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- From 79572c98c554dcdb080bca547c871a51716dcdf8 Mon Sep 17 00:00:00 2001
- From: Sven Auhagen <[email protected]>
- Date: Sat, 25 Jan 2020 08:07:03 +0000
- Subject: [PATCH] mvneta driver disallow XDP program on hardware buffer
- management
- Recently XDP Support was added to the mvneta driver
- for software buffer management only.
- It is still possible to attach an XDP program if
- hardware buffer management is used.
- It is not doing anything at that point.
- The patch disallows attaching XDP programs to mvneta
- if hardware buffer management is used.
- I am sorry about that. It is my first submission and I am having
- some troubles with the format of my emails.
- v4 -> v5:
- - Remove extra tabs
- v3 -> v4:
- - Please ignore v3 I accidentally submitted
- my other patch with git-send-mail and v4 is correct
- v2 -> v3:
- - My mailserver corrupted the patch
- resubmission with git-send-email
- v1 -> v2:
- - Fixing the patches indentation
- Signed-off-by: Sven Auhagen <[email protected]>
- Signed-off-by: David S. Miller <[email protected]>
- ---
- drivers/net/ethernet/marvell/mvneta.c | 6 ++++++
- 1 file changed, 6 insertions(+)
- --- a/drivers/net/ethernet/marvell/mvneta.c
- +++ b/drivers/net/ethernet/marvell/mvneta.c
- @@ -4270,6 +4270,12 @@ static int mvneta_xdp_setup(struct net_d
- return -EOPNOTSUPP;
- }
-
- + if (pp->bm_priv) {
- + NL_SET_ERR_MSG_MOD(extack,
- + "Hardware Buffer Management not supported on XDP");
- + return -EOPNOTSUPP;
- + }
- +
- need_update = !!pp->xdp_prog != !!prog;
- if (running && need_update)
- mvneta_stop(dev);
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