qed: Add IP services APIs support

This patch introduces APIs which the NVMeTCP Offload device (qedn)
will use through the paired net-device (qede).
It includes APIs for:
- ipv4/ipv6 routing
- get VLAN from net-device
- TCP ports reservation

Acked-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Nikolay Assa <nassa@marvell.com>
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Omkar Kulkarni <okulkarni@marvell.com>
Signed-off-by: Michal Kalderon <mkalderon@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/qed/qed_nvmetcp_ip_services_if.h

@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
+/*
+ * Copyright 2021 Marvell. All rights reserved.
+ */
+
+#ifndef _QED_IP_SERVICES_IF_H
+#define _QED_IP_SERVICES_IF_H
+
+#include <linux/types.h>
+#include <net/route.h>
+#include <net/ip6_route.h>
+#include <linux/inetdevice.h>
+
+int qed_route_ipv4(struct sockaddr_storage *local_addr,
+		   struct sockaddr_storage *remote_addr,
+		   struct sockaddr *hardware_address,
+		   struct net_device **ndev);
+int qed_route_ipv6(struct sockaddr_storage *local_addr,
+		   struct sockaddr_storage *remote_addr,
+		   struct sockaddr *hardware_address,
+		   struct net_device **ndev);
+void qed_vlan_get_ndev(struct net_device **ndev, u16 *vlan_id);
+struct pci_dev *qed_validate_ndev(struct net_device *ndev);
+void qed_return_tcp_port(struct socket *sock);
+int qed_fetch_tcp_port(struct sockaddr_storage local_ip_addr,
+		       struct socket **sock, u16 *port);
+__be16 qed_get_in_port(struct sockaddr_storage *sa);
+
+#endif /* _QED_IP_SERVICES_IF_H */