13d249d4cSJiri Pirko /* 23d249d4cSJiri Pirko * net/drivers/team/team.c - Network team device driver 33d249d4cSJiri Pirko * Copyright (c) 2011 Jiri Pirko <jpirko@redhat.com> 43d249d4cSJiri Pirko * 53d249d4cSJiri Pirko * This program is free software; you can redistribute it and/or modify 63d249d4cSJiri Pirko * it under the terms of the GNU General Public License as published by 73d249d4cSJiri Pirko * the Free Software Foundation; either version 2 of the License, or 83d249d4cSJiri Pirko * (at your option) any later version. 93d249d4cSJiri Pirko */ 103d249d4cSJiri Pirko 113d249d4cSJiri Pirko #include <linux/kernel.h> 123d249d4cSJiri Pirko #include <linux/types.h> 133d249d4cSJiri Pirko #include <linux/module.h> 143d249d4cSJiri Pirko #include <linux/init.h> 153d249d4cSJiri Pirko #include <linux/slab.h> 163d249d4cSJiri Pirko #include <linux/rcupdate.h> 173d249d4cSJiri Pirko #include <linux/errno.h> 183d249d4cSJiri Pirko #include <linux/ctype.h> 193d249d4cSJiri Pirko #include <linux/notifier.h> 203d249d4cSJiri Pirko #include <linux/netdevice.h> 213d249d4cSJiri Pirko #include <linux/if_arp.h> 223d249d4cSJiri Pirko #include <linux/socket.h> 233d249d4cSJiri Pirko #include <linux/etherdevice.h> 243d249d4cSJiri Pirko #include <linux/rtnetlink.h> 253d249d4cSJiri Pirko #include <net/rtnetlink.h> 263d249d4cSJiri Pirko #include <net/genetlink.h> 273d249d4cSJiri Pirko #include <net/netlink.h> 283d249d4cSJiri Pirko #include <linux/if_team.h> 293d249d4cSJiri Pirko 303d249d4cSJiri Pirko #define DRV_NAME "team" 313d249d4cSJiri Pirko 323d249d4cSJiri Pirko 333d249d4cSJiri Pirko /********** 343d249d4cSJiri Pirko * Helpers 353d249d4cSJiri Pirko **********/ 363d249d4cSJiri Pirko 373d249d4cSJiri Pirko #define team_port_exists(dev) (dev->priv_flags & IFF_TEAM_PORT) 383d249d4cSJiri Pirko 393d249d4cSJiri Pirko static struct team_port *team_port_get_rcu(const struct net_device *dev) 403d249d4cSJiri Pirko { 413d249d4cSJiri Pirko struct team_port *port = rcu_dereference(dev->rx_handler_data); 423d249d4cSJiri Pirko 433d249d4cSJiri Pirko return team_port_exists(dev) ? port : NULL; 443d249d4cSJiri Pirko } 453d249d4cSJiri Pirko 463d249d4cSJiri Pirko static struct team_port *team_port_get_rtnl(const struct net_device *dev) 473d249d4cSJiri Pirko { 483d249d4cSJiri Pirko struct team_port *port = rtnl_dereference(dev->rx_handler_data); 493d249d4cSJiri Pirko 503d249d4cSJiri Pirko return team_port_exists(dev) ? port : NULL; 513d249d4cSJiri Pirko } 523d249d4cSJiri Pirko 533d249d4cSJiri Pirko /* 543d249d4cSJiri Pirko * Since the ability to change mac address for open port device is tested in 553d249d4cSJiri Pirko * team_port_add, this function can be called without control of return value 563d249d4cSJiri Pirko */ 573d249d4cSJiri Pirko static int __set_port_mac(struct net_device *port_dev, 583d249d4cSJiri Pirko const unsigned char *dev_addr) 593d249d4cSJiri Pirko { 603d249d4cSJiri Pirko struct sockaddr addr; 613d249d4cSJiri Pirko 623d249d4cSJiri Pirko memcpy(addr.sa_data, dev_addr, ETH_ALEN); 633d249d4cSJiri Pirko addr.sa_family = ARPHRD_ETHER; 643d249d4cSJiri Pirko return dev_set_mac_address(port_dev, &addr); 653d249d4cSJiri Pirko } 663d249d4cSJiri Pirko 673d249d4cSJiri Pirko int team_port_set_orig_mac(struct team_port *port) 683d249d4cSJiri Pirko { 693d249d4cSJiri Pirko return __set_port_mac(port->dev, port->orig.dev_addr); 703d249d4cSJiri Pirko } 713d249d4cSJiri Pirko 723d249d4cSJiri Pirko int team_port_set_team_mac(struct team_port *port) 733d249d4cSJiri Pirko { 743d249d4cSJiri Pirko return __set_port_mac(port->dev, port->team->dev->dev_addr); 753d249d4cSJiri Pirko } 763d249d4cSJiri Pirko EXPORT_SYMBOL(team_port_set_team_mac); 773d249d4cSJiri Pirko 783d249d4cSJiri Pirko 793d249d4cSJiri Pirko /******************* 803d249d4cSJiri Pirko * Options handling 813d249d4cSJiri Pirko *******************/ 823d249d4cSJiri Pirko 83358b8382SJiri Pirko struct team_option *__team_find_option(struct team *team, const char *opt_name) 84358b8382SJiri Pirko { 85358b8382SJiri Pirko struct team_option *option; 86358b8382SJiri Pirko 87358b8382SJiri Pirko list_for_each_entry(option, &team->option_list, list) { 88358b8382SJiri Pirko if (strcmp(option->name, opt_name) == 0) 89358b8382SJiri Pirko return option; 90358b8382SJiri Pirko } 91358b8382SJiri Pirko return NULL; 92358b8382SJiri Pirko } 93358b8382SJiri Pirko 94358b8382SJiri Pirko int team_options_register(struct team *team, 95358b8382SJiri Pirko const struct team_option *option, 963d249d4cSJiri Pirko size_t option_count) 973d249d4cSJiri Pirko { 983d249d4cSJiri Pirko int i; 992bba19ffSJiri Pirko struct team_option **dst_opts; 100358b8382SJiri Pirko int err; 1013d249d4cSJiri Pirko 1022bba19ffSJiri Pirko dst_opts = kzalloc(sizeof(struct team_option *) * option_count, 1032bba19ffSJiri Pirko GFP_KERNEL); 1042bba19ffSJiri Pirko if (!dst_opts) 1052bba19ffSJiri Pirko return -ENOMEM; 106358b8382SJiri Pirko for (i = 0; i < option_count; i++, option++) { 107358b8382SJiri Pirko if (__team_find_option(team, option->name)) { 108358b8382SJiri Pirko err = -EEXIST; 109358b8382SJiri Pirko goto rollback; 1103d249d4cSJiri Pirko } 111f8a15af0SJiri Pirko dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL); 112f8a15af0SJiri Pirko if (!dst_opts[i]) { 113358b8382SJiri Pirko err = -ENOMEM; 114358b8382SJiri Pirko goto rollback; 115358b8382SJiri Pirko } 116358b8382SJiri Pirko } 117358b8382SJiri Pirko 118358b8382SJiri Pirko for (i = 0; i < option_count; i++) 119358b8382SJiri Pirko list_add_tail(&dst_opts[i]->list, &team->option_list); 120358b8382SJiri Pirko 1212bba19ffSJiri Pirko kfree(dst_opts); 122358b8382SJiri Pirko return 0; 123358b8382SJiri Pirko 124358b8382SJiri Pirko rollback: 125358b8382SJiri Pirko for (i = 0; i < option_count; i++) 126358b8382SJiri Pirko kfree(dst_opts[i]); 127358b8382SJiri Pirko 1282bba19ffSJiri Pirko kfree(dst_opts); 129358b8382SJiri Pirko return err; 130358b8382SJiri Pirko } 131358b8382SJiri Pirko 1323d249d4cSJiri Pirko EXPORT_SYMBOL(team_options_register); 1333d249d4cSJiri Pirko 1343d249d4cSJiri Pirko static void __team_options_change_check(struct team *team, 1353d249d4cSJiri Pirko struct team_option *changed_option); 1363d249d4cSJiri Pirko 1373d249d4cSJiri Pirko static void __team_options_unregister(struct team *team, 138358b8382SJiri Pirko const struct team_option *option, 1393d249d4cSJiri Pirko size_t option_count) 1403d249d4cSJiri Pirko { 1413d249d4cSJiri Pirko int i; 1423d249d4cSJiri Pirko 143358b8382SJiri Pirko for (i = 0; i < option_count; i++, option++) { 144358b8382SJiri Pirko struct team_option *del_opt; 145358b8382SJiri Pirko 146358b8382SJiri Pirko del_opt = __team_find_option(team, option->name); 147358b8382SJiri Pirko if (del_opt) { 148358b8382SJiri Pirko list_del(&del_opt->list); 149358b8382SJiri Pirko kfree(del_opt); 150358b8382SJiri Pirko } 151358b8382SJiri Pirko } 1523d249d4cSJiri Pirko } 1533d249d4cSJiri Pirko 154358b8382SJiri Pirko void team_options_unregister(struct team *team, 155358b8382SJiri Pirko const struct team_option *option, 1563d249d4cSJiri Pirko size_t option_count) 1573d249d4cSJiri Pirko { 1583d249d4cSJiri Pirko __team_options_unregister(team, option, option_count); 1593d249d4cSJiri Pirko __team_options_change_check(team, NULL); 1603d249d4cSJiri Pirko } 1613d249d4cSJiri Pirko EXPORT_SYMBOL(team_options_unregister); 1623d249d4cSJiri Pirko 1633d249d4cSJiri Pirko static int team_option_get(struct team *team, struct team_option *option, 1643d249d4cSJiri Pirko void *arg) 1653d249d4cSJiri Pirko { 1663d249d4cSJiri Pirko return option->getter(team, arg); 1673d249d4cSJiri Pirko } 1683d249d4cSJiri Pirko 1693d249d4cSJiri Pirko static int team_option_set(struct team *team, struct team_option *option, 1703d249d4cSJiri Pirko void *arg) 1713d249d4cSJiri Pirko { 1723d249d4cSJiri Pirko int err; 1733d249d4cSJiri Pirko 1743d249d4cSJiri Pirko err = option->setter(team, arg); 1753d249d4cSJiri Pirko if (err) 1763d249d4cSJiri Pirko return err; 1773d249d4cSJiri Pirko 1783d249d4cSJiri Pirko __team_options_change_check(team, option); 1793d249d4cSJiri Pirko return err; 1803d249d4cSJiri Pirko } 1813d249d4cSJiri Pirko 1823d249d4cSJiri Pirko /**************** 1833d249d4cSJiri Pirko * Mode handling 1843d249d4cSJiri Pirko ****************/ 1853d249d4cSJiri Pirko 1863d249d4cSJiri Pirko static LIST_HEAD(mode_list); 1873d249d4cSJiri Pirko static DEFINE_SPINLOCK(mode_list_lock); 1883d249d4cSJiri Pirko 1893d249d4cSJiri Pirko static struct team_mode *__find_mode(const char *kind) 1903d249d4cSJiri Pirko { 1913d249d4cSJiri Pirko struct team_mode *mode; 1923d249d4cSJiri Pirko 1933d249d4cSJiri Pirko list_for_each_entry(mode, &mode_list, list) { 1943d249d4cSJiri Pirko if (strcmp(mode->kind, kind) == 0) 1953d249d4cSJiri Pirko return mode; 1963d249d4cSJiri Pirko } 1973d249d4cSJiri Pirko return NULL; 1983d249d4cSJiri Pirko } 1993d249d4cSJiri Pirko 2003d249d4cSJiri Pirko static bool is_good_mode_name(const char *name) 2013d249d4cSJiri Pirko { 2023d249d4cSJiri Pirko while (*name != '\0') { 2033d249d4cSJiri Pirko if (!isalpha(*name) && !isdigit(*name) && *name != '_') 2043d249d4cSJiri Pirko return false; 2053d249d4cSJiri Pirko name++; 2063d249d4cSJiri Pirko } 2073d249d4cSJiri Pirko return true; 2083d249d4cSJiri Pirko } 2093d249d4cSJiri Pirko 2103d249d4cSJiri Pirko int team_mode_register(struct team_mode *mode) 2113d249d4cSJiri Pirko { 2123d249d4cSJiri Pirko int err = 0; 2133d249d4cSJiri Pirko 2143d249d4cSJiri Pirko if (!is_good_mode_name(mode->kind) || 2153d249d4cSJiri Pirko mode->priv_size > TEAM_MODE_PRIV_SIZE) 2163d249d4cSJiri Pirko return -EINVAL; 2173d249d4cSJiri Pirko spin_lock(&mode_list_lock); 2183d249d4cSJiri Pirko if (__find_mode(mode->kind)) { 2193d249d4cSJiri Pirko err = -EEXIST; 2203d249d4cSJiri Pirko goto unlock; 2213d249d4cSJiri Pirko } 2223d249d4cSJiri Pirko list_add_tail(&mode->list, &mode_list); 2233d249d4cSJiri Pirko unlock: 2243d249d4cSJiri Pirko spin_unlock(&mode_list_lock); 2253d249d4cSJiri Pirko return err; 2263d249d4cSJiri Pirko } 2273d249d4cSJiri Pirko EXPORT_SYMBOL(team_mode_register); 2283d249d4cSJiri Pirko 2293d249d4cSJiri Pirko int team_mode_unregister(struct team_mode *mode) 2303d249d4cSJiri Pirko { 2313d249d4cSJiri Pirko spin_lock(&mode_list_lock); 2323d249d4cSJiri Pirko list_del_init(&mode->list); 2333d249d4cSJiri Pirko spin_unlock(&mode_list_lock); 2343d249d4cSJiri Pirko return 0; 2353d249d4cSJiri Pirko } 2363d249d4cSJiri Pirko EXPORT_SYMBOL(team_mode_unregister); 2373d249d4cSJiri Pirko 2383d249d4cSJiri Pirko static struct team_mode *team_mode_get(const char *kind) 2393d249d4cSJiri Pirko { 2403d249d4cSJiri Pirko struct team_mode *mode; 2413d249d4cSJiri Pirko 2423d249d4cSJiri Pirko spin_lock(&mode_list_lock); 2433d249d4cSJiri Pirko mode = __find_mode(kind); 2443d249d4cSJiri Pirko if (!mode) { 2453d249d4cSJiri Pirko spin_unlock(&mode_list_lock); 2463d249d4cSJiri Pirko request_module("team-mode-%s", kind); 2473d249d4cSJiri Pirko spin_lock(&mode_list_lock); 2483d249d4cSJiri Pirko mode = __find_mode(kind); 2493d249d4cSJiri Pirko } 2503d249d4cSJiri Pirko if (mode) 2513d249d4cSJiri Pirko if (!try_module_get(mode->owner)) 2523d249d4cSJiri Pirko mode = NULL; 2533d249d4cSJiri Pirko 2543d249d4cSJiri Pirko spin_unlock(&mode_list_lock); 2553d249d4cSJiri Pirko return mode; 2563d249d4cSJiri Pirko } 2573d249d4cSJiri Pirko 2583d249d4cSJiri Pirko static void team_mode_put(const struct team_mode *mode) 2593d249d4cSJiri Pirko { 2603d249d4cSJiri Pirko module_put(mode->owner); 2613d249d4cSJiri Pirko } 2623d249d4cSJiri Pirko 2633d249d4cSJiri Pirko static bool team_dummy_transmit(struct team *team, struct sk_buff *skb) 2643d249d4cSJiri Pirko { 2653d249d4cSJiri Pirko dev_kfree_skb_any(skb); 2663d249d4cSJiri Pirko return false; 2673d249d4cSJiri Pirko } 2683d249d4cSJiri Pirko 2693d249d4cSJiri Pirko rx_handler_result_t team_dummy_receive(struct team *team, 2703d249d4cSJiri Pirko struct team_port *port, 2713d249d4cSJiri Pirko struct sk_buff *skb) 2723d249d4cSJiri Pirko { 2733d249d4cSJiri Pirko return RX_HANDLER_ANOTHER; 2743d249d4cSJiri Pirko } 2753d249d4cSJiri Pirko 2763d249d4cSJiri Pirko static void team_adjust_ops(struct team *team) 2773d249d4cSJiri Pirko { 2783d249d4cSJiri Pirko /* 2793d249d4cSJiri Pirko * To avoid checks in rx/tx skb paths, ensure here that non-null and 2803d249d4cSJiri Pirko * correct ops are always set. 2813d249d4cSJiri Pirko */ 2823d249d4cSJiri Pirko 2833d249d4cSJiri Pirko if (list_empty(&team->port_list) || 2843d249d4cSJiri Pirko !team->mode || !team->mode->ops->transmit) 2853d249d4cSJiri Pirko team->ops.transmit = team_dummy_transmit; 2863d249d4cSJiri Pirko else 2873d249d4cSJiri Pirko team->ops.transmit = team->mode->ops->transmit; 2883d249d4cSJiri Pirko 2893d249d4cSJiri Pirko if (list_empty(&team->port_list) || 2903d249d4cSJiri Pirko !team->mode || !team->mode->ops->receive) 2913d249d4cSJiri Pirko team->ops.receive = team_dummy_receive; 2923d249d4cSJiri Pirko else 2933d249d4cSJiri Pirko team->ops.receive = team->mode->ops->receive; 2943d249d4cSJiri Pirko } 2953d249d4cSJiri Pirko 2963d249d4cSJiri Pirko /* 2973d249d4cSJiri Pirko * We can benefit from the fact that it's ensured no port is present 2983d249d4cSJiri Pirko * at the time of mode change. Therefore no packets are in fly so there's no 2993d249d4cSJiri Pirko * need to set mode operations in any special way. 3003d249d4cSJiri Pirko */ 3013d249d4cSJiri Pirko static int __team_change_mode(struct team *team, 3023d249d4cSJiri Pirko const struct team_mode *new_mode) 3033d249d4cSJiri Pirko { 3043d249d4cSJiri Pirko /* Check if mode was previously set and do cleanup if so */ 3053d249d4cSJiri Pirko if (team->mode) { 3063d249d4cSJiri Pirko void (*exit_op)(struct team *team) = team->ops.exit; 3073d249d4cSJiri Pirko 3083d249d4cSJiri Pirko /* Clear ops area so no callback is called any longer */ 3093d249d4cSJiri Pirko memset(&team->ops, 0, sizeof(struct team_mode_ops)); 3103d249d4cSJiri Pirko team_adjust_ops(team); 3113d249d4cSJiri Pirko 3123d249d4cSJiri Pirko if (exit_op) 3133d249d4cSJiri Pirko exit_op(team); 3143d249d4cSJiri Pirko team_mode_put(team->mode); 3153d249d4cSJiri Pirko team->mode = NULL; 3163d249d4cSJiri Pirko /* zero private data area */ 3173d249d4cSJiri Pirko memset(&team->mode_priv, 0, 3183d249d4cSJiri Pirko sizeof(struct team) - offsetof(struct team, mode_priv)); 3193d249d4cSJiri Pirko } 3203d249d4cSJiri Pirko 3213d249d4cSJiri Pirko if (!new_mode) 3223d249d4cSJiri Pirko return 0; 3233d249d4cSJiri Pirko 3243d249d4cSJiri Pirko if (new_mode->ops->init) { 3253d249d4cSJiri Pirko int err; 3263d249d4cSJiri Pirko 3273d249d4cSJiri Pirko err = new_mode->ops->init(team); 3283d249d4cSJiri Pirko if (err) 3293d249d4cSJiri Pirko return err; 3303d249d4cSJiri Pirko } 3313d249d4cSJiri Pirko 3323d249d4cSJiri Pirko team->mode = new_mode; 3333d249d4cSJiri Pirko memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops)); 3343d249d4cSJiri Pirko team_adjust_ops(team); 3353d249d4cSJiri Pirko 3363d249d4cSJiri Pirko return 0; 3373d249d4cSJiri Pirko } 3383d249d4cSJiri Pirko 3393d249d4cSJiri Pirko static int team_change_mode(struct team *team, const char *kind) 3403d249d4cSJiri Pirko { 3413d249d4cSJiri Pirko struct team_mode *new_mode; 3423d249d4cSJiri Pirko struct net_device *dev = team->dev; 3433d249d4cSJiri Pirko int err; 3443d249d4cSJiri Pirko 3453d249d4cSJiri Pirko if (!list_empty(&team->port_list)) { 3463d249d4cSJiri Pirko netdev_err(dev, "No ports can be present during mode change\n"); 3473d249d4cSJiri Pirko return -EBUSY; 3483d249d4cSJiri Pirko } 3493d249d4cSJiri Pirko 3503d249d4cSJiri Pirko if (team->mode && strcmp(team->mode->kind, kind) == 0) { 3513d249d4cSJiri Pirko netdev_err(dev, "Unable to change to the same mode the team is in\n"); 3523d249d4cSJiri Pirko return -EINVAL; 3533d249d4cSJiri Pirko } 3543d249d4cSJiri Pirko 3553d249d4cSJiri Pirko new_mode = team_mode_get(kind); 3563d249d4cSJiri Pirko if (!new_mode) { 3573d249d4cSJiri Pirko netdev_err(dev, "Mode \"%s\" not found\n", kind); 3583d249d4cSJiri Pirko return -EINVAL; 3593d249d4cSJiri Pirko } 3603d249d4cSJiri Pirko 3613d249d4cSJiri Pirko err = __team_change_mode(team, new_mode); 3623d249d4cSJiri Pirko if (err) { 3633d249d4cSJiri Pirko netdev_err(dev, "Failed to change to mode \"%s\"\n", kind); 3643d249d4cSJiri Pirko team_mode_put(new_mode); 3653d249d4cSJiri Pirko return err; 3663d249d4cSJiri Pirko } 3673d249d4cSJiri Pirko 3683d249d4cSJiri Pirko netdev_info(dev, "Mode changed to \"%s\"\n", kind); 3693d249d4cSJiri Pirko return 0; 3703d249d4cSJiri Pirko } 3713d249d4cSJiri Pirko 3723d249d4cSJiri Pirko 3733d249d4cSJiri Pirko /************************ 3743d249d4cSJiri Pirko * Rx path frame handler 3753d249d4cSJiri Pirko ************************/ 3763d249d4cSJiri Pirko 3773d249d4cSJiri Pirko /* note: already called with rcu_read_lock */ 3783d249d4cSJiri Pirko static rx_handler_result_t team_handle_frame(struct sk_buff **pskb) 3793d249d4cSJiri Pirko { 3803d249d4cSJiri Pirko struct sk_buff *skb = *pskb; 3813d249d4cSJiri Pirko struct team_port *port; 3823d249d4cSJiri Pirko struct team *team; 3833d249d4cSJiri Pirko rx_handler_result_t res; 3843d249d4cSJiri Pirko 3853d249d4cSJiri Pirko skb = skb_share_check(skb, GFP_ATOMIC); 3863d249d4cSJiri Pirko if (!skb) 3873d249d4cSJiri Pirko return RX_HANDLER_CONSUMED; 3883d249d4cSJiri Pirko 3893d249d4cSJiri Pirko *pskb = skb; 3903d249d4cSJiri Pirko 3913d249d4cSJiri Pirko port = team_port_get_rcu(skb->dev); 3923d249d4cSJiri Pirko team = port->team; 3933d249d4cSJiri Pirko 3943d249d4cSJiri Pirko res = team->ops.receive(team, port, skb); 3953d249d4cSJiri Pirko if (res == RX_HANDLER_ANOTHER) { 3963d249d4cSJiri Pirko struct team_pcpu_stats *pcpu_stats; 3973d249d4cSJiri Pirko 3983d249d4cSJiri Pirko pcpu_stats = this_cpu_ptr(team->pcpu_stats); 3993d249d4cSJiri Pirko u64_stats_update_begin(&pcpu_stats->syncp); 4003d249d4cSJiri Pirko pcpu_stats->rx_packets++; 4013d249d4cSJiri Pirko pcpu_stats->rx_bytes += skb->len; 4023d249d4cSJiri Pirko if (skb->pkt_type == PACKET_MULTICAST) 4033d249d4cSJiri Pirko pcpu_stats->rx_multicast++; 4043d249d4cSJiri Pirko u64_stats_update_end(&pcpu_stats->syncp); 4053d249d4cSJiri Pirko 4063d249d4cSJiri Pirko skb->dev = team->dev; 4073d249d4cSJiri Pirko } else { 4083d249d4cSJiri Pirko this_cpu_inc(team->pcpu_stats->rx_dropped); 4093d249d4cSJiri Pirko } 4103d249d4cSJiri Pirko 4113d249d4cSJiri Pirko return res; 4123d249d4cSJiri Pirko } 4133d249d4cSJiri Pirko 4143d249d4cSJiri Pirko 4153d249d4cSJiri Pirko /**************** 4163d249d4cSJiri Pirko * Port handling 4173d249d4cSJiri Pirko ****************/ 4183d249d4cSJiri Pirko 4193d249d4cSJiri Pirko static bool team_port_find(const struct team *team, 4203d249d4cSJiri Pirko const struct team_port *port) 4213d249d4cSJiri Pirko { 4223d249d4cSJiri Pirko struct team_port *cur; 4233d249d4cSJiri Pirko 4243d249d4cSJiri Pirko list_for_each_entry(cur, &team->port_list, list) 4253d249d4cSJiri Pirko if (cur == port) 4263d249d4cSJiri Pirko return true; 4273d249d4cSJiri Pirko return false; 4283d249d4cSJiri Pirko } 4293d249d4cSJiri Pirko 4303d249d4cSJiri Pirko /* 4313d249d4cSJiri Pirko * Add/delete port to the team port list. Write guarded by rtnl_lock. 4323d249d4cSJiri Pirko * Takes care of correct port->index setup (might be racy). 4333d249d4cSJiri Pirko */ 4343d249d4cSJiri Pirko static void team_port_list_add_port(struct team *team, 4353d249d4cSJiri Pirko struct team_port *port) 4363d249d4cSJiri Pirko { 4373d249d4cSJiri Pirko port->index = team->port_count++; 4383d249d4cSJiri Pirko hlist_add_head_rcu(&port->hlist, 4393d249d4cSJiri Pirko team_port_index_hash(team, port->index)); 4403d249d4cSJiri Pirko list_add_tail_rcu(&port->list, &team->port_list); 4413d249d4cSJiri Pirko } 4423d249d4cSJiri Pirko 4433d249d4cSJiri Pirko static void __reconstruct_port_hlist(struct team *team, int rm_index) 4443d249d4cSJiri Pirko { 4453d249d4cSJiri Pirko int i; 4463d249d4cSJiri Pirko struct team_port *port; 4473d249d4cSJiri Pirko 4483d249d4cSJiri Pirko for (i = rm_index + 1; i < team->port_count; i++) { 4493d249d4cSJiri Pirko port = team_get_port_by_index(team, i); 4503d249d4cSJiri Pirko hlist_del_rcu(&port->hlist); 4513d249d4cSJiri Pirko port->index--; 4523d249d4cSJiri Pirko hlist_add_head_rcu(&port->hlist, 4533d249d4cSJiri Pirko team_port_index_hash(team, port->index)); 4543d249d4cSJiri Pirko } 4553d249d4cSJiri Pirko } 4563d249d4cSJiri Pirko 4573d249d4cSJiri Pirko static void team_port_list_del_port(struct team *team, 4583d249d4cSJiri Pirko struct team_port *port) 4593d249d4cSJiri Pirko { 4603d249d4cSJiri Pirko int rm_index = port->index; 4613d249d4cSJiri Pirko 4623d249d4cSJiri Pirko hlist_del_rcu(&port->hlist); 4633d249d4cSJiri Pirko list_del_rcu(&port->list); 4643d249d4cSJiri Pirko __reconstruct_port_hlist(team, rm_index); 4653d249d4cSJiri Pirko team->port_count--; 4663d249d4cSJiri Pirko } 4673d249d4cSJiri Pirko 4683d249d4cSJiri Pirko #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \ 4693d249d4cSJiri Pirko NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ 4703d249d4cSJiri Pirko NETIF_F_HIGHDMA | NETIF_F_LRO) 4713d249d4cSJiri Pirko 4723d249d4cSJiri Pirko static void __team_compute_features(struct team *team) 4733d249d4cSJiri Pirko { 4743d249d4cSJiri Pirko struct team_port *port; 4753d249d4cSJiri Pirko u32 vlan_features = TEAM_VLAN_FEATURES; 4763d249d4cSJiri Pirko unsigned short max_hard_header_len = ETH_HLEN; 4773d249d4cSJiri Pirko 4783d249d4cSJiri Pirko list_for_each_entry(port, &team->port_list, list) { 4793d249d4cSJiri Pirko vlan_features = netdev_increment_features(vlan_features, 4803d249d4cSJiri Pirko port->dev->vlan_features, 4813d249d4cSJiri Pirko TEAM_VLAN_FEATURES); 4823d249d4cSJiri Pirko 4833d249d4cSJiri Pirko if (port->dev->hard_header_len > max_hard_header_len) 4843d249d4cSJiri Pirko max_hard_header_len = port->dev->hard_header_len; 4853d249d4cSJiri Pirko } 4863d249d4cSJiri Pirko 4873d249d4cSJiri Pirko team->dev->vlan_features = vlan_features; 4883d249d4cSJiri Pirko team->dev->hard_header_len = max_hard_header_len; 4893d249d4cSJiri Pirko 4903d249d4cSJiri Pirko netdev_change_features(team->dev); 4913d249d4cSJiri Pirko } 4923d249d4cSJiri Pirko 4933d249d4cSJiri Pirko static void team_compute_features(struct team *team) 4943d249d4cSJiri Pirko { 49561dc3461SJiri Pirko mutex_lock(&team->lock); 4963d249d4cSJiri Pirko __team_compute_features(team); 49761dc3461SJiri Pirko mutex_unlock(&team->lock); 4983d249d4cSJiri Pirko } 4993d249d4cSJiri Pirko 5003d249d4cSJiri Pirko static int team_port_enter(struct team *team, struct team_port *port) 5013d249d4cSJiri Pirko { 5023d249d4cSJiri Pirko int err = 0; 5033d249d4cSJiri Pirko 5043d249d4cSJiri Pirko dev_hold(team->dev); 5053d249d4cSJiri Pirko port->dev->priv_flags |= IFF_TEAM_PORT; 5063d249d4cSJiri Pirko if (team->ops.port_enter) { 5073d249d4cSJiri Pirko err = team->ops.port_enter(team, port); 5083d249d4cSJiri Pirko if (err) { 5093d249d4cSJiri Pirko netdev_err(team->dev, "Device %s failed to enter team mode\n", 5103d249d4cSJiri Pirko port->dev->name); 5113d249d4cSJiri Pirko goto err_port_enter; 5123d249d4cSJiri Pirko } 5133d249d4cSJiri Pirko } 5143d249d4cSJiri Pirko 5153d249d4cSJiri Pirko return 0; 5163d249d4cSJiri Pirko 5173d249d4cSJiri Pirko err_port_enter: 5183d249d4cSJiri Pirko port->dev->priv_flags &= ~IFF_TEAM_PORT; 5193d249d4cSJiri Pirko dev_put(team->dev); 5203d249d4cSJiri Pirko 5213d249d4cSJiri Pirko return err; 5223d249d4cSJiri Pirko } 5233d249d4cSJiri Pirko 5243d249d4cSJiri Pirko static void team_port_leave(struct team *team, struct team_port *port) 5253d249d4cSJiri Pirko { 5263d249d4cSJiri Pirko if (team->ops.port_leave) 5273d249d4cSJiri Pirko team->ops.port_leave(team, port); 5283d249d4cSJiri Pirko port->dev->priv_flags &= ~IFF_TEAM_PORT; 5293d249d4cSJiri Pirko dev_put(team->dev); 5303d249d4cSJiri Pirko } 5313d249d4cSJiri Pirko 5323d249d4cSJiri Pirko static void __team_port_change_check(struct team_port *port, bool linkup); 5333d249d4cSJiri Pirko 5343d249d4cSJiri Pirko static int team_port_add(struct team *team, struct net_device *port_dev) 5353d249d4cSJiri Pirko { 5363d249d4cSJiri Pirko struct net_device *dev = team->dev; 5373d249d4cSJiri Pirko struct team_port *port; 5383d249d4cSJiri Pirko char *portname = port_dev->name; 5393d249d4cSJiri Pirko int err; 5403d249d4cSJiri Pirko 5413d249d4cSJiri Pirko if (port_dev->flags & IFF_LOOPBACK || 5423d249d4cSJiri Pirko port_dev->type != ARPHRD_ETHER) { 5433d249d4cSJiri Pirko netdev_err(dev, "Device %s is of an unsupported type\n", 5443d249d4cSJiri Pirko portname); 5453d249d4cSJiri Pirko return -EINVAL; 5463d249d4cSJiri Pirko } 5473d249d4cSJiri Pirko 5483d249d4cSJiri Pirko if (team_port_exists(port_dev)) { 5493d249d4cSJiri Pirko netdev_err(dev, "Device %s is already a port " 5503d249d4cSJiri Pirko "of a team device\n", portname); 5513d249d4cSJiri Pirko return -EBUSY; 5523d249d4cSJiri Pirko } 5533d249d4cSJiri Pirko 5543d249d4cSJiri Pirko if (port_dev->flags & IFF_UP) { 5553d249d4cSJiri Pirko netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n", 5563d249d4cSJiri Pirko portname); 5573d249d4cSJiri Pirko return -EBUSY; 5583d249d4cSJiri Pirko } 5593d249d4cSJiri Pirko 5603d249d4cSJiri Pirko port = kzalloc(sizeof(struct team_port), GFP_KERNEL); 5613d249d4cSJiri Pirko if (!port) 5623d249d4cSJiri Pirko return -ENOMEM; 5633d249d4cSJiri Pirko 5643d249d4cSJiri Pirko port->dev = port_dev; 5653d249d4cSJiri Pirko port->team = team; 5663d249d4cSJiri Pirko 5673d249d4cSJiri Pirko port->orig.mtu = port_dev->mtu; 5683d249d4cSJiri Pirko err = dev_set_mtu(port_dev, dev->mtu); 5693d249d4cSJiri Pirko if (err) { 5703d249d4cSJiri Pirko netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err); 5713d249d4cSJiri Pirko goto err_set_mtu; 5723d249d4cSJiri Pirko } 5733d249d4cSJiri Pirko 5743d249d4cSJiri Pirko memcpy(port->orig.dev_addr, port_dev->dev_addr, ETH_ALEN); 5753d249d4cSJiri Pirko 5763d249d4cSJiri Pirko err = team_port_enter(team, port); 5773d249d4cSJiri Pirko if (err) { 5783d249d4cSJiri Pirko netdev_err(dev, "Device %s failed to enter team mode\n", 5793d249d4cSJiri Pirko portname); 5803d249d4cSJiri Pirko goto err_port_enter; 5813d249d4cSJiri Pirko } 5823d249d4cSJiri Pirko 5833d249d4cSJiri Pirko err = dev_open(port_dev); 5843d249d4cSJiri Pirko if (err) { 5853d249d4cSJiri Pirko netdev_dbg(dev, "Device %s opening failed\n", 5863d249d4cSJiri Pirko portname); 5873d249d4cSJiri Pirko goto err_dev_open; 5883d249d4cSJiri Pirko } 5893d249d4cSJiri Pirko 5903d249d4cSJiri Pirko err = netdev_set_master(port_dev, dev); 5913d249d4cSJiri Pirko if (err) { 5923d249d4cSJiri Pirko netdev_err(dev, "Device %s failed to set master\n", portname); 5933d249d4cSJiri Pirko goto err_set_master; 5943d249d4cSJiri Pirko } 5953d249d4cSJiri Pirko 5963d249d4cSJiri Pirko err = netdev_rx_handler_register(port_dev, team_handle_frame, 5973d249d4cSJiri Pirko port); 5983d249d4cSJiri Pirko if (err) { 5993d249d4cSJiri Pirko netdev_err(dev, "Device %s failed to register rx_handler\n", 6003d249d4cSJiri Pirko portname); 6013d249d4cSJiri Pirko goto err_handler_register; 6023d249d4cSJiri Pirko } 6033d249d4cSJiri Pirko 6043d249d4cSJiri Pirko team_port_list_add_port(team, port); 6053d249d4cSJiri Pirko team_adjust_ops(team); 6063d249d4cSJiri Pirko __team_compute_features(team); 6073d249d4cSJiri Pirko __team_port_change_check(port, !!netif_carrier_ok(port_dev)); 6083d249d4cSJiri Pirko 6093d249d4cSJiri Pirko netdev_info(dev, "Port device %s added\n", portname); 6103d249d4cSJiri Pirko 6113d249d4cSJiri Pirko return 0; 6123d249d4cSJiri Pirko 6133d249d4cSJiri Pirko err_handler_register: 6143d249d4cSJiri Pirko netdev_set_master(port_dev, NULL); 6153d249d4cSJiri Pirko 6163d249d4cSJiri Pirko err_set_master: 6173d249d4cSJiri Pirko dev_close(port_dev); 6183d249d4cSJiri Pirko 6193d249d4cSJiri Pirko err_dev_open: 6203d249d4cSJiri Pirko team_port_leave(team, port); 6213d249d4cSJiri Pirko team_port_set_orig_mac(port); 6223d249d4cSJiri Pirko 6233d249d4cSJiri Pirko err_port_enter: 6243d249d4cSJiri Pirko dev_set_mtu(port_dev, port->orig.mtu); 6253d249d4cSJiri Pirko 6263d249d4cSJiri Pirko err_set_mtu: 6273d249d4cSJiri Pirko kfree(port); 6283d249d4cSJiri Pirko 6293d249d4cSJiri Pirko return err; 6303d249d4cSJiri Pirko } 6313d249d4cSJiri Pirko 6323d249d4cSJiri Pirko static int team_port_del(struct team *team, struct net_device *port_dev) 6333d249d4cSJiri Pirko { 6343d249d4cSJiri Pirko struct net_device *dev = team->dev; 6353d249d4cSJiri Pirko struct team_port *port; 6363d249d4cSJiri Pirko char *portname = port_dev->name; 6373d249d4cSJiri Pirko 6383d249d4cSJiri Pirko port = team_port_get_rtnl(port_dev); 6393d249d4cSJiri Pirko if (!port || !team_port_find(team, port)) { 6403d249d4cSJiri Pirko netdev_err(dev, "Device %s does not act as a port of this team\n", 6413d249d4cSJiri Pirko portname); 6423d249d4cSJiri Pirko return -ENOENT; 6433d249d4cSJiri Pirko } 6443d249d4cSJiri Pirko 6453d249d4cSJiri Pirko __team_port_change_check(port, false); 6463d249d4cSJiri Pirko team_port_list_del_port(team, port); 6473d249d4cSJiri Pirko team_adjust_ops(team); 6483d249d4cSJiri Pirko netdev_rx_handler_unregister(port_dev); 6493d249d4cSJiri Pirko netdev_set_master(port_dev, NULL); 6503d249d4cSJiri Pirko dev_close(port_dev); 6513d249d4cSJiri Pirko team_port_leave(team, port); 6523d249d4cSJiri Pirko team_port_set_orig_mac(port); 6533d249d4cSJiri Pirko dev_set_mtu(port_dev, port->orig.mtu); 6543d249d4cSJiri Pirko synchronize_rcu(); 6553d249d4cSJiri Pirko kfree(port); 6563d249d4cSJiri Pirko netdev_info(dev, "Port device %s removed\n", portname); 6573d249d4cSJiri Pirko __team_compute_features(team); 6583d249d4cSJiri Pirko 6593d249d4cSJiri Pirko return 0; 6603d249d4cSJiri Pirko } 6613d249d4cSJiri Pirko 6623d249d4cSJiri Pirko 6633d249d4cSJiri Pirko /***************** 6643d249d4cSJiri Pirko * Net device ops 6653d249d4cSJiri Pirko *****************/ 6663d249d4cSJiri Pirko 6673d249d4cSJiri Pirko static const char team_no_mode_kind[] = "*NOMODE*"; 6683d249d4cSJiri Pirko 6693d249d4cSJiri Pirko static int team_mode_option_get(struct team *team, void *arg) 6703d249d4cSJiri Pirko { 6713d249d4cSJiri Pirko const char **str = arg; 6723d249d4cSJiri Pirko 6733d249d4cSJiri Pirko *str = team->mode ? team->mode->kind : team_no_mode_kind; 6743d249d4cSJiri Pirko return 0; 6753d249d4cSJiri Pirko } 6763d249d4cSJiri Pirko 6773d249d4cSJiri Pirko static int team_mode_option_set(struct team *team, void *arg) 6783d249d4cSJiri Pirko { 6793d249d4cSJiri Pirko const char **str = arg; 6803d249d4cSJiri Pirko 6813d249d4cSJiri Pirko return team_change_mode(team, *str); 6823d249d4cSJiri Pirko } 6833d249d4cSJiri Pirko 684358b8382SJiri Pirko static const struct team_option team_options[] = { 6853d249d4cSJiri Pirko { 6863d249d4cSJiri Pirko .name = "mode", 6873d249d4cSJiri Pirko .type = TEAM_OPTION_TYPE_STRING, 6883d249d4cSJiri Pirko .getter = team_mode_option_get, 6893d249d4cSJiri Pirko .setter = team_mode_option_set, 6903d249d4cSJiri Pirko }, 6913d249d4cSJiri Pirko }; 6923d249d4cSJiri Pirko 6933d249d4cSJiri Pirko static int team_init(struct net_device *dev) 6943d249d4cSJiri Pirko { 6953d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 6963d249d4cSJiri Pirko int i; 697358b8382SJiri Pirko int err; 6983d249d4cSJiri Pirko 6993d249d4cSJiri Pirko team->dev = dev; 70061dc3461SJiri Pirko mutex_init(&team->lock); 7013d249d4cSJiri Pirko 7023d249d4cSJiri Pirko team->pcpu_stats = alloc_percpu(struct team_pcpu_stats); 7033d249d4cSJiri Pirko if (!team->pcpu_stats) 7043d249d4cSJiri Pirko return -ENOMEM; 7053d249d4cSJiri Pirko 7063d249d4cSJiri Pirko for (i = 0; i < TEAM_PORT_HASHENTRIES; i++) 7073d249d4cSJiri Pirko INIT_HLIST_HEAD(&team->port_hlist[i]); 7083d249d4cSJiri Pirko INIT_LIST_HEAD(&team->port_list); 7093d249d4cSJiri Pirko 7103d249d4cSJiri Pirko team_adjust_ops(team); 7113d249d4cSJiri Pirko 7123d249d4cSJiri Pirko INIT_LIST_HEAD(&team->option_list); 713358b8382SJiri Pirko err = team_options_register(team, team_options, ARRAY_SIZE(team_options)); 714358b8382SJiri Pirko if (err) 715358b8382SJiri Pirko goto err_options_register; 7163d249d4cSJiri Pirko netif_carrier_off(dev); 7173d249d4cSJiri Pirko 7183d249d4cSJiri Pirko return 0; 719358b8382SJiri Pirko 720358b8382SJiri Pirko err_options_register: 721358b8382SJiri Pirko free_percpu(team->pcpu_stats); 722358b8382SJiri Pirko 723358b8382SJiri Pirko return err; 7243d249d4cSJiri Pirko } 7253d249d4cSJiri Pirko 7263d249d4cSJiri Pirko static void team_uninit(struct net_device *dev) 7273d249d4cSJiri Pirko { 7283d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 7293d249d4cSJiri Pirko struct team_port *port; 7303d249d4cSJiri Pirko struct team_port *tmp; 7313d249d4cSJiri Pirko 73261dc3461SJiri Pirko mutex_lock(&team->lock); 7333d249d4cSJiri Pirko list_for_each_entry_safe(port, tmp, &team->port_list, list) 7343d249d4cSJiri Pirko team_port_del(team, port->dev); 7353d249d4cSJiri Pirko 7363d249d4cSJiri Pirko __team_change_mode(team, NULL); /* cleanup */ 7373d249d4cSJiri Pirko __team_options_unregister(team, team_options, ARRAY_SIZE(team_options)); 73861dc3461SJiri Pirko mutex_unlock(&team->lock); 7393d249d4cSJiri Pirko } 7403d249d4cSJiri Pirko 7413d249d4cSJiri Pirko static void team_destructor(struct net_device *dev) 7423d249d4cSJiri Pirko { 7433d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 7443d249d4cSJiri Pirko 7453d249d4cSJiri Pirko free_percpu(team->pcpu_stats); 7463d249d4cSJiri Pirko free_netdev(dev); 7473d249d4cSJiri Pirko } 7483d249d4cSJiri Pirko 7493d249d4cSJiri Pirko static int team_open(struct net_device *dev) 7503d249d4cSJiri Pirko { 7513d249d4cSJiri Pirko netif_carrier_on(dev); 7523d249d4cSJiri Pirko return 0; 7533d249d4cSJiri Pirko } 7543d249d4cSJiri Pirko 7553d249d4cSJiri Pirko static int team_close(struct net_device *dev) 7563d249d4cSJiri Pirko { 7573d249d4cSJiri Pirko netif_carrier_off(dev); 7583d249d4cSJiri Pirko return 0; 7593d249d4cSJiri Pirko } 7603d249d4cSJiri Pirko 7613d249d4cSJiri Pirko /* 7623d249d4cSJiri Pirko * note: already called with rcu_read_lock 7633d249d4cSJiri Pirko */ 7643d249d4cSJiri Pirko static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev) 7653d249d4cSJiri Pirko { 7663d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 7673d249d4cSJiri Pirko bool tx_success = false; 7683d249d4cSJiri Pirko unsigned int len = skb->len; 7693d249d4cSJiri Pirko 7703d249d4cSJiri Pirko tx_success = team->ops.transmit(team, skb); 7713d249d4cSJiri Pirko if (tx_success) { 7723d249d4cSJiri Pirko struct team_pcpu_stats *pcpu_stats; 7733d249d4cSJiri Pirko 7743d249d4cSJiri Pirko pcpu_stats = this_cpu_ptr(team->pcpu_stats); 7753d249d4cSJiri Pirko u64_stats_update_begin(&pcpu_stats->syncp); 7763d249d4cSJiri Pirko pcpu_stats->tx_packets++; 7773d249d4cSJiri Pirko pcpu_stats->tx_bytes += len; 7783d249d4cSJiri Pirko u64_stats_update_end(&pcpu_stats->syncp); 7793d249d4cSJiri Pirko } else { 7803d249d4cSJiri Pirko this_cpu_inc(team->pcpu_stats->tx_dropped); 7813d249d4cSJiri Pirko } 7823d249d4cSJiri Pirko 7833d249d4cSJiri Pirko return NETDEV_TX_OK; 7843d249d4cSJiri Pirko } 7853d249d4cSJiri Pirko 7863d249d4cSJiri Pirko static void team_change_rx_flags(struct net_device *dev, int change) 7873d249d4cSJiri Pirko { 7883d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 7893d249d4cSJiri Pirko struct team_port *port; 7903d249d4cSJiri Pirko int inc; 7913d249d4cSJiri Pirko 7923d249d4cSJiri Pirko rcu_read_lock(); 7933d249d4cSJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) { 7943d249d4cSJiri Pirko if (change & IFF_PROMISC) { 7953d249d4cSJiri Pirko inc = dev->flags & IFF_PROMISC ? 1 : -1; 7963d249d4cSJiri Pirko dev_set_promiscuity(port->dev, inc); 7973d249d4cSJiri Pirko } 7983d249d4cSJiri Pirko if (change & IFF_ALLMULTI) { 7993d249d4cSJiri Pirko inc = dev->flags & IFF_ALLMULTI ? 1 : -1; 8003d249d4cSJiri Pirko dev_set_allmulti(port->dev, inc); 8013d249d4cSJiri Pirko } 8023d249d4cSJiri Pirko } 8033d249d4cSJiri Pirko rcu_read_unlock(); 8043d249d4cSJiri Pirko } 8053d249d4cSJiri Pirko 8063d249d4cSJiri Pirko static void team_set_rx_mode(struct net_device *dev) 8073d249d4cSJiri Pirko { 8083d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 8093d249d4cSJiri Pirko struct team_port *port; 8103d249d4cSJiri Pirko 8113d249d4cSJiri Pirko rcu_read_lock(); 8123d249d4cSJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) { 8133d249d4cSJiri Pirko dev_uc_sync(port->dev, dev); 8143d249d4cSJiri Pirko dev_mc_sync(port->dev, dev); 8153d249d4cSJiri Pirko } 8163d249d4cSJiri Pirko rcu_read_unlock(); 8173d249d4cSJiri Pirko } 8183d249d4cSJiri Pirko 8193d249d4cSJiri Pirko static int team_set_mac_address(struct net_device *dev, void *p) 8203d249d4cSJiri Pirko { 8213d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 8223d249d4cSJiri Pirko struct team_port *port; 8233d249d4cSJiri Pirko struct sockaddr *addr = p; 8243d249d4cSJiri Pirko 8253d249d4cSJiri Pirko memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 8263d249d4cSJiri Pirko rcu_read_lock(); 8273d249d4cSJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) 8283d249d4cSJiri Pirko if (team->ops.port_change_mac) 8293d249d4cSJiri Pirko team->ops.port_change_mac(team, port); 8303d249d4cSJiri Pirko rcu_read_unlock(); 8313d249d4cSJiri Pirko return 0; 8323d249d4cSJiri Pirko } 8333d249d4cSJiri Pirko 8343d249d4cSJiri Pirko static int team_change_mtu(struct net_device *dev, int new_mtu) 8353d249d4cSJiri Pirko { 8363d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 8373d249d4cSJiri Pirko struct team_port *port; 8383d249d4cSJiri Pirko int err; 8393d249d4cSJiri Pirko 8403d249d4cSJiri Pirko /* 8413d249d4cSJiri Pirko * Alhough this is reader, it's guarded by team lock. It's not possible 8423d249d4cSJiri Pirko * to traverse list in reverse under rcu_read_lock 8433d249d4cSJiri Pirko */ 84461dc3461SJiri Pirko mutex_lock(&team->lock); 8453d249d4cSJiri Pirko list_for_each_entry(port, &team->port_list, list) { 8463d249d4cSJiri Pirko err = dev_set_mtu(port->dev, new_mtu); 8473d249d4cSJiri Pirko if (err) { 8483d249d4cSJiri Pirko netdev_err(dev, "Device %s failed to change mtu", 8493d249d4cSJiri Pirko port->dev->name); 8503d249d4cSJiri Pirko goto unwind; 8513d249d4cSJiri Pirko } 8523d249d4cSJiri Pirko } 85361dc3461SJiri Pirko mutex_unlock(&team->lock); 8543d249d4cSJiri Pirko 8553d249d4cSJiri Pirko dev->mtu = new_mtu; 8563d249d4cSJiri Pirko 8573d249d4cSJiri Pirko return 0; 8583d249d4cSJiri Pirko 8593d249d4cSJiri Pirko unwind: 8603d249d4cSJiri Pirko list_for_each_entry_continue_reverse(port, &team->port_list, list) 8613d249d4cSJiri Pirko dev_set_mtu(port->dev, dev->mtu); 86261dc3461SJiri Pirko mutex_unlock(&team->lock); 8633d249d4cSJiri Pirko 8643d249d4cSJiri Pirko return err; 8653d249d4cSJiri Pirko } 8663d249d4cSJiri Pirko 8673d249d4cSJiri Pirko static struct rtnl_link_stats64 * 8683d249d4cSJiri Pirko team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 8693d249d4cSJiri Pirko { 8703d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 8713d249d4cSJiri Pirko struct team_pcpu_stats *p; 8723d249d4cSJiri Pirko u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 8733d249d4cSJiri Pirko u32 rx_dropped = 0, tx_dropped = 0; 8743d249d4cSJiri Pirko unsigned int start; 8753d249d4cSJiri Pirko int i; 8763d249d4cSJiri Pirko 8773d249d4cSJiri Pirko for_each_possible_cpu(i) { 8783d249d4cSJiri Pirko p = per_cpu_ptr(team->pcpu_stats, i); 8793d249d4cSJiri Pirko do { 8803d249d4cSJiri Pirko start = u64_stats_fetch_begin_bh(&p->syncp); 8813d249d4cSJiri Pirko rx_packets = p->rx_packets; 8823d249d4cSJiri Pirko rx_bytes = p->rx_bytes; 8833d249d4cSJiri Pirko rx_multicast = p->rx_multicast; 8843d249d4cSJiri Pirko tx_packets = p->tx_packets; 8853d249d4cSJiri Pirko tx_bytes = p->tx_bytes; 8863d249d4cSJiri Pirko } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 8873d249d4cSJiri Pirko 8883d249d4cSJiri Pirko stats->rx_packets += rx_packets; 8893d249d4cSJiri Pirko stats->rx_bytes += rx_bytes; 8903d249d4cSJiri Pirko stats->multicast += rx_multicast; 8913d249d4cSJiri Pirko stats->tx_packets += tx_packets; 8923d249d4cSJiri Pirko stats->tx_bytes += tx_bytes; 8933d249d4cSJiri Pirko /* 8943d249d4cSJiri Pirko * rx_dropped & tx_dropped are u32, updated 8953d249d4cSJiri Pirko * without syncp protection. 8963d249d4cSJiri Pirko */ 8973d249d4cSJiri Pirko rx_dropped += p->rx_dropped; 8983d249d4cSJiri Pirko tx_dropped += p->tx_dropped; 8993d249d4cSJiri Pirko } 9003d249d4cSJiri Pirko stats->rx_dropped = rx_dropped; 9013d249d4cSJiri Pirko stats->tx_dropped = tx_dropped; 9023d249d4cSJiri Pirko return stats; 9033d249d4cSJiri Pirko } 9043d249d4cSJiri Pirko 9058e586137SJiri Pirko static int team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid) 9063d249d4cSJiri Pirko { 9073d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 9083d249d4cSJiri Pirko struct team_port *port; 9093d249d4cSJiri Pirko 9103d249d4cSJiri Pirko rcu_read_lock(); 9113d249d4cSJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) { 9123d249d4cSJiri Pirko const struct net_device_ops *ops = port->dev->netdev_ops; 9133d249d4cSJiri Pirko 9143d249d4cSJiri Pirko if (ops->ndo_vlan_rx_add_vid) 9153d249d4cSJiri Pirko ops->ndo_vlan_rx_add_vid(port->dev, vid); 9163d249d4cSJiri Pirko } 9173d249d4cSJiri Pirko rcu_read_unlock(); 9188e586137SJiri Pirko 9198e586137SJiri Pirko return 0; 9203d249d4cSJiri Pirko } 9213d249d4cSJiri Pirko 9228e586137SJiri Pirko static int team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid) 9233d249d4cSJiri Pirko { 9243d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 9253d249d4cSJiri Pirko struct team_port *port; 9263d249d4cSJiri Pirko 9273d249d4cSJiri Pirko rcu_read_lock(); 9283d249d4cSJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) { 9293d249d4cSJiri Pirko const struct net_device_ops *ops = port->dev->netdev_ops; 9303d249d4cSJiri Pirko 9313d249d4cSJiri Pirko if (ops->ndo_vlan_rx_kill_vid) 9323d249d4cSJiri Pirko ops->ndo_vlan_rx_kill_vid(port->dev, vid); 9333d249d4cSJiri Pirko } 9343d249d4cSJiri Pirko rcu_read_unlock(); 9358e586137SJiri Pirko 9368e586137SJiri Pirko return 0; 9373d249d4cSJiri Pirko } 9383d249d4cSJiri Pirko 9393d249d4cSJiri Pirko static int team_add_slave(struct net_device *dev, struct net_device *port_dev) 9403d249d4cSJiri Pirko { 9413d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 9423d249d4cSJiri Pirko int err; 9433d249d4cSJiri Pirko 94461dc3461SJiri Pirko mutex_lock(&team->lock); 9453d249d4cSJiri Pirko err = team_port_add(team, port_dev); 94661dc3461SJiri Pirko mutex_unlock(&team->lock); 9473d249d4cSJiri Pirko return err; 9483d249d4cSJiri Pirko } 9493d249d4cSJiri Pirko 9503d249d4cSJiri Pirko static int team_del_slave(struct net_device *dev, struct net_device *port_dev) 9513d249d4cSJiri Pirko { 9523d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 9533d249d4cSJiri Pirko int err; 9543d249d4cSJiri Pirko 95561dc3461SJiri Pirko mutex_lock(&team->lock); 9563d249d4cSJiri Pirko err = team_port_del(team, port_dev); 95761dc3461SJiri Pirko mutex_unlock(&team->lock); 9583d249d4cSJiri Pirko return err; 9593d249d4cSJiri Pirko } 9603d249d4cSJiri Pirko 961234a8fd4SJiri Pirko static netdev_features_t team_fix_features(struct net_device *dev, 962234a8fd4SJiri Pirko netdev_features_t features) 963234a8fd4SJiri Pirko { 964234a8fd4SJiri Pirko struct team_port *port; 965234a8fd4SJiri Pirko struct team *team = netdev_priv(dev); 966234a8fd4SJiri Pirko netdev_features_t mask; 967234a8fd4SJiri Pirko 968234a8fd4SJiri Pirko mask = features; 969234a8fd4SJiri Pirko features &= ~NETIF_F_ONE_FOR_ALL; 970234a8fd4SJiri Pirko features |= NETIF_F_ALL_FOR_ALL; 971234a8fd4SJiri Pirko 972234a8fd4SJiri Pirko rcu_read_lock(); 973234a8fd4SJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) { 974234a8fd4SJiri Pirko features = netdev_increment_features(features, 975234a8fd4SJiri Pirko port->dev->features, 976234a8fd4SJiri Pirko mask); 977234a8fd4SJiri Pirko } 978234a8fd4SJiri Pirko rcu_read_unlock(); 979234a8fd4SJiri Pirko return features; 980234a8fd4SJiri Pirko } 981234a8fd4SJiri Pirko 9823d249d4cSJiri Pirko static const struct net_device_ops team_netdev_ops = { 9833d249d4cSJiri Pirko .ndo_init = team_init, 9843d249d4cSJiri Pirko .ndo_uninit = team_uninit, 9853d249d4cSJiri Pirko .ndo_open = team_open, 9863d249d4cSJiri Pirko .ndo_stop = team_close, 9873d249d4cSJiri Pirko .ndo_start_xmit = team_xmit, 9883d249d4cSJiri Pirko .ndo_change_rx_flags = team_change_rx_flags, 9893d249d4cSJiri Pirko .ndo_set_rx_mode = team_set_rx_mode, 9903d249d4cSJiri Pirko .ndo_set_mac_address = team_set_mac_address, 9913d249d4cSJiri Pirko .ndo_change_mtu = team_change_mtu, 9923d249d4cSJiri Pirko .ndo_get_stats64 = team_get_stats64, 9933d249d4cSJiri Pirko .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid, 9943d249d4cSJiri Pirko .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid, 9953d249d4cSJiri Pirko .ndo_add_slave = team_add_slave, 9963d249d4cSJiri Pirko .ndo_del_slave = team_del_slave, 997234a8fd4SJiri Pirko .ndo_fix_features = team_fix_features, 9983d249d4cSJiri Pirko }; 9993d249d4cSJiri Pirko 10003d249d4cSJiri Pirko 10013d249d4cSJiri Pirko /*********************** 10023d249d4cSJiri Pirko * rt netlink interface 10033d249d4cSJiri Pirko ***********************/ 10043d249d4cSJiri Pirko 10053d249d4cSJiri Pirko static void team_setup(struct net_device *dev) 10063d249d4cSJiri Pirko { 10073d249d4cSJiri Pirko ether_setup(dev); 10083d249d4cSJiri Pirko 10093d249d4cSJiri Pirko dev->netdev_ops = &team_netdev_ops; 10103d249d4cSJiri Pirko dev->destructor = team_destructor; 10113d249d4cSJiri Pirko dev->tx_queue_len = 0; 10123d249d4cSJiri Pirko dev->flags |= IFF_MULTICAST; 10133d249d4cSJiri Pirko dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 10143d249d4cSJiri Pirko 10153d249d4cSJiri Pirko /* 10163d249d4cSJiri Pirko * Indicate we support unicast address filtering. That way core won't 10173d249d4cSJiri Pirko * bring us to promisc mode in case a unicast addr is added. 10183d249d4cSJiri Pirko * Let this up to underlay drivers. 10193d249d4cSJiri Pirko */ 10203d249d4cSJiri Pirko dev->priv_flags |= IFF_UNICAST_FLT; 10213d249d4cSJiri Pirko 10223d249d4cSJiri Pirko dev->features |= NETIF_F_LLTX; 10233d249d4cSJiri Pirko dev->features |= NETIF_F_GRO; 10243d249d4cSJiri Pirko dev->hw_features = NETIF_F_HW_VLAN_TX | 10253d249d4cSJiri Pirko NETIF_F_HW_VLAN_RX | 10263d249d4cSJiri Pirko NETIF_F_HW_VLAN_FILTER; 10273d249d4cSJiri Pirko 10283d249d4cSJiri Pirko dev->features |= dev->hw_features; 10293d249d4cSJiri Pirko } 10303d249d4cSJiri Pirko 10313d249d4cSJiri Pirko static int team_newlink(struct net *src_net, struct net_device *dev, 10323d249d4cSJiri Pirko struct nlattr *tb[], struct nlattr *data[]) 10333d249d4cSJiri Pirko { 10343d249d4cSJiri Pirko int err; 10353d249d4cSJiri Pirko 10363d249d4cSJiri Pirko if (tb[IFLA_ADDRESS] == NULL) 10373d249d4cSJiri Pirko random_ether_addr(dev->dev_addr); 10383d249d4cSJiri Pirko 10393d249d4cSJiri Pirko err = register_netdevice(dev); 10403d249d4cSJiri Pirko if (err) 10413d249d4cSJiri Pirko return err; 10423d249d4cSJiri Pirko 10433d249d4cSJiri Pirko return 0; 10443d249d4cSJiri Pirko } 10453d249d4cSJiri Pirko 10463d249d4cSJiri Pirko static int team_validate(struct nlattr *tb[], struct nlattr *data[]) 10473d249d4cSJiri Pirko { 10483d249d4cSJiri Pirko if (tb[IFLA_ADDRESS]) { 10493d249d4cSJiri Pirko if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 10503d249d4cSJiri Pirko return -EINVAL; 10513d249d4cSJiri Pirko if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 10523d249d4cSJiri Pirko return -EADDRNOTAVAIL; 10533d249d4cSJiri Pirko } 10543d249d4cSJiri Pirko return 0; 10553d249d4cSJiri Pirko } 10563d249d4cSJiri Pirko 10573d249d4cSJiri Pirko static struct rtnl_link_ops team_link_ops __read_mostly = { 10583d249d4cSJiri Pirko .kind = DRV_NAME, 10593d249d4cSJiri Pirko .priv_size = sizeof(struct team), 10603d249d4cSJiri Pirko .setup = team_setup, 10613d249d4cSJiri Pirko .newlink = team_newlink, 10623d249d4cSJiri Pirko .validate = team_validate, 10633d249d4cSJiri Pirko }; 10643d249d4cSJiri Pirko 10653d249d4cSJiri Pirko 10663d249d4cSJiri Pirko /*********************************** 10673d249d4cSJiri Pirko * Generic netlink custom interface 10683d249d4cSJiri Pirko ***********************************/ 10693d249d4cSJiri Pirko 10703d249d4cSJiri Pirko static struct genl_family team_nl_family = { 10713d249d4cSJiri Pirko .id = GENL_ID_GENERATE, 10723d249d4cSJiri Pirko .name = TEAM_GENL_NAME, 10733d249d4cSJiri Pirko .version = TEAM_GENL_VERSION, 10743d249d4cSJiri Pirko .maxattr = TEAM_ATTR_MAX, 10753d249d4cSJiri Pirko .netnsok = true, 10763d249d4cSJiri Pirko }; 10773d249d4cSJiri Pirko 10783d249d4cSJiri Pirko static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = { 10793d249d4cSJiri Pirko [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, }, 10803d249d4cSJiri Pirko [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 }, 10813d249d4cSJiri Pirko [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED }, 10823d249d4cSJiri Pirko [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED }, 10833d249d4cSJiri Pirko }; 10843d249d4cSJiri Pirko 10853d249d4cSJiri Pirko static const struct nla_policy 10863d249d4cSJiri Pirko team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = { 10873d249d4cSJiri Pirko [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, }, 10883d249d4cSJiri Pirko [TEAM_ATTR_OPTION_NAME] = { 10893d249d4cSJiri Pirko .type = NLA_STRING, 10903d249d4cSJiri Pirko .len = TEAM_STRING_MAX_LEN, 10913d249d4cSJiri Pirko }, 10923d249d4cSJiri Pirko [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG }, 10933d249d4cSJiri Pirko [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 }, 10943d249d4cSJiri Pirko [TEAM_ATTR_OPTION_DATA] = { 10953d249d4cSJiri Pirko .type = NLA_BINARY, 10963d249d4cSJiri Pirko .len = TEAM_STRING_MAX_LEN, 10973d249d4cSJiri Pirko }, 10983d249d4cSJiri Pirko }; 10993d249d4cSJiri Pirko 11003d249d4cSJiri Pirko static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info) 11013d249d4cSJiri Pirko { 11023d249d4cSJiri Pirko struct sk_buff *msg; 11033d249d4cSJiri Pirko void *hdr; 11043d249d4cSJiri Pirko int err; 11053d249d4cSJiri Pirko 11063d249d4cSJiri Pirko msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 11073d249d4cSJiri Pirko if (!msg) 11083d249d4cSJiri Pirko return -ENOMEM; 11093d249d4cSJiri Pirko 11103d249d4cSJiri Pirko hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq, 11113d249d4cSJiri Pirko &team_nl_family, 0, TEAM_CMD_NOOP); 11123d249d4cSJiri Pirko if (IS_ERR(hdr)) { 11133d249d4cSJiri Pirko err = PTR_ERR(hdr); 11143d249d4cSJiri Pirko goto err_msg_put; 11153d249d4cSJiri Pirko } 11163d249d4cSJiri Pirko 11173d249d4cSJiri Pirko genlmsg_end(msg, hdr); 11183d249d4cSJiri Pirko 11193d249d4cSJiri Pirko return genlmsg_unicast(genl_info_net(info), msg, info->snd_pid); 11203d249d4cSJiri Pirko 11213d249d4cSJiri Pirko err_msg_put: 11223d249d4cSJiri Pirko nlmsg_free(msg); 11233d249d4cSJiri Pirko 11243d249d4cSJiri Pirko return err; 11253d249d4cSJiri Pirko } 11263d249d4cSJiri Pirko 11273d249d4cSJiri Pirko /* 11283d249d4cSJiri Pirko * Netlink cmd functions should be locked by following two functions. 11298c0713a5SJiri Pirko * Since dev gets held here, that ensures dev won't disappear in between. 11303d249d4cSJiri Pirko */ 11313d249d4cSJiri Pirko static struct team *team_nl_team_get(struct genl_info *info) 11323d249d4cSJiri Pirko { 11333d249d4cSJiri Pirko struct net *net = genl_info_net(info); 11343d249d4cSJiri Pirko int ifindex; 11353d249d4cSJiri Pirko struct net_device *dev; 11363d249d4cSJiri Pirko struct team *team; 11373d249d4cSJiri Pirko 11383d249d4cSJiri Pirko if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX]) 11393d249d4cSJiri Pirko return NULL; 11403d249d4cSJiri Pirko 11413d249d4cSJiri Pirko ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]); 11428c0713a5SJiri Pirko dev = dev_get_by_index(net, ifindex); 11433d249d4cSJiri Pirko if (!dev || dev->netdev_ops != &team_netdev_ops) { 11448c0713a5SJiri Pirko if (dev) 11458c0713a5SJiri Pirko dev_put(dev); 11463d249d4cSJiri Pirko return NULL; 11473d249d4cSJiri Pirko } 11483d249d4cSJiri Pirko 11493d249d4cSJiri Pirko team = netdev_priv(dev); 115061dc3461SJiri Pirko mutex_lock(&team->lock); 11513d249d4cSJiri Pirko return team; 11523d249d4cSJiri Pirko } 11533d249d4cSJiri Pirko 11543d249d4cSJiri Pirko static void team_nl_team_put(struct team *team) 11553d249d4cSJiri Pirko { 115661dc3461SJiri Pirko mutex_unlock(&team->lock); 11578c0713a5SJiri Pirko dev_put(team->dev); 11583d249d4cSJiri Pirko } 11593d249d4cSJiri Pirko 11603d249d4cSJiri Pirko static int team_nl_send_generic(struct genl_info *info, struct team *team, 11613d249d4cSJiri Pirko int (*fill_func)(struct sk_buff *skb, 11623d249d4cSJiri Pirko struct genl_info *info, 11633d249d4cSJiri Pirko int flags, struct team *team)) 11643d249d4cSJiri Pirko { 11653d249d4cSJiri Pirko struct sk_buff *skb; 11663d249d4cSJiri Pirko int err; 11673d249d4cSJiri Pirko 11683d249d4cSJiri Pirko skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 11693d249d4cSJiri Pirko if (!skb) 11703d249d4cSJiri Pirko return -ENOMEM; 11713d249d4cSJiri Pirko 11723d249d4cSJiri Pirko err = fill_func(skb, info, NLM_F_ACK, team); 11733d249d4cSJiri Pirko if (err < 0) 11743d249d4cSJiri Pirko goto err_fill; 11753d249d4cSJiri Pirko 11763d249d4cSJiri Pirko err = genlmsg_unicast(genl_info_net(info), skb, info->snd_pid); 11773d249d4cSJiri Pirko return err; 11783d249d4cSJiri Pirko 11793d249d4cSJiri Pirko err_fill: 11803d249d4cSJiri Pirko nlmsg_free(skb); 11813d249d4cSJiri Pirko return err; 11823d249d4cSJiri Pirko } 11833d249d4cSJiri Pirko 11843d249d4cSJiri Pirko static int team_nl_fill_options_get_changed(struct sk_buff *skb, 11853d249d4cSJiri Pirko u32 pid, u32 seq, int flags, 11863d249d4cSJiri Pirko struct team *team, 11873d249d4cSJiri Pirko struct team_option *changed_option) 11883d249d4cSJiri Pirko { 11893d249d4cSJiri Pirko struct nlattr *option_list; 11903d249d4cSJiri Pirko void *hdr; 11913d249d4cSJiri Pirko struct team_option *option; 11923d249d4cSJiri Pirko 11933d249d4cSJiri Pirko hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags, 11943d249d4cSJiri Pirko TEAM_CMD_OPTIONS_GET); 11953d249d4cSJiri Pirko if (IS_ERR(hdr)) 11963d249d4cSJiri Pirko return PTR_ERR(hdr); 11973d249d4cSJiri Pirko 11983d249d4cSJiri Pirko NLA_PUT_U32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex); 11993d249d4cSJiri Pirko option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION); 12003d249d4cSJiri Pirko if (!option_list) 12013d249d4cSJiri Pirko return -EMSGSIZE; 12023d249d4cSJiri Pirko 12033d249d4cSJiri Pirko list_for_each_entry(option, &team->option_list, list) { 12043d249d4cSJiri Pirko struct nlattr *option_item; 12053d249d4cSJiri Pirko long arg; 12063d249d4cSJiri Pirko 12073d249d4cSJiri Pirko option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION); 12083d249d4cSJiri Pirko if (!option_item) 12093d249d4cSJiri Pirko goto nla_put_failure; 12103d249d4cSJiri Pirko NLA_PUT_STRING(skb, TEAM_ATTR_OPTION_NAME, option->name); 12113d249d4cSJiri Pirko if (option == changed_option) 12123d249d4cSJiri Pirko NLA_PUT_FLAG(skb, TEAM_ATTR_OPTION_CHANGED); 12133d249d4cSJiri Pirko switch (option->type) { 12143d249d4cSJiri Pirko case TEAM_OPTION_TYPE_U32: 12153d249d4cSJiri Pirko NLA_PUT_U8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32); 12163d249d4cSJiri Pirko team_option_get(team, option, &arg); 12173d249d4cSJiri Pirko NLA_PUT_U32(skb, TEAM_ATTR_OPTION_DATA, arg); 12183d249d4cSJiri Pirko break; 12193d249d4cSJiri Pirko case TEAM_OPTION_TYPE_STRING: 12203d249d4cSJiri Pirko NLA_PUT_U8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING); 12213d249d4cSJiri Pirko team_option_get(team, option, &arg); 12223d249d4cSJiri Pirko NLA_PUT_STRING(skb, TEAM_ATTR_OPTION_DATA, 12233d249d4cSJiri Pirko (char *) arg); 12243d249d4cSJiri Pirko break; 12253d249d4cSJiri Pirko default: 12263d249d4cSJiri Pirko BUG(); 12273d249d4cSJiri Pirko } 12283d249d4cSJiri Pirko nla_nest_end(skb, option_item); 12293d249d4cSJiri Pirko } 12303d249d4cSJiri Pirko 12313d249d4cSJiri Pirko nla_nest_end(skb, option_list); 12323d249d4cSJiri Pirko return genlmsg_end(skb, hdr); 12333d249d4cSJiri Pirko 12343d249d4cSJiri Pirko nla_put_failure: 12353d249d4cSJiri Pirko genlmsg_cancel(skb, hdr); 12363d249d4cSJiri Pirko return -EMSGSIZE; 12373d249d4cSJiri Pirko } 12383d249d4cSJiri Pirko 12393d249d4cSJiri Pirko static int team_nl_fill_options_get(struct sk_buff *skb, 12403d249d4cSJiri Pirko struct genl_info *info, int flags, 12413d249d4cSJiri Pirko struct team *team) 12423d249d4cSJiri Pirko { 12433d249d4cSJiri Pirko return team_nl_fill_options_get_changed(skb, info->snd_pid, 12443d249d4cSJiri Pirko info->snd_seq, NLM_F_ACK, 12453d249d4cSJiri Pirko team, NULL); 12463d249d4cSJiri Pirko } 12473d249d4cSJiri Pirko 12483d249d4cSJiri Pirko static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info) 12493d249d4cSJiri Pirko { 12503d249d4cSJiri Pirko struct team *team; 12513d249d4cSJiri Pirko int err; 12523d249d4cSJiri Pirko 12533d249d4cSJiri Pirko team = team_nl_team_get(info); 12543d249d4cSJiri Pirko if (!team) 12553d249d4cSJiri Pirko return -EINVAL; 12563d249d4cSJiri Pirko 12573d249d4cSJiri Pirko err = team_nl_send_generic(info, team, team_nl_fill_options_get); 12583d249d4cSJiri Pirko 12593d249d4cSJiri Pirko team_nl_team_put(team); 12603d249d4cSJiri Pirko 12613d249d4cSJiri Pirko return err; 12623d249d4cSJiri Pirko } 12633d249d4cSJiri Pirko 12643d249d4cSJiri Pirko static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info) 12653d249d4cSJiri Pirko { 12663d249d4cSJiri Pirko struct team *team; 12673d249d4cSJiri Pirko int err = 0; 12683d249d4cSJiri Pirko int i; 12693d249d4cSJiri Pirko struct nlattr *nl_option; 12703d249d4cSJiri Pirko 12713d249d4cSJiri Pirko team = team_nl_team_get(info); 12723d249d4cSJiri Pirko if (!team) 12733d249d4cSJiri Pirko return -EINVAL; 12743d249d4cSJiri Pirko 12753d249d4cSJiri Pirko err = -EINVAL; 12763d249d4cSJiri Pirko if (!info->attrs[TEAM_ATTR_LIST_OPTION]) { 12773d249d4cSJiri Pirko err = -EINVAL; 12783d249d4cSJiri Pirko goto team_put; 12793d249d4cSJiri Pirko } 12803d249d4cSJiri Pirko 12813d249d4cSJiri Pirko nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) { 12823d249d4cSJiri Pirko struct nlattr *mode_attrs[TEAM_ATTR_OPTION_MAX + 1]; 12833d249d4cSJiri Pirko enum team_option_type opt_type; 12843d249d4cSJiri Pirko struct team_option *option; 12853d249d4cSJiri Pirko char *opt_name; 12863d249d4cSJiri Pirko bool opt_found = false; 12873d249d4cSJiri Pirko 12883d249d4cSJiri Pirko if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) { 12893d249d4cSJiri Pirko err = -EINVAL; 12903d249d4cSJiri Pirko goto team_put; 12913d249d4cSJiri Pirko } 12923d249d4cSJiri Pirko err = nla_parse_nested(mode_attrs, TEAM_ATTR_OPTION_MAX, 12933d249d4cSJiri Pirko nl_option, team_nl_option_policy); 12943d249d4cSJiri Pirko if (err) 12953d249d4cSJiri Pirko goto team_put; 12963d249d4cSJiri Pirko if (!mode_attrs[TEAM_ATTR_OPTION_NAME] || 12973d249d4cSJiri Pirko !mode_attrs[TEAM_ATTR_OPTION_TYPE] || 12983d249d4cSJiri Pirko !mode_attrs[TEAM_ATTR_OPTION_DATA]) { 12993d249d4cSJiri Pirko err = -EINVAL; 13003d249d4cSJiri Pirko goto team_put; 13013d249d4cSJiri Pirko } 13023d249d4cSJiri Pirko switch (nla_get_u8(mode_attrs[TEAM_ATTR_OPTION_TYPE])) { 13033d249d4cSJiri Pirko case NLA_U32: 13043d249d4cSJiri Pirko opt_type = TEAM_OPTION_TYPE_U32; 13053d249d4cSJiri Pirko break; 13063d249d4cSJiri Pirko case NLA_STRING: 13073d249d4cSJiri Pirko opt_type = TEAM_OPTION_TYPE_STRING; 13083d249d4cSJiri Pirko break; 13093d249d4cSJiri Pirko default: 13103d249d4cSJiri Pirko goto team_put; 13113d249d4cSJiri Pirko } 13123d249d4cSJiri Pirko 13133d249d4cSJiri Pirko opt_name = nla_data(mode_attrs[TEAM_ATTR_OPTION_NAME]); 13143d249d4cSJiri Pirko list_for_each_entry(option, &team->option_list, list) { 13153d249d4cSJiri Pirko long arg; 13163d249d4cSJiri Pirko struct nlattr *opt_data_attr; 13173d249d4cSJiri Pirko 13183d249d4cSJiri Pirko if (option->type != opt_type || 13193d249d4cSJiri Pirko strcmp(option->name, opt_name)) 13203d249d4cSJiri Pirko continue; 13213d249d4cSJiri Pirko opt_found = true; 13223d249d4cSJiri Pirko opt_data_attr = mode_attrs[TEAM_ATTR_OPTION_DATA]; 13233d249d4cSJiri Pirko switch (opt_type) { 13243d249d4cSJiri Pirko case TEAM_OPTION_TYPE_U32: 13253d249d4cSJiri Pirko arg = nla_get_u32(opt_data_attr); 13263d249d4cSJiri Pirko break; 13273d249d4cSJiri Pirko case TEAM_OPTION_TYPE_STRING: 13283d249d4cSJiri Pirko arg = (long) nla_data(opt_data_attr); 13293d249d4cSJiri Pirko break; 13303d249d4cSJiri Pirko default: 13313d249d4cSJiri Pirko BUG(); 13323d249d4cSJiri Pirko } 13333d249d4cSJiri Pirko err = team_option_set(team, option, &arg); 13343d249d4cSJiri Pirko if (err) 13353d249d4cSJiri Pirko goto team_put; 13363d249d4cSJiri Pirko } 13373d249d4cSJiri Pirko if (!opt_found) { 13383d249d4cSJiri Pirko err = -ENOENT; 13393d249d4cSJiri Pirko goto team_put; 13403d249d4cSJiri Pirko } 13413d249d4cSJiri Pirko } 13423d249d4cSJiri Pirko 13433d249d4cSJiri Pirko team_put: 13443d249d4cSJiri Pirko team_nl_team_put(team); 13453d249d4cSJiri Pirko 13463d249d4cSJiri Pirko return err; 13473d249d4cSJiri Pirko } 13483d249d4cSJiri Pirko 13493d249d4cSJiri Pirko static int team_nl_fill_port_list_get_changed(struct sk_buff *skb, 13503d249d4cSJiri Pirko u32 pid, u32 seq, int flags, 13513d249d4cSJiri Pirko struct team *team, 13523d249d4cSJiri Pirko struct team_port *changed_port) 13533d249d4cSJiri Pirko { 13543d249d4cSJiri Pirko struct nlattr *port_list; 13553d249d4cSJiri Pirko void *hdr; 13563d249d4cSJiri Pirko struct team_port *port; 13573d249d4cSJiri Pirko 13583d249d4cSJiri Pirko hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags, 13593d249d4cSJiri Pirko TEAM_CMD_PORT_LIST_GET); 13603d249d4cSJiri Pirko if (IS_ERR(hdr)) 13613d249d4cSJiri Pirko return PTR_ERR(hdr); 13623d249d4cSJiri Pirko 13633d249d4cSJiri Pirko NLA_PUT_U32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex); 13643d249d4cSJiri Pirko port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT); 13653d249d4cSJiri Pirko if (!port_list) 13663d249d4cSJiri Pirko return -EMSGSIZE; 13673d249d4cSJiri Pirko 13683d249d4cSJiri Pirko list_for_each_entry(port, &team->port_list, list) { 13693d249d4cSJiri Pirko struct nlattr *port_item; 13703d249d4cSJiri Pirko 13713d249d4cSJiri Pirko port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT); 13723d249d4cSJiri Pirko if (!port_item) 13733d249d4cSJiri Pirko goto nla_put_failure; 13743d249d4cSJiri Pirko NLA_PUT_U32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex); 13753d249d4cSJiri Pirko if (port == changed_port) 13763d249d4cSJiri Pirko NLA_PUT_FLAG(skb, TEAM_ATTR_PORT_CHANGED); 13773d249d4cSJiri Pirko if (port->linkup) 13783d249d4cSJiri Pirko NLA_PUT_FLAG(skb, TEAM_ATTR_PORT_LINKUP); 13793d249d4cSJiri Pirko NLA_PUT_U32(skb, TEAM_ATTR_PORT_SPEED, port->speed); 13803d249d4cSJiri Pirko NLA_PUT_U8(skb, TEAM_ATTR_PORT_DUPLEX, port->duplex); 13813d249d4cSJiri Pirko nla_nest_end(skb, port_item); 13823d249d4cSJiri Pirko } 13833d249d4cSJiri Pirko 13843d249d4cSJiri Pirko nla_nest_end(skb, port_list); 13853d249d4cSJiri Pirko return genlmsg_end(skb, hdr); 13863d249d4cSJiri Pirko 13873d249d4cSJiri Pirko nla_put_failure: 13883d249d4cSJiri Pirko genlmsg_cancel(skb, hdr); 13893d249d4cSJiri Pirko return -EMSGSIZE; 13903d249d4cSJiri Pirko } 13913d249d4cSJiri Pirko 13923d249d4cSJiri Pirko static int team_nl_fill_port_list_get(struct sk_buff *skb, 13933d249d4cSJiri Pirko struct genl_info *info, int flags, 13943d249d4cSJiri Pirko struct team *team) 13953d249d4cSJiri Pirko { 13963d249d4cSJiri Pirko return team_nl_fill_port_list_get_changed(skb, info->snd_pid, 13973d249d4cSJiri Pirko info->snd_seq, NLM_F_ACK, 13983d249d4cSJiri Pirko team, NULL); 13993d249d4cSJiri Pirko } 14003d249d4cSJiri Pirko 14013d249d4cSJiri Pirko static int team_nl_cmd_port_list_get(struct sk_buff *skb, 14023d249d4cSJiri Pirko struct genl_info *info) 14033d249d4cSJiri Pirko { 14043d249d4cSJiri Pirko struct team *team; 14053d249d4cSJiri Pirko int err; 14063d249d4cSJiri Pirko 14073d249d4cSJiri Pirko team = team_nl_team_get(info); 14083d249d4cSJiri Pirko if (!team) 14093d249d4cSJiri Pirko return -EINVAL; 14103d249d4cSJiri Pirko 14113d249d4cSJiri Pirko err = team_nl_send_generic(info, team, team_nl_fill_port_list_get); 14123d249d4cSJiri Pirko 14133d249d4cSJiri Pirko team_nl_team_put(team); 14143d249d4cSJiri Pirko 14153d249d4cSJiri Pirko return err; 14163d249d4cSJiri Pirko } 14173d249d4cSJiri Pirko 14183d249d4cSJiri Pirko static struct genl_ops team_nl_ops[] = { 14193d249d4cSJiri Pirko { 14203d249d4cSJiri Pirko .cmd = TEAM_CMD_NOOP, 14213d249d4cSJiri Pirko .doit = team_nl_cmd_noop, 14223d249d4cSJiri Pirko .policy = team_nl_policy, 14233d249d4cSJiri Pirko }, 14243d249d4cSJiri Pirko { 14253d249d4cSJiri Pirko .cmd = TEAM_CMD_OPTIONS_SET, 14263d249d4cSJiri Pirko .doit = team_nl_cmd_options_set, 14273d249d4cSJiri Pirko .policy = team_nl_policy, 14283d249d4cSJiri Pirko .flags = GENL_ADMIN_PERM, 14293d249d4cSJiri Pirko }, 14303d249d4cSJiri Pirko { 14313d249d4cSJiri Pirko .cmd = TEAM_CMD_OPTIONS_GET, 14323d249d4cSJiri Pirko .doit = team_nl_cmd_options_get, 14333d249d4cSJiri Pirko .policy = team_nl_policy, 14343d249d4cSJiri Pirko .flags = GENL_ADMIN_PERM, 14353d249d4cSJiri Pirko }, 14363d249d4cSJiri Pirko { 14373d249d4cSJiri Pirko .cmd = TEAM_CMD_PORT_LIST_GET, 14383d249d4cSJiri Pirko .doit = team_nl_cmd_port_list_get, 14393d249d4cSJiri Pirko .policy = team_nl_policy, 14403d249d4cSJiri Pirko .flags = GENL_ADMIN_PERM, 14413d249d4cSJiri Pirko }, 14423d249d4cSJiri Pirko }; 14433d249d4cSJiri Pirko 14443d249d4cSJiri Pirko static struct genl_multicast_group team_change_event_mcgrp = { 14453d249d4cSJiri Pirko .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, 14463d249d4cSJiri Pirko }; 14473d249d4cSJiri Pirko 14483d249d4cSJiri Pirko static int team_nl_send_event_options_get(struct team *team, 14493d249d4cSJiri Pirko struct team_option *changed_option) 14503d249d4cSJiri Pirko { 14513d249d4cSJiri Pirko struct sk_buff *skb; 14523d249d4cSJiri Pirko int err; 14533d249d4cSJiri Pirko struct net *net = dev_net(team->dev); 14543d249d4cSJiri Pirko 14553d249d4cSJiri Pirko skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 14563d249d4cSJiri Pirko if (!skb) 14573d249d4cSJiri Pirko return -ENOMEM; 14583d249d4cSJiri Pirko 14593d249d4cSJiri Pirko err = team_nl_fill_options_get_changed(skb, 0, 0, 0, team, 14603d249d4cSJiri Pirko changed_option); 14613d249d4cSJiri Pirko if (err < 0) 14623d249d4cSJiri Pirko goto err_fill; 14633d249d4cSJiri Pirko 14643d249d4cSJiri Pirko err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id, 14653d249d4cSJiri Pirko GFP_KERNEL); 14663d249d4cSJiri Pirko return err; 14673d249d4cSJiri Pirko 14683d249d4cSJiri Pirko err_fill: 14693d249d4cSJiri Pirko nlmsg_free(skb); 14703d249d4cSJiri Pirko return err; 14713d249d4cSJiri Pirko } 14723d249d4cSJiri Pirko 14733d249d4cSJiri Pirko static int team_nl_send_event_port_list_get(struct team_port *port) 14743d249d4cSJiri Pirko { 14753d249d4cSJiri Pirko struct sk_buff *skb; 14763d249d4cSJiri Pirko int err; 14773d249d4cSJiri Pirko struct net *net = dev_net(port->team->dev); 14783d249d4cSJiri Pirko 14793d249d4cSJiri Pirko skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 14803d249d4cSJiri Pirko if (!skb) 14813d249d4cSJiri Pirko return -ENOMEM; 14823d249d4cSJiri Pirko 14833d249d4cSJiri Pirko err = team_nl_fill_port_list_get_changed(skb, 0, 0, 0, 14843d249d4cSJiri Pirko port->team, port); 14853d249d4cSJiri Pirko if (err < 0) 14863d249d4cSJiri Pirko goto err_fill; 14873d249d4cSJiri Pirko 14883d249d4cSJiri Pirko err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id, 14893d249d4cSJiri Pirko GFP_KERNEL); 14903d249d4cSJiri Pirko return err; 14913d249d4cSJiri Pirko 14923d249d4cSJiri Pirko err_fill: 14933d249d4cSJiri Pirko nlmsg_free(skb); 14943d249d4cSJiri Pirko return err; 14953d249d4cSJiri Pirko } 14963d249d4cSJiri Pirko 14973d249d4cSJiri Pirko static int team_nl_init(void) 14983d249d4cSJiri Pirko { 14993d249d4cSJiri Pirko int err; 15003d249d4cSJiri Pirko 15013d249d4cSJiri Pirko err = genl_register_family_with_ops(&team_nl_family, team_nl_ops, 15023d249d4cSJiri Pirko ARRAY_SIZE(team_nl_ops)); 15033d249d4cSJiri Pirko if (err) 15043d249d4cSJiri Pirko return err; 15053d249d4cSJiri Pirko 15063d249d4cSJiri Pirko err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp); 15073d249d4cSJiri Pirko if (err) 15083d249d4cSJiri Pirko goto err_change_event_grp_reg; 15093d249d4cSJiri Pirko 15103d249d4cSJiri Pirko return 0; 15113d249d4cSJiri Pirko 15123d249d4cSJiri Pirko err_change_event_grp_reg: 15133d249d4cSJiri Pirko genl_unregister_family(&team_nl_family); 15143d249d4cSJiri Pirko 15153d249d4cSJiri Pirko return err; 15163d249d4cSJiri Pirko } 15173d249d4cSJiri Pirko 15183d249d4cSJiri Pirko static void team_nl_fini(void) 15193d249d4cSJiri Pirko { 15203d249d4cSJiri Pirko genl_unregister_family(&team_nl_family); 15213d249d4cSJiri Pirko } 15223d249d4cSJiri Pirko 15233d249d4cSJiri Pirko 15243d249d4cSJiri Pirko /****************** 15253d249d4cSJiri Pirko * Change checkers 15263d249d4cSJiri Pirko ******************/ 15273d249d4cSJiri Pirko 15283d249d4cSJiri Pirko static void __team_options_change_check(struct team *team, 15293d249d4cSJiri Pirko struct team_option *changed_option) 15303d249d4cSJiri Pirko { 15313d249d4cSJiri Pirko int err; 15323d249d4cSJiri Pirko 15333d249d4cSJiri Pirko err = team_nl_send_event_options_get(team, changed_option); 15343d249d4cSJiri Pirko if (err) 15353d249d4cSJiri Pirko netdev_warn(team->dev, "Failed to send options change via netlink\n"); 15363d249d4cSJiri Pirko } 15373d249d4cSJiri Pirko 15383d249d4cSJiri Pirko /* rtnl lock is held */ 15393d249d4cSJiri Pirko static void __team_port_change_check(struct team_port *port, bool linkup) 15403d249d4cSJiri Pirko { 15413d249d4cSJiri Pirko int err; 15423d249d4cSJiri Pirko 15433d249d4cSJiri Pirko if (port->linkup == linkup) 15443d249d4cSJiri Pirko return; 15453d249d4cSJiri Pirko 15463d249d4cSJiri Pirko port->linkup = linkup; 15473d249d4cSJiri Pirko if (linkup) { 15483d249d4cSJiri Pirko struct ethtool_cmd ecmd; 15493d249d4cSJiri Pirko 15503d249d4cSJiri Pirko err = __ethtool_get_settings(port->dev, &ecmd); 15513d249d4cSJiri Pirko if (!err) { 15523d249d4cSJiri Pirko port->speed = ethtool_cmd_speed(&ecmd); 15533d249d4cSJiri Pirko port->duplex = ecmd.duplex; 15543d249d4cSJiri Pirko goto send_event; 15553d249d4cSJiri Pirko } 15563d249d4cSJiri Pirko } 15573d249d4cSJiri Pirko port->speed = 0; 15583d249d4cSJiri Pirko port->duplex = 0; 15593d249d4cSJiri Pirko 15603d249d4cSJiri Pirko send_event: 15613d249d4cSJiri Pirko err = team_nl_send_event_port_list_get(port); 15623d249d4cSJiri Pirko if (err) 15633d249d4cSJiri Pirko netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink\n", 15643d249d4cSJiri Pirko port->dev->name); 15653d249d4cSJiri Pirko 15663d249d4cSJiri Pirko } 15673d249d4cSJiri Pirko 15683d249d4cSJiri Pirko static void team_port_change_check(struct team_port *port, bool linkup) 15693d249d4cSJiri Pirko { 15703d249d4cSJiri Pirko struct team *team = port->team; 15713d249d4cSJiri Pirko 157261dc3461SJiri Pirko mutex_lock(&team->lock); 15733d249d4cSJiri Pirko __team_port_change_check(port, linkup); 157461dc3461SJiri Pirko mutex_unlock(&team->lock); 15753d249d4cSJiri Pirko } 15763d249d4cSJiri Pirko 15773d249d4cSJiri Pirko /************************************ 15783d249d4cSJiri Pirko * Net device notifier event handler 15793d249d4cSJiri Pirko ************************************/ 15803d249d4cSJiri Pirko 15813d249d4cSJiri Pirko static int team_device_event(struct notifier_block *unused, 15823d249d4cSJiri Pirko unsigned long event, void *ptr) 15833d249d4cSJiri Pirko { 15843d249d4cSJiri Pirko struct net_device *dev = (struct net_device *) ptr; 15853d249d4cSJiri Pirko struct team_port *port; 15863d249d4cSJiri Pirko 15873d249d4cSJiri Pirko port = team_port_get_rtnl(dev); 15883d249d4cSJiri Pirko if (!port) 15893d249d4cSJiri Pirko return NOTIFY_DONE; 15903d249d4cSJiri Pirko 15913d249d4cSJiri Pirko switch (event) { 15923d249d4cSJiri Pirko case NETDEV_UP: 15933d249d4cSJiri Pirko if (netif_carrier_ok(dev)) 15943d249d4cSJiri Pirko team_port_change_check(port, true); 15953d249d4cSJiri Pirko case NETDEV_DOWN: 15963d249d4cSJiri Pirko team_port_change_check(port, false); 15973d249d4cSJiri Pirko case NETDEV_CHANGE: 15983d249d4cSJiri Pirko if (netif_running(port->dev)) 15993d249d4cSJiri Pirko team_port_change_check(port, 16003d249d4cSJiri Pirko !!netif_carrier_ok(port->dev)); 16013d249d4cSJiri Pirko break; 16023d249d4cSJiri Pirko case NETDEV_UNREGISTER: 16033d249d4cSJiri Pirko team_del_slave(port->team->dev, dev); 16043d249d4cSJiri Pirko break; 16053d249d4cSJiri Pirko case NETDEV_FEAT_CHANGE: 16063d249d4cSJiri Pirko team_compute_features(port->team); 16073d249d4cSJiri Pirko break; 16083d249d4cSJiri Pirko case NETDEV_CHANGEMTU: 16093d249d4cSJiri Pirko /* Forbid to change mtu of underlaying device */ 16103d249d4cSJiri Pirko return NOTIFY_BAD; 16113d249d4cSJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 16123d249d4cSJiri Pirko /* Forbid to change type of underlaying device */ 16133d249d4cSJiri Pirko return NOTIFY_BAD; 16143d249d4cSJiri Pirko } 16153d249d4cSJiri Pirko return NOTIFY_DONE; 16163d249d4cSJiri Pirko } 16173d249d4cSJiri Pirko 16183d249d4cSJiri Pirko static struct notifier_block team_notifier_block __read_mostly = { 16193d249d4cSJiri Pirko .notifier_call = team_device_event, 16203d249d4cSJiri Pirko }; 16213d249d4cSJiri Pirko 16223d249d4cSJiri Pirko 16233d249d4cSJiri Pirko /*********************** 16243d249d4cSJiri Pirko * Module init and exit 16253d249d4cSJiri Pirko ***********************/ 16263d249d4cSJiri Pirko 16273d249d4cSJiri Pirko static int __init team_module_init(void) 16283d249d4cSJiri Pirko { 16293d249d4cSJiri Pirko int err; 16303d249d4cSJiri Pirko 16313d249d4cSJiri Pirko register_netdevice_notifier(&team_notifier_block); 16323d249d4cSJiri Pirko 16333d249d4cSJiri Pirko err = rtnl_link_register(&team_link_ops); 16343d249d4cSJiri Pirko if (err) 16353d249d4cSJiri Pirko goto err_rtnl_reg; 16363d249d4cSJiri Pirko 16373d249d4cSJiri Pirko err = team_nl_init(); 16383d249d4cSJiri Pirko if (err) 16393d249d4cSJiri Pirko goto err_nl_init; 16403d249d4cSJiri Pirko 16413d249d4cSJiri Pirko return 0; 16423d249d4cSJiri Pirko 16433d249d4cSJiri Pirko err_nl_init: 16443d249d4cSJiri Pirko rtnl_link_unregister(&team_link_ops); 16453d249d4cSJiri Pirko 16463d249d4cSJiri Pirko err_rtnl_reg: 16473d249d4cSJiri Pirko unregister_netdevice_notifier(&team_notifier_block); 16483d249d4cSJiri Pirko 16493d249d4cSJiri Pirko return err; 16503d249d4cSJiri Pirko } 16513d249d4cSJiri Pirko 16523d249d4cSJiri Pirko static void __exit team_module_exit(void) 16533d249d4cSJiri Pirko { 16543d249d4cSJiri Pirko team_nl_fini(); 16553d249d4cSJiri Pirko rtnl_link_unregister(&team_link_ops); 16563d249d4cSJiri Pirko unregister_netdevice_notifier(&team_notifier_block); 16573d249d4cSJiri Pirko } 16583d249d4cSJiri Pirko 16593d249d4cSJiri Pirko module_init(team_module_init); 16603d249d4cSJiri Pirko module_exit(team_module_exit); 16613d249d4cSJiri Pirko 16623d249d4cSJiri Pirko MODULE_LICENSE("GPL v2"); 16633d249d4cSJiri Pirko MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); 16643d249d4cSJiri Pirko MODULE_DESCRIPTION("Ethernet team device driver"); 16653d249d4cSJiri Pirko MODULE_ALIAS_RTNL_LINK(DRV_NAME); 1666