This is the TCP counterpart to the UDP multi-iov series. It converts the TCP vhost-user receive path from direct pointer arithmetic (via vu_eth(), vu_ip(), etc.) to the iov_tail abstraction, removing the assumption that all headers reside in a single contiguous buffer. With this series applied, the TCP path correctly handles virtio-net drivers that provide multiple buffers per virtqueue element (e.g. iPXE provides the vnet header in the first buffer and the frame payload in a second one), matching the support already present in the UDP path. Based-on: 20260327175834.831995-1-lvivier@redhat.com v2: - add "tcp: Encode checksum computation flags in a single parameter" - remove IOV_PUT_HEADER()/with_header() and use IOV_PUSH_HEADER() - don't use the iov_tail to provide the headers to the functions Laurent Vivier (5): tcp: Encode checksum computation flags in a single parameter tcp_vu: Build headers on the stack and write them into the iovec tcp_vu: Support multibuffer frames in tcp_vu_sock_recv() iov: Add iov_memcopy() to copy data between iovec arrays tcp_vu: Support multibuffer frames in tcp_vu_send_flag() iov.c | 45 ++++++ iov.h | 2 + tcp.c | 25 ++-- tcp_buf.c | 24 ++-- tcp_internal.h | 7 +- tcp_vu.c | 371 +++++++++++++++++++++++++++++-------------------- vu_common.h | 20 --- 7 files changed, 299 insertions(+), 195 deletions(-) -- 2.53.0