netdev - [PATCH net-next V2] bonding: add ESP offload features when slaves support

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Message-ID: <20241105192721.584822-1-tariqt@nvidia.com>
Date: Tue, 5 Nov 2024 21:27:21 +0200
From: Tariq Toukan <tariqt@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>, "Andrew
 Lunn" <andrew+netdev@...n.ch>, Jay Vosburgh <jv@...sburgh.net>, "Andy
 Gospodarek" <andy@...yhouse.net>
CC: <netdev@...r.kernel.org>, Saeed Mahameed <saeedm@...dia.com>, Gal Pressman
	<gal@...dia.com>, Leon Romanovsky <leonro@...dia.com>, Jianbo Liu
	<jianbol@...dia.com>, Boris Pismenny <borisp@...dia.com>, Tariq Toukan
	<tariqt@...dia.com>
Subject: [PATCH net-next V2] bonding: add ESP offload features when slaves support

From: Jianbo Liu <jianbol@...dia.com>

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@...dia.com>
Reviewed-by: Boris Pismenny <borisp@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
 drivers/net/bonding/bond_main.c | 9 +++++++++
 1 file changed, 9 insertions(+)

V2:
Addressed feedback about unnecessary ifdefs.

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 5812e8eaccf1..9e8bdd0d0922 100644
--- 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 |
-- 
2.44.0