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Message-ID: <1706089058-1364-1-git-send-email-wangyunjian@huawei.com>
Date: Wed, 24 Jan 2024 17:37:38 +0800
From: Yunjian Wang <wangyunjian@...wei.com>
To: <mst@...hat.com>, <willemdebruijn.kernel@...il.com>,
<jasowang@...hat.com>, <kuba@...nel.org>, <davem@...emloft.net>,
<magnus.karlsson@...el.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<kvm@...r.kernel.org>, <virtualization@...ts.linux.dev>,
<xudingke@...wei.com>, Yunjian Wang <wangyunjian@...wei.com>
Subject: [PATCH net-next 1/2] xsk: Remove non-zero 'dma_page' check in xp_assign_dev
Now dma mappings are used by the physical NICs. However the vNIC
maybe do not need them. So remove non-zero 'dma_page' check in
xp_assign_dev.
Signed-off-by: Yunjian Wang <wangyunjian@...wei.com>
---
net/xdp/xsk_buff_pool.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c
index 28711cc44ced..939b6e7b59ff 100644
--- a/net/xdp/xsk_buff_pool.c
+++ b/net/xdp/xsk_buff_pool.c
@@ -219,16 +219,9 @@ int xp_assign_dev(struct xsk_buff_pool *pool,
if (err)
goto err_unreg_pool;
- if (!pool->dma_pages) {
- WARN(1, "Driver did not DMA map zero-copy buffers");
- err = -EINVAL;
- goto err_unreg_xsk;
- }
pool->umem->zc = true;
return 0;
-err_unreg_xsk:
- xp_disable_drv_zc(pool);
err_unreg_pool:
if (!force_zc)
err = 0; /* fallback to copy mode */
--
2.33.0
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