diff options
| author | Heiner Kallweit <hkallweit1@gmail.com> | 2020-11-16 17:03:14 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-11-17 09:29:14 -0800 |
| commit | 83c317d7b36bb3858cf1cb86d2635ec3f3bd6ea3 (patch) | |
| tree | aa62fa0933f4edbe5ffafac0b129fbdcb62b2691 | |
| parent | b618c327024997589051ea3605b38d1f7ce138a7 (diff) | |
r8169: remove nr_frags argument from rtl_tx_slots_avail
The only time when nr_frags isn't SKB_MAX_FRAGS is when entering
rtl8169_start_xmit(). However we can use SKB_MAX_FRAGS also here
because when queue isn't stopped there should always be room for
MAX_SKB_FRAGS + 1 descriptors.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/3d1f2ad7-31d5-2cac-4f4a-394f8a3cab63@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/realtek/r8169_main.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 940fc6590566..04101a81322f 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -4141,14 +4141,13 @@ static bool rtl8169_tso_csum_v2(struct rtl8169_private *tp, return true; } -static bool rtl_tx_slots_avail(struct rtl8169_private *tp, - unsigned int nr_frags) +static bool rtl_tx_slots_avail(struct rtl8169_private *tp) { unsigned int slots_avail = READ_ONCE(tp->dirty_tx) + NUM_TX_DESC - READ_ONCE(tp->cur_tx); /* A skbuff with nr_frags needs nr_frags+1 entries in the tx queue */ - return slots_avail > nr_frags; + return slots_avail > MAX_SKB_FRAGS; } /* Versions RTL8102e and from RTL8168c onwards support csum_v2 */ @@ -4183,7 +4182,7 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, txd_first = tp->TxDescArray + entry; - if (unlikely(!rtl_tx_slots_avail(tp, frags))) { + if (unlikely(!rtl_tx_slots_avail(tp))) { if (net_ratelimit()) netdev_err(dev, "BUG! Tx Ring full when queue awake!\n"); goto err_stop_0; @@ -4228,7 +4227,7 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, WRITE_ONCE(tp->cur_tx, tp->cur_tx + frags + 1); - stop_queue = !rtl_tx_slots_avail(tp, MAX_SKB_FRAGS); + stop_queue = !rtl_tx_slots_avail(tp); if (unlikely(stop_queue)) { /* Avoid wrongly optimistic queue wake-up: rtl_tx thread must * not miss a ring update when it notices a stopped queue. @@ -4243,7 +4242,7 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, * can't. */ smp_mb__after_atomic(); - if (rtl_tx_slots_avail(tp, MAX_SKB_FRAGS)) + if (rtl_tx_slots_avail(tp)) netif_start_queue(dev); door_bell = true; } @@ -4394,10 +4393,8 @@ static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp, * ring status. */ smp_store_mb(tp->dirty_tx, dirty_tx); - if (netif_queue_stopped(dev) && - rtl_tx_slots_avail(tp, MAX_SKB_FRAGS)) { + if (netif_queue_stopped(dev) && rtl_tx_slots_avail(tp)) netif_wake_queue(dev); - } /* * 8168 hack: TxPoll requests are lost when the Tx packets are * too close. Let's kick an extra TxPoll request when a burst |