netdev - [PATCH net-next 1/8] netdevsim: add more hw

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Message-ID: <b918dc4dd76410a57f7516a855f66b0a2bd58326.1730929545.git.sd@queasysnail.net>
Date: Thu,  7 Nov 2024 00:13:27 +0100
From: Sabrina Dubroca <sd@...asysnail.net>
To: netdev@...r.kernel.org
Cc: Sabrina Dubroca <sd@...asysnail.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Shuah Khan <shuah@...nel.org>,
	linux-kselftest@...r.kernel.org
Subject: [PATCH net-next 1/8] netdevsim: add more hw_features

netdevsim currently only set HW_TC in its hw_features, but other
features should also be present to better reflect the behavior of real
HW.

In my macsec offload testing, this ends up as HW_CSUM being missing
from hw_features, so it doesn't stick in wanted_features when offload
is turned off. Then HW_CSUM (and thus TSO, thanks to
netdev_fix_features) is not automatically turned back on when offload
is re-enabled.

Signed-off-by: Sabrina Dubroca <sd@...asysnail.net>
---
 drivers/net/netdevsim/netdev.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c
index cad85bb0cf54..0be47fed4efc 100644
--- a/drivers/net/netdevsim/netdev.c
+++ b/drivers/net/netdevsim/netdev.c
@@ -663,7 +663,11 @@ static void nsim_setup(struct net_device *dev)
 			 NETIF_F_FRAGLIST |
 			 NETIF_F_HW_CSUM |
 			 NETIF_F_TSO;
-	dev->hw_features |= NETIF_F_HW_TC;
+	dev->hw_features |= NETIF_F_HW_TC |
+			    NETIF_F_SG |
+			    NETIF_F_FRAGLIST |
+			    NETIF_F_HW_CSUM |
+			    NETIF_F_TSO;
 	dev->max_mtu = ETH_MAX_MTU;
 	dev->xdp_features = NETDEV_XDP_ACT_HW_OFFLOAD;
 }
-- 
2.47.0