chelsio/chtls: Fix panic when listen on multiadapter

[ Upstream commit 9819f22 ]

Add the logic to compare net_device returned by ip_dev_find()
with the net_device list in cdev->ports[] array and return
net_device if matched else NULL.

Fixes: 6abde0b ("crypto/chtls: IPv6 support for inline TLS")
Signed-off-by: Venkatesh Ellapu <venkatesh.e@chelsio.com>
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/crypto/chelsio/chtls/chtls_cm.c

@@ -92,11 +92,13 @@ static void chtls_sock_release(struct kref *ref)
 static struct net_device *chtls_find_netdev(struct chtls_dev *cdev,
 					    struct sock *sk)
 {
+	struct adapter *adap = pci_get_drvdata(cdev->pdev);
 	struct net_device *ndev = cdev->ports[0];
 #if IS_ENABLED(CONFIG_IPV6)
 	struct net_device *temp;
 	int addr_type;
 #endif
+	int i;
 
 	switch (sk->sk_family) {
 	case PF_INET:
@@ -127,8 +129,12 @@ static struct net_device *chtls_find_netdev(struct chtls_dev *cdev,
 		return NULL;
 
 	if (is_vlan_dev(ndev))
-		return vlan_dev_real_dev(ndev);
-	return ndev;
+		ndev = vlan_dev_real_dev(ndev);
+
+	for_each_port(adap, i)
+		if (cdev->ports[i] == ndev)
+			return ndev;
+	return NULL;
 }
 
 static void assign_rxopt(struct sock *sk, unsigned int opt)