54 lines
1.5 KiB
Diff
54 lines
1.5 KiB
Diff
From 79572c98c554dcdb080bca547c871a51716dcdf8 Mon Sep 17 00:00:00 2001
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From: Sven Auhagen <sven.auhagen@voleatech.de>
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Date: Sat, 25 Jan 2020 08:07:03 +0000
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Subject: [PATCH] mvneta driver disallow XDP program on hardware buffer
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management
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Recently XDP Support was added to the mvneta driver
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for software buffer management only.
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It is still possible to attach an XDP program if
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hardware buffer management is used.
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It is not doing anything at that point.
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The patch disallows attaching XDP programs to mvneta
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if hardware buffer management is used.
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I am sorry about that. It is my first submission and I am having
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some troubles with the format of my emails.
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v4 -> v5:
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- Remove extra tabs
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v3 -> v4:
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- Please ignore v3 I accidentally submitted
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my other patch with git-send-mail and v4 is correct
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v2 -> v3:
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- My mailserver corrupted the patch
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resubmission with git-send-email
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v1 -> v2:
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- Fixing the patches indentation
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Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/ethernet/marvell/mvneta.c | 6 ++++++
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1 file changed, 6 insertions(+)
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--- a/drivers/net/ethernet/marvell/mvneta.c
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+++ b/drivers/net/ethernet/marvell/mvneta.c
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@@ -4263,6 +4263,12 @@ static int mvneta_xdp_setup(struct net_d
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return -EOPNOTSUPP;
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}
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+ if (pp->bm_priv) {
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+ NL_SET_ERR_MSG_MOD(extack,
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+ "Hardware Buffer Management not supported on XDP");
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+ return -EOPNOTSUPP;
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+ }
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+
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need_update = !!pp->xdp_prog != !!prog;
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if (running && need_update)
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mvneta_stop(dev);
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