Hello, I think you need to load "tls" kernel module first. Regards, Alex On Fri, Nov 29, 2019 at 11:37 AM Jeffrey Walton <noloader@xxxxxxxxx> wrote: > > Hi Everyone, > > I'm trying to run through the example at > https://www.kernel.org/doc/html/latest/networking/tls.html#kernel-tls > . > > I'm working on Fedora 31 x86_64 (fully patched). Running my program results in: > > $ ./ktls > setsockopt failed, 2, No such file or directory > > I observed: > > $ cat /proc/sys/net/ipv4/tcp_available_ulp > $ > > Is there a way to enable ULP at boot? Or is this a kernel config > option? Or maybe I am doing something else wrong? > > Below is the sample code. > > Jeff > > ============================== > > #include <stdio.h> > #include <unistd.h> > #include <errno.h> > #include <string.h> > > #include <sys/socket.h> > #include <sys/types.h> > > #include <linux/tls.h> > #include <netinet/ip.h> > #include <netinet/tcp.h> > > int main() > { > int sock = socket(AF_INET, SOCK_STREAM, 0); > if (sock == -1) > { > printf("socket failed, %d, %s\n", errno, strerror(errno)); > return 1; > } > > if (setsockopt(sock, SOL_TCP, TCP_ULP, "tls", sizeof("tls")) == -1 ) > { > printf("setsockopt failed, %d, %s\n", errno, strerror(errno)); > return 1; > } > > close (sock); > return 0; > } > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
