Patch 1/5 handles the easy non-batched case with a copy to a padded buffer (only if needed). Patches 2/5 and 3/5 clean coding style up before further changes. Patch 4/5 deals with TCP and UDP batched frames in non-vhost-user modes. Patch 5/5 is for batched frames in vhost-user mode instead, and this is the part I'm the least confident about, in particular with regard to the size assumptions on vhost-user provided buffers. Stefano Brivio (5): tap: Pad non-batched frames to 802.3 minimum (60 bytes) if needed tcp: Fix coding style for comment to enum tcp_iov_parts udp: Fix coding style for comment to enum udp_iov_idx tcp, udp: Pad batched frames to 60 bytes (802.3 minimum) in non-vhost-user modes tcp, udp: Pad batched frames for vhost-user modes to 60 bytes (802.3 minimum) tap.c | 7 +++++++ tcp.c | 2 -- tcp_buf.c | 23 +++++++++++++++++++++++ tcp_internal.h | 5 ++++- tcp_vu.c | 27 +++++++++++++++++++++++++++ udp.c | 31 ++++++++++++++++++++++++++----- udp_vu.c | 11 ++++++++++- util.c | 3 +++ util.h | 3 +++ 9 files changed, 103 insertions(+), 9 deletions(-) -- 2.43.0