Commit 46589db3 authored by Gerhard Engleder's avatar Gerhard Engleder Committed by David S. Miller
Browse files

tsnep: Fix NAPI polling with budget 0 



According to the NAPI documentation networking/napi.rst, Rx specific
APIs like page pool and XDP cannot be used at all when budget is 0.
skb Tx processing should happen regardless of the budget.

Stop NAPI polling after Tx processing and skip Rx processing if budget
is 0.

Signed-off-by: default avatarGerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a7f99195

drivers/net/ethernet/engleder/tsnep_main.c

+4 −0
Original line number Diff line number Diff line
@@ -1734,6 +1734,10 @@ static int tsnep_poll(struct napi_struct *napi, int budget) 
	if (queue->tx)

		complete = tsnep_tx_poll(queue->tx, budget);



	/* handle case where we are called by netpoll with a budget of 0 */

	if (unlikely(budget <= 0))

		return budget;



	if (queue->rx) {

		done = queue->rx->xsk_pool ?

		       tsnep_rx_poll_zc(queue->rx, napi, budget) :