net: bonding, dummy, ifb, team: advertise NETIF_F_GSO_SOFTWARE

Virtual netdevs should use NETIF_F_GSO_SOFTWARE to forward GSO skbs
as-is and let the final drivers deal with them when supported.
Also remove NETIF_F_GSO_UDP_L4 from bonding and team drivers as it's
now included in the "software" list.
Suggested-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/bonding/bond_main.c

@@ -1228,14 +1228,14 @@ static netdev_features_t bond_fix_features(struct net_device *dev,
 }
 
 #define BOND_VLAN_FEATURES	(NETIF_F_HW_CSUM | NETIF_F_SG | \
-				 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
+				 NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | \
 				 NETIF_F_HIGHDMA | NETIF_F_LRO)
 
 #define BOND_ENC_FEATURES	(NETIF_F_HW_CSUM | NETIF_F_SG | \
-				 NETIF_F_RXCSUM | NETIF_F_ALL_TSO)
+				 NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE)
 
 #define BOND_MPLS_FEATURES	(NETIF_F_HW_CSUM | NETIF_F_SG | \
-				 NETIF_F_ALL_TSO)
+				 NETIF_F_GSO_SOFTWARE)
 
 
 static void bond_compute_features(struct bonding *bond)
@@ -1291,8 +1291,7 @@ static void bond_compute_features(struct bonding *bond)
 	bond_dev->vlan_features = vlan_features;
 	bond_dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |
 				    NETIF_F_HW_VLAN_CTAG_TX |
-				    NETIF_F_HW_VLAN_STAG_TX |
-				    NETIF_F_GSO_UDP_L4;
+				    NETIF_F_HW_VLAN_STAG_TX;
 #ifdef CONFIG_XFRM_OFFLOAD
 	bond_dev->hw_enc_features |= xfrm_features;
 #endif /* CONFIG_XFRM_OFFLOAD */
@@ -4721,7 +4720,7 @@ void bond_setup(struct net_device *bond_dev)
 				NETIF_F_HW_VLAN_CTAG_RX |
 				NETIF_F_HW_VLAN_CTAG_FILTER;
 
-	bond_dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4;
+	bond_dev->hw_features |= NETIF_F_GSO_ENCAP_ALL;
 #ifdef CONFIG_XFRM_OFFLOAD
 	bond_dev->hw_features |= BOND_XFRM_FEATURES;
 #endif /* CONFIG_XFRM_OFFLOAD */

drivers/net/dummy.c

@@ -124,7 +124,7 @@ static void dummy_setup(struct net_device *dev)
 	dev->flags &= ~IFF_MULTICAST;
 	dev->priv_flags |= IFF_LIVE_ADDR_CHANGE | IFF_NO_QUEUE;
 	dev->features	|= NETIF_F_SG | NETIF_F_FRAGLIST;
-	dev->features	|= NETIF_F_ALL_TSO;
+	dev->features	|= NETIF_F_GSO_SOFTWARE;
 	dev->features	|= NETIF_F_HW_CSUM | NETIF_F_HIGHDMA | NETIF_F_LLTX;
 	dev->features	|= NETIF_F_GSO_ENCAP_ALL;
 	dev->hw_features |= dev->features;

drivers/net/ifb.c

@@ -187,8 +187,7 @@ static const struct net_device_ops ifb_netdev_ops = {
 };
 
 #define IFB_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG  | NETIF_F_FRAGLIST	| \
-		      NETIF_F_TSO_ECN | NETIF_F_TSO | NETIF_F_TSO6	| \
-		      NETIF_F_GSO_ENCAP_ALL 				| \
+		      NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ENCAP_ALL	| \
 		      NETIF_F_HIGHDMA | NETIF_F_HW_VLAN_CTAG_TX		| \
 		      NETIF_F_HW_VLAN_STAG_TX)
 

drivers/net/team/team.c

@@ -975,11 +975,11 @@ static void team_port_disable(struct team *team,
 }
 
 #define TEAM_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \
-			    NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
+			    NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | \
 			    NETIF_F_HIGHDMA | NETIF_F_LRO)
 
 #define TEAM_ENC_FEATURES	(NETIF_F_HW_CSUM | NETIF_F_SG | \
-				 NETIF_F_RXCSUM | NETIF_F_ALL_TSO)
+				 NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE)
 
 static void __team_compute_features(struct team *team)
 {
@@ -1009,8 +1009,7 @@ static void __team_compute_features(struct team *team)
 	team->dev->vlan_features = vlan_features;
 	team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |
 				     NETIF_F_HW_VLAN_CTAG_TX |
-				     NETIF_F_HW_VLAN_STAG_TX |
-				     NETIF_F_GSO_UDP_L4;
+				     NETIF_F_HW_VLAN_STAG_TX;
 	team->dev->hard_header_len = max_hard_header_len;
 
 	team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
@@ -2175,7 +2174,7 @@ static void team_setup(struct net_device *dev)
 			   NETIF_F_HW_VLAN_CTAG_RX |
 			   NETIF_F_HW_VLAN_CTAG_FILTER;
 
-	dev->hw_features |= NETIF_F_GSO_ENCAP_ALL | NETIF_F_GSO_UDP_L4;
+	dev->hw_features |= NETIF_F_GSO_ENCAP_ALL;
 	dev->features |= dev->hw_features;
 	dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX;
 }