NEEDS_ALIGNED4_SKBS))
|
||||
+ return hdrlen & 2;
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+/**
|
||||
+ * ieee80211_padded_hdrlen - get padded 802.11 header size
|
||||
+ * @hw: the hardware
|
||||
+ * @fc: frame control field in little-endian format
|
||||
+ */
|
||||
+static inline unsigned int
|
||||
+ieee80211_padded_hdrlen(struct ieee80211_hw *hw, __le16 fc)
|
||||
+{
|
||||
+ unsigned int hdrlen;
|
||||
+
|
||||
+ hdrlen = ieee80211_hdrlen(fc);
|
||||
+ hdrlen += ieee80211_hdr_padsize(hw, hdrlen);
|
||||
+
|
||||
+ return hdrlen;
|
||||
+}
|
||||
+
|
||||
+
|
||||
+/**
|
||||
* DOC: Hardware crypto acceleration
|
||||
*
|
||||
* mac80211 is capable of taking advantage of many hardware
|
||||
--- a/net/mac80211/iface.c
|
||||
+++ b/net/mac80211/iface.c
|
||||
@@ -1876,6 +1876,10 @@ int ieee80211_if_add(struct ieee80211_lo
|
||||
+ 8 /* rfc1042/bridge tunnel */
|
||||
- ETH_HLEN /* ethernet hard_header_len */
|
||||
+ IEEE80211_ENCRYPT_HEADROOM;
|
||||
+
|
||||
+ if (ieee80211_hw_check(&local->hw, TX_NEEDS_ALIGNED4_SKBS))
|
||||
+ ndev->needed_headroom += 2; /* padding */
|
||||
+
|
||||
ndev->needed_tailroom = IEEE80211_ENCRYPT_TAILROOM;
|
||||
|
||||
ret = dev_alloc_name(ndev, ndev->name);
|
||||
--- a/net/mac80211/mesh_pathtbl.c
|
||||
+++ b/net/mac80211/mesh_pathtbl.c
|
||||
@@ -102,13 +102,15 @@ void mesh_path_assign_nexthop(struct mes
|
||||
static void prepare_for_gate(struct sk_buff *skb, char *dst_addr,
|
||||
struct mesh_path *gate_mpath)
|
||||
{
|
||||
+ struct ieee80211_sub_if_data *sdata = gate_mpath->sdata;
|
||||
+ struct ieee80211_hw *hw = &sdata->local->hw;
|
||||
struct ieee80211_hdr *hdr;
|
||||
struct ieee80211s_hdr *mshdr;
|
||||
int mesh_hdrlen, hdrlen;
|
||||
char *next_hop;
|
||||
|
||||
hdr = (struct ieee80211_hdr *) skb->data;
|
||||
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ hdrlen = ieee80211_padded_hdrlen(hw, hdr->frame_control);
|
||||
mshdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
|
||||
|
||||
if (!(mshdr->flags & MESH_FLAGS_AE)) {
|
||||
--- a/net/mac80211/rx.c
|
||||
+++ b/net/mac80211/rx.c
|
||||
@@ -2673,7 +2673,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80
|
||||
struct ieee80211_local *local = rx->local;
|
||||
struct ieee80211_sub_if_data *sdata = rx->sdata;
|
||||
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
||||
- u16 ac, q, hdrlen;
|
||||
+ u16 ac, q, hdrlen, padsize;
|
||||
int tailroom = 0;
|
||||
|
||||
hdr = (struct ieee80211_hdr *) skb->data;
|
||||
@@ -2766,7 +2766,9 @@ ieee80211_rx_h_mesh_fwding(struct ieee80
|
||||
if (sdata->crypto_tx_tailroom_needed_cnt)
|
||||
tailroom = IEEE80211_ENCRYPT_TAILROOM;
|
||||
|
||||
- fwd_skb = skb_copy_expand(skb, local->tx_headroom +
|
||||
+ padsize = ieee80211_hdr_padsize(&local->hw, hdrlen);
|
||||
+
|
||||
+ fwd_skb = skb_copy_expand(skb, local->tx_headroom + padsize +
|
||||
sdata->encrypt_headroom,
|
||||
tailroom, GFP_ATOMIC);
|
||||
if (!fwd_skb)
|
||||
@@ -2798,6 +2800,12 @@ ieee80211_rx_h_mesh_fwding(struct ieee80
|
||||
return RX_DROP_MONITOR;
|
||||
}
|
||||
|
||||
+ if (padsize) {
|
||||
+ skb_push(fwd_skb, padsize);
|
||||
+ memmove(fwd_skb->data, skb->data + padsize, hdrlen);
|
||||
+ memset(fwd_skb->data + hdrlen, 0, padsize);
|
||||
+ }
|
||||
+
|
||||
IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, fwded_frames);
|
||||
ieee80211_add_pending_skb(local, fwd_skb);
|
||||
out:
|
||||
--- a/net/mac80211/sta_info.h
|
||||
+++ b/net/mac80211/sta_info.h
|
||||
@@ -308,7 +308,7 @@ struct ieee80211_fast_tx {
|
||||
u8 hdr_len;
|
||||
u8 sa_offs, da_offs, pn_offs;
|
||||
u8 band;
|
||||
- u8 hdr[30 + 2 + IEEE80211_FAST_XMIT_MAX_IV +
|
||||
+ u8 hdr[30 + 2 + 2 + IEEE80211_FAST_XMIT_MAX_IV +
|
||||
sizeof(rfc1042_header)] __aligned(2);
|
||||
|
||||
struct rcu_head rcu_head;
|
||||
--- a/net/mac80211/status.c
|
||||
+++ b/net/mac80211/status.c
|
||||
@@ -512,6 +512,7 @@ static void ieee80211_report_used_skb(st
|
||||
{
|
||||
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
|
||||
struct ieee80211_hdr *hdr = (void *)skb->data;
|
||||
+ struct ieee80211_hw *hw = &local->hw;
|
||||
bool acked = info->flags & IEEE80211_TX_STAT_ACK;
|
||||
|
||||
if (dropped)
|
||||
@@ -528,7 +529,7 @@ static void ieee80211_report_used_skb(st
|
||||
skb->dev = NULL;
|
||||
} else {
|
||||
unsigned int hdr_size =
|
||||
- ieee80211_hdrlen(hdr->frame_control);
|
||||
+ ieee80211_padded_hdrlen(hw, hdr->frame_control);
|
||||
|
||||
/* Check to see if packet is a TDLS teardown packet */
|
||||
if (ieee80211_is_data(hdr->frame_control) &&
|
||||
@@ -652,9 +653,22 @@ void ieee80211_tx_monitor(struct ieee802
|
||||
struct sk_buff *skb2;
|
||||
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
|
||||
struct ieee80211_sub_if_data *sdata;
|
||||
+ struct ieee80211_hdr *hdr = (void *)skb->data;
|
||||
struct net_device *prev_dev = NULL;
|
||||
+ unsigned int hdrlen, padsize;
|
||||
int rtap_len;
|
||||
|
||||
+ /* Remove padding if was added */
|
||||
+ if (ieee80211_hw_check(&local->hw, TX_NEEDS_ALIGNED4_SKBS)) {
|
||||
+ hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ padsize = ieee80211_hdr_padsize(&local->hw, hdrlen);
|
||||
+
|
||||
+ if (padsize && skb->len > hdrlen + padsize) {
|
||||
+ memmove(skb->data + padsize, skb->data, hdrlen);
|
||||
+ skb_pull(skb, padsize);
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
/* send frame to monitor interfaces now */
|
||||
rtap_len = ieee80211_tx_radiotap_len(info);
|
||||
if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) {
|
||||
--- a/net/mac80211/tkip.c
|
||||
+++ b/net/mac80211/tkip.c
|
||||
@@ -198,10 +198,12 @@ void ieee80211_get_tkip_p2k(struct ieee8
|
||||
{
|
||||
struct ieee80211_key *key = (struct ieee80211_key *)
|
||||
container_of(keyconf, struct ieee80211_key, conf);
|
||||
+ struct ieee80211_hw *hw = &key->local->hw;
|
||||
const u8 *tk = &key->conf.key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY];
|
||||
struct tkip_ctx *ctx = &key->u.tkip.tx;
|
||||
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
||||
- const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);
|
||||
+ const u8 *data = (u8 *)hdr + ieee80211_padded_hdrlen(hw,
|
||||
+ hdr->frame_control);
|
||||
u32 iv32 = get_unaligned_le32(&data[4]);
|
||||
u16 iv16 = data[2] | (data[0] << 8);
|
||||
|
||||
--- a/net/mac80211/tx.c
|
||||
+++ b/net/mac80211/tx.c
|
||||
@@ -1171,8 +1171,7 @@ ieee80211_tx_prepare(struct ieee80211_su
|
||||
info->flags &= ~IEEE80211_TX_INTFL_NEED_TXPROCESSING;
|
||||
|
||||
hdr = (struct ieee80211_hdr *) skb->data;
|
||||
-
|
||||
- tx->hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ tx->hdrlen = ieee80211_padded_hdrlen(&local->hw, hdr->frame_control);
|
||||
|
||||
if (likely(sta)) {
|
||||
if (!IS_ERR(sta))
|
||||
@@ -2244,7 +2243,7 @@ netdev_tx_t ieee80211_monitor_start_xmit
|
||||
goto fail;
|
||||
|
||||
hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr);
|
||||
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ hdrlen = ieee80211_padded_hdrlen(&local->hw, hdr->frame_control);
|
||||
|
||||
if (skb->len < len_rthdr + hdrlen)
|
||||
goto fail;
|
||||
@@ -2463,7 +2462,7 @@ static struct sk_buff *ieee80211_build_h
|
||||
struct ieee80211_chanctx_conf *chanctx_conf;
|
||||
struct ieee80211_sub_if_data *ap_sdata;
|
||||
enum nl80211_band band;
|
||||
- int ret;
|
||||
+ int padsize, ret;
|
||||
|
||||
if (IS_ERR(sta))
|
||||
sta = NULL;
|
||||
@@ -2774,7 +2773,9 @@ static struct sk_buff *ieee80211_build_h
|
||||
}
|
||||
|
||||
skb_pull(skb, skip_header_bytes);
|
||||
+ padsize = ieee80211_hdr_padsize(&local->hw, hdrlen);
|
||||
head_need = hdrlen + encaps_len + meshhdrlen - skb_headroom(skb);
|
||||
+ head_need += padsize;
|
||||
|
||||
/*
|
||||
* So we need to modify the skb header and hence need a copy of
|
||||
@@ -2807,6 +2808,9 @@ static struct sk_buff *ieee80211_build_h
|
||||
memcpy(skb_push(skb, meshhdrlen), &mesh_hdr, meshhdrlen);
|
||||
#endif
|
||||
|
||||
+ if (padsize)
|
||||
+ memset(skb_push(skb, padsize), 0, padsize);
|
||||
+
|
||||
if (ieee80211_is_data_qos(fc)) {
|
||||
__le16 *qos_control;
|
||||
|
||||
@@ -2983,6 +2987,8 @@ void ieee80211_check_fast_xmit(struct st
|
||||
fc |= cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
|
||||
}
|
||||
|
||||
+ build.hdr_len += ieee80211_hdr_padsize(&local->hw, build.hdr_len);
|
||||
+
|
||||
/* We store the key here so there's no point in using rcu_dereference()
|
||||
* but that's fine because the code that changes the pointers will call
|
||||
* this function after doing so. For a single CPU that would be enough,
|
||||
@@ -3577,7 +3583,7 @@ begin:
|
||||
tx.local = local;
|
||||
tx.skb = skb;
|
||||
tx.sdata = vif_to_sdata(info->control.vif);
|
||||
- tx.hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ tx.hdrlen = ieee80211_padded_hdrlen(hw, hdr->frame_control);
|
||||
|
||||
if (txq->sta)
|
||||
tx.sta = container_of(txq->sta, struct sta_info, sta);
|
||||
@@ -4059,7 +4065,7 @@ ieee80211_build_data_template(struct iee
|
||||
hdr = (void *)skb->data;
|
||||
tx.sta = sta_info_get(sdata, hdr->addr1);
|
||||
tx.skb = skb;
|
||||
- tx.hdrlen = ieee80211_hdrlen(hdr->frame_control);
|
||||
+ tx.hdrlen = ieee80211_padded_hdrlen(&tx.local->hw, hdr->frame_control);
|
||||
|
||||
if (ieee80211_tx_h_select_key(&tx) != TX_CONTINUE) {
|
||||
rcu_read_unlock();
|
||||
--- a/net/mac80211/debugfs.c
|
||||
+++ b/net/mac80211/debugfs.c
|
||||
@@ -273,6 +273,7 @@ static const char *hw_flag_names[] = {
|
||||
FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
|
||||
FLAG(EXT_KEY_ID_NATIVE),
|
||||
FLAG(NO_AMPDU_KEYBORDER_SUPPORT),
|
||||
+ FLAG(TX_NEEDS_ALIGNED4_SKBS),
|
||||
#undef FLAG
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue