Bug 217401
| Summary: | TCP_ULP option is not working for tls | ||
|---|---|---|---|
| Product: | Linux | Reporter: | Sumit (sumit.200744) |
| Component: | Kernel | Assignee: | Virtual assignee for kernel bugs (linux-kernel) |
| Status: | RESOLVED DISTRO_KERNEL | ||
| Severity: | normal | CC: | kubakici |
| Priority: | P3 | Flags: | mricon:
bugbot+
|
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 5.15 | Subsystem: | NETWORKING [TLS] |
| Regression: | No | Bisected commit-id: | |
What kernel version is this? I tried it on 5.15.78 where I'm getting the above failure - "No such file or directory for setsockopt. Not sure on which linux kernel this TLS option is introduced. Jakub Kicinski <kuba@kernel.org> replies to comment #2: On Thu, 4 May 2023 16:19:29 +0000 (UTC) Kernel.org Bugbot wrote: > I tried it on 5.15.78 where I'm getting the above failure - "No such > file or directory for setsockopt. Not sure on which linux kernel this > TLS option is introduced. Can you show the output of: modprobe tls cat /proc/sys/net/ipv4/tcp_available_ulp grep CONFIG_TLS /boot/config-* ? (via https://msgid.link/20230504095114.6656e611@kernel.org) Trying it on android platform. Seems TLS is not enabled in kernel # modprobe tls modprobe: No module configuration directories given. # insmod tls insmod: tls: No such file or directory # cat /proc/sys/net/ipv4/tcp_available_ulp # grep CONFIG_TLS /boot/config-* grep: /boot/config-*: No such file or directory Sounds like it. I'm not familiar with the Android kernel but the tls code either needs to be loaded as a module or compiled in, and since /proc/sys/net/ipv4/tcp_available_ulp is empty - neither seems to be the case on your system. |
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 ?