disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
..
..
@@ -137,20 +137,22 @@
137
137
 	for (i = 0; i < c->num_tc; i++)
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 		busy |= mlx5e_poll_tx_cq(&c->sq[i].cq, budget);
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139
 
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+	/* budget=0 means we may be in IRQ context, do as little as possible */
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+	if (unlikely(!budget))
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+		goto out;
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+
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 	busy |= mlx5e_poll_xdpsq_cq(&c->xdpsq.cq);
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145
 
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 	if (c->xdp)
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 		busy |= mlx5e_poll_xdpsq_cq(&c->rq_xdpsq.cq);
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148
 
145
-	if (likely(budget)) { /* budget=0 means: don't poll rx rings */
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-		if (xsk_open)
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-			work_done = mlx5e_poll_rx_cq(&xskrq->cq, budget);
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+	if (xsk_open)
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+		work_done = mlx5e_poll_rx_cq(&xskrq->cq, budget);
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151
 
149
-		if (likely(budget - work_done))
150
-			work_done += mlx5e_poll_rx_cq(&rq->cq, budget - work_done);
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+	if (likely(budget - work_done))
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+		work_done += mlx5e_poll_rx_cq(&rq->cq, budget - work_done);
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154
 
152
-		busy |= work_done == budget;
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-	}
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+	busy |= work_done == budget;
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156
 
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 	mlx5e_poll_ico_cq(&c->icosq.cq);
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 	if (mlx5e_poll_ico_cq(&c->async_icosq.cq))