diff options
Diffstat (limited to 'net/mac80211/tx.c')
-rw-r--r-- | net/mac80211/tx.c | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index c558b24..6d59e21 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -19,6 +19,7 @@ #include <linux/bitmap.h> #include <linux/rcupdate.h> #include <linux/export.h> +#include <linux/time.h> #include <net/net_namespace.h> #include <net/ieee80211_radiotap.h> #include <net/cfg80211.h> @@ -557,7 +558,8 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx) if (unlikely(info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT)) tx->key = NULL; - else if (tx->sta && (key = rcu_dereference(tx->sta->ptk))) + else if (tx->sta && + (key = rcu_dereference(tx->sta->ptk[tx->sta->ptk_idx]))) tx->key = key; else if (ieee80211_is_mgmt(hdr->frame_control) && is_multicast_ether_addr(hdr->addr1) && @@ -840,15 +842,16 @@ static int ieee80211_fragment(struct ieee80211_tx_data *tx, rem -= fraglen; tmp = dev_alloc_skb(local->tx_headroom + frag_threshold + - IEEE80211_ENCRYPT_HEADROOM + + tx->sdata->encrypt_headroom + IEEE80211_ENCRYPT_TAILROOM); if (!tmp) return -ENOMEM; __skb_queue_tail(&tx->skbs, tmp); - skb_reserve(tmp, local->tx_headroom + - IEEE80211_ENCRYPT_HEADROOM); + skb_reserve(tmp, + local->tx_headroom + tx->sdata->encrypt_headroom); + /* copy control information */ memcpy(tmp->cb, skb->cb, sizeof(tmp->cb)); @@ -1485,7 +1488,7 @@ void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb, headroom = local->tx_headroom; if (may_encrypt) - headroom += IEEE80211_ENCRYPT_HEADROOM; + headroom += sdata->encrypt_headroom; headroom -= skb_headroom(skb); headroom = max_t(int, 0, headroom); @@ -1724,8 +1727,7 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, * radar detection by itself. We can do that later by adding a * monitor flag interfaces used for AP support. */ - if ((chan->flags & (IEEE80211_CHAN_NO_IBSS | IEEE80211_CHAN_RADAR | - IEEE80211_CHAN_PASSIVE_SCAN))) + if ((chan->flags & (IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_RADAR))) goto fail_rcu; ieee80211_xmit(sdata, skb, chan->band); @@ -1740,6 +1742,26 @@ fail: return NETDEV_TX_OK; /* meaning, we dealt with the skb */ } +/* + * Measure Tx frame arrival time for Tx latency statistics calculation + * A single Tx frame latency should be measured from when it is entering the + * Kernel until we receive Tx complete confirmation indication and the skb is + * freed. + */ +static void ieee80211_tx_latency_start_msrmnt(struct ieee80211_local *local, + struct sk_buff *skb) +{ + struct timespec skb_arv; + struct ieee80211_tx_latency_bin_ranges *tx_latency; + + tx_latency = rcu_dereference(local->tx_latency); + if (!tx_latency) + return; + + ktime_get_ts(&skb_arv); + skb->tstamp = ktime_set(skb_arv.tv_sec, skb_arv.tv_nsec); +} + /** * ieee80211_subif_start_xmit - netif start_xmit function for Ethernet-type * subinterfaces (wlan#, WDS, and VLAN interfaces) @@ -1790,6 +1812,9 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, rcu_read_lock(); + /* Measure frame arrival for Tx latency statistics calculation */ + ieee80211_tx_latency_start_msrmnt(local, skb); + switch (sdata->vif.type) { case NL80211_IFTYPE_AP_VLAN: sta = rcu_dereference(sdata->u.vlan.sta); @@ -2109,7 +2134,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, */ if (head_need > 0 || skb_cloned(skb)) { - head_need += IEEE80211_ENCRYPT_HEADROOM; + head_need += sdata->encrypt_headroom; head_need += local->tx_headroom; head_need = max_t(int, 0, head_need); if (ieee80211_skb_resize(sdata, skb, head_need, true)) { |