Subject: TCP_ULP option is not working for tls

From: "Kernel.org Bugbot" <[email-masked]>
Date: Thu, 4 May 2023 16:19:29 +0000 (UTC)

sumit.200744 writes via Kernel.org Bugzilla:

TCP socket was created as below
int sfd = socket(AF_INET,SOCK_STREAM,0).

socket connection was established between server and client using accept and connect calls.

To enable TCP_ULP, setsockopt was used as below
Client:
setsockopt(sfd, IPPROTO_TCP, TCP_ULP, "tls", sizeof("tls"));
Server:
setsockopt(nsfd, IPPROTO_TCP, TCP_ULP, "tls", sizeof("tls"));

but setsockopt is returning -1 with error ENOENT - "No such file or directory". Is anything missing for above usage ?

Which kernel version has TLS option enabled which is mentioned in https://www.kernel.org/doc/html/latest/networking/tls.html#kernel-tls ?

View: https://bugzilla.kernel.org/show_bug.cgi?id=217401#c0
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