From 7d2dabaa1796e54d442c02b4d108336730982baf Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 1 Jul 2025 08:45:40 +0000 Subject: [PATCH] net: ifb: support BIG TCP packets Set the driver limit to GSO_MAX_SIZE (512 KB). This allows the admin/user to set a GSO limit up to this value, to avoid segmenting too large GRO packets in the netem -> ifb path. Signed-off-by: Eric Dumazet Link: https://patch.msgid.link/20250701084540.459261-1-edumazet@google.com Signed-off-by: Jakub Kicinski --- drivers/net/ifb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c index 67424888ff0aa..d3dc0914450a8 100644 --- a/drivers/net/ifb.c +++ b/drivers/net/ifb.c @@ -333,6 +333,7 @@ static void ifb_setup(struct net_device *dev) dev->min_mtu = 0; dev->max_mtu = 0; + netif_set_tso_max_size(dev, GSO_MAX_SIZE); } static netdev_tx_t ifb_xmit(struct sk_buff *skb, struct net_device *dev) -- 2.47.2