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3072 lines
73 KiB
3072 lines
73 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
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* drivers/net/team/team.c - Network team device driver |
|
* Copyright (c) 2011 Jiri Pirko <[email protected]> |
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*/ |
|
|
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#include <linux/ethtool.h> |
|
#include <linux/kernel.h> |
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#include <linux/types.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/rcupdate.h> |
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#include <linux/errno.h> |
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#include <linux/ctype.h> |
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#include <linux/notifier.h> |
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#include <linux/netdevice.h> |
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#include <linux/netpoll.h> |
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#include <linux/if_vlan.h> |
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#include <linux/if_arp.h> |
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#include <linux/socket.h> |
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#include <linux/etherdevice.h> |
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#include <linux/rtnetlink.h> |
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#include <net/rtnetlink.h> |
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#include <net/genetlink.h> |
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#include <net/netlink.h> |
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#include <net/sch_generic.h> |
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#include <generated/utsrelease.h> |
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#include <linux/if_team.h> |
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|
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#define DRV_NAME "team" |
|
|
|
|
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/********** |
|
* Helpers |
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**********/ |
|
|
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static struct team_port *team_port_get_rtnl(const struct net_device *dev) |
|
{ |
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struct team_port *port = rtnl_dereference(dev->rx_handler_data); |
|
|
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return netif_is_team_port(dev) ? port : NULL; |
|
} |
|
|
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/* |
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* Since the ability to change device address for open port device is tested in |
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* team_port_add, this function can be called without control of return value |
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*/ |
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static int __set_port_dev_addr(struct net_device *port_dev, |
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const unsigned char *dev_addr) |
|
{ |
|
struct sockaddr_storage addr; |
|
|
|
memcpy(addr.__data, dev_addr, port_dev->addr_len); |
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addr.ss_family = port_dev->type; |
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return dev_set_mac_address(port_dev, (struct sockaddr *)&addr, NULL); |
|
} |
|
|
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static int team_port_set_orig_dev_addr(struct team_port *port) |
|
{ |
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return __set_port_dev_addr(port->dev, port->orig.dev_addr); |
|
} |
|
|
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static int team_port_set_team_dev_addr(struct team *team, |
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struct team_port *port) |
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{ |
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return __set_port_dev_addr(port->dev, team->dev->dev_addr); |
|
} |
|
|
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int team_modeop_port_enter(struct team *team, struct team_port *port) |
|
{ |
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return team_port_set_team_dev_addr(team, port); |
|
} |
|
EXPORT_SYMBOL(team_modeop_port_enter); |
|
|
|
void team_modeop_port_change_dev_addr(struct team *team, |
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struct team_port *port) |
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{ |
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team_port_set_team_dev_addr(team, port); |
|
} |
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EXPORT_SYMBOL(team_modeop_port_change_dev_addr); |
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|
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static void team_lower_state_changed(struct team_port *port) |
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{ |
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struct netdev_lag_lower_state_info info; |
|
|
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info.link_up = port->linkup; |
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info.tx_enabled = team_port_enabled(port); |
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netdev_lower_state_changed(port->dev, &info); |
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} |
|
|
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static void team_refresh_port_linkup(struct team_port *port) |
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{ |
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bool new_linkup = port->user.linkup_enabled ? port->user.linkup : |
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port->state.linkup; |
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|
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if (port->linkup != new_linkup) { |
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port->linkup = new_linkup; |
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team_lower_state_changed(port); |
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} |
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} |
|
|
|
|
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/******************* |
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* Options handling |
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*******************/ |
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|
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struct team_option_inst { /* One for each option instance */ |
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struct list_head list; |
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struct list_head tmp_list; |
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struct team_option *option; |
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struct team_option_inst_info info; |
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bool changed; |
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bool removed; |
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}; |
|
|
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static struct team_option *__team_find_option(struct team *team, |
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const char *opt_name) |
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{ |
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struct team_option *option; |
|
|
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list_for_each_entry(option, &team->option_list, list) { |
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if (strcmp(option->name, opt_name) == 0) |
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return option; |
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} |
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return NULL; |
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} |
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|
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static void __team_option_inst_del(struct team_option_inst *opt_inst) |
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{ |
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list_del(&opt_inst->list); |
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kfree(opt_inst); |
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} |
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|
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static void __team_option_inst_del_option(struct team *team, |
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struct team_option *option) |
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{ |
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struct team_option_inst *opt_inst, *tmp; |
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|
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list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { |
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if (opt_inst->option == option) |
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__team_option_inst_del(opt_inst); |
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} |
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} |
|
|
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static int __team_option_inst_add(struct team *team, struct team_option *option, |
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struct team_port *port) |
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{ |
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struct team_option_inst *opt_inst; |
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unsigned int array_size; |
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unsigned int i; |
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int err; |
|
|
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array_size = option->array_size; |
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if (!array_size) |
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array_size = 1; /* No array but still need one instance */ |
|
|
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for (i = 0; i < array_size; i++) { |
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opt_inst = kmalloc(sizeof(*opt_inst), GFP_KERNEL); |
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if (!opt_inst) |
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return -ENOMEM; |
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opt_inst->option = option; |
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opt_inst->info.port = port; |
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opt_inst->info.array_index = i; |
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opt_inst->changed = true; |
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opt_inst->removed = false; |
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list_add_tail(&opt_inst->list, &team->option_inst_list); |
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if (option->init) { |
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err = option->init(team, &opt_inst->info); |
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if (err) |
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return err; |
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} |
|
|
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} |
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return 0; |
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} |
|
|
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static int __team_option_inst_add_option(struct team *team, |
|
struct team_option *option) |
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{ |
|
int err; |
|
|
|
if (!option->per_port) { |
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err = __team_option_inst_add(team, option, NULL); |
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if (err) |
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goto inst_del_option; |
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} |
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return 0; |
|
|
|
inst_del_option: |
|
__team_option_inst_del_option(team, option); |
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return err; |
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} |
|
|
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static void __team_option_inst_mark_removed_option(struct team *team, |
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struct team_option *option) |
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{ |
|
struct team_option_inst *opt_inst; |
|
|
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list_for_each_entry(opt_inst, &team->option_inst_list, list) { |
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if (opt_inst->option == option) { |
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opt_inst->changed = true; |
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opt_inst->removed = true; |
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} |
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} |
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} |
|
|
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static void __team_option_inst_del_port(struct team *team, |
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struct team_port *port) |
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{ |
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struct team_option_inst *opt_inst, *tmp; |
|
|
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list_for_each_entry_safe(opt_inst, tmp, &team->option_inst_list, list) { |
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if (opt_inst->option->per_port && |
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opt_inst->info.port == port) |
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__team_option_inst_del(opt_inst); |
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} |
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} |
|
|
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static int __team_option_inst_add_port(struct team *team, |
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struct team_port *port) |
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{ |
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struct team_option *option; |
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int err; |
|
|
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list_for_each_entry(option, &team->option_list, list) { |
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if (!option->per_port) |
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continue; |
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err = __team_option_inst_add(team, option, port); |
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if (err) |
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goto inst_del_port; |
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} |
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return 0; |
|
|
|
inst_del_port: |
|
__team_option_inst_del_port(team, port); |
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return err; |
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} |
|
|
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static void __team_option_inst_mark_removed_port(struct team *team, |
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struct team_port *port) |
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{ |
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struct team_option_inst *opt_inst; |
|
|
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list_for_each_entry(opt_inst, &team->option_inst_list, list) { |
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if (opt_inst->info.port == port) { |
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opt_inst->changed = true; |
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opt_inst->removed = true; |
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} |
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} |
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} |
|
|
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static int __team_options_register(struct team *team, |
|
const struct team_option *option, |
|
size_t option_count) |
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{ |
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int i; |
|
struct team_option **dst_opts; |
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int err; |
|
|
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dst_opts = kcalloc(option_count, sizeof(struct team_option *), |
|
GFP_KERNEL); |
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if (!dst_opts) |
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return -ENOMEM; |
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for (i = 0; i < option_count; i++, option++) { |
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if (__team_find_option(team, option->name)) { |
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err = -EEXIST; |
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goto alloc_rollback; |
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} |
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dst_opts[i] = kmemdup(option, sizeof(*option), GFP_KERNEL); |
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if (!dst_opts[i]) { |
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err = -ENOMEM; |
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goto alloc_rollback; |
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} |
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} |
|
|
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for (i = 0; i < option_count; i++) { |
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err = __team_option_inst_add_option(team, dst_opts[i]); |
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if (err) |
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goto inst_rollback; |
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list_add_tail(&dst_opts[i]->list, &team->option_list); |
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} |
|
|
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kfree(dst_opts); |
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return 0; |
|
|
|
inst_rollback: |
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for (i--; i >= 0; i--) |
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__team_option_inst_del_option(team, dst_opts[i]); |
|
|
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i = option_count; |
|
alloc_rollback: |
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for (i--; i >= 0; i--) |
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kfree(dst_opts[i]); |
|
|
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kfree(dst_opts); |
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return err; |
|
} |
|
|
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static void __team_options_mark_removed(struct team *team, |
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const struct team_option *option, |
|
size_t option_count) |
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{ |
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int i; |
|
|
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for (i = 0; i < option_count; i++, option++) { |
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struct team_option *del_opt; |
|
|
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del_opt = __team_find_option(team, option->name); |
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if (del_opt) |
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__team_option_inst_mark_removed_option(team, del_opt); |
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} |
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} |
|
|
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static void __team_options_unregister(struct team *team, |
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const struct team_option *option, |
|
size_t option_count) |
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{ |
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int i; |
|
|
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for (i = 0; i < option_count; i++, option++) { |
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struct team_option *del_opt; |
|
|
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del_opt = __team_find_option(team, option->name); |
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if (del_opt) { |
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__team_option_inst_del_option(team, del_opt); |
|
list_del(&del_opt->list); |
|
kfree(del_opt); |
|
} |
|
} |
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} |
|
|
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static void __team_options_change_check(struct team *team); |
|
|
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int team_options_register(struct team *team, |
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const struct team_option *option, |
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size_t option_count) |
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{ |
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int err; |
|
|
|
err = __team_options_register(team, option, option_count); |
|
if (err) |
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return err; |
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__team_options_change_check(team); |
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return 0; |
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} |
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EXPORT_SYMBOL(team_options_register); |
|
|
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void team_options_unregister(struct team *team, |
|
const struct team_option *option, |
|
size_t option_count) |
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{ |
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__team_options_mark_removed(team, option, option_count); |
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__team_options_change_check(team); |
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__team_options_unregister(team, option, option_count); |
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} |
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EXPORT_SYMBOL(team_options_unregister); |
|
|
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static int team_option_get(struct team *team, |
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struct team_option_inst *opt_inst, |
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struct team_gsetter_ctx *ctx) |
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{ |
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if (!opt_inst->option->getter) |
|
return -EOPNOTSUPP; |
|
return opt_inst->option->getter(team, ctx); |
|
} |
|
|
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static int team_option_set(struct team *team, |
|
struct team_option_inst *opt_inst, |
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struct team_gsetter_ctx *ctx) |
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{ |
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if (!opt_inst->option->setter) |
|
return -EOPNOTSUPP; |
|
return opt_inst->option->setter(team, ctx); |
|
} |
|
|
|
void team_option_inst_set_change(struct team_option_inst_info *opt_inst_info) |
|
{ |
|
struct team_option_inst *opt_inst; |
|
|
|
opt_inst = container_of(opt_inst_info, struct team_option_inst, info); |
|
opt_inst->changed = true; |
|
} |
|
EXPORT_SYMBOL(team_option_inst_set_change); |
|
|
|
void team_options_change_check(struct team *team) |
|
{ |
|
__team_options_change_check(team); |
|
} |
|
EXPORT_SYMBOL(team_options_change_check); |
|
|
|
|
|
/**************** |
|
* Mode handling |
|
****************/ |
|
|
|
static LIST_HEAD(mode_list); |
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static DEFINE_SPINLOCK(mode_list_lock); |
|
|
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struct team_mode_item { |
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struct list_head list; |
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const struct team_mode *mode; |
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}; |
|
|
|
static struct team_mode_item *__find_mode(const char *kind) |
|
{ |
|
struct team_mode_item *mitem; |
|
|
|
list_for_each_entry(mitem, &mode_list, list) { |
|
if (strcmp(mitem->mode->kind, kind) == 0) |
|
return mitem; |
|
} |
|
return NULL; |
|
} |
|
|
|
static bool is_good_mode_name(const char *name) |
|
{ |
|
while (*name != '\0') { |
|
if (!isalpha(*name) && !isdigit(*name) && *name != '_') |
|
return false; |
|
name++; |
|
} |
|
return true; |
|
} |
|
|
|
int team_mode_register(const struct team_mode *mode) |
|
{ |
|
int err = 0; |
|
struct team_mode_item *mitem; |
|
|
|
if (!is_good_mode_name(mode->kind) || |
|
mode->priv_size > TEAM_MODE_PRIV_SIZE) |
|
return -EINVAL; |
|
|
|
mitem = kmalloc(sizeof(*mitem), GFP_KERNEL); |
|
if (!mitem) |
|
return -ENOMEM; |
|
|
|
spin_lock(&mode_list_lock); |
|
if (__find_mode(mode->kind)) { |
|
err = -EEXIST; |
|
kfree(mitem); |
|
goto unlock; |
|
} |
|
mitem->mode = mode; |
|
list_add_tail(&mitem->list, &mode_list); |
|
unlock: |
|
spin_unlock(&mode_list_lock); |
|
return err; |
|
} |
|
EXPORT_SYMBOL(team_mode_register); |
|
|
|
void team_mode_unregister(const struct team_mode *mode) |
|
{ |
|
struct team_mode_item *mitem; |
|
|
|
spin_lock(&mode_list_lock); |
|
mitem = __find_mode(mode->kind); |
|
if (mitem) { |
|
list_del_init(&mitem->list); |
|
kfree(mitem); |
|
} |
|
spin_unlock(&mode_list_lock); |
|
} |
|
EXPORT_SYMBOL(team_mode_unregister); |
|
|
|
static const struct team_mode *team_mode_get(const char *kind) |
|
{ |
|
struct team_mode_item *mitem; |
|
const struct team_mode *mode = NULL; |
|
|
|
if (!try_module_get(THIS_MODULE)) |
|
return NULL; |
|
|
|
spin_lock(&mode_list_lock); |
|
mitem = __find_mode(kind); |
|
if (!mitem) { |
|
spin_unlock(&mode_list_lock); |
|
request_module("team-mode-%s", kind); |
|
spin_lock(&mode_list_lock); |
|
mitem = __find_mode(kind); |
|
} |
|
if (mitem) { |
|
mode = mitem->mode; |
|
if (!try_module_get(mode->owner)) |
|
mode = NULL; |
|
} |
|
|
|
spin_unlock(&mode_list_lock); |
|
module_put(THIS_MODULE); |
|
return mode; |
|
} |
|
|
|
static void team_mode_put(const struct team_mode *mode) |
|
{ |
|
module_put(mode->owner); |
|
} |
|
|
|
static bool team_dummy_transmit(struct team *team, struct sk_buff *skb) |
|
{ |
|
dev_kfree_skb_any(skb); |
|
return false; |
|
} |
|
|
|
static rx_handler_result_t team_dummy_receive(struct team *team, |
|
struct team_port *port, |
|
struct sk_buff *skb) |
|
{ |
|
return RX_HANDLER_ANOTHER; |
|
} |
|
|
|
static const struct team_mode __team_no_mode = { |
|
.kind = "*NOMODE*", |
|
}; |
|
|
|
static bool team_is_mode_set(struct team *team) |
|
{ |
|
return team->mode != &__team_no_mode; |
|
} |
|
|
|
static void team_set_no_mode(struct team *team) |
|
{ |
|
team->user_carrier_enabled = false; |
|
team->mode = &__team_no_mode; |
|
} |
|
|
|
static void team_adjust_ops(struct team *team) |
|
{ |
|
/* |
|
* To avoid checks in rx/tx skb paths, ensure here that non-null and |
|
* correct ops are always set. |
|
*/ |
|
|
|
if (!team->en_port_count || !team_is_mode_set(team) || |
|
!team->mode->ops->transmit) |
|
team->ops.transmit = team_dummy_transmit; |
|
else |
|
team->ops.transmit = team->mode->ops->transmit; |
|
|
|
if (!team->en_port_count || !team_is_mode_set(team) || |
|
!team->mode->ops->receive) |
|
team->ops.receive = team_dummy_receive; |
|
else |
|
team->ops.receive = team->mode->ops->receive; |
|
} |
|
|
|
/* |
|
* We can benefit from the fact that it's ensured no port is present |
|
* at the time of mode change. Therefore no packets are in fly so there's no |
|
* need to set mode operations in any special way. |
|
*/ |
|
static int __team_change_mode(struct team *team, |
|
const struct team_mode *new_mode) |
|
{ |
|
/* Check if mode was previously set and do cleanup if so */ |
|
if (team_is_mode_set(team)) { |
|
void (*exit_op)(struct team *team) = team->ops.exit; |
|
|
|
/* Clear ops area so no callback is called any longer */ |
|
memset(&team->ops, 0, sizeof(struct team_mode_ops)); |
|
team_adjust_ops(team); |
|
|
|
if (exit_op) |
|
exit_op(team); |
|
team_mode_put(team->mode); |
|
team_set_no_mode(team); |
|
/* zero private data area */ |
|
memset(&team->mode_priv, 0, |
|
sizeof(struct team) - offsetof(struct team, mode_priv)); |
|
} |
|
|
|
if (!new_mode) |
|
return 0; |
|
|
|
if (new_mode->ops->init) { |
|
int err; |
|
|
|
err = new_mode->ops->init(team); |
|
if (err) |
|
return err; |
|
} |
|
|
|
team->mode = new_mode; |
|
memcpy(&team->ops, new_mode->ops, sizeof(struct team_mode_ops)); |
|
team_adjust_ops(team); |
|
|
|
return 0; |
|
} |
|
|
|
static int team_change_mode(struct team *team, const char *kind) |
|
{ |
|
const struct team_mode *new_mode; |
|
struct net_device *dev = team->dev; |
|
int err; |
|
|
|
if (!list_empty(&team->port_list)) { |
|
netdev_err(dev, "No ports can be present during mode change\n"); |
|
return -EBUSY; |
|
} |
|
|
|
if (team_is_mode_set(team) && strcmp(team->mode->kind, kind) == 0) { |
|
netdev_err(dev, "Unable to change to the same mode the team is in\n"); |
|
return -EINVAL; |
|
} |
|
|
|
new_mode = team_mode_get(kind); |
|
if (!new_mode) { |
|
netdev_err(dev, "Mode \"%s\" not found\n", kind); |
|
return -EINVAL; |
|
} |
|
|
|
err = __team_change_mode(team, new_mode); |
|
if (err) { |
|
netdev_err(dev, "Failed to change to mode \"%s\"\n", kind); |
|
team_mode_put(new_mode); |
|
return err; |
|
} |
|
|
|
netdev_info(dev, "Mode changed to \"%s\"\n", kind); |
|
return 0; |
|
} |
|
|
|
|
|
/********************* |
|
* Peers notification |
|
*********************/ |
|
|
|
static void team_notify_peers_work(struct work_struct *work) |
|
{ |
|
struct team *team; |
|
int val; |
|
|
|
team = container_of(work, struct team, notify_peers.dw.work); |
|
|
|
if (!rtnl_trylock()) { |
|
schedule_delayed_work(&team->notify_peers.dw, 0); |
|
return; |
|
} |
|
val = atomic_dec_if_positive(&team->notify_peers.count_pending); |
|
if (val < 0) { |
|
rtnl_unlock(); |
|
return; |
|
} |
|
call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev); |
|
rtnl_unlock(); |
|
if (val) |
|
schedule_delayed_work(&team->notify_peers.dw, |
|
msecs_to_jiffies(team->notify_peers.interval)); |
|
} |
|
|
|
static void team_notify_peers(struct team *team) |
|
{ |
|
if (!team->notify_peers.count || !netif_running(team->dev)) |
|
return; |
|
atomic_add(team->notify_peers.count, &team->notify_peers.count_pending); |
|
schedule_delayed_work(&team->notify_peers.dw, 0); |
|
} |
|
|
|
static void team_notify_peers_init(struct team *team) |
|
{ |
|
INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work); |
|
} |
|
|
|
static void team_notify_peers_fini(struct team *team) |
|
{ |
|
cancel_delayed_work_sync(&team->notify_peers.dw); |
|
} |
|
|
|
|
|
/******************************* |
|
* Send multicast group rejoins |
|
*******************************/ |
|
|
|
static void team_mcast_rejoin_work(struct work_struct *work) |
|
{ |
|
struct team *team; |
|
int val; |
|
|
|
team = container_of(work, struct team, mcast_rejoin.dw.work); |
|
|
|
if (!rtnl_trylock()) { |
|
schedule_delayed_work(&team->mcast_rejoin.dw, 0); |
|
return; |
|
} |
|
val = atomic_dec_if_positive(&team->mcast_rejoin.count_pending); |
|
if (val < 0) { |
|
rtnl_unlock(); |
|
return; |
|
} |
|
call_netdevice_notifiers(NETDEV_RESEND_IGMP, team->dev); |
|
rtnl_unlock(); |
|
if (val) |
|
schedule_delayed_work(&team->mcast_rejoin.dw, |
|
msecs_to_jiffies(team->mcast_rejoin.interval)); |
|
} |
|
|
|
static void team_mcast_rejoin(struct team *team) |
|
{ |
|
if (!team->mcast_rejoin.count || !netif_running(team->dev)) |
|
return; |
|
atomic_add(team->mcast_rejoin.count, &team->mcast_rejoin.count_pending); |
|
schedule_delayed_work(&team->mcast_rejoin.dw, 0); |
|
} |
|
|
|
static void team_mcast_rejoin_init(struct team *team) |
|
{ |
|
INIT_DELAYED_WORK(&team->mcast_rejoin.dw, team_mcast_rejoin_work); |
|
} |
|
|
|
static void team_mcast_rejoin_fini(struct team *team) |
|
{ |
|
cancel_delayed_work_sync(&team->mcast_rejoin.dw); |
|
} |
|
|
|
|
|
/************************ |
|
* Rx path frame handler |
|
************************/ |
|
|
|
/* note: already called with rcu_read_lock */ |
|
static rx_handler_result_t team_handle_frame(struct sk_buff **pskb) |
|
{ |
|
struct sk_buff *skb = *pskb; |
|
struct team_port *port; |
|
struct team *team; |
|
rx_handler_result_t res; |
|
|
|
skb = skb_share_check(skb, GFP_ATOMIC); |
|
if (!skb) |
|
return RX_HANDLER_CONSUMED; |
|
|
|
*pskb = skb; |
|
|
|
port = team_port_get_rcu(skb->dev); |
|
team = port->team; |
|
if (!team_port_enabled(port)) { |
|
/* allow exact match delivery for disabled ports */ |
|
res = RX_HANDLER_EXACT; |
|
} else { |
|
res = team->ops.receive(team, port, skb); |
|
} |
|
if (res == RX_HANDLER_ANOTHER) { |
|
struct team_pcpu_stats *pcpu_stats; |
|
|
|
pcpu_stats = this_cpu_ptr(team->pcpu_stats); |
|
u64_stats_update_begin(&pcpu_stats->syncp); |
|
pcpu_stats->rx_packets++; |
|
pcpu_stats->rx_bytes += skb->len; |
|
if (skb->pkt_type == PACKET_MULTICAST) |
|
pcpu_stats->rx_multicast++; |
|
u64_stats_update_end(&pcpu_stats->syncp); |
|
|
|
skb->dev = team->dev; |
|
} else if (res == RX_HANDLER_EXACT) { |
|
this_cpu_inc(team->pcpu_stats->rx_nohandler); |
|
} else { |
|
this_cpu_inc(team->pcpu_stats->rx_dropped); |
|
} |
|
|
|
return res; |
|
} |
|
|
|
|
|
/************************************* |
|
* Multiqueue Tx port select override |
|
*************************************/ |
|
|
|
static int team_queue_override_init(struct team *team) |
|
{ |
|
struct list_head *listarr; |
|
unsigned int queue_cnt = team->dev->num_tx_queues - 1; |
|
unsigned int i; |
|
|
|
if (!queue_cnt) |
|
return 0; |
|
listarr = kmalloc_array(queue_cnt, sizeof(struct list_head), |
|
GFP_KERNEL); |
|
if (!listarr) |
|
return -ENOMEM; |
|
team->qom_lists = listarr; |
|
for (i = 0; i < queue_cnt; i++) |
|
INIT_LIST_HEAD(listarr++); |
|
return 0; |
|
} |
|
|
|
static void team_queue_override_fini(struct team *team) |
|
{ |
|
kfree(team->qom_lists); |
|
} |
|
|
|
static struct list_head *__team_get_qom_list(struct team *team, u16 queue_id) |
|
{ |
|
return &team->qom_lists[queue_id - 1]; |
|
} |
|
|
|
/* |
|
* note: already called with rcu_read_lock |
|
*/ |
|
static bool team_queue_override_transmit(struct team *team, struct sk_buff *skb) |
|
{ |
|
struct list_head *qom_list; |
|
struct team_port *port; |
|
|
|
if (!team->queue_override_enabled || !skb->queue_mapping) |
|
return false; |
|
qom_list = __team_get_qom_list(team, skb->queue_mapping); |
|
list_for_each_entry_rcu(port, qom_list, qom_list) { |
|
if (!team_dev_queue_xmit(team, port, skb)) |
|
return true; |
|
} |
|
return false; |
|
} |
|
|
|
static void __team_queue_override_port_del(struct team *team, |
|
struct team_port *port) |
|
{ |
|
if (!port->queue_id) |
|
return; |
|
list_del_rcu(&port->qom_list); |
|
} |
|
|
|
static bool team_queue_override_port_has_gt_prio_than(struct team_port *port, |
|
struct team_port *cur) |
|
{ |
|
if (port->priority < cur->priority) |
|
return true; |
|
if (port->priority > cur->priority) |
|
return false; |
|
if (port->index < cur->index) |
|
return true; |
|
return false; |
|
} |
|
|
|
static void __team_queue_override_port_add(struct team *team, |
|
struct team_port *port) |
|
{ |
|
struct team_port *cur; |
|
struct list_head *qom_list; |
|
struct list_head *node; |
|
|
|
if (!port->queue_id) |
|
return; |
|
qom_list = __team_get_qom_list(team, port->queue_id); |
|
node = qom_list; |
|
list_for_each_entry(cur, qom_list, qom_list) { |
|
if (team_queue_override_port_has_gt_prio_than(port, cur)) |
|
break; |
|
node = &cur->qom_list; |
|
} |
|
list_add_tail_rcu(&port->qom_list, node); |
|
} |
|
|
|
static void __team_queue_override_enabled_check(struct team *team) |
|
{ |
|
struct team_port *port; |
|
bool enabled = false; |
|
|
|
list_for_each_entry(port, &team->port_list, list) { |
|
if (port->queue_id) { |
|
enabled = true; |
|
break; |
|
} |
|
} |
|
if (enabled == team->queue_override_enabled) |
|
return; |
|
netdev_dbg(team->dev, "%s queue override\n", |
|
enabled ? "Enabling" : "Disabling"); |
|
team->queue_override_enabled = enabled; |
|
} |
|
|
|
static void team_queue_override_port_prio_changed(struct team *team, |
|
struct team_port *port) |
|
{ |
|
if (!port->queue_id || team_port_enabled(port)) |
|
return; |
|
__team_queue_override_port_del(team, port); |
|
__team_queue_override_port_add(team, port); |
|
__team_queue_override_enabled_check(team); |
|
} |
|
|
|
static void team_queue_override_port_change_queue_id(struct team *team, |
|
struct team_port *port, |
|
u16 new_queue_id) |
|
{ |
|
if (team_port_enabled(port)) { |
|
__team_queue_override_port_del(team, port); |
|
port->queue_id = new_queue_id; |
|
__team_queue_override_port_add(team, port); |
|
__team_queue_override_enabled_check(team); |
|
} else { |
|
port->queue_id = new_queue_id; |
|
} |
|
} |
|
|
|
static void team_queue_override_port_add(struct team *team, |
|
struct team_port *port) |
|
{ |
|
__team_queue_override_port_add(team, port); |
|
__team_queue_override_enabled_check(team); |
|
} |
|
|
|
static void team_queue_override_port_del(struct team *team, |
|
struct team_port *port) |
|
{ |
|
__team_queue_override_port_del(team, port); |
|
__team_queue_override_enabled_check(team); |
|
} |
|
|
|
|
|
/**************** |
|
* Port handling |
|
****************/ |
|
|
|
static bool team_port_find(const struct team *team, |
|
const struct team_port *port) |
|
{ |
|
struct team_port *cur; |
|
|
|
list_for_each_entry(cur, &team->port_list, list) |
|
if (cur == port) |
|
return true; |
|
return false; |
|
} |
|
|
|
/* |
|
* Enable/disable port by adding to enabled port hashlist and setting |
|
* port->index (Might be racy so reader could see incorrect ifindex when |
|
* processing a flying packet, but that is not a problem). Write guarded |
|
* by team->lock. |
|
*/ |
|
static void team_port_enable(struct team *team, |
|
struct team_port *port) |
|
{ |
|
if (team_port_enabled(port)) |
|
return; |
|
port->index = team->en_port_count++; |
|
hlist_add_head_rcu(&port->hlist, |
|
team_port_index_hash(team, port->index)); |
|
team_adjust_ops(team); |
|
team_queue_override_port_add(team, port); |
|
if (team->ops.port_enabled) |
|
team->ops.port_enabled(team, port); |
|
team_notify_peers(team); |
|
team_mcast_rejoin(team); |
|
team_lower_state_changed(port); |
|
} |
|
|
|
static void __reconstruct_port_hlist(struct team *team, int rm_index) |
|
{ |
|
int i; |
|
struct team_port *port; |
|
|
|
for (i = rm_index + 1; i < team->en_port_count; i++) { |
|
port = team_get_port_by_index(team, i); |
|
hlist_del_rcu(&port->hlist); |
|
port->index--; |
|
hlist_add_head_rcu(&port->hlist, |
|
team_port_index_hash(team, port->index)); |
|
} |
|
} |
|
|
|
static void team_port_disable(struct team *team, |
|
struct team_port *port) |
|
{ |
|
if (!team_port_enabled(port)) |
|
return; |
|
if (team->ops.port_disabled) |
|
team->ops.port_disabled(team, port); |
|
hlist_del_rcu(&port->hlist); |
|
__reconstruct_port_hlist(team, port->index); |
|
port->index = -1; |
|
team->en_port_count--; |
|
team_queue_override_port_del(team, port); |
|
team_adjust_ops(team); |
|
team_lower_state_changed(port); |
|
} |
|
|
|
#define TEAM_VLAN_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ |
|
NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE | \ |
|
NETIF_F_HIGHDMA | NETIF_F_LRO) |
|
|
|
#define TEAM_ENC_FEATURES (NETIF_F_HW_CSUM | NETIF_F_SG | \ |
|
NETIF_F_RXCSUM | NETIF_F_GSO_SOFTWARE) |
|
|
|
static void __team_compute_features(struct team *team) |
|
{ |
|
struct team_port *port; |
|
netdev_features_t vlan_features = TEAM_VLAN_FEATURES & |
|
NETIF_F_ALL_FOR_ALL; |
|
netdev_features_t enc_features = TEAM_ENC_FEATURES; |
|
unsigned short max_hard_header_len = ETH_HLEN; |
|
unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE | |
|
IFF_XMIT_DST_RELEASE_PERM; |
|
|
|
rcu_read_lock(); |
|
list_for_each_entry_rcu(port, &team->port_list, list) { |
|
vlan_features = netdev_increment_features(vlan_features, |
|
port->dev->vlan_features, |
|
TEAM_VLAN_FEATURES); |
|
enc_features = |
|
netdev_increment_features(enc_features, |
|
port->dev->hw_enc_features, |
|
TEAM_ENC_FEATURES); |
|
|
|
|
|
dst_release_flag &= port->dev->priv_flags; |
|
if (port->dev->hard_header_len > max_hard_header_len) |
|
max_hard_header_len = port->dev->hard_header_len; |
|
} |
|
rcu_read_unlock(); |
|
|
|
team->dev->vlan_features = vlan_features; |
|
team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL | |
|
NETIF_F_HW_VLAN_CTAG_TX | |
|
NETIF_F_HW_VLAN_STAG_TX; |
|
team->dev->hard_header_len = max_hard_header_len; |
|
|
|
team->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; |
|
if (dst_release_flag == (IFF_XMIT_DST_RELEASE | IFF_XMIT_DST_RELEASE_PERM)) |
|
team->dev->priv_flags |= IFF_XMIT_DST_RELEASE; |
|
} |
|
|
|
static void team_compute_features(struct team *team) |
|
{ |
|
__team_compute_features(team); |
|
netdev_change_features(team->dev); |
|
} |
|
|
|
static int team_port_enter(struct team *team, struct team_port *port) |
|
{ |
|
int err = 0; |
|
|
|
dev_hold(team->dev); |
|
if (team->ops.port_enter) { |
|
err = team->ops.port_enter(team, port); |
|
if (err) { |
|
netdev_err(team->dev, "Device %s failed to enter team mode\n", |
|
port->dev->name); |
|
goto err_port_enter; |
|
} |
|
} |
|
|
|
return 0; |
|
|
|
err_port_enter: |
|
dev_put(team->dev); |
|
|
|
return err; |
|
} |
|
|
|
static void team_port_leave(struct team *team, struct team_port *port) |
|
{ |
|
if (team->ops.port_leave) |
|
team->ops.port_leave(team, port); |
|
dev_put(team->dev); |
|
} |
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER |
|
static int __team_port_enable_netpoll(struct team_port *port) |
|
{ |
|
struct netpoll *np; |
|
int err; |
|
|
|
np = kzalloc(sizeof(*np), GFP_KERNEL); |
|
if (!np) |
|
return -ENOMEM; |
|
|
|
err = __netpoll_setup(np, port->dev); |
|
if (err) { |
|
kfree(np); |
|
return err; |
|
} |
|
port->np = np; |
|
return err; |
|
} |
|
|
|
static int team_port_enable_netpoll(struct team_port *port) |
|
{ |
|
if (!port->team->dev->npinfo) |
|
return 0; |
|
|
|
return __team_port_enable_netpoll(port); |
|
} |
|
|
|
static void team_port_disable_netpoll(struct team_port *port) |
|
{ |
|
struct netpoll *np = port->np; |
|
|
|
if (!np) |
|
return; |
|
port->np = NULL; |
|
|
|
__netpoll_free(np); |
|
} |
|
#else |
|
static int team_port_enable_netpoll(struct team_port *port) |
|
{ |
|
return 0; |
|
} |
|
static void team_port_disable_netpoll(struct team_port *port) |
|
{ |
|
} |
|
#endif |
|
|
|
static int team_upper_dev_link(struct team *team, struct team_port *port, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
struct netdev_lag_upper_info lag_upper_info; |
|
int err; |
|
|
|
lag_upper_info.tx_type = team->mode->lag_tx_type; |
|
lag_upper_info.hash_type = NETDEV_LAG_HASH_UNKNOWN; |
|
err = netdev_master_upper_dev_link(port->dev, team->dev, NULL, |
|
&lag_upper_info, extack); |
|
if (err) |
|
return err; |
|
port->dev->priv_flags |= IFF_TEAM_PORT; |
|
return 0; |
|
} |
|
|
|
static void team_upper_dev_unlink(struct team *team, struct team_port *port) |
|
{ |
|
netdev_upper_dev_unlink(port->dev, team->dev); |
|
port->dev->priv_flags &= ~IFF_TEAM_PORT; |
|
} |
|
|
|
static void __team_port_change_port_added(struct team_port *port, bool linkup); |
|
static int team_dev_type_check_change(struct net_device *dev, |
|
struct net_device *port_dev); |
|
|
|
static int team_port_add(struct team *team, struct net_device *port_dev, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
struct net_device *dev = team->dev; |
|
struct team_port *port; |
|
char *portname = port_dev->name; |
|
int err; |
|
|
|
if (port_dev->flags & IFF_LOOPBACK) { |
|
NL_SET_ERR_MSG(extack, "Loopback device can't be added as a team port"); |
|
netdev_err(dev, "Device %s is loopback device. Loopback devices can't be added as a team port\n", |
|
portname); |
|
return -EINVAL; |
|
} |
|
|
|
if (netif_is_team_port(port_dev)) { |
|
NL_SET_ERR_MSG(extack, "Device is already a port of a team device"); |
|
netdev_err(dev, "Device %s is already a port " |
|
"of a team device\n", portname); |
|
return -EBUSY; |
|
} |
|
|
|
if (dev == port_dev) { |
|
NL_SET_ERR_MSG(extack, "Cannot enslave team device to itself"); |
|
netdev_err(dev, "Cannot enslave team device to itself\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (netdev_has_upper_dev(dev, port_dev)) { |
|
NL_SET_ERR_MSG(extack, "Device is already an upper device of the team interface"); |
|
netdev_err(dev, "Device %s is already an upper device of the team interface\n", |
|
portname); |
|
return -EBUSY; |
|
} |
|
|
|
if (port_dev->features & NETIF_F_VLAN_CHALLENGED && |
|
vlan_uses_dev(dev)) { |
|
NL_SET_ERR_MSG(extack, "Device is VLAN challenged and team device has VLAN set up"); |
|
netdev_err(dev, "Device %s is VLAN challenged and team device has VLAN set up\n", |
|
portname); |
|
return -EPERM; |
|
} |
|
|
|
err = team_dev_type_check_change(dev, port_dev); |
|
if (err) |
|
return err; |
|
|
|
if (port_dev->flags & IFF_UP) { |
|
NL_SET_ERR_MSG(extack, "Device is up. Set it down before adding it as a team port"); |
|
netdev_err(dev, "Device %s is up. Set it down before adding it as a team port\n", |
|
portname); |
|
return -EBUSY; |
|
} |
|
|
|
port = kzalloc(sizeof(struct team_port) + team->mode->port_priv_size, |
|
GFP_KERNEL); |
|
if (!port) |
|
return -ENOMEM; |
|
|
|
port->dev = port_dev; |
|
port->team = team; |
|
INIT_LIST_HEAD(&port->qom_list); |
|
|
|
port->orig.mtu = port_dev->mtu; |
|
err = dev_set_mtu(port_dev, dev->mtu); |
|
if (err) { |
|
netdev_dbg(dev, "Error %d calling dev_set_mtu\n", err); |
|
goto err_set_mtu; |
|
} |
|
|
|
memcpy(port->orig.dev_addr, port_dev->dev_addr, port_dev->addr_len); |
|
|
|
err = team_port_enter(team, port); |
|
if (err) { |
|
netdev_err(dev, "Device %s failed to enter team mode\n", |
|
portname); |
|
goto err_port_enter; |
|
} |
|
|
|
err = dev_open(port_dev, extack); |
|
if (err) { |
|
netdev_dbg(dev, "Device %s opening failed\n", |
|
portname); |
|
goto err_dev_open; |
|
} |
|
|
|
err = vlan_vids_add_by_dev(port_dev, dev); |
|
if (err) { |
|
netdev_err(dev, "Failed to add vlan ids to device %s\n", |
|
portname); |
|
goto err_vids_add; |
|
} |
|
|
|
err = team_port_enable_netpoll(port); |
|
if (err) { |
|
netdev_err(dev, "Failed to enable netpoll on device %s\n", |
|
portname); |
|
goto err_enable_netpoll; |
|
} |
|
|
|
if (!(dev->features & NETIF_F_LRO)) |
|
dev_disable_lro(port_dev); |
|
|
|
err = netdev_rx_handler_register(port_dev, team_handle_frame, |
|
port); |
|
if (err) { |
|
netdev_err(dev, "Device %s failed to register rx_handler\n", |
|
portname); |
|
goto err_handler_register; |
|
} |
|
|
|
err = team_upper_dev_link(team, port, extack); |
|
if (err) { |
|
netdev_err(dev, "Device %s failed to set upper link\n", |
|
portname); |
|
goto err_set_upper_link; |
|
} |
|
|
|
err = __team_option_inst_add_port(team, port); |
|
if (err) { |
|
netdev_err(dev, "Device %s failed to add per-port options\n", |
|
portname); |
|
goto err_option_port_add; |
|
} |
|
|
|
/* set promiscuity level to new slave */ |
|
if (dev->flags & IFF_PROMISC) { |
|
err = dev_set_promiscuity(port_dev, 1); |
|
if (err) |
|
goto err_set_slave_promisc; |
|
} |
|
|
|
/* set allmulti level to new slave */ |
|
if (dev->flags & IFF_ALLMULTI) { |
|
err = dev_set_allmulti(port_dev, 1); |
|
if (err) { |
|
if (dev->flags & IFF_PROMISC) |
|
dev_set_promiscuity(port_dev, -1); |
|
goto err_set_slave_promisc; |
|
} |
|
} |
|
|
|
netif_addr_lock_bh(dev); |
|
dev_uc_sync_multiple(port_dev, dev); |
|
dev_mc_sync_multiple(port_dev, dev); |
|
netif_addr_unlock_bh(dev); |
|
|
|
port->index = -1; |
|
list_add_tail_rcu(&port->list, &team->port_list); |
|
team_port_enable(team, port); |
|
__team_compute_features(team); |
|
__team_port_change_port_added(port, !!netif_oper_up(port_dev)); |
|
__team_options_change_check(team); |
|
|
|
netdev_info(dev, "Port device %s added\n", portname); |
|
|
|
return 0; |
|
|
|
err_set_slave_promisc: |
|
__team_option_inst_del_port(team, port); |
|
|
|
err_option_port_add: |
|
team_upper_dev_unlink(team, port); |
|
|
|
err_set_upper_link: |
|
netdev_rx_handler_unregister(port_dev); |
|
|
|
err_handler_register: |
|
team_port_disable_netpoll(port); |
|
|
|
err_enable_netpoll: |
|
vlan_vids_del_by_dev(port_dev, dev); |
|
|
|
err_vids_add: |
|
dev_close(port_dev); |
|
|
|
err_dev_open: |
|
team_port_leave(team, port); |
|
team_port_set_orig_dev_addr(port); |
|
|
|
err_port_enter: |
|
dev_set_mtu(port_dev, port->orig.mtu); |
|
|
|
err_set_mtu: |
|
kfree(port); |
|
|
|
return err; |
|
} |
|
|
|
static void __team_port_change_port_removed(struct team_port *port); |
|
|
|
static int team_port_del(struct team *team, struct net_device *port_dev) |
|
{ |
|
struct net_device *dev = team->dev; |
|
struct team_port *port; |
|
char *portname = port_dev->name; |
|
|
|
port = team_port_get_rtnl(port_dev); |
|
if (!port || !team_port_find(team, port)) { |
|
netdev_err(dev, "Device %s does not act as a port of this team\n", |
|
portname); |
|
return -ENOENT; |
|
} |
|
|
|
team_port_disable(team, port); |
|
list_del_rcu(&port->list); |
|
|
|
if (dev->flags & IFF_PROMISC) |
|
dev_set_promiscuity(port_dev, -1); |
|
if (dev->flags & IFF_ALLMULTI) |
|
dev_set_allmulti(port_dev, -1); |
|
|
|
team_upper_dev_unlink(team, port); |
|
netdev_rx_handler_unregister(port_dev); |
|
team_port_disable_netpoll(port); |
|
vlan_vids_del_by_dev(port_dev, dev); |
|
dev_uc_unsync(port_dev, dev); |
|
dev_mc_unsync(port_dev, dev); |
|
dev_close(port_dev); |
|
team_port_leave(team, port); |
|
|
|
__team_option_inst_mark_removed_port(team, port); |
|
__team_options_change_check(team); |
|
__team_option_inst_del_port(team, port); |
|
__team_port_change_port_removed(port); |
|
|
|
team_port_set_orig_dev_addr(port); |
|
dev_set_mtu(port_dev, port->orig.mtu); |
|
kfree_rcu(port, rcu); |
|
netdev_info(dev, "Port device %s removed\n", portname); |
|
__team_compute_features(team); |
|
|
|
return 0; |
|
} |
|
|
|
|
|
/***************** |
|
* Net device ops |
|
*****************/ |
|
|
|
static int team_mode_option_get(struct team *team, struct team_gsetter_ctx *ctx) |
|
{ |
|
ctx->data.str_val = team->mode->kind; |
|
return 0; |
|
} |
|
|
|
static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx) |
|
{ |
|
return team_change_mode(team, ctx->data.str_val); |
|
} |
|
|
|
static int team_notify_peers_count_get(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
ctx->data.u32_val = team->notify_peers.count; |
|
return 0; |
|
} |
|
|
|
static int team_notify_peers_count_set(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
team->notify_peers.count = ctx->data.u32_val; |
|
return 0; |
|
} |
|
|
|
static int team_notify_peers_interval_get(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
ctx->data.u32_val = team->notify_peers.interval; |
|
return 0; |
|
} |
|
|
|
static int team_notify_peers_interval_set(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
team->notify_peers.interval = ctx->data.u32_val; |
|
return 0; |
|
} |
|
|
|
static int team_mcast_rejoin_count_get(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
ctx->data.u32_val = team->mcast_rejoin.count; |
|
return 0; |
|
} |
|
|
|
static int team_mcast_rejoin_count_set(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
team->mcast_rejoin.count = ctx->data.u32_val; |
|
return 0; |
|
} |
|
|
|
static int team_mcast_rejoin_interval_get(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
ctx->data.u32_val = team->mcast_rejoin.interval; |
|
return 0; |
|
} |
|
|
|
static int team_mcast_rejoin_interval_set(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
team->mcast_rejoin.interval = ctx->data.u32_val; |
|
return 0; |
|
} |
|
|
|
static int team_port_en_option_get(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
struct team_port *port = ctx->info->port; |
|
|
|
ctx->data.bool_val = team_port_enabled(port); |
|
return 0; |
|
} |
|
|
|
static int team_port_en_option_set(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
struct team_port *port = ctx->info->port; |
|
|
|
if (ctx->data.bool_val) |
|
team_port_enable(team, port); |
|
else |
|
team_port_disable(team, port); |
|
return 0; |
|
} |
|
|
|
static int team_user_linkup_option_get(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
struct team_port *port = ctx->info->port; |
|
|
|
ctx->data.bool_val = port->user.linkup; |
|
return 0; |
|
} |
|
|
|
static void __team_carrier_check(struct team *team); |
|
|
|
static int team_user_linkup_option_set(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
struct team_port *port = ctx->info->port; |
|
|
|
port->user.linkup = ctx->data.bool_val; |
|
team_refresh_port_linkup(port); |
|
__team_carrier_check(port->team); |
|
return 0; |
|
} |
|
|
|
static int team_user_linkup_en_option_get(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
struct team_port *port = ctx->info->port; |
|
|
|
ctx->data.bool_val = port->user.linkup_enabled; |
|
return 0; |
|
} |
|
|
|
static int team_user_linkup_en_option_set(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
struct team_port *port = ctx->info->port; |
|
|
|
port->user.linkup_enabled = ctx->data.bool_val; |
|
team_refresh_port_linkup(port); |
|
__team_carrier_check(port->team); |
|
return 0; |
|
} |
|
|
|
static int team_priority_option_get(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
struct team_port *port = ctx->info->port; |
|
|
|
ctx->data.s32_val = port->priority; |
|
return 0; |
|
} |
|
|
|
static int team_priority_option_set(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
struct team_port *port = ctx->info->port; |
|
s32 priority = ctx->data.s32_val; |
|
|
|
if (port->priority == priority) |
|
return 0; |
|
port->priority = priority; |
|
team_queue_override_port_prio_changed(team, port); |
|
return 0; |
|
} |
|
|
|
static int team_queue_id_option_get(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
struct team_port *port = ctx->info->port; |
|
|
|
ctx->data.u32_val = port->queue_id; |
|
return 0; |
|
} |
|
|
|
static int team_queue_id_option_set(struct team *team, |
|
struct team_gsetter_ctx *ctx) |
|
{ |
|
struct team_port *port = ctx->info->port; |
|
u16 new_queue_id = ctx->data.u32_val; |
|
|
|
if (port->queue_id == new_queue_id) |
|
return 0; |
|
if (new_queue_id >= team->dev->real_num_tx_queues) |
|
return -EINVAL; |
|
team_queue_override_port_change_queue_id(team, port, new_queue_id); |
|
return 0; |
|
} |
|
|
|
static const struct team_option team_options[] = { |
|
{ |
|
.name = "mode", |
|
.type = TEAM_OPTION_TYPE_STRING, |
|
.getter = team_mode_option_get, |
|
.setter = team_mode_option_set, |
|
}, |
|
{ |
|
.name = "notify_peers_count", |
|
.type = TEAM_OPTION_TYPE_U32, |
|
.getter = team_notify_peers_count_get, |
|
.setter = team_notify_peers_count_set, |
|
}, |
|
{ |
|
.name = "notify_peers_interval", |
|
.type = TEAM_OPTION_TYPE_U32, |
|
.getter = team_notify_peers_interval_get, |
|
.setter = team_notify_peers_interval_set, |
|
}, |
|
{ |
|
.name = "mcast_rejoin_count", |
|
.type = TEAM_OPTION_TYPE_U32, |
|
.getter = team_mcast_rejoin_count_get, |
|
.setter = team_mcast_rejoin_count_set, |
|
}, |
|
{ |
|
.name = "mcast_rejoin_interval", |
|
.type = TEAM_OPTION_TYPE_U32, |
|
.getter = team_mcast_rejoin_interval_get, |
|
.setter = team_mcast_rejoin_interval_set, |
|
}, |
|
{ |
|
.name = "enabled", |
|
.type = TEAM_OPTION_TYPE_BOOL, |
|
.per_port = true, |
|
.getter = team_port_en_option_get, |
|
.setter = team_port_en_option_set, |
|
}, |
|
{ |
|
.name = "user_linkup", |
|
.type = TEAM_OPTION_TYPE_BOOL, |
|
.per_port = true, |
|
.getter = team_user_linkup_option_get, |
|
.setter = team_user_linkup_option_set, |
|
}, |
|
{ |
|
.name = "user_linkup_enabled", |
|
.type = TEAM_OPTION_TYPE_BOOL, |
|
.per_port = true, |
|
.getter = team_user_linkup_en_option_get, |
|
.setter = team_user_linkup_en_option_set, |
|
}, |
|
{ |
|
.name = "priority", |
|
.type = TEAM_OPTION_TYPE_S32, |
|
.per_port = true, |
|
.getter = team_priority_option_get, |
|
.setter = team_priority_option_set, |
|
}, |
|
{ |
|
.name = "queue_id", |
|
.type = TEAM_OPTION_TYPE_U32, |
|
.per_port = true, |
|
.getter = team_queue_id_option_get, |
|
.setter = team_queue_id_option_set, |
|
}, |
|
}; |
|
|
|
|
|
static int team_init(struct net_device *dev) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
int i; |
|
int err; |
|
|
|
team->dev = dev; |
|
team_set_no_mode(team); |
|
|
|
team->pcpu_stats = netdev_alloc_pcpu_stats(struct team_pcpu_stats); |
|
if (!team->pcpu_stats) |
|
return -ENOMEM; |
|
|
|
for (i = 0; i < TEAM_PORT_HASHENTRIES; i++) |
|
INIT_HLIST_HEAD(&team->en_port_hlist[i]); |
|
INIT_LIST_HEAD(&team->port_list); |
|
err = team_queue_override_init(team); |
|
if (err) |
|
goto err_team_queue_override_init; |
|
|
|
team_adjust_ops(team); |
|
|
|
INIT_LIST_HEAD(&team->option_list); |
|
INIT_LIST_HEAD(&team->option_inst_list); |
|
|
|
team_notify_peers_init(team); |
|
team_mcast_rejoin_init(team); |
|
|
|
err = team_options_register(team, team_options, ARRAY_SIZE(team_options)); |
|
if (err) |
|
goto err_options_register; |
|
netif_carrier_off(dev); |
|
|
|
lockdep_register_key(&team->team_lock_key); |
|
__mutex_init(&team->lock, "team->team_lock_key", &team->team_lock_key); |
|
netdev_lockdep_set_classes(dev); |
|
|
|
return 0; |
|
|
|
err_options_register: |
|
team_mcast_rejoin_fini(team); |
|
team_notify_peers_fini(team); |
|
team_queue_override_fini(team); |
|
err_team_queue_override_init: |
|
free_percpu(team->pcpu_stats); |
|
|
|
return err; |
|
} |
|
|
|
static void team_uninit(struct net_device *dev) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
struct team_port *port; |
|
struct team_port *tmp; |
|
|
|
mutex_lock(&team->lock); |
|
list_for_each_entry_safe(port, tmp, &team->port_list, list) |
|
team_port_del(team, port->dev); |
|
|
|
__team_change_mode(team, NULL); /* cleanup */ |
|
__team_options_unregister(team, team_options, ARRAY_SIZE(team_options)); |
|
team_mcast_rejoin_fini(team); |
|
team_notify_peers_fini(team); |
|
team_queue_override_fini(team); |
|
mutex_unlock(&team->lock); |
|
netdev_change_features(dev); |
|
lockdep_unregister_key(&team->team_lock_key); |
|
} |
|
|
|
static void team_destructor(struct net_device *dev) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
|
|
free_percpu(team->pcpu_stats); |
|
} |
|
|
|
static int team_open(struct net_device *dev) |
|
{ |
|
return 0; |
|
} |
|
|
|
static int team_close(struct net_device *dev) |
|
{ |
|
return 0; |
|
} |
|
|
|
/* |
|
* note: already called with rcu_read_lock |
|
*/ |
|
static netdev_tx_t team_xmit(struct sk_buff *skb, struct net_device *dev) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
bool tx_success; |
|
unsigned int len = skb->len; |
|
|
|
tx_success = team_queue_override_transmit(team, skb); |
|
if (!tx_success) |
|
tx_success = team->ops.transmit(team, skb); |
|
if (tx_success) { |
|
struct team_pcpu_stats *pcpu_stats; |
|
|
|
pcpu_stats = this_cpu_ptr(team->pcpu_stats); |
|
u64_stats_update_begin(&pcpu_stats->syncp); |
|
pcpu_stats->tx_packets++; |
|
pcpu_stats->tx_bytes += len; |
|
u64_stats_update_end(&pcpu_stats->syncp); |
|
} else { |
|
this_cpu_inc(team->pcpu_stats->tx_dropped); |
|
} |
|
|
|
return NETDEV_TX_OK; |
|
} |
|
|
|
static u16 team_select_queue(struct net_device *dev, struct sk_buff *skb, |
|
struct net_device *sb_dev) |
|
{ |
|
/* |
|
* This helper function exists to help dev_pick_tx get the correct |
|
* destination queue. Using a helper function skips a call to |
|
* skb_tx_hash and will put the skbs in the queue we expect on their |
|
* way down to the team driver. |
|
*/ |
|
u16 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0; |
|
|
|
/* |
|
* Save the original txq to restore before passing to the driver |
|
*/ |
|
qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping; |
|
|
|
if (unlikely(txq >= dev->real_num_tx_queues)) { |
|
do { |
|
txq -= dev->real_num_tx_queues; |
|
} while (txq >= dev->real_num_tx_queues); |
|
} |
|
return txq; |
|
} |
|
|
|
static void team_change_rx_flags(struct net_device *dev, int change) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
struct team_port *port; |
|
int inc; |
|
|
|
rcu_read_lock(); |
|
list_for_each_entry_rcu(port, &team->port_list, list) { |
|
if (change & IFF_PROMISC) { |
|
inc = dev->flags & IFF_PROMISC ? 1 : -1; |
|
dev_set_promiscuity(port->dev, inc); |
|
} |
|
if (change & IFF_ALLMULTI) { |
|
inc = dev->flags & IFF_ALLMULTI ? 1 : -1; |
|
dev_set_allmulti(port->dev, inc); |
|
} |
|
} |
|
rcu_read_unlock(); |
|
} |
|
|
|
static void team_set_rx_mode(struct net_device *dev) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
struct team_port *port; |
|
|
|
rcu_read_lock(); |
|
list_for_each_entry_rcu(port, &team->port_list, list) { |
|
dev_uc_sync_multiple(port->dev, dev); |
|
dev_mc_sync_multiple(port->dev, dev); |
|
} |
|
rcu_read_unlock(); |
|
} |
|
|
|
static int team_set_mac_address(struct net_device *dev, void *p) |
|
{ |
|
struct sockaddr *addr = p; |
|
struct team *team = netdev_priv(dev); |
|
struct team_port *port; |
|
|
|
if (dev->type == ARPHRD_ETHER && !is_valid_ether_addr(addr->sa_data)) |
|
return -EADDRNOTAVAIL; |
|
dev_addr_set(dev, addr->sa_data); |
|
mutex_lock(&team->lock); |
|
list_for_each_entry(port, &team->port_list, list) |
|
if (team->ops.port_change_dev_addr) |
|
team->ops.port_change_dev_addr(team, port); |
|
mutex_unlock(&team->lock); |
|
return 0; |
|
} |
|
|
|
static int team_change_mtu(struct net_device *dev, int new_mtu) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
struct team_port *port; |
|
int err; |
|
|
|
/* |
|
* Alhough this is reader, it's guarded by team lock. It's not possible |
|
* to traverse list in reverse under rcu_read_lock |
|
*/ |
|
mutex_lock(&team->lock); |
|
team->port_mtu_change_allowed = true; |
|
list_for_each_entry(port, &team->port_list, list) { |
|
err = dev_set_mtu(port->dev, new_mtu); |
|
if (err) { |
|
netdev_err(dev, "Device %s failed to change mtu", |
|
port->dev->name); |
|
goto unwind; |
|
} |
|
} |
|
team->port_mtu_change_allowed = false; |
|
mutex_unlock(&team->lock); |
|
|
|
dev->mtu = new_mtu; |
|
|
|
return 0; |
|
|
|
unwind: |
|
list_for_each_entry_continue_reverse(port, &team->port_list, list) |
|
dev_set_mtu(port->dev, dev->mtu); |
|
team->port_mtu_change_allowed = false; |
|
mutex_unlock(&team->lock); |
|
|
|
return err; |
|
} |
|
|
|
static void |
|
team_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
struct team_pcpu_stats *p; |
|
u64 rx_packets, rx_bytes, rx_multicast, tx_packets, tx_bytes; |
|
u32 rx_dropped = 0, tx_dropped = 0, rx_nohandler = 0; |
|
unsigned int start; |
|
int i; |
|
|
|
for_each_possible_cpu(i) { |
|
p = per_cpu_ptr(team->pcpu_stats, i); |
|
do { |
|
start = u64_stats_fetch_begin_irq(&p->syncp); |
|
rx_packets = p->rx_packets; |
|
rx_bytes = p->rx_bytes; |
|
rx_multicast = p->rx_multicast; |
|
tx_packets = p->tx_packets; |
|
tx_bytes = p->tx_bytes; |
|
} while (u64_stats_fetch_retry_irq(&p->syncp, start)); |
|
|
|
stats->rx_packets += rx_packets; |
|
stats->rx_bytes += rx_bytes; |
|
stats->multicast += rx_multicast; |
|
stats->tx_packets += tx_packets; |
|
stats->tx_bytes += tx_bytes; |
|
/* |
|
* rx_dropped, tx_dropped & rx_nohandler are u32, |
|
* updated without syncp protection. |
|
*/ |
|
rx_dropped += p->rx_dropped; |
|
tx_dropped += p->tx_dropped; |
|
rx_nohandler += p->rx_nohandler; |
|
} |
|
stats->rx_dropped = rx_dropped; |
|
stats->tx_dropped = tx_dropped; |
|
stats->rx_nohandler = rx_nohandler; |
|
} |
|
|
|
static int team_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
struct team_port *port; |
|
int err; |
|
|
|
/* |
|
* Alhough this is reader, it's guarded by team lock. It's not possible |
|
* to traverse list in reverse under rcu_read_lock |
|
*/ |
|
mutex_lock(&team->lock); |
|
list_for_each_entry(port, &team->port_list, list) { |
|
err = vlan_vid_add(port->dev, proto, vid); |
|
if (err) |
|
goto unwind; |
|
} |
|
mutex_unlock(&team->lock); |
|
|
|
return 0; |
|
|
|
unwind: |
|
list_for_each_entry_continue_reverse(port, &team->port_list, list) |
|
vlan_vid_del(port->dev, proto, vid); |
|
mutex_unlock(&team->lock); |
|
|
|
return err; |
|
} |
|
|
|
static int team_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
struct team_port *port; |
|
|
|
mutex_lock(&team->lock); |
|
list_for_each_entry(port, &team->port_list, list) |
|
vlan_vid_del(port->dev, proto, vid); |
|
mutex_unlock(&team->lock); |
|
|
|
return 0; |
|
} |
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER |
|
static void team_poll_controller(struct net_device *dev) |
|
{ |
|
} |
|
|
|
static void __team_netpoll_cleanup(struct team *team) |
|
{ |
|
struct team_port *port; |
|
|
|
list_for_each_entry(port, &team->port_list, list) |
|
team_port_disable_netpoll(port); |
|
} |
|
|
|
static void team_netpoll_cleanup(struct net_device *dev) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
|
|
mutex_lock(&team->lock); |
|
__team_netpoll_cleanup(team); |
|
mutex_unlock(&team->lock); |
|
} |
|
|
|
static int team_netpoll_setup(struct net_device *dev, |
|
struct netpoll_info *npifo) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
struct team_port *port; |
|
int err = 0; |
|
|
|
mutex_lock(&team->lock); |
|
list_for_each_entry(port, &team->port_list, list) { |
|
err = __team_port_enable_netpoll(port); |
|
if (err) { |
|
__team_netpoll_cleanup(team); |
|
break; |
|
} |
|
} |
|
mutex_unlock(&team->lock); |
|
return err; |
|
} |
|
#endif |
|
|
|
static int team_add_slave(struct net_device *dev, struct net_device *port_dev, |
|
struct netlink_ext_ack *extack) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
int err; |
|
|
|
mutex_lock(&team->lock); |
|
err = team_port_add(team, port_dev, extack); |
|
mutex_unlock(&team->lock); |
|
|
|
if (!err) |
|
netdev_change_features(dev); |
|
|
|
return err; |
|
} |
|
|
|
static int team_del_slave(struct net_device *dev, struct net_device *port_dev) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
int err; |
|
|
|
mutex_lock(&team->lock); |
|
err = team_port_del(team, port_dev); |
|
mutex_unlock(&team->lock); |
|
|
|
if (err) |
|
return err; |
|
|
|
if (netif_is_team_master(port_dev)) { |
|
lockdep_unregister_key(&team->team_lock_key); |
|
lockdep_register_key(&team->team_lock_key); |
|
lockdep_set_class(&team->lock, &team->team_lock_key); |
|
} |
|
netdev_change_features(dev); |
|
|
|
return err; |
|
} |
|
|
|
static netdev_features_t team_fix_features(struct net_device *dev, |
|
netdev_features_t features) |
|
{ |
|
struct team_port *port; |
|
struct team *team = netdev_priv(dev); |
|
netdev_features_t mask; |
|
|
|
mask = features; |
|
features &= ~NETIF_F_ONE_FOR_ALL; |
|
features |= NETIF_F_ALL_FOR_ALL; |
|
|
|
rcu_read_lock(); |
|
list_for_each_entry_rcu(port, &team->port_list, list) { |
|
features = netdev_increment_features(features, |
|
port->dev->features, |
|
mask); |
|
} |
|
rcu_read_unlock(); |
|
|
|
features = netdev_add_tso_features(features, mask); |
|
|
|
return features; |
|
} |
|
|
|
static int team_change_carrier(struct net_device *dev, bool new_carrier) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
|
|
team->user_carrier_enabled = true; |
|
|
|
if (new_carrier) |
|
netif_carrier_on(dev); |
|
else |
|
netif_carrier_off(dev); |
|
return 0; |
|
} |
|
|
|
static const struct net_device_ops team_netdev_ops = { |
|
.ndo_init = team_init, |
|
.ndo_uninit = team_uninit, |
|
.ndo_open = team_open, |
|
.ndo_stop = team_close, |
|
.ndo_start_xmit = team_xmit, |
|
.ndo_select_queue = team_select_queue, |
|
.ndo_change_rx_flags = team_change_rx_flags, |
|
.ndo_set_rx_mode = team_set_rx_mode, |
|
.ndo_set_mac_address = team_set_mac_address, |
|
.ndo_change_mtu = team_change_mtu, |
|
.ndo_get_stats64 = team_get_stats64, |
|
.ndo_vlan_rx_add_vid = team_vlan_rx_add_vid, |
|
.ndo_vlan_rx_kill_vid = team_vlan_rx_kill_vid, |
|
#ifdef CONFIG_NET_POLL_CONTROLLER |
|
.ndo_poll_controller = team_poll_controller, |
|
.ndo_netpoll_setup = team_netpoll_setup, |
|
.ndo_netpoll_cleanup = team_netpoll_cleanup, |
|
#endif |
|
.ndo_add_slave = team_add_slave, |
|
.ndo_del_slave = team_del_slave, |
|
.ndo_fix_features = team_fix_features, |
|
.ndo_change_carrier = team_change_carrier, |
|
.ndo_features_check = passthru_features_check, |
|
}; |
|
|
|
/*********************** |
|
* ethtool interface |
|
***********************/ |
|
|
|
static void team_ethtool_get_drvinfo(struct net_device *dev, |
|
struct ethtool_drvinfo *drvinfo) |
|
{ |
|
strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver)); |
|
strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version)); |
|
} |
|
|
|
static int team_ethtool_get_link_ksettings(struct net_device *dev, |
|
struct ethtool_link_ksettings *cmd) |
|
{ |
|
struct team *team= netdev_priv(dev); |
|
unsigned long speed = 0; |
|
struct team_port *port; |
|
|
|
cmd->base.duplex = DUPLEX_UNKNOWN; |
|
cmd->base.port = PORT_OTHER; |
|
|
|
rcu_read_lock(); |
|
list_for_each_entry_rcu(port, &team->port_list, list) { |
|
if (team_port_txable(port)) { |
|
if (port->state.speed != SPEED_UNKNOWN) |
|
speed += port->state.speed; |
|
if (cmd->base.duplex == DUPLEX_UNKNOWN && |
|
port->state.duplex != DUPLEX_UNKNOWN) |
|
cmd->base.duplex = port->state.duplex; |
|
} |
|
} |
|
rcu_read_unlock(); |
|
|
|
cmd->base.speed = speed ? : SPEED_UNKNOWN; |
|
|
|
return 0; |
|
} |
|
|
|
static const struct ethtool_ops team_ethtool_ops = { |
|
.get_drvinfo = team_ethtool_get_drvinfo, |
|
.get_link = ethtool_op_get_link, |
|
.get_link_ksettings = team_ethtool_get_link_ksettings, |
|
}; |
|
|
|
/*********************** |
|
* rt netlink interface |
|
***********************/ |
|
|
|
static void team_setup_by_port(struct net_device *dev, |
|
struct net_device *port_dev) |
|
{ |
|
dev->header_ops = port_dev->header_ops; |
|
dev->type = port_dev->type; |
|
dev->hard_header_len = port_dev->hard_header_len; |
|
dev->needed_headroom = port_dev->needed_headroom; |
|
dev->addr_len = port_dev->addr_len; |
|
dev->mtu = port_dev->mtu; |
|
memcpy(dev->broadcast, port_dev->broadcast, port_dev->addr_len); |
|
eth_hw_addr_inherit(dev, port_dev); |
|
} |
|
|
|
static int team_dev_type_check_change(struct net_device *dev, |
|
struct net_device *port_dev) |
|
{ |
|
struct team *team = netdev_priv(dev); |
|
char *portname = port_dev->name; |
|
int err; |
|
|
|
if (dev->type == port_dev->type) |
|
return 0; |
|
if (!list_empty(&team->port_list)) { |
|
netdev_err(dev, "Device %s is of different type\n", portname); |
|
return -EBUSY; |
|
} |
|
err = call_netdevice_notifiers(NETDEV_PRE_TYPE_CHANGE, dev); |
|
err = notifier_to_errno(err); |
|
if (err) { |
|
netdev_err(dev, "Refused to change device type\n"); |
|
return err; |
|
} |
|
dev_uc_flush(dev); |
|
dev_mc_flush(dev); |
|
team_setup_by_port(dev, port_dev); |
|
call_netdevice_notifiers(NETDEV_POST_TYPE_CHANGE, dev); |
|
return 0; |
|
} |
|
|
|
static void team_setup(struct net_device *dev) |
|
{ |
|
ether_setup(dev); |
|
dev->max_mtu = ETH_MAX_MTU; |
|
|
|
dev->netdev_ops = &team_netdev_ops; |
|
dev->ethtool_ops = &team_ethtool_ops; |
|
dev->needs_free_netdev = true; |
|
dev->priv_destructor = team_destructor; |
|
dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); |
|
dev->priv_flags |= IFF_NO_QUEUE; |
|
dev->priv_flags |= IFF_TEAM; |
|
|
|
/* |
|
* Indicate we support unicast address filtering. That way core won't |
|
* bring us to promisc mode in case a unicast addr is added. |
|
* Let this up to underlay drivers. |
|
*/ |
|
dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE; |
|
|
|
dev->features |= NETIF_F_LLTX; |
|
dev->features |= NETIF_F_GRO; |
|
|
|
/* Don't allow team devices to change network namespaces. */ |
|
dev->features |= NETIF_F_NETNS_LOCAL; |
|
|
|
dev->hw_features = TEAM_VLAN_FEATURES | |
|
NETIF_F_HW_VLAN_CTAG_RX | |
|
NETIF_F_HW_VLAN_CTAG_FILTER; |
|
|
|
dev->hw_features |= NETIF_F_GSO_ENCAP_ALL; |
|
dev->features |= dev->hw_features; |
|
dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX; |
|
} |
|
|
|
static int team_newlink(struct net *src_net, struct net_device *dev, |
|
struct nlattr *tb[], struct nlattr *data[], |
|
struct netlink_ext_ack *extack) |
|
{ |
|
if (tb[IFLA_ADDRESS] == NULL) |
|
eth_hw_addr_random(dev); |
|
|
|
return register_netdevice(dev); |
|
} |
|
|
|
static int team_validate(struct nlattr *tb[], struct nlattr *data[], |
|
struct netlink_ext_ack *extack) |
|
{ |
|
if (tb[IFLA_ADDRESS]) { |
|
if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN) |
|
return -EINVAL; |
|
if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS]))) |
|
return -EADDRNOTAVAIL; |
|
} |
|
return 0; |
|
} |
|
|
|
static unsigned int team_get_num_tx_queues(void) |
|
{ |
|
return TEAM_DEFAULT_NUM_TX_QUEUES; |
|
} |
|
|
|
static unsigned int team_get_num_rx_queues(void) |
|
{ |
|
return TEAM_DEFAULT_NUM_RX_QUEUES; |
|
} |
|
|
|
static struct rtnl_link_ops team_link_ops __read_mostly = { |
|
.kind = DRV_NAME, |
|
.priv_size = sizeof(struct team), |
|
.setup = team_setup, |
|
.newlink = team_newlink, |
|
.validate = team_validate, |
|
.get_num_tx_queues = team_get_num_tx_queues, |
|
.get_num_rx_queues = team_get_num_rx_queues, |
|
}; |
|
|
|
|
|
/*********************************** |
|
* Generic netlink custom interface |
|
***********************************/ |
|
|
|
static struct genl_family team_nl_family; |
|
|
|
static const struct nla_policy team_nl_policy[TEAM_ATTR_MAX + 1] = { |
|
[TEAM_ATTR_UNSPEC] = { .type = NLA_UNSPEC, }, |
|
[TEAM_ATTR_TEAM_IFINDEX] = { .type = NLA_U32 }, |
|
[TEAM_ATTR_LIST_OPTION] = { .type = NLA_NESTED }, |
|
[TEAM_ATTR_LIST_PORT] = { .type = NLA_NESTED }, |
|
}; |
|
|
|
static const struct nla_policy |
|
team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = { |
|
[TEAM_ATTR_OPTION_UNSPEC] = { .type = NLA_UNSPEC, }, |
|
[TEAM_ATTR_OPTION_NAME] = { |
|
.type = NLA_STRING, |
|
.len = TEAM_STRING_MAX_LEN, |
|
}, |
|
[TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG }, |
|
[TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 }, |
|
[TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY }, |
|
[TEAM_ATTR_OPTION_PORT_IFINDEX] = { .type = NLA_U32 }, |
|
[TEAM_ATTR_OPTION_ARRAY_INDEX] = { .type = NLA_U32 }, |
|
}; |
|
|
|
static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info) |
|
{ |
|
struct sk_buff *msg; |
|
void *hdr; |
|
int err; |
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
|
if (!msg) |
|
return -ENOMEM; |
|
|
|
hdr = genlmsg_put(msg, info->snd_portid, info->snd_seq, |
|
&team_nl_family, 0, TEAM_CMD_NOOP); |
|
if (!hdr) { |
|
err = -EMSGSIZE; |
|
goto err_msg_put; |
|
} |
|
|
|
genlmsg_end(msg, hdr); |
|
|
|
return genlmsg_unicast(genl_info_net(info), msg, info->snd_portid); |
|
|
|
err_msg_put: |
|
nlmsg_free(msg); |
|
|
|
return err; |
|
} |
|
|
|
/* |
|
* Netlink cmd functions should be locked by following two functions. |
|
* Since dev gets held here, that ensures dev won't disappear in between. |
|
*/ |
|
static struct team *team_nl_team_get(struct genl_info *info) |
|
{ |
|
struct net *net = genl_info_net(info); |
|
int ifindex; |
|
struct net_device *dev; |
|
struct team *team; |
|
|
|
if (!info->attrs[TEAM_ATTR_TEAM_IFINDEX]) |
|
return NULL; |
|
|
|
ifindex = nla_get_u32(info->attrs[TEAM_ATTR_TEAM_IFINDEX]); |
|
dev = dev_get_by_index(net, ifindex); |
|
if (!dev || dev->netdev_ops != &team_netdev_ops) { |
|
if (dev) |
|
dev_put(dev); |
|
return NULL; |
|
} |
|
|
|
team = netdev_priv(dev); |
|
mutex_lock(&team->lock); |
|
return team; |
|
} |
|
|
|
static void team_nl_team_put(struct team *team) |
|
{ |
|
mutex_unlock(&team->lock); |
|
dev_put(team->dev); |
|
} |
|
|
|
typedef int team_nl_send_func_t(struct sk_buff *skb, |
|
struct team *team, u32 portid); |
|
|
|
static int team_nl_send_unicast(struct sk_buff *skb, struct team *team, u32 portid) |
|
{ |
|
return genlmsg_unicast(dev_net(team->dev), skb, portid); |
|
} |
|
|
|
static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team, |
|
struct team_option_inst *opt_inst) |
|
{ |
|
struct nlattr *option_item; |
|
struct team_option *option = opt_inst->option; |
|
struct team_option_inst_info *opt_inst_info = &opt_inst->info; |
|
struct team_gsetter_ctx ctx; |
|
int err; |
|
|
|
ctx.info = opt_inst_info; |
|
err = team_option_get(team, opt_inst, &ctx); |
|
if (err) |
|
return err; |
|
|
|
option_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_OPTION); |
|
if (!option_item) |
|
return -EMSGSIZE; |
|
|
|
if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name)) |
|
goto nest_cancel; |
|
if (opt_inst_info->port && |
|
nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX, |
|
opt_inst_info->port->dev->ifindex)) |
|
goto nest_cancel; |
|
if (opt_inst->option->array_size && |
|
nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX, |
|
opt_inst_info->array_index)) |
|
goto nest_cancel; |
|
|
|
switch (option->type) { |
|
case TEAM_OPTION_TYPE_U32: |
|
if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32)) |
|
goto nest_cancel; |
|
if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val)) |
|
goto nest_cancel; |
|
break; |
|
case TEAM_OPTION_TYPE_STRING: |
|
if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING)) |
|
goto nest_cancel; |
|
if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA, |
|
ctx.data.str_val)) |
|
goto nest_cancel; |
|
break; |
|
case TEAM_OPTION_TYPE_BINARY: |
|
if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY)) |
|
goto nest_cancel; |
|
if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len, |
|
ctx.data.bin_val.ptr)) |
|
goto nest_cancel; |
|
break; |
|
case TEAM_OPTION_TYPE_BOOL: |
|
if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG)) |
|
goto nest_cancel; |
|
if (ctx.data.bool_val && |
|
nla_put_flag(skb, TEAM_ATTR_OPTION_DATA)) |
|
goto nest_cancel; |
|
break; |
|
case TEAM_OPTION_TYPE_S32: |
|
if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_S32)) |
|
goto nest_cancel; |
|
if (nla_put_s32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.s32_val)) |
|
goto nest_cancel; |
|
break; |
|
default: |
|
BUG(); |
|
} |
|
if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED)) |
|
goto nest_cancel; |
|
if (opt_inst->changed) { |
|
if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED)) |
|
goto nest_cancel; |
|
opt_inst->changed = false; |
|
} |
|
nla_nest_end(skb, option_item); |
|
return 0; |
|
|
|
nest_cancel: |
|
nla_nest_cancel(skb, option_item); |
|
return -EMSGSIZE; |
|
} |
|
|
|
static int __send_and_alloc_skb(struct sk_buff **pskb, |
|
struct team *team, u32 portid, |
|
team_nl_send_func_t *send_func) |
|
{ |
|
int err; |
|
|
|
if (*pskb) { |
|
err = send_func(*pskb, team, portid); |
|
if (err) |
|
return err; |
|
} |
|
*pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); |
|
if (!*pskb) |
|
return -ENOMEM; |
|
return 0; |
|
} |
|
|
|
static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq, |
|
int flags, team_nl_send_func_t *send_func, |
|
struct list_head *sel_opt_inst_list) |
|
{ |
|
struct nlattr *option_list; |
|
struct nlmsghdr *nlh; |
|
void *hdr; |
|
struct team_option_inst *opt_inst; |
|
int err; |
|
struct sk_buff *skb = NULL; |
|
bool incomplete; |
|
int i; |
|
|
|
opt_inst = list_first_entry(sel_opt_inst_list, |
|
struct team_option_inst, tmp_list); |
|
|
|
start_again: |
|
err = __send_and_alloc_skb(&skb, team, portid, send_func); |
|
if (err) |
|
return err; |
|
|
|
hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, |
|
TEAM_CMD_OPTIONS_GET); |
|
if (!hdr) { |
|
nlmsg_free(skb); |
|
return -EMSGSIZE; |
|
} |
|
|
|
if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
|
goto nla_put_failure; |
|
option_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_OPTION); |
|
if (!option_list) |
|
goto nla_put_failure; |
|
|
|
i = 0; |
|
incomplete = false; |
|
list_for_each_entry_from(opt_inst, sel_opt_inst_list, tmp_list) { |
|
err = team_nl_fill_one_option_get(skb, team, opt_inst); |
|
if (err) { |
|
if (err == -EMSGSIZE) { |
|
if (!i) |
|
goto errout; |
|
incomplete = true; |
|
break; |
|
} |
|
goto errout; |
|
} |
|
i++; |
|
} |
|
|
|
nla_nest_end(skb, option_list); |
|
genlmsg_end(skb, hdr); |
|
if (incomplete) |
|
goto start_again; |
|
|
|
send_done: |
|
nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); |
|
if (!nlh) { |
|
err = __send_and_alloc_skb(&skb, team, portid, send_func); |
|
if (err) |
|
return err; |
|
goto send_done; |
|
} |
|
|
|
return send_func(skb, team, portid); |
|
|
|
nla_put_failure: |
|
err = -EMSGSIZE; |
|
errout: |
|
nlmsg_free(skb); |
|
return err; |
|
} |
|
|
|
static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info) |
|
{ |
|
struct team *team; |
|
struct team_option_inst *opt_inst; |
|
int err; |
|
LIST_HEAD(sel_opt_inst_list); |
|
|
|
team = team_nl_team_get(info); |
|
if (!team) |
|
return -EINVAL; |
|
|
|
list_for_each_entry(opt_inst, &team->option_inst_list, list) |
|
list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); |
|
err = team_nl_send_options_get(team, info->snd_portid, info->snd_seq, |
|
NLM_F_ACK, team_nl_send_unicast, |
|
&sel_opt_inst_list); |
|
|
|
team_nl_team_put(team); |
|
|
|
return err; |
|
} |
|
|
|
static int team_nl_send_event_options_get(struct team *team, |
|
struct list_head *sel_opt_inst_list); |
|
|
|
static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info) |
|
{ |
|
struct team *team; |
|
int err = 0; |
|
int i; |
|
struct nlattr *nl_option; |
|
|
|
rtnl_lock(); |
|
|
|
team = team_nl_team_get(info); |
|
if (!team) { |
|
err = -EINVAL; |
|
goto rtnl_unlock; |
|
} |
|
|
|
err = -EINVAL; |
|
if (!info->attrs[TEAM_ATTR_LIST_OPTION]) { |
|
err = -EINVAL; |
|
goto team_put; |
|
} |
|
|
|
nla_for_each_nested(nl_option, info->attrs[TEAM_ATTR_LIST_OPTION], i) { |
|
struct nlattr *opt_attrs[TEAM_ATTR_OPTION_MAX + 1]; |
|
struct nlattr *attr; |
|
struct nlattr *attr_data; |
|
LIST_HEAD(opt_inst_list); |
|
enum team_option_type opt_type; |
|
int opt_port_ifindex = 0; /* != 0 for per-port options */ |
|
u32 opt_array_index = 0; |
|
bool opt_is_array = false; |
|
struct team_option_inst *opt_inst; |
|
char *opt_name; |
|
bool opt_found = false; |
|
|
|
if (nla_type(nl_option) != TEAM_ATTR_ITEM_OPTION) { |
|
err = -EINVAL; |
|
goto team_put; |
|
} |
|
err = nla_parse_nested_deprecated(opt_attrs, |
|
TEAM_ATTR_OPTION_MAX, |
|
nl_option, |
|
team_nl_option_policy, |
|
info->extack); |
|
if (err) |
|
goto team_put; |
|
if (!opt_attrs[TEAM_ATTR_OPTION_NAME] || |
|
!opt_attrs[TEAM_ATTR_OPTION_TYPE]) { |
|
err = -EINVAL; |
|
goto team_put; |
|
} |
|
switch (nla_get_u8(opt_attrs[TEAM_ATTR_OPTION_TYPE])) { |
|
case NLA_U32: |
|
opt_type = TEAM_OPTION_TYPE_U32; |
|
break; |
|
case NLA_STRING: |
|
opt_type = TEAM_OPTION_TYPE_STRING; |
|
break; |
|
case NLA_BINARY: |
|
opt_type = TEAM_OPTION_TYPE_BINARY; |
|
break; |
|
case NLA_FLAG: |
|
opt_type = TEAM_OPTION_TYPE_BOOL; |
|
break; |
|
case NLA_S32: |
|
opt_type = TEAM_OPTION_TYPE_S32; |
|
break; |
|
default: |
|
goto team_put; |
|
} |
|
|
|
attr_data = opt_attrs[TEAM_ATTR_OPTION_DATA]; |
|
if (opt_type != TEAM_OPTION_TYPE_BOOL && !attr_data) { |
|
err = -EINVAL; |
|
goto team_put; |
|
} |
|
|
|
opt_name = nla_data(opt_attrs[TEAM_ATTR_OPTION_NAME]); |
|
attr = opt_attrs[TEAM_ATTR_OPTION_PORT_IFINDEX]; |
|
if (attr) |
|
opt_port_ifindex = nla_get_u32(attr); |
|
|
|
attr = opt_attrs[TEAM_ATTR_OPTION_ARRAY_INDEX]; |
|
if (attr) { |
|
opt_is_array = true; |
|
opt_array_index = nla_get_u32(attr); |
|
} |
|
|
|
list_for_each_entry(opt_inst, &team->option_inst_list, list) { |
|
struct team_option *option = opt_inst->option; |
|
struct team_gsetter_ctx ctx; |
|
struct team_option_inst_info *opt_inst_info; |
|
int tmp_ifindex; |
|
|
|
opt_inst_info = &opt_inst->info; |
|
tmp_ifindex = opt_inst_info->port ? |
|
opt_inst_info->port->dev->ifindex : 0; |
|
if (option->type != opt_type || |
|
strcmp(option->name, opt_name) || |
|
tmp_ifindex != opt_port_ifindex || |
|
(option->array_size && !opt_is_array) || |
|
opt_inst_info->array_index != opt_array_index) |
|
continue; |
|
opt_found = true; |
|
ctx.info = opt_inst_info; |
|
switch (opt_type) { |
|
case TEAM_OPTION_TYPE_U32: |
|
ctx.data.u32_val = nla_get_u32(attr_data); |
|
break; |
|
case TEAM_OPTION_TYPE_STRING: |
|
if (nla_len(attr_data) > TEAM_STRING_MAX_LEN) { |
|
err = -EINVAL; |
|
goto team_put; |
|
} |
|
ctx.data.str_val = nla_data(attr_data); |
|
break; |
|
case TEAM_OPTION_TYPE_BINARY: |
|
ctx.data.bin_val.len = nla_len(attr_data); |
|
ctx.data.bin_val.ptr = nla_data(attr_data); |
|
break; |
|
case TEAM_OPTION_TYPE_BOOL: |
|
ctx.data.bool_val = attr_data ? true : false; |
|
break; |
|
case TEAM_OPTION_TYPE_S32: |
|
ctx.data.s32_val = nla_get_s32(attr_data); |
|
break; |
|
default: |
|
BUG(); |
|
} |
|
err = team_option_set(team, opt_inst, &ctx); |
|
if (err) |
|
goto team_put; |
|
opt_inst->changed = true; |
|
list_add(&opt_inst->tmp_list, &opt_inst_list); |
|
} |
|
if (!opt_found) { |
|
err = -ENOENT; |
|
goto team_put; |
|
} |
|
|
|
err = team_nl_send_event_options_get(team, &opt_inst_list); |
|
if (err) |
|
break; |
|
} |
|
|
|
team_put: |
|
team_nl_team_put(team); |
|
rtnl_unlock: |
|
rtnl_unlock(); |
|
return err; |
|
} |
|
|
|
static int team_nl_fill_one_port_get(struct sk_buff *skb, |
|
struct team_port *port) |
|
{ |
|
struct nlattr *port_item; |
|
|
|
port_item = nla_nest_start_noflag(skb, TEAM_ATTR_ITEM_PORT); |
|
if (!port_item) |
|
goto nest_cancel; |
|
if (nla_put_u32(skb, TEAM_ATTR_PORT_IFINDEX, port->dev->ifindex)) |
|
goto nest_cancel; |
|
if (port->changed) { |
|
if (nla_put_flag(skb, TEAM_ATTR_PORT_CHANGED)) |
|
goto nest_cancel; |
|
port->changed = false; |
|
} |
|
if ((port->removed && |
|
nla_put_flag(skb, TEAM_ATTR_PORT_REMOVED)) || |
|
(port->state.linkup && |
|
nla_put_flag(skb, TEAM_ATTR_PORT_LINKUP)) || |
|
nla_put_u32(skb, TEAM_ATTR_PORT_SPEED, port->state.speed) || |
|
nla_put_u8(skb, TEAM_ATTR_PORT_DUPLEX, port->state.duplex)) |
|
goto nest_cancel; |
|
nla_nest_end(skb, port_item); |
|
return 0; |
|
|
|
nest_cancel: |
|
nla_nest_cancel(skb, port_item); |
|
return -EMSGSIZE; |
|
} |
|
|
|
static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq, |
|
int flags, team_nl_send_func_t *send_func, |
|
struct team_port *one_port) |
|
{ |
|
struct nlattr *port_list; |
|
struct nlmsghdr *nlh; |
|
void *hdr; |
|
struct team_port *port; |
|
int err; |
|
struct sk_buff *skb = NULL; |
|
bool incomplete; |
|
int i; |
|
|
|
port = list_first_entry_or_null(&team->port_list, |
|
struct team_port, list); |
|
|
|
start_again: |
|
err = __send_and_alloc_skb(&skb, team, portid, send_func); |
|
if (err) |
|
return err; |
|
|
|
hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI, |
|
TEAM_CMD_PORT_LIST_GET); |
|
if (!hdr) { |
|
nlmsg_free(skb); |
|
return -EMSGSIZE; |
|
} |
|
|
|
if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex)) |
|
goto nla_put_failure; |
|
port_list = nla_nest_start_noflag(skb, TEAM_ATTR_LIST_PORT); |
|
if (!port_list) |
|
goto nla_put_failure; |
|
|
|
i = 0; |
|
incomplete = false; |
|
|
|
/* If one port is selected, called wants to send port list containing |
|
* only this port. Otherwise go through all listed ports and send all |
|
*/ |
|
if (one_port) { |
|
err = team_nl_fill_one_port_get(skb, one_port); |
|
if (err) |
|
goto errout; |
|
} else if (port) { |
|
list_for_each_entry_from(port, &team->port_list, list) { |
|
err = team_nl_fill_one_port_get(skb, port); |
|
if (err) { |
|
if (err == -EMSGSIZE) { |
|
if (!i) |
|
goto errout; |
|
incomplete = true; |
|
break; |
|
} |
|
goto errout; |
|
} |
|
i++; |
|
} |
|
} |
|
|
|
nla_nest_end(skb, port_list); |
|
genlmsg_end(skb, hdr); |
|
if (incomplete) |
|
goto start_again; |
|
|
|
send_done: |
|
nlh = nlmsg_put(skb, portid, seq, NLMSG_DONE, 0, flags | NLM_F_MULTI); |
|
if (!nlh) { |
|
err = __send_and_alloc_skb(&skb, team, portid, send_func); |
|
if (err) |
|
return err; |
|
goto send_done; |
|
} |
|
|
|
return send_func(skb, team, portid); |
|
|
|
nla_put_failure: |
|
err = -EMSGSIZE; |
|
errout: |
|
nlmsg_free(skb); |
|
return err; |
|
} |
|
|
|
static int team_nl_cmd_port_list_get(struct sk_buff *skb, |
|
struct genl_info *info) |
|
{ |
|
struct team *team; |
|
int err; |
|
|
|
team = team_nl_team_get(info); |
|
if (!team) |
|
return -EINVAL; |
|
|
|
err = team_nl_send_port_list_get(team, info->snd_portid, info->snd_seq, |
|
NLM_F_ACK, team_nl_send_unicast, NULL); |
|
|
|
team_nl_team_put(team); |
|
|
|
return err; |
|
} |
|
|
|
static const struct genl_small_ops team_nl_ops[] = { |
|
{ |
|
.cmd = TEAM_CMD_NOOP, |
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
|
.doit = team_nl_cmd_noop, |
|
}, |
|
{ |
|
.cmd = TEAM_CMD_OPTIONS_SET, |
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
|
.doit = team_nl_cmd_options_set, |
|
.flags = GENL_ADMIN_PERM, |
|
}, |
|
{ |
|
.cmd = TEAM_CMD_OPTIONS_GET, |
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
|
.doit = team_nl_cmd_options_get, |
|
.flags = GENL_ADMIN_PERM, |
|
}, |
|
{ |
|
.cmd = TEAM_CMD_PORT_LIST_GET, |
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, |
|
.doit = team_nl_cmd_port_list_get, |
|
.flags = GENL_ADMIN_PERM, |
|
}, |
|
}; |
|
|
|
static const struct genl_multicast_group team_nl_mcgrps[] = { |
|
{ .name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME, }, |
|
}; |
|
|
|
static struct genl_family team_nl_family __ro_after_init = { |
|
.name = TEAM_GENL_NAME, |
|
.version = TEAM_GENL_VERSION, |
|
.maxattr = TEAM_ATTR_MAX, |
|
.policy = team_nl_policy, |
|
.netnsok = true, |
|
.module = THIS_MODULE, |
|
.small_ops = team_nl_ops, |
|
.n_small_ops = ARRAY_SIZE(team_nl_ops), |
|
.mcgrps = team_nl_mcgrps, |
|
.n_mcgrps = ARRAY_SIZE(team_nl_mcgrps), |
|
}; |
|
|
|
static int team_nl_send_multicast(struct sk_buff *skb, |
|
struct team *team, u32 portid) |
|
{ |
|
return genlmsg_multicast_netns(&team_nl_family, dev_net(team->dev), |
|
skb, 0, 0, GFP_KERNEL); |
|
} |
|
|
|
static int team_nl_send_event_options_get(struct team *team, |
|
struct list_head *sel_opt_inst_list) |
|
{ |
|
return team_nl_send_options_get(team, 0, 0, 0, team_nl_send_multicast, |
|
sel_opt_inst_list); |
|
} |
|
|
|
static int team_nl_send_event_port_get(struct team *team, |
|
struct team_port *port) |
|
{ |
|
return team_nl_send_port_list_get(team, 0, 0, 0, team_nl_send_multicast, |
|
port); |
|
} |
|
|
|
static int __init team_nl_init(void) |
|
{ |
|
return genl_register_family(&team_nl_family); |
|
} |
|
|
|
static void team_nl_fini(void) |
|
{ |
|
genl_unregister_family(&team_nl_family); |
|
} |
|
|
|
|
|
/****************** |
|
* Change checkers |
|
******************/ |
|
|
|
static void __team_options_change_check(struct team *team) |
|
{ |
|
int err; |
|
struct team_option_inst *opt_inst; |
|
LIST_HEAD(sel_opt_inst_list); |
|
|
|
list_for_each_entry(opt_inst, &team->option_inst_list, list) { |
|
if (opt_inst->changed) |
|
list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list); |
|
} |
|
err = team_nl_send_event_options_get(team, &sel_opt_inst_list); |
|
if (err && err != -ESRCH) |
|
netdev_warn(team->dev, "Failed to send options change via netlink (err %d)\n", |
|
err); |
|
} |
|
|
|
/* rtnl lock is held */ |
|
|
|
static void __team_port_change_send(struct team_port *port, bool linkup) |
|
{ |
|
int err; |
|
|
|
port->changed = true; |
|
port->state.linkup = linkup; |
|
team_refresh_port_linkup(port); |
|
if (linkup) { |
|
struct ethtool_link_ksettings ecmd; |
|
|
|
err = __ethtool_get_link_ksettings(port->dev, &ecmd); |
|
if (!err) { |
|
port->state.speed = ecmd.base.speed; |
|
port->state.duplex = ecmd.base.duplex; |
|
goto send_event; |
|
} |
|
} |
|
port->state.speed = 0; |
|
port->state.duplex = 0; |
|
|
|
send_event: |
|
err = team_nl_send_event_port_get(port->team, port); |
|
if (err && err != -ESRCH) |
|
netdev_warn(port->team->dev, "Failed to send port change of device %s via netlink (err %d)\n", |
|
port->dev->name, err); |
|
|
|
} |
|
|
|
static void __team_carrier_check(struct team *team) |
|
{ |
|
struct team_port *port; |
|
bool team_linkup; |
|
|
|
if (team->user_carrier_enabled) |
|
return; |
|
|
|
team_linkup = false; |
|
list_for_each_entry(port, &team->port_list, list) { |
|
if (port->linkup) { |
|
team_linkup = true; |
|
break; |
|
} |
|
} |
|
|
|
if (team_linkup) |
|
netif_carrier_on(team->dev); |
|
else |
|
netif_carrier_off(team->dev); |
|
} |
|
|
|
static void __team_port_change_check(struct team_port *port, bool linkup) |
|
{ |
|
if (port->state.linkup != linkup) |
|
__team_port_change_send(port, linkup); |
|
__team_carrier_check(port->team); |
|
} |
|
|
|
static void __team_port_change_port_added(struct team_port *port, bool linkup) |
|
{ |
|
__team_port_change_send(port, linkup); |
|
__team_carrier_check(port->team); |
|
} |
|
|
|
static void __team_port_change_port_removed(struct team_port *port) |
|
{ |
|
port->removed = true; |
|
__team_port_change_send(port, false); |
|
__team_carrier_check(port->team); |
|
} |
|
|
|
static void team_port_change_check(struct team_port *port, bool linkup) |
|
{ |
|
struct team *team = port->team; |
|
|
|
mutex_lock(&team->lock); |
|
__team_port_change_check(port, linkup); |
|
mutex_unlock(&team->lock); |
|
} |
|
|
|
|
|
/************************************ |
|
* Net device notifier event handler |
|
************************************/ |
|
|
|
static int team_device_event(struct notifier_block *unused, |
|
unsigned long event, void *ptr) |
|
{ |
|
struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
|
struct team_port *port; |
|
|
|
port = team_port_get_rtnl(dev); |
|
if (!port) |
|
return NOTIFY_DONE; |
|
|
|
switch (event) { |
|
case NETDEV_UP: |
|
if (netif_oper_up(dev)) |
|
team_port_change_check(port, true); |
|
break; |
|
case NETDEV_DOWN: |
|
team_port_change_check(port, false); |
|
break; |
|
case NETDEV_CHANGE: |
|
if (netif_running(port->dev)) |
|
team_port_change_check(port, |
|
!!netif_oper_up(port->dev)); |
|
break; |
|
case NETDEV_UNREGISTER: |
|
team_del_slave(port->team->dev, dev); |
|
break; |
|
case NETDEV_FEAT_CHANGE: |
|
team_compute_features(port->team); |
|
break; |
|
case NETDEV_PRECHANGEMTU: |
|
/* Forbid to change mtu of underlaying device */ |
|
if (!port->team->port_mtu_change_allowed) |
|
return NOTIFY_BAD; |
|
break; |
|
case NETDEV_PRE_TYPE_CHANGE: |
|
/* Forbid to change type of underlaying device */ |
|
return NOTIFY_BAD; |
|
case NETDEV_RESEND_IGMP: |
|
/* Propagate to master device */ |
|
call_netdevice_notifiers(event, port->team->dev); |
|
break; |
|
} |
|
return NOTIFY_DONE; |
|
} |
|
|
|
static struct notifier_block team_notifier_block __read_mostly = { |
|
.notifier_call = team_device_event, |
|
}; |
|
|
|
|
|
/*********************** |
|
* Module init and exit |
|
***********************/ |
|
|
|
static int __init team_module_init(void) |
|
{ |
|
int err; |
|
|
|
register_netdevice_notifier(&team_notifier_block); |
|
|
|
err = rtnl_link_register(&team_link_ops); |
|
if (err) |
|
goto err_rtnl_reg; |
|
|
|
err = team_nl_init(); |
|
if (err) |
|
goto err_nl_init; |
|
|
|
return 0; |
|
|
|
err_nl_init: |
|
rtnl_link_unregister(&team_link_ops); |
|
|
|
err_rtnl_reg: |
|
unregister_netdevice_notifier(&team_notifier_block); |
|
|
|
return err; |
|
} |
|
|
|
static void __exit team_module_exit(void) |
|
{ |
|
team_nl_fini(); |
|
rtnl_link_unregister(&team_link_ops); |
|
unregister_netdevice_notifier(&team_notifier_block); |
|
} |
|
|
|
module_init(team_module_init); |
|
module_exit(team_module_exit); |
|
|
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_AUTHOR("Jiri Pirko <[email protected]>"); |
|
MODULE_DESCRIPTION("Ethernet team device driver"); |
|
MODULE_ALIAS_RTNL_LINK(DRV_NAME);
|
|
|