From 40b8c45492efc97d9d397475bf475d497fbb9174 Mon Sep 17 00:00:00 2001
From: "Mintz, Yuval" <Yuval.Mintz@cavium.com>
Date: Fri, 7 Apr 2017 11:04:59 +0300
Subject: [PATCH] qede: Prevent VFs from using XDP
Current implementation of VFs is very tight in regard to queue
resources. VFs support for XDP would require quite a bit of additional
infrastructure in qede and qed [sharing of queue-zones between queues,
more VF cids, mapping of the doorbell bar, etc.].
For now, prevent XDP programs from being attached to VFs.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/qlogic/qede/qede_filter.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/ethernet/qlogic/qede/qede_filter.c b/drivers/net/ethernet/qlogic/qede/qede_filter.c
index 107c3fda4792c..ecd5b3ab783f6 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_filter.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_filter.c
@@ -537,6 +537,11 @@ int qede_xdp(struct net_device *dev, struct netdev_xdp *xdp)
{
struct qede_dev *edev = netdev_priv(dev);
+ if (IS_VF(edev)) {
+ DP_NOTICE(edev, "VFs don't support XDP\n");
+ return -EOPNOTSUPP;
+ }
+
switch (xdp->command) {
case XDP_SETUP_PROG:
return qede_xdp_set(edev, xdp->prog);
--
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