diff options
| author | Heiner Kallweit <hkallweit1@gmail.com> | 2018-11-22 22:03:08 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-23 17:32:28 -0800 |
| commit | 76085c9e7eaebf0caa2476f77380efc3d55b050c (patch) | |
| tree | 45ee0bb46b120ee4b034fc2af4955c7b42c4926f | |
| parent | 5317d5c6d47eba1a4aa8316610c64329301f20a4 (diff) | |
r8169: replace macro TX_FRAGS_READY_FOR with a function
Replace macro TX_FRAGS_READY_FOR with function rtl_tx_slots_avail
to make code cleaner and type-safe.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/realtek/r8169.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index a7e97e365a2d..12811f18c134 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -56,13 +56,6 @@ #define R8169_MSG_DEFAULT \ (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN) -#define TX_SLOTS_AVAIL(tp) \ - (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx) - -/* A skbuff with nr_frags needs nr_frags+1 entries in the tx queue */ -#define TX_FRAGS_READY_FOR(tp,nr_frags) \ - (TX_SLOTS_AVAIL(tp) >= (nr_frags + 1)) - /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). The RTL chips use a 64 element hash table based on the Ethernet CRC. */ static const int multicast_filter_limit = 32; @@ -6058,6 +6051,15 @@ 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) +{ + unsigned int slots_avail = tp->dirty_tx + NUM_TX_DESC - tp->cur_tx; + + /* A skbuff with nr_frags needs nr_frags+1 entries in the tx queue */ + return slots_avail > nr_frags; +} + static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev) { @@ -6069,7 +6071,7 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, u32 opts[2], len; int frags; - if (unlikely(!TX_FRAGS_READY_FOR(tp, skb_shinfo(skb)->nr_frags))) { + if (unlikely(!rtl_tx_slots_avail(tp, skb_shinfo(skb)->nr_frags))) { netif_err(tp, drv, dev, "BUG! Tx Ring full when queue awake!\n"); goto err_stop_0; } @@ -6126,7 +6128,7 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, mmiowb(); - if (!TX_FRAGS_READY_FOR(tp, MAX_SKB_FRAGS)) { + if (!rtl_tx_slots_avail(tp, MAX_SKB_FRAGS)) { /* Avoid wrongly optimistic queue wake-up: rtl_tx thread must * not miss a ring update when it notices a stopped queue. */ @@ -6140,7 +6142,7 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, * can't. */ smp_mb(); - if (TX_FRAGS_READY_FOR(tp, MAX_SKB_FRAGS)) + if (rtl_tx_slots_avail(tp, MAX_SKB_FRAGS)) netif_wake_queue(dev); } @@ -6258,7 +6260,7 @@ static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp, */ smp_mb(); if (netif_queue_stopped(dev) && - TX_FRAGS_READY_FOR(tp, MAX_SKB_FRAGS)) { + rtl_tx_slots_avail(tp, MAX_SKB_FRAGS)) { netif_wake_queue(dev); } /* |