[PATCH v2 1/2] mac80211: Change sk_pacing_shift saved to ieee80211_hw
From: Wen Gong <hidden>
Date: 2018-08-08 12:59:40
Subsystem:
mac80211, the rest · Maintainers:
Johannes Berg, Linus Torvalds
Add the skb_pacing_shift adjustment, this change make it configurable for other driver. If no other driver set it, then mac8011 will use the default value. Signed-off-by: Wen Gong <redacted> --- V2: -add the description for tx_sk_pacing_shift include/net/mac80211.h | 5 +++++ net/mac80211/main.c | 2 ++ net/mac80211/tx.c | 2 +- 3 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 5790f55..9804d65 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h@@ -2290,6 +2290,10 @@ enum ieee80211_hw_flags { * supported by HW. * @max_nan_de_entries: maximum number of NAN DE functions supported by the * device. + * + * @tx_sk_pacing_shift: The TCP stack allow more than a single ms of data + * to be queued in the stack. The value is a bit-shift of 1 second, e.g. 8 + * is ~4ms of queued data. It only affects local TCP sockets. */ struct ieee80211_hw { struct ieee80211_conf conf;
@@ -2325,6 +2329,7 @@ struct ieee80211_hw { u8 n_cipher_schemes; const struct ieee80211_cipher_scheme *cipher_schemes; u8 max_nan_de_entries; + u8 tx_sk_pacing_shift; }; static inline bool _ieee80211_hw_check(struct ieee80211_hw *hw,
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 4fb2709..23490fa 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c@@ -594,6 +594,8 @@ struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len, local->ops = ops; local->use_chanctx = use_chanctx; + local->hw.tx_sk_pacing_shift = 8; + /* set up some defaults */ local->hw.queues = 1; local->hw.max_rates = 1;
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 6a79d56..80855a8 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c@@ -3601,7 +3601,7 @@ void __ieee80211_subif_start_xmit(struct sk_buff *skb, * second, so 8 is ~4ms of queued data. Only affects local TCP * sockets. */ - sk_pacing_shift_update(skb->sk, 8); + sk_pacing_shift_update(skb->sk, sdata->local->hw.tx_sk_pacing_shift); fast_tx = rcu_dereference(sta->fast_tx);
--
1.9.1