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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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30099b2e9b
When recording the number of SYNACK retransmits for servers using TCP Fast Open, fix the code to ensure that we copy over the retransmit count from the request_sock after we receive the ACK that completes the 3-way handshake. The story here is similar to that of SYNACK RTT measurements. Previously we were always doing this in tcp_v4_syn_recv_sock(). However, for TCP Fast Open connections tcp_v4_conn_req_fastopen() calls tcp_v4_syn_recv_sock() at the time we receive the SYN. So for TFO we must copy the final SYNACK retransmit count in tcp_rcv_state_process(). Note that copying over the SYNACK retransmit count will give us the correct count since, as is mentioned in a comment in tcp_retransmit_timer(), before we receive an ACK for our SYN-ACK a TFO passive connection does not retransmit anything else (e.g., data or FIN segments). Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| appletalk | ||
| atm | ||
| ax25 | ||
| batman-adv | ||
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| bridge | ||
| caif | ||
| can | ||
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| core | ||
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| ethernet | ||
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| iucv | ||
| key | ||
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| mac80211 | ||
| mac802154 | ||
| netfilter | ||
| netlabel | ||
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| nfc | ||
| openvswitch | ||
| packet | ||
| phonet | ||
| rds | ||
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| rose | ||
| rxrpc | ||
| sched | ||
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| sunrpc | ||
| tipc | ||
| unix | ||
| wanrouter | ||
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| x25 | ||
| xfrm | ||
| compat.c | ||
| Kconfig | ||
| Makefile | ||
| nonet.c | ||
| socket.c | ||
| sysctl_net.c | ||