On Wed, Dec 04, 2024 at 05:58:06PM +0100, Stefano Brivio wrote:On Wed, 4 Dec 2024 16:33:21 +0100 Laurent Vivier <lvivier(a)redhat.com> wrote:The original version double counted the IP header: IP_MAX_MTU includes the IP header, and so did hdrlen. -- David Gibson (he or they) | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you, not the other way | around. http://www.ozlabs.org/~dgibsonIn udp_vu_sock_recv(), collect a segment with a size defined to IP_MAX_MTU + ETH_HLEN + sizeof(struct virtio_net_hdr_mrg_rxbuf)Can you briefly explain why, and what's the problem otherwise?