From: Guillaume Nault <gnault@redhat.com>
Date: Thu, 21 Apr 2022 14:47:26 +0200
Subject: qed: Remove IP services API.
Patch-mainline: v5.19-rc1
Git-commit: 5e7260712b9a76de19c32f15d667f8f93e573978
References: jsc#PED-1526

qed_nvmetcp_ip_services.c and its corresponding header file were
introduced in commit 806ee7f81a2b ("qed: Add IP services APIs support")
but there's still no users for any of the functions they declare.
Since these files are effectively unused, let's just drop them.

Found by code inspection. Compile-tested only.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/351ac8c847980e22850eb390553f8cc0e1ccd0ce.1650545051.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/qlogic/qed/Makefile                  |    3 
 drivers/net/ethernet/qlogic/qed/qed_nvmetcp_ip_services.c |  238 --------------
 include/linux/qed/qed_nvmetcp_ip_services_if.h            |   29 -
 3 files changed, 1 insertion(+), 269 deletions(-)
 delete mode 100644 drivers/net/ethernet/qlogic/qed/qed_nvmetcp_ip_services.c
 delete mode 100644 include/linux/qed/qed_nvmetcp_ip_services_if.h

--- a/drivers/net/ethernet/qlogic/qed/Makefile
+++ b/drivers/net/ethernet/qlogic/qed/Makefile
@@ -30,8 +30,7 @@ qed-$(CONFIG_QED_OOO) += qed_ooo.o
 
 qed-$(CONFIG_QED_NVMETCP) +=	\
 	qed_nvmetcp.o		\
-	qed_nvmetcp_fw_funcs.o	\
-	qed_nvmetcp_ip_services.o
+	qed_nvmetcp_fw_funcs.o
 
 qed-$(CONFIG_QED_RDMA) +=	\
 	qed_iwarp.o		\
--- a/drivers/net/ethernet/qlogic/qed/qed_nvmetcp_ip_services.c
+++ /dev/null
@@ -1,238 +0,0 @@
-// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
-/*
- * Copyright 2021 Marvell. All rights reserved.
- */
-
-#include <linux/types.h>
-#include <asm/byteorder.h>
-#include <asm/param.h>
-#include <linux/delay.h>
-#include <linux/pci.h>
-#include <linux/dma-mapping.h>
-#include <linux/etherdevice.h>
-#include <linux/kernel.h>
-#include <linux/stddef.h>
-#include <linux/errno.h>
-
-#include <net/tcp.h>
-
-#include <linux/qed/qed_nvmetcp_ip_services_if.h>
-
-#define QED_IP_RESOL_TIMEOUT  4
-
-int qed_route_ipv4(struct sockaddr_storage *local_addr,
-		   struct sockaddr_storage *remote_addr,
-		   struct sockaddr *hardware_address,
-		   struct net_device **ndev)
-{
-	struct neighbour *neigh = NULL;
-	__be32 *loc_ip, *rem_ip;
-	struct rtable *rt;
-	int rc = -ENXIO;
-	int retry;
-
-	loc_ip = &((struct sockaddr_in *)local_addr)->sin_addr.s_addr;
-	rem_ip = &((struct sockaddr_in *)remote_addr)->sin_addr.s_addr;
-	*ndev = NULL;
-	rt = ip_route_output(&init_net, *rem_ip, *loc_ip, 0/*tos*/, 0/*oif*/);
-	if (IS_ERR(rt)) {
-		pr_err("lookup route failed\n");
-		rc = PTR_ERR(rt);
-		goto return_err;
-	}
-
-	neigh = dst_neigh_lookup(&rt->dst, rem_ip);
-	if (!neigh) {
-		rc = -ENOMEM;
-		ip_rt_put(rt);
-		goto return_err;
-	}
-
-	*ndev = rt->dst.dev;
-	ip_rt_put(rt);
-
-	/* If not resolved, kick-off state machine towards resolution */
-	if (!(neigh->nud_state & NUD_VALID))
-		neigh_event_send(neigh, NULL);
-
-	/* query neighbor until resolved or timeout */
-	retry = QED_IP_RESOL_TIMEOUT;
-	while (!(neigh->nud_state & NUD_VALID) && retry > 0) {
-		msleep(1000);
-		retry--;
-	}
-
-	if (neigh->nud_state & NUD_VALID) {
-		/* copy resolved MAC address */
-		neigh_ha_snapshot(hardware_address->sa_data, neigh, *ndev);
-		hardware_address->sa_family = (*ndev)->type;
-		rc = 0;
-	}
-
-	neigh_release(neigh);
-	if (!(*loc_ip)) {
-		*loc_ip = inet_select_addr(*ndev, *rem_ip, RT_SCOPE_UNIVERSE);
-		local_addr->ss_family = AF_INET;
-	}
-
-return_err:
-
-	return rc;
-}
-EXPORT_SYMBOL(qed_route_ipv4);
-
-int qed_route_ipv6(struct sockaddr_storage *local_addr,
-		   struct sockaddr_storage *remote_addr,
-		   struct sockaddr *hardware_address,
-		   struct net_device **ndev)
-{
-	struct neighbour *neigh = NULL;
-	struct dst_entry *dst;
-	struct flowi6 fl6;
-	int rc = -ENXIO;
-	int retry;
-
-	memset(&fl6, 0, sizeof(fl6));
-	fl6.saddr = ((struct sockaddr_in6 *)local_addr)->sin6_addr;
-	fl6.daddr = ((struct sockaddr_in6 *)remote_addr)->sin6_addr;
-	dst = ip6_route_output(&init_net, NULL, &fl6);
-	if (!dst || dst->error) {
-		if (dst) {
-			dst_release(dst);
-			pr_err("lookup route failed %d\n", dst->error);
-		}
-
-		goto out;
-	}
-
-	neigh = dst_neigh_lookup(dst, &fl6.daddr);
-	if (neigh) {
-		*ndev = ip6_dst_idev(dst)->dev;
-
-		/* If not resolved, kick-off state machine towards resolution */
-		if (!(neigh->nud_state & NUD_VALID))
-			neigh_event_send(neigh, NULL);
-
-		/* query neighbor until resolved or timeout */
-		retry = QED_IP_RESOL_TIMEOUT;
-		while (!(neigh->nud_state & NUD_VALID) && retry > 0) {
-			msleep(1000);
-			retry--;
-		}
-
-		if (neigh->nud_state & NUD_VALID) {
-			neigh_ha_snapshot((u8 *)hardware_address->sa_data,
-					  neigh, *ndev);
-			hardware_address->sa_family = (*ndev)->type;
-			rc = 0;
-		}
-
-		neigh_release(neigh);
-
-		if (ipv6_addr_any(&fl6.saddr)) {
-			if (ipv6_dev_get_saddr(dev_net(*ndev), *ndev,
-					       &fl6.daddr, 0, &fl6.saddr)) {
-				pr_err("Unable to find source IP address\n");
-				goto out;
-			}
-
-			local_addr->ss_family = AF_INET6;
-			((struct sockaddr_in6 *)local_addr)->sin6_addr =
-								fl6.saddr;
-		}
-	}
-
-	dst_release(dst);
-
-out:
-
-	return rc;
-}
-EXPORT_SYMBOL(qed_route_ipv6);
-
-void qed_vlan_get_ndev(struct net_device **ndev, u16 *vlan_id)
-{
-	if (is_vlan_dev(*ndev)) {
-		*vlan_id = vlan_dev_vlan_id(*ndev);
-		*ndev = vlan_dev_real_dev(*ndev);
-	}
-}
-EXPORT_SYMBOL(qed_vlan_get_ndev);
-
-struct pci_dev *qed_validate_ndev(struct net_device *ndev)
-{
-	struct net_device *upper;
-	struct pci_dev *pdev;
-
-	for_each_pci_dev(pdev) {
-		if (pdev->driver &&
-		    !strcmp(pdev->driver->name, "qede")) {
-			upper = pci_get_drvdata(pdev);
-			if (upper->ifindex == ndev->ifindex)
-				return pdev;
-		}
-	}
-
-	return NULL;
-}
-EXPORT_SYMBOL(qed_validate_ndev);
-
-__be16 qed_get_in_port(struct sockaddr_storage *sa)
-{
-	return sa->ss_family == AF_INET
-		? ((struct sockaddr_in *)sa)->sin_port
-		: ((struct sockaddr_in6 *)sa)->sin6_port;
-}
-EXPORT_SYMBOL(qed_get_in_port);
-
-int qed_fetch_tcp_port(struct sockaddr_storage local_ip_addr,
-		       struct socket **sock, u16 *port)
-{
-	struct sockaddr_storage sa;
-	int rc = 0;
-
-	rc = sock_create(local_ip_addr.ss_family, SOCK_STREAM, IPPROTO_TCP,
-			 sock);
-	if (rc) {
-		pr_warn("failed to create socket: %d\n", rc);
-		goto err;
-	}
-
-	(*sock)->sk->sk_allocation = GFP_KERNEL;
-	sk_set_memalloc((*sock)->sk);
-
-	rc = kernel_bind(*sock, (struct sockaddr *)&local_ip_addr,
-			 sizeof(local_ip_addr));
-
-	if (rc) {
-		pr_warn("failed to bind socket: %d\n", rc);
-		goto err_sock;
-	}
-
-	rc = kernel_getsockname(*sock, (struct sockaddr *)&sa);
-	if (rc < 0) {
-		pr_warn("getsockname() failed: %d\n", rc);
-		goto err_sock;
-	}
-
-	*port = ntohs(qed_get_in_port(&sa));
-
-	return 0;
-
-err_sock:
-	sock_release(*sock);
-	sock = NULL;
-err:
-
-	return rc;
-}
-EXPORT_SYMBOL(qed_fetch_tcp_port);
-
-void qed_return_tcp_port(struct socket *sock)
-{
-	if (sock && sock->sk) {
-		tcp_set_state(sock->sk, TCP_CLOSE);
-		sock_release(sock);
-	}
-}
-EXPORT_SYMBOL(qed_return_tcp_port);
--- a/include/linux/qed/qed_nvmetcp_ip_services_if.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* 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 */