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ethercat
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Fixed writing TX ring pointer.

This commit is contained in:
Florian Pose 2021-07-22 14:09:24 +02:00
parent 8ba04f4e26
commit 06609919f4
1 changed files with 7 additions and 1 deletions
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8
devices/e1000e/netdev-5.4-ethercat.c
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@ -6028,7 +6028,13 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
netdev_sent_queue(netdev, skb->len); netdev_sent_queue(netdev, skb->len);
e1000_tx_queue(tx_ring, tx_flags, count); e1000_tx_queue(tx_ring, tx_flags, count);
/* Make sure there is space in the ring for the next send. */ /* Make sure there is space in the ring for the next send. */
if (!adapter->ecdev) { if (adapter->ecdev) {
// Do not call e1000e_update_tdt_wa(), because it busy-waits.
// So the FLAG2_PCIM2PCI_ARBITER_WA is not active in EtherCAT.
// Instead, just set the ring pointer.
writel(tx_ring->next_to_use, tx_ring->tail);
}
else {
e1000_maybe_stop_tx(tx_ring, e1000_maybe_stop_tx(tx_ring,
(MAX_SKB_FRAGS * (MAX_SKB_FRAGS *
DIV_ROUND_UP(PAGE_SIZE, DIV_ROUND_UP(PAGE_SIZE,