This series introduces iov_tail to convey frame information between functions. This is only an API change, for the moment the memory pool is only able to store contiguous buffer, so, except for vhost-user in a special case, we only play with iovec array with only one entry. Laurent Vivier (18): arp: Don't mix incoming and outgoing buffers iov: Update IOV_REMOVE_HEADER() and IOV_PEEK_HEADER() tap: Use iov_tail with tap_add_packet() packet: Use iov_tail with packet_add() packet: Add packet_base() arp: Convert to iov_tail ndp: Convert to iov_tail icmp: Convert to iov_tail udp: Convert to iov_tail tcp: Convert tcp_tap_handler() to use iov_tail tcp: Convert tcp_data_from_tap() to use iov_tail dhcpv6: Convert to iov_tail dhcpv6: move offset initialization out of dhcpv6_opt() dhcpv6: Use iov_tail in dhcpv6_opt() dhcp: Convert to iov_tail tap: Convert to iov_tail ip: Use iov_tail in ipv6_l4hdr() tap: Convert to iov_tail arp.c | 90 ++++++++++++++++++++++++------------ dhcp.c | 38 ++++++++------- dhcpv6.c | 70 +++++++++++++++------------- icmp.c | 38 +++++++++------ iov.c | 130 ++++++++++++++++++++++++++++++++++++++++++++++++---- iov.h | 54 ++++++++++++++++------ ip.c | 27 +++++------ ip.h | 3 +- ndp.c | 7 ++- packet.c | 58 ++++++++++------------- packet.h | 19 ++++---- pcap.c | 1 + tap.c | 86 ++++++++++++++++++++++------------ tap.h | 2 +- tcp.c | 41 +++++++++++------ tcp_buf.c | 2 +- udp.c | 37 ++++++++++----- vu_common.c | 25 ++-------- 18 files changed, 474 insertions(+), 254 deletions(-) -- 2.49.0