net/smc: replace strncpy with strscpy

JIRA: https://issues.redhat.com/browse/RHEL-99989

commit ae2402b
Author: Pranav Tyagi <pranav.tyagi03@gmail.com>
Date:   Fri Jun 20 15:55:59 2025 +0530

    net/smc: replace strncpy with strscpy

    Replace the deprecated strncpy() with two-argument version of
    strscpy() as the destination is an array
    and should be NUL-terminated.

    Signed-off-by: Pranav Tyagi <pranav.tyagi03@gmail.com>
    Reviewed-by: Simon Horman <horms@kernel.org>
    Link: https://patch.msgid.link/20250620102559.6365-1-pranav.tyagi03@gmail.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Signed-off-by: Mahanta Jambigi <mjambigi@linux.ibm.com>
Signed-off-by: Mete Durlu <mdurlu@redhat.com>

Author: Mete Durlu

net/smc/smc_pnet.c

@@ -370,7 +370,7 @@ static int smc_pnet_add_eth(struct smc_pnettable *pnettable, struct net *net,
 		goto out_put;
 	new_pe->type = SMC_PNET_ETH;
 	memcpy(new_pe->pnet_name, pnet_name, SMC_MAX_PNETID_LEN);
-	strncpy(new_pe->eth_name, eth_name, IFNAMSIZ);
+	strscpy(new_pe->eth_name, eth_name);
 	rc = -EEXIST;
 	new_netdev = true;
 	mutex_lock(&pnettable->lock);