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path: root/drivers/net/netdevsim/devlink.c
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Diffstat (limited to 'drivers/net/netdevsim/devlink.c')
-rw-r--r--drivers/net/netdevsim/devlink.c295
1 files changed, 0 insertions, 295 deletions
diff --git a/drivers/net/netdevsim/devlink.c b/drivers/net/netdevsim/devlink.c
deleted file mode 100644
index 5135fc371f01..000000000000
--- a/drivers/net/netdevsim/devlink.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- * Copyright (c) 2018 Cumulus Networks. All rights reserved.
- * Copyright (c) 2018 David Ahern <dsa@cumulusnetworks.com>
- *
- * This software is licensed under the GNU General License Version 2,
- * June 1991 as shown in the file COPYING in the top-level directory of this
- * source tree.
- *
- * THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS"
- * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
- * OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
- * THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
- */
-
-#include <linux/device.h>
-#include <net/devlink.h>
-#include <net/netns/generic.h>
-
-#include "netdevsim.h"
-
-static unsigned int nsim_devlink_id;
-
-/* place holder until devlink and namespaces is sorted out */
-static struct net *nsim_devlink_net(struct devlink *devlink)
-{
- return &init_net;
-}
-
-/* IPv4
- */
-static u64 nsim_ipv4_fib_resource_occ_get(void *priv)
-{
- struct net *net = priv;
-
- return nsim_fib_get_val(net, NSIM_RESOURCE_IPV4_FIB, false);
-}
-
-static u64 nsim_ipv4_fib_rules_res_occ_get(void *priv)
-{
- struct net *net = priv;
-
- return nsim_fib_get_val(net, NSIM_RESOURCE_IPV4_FIB_RULES, false);
-}
-
-/* IPv6
- */
-static u64 nsim_ipv6_fib_resource_occ_get(void *priv)
-{
- struct net *net = priv;
-
- return nsim_fib_get_val(net, NSIM_RESOURCE_IPV6_FIB, false);
-}
-
-static u64 nsim_ipv6_fib_rules_res_occ_get(void *priv)
-{
- struct net *net = priv;
-
- return nsim_fib_get_val(net, NSIM_RESOURCE_IPV6_FIB_RULES, false);
-}
-
-static int devlink_resources_register(struct devlink *devlink)
-{
- struct devlink_resource_size_params params = {
- .size_max = (u64)-1,
- .size_granularity = 1,
- .unit = DEVLINK_RESOURCE_UNIT_ENTRY
- };
- struct net *net = nsim_devlink_net(devlink);
- int err;
- u64 n;
-
- /* Resources for IPv4 */
- err = devlink_resource_register(devlink, "IPv4", (u64)-1,
- NSIM_RESOURCE_IPV4,
- DEVLINK_RESOURCE_ID_PARENT_TOP,
- &params);
- if (err) {
- pr_err("Failed to register IPv4 top resource\n");
- goto out;
- }
-
- n = nsim_fib_get_val(net, NSIM_RESOURCE_IPV4_FIB, true);
- err = devlink_resource_register(devlink, "fib", n,
- NSIM_RESOURCE_IPV4_FIB,
- NSIM_RESOURCE_IPV4, &params);
- if (err) {
- pr_err("Failed to register IPv4 FIB resource\n");
- return err;
- }
-
- n = nsim_fib_get_val(net, NSIM_RESOURCE_IPV4_FIB_RULES, true);
- err = devlink_resource_register(devlink, "fib-rules", n,
- NSIM_RESOURCE_IPV4_FIB_RULES,
- NSIM_RESOURCE_IPV4, &params);
- if (err) {
- pr_err("Failed to register IPv4 FIB rules resource\n");
- return err;
- }
-
- /* Resources for IPv6 */
- err = devlink_resource_register(devlink, "IPv6", (u64)-1,
- NSIM_RESOURCE_IPV6,
- DEVLINK_RESOURCE_ID_PARENT_TOP,
- &params);
- if (err) {
- pr_err("Failed to register IPv6 top resource\n");
- goto out;
- }
-
- n = nsim_fib_get_val(net, NSIM_RESOURCE_IPV6_FIB, true);
- err = devlink_resource_register(devlink, "fib", n,
- NSIM_RESOURCE_IPV6_FIB,
- NSIM_RESOURCE_IPV6, &params);
- if (err) {
- pr_err("Failed to register IPv6 FIB resource\n");
- return err;
- }
-
- n = nsim_fib_get_val(net, NSIM_RESOURCE_IPV6_FIB_RULES, true);
- err = devlink_resource_register(devlink, "fib-rules", n,
- NSIM_RESOURCE_IPV6_FIB_RULES,
- NSIM_RESOURCE_IPV6, &params);
- if (err) {
- pr_err("Failed to register IPv6 FIB rules resource\n");
- return err;
- }
-
- devlink_resource_occ_get_register(devlink,
- NSIM_RESOURCE_IPV4_FIB,
- nsim_ipv4_fib_resource_occ_get,
- net);
- devlink_resource_occ_get_register(devlink,
- NSIM_RESOURCE_IPV4_FIB_RULES,
- nsim_ipv4_fib_rules_res_occ_get,
- net);
- devlink_resource_occ_get_register(devlink,
- NSIM_RESOURCE_IPV6_FIB,
- nsim_ipv6_fib_resource_occ_get,
- net);
- devlink_resource_occ_get_register(devlink,
- NSIM_RESOURCE_IPV6_FIB_RULES,
- nsim_ipv6_fib_rules_res_occ_get,
- net);
-out:
- return err;
-}
-
-static int nsim_devlink_reload(struct devlink *devlink,
- struct netlink_ext_ack *extack)
-{
- enum nsim_resource_id res_ids[] = {
- NSIM_RESOURCE_IPV4_FIB, NSIM_RESOURCE_IPV4_FIB_RULES,
- NSIM_RESOURCE_IPV6_FIB, NSIM_RESOURCE_IPV6_FIB_RULES
- };
- struct net *net = nsim_devlink_net(devlink);
- int i;
-
- for (i = 0; i < ARRAY_SIZE(res_ids); ++i) {
- int err;
- u64 val;
-
- err = devlink_resource_size_get(devlink, res_ids[i], &val);
- if (!err) {
- err = nsim_fib_set_max(net, res_ids[i], val, extack);
- if (err)
- return err;
- }
- }
-
- return 0;
-}
-
-static void nsim_devlink_net_reset(struct net *net)
-{
- enum nsim_resource_id res_ids[] = {
- NSIM_RESOURCE_IPV4_FIB, NSIM_RESOURCE_IPV4_FIB_RULES,
- NSIM_RESOURCE_IPV6_FIB, NSIM_RESOURCE_IPV6_FIB_RULES
- };
- int i;
-
- for (i = 0; i < ARRAY_SIZE(res_ids); ++i) {
- if (nsim_fib_set_max(net, res_ids[i], (u64)-1, NULL)) {
- pr_err("Failed to reset limit for resource %u\n",
- res_ids[i]);
- }
- }
-}
-
-static const struct devlink_ops nsim_devlink_ops = {
- .reload = nsim_devlink_reload,
-};
-
-/* once devlink / namespace issues are sorted out
- * this needs to be net in which a devlink instance
- * is to be created. e.g., dev_net(ns->netdev)
- */
-static struct net *nsim_to_net(struct netdevsim *ns)
-{
- return &init_net;
-}
-
-void nsim_devlink_teardown(struct netdevsim *ns)
-{
- if (ns->devlink) {
- struct net *net = nsim_to_net(ns);
- bool *reg_devlink = net_generic(net, nsim_devlink_id);
-
- devlink_resources_unregister(ns->devlink, NULL);
- devlink_unregister(ns->devlink);
- devlink_free(ns->devlink);
- ns->devlink = NULL;
-
- nsim_devlink_net_reset(net);
- *reg_devlink = true;
- }
-}
-
-int nsim_devlink_setup(struct netdevsim *ns)
-{
- struct net *net = nsim_to_net(ns);
- bool *reg_devlink = net_generic(net, nsim_devlink_id);
- struct devlink *devlink;
- int err;
-
- /* only one device per namespace controls devlink */
- if (!*reg_devlink) {
- ns->devlink = NULL;
- return 0;
- }
-
- devlink = devlink_alloc(&nsim_devlink_ops, 0);
- if (!devlink)
- return -ENOMEM;
-
- err = devlink_register(devlink, &ns->dev);
- if (err)
- goto err_devlink_free;
-
- err = devlink_resources_register(devlink);
- if (err)
- goto err_dl_unregister;
-
- ns->devlink = devlink;
-
- *reg_devlink = false;
-
- return 0;
-
-err_dl_unregister:
- devlink_unregister(devlink);
-err_devlink_free:
- devlink_free(devlink);
-
- return err;
-}
-
-/* Initialize per network namespace state */
-static int __net_init nsim_devlink_netns_init(struct net *net)
-{
- bool *reg_devlink = net_generic(net, nsim_devlink_id);
-
- *reg_devlink = true;
-
- return 0;
-}
-
-static struct pernet_operations nsim_devlink_net_ops = {
- .init = nsim_devlink_netns_init,
- .id = &nsim_devlink_id,
- .size = sizeof(bool),
-};
-
-void nsim_devlink_exit(void)
-{
- unregister_pernet_subsys(&nsim_devlink_net_ops);
- nsim_fib_exit();
-}
-
-int nsim_devlink_init(void)
-{
- int err;
-
- err = nsim_fib_init();
- if (err)
- goto err_out;
-
- err = register_pernet_subsys(&nsim_devlink_net_ops);
- if (err)
- nsim_fib_exit();
-
-err_out:
- return err;
-}