packet: add TP_STATUS_GSO_TCP for tp_status

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Introduce TP_STATUS_GSO_TCP tp_status flag to tell the af_packet user
that this is a TCP GSO packet. When parsing IPv4 BIG TCP packets in
tcpdump/libpcap, it can use tp_len as the IPv4 packet len when this
flag is set, as iph tot_len is set to 0 for IPv4 BIG TCP packets.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Xin Long 2023-01-28 10:58:37 -05:00 • committed by Jakub Kicinski

parent 50e6fb5c6e

commit 8e08bb75b6

2 changed files with 5 additions and 0 deletions

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include/uapi/linux/if_packet.h

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