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Release 4.8 net/hsr/hsr_main.c

Directory: net/hsr
/* Copyright 2011-2014 Autronica Fire and Security AS
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 * Author(s):
 *      2011-2014 Arvid Brodin,

#include <linux/netdevice.h>
#include <linux/rculist.h>
#include <linux/timer.h>
#include <linux/etherdevice.h>
#include "hsr_main.h"
#include "hsr_device.h"
#include "hsr_netlink.h"
#include "hsr_framereg.h"
#include "hsr_slave.h"

static int hsr_netdev_notify(struct notifier_block *nb, unsigned long event, void *ptr) { struct net_device *dev; struct hsr_port *port, *master; struct hsr_priv *hsr; int mtu_max; int res; dev = netdev_notifier_info_to_dev(ptr); port = hsr_port_get_rtnl(dev); if (port == NULL) { if (!is_hsr_master(dev)) return NOTIFY_DONE; /* Not an HSR device */ hsr = netdev_priv(dev); port = hsr_port_get_hsr(hsr, HSR_PT_MASTER); if (port == NULL) { /* Resend of notification concerning removed device? */ return NOTIFY_DONE; } } else { hsr = port->hsr; } switch (event) { case NETDEV_UP: /* Administrative state DOWN */ case NETDEV_DOWN: /* Administrative state UP */ case NETDEV_CHANGE: /* Link (carrier) state changes */ hsr_check_carrier_and_operstate(hsr); break; case NETDEV_CHANGEADDR: if (port->type == HSR_PT_MASTER) { /* This should not happen since there's no * ndo_set_mac_address() for HSR devices - i.e. not * supported. */ break; } master = hsr_port_get_hsr(hsr, HSR_PT_MASTER); if (port->type == HSR_PT_SLAVE_A) { ether_addr_copy(master->dev->dev_addr, dev->dev_addr); call_netdevice_notifiers(NETDEV_CHANGEADDR, master->dev); } /* Make sure we recognize frames from ourselves in hsr_rcv() */ port = hsr_port_get_hsr(hsr, HSR_PT_SLAVE_B); res = hsr_create_self_node(&hsr->self_node_db, master->dev->dev_addr, port ? port->dev->dev_addr : master->dev->dev_addr); if (res) netdev_warn(master->dev, "Could not update HSR node address.\n"); break; case NETDEV_CHANGEMTU: if (port->type == HSR_PT_MASTER) break; /* Handled in ndo_change_mtu() */ mtu_max = hsr_get_max_mtu(port->hsr); master = hsr_port_get_hsr(port->hsr, HSR_PT_MASTER); master->dev->mtu = mtu_max; break; case NETDEV_UNREGISTER: hsr_del_port(port); break; case NETDEV_PRE_TYPE_CHANGE: /* HSR works only on Ethernet devices. Refuse slave to change * its type. */ return NOTIFY_BAD; } return NOTIFY_DONE; }


arvid brodinarvid brodin30899.68%685.71%
joe perchesjoe perches10.32%114.29%

struct hsr_port *hsr_port_get_hsr(struct hsr_priv *hsr, enum hsr_port_type pt) { struct hsr_port *port; hsr_for_each_port(hsr, port) if (port->type == pt) return port; return NULL; }


arvid brodinarvid brodin41100.00%1100.00%

static struct notifier_block hsr_nb = { .notifier_call = hsr_netdev_notify, /* Slave event notifications */ };
static int __init hsr_init(void) { int res; BUILD_BUG_ON(sizeof(struct hsr_tag) != HSR_HLEN); register_netdevice_notifier(&hsr_nb); res = hsr_netlink_init(); return res; }


arvid brodinarvid brodin37100.00%3100.00%

static void __exit hsr_exit(void) { unregister_netdevice_notifier(&hsr_nb); hsr_netlink_exit(); }


arvid brodinarvid brodin18100.00%2100.00%

module_init(hsr_init); module_exit(hsr_exit); MODULE_LICENSE("GPL");

Overall Contributors

arvid brodinarvid brodin46199.78%787.50%
joe perchesjoe perches10.22%112.50%
Directory: net/hsr
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