+++ /dev/null
-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);
-
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