diff options
Diffstat (limited to 'drivers/net/netdevsim/devlink.c')
| -rw-r--r-- | drivers/net/netdevsim/devlink.c | 295 |
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, - ¶ms); - 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, ¶ms); - 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, ¶ms); - 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, - ¶ms); - 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, ¶ms); - 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, ¶ms); - 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; -} |