netdev - [PATCH v4 net-next 10/12] veth: enable BIG TCP packets

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Message-Id: <20220506153048.3695721-11-eric.dumazet@gmail.com>
Date:   Fri,  6 May 2022 08:30:46 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     netdev <netdev@...r.kernel.org>, Coco Li <lixiaoyan@...gle.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH v4 net-next 10/12] veth: enable BIG TCP packets

From: Eric Dumazet <edumazet@...gle.com>

Set the driver limit to 512 KB per TSO ipv6 packet.

This allows the admin/user to set a GSO ipv6 limit up to this value.

ip link set dev veth10 gso_ipv6_max_size 200000

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 drivers/net/veth.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index f474e79a774580e4cb67da44b5f0c796c3ce8abb..989248b0f0c64349494a54735bb5abac66a42a93 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -1647,6 +1647,7 @@ static void veth_setup(struct net_device *dev)
 	dev->hw_features = VETH_FEATURES;
 	dev->hw_enc_features = VETH_FEATURES;
 	dev->mpls_features = NETIF_F_HW_CSUM | NETIF_F_GSO_SOFTWARE;
+	netif_set_tso_max_size(dev, 512 * 1024);
 }
 
 /*
-- 
2.36.0.512.ge40c2bad7a-goog