SCTP ERROR: socket: Protocol not supported on aarch64 for Linux.

[yunfan188]

My working computer info as follows:
$ uname -a
Linux centos-arm 4.18.0-80.7.2.el7.aarch64 #1 SMP Thu Sep 12 16:13:20 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux
$ cat /etc/redhat-release
CentOS Linux release 7.6.1810 (AltArch)
I have installed sctp lib,its version: lksctp-tools-1.0.17.tar.gz.
my execute file dependent libraries info: $ ldd sctp_svr
linux-vdso.so.1 => (0x0000ffff876a0000)
libsctp.so.1 => /home/mals/cu/local/lib/libsctp.so.1 (0x0000ffff87660000)
libc.so.6 => /lib64/libc.so.6 (0x0000ffff874d0000)
/lib/ld-linux-aarch64.so.1 (0x0000ffff876b0000)
but when I run my bin file: ./sctp_svr 192.168.0.128 9998
socket: Protocol not supported

The relative code as follows:
listen_sock=socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP); //create a sctp socket
if(listen_sock == -1){
perror("socket");
return -1;
}

So, I want to know whether the sctp third lib does not support arm64 arch for Linux or not?

[marceloleitner]

On Thu, Jul 16, 2020 at 07:50:37PM -0700, yunfan188 wrote: So, I want to know whether the sctp third lib does not support arm64 arch for Linux or not?

It is supported, but you need two things: - install kernel-modules-extra package (sctp.ko is there) - un-blacklist the sctp module in /etc/modprobe.d/sctp-blacklist.conf Btw, not related but you may want to update that kernel, if possible.

[marceloleitner]

On Thu, Jul 16, 2020 at 07:50:37PM -0700, yunfan188 wrote: My working computer info as follows: $ uname -a Linux centos-arm 4.18.0-80.7.2.el7.aarch64 #1 SMP Thu Sep 12 16:13:20 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux $ cat /etc/redhat-release CentOS Linux release 7.6.1810 (AltArch)

Actually, I don't know where this kernel is from. What I replied, applies to CentOS 8. I read "4.18.0" and assumed this was a el8 system, but not. Then it may be possible that sctp support is not enabled. Where did you get it?