how to edit tcp timeout?
I have found the way on internet( LinuxのTCP SYNの再送間隔の初期値が3秒から1秒に変更されていた - 元RX-7乗りの適当な日々 ) but they said have to fixed in tcp.h file. I cannot found tcp.h file on my OS.
If anyone know please tell me where is it??
did you check the yocto source code?
owner@CNHKG-EX-001367:~/Yocto/WP76/R17_SWI9X07Y_03.01.07.00/yocto$ find ./kernel -name "tcp.h"
./kernel/include/uapi/linux/tcp.h
./kernel/include/linux/tcp.h
./kernel/include/net/tcp.h
./kernel/fs/ocfs2/cluster/tcp.h
./kernel/net/rds/tcp.h
So, If I want to edit tcp.h file,I have to install os to the board again??
Does it have anyway to edit without install new os??
Yes, you need to rebuild the yocto linux if you edit the tcp.h.
for alternative way, does this help?
I saw there are many TCP setting:
root@swi-mdm9x28-wp:~# ls /proc/sys/net/ipv4/
cipso_cache_bucket_size tcp_early_retrans
cipso_cache_enable tcp_ecn
cipso_rbm_optfmt tcp_fack
cipso_rbm_strictvalid tcp_fastopen
conf tcp_fastopen_key
fwmark_reflect tcp_fin_timeout
icmp_echo_ignore_all tcp_frto
icmp_echo_ignore_broadcasts tcp_fwmark_accept
icmp_errors_use_inbound_ifaddr tcp_keepalive_intvl
icmp_ignore_bogus_error_responses tcp_keepalive_probes
icmp_msgs_burst tcp_keepalive_time
icmp_msgs_per_sec tcp_limit_output_bytes
icmp_ratelimit tcp_low_latency
icmp_ratemask tcp_max_orphans
igmp_max_memberships tcp_max_syn_backlog
igmp_max_msf tcp_max_tw_buckets
igmp_qrv tcp_mem
inet_peer_maxttl tcp_min_snd_mss
inet_peer_minttl tcp_min_tso_segs
inet_peer_threshold tcp_moderate_rcvbuf
ip_default_ttl tcp_mtu_probing
ip_dynaddr tcp_no_metrics_save
ip_early_demux tcp_notsent_lowat
ip_forward tcp_orphan_retries
ip_forward_use_pmtu tcp_reordering
ip_local_port_range tcp_retrans_collapse
ip_local_reserved_ports tcp_retries1
ip_no_pmtu_disc tcp_retries2
ip_nonlocal_bind tcp_rfc1337
ipfrag_high_thresh tcp_rmem
ipfrag_low_thresh tcp_sack
ipfrag_max_dist tcp_slow_start_after_idle
ipfrag_secret_interval tcp_stdurg
ipfrag_time tcp_syn_retries
neigh tcp_synack_retries
netfilter tcp_syncookies
ping_group_range tcp_thin_dupack
reserved_port_bind tcp_thin_linear_timeouts
route tcp_timestamps
tcp_abort_on_overflow tcp_tso_win_divisor
tcp_adv_win_scale tcp_tw_recycle
tcp_allowed_congestion_control tcp_tw_reuse
tcp_app_win tcp_use_userconfig
tcp_autocorking tcp_window_scaling
tcp_available_congestion_control tcp_wmem
tcp_base_mss tcp_workaround_signed_windows
tcp_challenge_ack_limit udp_mem
tcp_congestion_control udp_rmem_min
tcp_default_init_rwnd udp_wmem_min
tcp_delack_seg xfrm4_gc_thresh
tcp_dsack
There don’t have tcp_tw_timeout to setting as the link had used.
How about tcp_fin_timeout or tcp_thin_linear_timeouts?
If they don’t help, maybe you need to rebuild the yocto linux for editing the tcp.h.