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mac80211: remove TX_NEEDS_ALIGNED4_SKBS patch

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The intended performance benefit could not be reliably reproduced, and the
patch was not accepted upstream

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2019-08-19 19:14:17 +02:00
parent 164037983d
commit 032e08a011
4 changed files with 25 additions and 560 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

228
package/kernel/mac80211/patches/subsys/350-mac80211-add-hdrlen-to-ieee80211_tx_data.patch
View File

@ -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);

304
package/kernel/mac80211/patches/subsys/351-mac80211-add-TX_NEEDS_ALIGNED4_SKBS-hw-flag.patch
View File

@ -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
};

51
package/kernel/mac80211/patches/subsys/357-mac80211-optimize-skb-resizing.patch
View File

@ -24,7 +24,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1780,6 +1780,9 @@ int ieee80211_tx_control_port(struct wip
@@ -1779,6 +1779,9 @@ int ieee80211_tx_control_port(struct wip
const u8 *dest, __be16 proto, bool unencrypted);
int ieee80211_probe_mesh_link(struct wiphy *wiphy, struct net_device *dev,
const u8 *buf, size_t len);
@ -36,9 +36,9 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -669,6 +669,11 @@ void ieee80211_tx_monitor(struct ieee802
}
}
@@ -655,6 +655,11 @@ void ieee80211_tx_monitor(struct ieee802
struct net_device *prev_dev = NULL;
int rtap_len;
+ if (ieee80211_skb_resize(local, NULL, skb, 0, 0)) {
+ dev_kfree_skb(skb);
@ -50,7 +50,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
if (WARN_ON_ONCE(skb_headroom(skb) < rtap_len)) {
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1935,37 +1935,53 @@ static bool ieee80211_tx(struct ieee8021
@@ -1936,37 +1936,53 @@ static bool ieee80211_tx(struct ieee8021
}
/* device xmit handlers */
@ -67,20 +67,14 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
struct ieee80211_hdr *hdr;
- bool enc_tailroom;
- int tail_need = 0;
-
+ int head_need, head_max;
+ int tail_need, tail_max;
+ bool enc_tailroom = false;
- hdr = (struct ieee80211_hdr *) skb->data;
- enc_tailroom = may_encrypt &&
- (sdata->crypto_tx_tailroom_needed_cnt ||
- ieee80211_is_mgmt(hdr->frame_control));
-
- if (enc_tailroom) {
- tail_need = IEEE80211_ENCRYPT_TAILROOM;
- tail_need -= skb_tailroom(skb);
- tail_need = max_t(int, tail_need, 0);
+ int head_need, head_max;
+ int tail_need, tail_max;
+ bool enc_tailroom = false;
+
+ if (sdata && !hdr_len &&
+ !(info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT)) {
+ hdr = (struct ieee80211_hdr *) skb->data;
@ -88,7 +82,11 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+ ieee80211_is_mgmt(hdr->frame_control));
+ hdr_len += sdata->encrypt_headroom;
+ }
+
- if (enc_tailroom) {
- tail_need = IEEE80211_ENCRYPT_TAILROOM;
- tail_need -= skb_tailroom(skb);
- tail_need = max_t(int, tail_need, 0);
+ head_need = head_max = hdr_len;
+ tail_need = tail_max = 0;
+ if (!sdata) {
@ -123,7 +121,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
wiphy_debug(local->hw.wiphy,
"failed to reallocate TX buffer\n");
return -ENOMEM;
@@ -1981,18 +1997,8 @@ void ieee80211_xmit(struct ieee80211_sub
@@ -1982,18 +1998,8 @@ void ieee80211_xmit(struct ieee80211_sub
struct ieee80211_local *local = sdata->local;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr;
@ -131,26 +129,24 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
- bool may_encrypt;
-
- may_encrypt = !(info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT);
-
- headroom = local->tx_headroom;
- if (may_encrypt)
- headroom += sdata->encrypt_headroom;
- headroom -= skb_headroom(skb);
- headroom = max_t(int, 0, headroom);
-
- if (ieee80211_skb_resize(sdata, skb, headroom, may_encrypt)) {
+ if (ieee80211_skb_resize(local, sdata, skb, 0, 0)) {
ieee80211_free_txskb(&local->hw, skb);
return;
}
@@ -2774,30 +2780,14 @@ static struct sk_buff *ieee80211_build_h
@@ -2774,29 +2780,13 @@ 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 = hdrlen + encaps_len + meshhdrlen;
head_need += padsize;
-
- /*
- * So we need to modify the skb header and hence need a copy of
- * that. The head_need variable above doesn't, so far, include
@ -162,7 +158,8 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
- * the ever needed space. Also, if we need to reallocate it anyway,
- * make it big enough for everything we may ever need.
- */
-
+ head_need = hdrlen + encaps_len + meshhdrlen;
- if (head_need > 0 || skb_cloned(skb)) {
- head_need += sdata->encrypt_headroom;
- head_need += local->tx_headroom;
@ -180,7 +177,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
}
if (encaps_data)
@@ -3417,7 +3407,6 @@ static bool ieee80211_xmit_fast(struct i
@@ -3411,7 +3401,6 @@ static bool ieee80211_xmit_fast(struct i
struct ieee80211_local *local = sdata->local;
u16 ethertype = (skb->data[12] << 8) | skb->data[13];
int extra_head = fast_tx->hdr_len - (ETH_HLEN - 2);
@ -188,7 +185,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
struct ethhdr eth;
struct ieee80211_tx_info *info;
struct ieee80211_hdr *hdr = (void *)fast_tx->hdr;
@@ -3469,10 +3458,7 @@ static bool ieee80211_xmit_fast(struct i
@@ -3463,10 +3452,7 @@ static bool ieee80211_xmit_fast(struct i
* as the may-encrypt argument for the resize to not account for
* more room than we already have in 'extra_head'
*/

2
package/kernel/mac80211/patches/subsys/522-mac80211_configure_antenna_gain.patch
View File

@ -87,7 +87,7 @@
CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1373,6 +1373,7 @@ struct ieee80211_local {
@@ -1372,6 +1372,7 @@ struct ieee80211_local {
int dynamic_ps_forced_timeout;
int user_power_level; /* in dBm, for all interfaces */