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; 99358b8382SJiri Pirko struct team_option *dst_opts[option_count]; 100358b8382SJiri Pirko int err; 1013d249d4cSJiri Pirko 102358b8382SJiri Pirko memset(dst_opts, 0, sizeof(dst_opts)); 103358b8382SJiri Pirko for (i = 0; i < option_count; i++, option++) { 104358b8382SJiri Pirko struct team_option *dst_opt; 105358b8382SJiri Pirko 106358b8382SJiri Pirko if (__team_find_option(team, option->name)) { 107358b8382SJiri Pirko err = -EEXIST; 108358b8382SJiri Pirko goto rollback; 1093d249d4cSJiri Pirko } 110358b8382SJiri Pirko dst_opt = kmalloc(sizeof(*option), GFP_KERNEL); 111358b8382SJiri Pirko if (!dst_opt) { 112358b8382SJiri Pirko err = -ENOMEM; 113358b8382SJiri Pirko goto rollback; 114358b8382SJiri Pirko } 115358b8382SJiri Pirko memcpy(dst_opt, option, sizeof(*option)); 116358b8382SJiri Pirko dst_opts[i] = dst_opt; 117358b8382SJiri Pirko } 118358b8382SJiri Pirko 119358b8382SJiri Pirko for (i = 0; i < option_count; i++) 120358b8382SJiri Pirko list_add_tail(&dst_opts[i]->list, &team->option_list); 121358b8382SJiri Pirko 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 128358b8382SJiri Pirko return err; 129358b8382SJiri Pirko } 130358b8382SJiri Pirko 1313d249d4cSJiri Pirko EXPORT_SYMBOL(team_options_register); 1323d249d4cSJiri Pirko 1333d249d4cSJiri Pirko static void __team_options_change_check(struct team *team, 1343d249d4cSJiri Pirko struct team_option *changed_option); 1353d249d4cSJiri Pirko 1363d249d4cSJiri Pirko static void __team_options_unregister(struct team *team, 137358b8382SJiri Pirko const struct team_option *option, 1383d249d4cSJiri Pirko size_t option_count) 1393d249d4cSJiri Pirko { 1403d249d4cSJiri Pirko int i; 1413d249d4cSJiri Pirko 142358b8382SJiri Pirko for (i = 0; i < option_count; i++, option++) { 143358b8382SJiri Pirko struct team_option *del_opt; 144358b8382SJiri Pirko 145358b8382SJiri Pirko del_opt = __team_find_option(team, option->name); 146358b8382SJiri Pirko if (del_opt) { 147358b8382SJiri Pirko list_del(&del_opt->list); 148358b8382SJiri Pirko kfree(del_opt); 149358b8382SJiri Pirko } 150358b8382SJiri Pirko } 1513d249d4cSJiri Pirko } 1523d249d4cSJiri Pirko 153358b8382SJiri Pirko void team_options_unregister(struct team *team, 154358b8382SJiri Pirko const struct team_option *option, 1553d249d4cSJiri Pirko size_t option_count) 1563d249d4cSJiri Pirko { 1573d249d4cSJiri Pirko __team_options_unregister(team, option, option_count); 1583d249d4cSJiri Pirko __team_options_change_check(team, NULL); 1593d249d4cSJiri Pirko } 1603d249d4cSJiri Pirko EXPORT_SYMBOL(team_options_unregister); 1613d249d4cSJiri Pirko 1623d249d4cSJiri Pirko static int team_option_get(struct team *team, struct team_option *option, 1633d249d4cSJiri Pirko void *arg) 1643d249d4cSJiri Pirko { 1653d249d4cSJiri Pirko return option->getter(team, arg); 1663d249d4cSJiri Pirko } 1673d249d4cSJiri Pirko 1683d249d4cSJiri Pirko static int team_option_set(struct team *team, struct team_option *option, 1693d249d4cSJiri Pirko void *arg) 1703d249d4cSJiri Pirko { 1713d249d4cSJiri Pirko int err; 1723d249d4cSJiri Pirko 1733d249d4cSJiri Pirko err = option->setter(team, arg); 1743d249d4cSJiri Pirko if (err) 1753d249d4cSJiri Pirko return err; 1763d249d4cSJiri Pirko 1773d249d4cSJiri Pirko __team_options_change_check(team, option); 1783d249d4cSJiri Pirko return err; 1793d249d4cSJiri Pirko } 1803d249d4cSJiri Pirko 1813d249d4cSJiri Pirko /**************** 1823d249d4cSJiri Pirko * Mode handling 1833d249d4cSJiri Pirko ****************/ 1843d249d4cSJiri Pirko 1853d249d4cSJiri Pirko static LIST_HEAD(mode_list); 1863d249d4cSJiri Pirko static DEFINE_SPINLOCK(mode_list_lock); 1873d249d4cSJiri Pirko 1883d249d4cSJiri Pirko static struct team_mode *__find_mode(const char *kind) 1893d249d4cSJiri Pirko { 1903d249d4cSJiri Pirko struct team_mode *mode; 1913d249d4cSJiri Pirko 1923d249d4cSJiri Pirko list_for_each_entry(mode, &mode_list, list) { 1933d249d4cSJiri Pirko if (strcmp(mode->kind, kind) == 0) 1943d249d4cSJiri Pirko return mode; 1953d249d4cSJiri Pirko } 1963d249d4cSJiri Pirko return NULL; 1973d249d4cSJiri Pirko } 1983d249d4cSJiri Pirko 1993d249d4cSJiri Pirko static bool is_good_mode_name(const char *name) 2003d249d4cSJiri Pirko { 2013d249d4cSJiri Pirko while (*name != '\0') { 2023d249d4cSJiri Pirko if (!isalpha(*name) && !isdigit(*name) && *name != '_') 2033d249d4cSJiri Pirko return false; 2043d249d4cSJiri Pirko name++; 2053d249d4cSJiri Pirko } 2063d249d4cSJiri Pirko return true; 2073d249d4cSJiri Pirko } 2083d249d4cSJiri Pirko 2093d249d4cSJiri Pirko int team_mode_register(struct team_mode *mode) 2103d249d4cSJiri Pirko { 2113d249d4cSJiri Pirko int err = 0; 2123d249d4cSJiri Pirko 2133d249d4cSJiri Pirko if (!is_good_mode_name(mode->kind) || 2143d249d4cSJiri Pirko mode->priv_size > TEAM_MODE_PRIV_SIZE) 2153d249d4cSJiri Pirko return -EINVAL; 2163d249d4cSJiri Pirko spin_lock(&mode_list_lock); 2173d249d4cSJiri Pirko if (__find_mode(mode->kind)) { 2183d249d4cSJiri Pirko err = -EEXIST; 2193d249d4cSJiri Pirko goto unlock; 2203d249d4cSJiri Pirko } 2213d249d4cSJiri Pirko list_add_tail(&mode->list, &mode_list); 2223d249d4cSJiri Pirko unlock: 2233d249d4cSJiri Pirko spin_unlock(&mode_list_lock); 2243d249d4cSJiri Pirko return err; 2253d249d4cSJiri Pirko } 2263d249d4cSJiri Pirko EXPORT_SYMBOL(team_mode_register); 2273d249d4cSJiri Pirko 2283d249d4cSJiri Pirko int team_mode_unregister(struct team_mode *mode) 2293d249d4cSJiri Pirko { 2303d249d4cSJiri Pirko spin_lock(&mode_list_lock); 2313d249d4cSJiri Pirko list_del_init(&mode->list); 2323d249d4cSJiri Pirko spin_unlock(&mode_list_lock); 2333d249d4cSJiri Pirko return 0; 2343d249d4cSJiri Pirko } 2353d249d4cSJiri Pirko EXPORT_SYMBOL(team_mode_unregister); 2363d249d4cSJiri Pirko 2373d249d4cSJiri Pirko static struct team_mode *team_mode_get(const char *kind) 2383d249d4cSJiri Pirko { 2393d249d4cSJiri Pirko struct team_mode *mode; 2403d249d4cSJiri Pirko 2413d249d4cSJiri Pirko spin_lock(&mode_list_lock); 2423d249d4cSJiri Pirko mode = __find_mode(kind); 2433d249d4cSJiri Pirko if (!mode) { 2443d249d4cSJiri Pirko spin_unlock(&mode_list_lock); 2453d249d4cSJiri Pirko request_module("team-mode-%s", kind); 2463d249d4cSJiri Pirko spin_lock(&mode_list_lock); 2473d249d4cSJiri Pirko mode = __find_mode(kind); 2483d249d4cSJiri Pirko } 2493d249d4cSJiri Pirko if (mode) 2503d249d4cSJiri Pirko if (!try_module_get(mode->owner)) 2513d249d4cSJiri Pirko mode = NULL; 2523d249d4cSJiri Pirko 2533d249d4cSJiri Pirko spin_unlock(&mode_list_lock); 2543d249d4cSJiri Pirko return mode; 2553d249d4cSJiri Pirko } 2563d249d4cSJiri Pirko 2573d249d4cSJiri Pirko static void team_mode_put(const struct team_mode *mode) 2583d249d4cSJiri Pirko { 2593d249d4cSJiri Pirko module_put(mode->owner); 2603d249d4cSJiri Pirko } 2613d249d4cSJiri Pirko 2623d249d4cSJiri Pirko static bool team_dummy_transmit(struct team *team, struct sk_buff *skb) 2633d249d4cSJiri Pirko { 2643d249d4cSJiri Pirko dev_kfree_skb_any(skb); 2653d249d4cSJiri Pirko return false; 2663d249d4cSJiri Pirko } 2673d249d4cSJiri Pirko 2683d249d4cSJiri Pirko rx_handler_result_t team_dummy_receive(struct team *team, 2693d249d4cSJiri Pirko struct team_port *port, 2703d249d4cSJiri Pirko struct sk_buff *skb) 2713d249d4cSJiri Pirko { 2723d249d4cSJiri Pirko return RX_HANDLER_ANOTHER; 2733d249d4cSJiri Pirko } 2743d249d4cSJiri Pirko 2753d249d4cSJiri Pirko static void team_adjust_ops(struct team *team) 2763d249d4cSJiri Pirko { 2773d249d4cSJiri Pirko /* 2783d249d4cSJiri Pirko * To avoid checks in rx/tx skb paths, ensure here that non-null and 2793d249d4cSJiri Pirko * correct ops are always set. 2803d249d4cSJiri Pirko */ 2813d249d4cSJiri Pirko 2823d249d4cSJiri Pirko if (list_empty(&team->port_list) || 2833d249d4cSJiri Pirko !team->mode || !team->mode->ops->transmit) 2843d249d4cSJiri Pirko team->ops.transmit = team_dummy_transmit; 2853d249d4cSJiri Pirko else 2863d249d4cSJiri Pirko team->ops.transmit = team->mode->ops->transmit; 2873d249d4cSJiri Pirko 2883d249d4cSJiri Pirko if (list_empty(&team->port_list) || 2893d249d4cSJiri Pirko !team->mode || !team->mode->ops->receive) 2903d249d4cSJiri Pirko team->ops.receive = team_dummy_receive; 2913d249d4cSJiri Pirko else 2923d249d4cSJiri Pirko team->ops.receive = team->mode->ops->receive; 2933d249d4cSJiri Pirko } 2943d249d4cSJiri Pirko 2953d249d4cSJiri Pirko /* 2963d249d4cSJiri Pirko * We can benefit from the fact that it's ensured no port is present 2973d249d4cSJiri Pirko * at the time of mode change. Therefore no packets are in fly so there's no 2983d249d4cSJiri Pirko * need to set mode operations in any special way. 2993d249d4cSJiri Pirko */ 3003d249d4cSJiri Pirko static int __team_change_mode(struct team *team, 3013d249d4cSJiri Pirko const struct team_mode *new_mode) 3023d249d4cSJiri Pirko { 3033d249d4cSJiri Pirko /* Check if mode was previously set and do cleanup if so */ 3043d249d4cSJiri Pirko if (team->mode) { 3053d249d4cSJiri Pirko void (*exit_op)(struct team *team) = team->ops.exit; 3063d249d4cSJiri Pirko 3073d249d4cSJiri Pirko /* Clear ops area so no callback is called any longer */ 3083d249d4cSJiri Pirko memset(&team->ops, 0, sizeof(struct team_mode_ops)); 3093d249d4cSJiri Pirko team_adjust_ops(team); 3103d249d4cSJiri Pirko 3113d249d4cSJiri Pirko if (exit_op) 3123d249d4cSJiri Pirko exit_op(team); 3133d249d4cSJiri Pirko team_mode_put(team->mode); 3143d249d4cSJiri Pirko team->mode = NULL; 3153d249d4cSJiri Pirko /* zero private data area */ 3163d249d4cSJiri Pirko memset(&team->mode_priv, 0, 3173d249d4cSJiri Pirko sizeof(struct team) - offsetof(struct team, mode_priv)); 3183d249d4cSJiri Pirko } 3193d249d4cSJiri Pirko 3203d249d4cSJiri Pirko if (!new_mode) 3213d249d4cSJiri Pirko return 0; 3223d249d4cSJiri Pirko 3233d249d4cSJiri Pirko if (new_mode->ops->init) { 3243d249d4cSJiri Pirko int err; 3253d249d4cSJiri Pirko 3263d249d4cSJiri Pirko err = new_mode->ops->init(team); 3273d249d4cSJiri Pirko if (err) 3283d249d4cSJiri Pirko return err; 3293d249d4cSJiri Pirko } 3303d249d4cSJiri Pirko 3313d249d4cSJiri Pirko team->mode = new_mode; 3323d249d4cSJiri Pirko memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops)); 3333d249d4cSJiri Pirko team_adjust_ops(team); 3343d249d4cSJiri Pirko 3353d249d4cSJiri Pirko return 0; 3363d249d4cSJiri Pirko } 3373d249d4cSJiri Pirko 3383d249d4cSJiri Pirko static int team_change_mode(struct team *team, const char *kind) 3393d249d4cSJiri Pirko { 3403d249d4cSJiri Pirko struct team_mode *new_mode; 3413d249d4cSJiri Pirko struct net_device *dev = team->dev; 3423d249d4cSJiri Pirko int err; 3433d249d4cSJiri Pirko 3443d249d4cSJiri Pirko if (!list_empty(&team->port_list)) { 3453d249d4cSJiri Pirko netdev_err(dev, "No ports can be present during mode change\n"); 3463d249d4cSJiri Pirko return -EBUSY; 3473d249d4cSJiri Pirko } 3483d249d4cSJiri Pirko 3493d249d4cSJiri Pirko if (team->mode && strcmp(team->mode->kind, kind) == 0) { 3503d249d4cSJiri Pirko netdev_err(dev, "Unable to change to the same mode the team is in\n"); 3513d249d4cSJiri Pirko return -EINVAL; 3523d249d4cSJiri Pirko } 3533d249d4cSJiri Pirko 3543d249d4cSJiri Pirko new_mode = team_mode_get(kind); 3553d249d4cSJiri Pirko if (!new_mode) { 3563d249d4cSJiri Pirko netdev_err(dev, "Mode \"%s\" not found\n", kind); 3573d249d4cSJiri Pirko return -EINVAL; 3583d249d4cSJiri Pirko } 3593d249d4cSJiri Pirko 3603d249d4cSJiri Pirko err = __team_change_mode(team, new_mode); 3613d249d4cSJiri Pirko if (err) { 3623d249d4cSJiri Pirko netdev_err(dev, "Failed to change to mode \"%s\"\n", kind); 3633d249d4cSJiri Pirko team_mode_put(new_mode); 3643d249d4cSJiri Pirko return err; 3653d249d4cSJiri Pirko } 3663d249d4cSJiri Pirko 3673d249d4cSJiri Pirko netdev_info(dev, "Mode changed to \"%s\"\n", kind); 3683d249d4cSJiri Pirko return 0; 3693d249d4cSJiri Pirko } 3703d249d4cSJiri Pirko 3713d249d4cSJiri Pirko 3723d249d4cSJiri Pirko /************************ 3733d249d4cSJiri Pirko * Rx path frame handler 3743d249d4cSJiri Pirko ************************/ 3753d249d4cSJiri Pirko 3763d249d4cSJiri Pirko /* note: already called with rcu_read_lock */ 3773d249d4cSJiri Pirko static rx_handler_result_t team_handle_frame(struct sk_buff **pskb) 3783d249d4cSJiri Pirko { 3793d249d4cSJiri Pirko struct sk_buff *skb = *pskb; 3803d249d4cSJiri Pirko struct team_port *port; 3813d249d4cSJiri Pirko struct team *team; 3823d249d4cSJiri Pirko rx_handler_result_t res; 3833d249d4cSJiri Pirko 3843d249d4cSJiri Pirko skb = skb_share_check(skb, GFP_ATOMIC); 3853d249d4cSJiri Pirko if (!skb) 3863d249d4cSJiri Pirko return RX_HANDLER_CONSUMED; 3873d249d4cSJiri Pirko 3883d249d4cSJiri Pirko *pskb = skb; 3893d249d4cSJiri Pirko 3903d249d4cSJiri Pirko port = team_port_get_rcu(skb->dev); 3913d249d4cSJiri Pirko team = port->team; 3923d249d4cSJiri Pirko 3933d249d4cSJiri Pirko res = team->ops.receive(team, port, skb); 3943d249d4cSJiri Pirko if (res == RX_HANDLER_ANOTHER) { 3953d249d4cSJiri Pirko struct team_pcpu_stats *pcpu_stats; 3963d249d4cSJiri Pirko 3973d249d4cSJiri Pirko pcpu_stats = this_cpu_ptr(team->pcpu_stats); 3983d249d4cSJiri Pirko u64_stats_update_begin(&pcpu_stats->syncp); 3993d249d4cSJiri Pirko pcpu_stats->rx_packets++; 4003d249d4cSJiri Pirko pcpu_stats->rx_bytes += skb->len; 4013d249d4cSJiri Pirko if (skb->pkt_type == PACKET_MULTICAST) 4023d249d4cSJiri Pirko pcpu_stats->rx_multicast++; 4033d249d4cSJiri Pirko u64_stats_update_end(&pcpu_stats->syncp); 4043d249d4cSJiri Pirko 4053d249d4cSJiri Pirko skb->dev = team->dev; 4063d249d4cSJiri Pirko } else { 4073d249d4cSJiri Pirko this_cpu_inc(team->pcpu_stats->rx_dropped); 4083d249d4cSJiri Pirko } 4093d249d4cSJiri Pirko 4103d249d4cSJiri Pirko return res; 4113d249d4cSJiri Pirko } 4123d249d4cSJiri Pirko 4133d249d4cSJiri Pirko 4143d249d4cSJiri Pirko /**************** 4153d249d4cSJiri Pirko * Port handling 4163d249d4cSJiri Pirko ****************/ 4173d249d4cSJiri Pirko 4183d249d4cSJiri Pirko static bool team_port_find(const struct team *team, 4193d249d4cSJiri Pirko const struct team_port *port) 4203d249d4cSJiri Pirko { 4213d249d4cSJiri Pirko struct team_port *cur; 4223d249d4cSJiri Pirko 4233d249d4cSJiri Pirko list_for_each_entry(cur, &team->port_list, list) 4243d249d4cSJiri Pirko if (cur == port) 4253d249d4cSJiri Pirko return true; 4263d249d4cSJiri Pirko return false; 4273d249d4cSJiri Pirko } 4283d249d4cSJiri Pirko 4293d249d4cSJiri Pirko /* 4303d249d4cSJiri Pirko * Add/delete port to the team port list. Write guarded by rtnl_lock. 4313d249d4cSJiri Pirko * Takes care of correct port->index setup (might be racy). 4323d249d4cSJiri Pirko */ 4333d249d4cSJiri Pirko static void team_port_list_add_port(struct team *team, 4343d249d4cSJiri Pirko struct team_port *port) 4353d249d4cSJiri Pirko { 4363d249d4cSJiri Pirko port->index = team->port_count++; 4373d249d4cSJiri Pirko hlist_add_head_rcu(&port->hlist, 4383d249d4cSJiri Pirko team_port_index_hash(team, port->index)); 4393d249d4cSJiri Pirko list_add_tail_rcu(&port->list, &team->port_list); 4403d249d4cSJiri Pirko } 4413d249d4cSJiri Pirko 4423d249d4cSJiri Pirko static void __reconstruct_port_hlist(struct team *team, int rm_index) 4433d249d4cSJiri Pirko { 4443d249d4cSJiri Pirko int i; 4453d249d4cSJiri Pirko struct team_port *port; 4463d249d4cSJiri Pirko 4473d249d4cSJiri Pirko for (i = rm_index + 1; i < team->port_count; i++) { 4483d249d4cSJiri Pirko port = team_get_port_by_index(team, i); 4493d249d4cSJiri Pirko hlist_del_rcu(&port->hlist); 4503d249d4cSJiri Pirko port->index--; 4513d249d4cSJiri Pirko hlist_add_head_rcu(&port->hlist, 4523d249d4cSJiri Pirko team_port_index_hash(team, port->index)); 4533d249d4cSJiri Pirko } 4543d249d4cSJiri Pirko } 4553d249d4cSJiri Pirko 4563d249d4cSJiri Pirko static void team_port_list_del_port(struct team *team, 4573d249d4cSJiri Pirko struct team_port *port) 4583d249d4cSJiri Pirko { 4593d249d4cSJiri Pirko int rm_index = port->index; 4603d249d4cSJiri Pirko 4613d249d4cSJiri Pirko hlist_del_rcu(&port->hlist); 4623d249d4cSJiri Pirko list_del_rcu(&port->list); 4633d249d4cSJiri Pirko __reconstruct_port_hlist(team, rm_index); 4643d249d4cSJiri Pirko team->port_count--; 4653d249d4cSJiri Pirko } 4663d249d4cSJiri Pirko 4673d249d4cSJiri Pirko #define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \ 4683d249d4cSJiri Pirko NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ 4693d249d4cSJiri Pirko NETIF_F_HIGHDMA | NETIF_F_LRO) 4703d249d4cSJiri Pirko 4713d249d4cSJiri Pirko static void __team_compute_features(struct team *team) 4723d249d4cSJiri Pirko { 4733d249d4cSJiri Pirko struct team_port *port; 4743d249d4cSJiri Pirko u32 vlan_features = TEAM_VLAN_FEATURES; 4753d249d4cSJiri Pirko unsigned short max_hard_header_len = ETH_HLEN; 4763d249d4cSJiri Pirko 4773d249d4cSJiri Pirko list_for_each_entry(port, &team->port_list, list) { 4783d249d4cSJiri Pirko vlan_features = netdev_increment_features(vlan_features, 4793d249d4cSJiri Pirko port->dev->vlan_features, 4803d249d4cSJiri Pirko TEAM_VLAN_FEATURES); 4813d249d4cSJiri Pirko 4823d249d4cSJiri Pirko if (port->dev->hard_header_len > max_hard_header_len) 4833d249d4cSJiri Pirko max_hard_header_len = port->dev->hard_header_len; 4843d249d4cSJiri Pirko } 4853d249d4cSJiri Pirko 4863d249d4cSJiri Pirko team->dev->vlan_features = vlan_features; 4873d249d4cSJiri Pirko team->dev->hard_header_len = max_hard_header_len; 4883d249d4cSJiri Pirko 4893d249d4cSJiri Pirko netdev_change_features(team->dev); 4903d249d4cSJiri Pirko } 4913d249d4cSJiri Pirko 4923d249d4cSJiri Pirko static void team_compute_features(struct team *team) 4933d249d4cSJiri Pirko { 49461dc3461SJiri Pirko mutex_lock(&team->lock); 4953d249d4cSJiri Pirko __team_compute_features(team); 49661dc3461SJiri Pirko mutex_unlock(&team->lock); 4973d249d4cSJiri Pirko } 4983d249d4cSJiri Pirko 4993d249d4cSJiri Pirko static int team_port_enter(struct team *team, struct team_port *port) 5003d249d4cSJiri Pirko { 5013d249d4cSJiri Pirko int err = 0; 5023d249d4cSJiri Pirko 5033d249d4cSJiri Pirko dev_hold(team->dev); 5043d249d4cSJiri Pirko port->dev->priv_flags |= IFF_TEAM_PORT; 5053d249d4cSJiri Pirko if (team->ops.port_enter) { 5063d249d4cSJiri Pirko err = team->ops.port_enter(team, port); 5073d249d4cSJiri Pirko if (err) { 5083d249d4cSJiri Pirko netdev_err(team->dev, "Device %s failed to enter team mode\n", 5093d249d4cSJiri Pirko port->dev->name); 5103d249d4cSJiri Pirko goto err_port_enter; 5113d249d4cSJiri Pirko } 5123d249d4cSJiri Pirko } 5133d249d4cSJiri Pirko 5143d249d4cSJiri Pirko return 0; 5153d249d4cSJiri Pirko 5163d249d4cSJiri Pirko err_port_enter: 5173d249d4cSJiri Pirko port->dev->priv_flags &= ~IFF_TEAM_PORT; 5183d249d4cSJiri Pirko dev_put(team->dev); 5193d249d4cSJiri Pirko 5203d249d4cSJiri Pirko return err; 5213d249d4cSJiri Pirko } 5223d249d4cSJiri Pirko 5233d249d4cSJiri Pirko static void team_port_leave(struct team *team, struct team_port *port) 5243d249d4cSJiri Pirko { 5253d249d4cSJiri Pirko if (team->ops.port_leave) 5263d249d4cSJiri Pirko team->ops.port_leave(team, port); 5273d249d4cSJiri Pirko port->dev->priv_flags &= ~IFF_TEAM_PORT; 5283d249d4cSJiri Pirko dev_put(team->dev); 5293d249d4cSJiri Pirko } 5303d249d4cSJiri Pirko 5313d249d4cSJiri Pirko static void __team_port_change_check(struct team_port *port, bool linkup); 5323d249d4cSJiri Pirko 5333d249d4cSJiri Pirko static int team_port_add(struct team *team, struct net_device *port_dev) 5343d249d4cSJiri Pirko { 5353d249d4cSJiri Pirko struct net_device *dev = team->dev; 5363d249d4cSJiri Pirko struct team_port *port; 5373d249d4cSJiri Pirko char *portname = port_dev->name; 5383d249d4cSJiri Pirko int err; 5393d249d4cSJiri Pirko 5403d249d4cSJiri Pirko if (port_dev->flags & IFF_LOOPBACK || 5413d249d4cSJiri Pirko port_dev->type != ARPHRD_ETHER) { 5423d249d4cSJiri Pirko netdev_err(dev, "Device %s is of an unsupported type\n", 5433d249d4cSJiri Pirko portname); 5443d249d4cSJiri Pirko return -EINVAL; 5453d249d4cSJiri Pirko } 5463d249d4cSJiri Pirko 5473d249d4cSJiri Pirko if (team_port_exists(port_dev)) { 5483d249d4cSJiri Pirko netdev_err(dev, "Device %s is already a port " 5493d249d4cSJiri Pirko "of a team device\n", portname); 5503d249d4cSJiri Pirko return -EBUSY; 5513d249d4cSJiri Pirko } 5523d249d4cSJiri Pirko 5533d249d4cSJiri Pirko if (port_dev->flags & IFF_UP) { 5543d249d4cSJiri Pirko netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n", 5553d249d4cSJiri Pirko portname); 5563d249d4cSJiri Pirko return -EBUSY; 5573d249d4cSJiri Pirko } 5583d249d4cSJiri Pirko 5593d249d4cSJiri Pirko port = kzalloc(sizeof(struct team_port), GFP_KERNEL); 5603d249d4cSJiri Pirko if (!port) 5613d249d4cSJiri Pirko return -ENOMEM; 5623d249d4cSJiri Pirko 5633d249d4cSJiri Pirko port->dev = port_dev; 5643d249d4cSJiri Pirko port->team = team; 5653d249d4cSJiri Pirko 5663d249d4cSJiri Pirko port->orig.mtu = port_dev->mtu; 5673d249d4cSJiri Pirko err = dev_set_mtu(port_dev, dev->mtu); 5683d249d4cSJiri Pirko if (err) { 5693d249d4cSJiri Pirko netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err); 5703d249d4cSJiri Pirko goto err_set_mtu; 5713d249d4cSJiri Pirko } 5723d249d4cSJiri Pirko 5733d249d4cSJiri Pirko memcpy(port->orig.dev_addr, port_dev->dev_addr, ETH_ALEN); 5743d249d4cSJiri Pirko 5753d249d4cSJiri Pirko err = team_port_enter(team, port); 5763d249d4cSJiri Pirko if (err) { 5773d249d4cSJiri Pirko netdev_err(dev, "Device %s failed to enter team mode\n", 5783d249d4cSJiri Pirko portname); 5793d249d4cSJiri Pirko goto err_port_enter; 5803d249d4cSJiri Pirko } 5813d249d4cSJiri Pirko 5823d249d4cSJiri Pirko err = dev_open(port_dev); 5833d249d4cSJiri Pirko if (err) { 5843d249d4cSJiri Pirko netdev_dbg(dev, "Device %s opening failed\n", 5853d249d4cSJiri Pirko portname); 5863d249d4cSJiri Pirko goto err_dev_open; 5873d249d4cSJiri Pirko } 5883d249d4cSJiri Pirko 5893d249d4cSJiri Pirko err = netdev_set_master(port_dev, dev); 5903d249d4cSJiri Pirko if (err) { 5913d249d4cSJiri Pirko netdev_err(dev, "Device %s failed to set master\n", portname); 5923d249d4cSJiri Pirko goto err_set_master; 5933d249d4cSJiri Pirko } 5943d249d4cSJiri Pirko 5953d249d4cSJiri Pirko err = netdev_rx_handler_register(port_dev, team_handle_frame, 5963d249d4cSJiri Pirko port); 5973d249d4cSJiri Pirko if (err) { 5983d249d4cSJiri Pirko netdev_err(dev, "Device %s failed to register rx_handler\n", 5993d249d4cSJiri Pirko portname); 6003d249d4cSJiri Pirko goto err_handler_register; 6013d249d4cSJiri Pirko } 6023d249d4cSJiri Pirko 6033d249d4cSJiri Pirko team_port_list_add_port(team, port); 6043d249d4cSJiri Pirko team_adjust_ops(team); 6053d249d4cSJiri Pirko __team_compute_features(team); 6063d249d4cSJiri Pirko __team_port_change_check(port, !!netif_carrier_ok(port_dev)); 6073d249d4cSJiri Pirko 6083d249d4cSJiri Pirko netdev_info(dev, "Port device %s added\n", portname); 6093d249d4cSJiri Pirko 6103d249d4cSJiri Pirko return 0; 6113d249d4cSJiri Pirko 6123d249d4cSJiri Pirko err_handler_register: 6133d249d4cSJiri Pirko netdev_set_master(port_dev, NULL); 6143d249d4cSJiri Pirko 6153d249d4cSJiri Pirko err_set_master: 6163d249d4cSJiri Pirko dev_close(port_dev); 6173d249d4cSJiri Pirko 6183d249d4cSJiri Pirko err_dev_open: 6193d249d4cSJiri Pirko team_port_leave(team, port); 6203d249d4cSJiri Pirko team_port_set_orig_mac(port); 6213d249d4cSJiri Pirko 6223d249d4cSJiri Pirko err_port_enter: 6233d249d4cSJiri Pirko dev_set_mtu(port_dev, port->orig.mtu); 6243d249d4cSJiri Pirko 6253d249d4cSJiri Pirko err_set_mtu: 6263d249d4cSJiri Pirko kfree(port); 6273d249d4cSJiri Pirko 6283d249d4cSJiri Pirko return err; 6293d249d4cSJiri Pirko } 6303d249d4cSJiri Pirko 6313d249d4cSJiri Pirko static int team_port_del(struct team *team, struct net_device *port_dev) 6323d249d4cSJiri Pirko { 6333d249d4cSJiri Pirko struct net_device *dev = team->dev; 6343d249d4cSJiri Pirko struct team_port *port; 6353d249d4cSJiri Pirko char *portname = port_dev->name; 6363d249d4cSJiri Pirko 6373d249d4cSJiri Pirko port = team_port_get_rtnl(port_dev); 6383d249d4cSJiri Pirko if (!port || !team_port_find(team, port)) { 6393d249d4cSJiri Pirko netdev_err(dev, "Device %s does not act as a port of this team\n", 6403d249d4cSJiri Pirko portname); 6413d249d4cSJiri Pirko return -ENOENT; 6423d249d4cSJiri Pirko } 6433d249d4cSJiri Pirko 6443d249d4cSJiri Pirko __team_port_change_check(port, false); 6453d249d4cSJiri Pirko team_port_list_del_port(team, port); 6463d249d4cSJiri Pirko team_adjust_ops(team); 6473d249d4cSJiri Pirko netdev_rx_handler_unregister(port_dev); 6483d249d4cSJiri Pirko netdev_set_master(port_dev, NULL); 6493d249d4cSJiri Pirko dev_close(port_dev); 6503d249d4cSJiri Pirko team_port_leave(team, port); 6513d249d4cSJiri Pirko team_port_set_orig_mac(port); 6523d249d4cSJiri Pirko dev_set_mtu(port_dev, port->orig.mtu); 6533d249d4cSJiri Pirko synchronize_rcu(); 6543d249d4cSJiri Pirko kfree(port); 6553d249d4cSJiri Pirko netdev_info(dev, "Port device %s removed\n", portname); 6563d249d4cSJiri Pirko __team_compute_features(team); 6573d249d4cSJiri Pirko 6583d249d4cSJiri Pirko return 0; 6593d249d4cSJiri Pirko } 6603d249d4cSJiri Pirko 6613d249d4cSJiri Pirko 6623d249d4cSJiri Pirko /***************** 6633d249d4cSJiri Pirko * Net device ops 6643d249d4cSJiri Pirko *****************/ 6653d249d4cSJiri Pirko 6663d249d4cSJiri Pirko static const char team_no_mode_kind[] = "*NOMODE*"; 6673d249d4cSJiri Pirko 6683d249d4cSJiri Pirko static int team_mode_option_get(struct team *team, void *arg) 6693d249d4cSJiri Pirko { 6703d249d4cSJiri Pirko const char **str = arg; 6713d249d4cSJiri Pirko 6723d249d4cSJiri Pirko *str = team->mode ? team->mode->kind : team_no_mode_kind; 6733d249d4cSJiri Pirko return 0; 6743d249d4cSJiri Pirko } 6753d249d4cSJiri Pirko 6763d249d4cSJiri Pirko static int team_mode_option_set(struct team *team, void *arg) 6773d249d4cSJiri Pirko { 6783d249d4cSJiri Pirko const char **str = arg; 6793d249d4cSJiri Pirko 6803d249d4cSJiri Pirko return team_change_mode(team, *str); 6813d249d4cSJiri Pirko } 6823d249d4cSJiri Pirko 683358b8382SJiri Pirko static const struct team_option team_options[] = { 6843d249d4cSJiri Pirko { 6853d249d4cSJiri Pirko .name = "mode", 6863d249d4cSJiri Pirko .type = TEAM_OPTION_TYPE_STRING, 6873d249d4cSJiri Pirko .getter = team_mode_option_get, 6883d249d4cSJiri Pirko .setter = team_mode_option_set, 6893d249d4cSJiri Pirko }, 6903d249d4cSJiri Pirko }; 6913d249d4cSJiri Pirko 6923d249d4cSJiri Pirko static int team_init(struct net_device *dev) 6933d249d4cSJiri Pirko { 6943d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 6953d249d4cSJiri Pirko int i; 696358b8382SJiri Pirko int err; 6973d249d4cSJiri Pirko 6983d249d4cSJiri Pirko team->dev = dev; 69961dc3461SJiri Pirko mutex_init(&team->lock); 7003d249d4cSJiri Pirko 7013d249d4cSJiri Pirko team->pcpu_stats = alloc_percpu(struct team_pcpu_stats); 7023d249d4cSJiri Pirko if (!team->pcpu_stats) 7033d249d4cSJiri Pirko return -ENOMEM; 7043d249d4cSJiri Pirko 7053d249d4cSJiri Pirko for (i = 0; i < TEAM_PORT_HASHENTRIES; i++) 7063d249d4cSJiri Pirko INIT_HLIST_HEAD(&team->port_hlist[i]); 7073d249d4cSJiri Pirko INIT_LIST_HEAD(&team->port_list); 7083d249d4cSJiri Pirko 7093d249d4cSJiri Pirko team_adjust_ops(team); 7103d249d4cSJiri Pirko 7113d249d4cSJiri Pirko INIT_LIST_HEAD(&team->option_list); 712358b8382SJiri Pirko err = team_options_register(team, team_options, ARRAY_SIZE(team_options)); 713358b8382SJiri Pirko if (err) 714358b8382SJiri Pirko goto err_options_register; 7153d249d4cSJiri Pirko netif_carrier_off(dev); 7163d249d4cSJiri Pirko 7173d249d4cSJiri Pirko return 0; 718358b8382SJiri Pirko 719358b8382SJiri Pirko err_options_register: 720358b8382SJiri Pirko free_percpu(team->pcpu_stats); 721358b8382SJiri Pirko 722358b8382SJiri Pirko return err; 7233d249d4cSJiri Pirko } 7243d249d4cSJiri Pirko 7253d249d4cSJiri Pirko static void team_uninit(struct net_device *dev) 7263d249d4cSJiri Pirko { 7273d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 7283d249d4cSJiri Pirko struct team_port *port; 7293d249d4cSJiri Pirko struct team_port *tmp; 7303d249d4cSJiri Pirko 73161dc3461SJiri Pirko mutex_lock(&team->lock); 7323d249d4cSJiri Pirko list_for_each_entry_safe(port, tmp, &team->port_list, list) 7333d249d4cSJiri Pirko team_port_del(team, port->dev); 7343d249d4cSJiri Pirko 7353d249d4cSJiri Pirko __team_change_mode(team, NULL); /* cleanup */ 7363d249d4cSJiri Pirko __team_options_unregister(team, team_options, ARRAY_SIZE(team_options)); 73761dc3461SJiri Pirko mutex_unlock(&team->lock); 7383d249d4cSJiri Pirko } 7393d249d4cSJiri Pirko 7403d249d4cSJiri Pirko static void team_destructor(struct net_device *dev) 7413d249d4cSJiri Pirko { 7423d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 7433d249d4cSJiri Pirko 7443d249d4cSJiri Pirko free_percpu(team->pcpu_stats); 7453d249d4cSJiri Pirko free_netdev(dev); 7463d249d4cSJiri Pirko } 7473d249d4cSJiri Pirko 7483d249d4cSJiri Pirko static int team_open(struct net_device *dev) 7493d249d4cSJiri Pirko { 7503d249d4cSJiri Pirko netif_carrier_on(dev); 7513d249d4cSJiri Pirko return 0; 7523d249d4cSJiri Pirko } 7533d249d4cSJiri Pirko 7543d249d4cSJiri Pirko static int team_close(struct net_device *dev) 7553d249d4cSJiri Pirko { 7563d249d4cSJiri Pirko netif_carrier_off(dev); 7573d249d4cSJiri Pirko return 0; 7583d249d4cSJiri Pirko } 7593d249d4cSJiri Pirko 7603d249d4cSJiri Pirko /* 7613d249d4cSJiri Pirko * note: already called with rcu_read_lock 7623d249d4cSJiri Pirko */ 7633d249d4cSJiri Pirko static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev) 7643d249d4cSJiri Pirko { 7653d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 7663d249d4cSJiri Pirko bool tx_success = false; 7673d249d4cSJiri Pirko unsigned int len = skb->len; 7683d249d4cSJiri Pirko 7693d249d4cSJiri Pirko tx_success = team->ops.transmit(team, skb); 7703d249d4cSJiri Pirko if (tx_success) { 7713d249d4cSJiri Pirko struct team_pcpu_stats *pcpu_stats; 7723d249d4cSJiri Pirko 7733d249d4cSJiri Pirko pcpu_stats = this_cpu_ptr(team->pcpu_stats); 7743d249d4cSJiri Pirko u64_stats_update_begin(&pcpu_stats->syncp); 7753d249d4cSJiri Pirko pcpu_stats->tx_packets++; 7763d249d4cSJiri Pirko pcpu_stats->tx_bytes += len; 7773d249d4cSJiri Pirko u64_stats_update_end(&pcpu_stats->syncp); 7783d249d4cSJiri Pirko } else { 7793d249d4cSJiri Pirko this_cpu_inc(team->pcpu_stats->tx_dropped); 7803d249d4cSJiri Pirko } 7813d249d4cSJiri Pirko 7823d249d4cSJiri Pirko return NETDEV_TX_OK; 7833d249d4cSJiri Pirko } 7843d249d4cSJiri Pirko 7853d249d4cSJiri Pirko static void team_change_rx_flags(struct net_device *dev, int change) 7863d249d4cSJiri Pirko { 7873d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 7883d249d4cSJiri Pirko struct team_port *port; 7893d249d4cSJiri Pirko int inc; 7903d249d4cSJiri Pirko 7913d249d4cSJiri Pirko rcu_read_lock(); 7923d249d4cSJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) { 7933d249d4cSJiri Pirko if (change & IFF_PROMISC) { 7943d249d4cSJiri Pirko inc = dev->flags & IFF_PROMISC ? 1 : -1; 7953d249d4cSJiri Pirko dev_set_promiscuity(port->dev, inc); 7963d249d4cSJiri Pirko } 7973d249d4cSJiri Pirko if (change & IFF_ALLMULTI) { 7983d249d4cSJiri Pirko inc = dev->flags & IFF_ALLMULTI ? 1 : -1; 7993d249d4cSJiri Pirko dev_set_allmulti(port->dev, inc); 8003d249d4cSJiri Pirko } 8013d249d4cSJiri Pirko } 8023d249d4cSJiri Pirko rcu_read_unlock(); 8033d249d4cSJiri Pirko } 8043d249d4cSJiri Pirko 8053d249d4cSJiri Pirko static void team_set_rx_mode(struct net_device *dev) 8063d249d4cSJiri Pirko { 8073d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 8083d249d4cSJiri Pirko struct team_port *port; 8093d249d4cSJiri Pirko 8103d249d4cSJiri Pirko rcu_read_lock(); 8113d249d4cSJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) { 8123d249d4cSJiri Pirko dev_uc_sync(port->dev, dev); 8133d249d4cSJiri Pirko dev_mc_sync(port->dev, dev); 8143d249d4cSJiri Pirko } 8153d249d4cSJiri Pirko rcu_read_unlock(); 8163d249d4cSJiri Pirko } 8173d249d4cSJiri Pirko 8183d249d4cSJiri Pirko static int team_set_mac_address(struct net_device *dev, void *p) 8193d249d4cSJiri Pirko { 8203d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 8213d249d4cSJiri Pirko struct team_port *port; 8223d249d4cSJiri Pirko struct sockaddr *addr = p; 8233d249d4cSJiri Pirko 8243d249d4cSJiri Pirko memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); 8253d249d4cSJiri Pirko rcu_read_lock(); 8263d249d4cSJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) 8273d249d4cSJiri Pirko if (team->ops.port_change_mac) 8283d249d4cSJiri Pirko team->ops.port_change_mac(team, port); 8293d249d4cSJiri Pirko rcu_read_unlock(); 8303d249d4cSJiri Pirko return 0; 8313d249d4cSJiri Pirko } 8323d249d4cSJiri Pirko 8333d249d4cSJiri Pirko static int team_change_mtu(struct net_device *dev, int new_mtu) 8343d249d4cSJiri Pirko { 8353d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 8363d249d4cSJiri Pirko struct team_port *port; 8373d249d4cSJiri Pirko int err; 8383d249d4cSJiri Pirko 8393d249d4cSJiri Pirko /* 8403d249d4cSJiri Pirko * Alhough this is reader, it's guarded by team lock. It's not possible 8413d249d4cSJiri Pirko * to traverse list in reverse under rcu_read_lock 8423d249d4cSJiri Pirko */ 84361dc3461SJiri Pirko mutex_lock(&team->lock); 8443d249d4cSJiri Pirko list_for_each_entry(port, &team->port_list, list) { 8453d249d4cSJiri Pirko err = dev_set_mtu(port->dev, new_mtu); 8463d249d4cSJiri Pirko if (err) { 8473d249d4cSJiri Pirko netdev_err(dev, "Device %s failed to change mtu", 8483d249d4cSJiri Pirko port->dev->name); 8493d249d4cSJiri Pirko goto unwind; 8503d249d4cSJiri Pirko } 8513d249d4cSJiri Pirko } 85261dc3461SJiri Pirko mutex_unlock(&team->lock); 8533d249d4cSJiri Pirko 8543d249d4cSJiri Pirko dev->mtu = new_mtu; 8553d249d4cSJiri Pirko 8563d249d4cSJiri Pirko return 0; 8573d249d4cSJiri Pirko 8583d249d4cSJiri Pirko unwind: 8593d249d4cSJiri Pirko list_for_each_entry_continue_reverse(port, &team->port_list, list) 8603d249d4cSJiri Pirko dev_set_mtu(port->dev, dev->mtu); 86161dc3461SJiri Pirko mutex_unlock(&team->lock); 8623d249d4cSJiri Pirko 8633d249d4cSJiri Pirko return err; 8643d249d4cSJiri Pirko } 8653d249d4cSJiri Pirko 8663d249d4cSJiri Pirko static struct rtnl_link_stats64 * 8673d249d4cSJiri Pirko team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) 8683d249d4cSJiri Pirko { 8693d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 8703d249d4cSJiri Pirko struct team_pcpu_stats *p; 8713d249d4cSJiri Pirko u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; 8723d249d4cSJiri Pirko u32 rx_dropped = 0, tx_dropped = 0; 8733d249d4cSJiri Pirko unsigned int start; 8743d249d4cSJiri Pirko int i; 8753d249d4cSJiri Pirko 8763d249d4cSJiri Pirko for_each_possible_cpu(i) { 8773d249d4cSJiri Pirko p = per_cpu_ptr(team->pcpu_stats, i); 8783d249d4cSJiri Pirko do { 8793d249d4cSJiri Pirko start = u64_stats_fetch_begin_bh(&p->syncp); 8803d249d4cSJiri Pirko rx_packets = p->rx_packets; 8813d249d4cSJiri Pirko rx_bytes = p->rx_bytes; 8823d249d4cSJiri Pirko rx_multicast = p->rx_multicast; 8833d249d4cSJiri Pirko tx_packets = p->tx_packets; 8843d249d4cSJiri Pirko tx_bytes = p->tx_bytes; 8853d249d4cSJiri Pirko } while (u64_stats_fetch_retry_bh(&p->syncp, start)); 8863d249d4cSJiri Pirko 8873d249d4cSJiri Pirko stats->rx_packets += rx_packets; 8883d249d4cSJiri Pirko stats->rx_bytes += rx_bytes; 8893d249d4cSJiri Pirko stats->multicast += rx_multicast; 8903d249d4cSJiri Pirko stats->tx_packets += tx_packets; 8913d249d4cSJiri Pirko stats->tx_bytes += tx_bytes; 8923d249d4cSJiri Pirko /* 8933d249d4cSJiri Pirko * rx_dropped & tx_dropped are u32, updated 8943d249d4cSJiri Pirko * without syncp protection. 8953d249d4cSJiri Pirko */ 8963d249d4cSJiri Pirko rx_dropped += p->rx_dropped; 8973d249d4cSJiri Pirko tx_dropped += p->tx_dropped; 8983d249d4cSJiri Pirko } 8993d249d4cSJiri Pirko stats->rx_dropped = rx_dropped; 9003d249d4cSJiri Pirko stats->tx_dropped = tx_dropped; 9013d249d4cSJiri Pirko return stats; 9023d249d4cSJiri Pirko } 9033d249d4cSJiri Pirko 9043d249d4cSJiri Pirko static void team_vlan_rx_add_vid(struct net_device *dev, uint16_t vid) 9053d249d4cSJiri Pirko { 9063d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 9073d249d4cSJiri Pirko struct team_port *port; 9083d249d4cSJiri Pirko 9093d249d4cSJiri Pirko rcu_read_lock(); 9103d249d4cSJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) { 9113d249d4cSJiri Pirko const struct net_device_ops *ops = port->dev->netdev_ops; 9123d249d4cSJiri Pirko 9133d249d4cSJiri Pirko if (ops->ndo_vlan_rx_add_vid) 9143d249d4cSJiri Pirko ops->ndo_vlan_rx_add_vid(port->dev, vid); 9153d249d4cSJiri Pirko } 9163d249d4cSJiri Pirko rcu_read_unlock(); 9173d249d4cSJiri Pirko } 9183d249d4cSJiri Pirko 9193d249d4cSJiri Pirko static void team_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid) 9203d249d4cSJiri Pirko { 9213d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 9223d249d4cSJiri Pirko struct team_port *port; 9233d249d4cSJiri Pirko 9243d249d4cSJiri Pirko rcu_read_lock(); 9253d249d4cSJiri Pirko list_for_each_entry_rcu(port, &team->port_list, list) { 9263d249d4cSJiri Pirko const struct net_device_ops *ops = port->dev->netdev_ops; 9273d249d4cSJiri Pirko 9283d249d4cSJiri Pirko if (ops->ndo_vlan_rx_kill_vid) 9293d249d4cSJiri Pirko ops->ndo_vlan_rx_kill_vid(port->dev, vid); 9303d249d4cSJiri Pirko } 9313d249d4cSJiri Pirko rcu_read_unlock(); 9323d249d4cSJiri Pirko } 9333d249d4cSJiri Pirko 9343d249d4cSJiri Pirko static int team_add_slave(struct net_device *dev, struct net_device *port_dev) 9353d249d4cSJiri Pirko { 9363d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 9373d249d4cSJiri Pirko int err; 9383d249d4cSJiri Pirko 93961dc3461SJiri Pirko mutex_lock(&team->lock); 9403d249d4cSJiri Pirko err = team_port_add(team, port_dev); 94161dc3461SJiri Pirko mutex_unlock(&team->lock); 9423d249d4cSJiri Pirko return err; 9433d249d4cSJiri Pirko } 9443d249d4cSJiri Pirko 9453d249d4cSJiri Pirko static int team_del_slave(struct net_device *dev, struct net_device *port_dev) 9463d249d4cSJiri Pirko { 9473d249d4cSJiri Pirko struct team *team = netdev_priv(dev); 9483d249d4cSJiri Pirko int err; 9493d249d4cSJiri Pirko 95061dc3461SJiri Pirko mutex_lock(&team->lock); 9513d249d4cSJiri Pirko err = team_port_del(team, port_dev); 95261dc3461SJiri Pirko mutex_unlock(&team->lock); 9533d249d4cSJiri Pirko return err; 9543d249d4cSJiri Pirko } 9553d249d4cSJiri Pirko 9563d249d4cSJiri Pirko static const struct net_device_ops team_netdev_ops = { 9573d249d4cSJiri Pirko .ndo_init = team_init, 9583d249d4cSJiri Pirko .ndo_uninit = team_uninit, 9593d249d4cSJiri Pirko .ndo_open = team_open, 9603d249d4cSJiri Pirko .ndo_stop = team_close, 9613d249d4cSJiri Pirko .ndo_start_xmit = team_xmit, 9623d249d4cSJiri Pirko .ndo_change_rx_flags = team_change_rx_flags, 9633d249d4cSJiri Pirko .ndo_set_rx_mode = team_set_rx_mode, 9643d249d4cSJiri Pirko .ndo_set_mac_address = team_set_mac_address, 9653d249d4cSJiri Pirko .ndo_change_mtu = team_change_mtu, 9663d249d4cSJiri Pirko .ndo_get_stats64 = team_get_stats64, 9673d249d4cSJiri Pirko .ndo_vlan_rx_add_vid = team_vlan_rx_add_vid, 9683d249d4cSJiri Pirko .ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid, 9693d249d4cSJiri Pirko .ndo_add_slave = team_add_slave, 9703d249d4cSJiri Pirko .ndo_del_slave = team_del_slave, 9713d249d4cSJiri Pirko }; 9723d249d4cSJiri Pirko 9733d249d4cSJiri Pirko 9743d249d4cSJiri Pirko /*********************** 9753d249d4cSJiri Pirko * rt netlink interface 9763d249d4cSJiri Pirko ***********************/ 9773d249d4cSJiri Pirko 9783d249d4cSJiri Pirko static void team_setup(struct net_device *dev) 9793d249d4cSJiri Pirko { 9803d249d4cSJiri Pirko ether_setup(dev); 9813d249d4cSJiri Pirko 9823d249d4cSJiri Pirko dev->netdev_ops = &team_netdev_ops; 9833d249d4cSJiri Pirko dev->destructor = team_destructor; 9843d249d4cSJiri Pirko dev->tx_queue_len = 0; 9853d249d4cSJiri Pirko dev->flags |= IFF_MULTICAST; 9863d249d4cSJiri Pirko dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); 9873d249d4cSJiri Pirko 9883d249d4cSJiri Pirko /* 9893d249d4cSJiri Pirko * Indicate we support unicast address filtering. That way core won't 9903d249d4cSJiri Pirko * bring us to promisc mode in case a unicast addr is added. 9913d249d4cSJiri Pirko * Let this up to underlay drivers. 9923d249d4cSJiri Pirko */ 9933d249d4cSJiri Pirko dev->priv_flags |= IFF_UNICAST_FLT; 9943d249d4cSJiri Pirko 9953d249d4cSJiri Pirko dev->features |= NETIF_F_LLTX; 9963d249d4cSJiri Pirko dev->features |= NETIF_F_GRO; 9973d249d4cSJiri Pirko dev->hw_features = NETIF_F_HW_VLAN_TX | 9983d249d4cSJiri Pirko NETIF_F_HW_VLAN_RX | 9993d249d4cSJiri Pirko NETIF_F_HW_VLAN_FILTER; 10003d249d4cSJiri Pirko 10013d249d4cSJiri Pirko dev->features |= dev->hw_features; 10023d249d4cSJiri Pirko } 10033d249d4cSJiri Pirko 10043d249d4cSJiri Pirko static int team_newlink(struct net *src_net, struct net_device *dev, 10053d249d4cSJiri Pirko struct nlattr *tb[], struct nlattr *data[]) 10063d249d4cSJiri Pirko { 10073d249d4cSJiri Pirko int err; 10083d249d4cSJiri Pirko 10093d249d4cSJiri Pirko if (tb[IFLA_ADDRESS] == NULL) 10103d249d4cSJiri Pirko random_ether_addr(dev->dev_addr); 10113d249d4cSJiri Pirko 10123d249d4cSJiri Pirko err = register_netdevice(dev); 10133d249d4cSJiri Pirko if (err) 10143d249d4cSJiri Pirko return err; 10153d249d4cSJiri Pirko 10163d249d4cSJiri Pirko return 0; 10173d249d4cSJiri Pirko } 10183d249d4cSJiri Pirko 10193d249d4cSJiri Pirko static int team_validate(struct nlattr *tb[], struct nlattr *data[]) 10203d249d4cSJiri Pirko { 10213d249d4cSJiri Pirko if (tb[IFLA_ADDRESS]) { 10223d249d4cSJiri Pirko if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) 10233d249d4cSJiri Pirko return -EINVAL; 10243d249d4cSJiri Pirko if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) 10253d249d4cSJiri Pirko return -EADDRNOTAVAIL; 10263d249d4cSJiri Pirko } 10273d249d4cSJiri Pirko return 0; 10283d249d4cSJiri Pirko } 10293d249d4cSJiri Pirko 10303d249d4cSJiri Pirko static struct rtnl_link_ops team_link_ops __read_mostly = { 10313d249d4cSJiri Pirko .kind = DRV_NAME, 10323d249d4cSJiri Pirko .priv_size = sizeof(struct team), 10333d249d4cSJiri Pirko .setup = team_setup, 10343d249d4cSJiri Pirko .newlink = team_newlink, 10353d249d4cSJiri Pirko .validate = team_validate, 10363d249d4cSJiri Pirko }; 10373d249d4cSJiri Pirko 10383d249d4cSJiri Pirko 10393d249d4cSJiri Pirko /*********************************** 10403d249d4cSJiri Pirko * Generic netlink custom interface 10413d249d4cSJiri Pirko ***********************************/ 10423d249d4cSJiri Pirko 10433d249d4cSJiri Pirko static struct genl_family team_nl_family = { 10443d249d4cSJiri Pirko .id = GENL_ID_GENERATE, 10453d249d4cSJiri Pirko .name = TEAM_GENL_NAME, 10463d249d4cSJiri Pirko .version = TEAM_GENL_VERSION, 10473d249d4cSJiri Pirko .maxattr = TEAM_ATTR_MAX, 10483d249d4cSJiri Pirko .netnsok = true, 10493d249d4cSJiri Pirko }; 10503d249d4cSJiri Pirko 10513d249d4cSJiri Pirko static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = { 10523d249d4cSJiri Pirko [TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, }, 10533d249d4cSJiri Pirko [TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 }, 10543d249d4cSJiri Pirko [TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED }, 10553d249d4cSJiri Pirko [TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED }, 10563d249d4cSJiri Pirko }; 10573d249d4cSJiri Pirko 10583d249d4cSJiri Pirko static const struct nla_policy 10593d249d4cSJiri Pirko team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = { 10603d249d4cSJiri Pirko [TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, }, 10613d249d4cSJiri Pirko [TEAM_ATTR_OPTION_NAME] = { 10623d249d4cSJiri Pirko .type = NLA_STRING, 10633d249d4cSJiri Pirko .len = TEAM_STRING_MAX_LEN, 10643d249d4cSJiri Pirko }, 10653d249d4cSJiri Pirko [TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG }, 10663d249d4cSJiri Pirko [TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 }, 10673d249d4cSJiri Pirko [TEAM_ATTR_OPTION_DATA] = { 10683d249d4cSJiri Pirko .type = NLA_BINARY, 10693d249d4cSJiri Pirko .len = TEAM_STRING_MAX_LEN, 10703d249d4cSJiri Pirko }, 10713d249d4cSJiri Pirko }; 10723d249d4cSJiri Pirko 10733d249d4cSJiri Pirko static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info) 10743d249d4cSJiri Pirko { 10753d249d4cSJiri Pirko struct sk_buff *msg; 10763d249d4cSJiri Pirko void *hdr; 10773d249d4cSJiri Pirko int err; 10783d249d4cSJiri Pirko 10793d249d4cSJiri Pirko msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 10803d249d4cSJiri Pirko if (!msg) 10813d249d4cSJiri Pirko return -ENOMEM; 10823d249d4cSJiri Pirko 10833d249d4cSJiri Pirko hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq, 10843d249d4cSJiri Pirko &team_nl_family, 0, TEAM_CMD_NOOP); 10853d249d4cSJiri Pirko if (IS_ERR(hdr)) { 10863d249d4cSJiri Pirko err = PTR_ERR(hdr); 10873d249d4cSJiri Pirko goto err_msg_put; 10883d249d4cSJiri Pirko } 10893d249d4cSJiri Pirko 10903d249d4cSJiri Pirko genlmsg_end(msg, hdr); 10913d249d4cSJiri Pirko 10923d249d4cSJiri Pirko return genlmsg_unicast(genl_info_net(info), msg, info->snd_pid); 10933d249d4cSJiri Pirko 10943d249d4cSJiri Pirko err_msg_put: 10953d249d4cSJiri Pirko nlmsg_free(msg); 10963d249d4cSJiri Pirko 10973d249d4cSJiri Pirko return err; 10983d249d4cSJiri Pirko } 10993d249d4cSJiri Pirko 11003d249d4cSJiri Pirko /* 11013d249d4cSJiri Pirko * Netlink cmd functions should be locked by following two functions. 11028c0713a5SJiri Pirko * Since dev gets held here, that ensures dev won't disappear in between. 11033d249d4cSJiri Pirko */ 11043d249d4cSJiri Pirko static struct team *team_nl_team_get(struct genl_info *info) 11053d249d4cSJiri Pirko { 11063d249d4cSJiri Pirko struct net *net = genl_info_net(info); 11073d249d4cSJiri Pirko int ifindex; 11083d249d4cSJiri Pirko struct net_device *dev; 11093d249d4cSJiri Pirko struct team *team; 11103d249d4cSJiri Pirko 11113d249d4cSJiri Pirko if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX]) 11123d249d4cSJiri Pirko return NULL; 11133d249d4cSJiri Pirko 11143d249d4cSJiri Pirko ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]); 11158c0713a5SJiri Pirko dev = dev_get_by_index(net, ifindex); 11163d249d4cSJiri Pirko if (!dev || dev->netdev_ops != &team_netdev_ops) { 11178c0713a5SJiri Pirko if (dev) 11188c0713a5SJiri Pirko dev_put(dev); 11193d249d4cSJiri Pirko return NULL; 11203d249d4cSJiri Pirko } 11213d249d4cSJiri Pirko 11223d249d4cSJiri Pirko team = netdev_priv(dev); 112361dc3461SJiri Pirko mutex_lock(&team->lock); 11243d249d4cSJiri Pirko return team; 11253d249d4cSJiri Pirko } 11263d249d4cSJiri Pirko 11273d249d4cSJiri Pirko static void team_nl_team_put(struct team *team) 11283d249d4cSJiri Pirko { 112961dc3461SJiri Pirko mutex_unlock(&team->lock); 11308c0713a5SJiri Pirko dev_put(team->dev); 11313d249d4cSJiri Pirko } 11323d249d4cSJiri Pirko 11333d249d4cSJiri Pirko static int team_nl_send_generic(struct genl_info *info, struct team *team, 11343d249d4cSJiri Pirko int (*fill_func)(struct sk_buff *skb, 11353d249d4cSJiri Pirko struct genl_info *info, 11363d249d4cSJiri Pirko int flags, struct team *team)) 11373d249d4cSJiri Pirko { 11383d249d4cSJiri Pirko struct sk_buff *skb; 11393d249d4cSJiri Pirko int err; 11403d249d4cSJiri Pirko 11413d249d4cSJiri Pirko skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 11423d249d4cSJiri Pirko if (!skb) 11433d249d4cSJiri Pirko return -ENOMEM; 11443d249d4cSJiri Pirko 11453d249d4cSJiri Pirko err = fill_func(skb, info, NLM_F_ACK, team); 11463d249d4cSJiri Pirko if (err < 0) 11473d249d4cSJiri Pirko goto err_fill; 11483d249d4cSJiri Pirko 11493d249d4cSJiri Pirko err = genlmsg_unicast(genl_info_net(info), skb, info->snd_pid); 11503d249d4cSJiri Pirko return err; 11513d249d4cSJiri Pirko 11523d249d4cSJiri Pirko err_fill: 11533d249d4cSJiri Pirko nlmsg_free(skb); 11543d249d4cSJiri Pirko return err; 11553d249d4cSJiri Pirko } 11563d249d4cSJiri Pirko 11573d249d4cSJiri Pirko static int team_nl_fill_options_get_changed(struct sk_buff *skb, 11583d249d4cSJiri Pirko u32 pid, u32 seq, int flags, 11593d249d4cSJiri Pirko struct team *team, 11603d249d4cSJiri Pirko struct team_option *changed_option) 11613d249d4cSJiri Pirko { 11623d249d4cSJiri Pirko struct nlattr *option_list; 11633d249d4cSJiri Pirko void *hdr; 11643d249d4cSJiri Pirko struct team_option *option; 11653d249d4cSJiri Pirko 11663d249d4cSJiri Pirko hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags, 11673d249d4cSJiri Pirko TEAM_CMD_OPTIONS_GET); 11683d249d4cSJiri Pirko if (IS_ERR(hdr)) 11693d249d4cSJiri Pirko return PTR_ERR(hdr); 11703d249d4cSJiri Pirko 11713d249d4cSJiri Pirko NLA_PUT_U32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex); 11723d249d4cSJiri Pirko option_list = nla_nest_start(skb, TEAM_ATTR_LIST_OPTION); 11733d249d4cSJiri Pirko if (!option_list) 11743d249d4cSJiri Pirko return -EMSGSIZE; 11753d249d4cSJiri Pirko 11763d249d4cSJiri Pirko list_for_each_entry(option, &team->option_list, list) { 11773d249d4cSJiri Pirko struct nlattr *option_item; 11783d249d4cSJiri Pirko long arg; 11793d249d4cSJiri Pirko 11803d249d4cSJiri Pirko option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION); 11813d249d4cSJiri Pirko if (!option_item) 11823d249d4cSJiri Pirko goto nla_put_failure; 11833d249d4cSJiri Pirko NLA_PUT_STRING(skb, TEAM_ATTR_OPTION_NAME, option->name); 11843d249d4cSJiri Pirko if (option == changed_option) 11853d249d4cSJiri Pirko NLA_PUT_FLAG(skb, TEAM_ATTR_OPTION_CHANGED); 11863d249d4cSJiri Pirko switch (option->type) { 11873d249d4cSJiri Pirko case TEAM_OPTION_TYPE_U32: 11883d249d4cSJiri Pirko NLA_PUT_U8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32); 11893d249d4cSJiri Pirko team_option_get(team, option, &arg); 11903d249d4cSJiri Pirko NLA_PUT_U32(skb, TEAM_ATTR_OPTION_DATA, arg); 11913d249d4cSJiri Pirko break; 11923d249d4cSJiri Pirko case TEAM_OPTION_TYPE_STRING: 11933d249d4cSJiri Pirko NLA_PUT_U8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING); 11943d249d4cSJiri Pirko team_option_get(team, option, &arg); 11953d249d4cSJiri Pirko NLA_PUT_STRING(skb, TEAM_ATTR_OPTION_DATA, 11963d249d4cSJiri Pirko (char *) arg); 11973d249d4cSJiri Pirko break; 11983d249d4cSJiri Pirko default: 11993d249d4cSJiri Pirko BUG(); 12003d249d4cSJiri Pirko } 12013d249d4cSJiri Pirko nla_nest_end(skb, option_item); 12023d249d4cSJiri Pirko } 12033d249d4cSJiri Pirko 12043d249d4cSJiri Pirko nla_nest_end(skb, option_list); 12053d249d4cSJiri Pirko return genlmsg_end(skb, hdr); 12063d249d4cSJiri Pirko 12073d249d4cSJiri Pirko nla_put_failure: 12083d249d4cSJiri Pirko genlmsg_cancel(skb, hdr); 12093d249d4cSJiri Pirko return -EMSGSIZE; 12103d249d4cSJiri Pirko } 12113d249d4cSJiri Pirko 12123d249d4cSJiri Pirko static int team_nl_fill_options_get(struct sk_buff *skb, 12133d249d4cSJiri Pirko struct genl_info *info, int flags, 12143d249d4cSJiri Pirko struct team *team) 12153d249d4cSJiri Pirko { 12163d249d4cSJiri Pirko return team_nl_fill_options_get_changed(skb, info->snd_pid, 12173d249d4cSJiri Pirko info->snd_seq, NLM_F_ACK, 12183d249d4cSJiri Pirko team, NULL); 12193d249d4cSJiri Pirko } 12203d249d4cSJiri Pirko 12213d249d4cSJiri Pirko static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info) 12223d249d4cSJiri Pirko { 12233d249d4cSJiri Pirko struct team *team; 12243d249d4cSJiri Pirko int err; 12253d249d4cSJiri Pirko 12263d249d4cSJiri Pirko team = team_nl_team_get(info); 12273d249d4cSJiri Pirko if (!team) 12283d249d4cSJiri Pirko return -EINVAL; 12293d249d4cSJiri Pirko 12303d249d4cSJiri Pirko err = team_nl_send_generic(info, team, team_nl_fill_options_get); 12313d249d4cSJiri Pirko 12323d249d4cSJiri Pirko team_nl_team_put(team); 12333d249d4cSJiri Pirko 12343d249d4cSJiri Pirko return err; 12353d249d4cSJiri Pirko } 12363d249d4cSJiri Pirko 12373d249d4cSJiri Pirko static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info) 12383d249d4cSJiri Pirko { 12393d249d4cSJiri Pirko struct team *team; 12403d249d4cSJiri Pirko int err = 0; 12413d249d4cSJiri Pirko int i; 12423d249d4cSJiri Pirko struct nlattr *nl_option; 12433d249d4cSJiri Pirko 12443d249d4cSJiri Pirko team = team_nl_team_get(info); 12453d249d4cSJiri Pirko if (!team) 12463d249d4cSJiri Pirko return -EINVAL; 12473d249d4cSJiri Pirko 12483d249d4cSJiri Pirko err = -EINVAL; 12493d249d4cSJiri Pirko if (!info->attrs[TEAM_ATTR_LIST_OPTION]) { 12503d249d4cSJiri Pirko err = -EINVAL; 12513d249d4cSJiri Pirko goto team_put; 12523d249d4cSJiri Pirko } 12533d249d4cSJiri Pirko 12543d249d4cSJiri Pirko nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) { 12553d249d4cSJiri Pirko struct nlattr *mode_attrs[TEAM_ATTR_OPTION_MAX + 1]; 12563d249d4cSJiri Pirko enum team_option_type opt_type; 12573d249d4cSJiri Pirko struct team_option *option; 12583d249d4cSJiri Pirko char *opt_name; 12593d249d4cSJiri Pirko bool opt_found = false; 12603d249d4cSJiri Pirko 12613d249d4cSJiri Pirko if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) { 12623d249d4cSJiri Pirko err = -EINVAL; 12633d249d4cSJiri Pirko goto team_put; 12643d249d4cSJiri Pirko } 12653d249d4cSJiri Pirko err = nla_parse_nested(mode_attrs, TEAM_ATTR_OPTION_MAX, 12663d249d4cSJiri Pirko nl_option, team_nl_option_policy); 12673d249d4cSJiri Pirko if (err) 12683d249d4cSJiri Pirko goto team_put; 12693d249d4cSJiri Pirko if (!mode_attrs[TEAM_ATTR_OPTION_NAME] || 12703d249d4cSJiri Pirko !mode_attrs[TEAM_ATTR_OPTION_TYPE] || 12713d249d4cSJiri Pirko !mode_attrs[TEAM_ATTR_OPTION_DATA]) { 12723d249d4cSJiri Pirko err = -EINVAL; 12733d249d4cSJiri Pirko goto team_put; 12743d249d4cSJiri Pirko } 12753d249d4cSJiri Pirko switch (nla_get_u8(mode_attrs[TEAM_ATTR_OPTION_TYPE])) { 12763d249d4cSJiri Pirko case NLA_U32: 12773d249d4cSJiri Pirko opt_type = TEAM_OPTION_TYPE_U32; 12783d249d4cSJiri Pirko break; 12793d249d4cSJiri Pirko case NLA_STRING: 12803d249d4cSJiri Pirko opt_type = TEAM_OPTION_TYPE_STRING; 12813d249d4cSJiri Pirko break; 12823d249d4cSJiri Pirko default: 12833d249d4cSJiri Pirko goto team_put; 12843d249d4cSJiri Pirko } 12853d249d4cSJiri Pirko 12863d249d4cSJiri Pirko opt_name = nla_data(mode_attrs[TEAM_ATTR_OPTION_NAME]); 12873d249d4cSJiri Pirko list_for_each_entry(option, &team->option_list, list) { 12883d249d4cSJiri Pirko long arg; 12893d249d4cSJiri Pirko struct nlattr *opt_data_attr; 12903d249d4cSJiri Pirko 12913d249d4cSJiri Pirko if (option->type != opt_type || 12923d249d4cSJiri Pirko strcmp(option->name, opt_name)) 12933d249d4cSJiri Pirko continue; 12943d249d4cSJiri Pirko opt_found = true; 12953d249d4cSJiri Pirko opt_data_attr = mode_attrs[TEAM_ATTR_OPTION_DATA]; 12963d249d4cSJiri Pirko switch (opt_type) { 12973d249d4cSJiri Pirko case TEAM_OPTION_TYPE_U32: 12983d249d4cSJiri Pirko arg = nla_get_u32(opt_data_attr); 12993d249d4cSJiri Pirko break; 13003d249d4cSJiri Pirko case TEAM_OPTION_TYPE_STRING: 13013d249d4cSJiri Pirko arg = (long) nla_data(opt_data_attr); 13023d249d4cSJiri Pirko break; 13033d249d4cSJiri Pirko default: 13043d249d4cSJiri Pirko BUG(); 13053d249d4cSJiri Pirko } 13063d249d4cSJiri Pirko err = team_option_set(team, option, &arg); 13073d249d4cSJiri Pirko if (err) 13083d249d4cSJiri Pirko goto team_put; 13093d249d4cSJiri Pirko } 13103d249d4cSJiri Pirko if (!opt_found) { 13113d249d4cSJiri Pirko err = -ENOENT; 13123d249d4cSJiri Pirko goto team_put; 13133d249d4cSJiri Pirko } 13143d249d4cSJiri Pirko } 13153d249d4cSJiri Pirko 13163d249d4cSJiri Pirko team_put: 13173d249d4cSJiri Pirko team_nl_team_put(team); 13183d249d4cSJiri Pirko 13193d249d4cSJiri Pirko return err; 13203d249d4cSJiri Pirko } 13213d249d4cSJiri Pirko 13223d249d4cSJiri Pirko static int team_nl_fill_port_list_get_changed(struct sk_buff *skb, 13233d249d4cSJiri Pirko u32 pid, u32 seq, int flags, 13243d249d4cSJiri Pirko struct team *team, 13253d249d4cSJiri Pirko struct team_port *changed_port) 13263d249d4cSJiri Pirko { 13273d249d4cSJiri Pirko struct nlattr *port_list; 13283d249d4cSJiri Pirko void *hdr; 13293d249d4cSJiri Pirko struct team_port *port; 13303d249d4cSJiri Pirko 13313d249d4cSJiri Pirko hdr = genlmsg_put(skb, pid, seq, &team_nl_family, flags, 13323d249d4cSJiri Pirko TEAM_CMD_PORT_LIST_GET); 13333d249d4cSJiri Pirko if (IS_ERR(hdr)) 13343d249d4cSJiri Pirko return PTR_ERR(hdr); 13353d249d4cSJiri Pirko 13363d249d4cSJiri Pirko NLA_PUT_U32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex); 13373d249d4cSJiri Pirko port_list = nla_nest_start(skb, TEAM_ATTR_LIST_PORT); 13383d249d4cSJiri Pirko if (!port_list) 13393d249d4cSJiri Pirko return -EMSGSIZE; 13403d249d4cSJiri Pirko 13413d249d4cSJiri Pirko list_for_each_entry(port, &team->port_list, list) { 13423d249d4cSJiri Pirko struct nlattr *port_item; 13433d249d4cSJiri Pirko 13443d249d4cSJiri Pirko port_item = nla_nest_start(skb, TEAM_ATTR_ITEM_PORT); 13453d249d4cSJiri Pirko if (!port_item) 13463d249d4cSJiri Pirko goto nla_put_failure; 13473d249d4cSJiri Pirko NLA_PUT_U32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex); 13483d249d4cSJiri Pirko if (port == changed_port) 13493d249d4cSJiri Pirko NLA_PUT_FLAG(skb, TEAM_ATTR_PORT_CHANGED); 13503d249d4cSJiri Pirko if (port->linkup) 13513d249d4cSJiri Pirko NLA_PUT_FLAG(skb, TEAM_ATTR_PORT_LINKUP); 13523d249d4cSJiri Pirko NLA_PUT_U32(skb, TEAM_ATTR_PORT_SPEED, port->speed); 13533d249d4cSJiri Pirko NLA_PUT_U8(skb, TEAM_ATTR_PORT_DUPLEX, port->duplex); 13543d249d4cSJiri Pirko nla_nest_end(skb, port_item); 13553d249d4cSJiri Pirko } 13563d249d4cSJiri Pirko 13573d249d4cSJiri Pirko nla_nest_end(skb, port_list); 13583d249d4cSJiri Pirko return genlmsg_end(skb, hdr); 13593d249d4cSJiri Pirko 13603d249d4cSJiri Pirko nla_put_failure: 13613d249d4cSJiri Pirko genlmsg_cancel(skb, hdr); 13623d249d4cSJiri Pirko return -EMSGSIZE; 13633d249d4cSJiri Pirko } 13643d249d4cSJiri Pirko 13653d249d4cSJiri Pirko static int team_nl_fill_port_list_get(struct sk_buff *skb, 13663d249d4cSJiri Pirko struct genl_info *info, int flags, 13673d249d4cSJiri Pirko struct team *team) 13683d249d4cSJiri Pirko { 13693d249d4cSJiri Pirko return team_nl_fill_port_list_get_changed(skb, info->snd_pid, 13703d249d4cSJiri Pirko info->snd_seq, NLM_F_ACK, 13713d249d4cSJiri Pirko team, NULL); 13723d249d4cSJiri Pirko } 13733d249d4cSJiri Pirko 13743d249d4cSJiri Pirko static int team_nl_cmd_port_list_get(struct sk_buff *skb, 13753d249d4cSJiri Pirko struct genl_info *info) 13763d249d4cSJiri Pirko { 13773d249d4cSJiri Pirko struct team *team; 13783d249d4cSJiri Pirko int err; 13793d249d4cSJiri Pirko 13803d249d4cSJiri Pirko team = team_nl_team_get(info); 13813d249d4cSJiri Pirko if (!team) 13823d249d4cSJiri Pirko return -EINVAL; 13833d249d4cSJiri Pirko 13843d249d4cSJiri Pirko err = team_nl_send_generic(info, team, team_nl_fill_port_list_get); 13853d249d4cSJiri Pirko 13863d249d4cSJiri Pirko team_nl_team_put(team); 13873d249d4cSJiri Pirko 13883d249d4cSJiri Pirko return err; 13893d249d4cSJiri Pirko } 13903d249d4cSJiri Pirko 13913d249d4cSJiri Pirko static struct genl_ops team_nl_ops[] = { 13923d249d4cSJiri Pirko { 13933d249d4cSJiri Pirko .cmd = TEAM_CMD_NOOP, 13943d249d4cSJiri Pirko .doit = team_nl_cmd_noop, 13953d249d4cSJiri Pirko .policy = team_nl_policy, 13963d249d4cSJiri Pirko }, 13973d249d4cSJiri Pirko { 13983d249d4cSJiri Pirko .cmd = TEAM_CMD_OPTIONS_SET, 13993d249d4cSJiri Pirko .doit = team_nl_cmd_options_set, 14003d249d4cSJiri Pirko .policy = team_nl_policy, 14013d249d4cSJiri Pirko .flags = GENL_ADMIN_PERM, 14023d249d4cSJiri Pirko }, 14033d249d4cSJiri Pirko { 14043d249d4cSJiri Pirko .cmd = TEAM_CMD_OPTIONS_GET, 14053d249d4cSJiri Pirko .doit = team_nl_cmd_options_get, 14063d249d4cSJiri Pirko .policy = team_nl_policy, 14073d249d4cSJiri Pirko .flags = GENL_ADMIN_PERM, 14083d249d4cSJiri Pirko }, 14093d249d4cSJiri Pirko { 14103d249d4cSJiri Pirko .cmd = TEAM_CMD_PORT_LIST_GET, 14113d249d4cSJiri Pirko .doit = team_nl_cmd_port_list_get, 14123d249d4cSJiri Pirko .policy = team_nl_policy, 14133d249d4cSJiri Pirko .flags = GENL_ADMIN_PERM, 14143d249d4cSJiri Pirko }, 14153d249d4cSJiri Pirko }; 14163d249d4cSJiri Pirko 14173d249d4cSJiri Pirko static struct genl_multicast_group team_change_event_mcgrp = { 14183d249d4cSJiri Pirko .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, 14193d249d4cSJiri Pirko }; 14203d249d4cSJiri Pirko 14213d249d4cSJiri Pirko static int team_nl_send_event_options_get(struct team *team, 14223d249d4cSJiri Pirko struct team_option *changed_option) 14233d249d4cSJiri Pirko { 14243d249d4cSJiri Pirko struct sk_buff *skb; 14253d249d4cSJiri Pirko int err; 14263d249d4cSJiri Pirko struct net *net = dev_net(team->dev); 14273d249d4cSJiri Pirko 14283d249d4cSJiri Pirko skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 14293d249d4cSJiri Pirko if (!skb) 14303d249d4cSJiri Pirko return -ENOMEM; 14313d249d4cSJiri Pirko 14323d249d4cSJiri Pirko err = team_nl_fill_options_get_changed(skb, 0, 0, 0, team, 14333d249d4cSJiri Pirko changed_option); 14343d249d4cSJiri Pirko if (err < 0) 14353d249d4cSJiri Pirko goto err_fill; 14363d249d4cSJiri Pirko 14373d249d4cSJiri Pirko err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id, 14383d249d4cSJiri Pirko GFP_KERNEL); 14393d249d4cSJiri Pirko return err; 14403d249d4cSJiri Pirko 14413d249d4cSJiri Pirko err_fill: 14423d249d4cSJiri Pirko nlmsg_free(skb); 14433d249d4cSJiri Pirko return err; 14443d249d4cSJiri Pirko } 14453d249d4cSJiri Pirko 14463d249d4cSJiri Pirko static int team_nl_send_event_port_list_get(struct team_port *port) 14473d249d4cSJiri Pirko { 14483d249d4cSJiri Pirko struct sk_buff *skb; 14493d249d4cSJiri Pirko int err; 14503d249d4cSJiri Pirko struct net *net = dev_net(port->team->dev); 14513d249d4cSJiri Pirko 14523d249d4cSJiri Pirko skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); 14533d249d4cSJiri Pirko if (!skb) 14543d249d4cSJiri Pirko return -ENOMEM; 14553d249d4cSJiri Pirko 14563d249d4cSJiri Pirko err = team_nl_fill_port_list_get_changed(skb, 0, 0, 0, 14573d249d4cSJiri Pirko port->team, port); 14583d249d4cSJiri Pirko if (err < 0) 14593d249d4cSJiri Pirko goto err_fill; 14603d249d4cSJiri Pirko 14613d249d4cSJiri Pirko err = genlmsg_multicast_netns(net, skb, 0, team_change_event_mcgrp.id, 14623d249d4cSJiri Pirko GFP_KERNEL); 14633d249d4cSJiri Pirko return err; 14643d249d4cSJiri Pirko 14653d249d4cSJiri Pirko err_fill: 14663d249d4cSJiri Pirko nlmsg_free(skb); 14673d249d4cSJiri Pirko return err; 14683d249d4cSJiri Pirko } 14693d249d4cSJiri Pirko 14703d249d4cSJiri Pirko static int team_nl_init(void) 14713d249d4cSJiri Pirko { 14723d249d4cSJiri Pirko int err; 14733d249d4cSJiri Pirko 14743d249d4cSJiri Pirko err = genl_register_family_with_ops(&team_nl_family, team_nl_ops, 14753d249d4cSJiri Pirko ARRAY_SIZE(team_nl_ops)); 14763d249d4cSJiri Pirko if (err) 14773d249d4cSJiri Pirko return err; 14783d249d4cSJiri Pirko 14793d249d4cSJiri Pirko err = genl_register_mc_group(&team_nl_family, &team_change_event_mcgrp); 14803d249d4cSJiri Pirko if (err) 14813d249d4cSJiri Pirko goto err_change_event_grp_reg; 14823d249d4cSJiri Pirko 14833d249d4cSJiri Pirko return 0; 14843d249d4cSJiri Pirko 14853d249d4cSJiri Pirko err_change_event_grp_reg: 14863d249d4cSJiri Pirko genl_unregister_family(&team_nl_family); 14873d249d4cSJiri Pirko 14883d249d4cSJiri Pirko return err; 14893d249d4cSJiri Pirko } 14903d249d4cSJiri Pirko 14913d249d4cSJiri Pirko static void team_nl_fini(void) 14923d249d4cSJiri Pirko { 14933d249d4cSJiri Pirko genl_unregister_family(&team_nl_family); 14943d249d4cSJiri Pirko } 14953d249d4cSJiri Pirko 14963d249d4cSJiri Pirko 14973d249d4cSJiri Pirko /****************** 14983d249d4cSJiri Pirko * Change checkers 14993d249d4cSJiri Pirko ******************/ 15003d249d4cSJiri Pirko 15013d249d4cSJiri Pirko static void __team_options_change_check(struct team *team, 15023d249d4cSJiri Pirko struct team_option *changed_option) 15033d249d4cSJiri Pirko { 15043d249d4cSJiri Pirko int err; 15053d249d4cSJiri Pirko 15063d249d4cSJiri Pirko err = team_nl_send_event_options_get(team, changed_option); 15073d249d4cSJiri Pirko if (err) 15083d249d4cSJiri Pirko netdev_warn(team->dev, "Failed to send options change via netlink\n"); 15093d249d4cSJiri Pirko } 15103d249d4cSJiri Pirko 15113d249d4cSJiri Pirko /* rtnl lock is held */ 15123d249d4cSJiri Pirko static void __team_port_change_check(struct team_port *port, bool linkup) 15133d249d4cSJiri Pirko { 15143d249d4cSJiri Pirko int err; 15153d249d4cSJiri Pirko 15163d249d4cSJiri Pirko if (port->linkup == linkup) 15173d249d4cSJiri Pirko return; 15183d249d4cSJiri Pirko 15193d249d4cSJiri Pirko port->linkup = linkup; 15203d249d4cSJiri Pirko if (linkup) { 15213d249d4cSJiri Pirko struct ethtool_cmd ecmd; 15223d249d4cSJiri Pirko 15233d249d4cSJiri Pirko err = __ethtool_get_settings(port->dev, &ecmd); 15243d249d4cSJiri Pirko if (!err) { 15253d249d4cSJiri Pirko port->speed = ethtool_cmd_speed(&ecmd); 15263d249d4cSJiri Pirko port->duplex = ecmd.duplex; 15273d249d4cSJiri Pirko goto send_event; 15283d249d4cSJiri Pirko } 15293d249d4cSJiri Pirko } 15303d249d4cSJiri Pirko port->speed = 0; 15313d249d4cSJiri Pirko port->duplex = 0; 15323d249d4cSJiri Pirko 15333d249d4cSJiri Pirko send_event: 15343d249d4cSJiri Pirko err = team_nl_send_event_port_list_get(port); 15353d249d4cSJiri Pirko if (err) 15363d249d4cSJiri Pirko netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink\n", 15373d249d4cSJiri Pirko port->dev->name); 15383d249d4cSJiri Pirko 15393d249d4cSJiri Pirko } 15403d249d4cSJiri Pirko 15413d249d4cSJiri Pirko static void team_port_change_check(struct team_port *port, bool linkup) 15423d249d4cSJiri Pirko { 15433d249d4cSJiri Pirko struct team *team = port->team; 15443d249d4cSJiri Pirko 154561dc3461SJiri Pirko mutex_lock(&team->lock); 15463d249d4cSJiri Pirko __team_port_change_check(port, linkup); 154761dc3461SJiri Pirko mutex_unlock(&team->lock); 15483d249d4cSJiri Pirko } 15493d249d4cSJiri Pirko 15503d249d4cSJiri Pirko /************************************ 15513d249d4cSJiri Pirko * Net device notifier event handler 15523d249d4cSJiri Pirko ************************************/ 15533d249d4cSJiri Pirko 15543d249d4cSJiri Pirko static int team_device_event(struct notifier_block *unused, 15553d249d4cSJiri Pirko unsigned long event, void *ptr) 15563d249d4cSJiri Pirko { 15573d249d4cSJiri Pirko struct net_device *dev = (struct net_device *) ptr; 15583d249d4cSJiri Pirko struct team_port *port; 15593d249d4cSJiri Pirko 15603d249d4cSJiri Pirko port = team_port_get_rtnl(dev); 15613d249d4cSJiri Pirko if (!port) 15623d249d4cSJiri Pirko return NOTIFY_DONE; 15633d249d4cSJiri Pirko 15643d249d4cSJiri Pirko switch (event) { 15653d249d4cSJiri Pirko case NETDEV_UP: 15663d249d4cSJiri Pirko if (netif_carrier_ok(dev)) 15673d249d4cSJiri Pirko team_port_change_check(port, true); 15683d249d4cSJiri Pirko case NETDEV_DOWN: 15693d249d4cSJiri Pirko team_port_change_check(port, false); 15703d249d4cSJiri Pirko case NETDEV_CHANGE: 15713d249d4cSJiri Pirko if (netif_running(port->dev)) 15723d249d4cSJiri Pirko team_port_change_check(port, 15733d249d4cSJiri Pirko !!netif_carrier_ok(port->dev)); 15743d249d4cSJiri Pirko break; 15753d249d4cSJiri Pirko case NETDEV_UNREGISTER: 15763d249d4cSJiri Pirko team_del_slave(port->team->dev, dev); 15773d249d4cSJiri Pirko break; 15783d249d4cSJiri Pirko case NETDEV_FEAT_CHANGE: 15793d249d4cSJiri Pirko team_compute_features(port->team); 15803d249d4cSJiri Pirko break; 15813d249d4cSJiri Pirko case NETDEV_CHANGEMTU: 15823d249d4cSJiri Pirko /* Forbid to change mtu of underlaying device */ 15833d249d4cSJiri Pirko return NOTIFY_BAD; 15843d249d4cSJiri Pirko case NETDEV_PRE_TYPE_CHANGE: 15853d249d4cSJiri Pirko /* Forbid to change type of underlaying device */ 15863d249d4cSJiri Pirko return NOTIFY_BAD; 15873d249d4cSJiri Pirko } 15883d249d4cSJiri Pirko return NOTIFY_DONE; 15893d249d4cSJiri Pirko } 15903d249d4cSJiri Pirko 15913d249d4cSJiri Pirko static struct notifier_block team_notifier_block __read_mostly = { 15923d249d4cSJiri Pirko .notifier_call = team_device_event, 15933d249d4cSJiri Pirko }; 15943d249d4cSJiri Pirko 15953d249d4cSJiri Pirko 15963d249d4cSJiri Pirko /*********************** 15973d249d4cSJiri Pirko * Module init and exit 15983d249d4cSJiri Pirko ***********************/ 15993d249d4cSJiri Pirko 16003d249d4cSJiri Pirko static int __init team_module_init(void) 16013d249d4cSJiri Pirko { 16023d249d4cSJiri Pirko int err; 16033d249d4cSJiri Pirko 16043d249d4cSJiri Pirko register_netdevice_notifier(&team_notifier_block); 16053d249d4cSJiri Pirko 16063d249d4cSJiri Pirko err = rtnl_link_register(&team_link_ops); 16073d249d4cSJiri Pirko if (err) 16083d249d4cSJiri Pirko goto err_rtnl_reg; 16093d249d4cSJiri Pirko 16103d249d4cSJiri Pirko err = team_nl_init(); 16113d249d4cSJiri Pirko if (err) 16123d249d4cSJiri Pirko goto err_nl_init; 16133d249d4cSJiri Pirko 16143d249d4cSJiri Pirko return 0; 16153d249d4cSJiri Pirko 16163d249d4cSJiri Pirko err_nl_init: 16173d249d4cSJiri Pirko rtnl_link_unregister(&team_link_ops); 16183d249d4cSJiri Pirko 16193d249d4cSJiri Pirko err_rtnl_reg: 16203d249d4cSJiri Pirko unregister_netdevice_notifier(&team_notifier_block); 16213d249d4cSJiri Pirko 16223d249d4cSJiri Pirko return err; 16233d249d4cSJiri Pirko } 16243d249d4cSJiri Pirko 16253d249d4cSJiri Pirko static void __exit team_module_exit(void) 16263d249d4cSJiri Pirko { 16273d249d4cSJiri Pirko team_nl_fini(); 16283d249d4cSJiri Pirko rtnl_link_unregister(&team_link_ops); 16293d249d4cSJiri Pirko unregister_netdevice_notifier(&team_notifier_block); 16303d249d4cSJiri Pirko } 16313d249d4cSJiri Pirko 16323d249d4cSJiri Pirko module_init(team_module_init); 16333d249d4cSJiri Pirko module_exit(team_module_exit); 16343d249d4cSJiri Pirko 16353d249d4cSJiri Pirko MODULE_LICENSE("GPL v2"); 16363d249d4cSJiri Pirko MODULE_AUTHOR("Jiri Pirko <jpirko@redhat.com>"); 16373d249d4cSJiri Pirko MODULE_DESCRIPTION("Ethernet team device driver"); 16383d249d4cSJiri Pirko MODULE_ALIAS_RTNL_LINK(DRV_NAME); 1639