I am trying to figure out an issue where after a process crash associations are lingering. On the server: vagrant@magma-dev:~/build/oai_sgw$ sudo cat /proc/net/sctp/assocs ASSOC SOCK STY SST ST HBKT ASSOC-ID TX_QUEUE RX_QUEUE UID INODE LPORT RPORT LADDRS <-> RADDRS HBINT INS OUTS MAXRT T1X T2X RTXC wmema wmemq sndbuf rcvbuf ffff8800b58c7000 ffff8800da4d0bc0 2 1 3 0 9 0 0 0 0 36412 36412 192.168.60.142 <-> *192.168.60.141 7500 3 8 10 0 7 0 1 0 212992 212992 sudo lsof | grep ffff8800da4d0bc0 after the application server restarts the client retries with INIT and COOKIE_ECHO and the server replies back with INIT_ACK and COOKIE_ACK without any notification to the application server and any subsequent request from the client is not seen on the server. Some pointers would be useful 1. Why can't I see the socket in lsof. 2. How do I shutdown the existing association, so the server can rebuild the state on the associations, and restart cleanly. vagrant@magma-dev:~/build/oai_sgw$ uname -a Linux magma-dev 4.7.4-040704-generic #201609150330 SMP Thu Sep 15 07:32:22 UTC 2016 x86_64 GNU/Linux vagrant@magma-dev:~/build/oai_sgw$ sudo modinfo sctp filename: /lib/modules/4.7.4-040704-generic/kernel/net/sctp/sctp.ko license: GPL description: Support for the SCTP protocol (RFC2960) author: Linux Kernel SCTP developers <linux-sctp@xxxxxxxxxxxxxxx> alias: net-pf-10-proto-132 alias: net-pf-2-proto-132 depends: libcrc32c intree: Y vermagic: 4.7.4-040704-generic SMP mod_unload modversions parm: no_checksums:Disable checksums computing and verification (bool) The code can be found here: https://gitlab.eurecom.fr/oai/openair-cn/blob/develop/SRC/SCTP/sctp_primitives_server.c#L352 Thanks Amar -- To unsubscribe from this list: send the line "unsubscribe linux-sctp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
