bonding: add ESP offload features when slaves support

commit-author Jianbo Liu <jianbol@nvidia.com>
commit 4861333

Add NETIF_F_GSO_ESP bit to bond's gso_partial_features if all slaves
support it, such that ESP segmentation is handled by hardware if possible.

	Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
	Reviewed-by: Boris Pismenny <borisp@nvidia.com>
	Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20241105192721.584822-1-tariqt@nvidia.com
	Signed-off-by: Jakub Kicinski <kuba@kernel.org>
(cherry picked from commit 4861333)
	Signed-off-by: Srinivas Neginhal <sneginhal@google.com>

Author: sneginha

drivers/net/bonding/bond_main.c

@@ -1408,6 +1408,7 @@ static void bond_compute_features(struct bonding *bond)
 {
 	unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
 					IFF_XMIT_DST_RELEASE_PERM;
+	netdev_features_t gso_partial_features = NETIF_F_GSO_ESP;
 	netdev_features_t vlan_features = BOND_VLAN_FEATURES;
 	netdev_features_t enc_features  = BOND_ENC_FEATURES;
 #ifdef CONFIG_XFRM_OFFLOAD
@@ -1440,6 +1441,9 @@ static void bond_compute_features(struct bonding *bond)
 							  BOND_XFRM_FEATURES);
 #endif /* CONFIG_XFRM_OFFLOAD */
 
+		if (slave->dev->hw_enc_features & NETIF_F_GSO_PARTIAL)
+			gso_partial_features &= slave->dev->gso_partial_features;
+
 		mpls_features = netdev_increment_features(mpls_features,
 							  slave->dev->mpls_features,
 							  BOND_MPLS_FEATURES);
@@ -1453,6 +1457,11 @@ static void bond_compute_features(struct bonding *bond)
 	}
 	bond_dev->hard_header_len = max_hard_header_len;
 
+	if (gso_partial_features & NETIF_F_GSO_ESP)
+		bond_dev->gso_partial_features |= NETIF_F_GSO_ESP;
+	else
+		bond_dev->gso_partial_features &= ~NETIF_F_GSO_ESP;
+
 done:
 	bond_dev->vlan_features = vlan_features;
 	bond_dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |