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Message-Id: <20230328131233.2534-3-jgross@suse.com>
Date: Tue, 28 Mar 2023 15:12:32 +0200
From: Juergen Gross <jgross@...e.com>
To: linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc: Juergen Gross <jgross@...e.com>, Wei Liu <wei.liu@...nel.org>,
Paul Durrant <paul@....org>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
xen-devel@...ts.xenproject.org, Jan Beulich <jbeulich@...e.com>
Subject: [PATCH v2 2/3] xen/netback: remove not needed test in xenvif_tx_build_gops()
The tests for the number of grant mapping or copy operations reaching
the array size of the operations buffer at the end of the main loop in
xenvif_tx_build_gops() isn't needed.
The loop can handle at maximum MAX_PENDING_REQS transfer requests, as
XEN_RING_NR_UNCONSUMED_REQUESTS() is taking unsent responses into
consideration, too.
Remove the tests.
Suggested-by: Jan Beulich <jbeulich@...e.com>
Signed-off-by: Juergen Gross <jgross@...e.com>
Reviewed-by: Paul Durrant <paul@....org>
---
drivers/net/xen-netback/netback.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index 54c76af90233..9ca4b69d3b39 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -1084,10 +1084,6 @@ static void xenvif_tx_build_gops(struct xenvif_queue *queue,
__skb_queue_tail(&queue->tx_queue, skb);
queue->tx.req_cons = idx;
-
- if ((*map_ops >= ARRAY_SIZE(queue->tx_map_ops)) ||
- (*copy_ops >= ARRAY_SIZE(queue->tx_copy_ops)))
- break;
}
return;
--
2.35.3
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