[dpdk-stable] [PATCH v4 5/8] net/netvsc: remove process event optimization
Stephen Hemminger
stephen at networkplumber.org
Tue Mar 31 19:14:01 CEST 2020
Remove unlocked check for data in receive ring.
This check is not safe because of missing barriers etc.
Fixes: 4e9c73e96e83 ("net/netvsc: add Hyper-V network device")
Cc: stable at dpdk.org
Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
drivers/net/netvsc/hn_rxtx.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/net/netvsc/hn_rxtx.c b/drivers/net/netvsc/hn_rxtx.c
index 32c03e3da0c7..e8df84604202 100644
--- a/drivers/net/netvsc/hn_rxtx.c
+++ b/drivers/net/netvsc/hn_rxtx.c
@@ -969,10 +969,6 @@ uint32_t hn_process_events(struct hn_data *hv, uint16_t queue_id,
rxq = queue_id == 0 ? hv->primary : dev->data->rx_queues[queue_id];
- /* If no pending data then nothing to do */
- if (rte_vmbus_chan_rx_empty(rxq->chan))
- return 0;
-
/*
* Since channel is shared between Rx and TX queue need to have a lock
* since DPDK does not force same CPU to be used for Rx/Tx.
--
2.20.1
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