ipv6: add tos reflection in TCP reset and ack

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Currently, ipv6 stack does not do any TOS reflection. To make the
behavior consistent with v4 stack, this commit adds TOS reflection in
tcp_v6_reqsk_send_ack() and tcp_v6_send_reset(). We clear the lower
2-bit ECN value of the received TOS in compliance with RFC 3168 6.1.5
robustness principles.

Signed-off-by: Wei Wang <weiwan@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Wei Wang 2020-09-08 14:29:02 -07:00 • committed by David S. Miller

parent 56bbc22d83

commit e92dd77e6f

1 changed files with 5 additions and 5 deletions

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net/ipv6/tcp_ipv6.c

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