tcp_create_openreq_child() is essentially cloning a listener, then
must initialize some fields that can not be inherited.
Listeners are either fresh sockets, or sockets that came through
tcp_disconnect() after a session that dirtied many fields.
By moving code to tcp_disconnect(), we can shorten time taken
to create a clone, since tcp_disconnect() operation is very
unlikely.
Eric Dumazet (11):
tcp: do not set snd_ssthresh in tcp_create_openreq_child()
tcp: move icsk_rto init to tcp_disconnect()
tcp: do not clear packets_out in tcp_create_openreq_child()
tcp: do not clear srtt_us in tcp_create_openreq_child
tcp: move mdev_us init to tcp_disconnect()
tcp: move snd_cwnd & snd_cwnd_cnt init to tcp_disconnect()
tcp: do not clear urg_data in tcp_create_openreq_child
tcp: move retrans_out,sacked_out,tlp_high_seq,last_oow_ack_time init
to tcp_disconnect()
tcp: move app_limited init to tcp_disconnect()
tcp: move tp->rack init to tcp_disconnect()
tcp: move rx_opt & syn_data_acked init to tcp_disconnect()
net/ipv4/tcp.c | 21 ++++++++++++++++++++-
net/ipv4/tcp_minisocks.c | 34 ----------------------------------
2 files changed, 20 insertions(+), 35 deletions(-)
--
2.20.1.321.g9e740568ce-goog
