bonding: add ESP offload features when slaves support

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>

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 5812e8e..9e8bdd0 100644 (file)
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1545,6 +1545,7 @@ 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
@@ -1577,6 +1578,9 @@ 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);
@@ -1590,6 +1594,11 @@ 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 |