1/*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013-2017 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29#ifndef _LINUX_NETDEVICE_H_ 30#define _LINUX_NETDEVICE_H_ 31 32#include <linux/types.h> 33 34#include <sys/socket.h> 35 36#include <net/if_types.h> 37#include <net/if.h> 38#include <net/if_var.h> 39#include <net/if_dl.h> 40 41#include <linux/list.h> 42#include <linux/completion.h> 43#include <linux/device.h> 44#include <linux/workqueue.h> 45#include <linux/net.h> 46#include <linux/notifier.h> 47 48#ifdef VIMAGE 49#define init_net *vnet0 50#else 51#define init_net *((struct vnet *)0) 52#endif 53 54#define MAX_ADDR_LEN 20 55 56#define net_device ifnet 57 58static inline struct ifnet * 59dev_get_by_index(struct vnet *vnet, int if_index) 60{ 61 struct ifnet *retval; 62 63 CURVNET_SET(vnet); 64 retval = ifnet_byindex_ref(if_index); 65 CURVNET_RESTORE(); 66 67 return (retval); 68} 69 70#define dev_hold(d) if_ref(d) 71#define dev_put(d) if_rele(d) 72#define dev_net(d) ((d)->if_vnet) 73 74#define net_eq(a,b) ((a) == (b)) 75 76#define netif_running(dev) !!((dev)->if_drv_flags & IFF_DRV_RUNNING) 77#define netif_oper_up(dev) !!((dev)->if_flags & IFF_UP) 78#define netif_carrier_ok(dev) netif_running(dev) 79 80static inline void * 81netdev_priv(const struct net_device *dev) 82{ 83 return (dev->if_softc); 84} 85 86static inline void 87_handle_ifnet_link_event(void *arg, struct ifnet *ifp, int linkstate) 88{ 89 struct notifier_block *nb; 90 91 nb = arg; 92 if (linkstate == LINK_STATE_UP) 93 nb->notifier_call(nb, NETDEV_UP, ifp); 94 else 95 nb->notifier_call(nb, NETDEV_DOWN, ifp); 96} 97 98static inline void 99_handle_ifnet_arrival_event(void *arg, struct ifnet *ifp) 100{ 101 struct notifier_block *nb; 102 103 nb = arg; 104 nb->notifier_call(nb, NETDEV_REGISTER, ifp); 105} 106 107static inline void 108_handle_ifnet_departure_event(void *arg, struct ifnet *ifp) 109{ 110 struct notifier_block *nb; 111 112 nb = arg; 113 nb->notifier_call(nb, NETDEV_UNREGISTER, ifp); 114} 115 116static inline void 117_handle_iflladdr_event(void *arg, struct ifnet *ifp) 118{ 119 struct notifier_block *nb; 120 121 nb = arg; 122 nb->notifier_call(nb, NETDEV_CHANGEADDR, ifp); 123} 124 125static inline void 126_handle_ifaddr_event(void *arg, struct ifnet *ifp) 127{ 128 struct notifier_block *nb; 129 130 nb = arg; 131 nb->notifier_call(nb, NETDEV_CHANGEIFADDR, ifp); 132} 133 134static inline int 135register_netdevice_notifier(struct notifier_block *nb) 136{ 137 138 nb->tags[NETDEV_UP] = EVENTHANDLER_REGISTER( 139 ifnet_link_event, _handle_ifnet_link_event, nb, 0); 140 nb->tags[NETDEV_REGISTER] = EVENTHANDLER_REGISTER( 141 ifnet_arrival_event, _handle_ifnet_arrival_event, nb, 0); 142 nb->tags[NETDEV_UNREGISTER] = EVENTHANDLER_REGISTER( 143 ifnet_departure_event, _handle_ifnet_departure_event, nb, 0); 144 nb->tags[NETDEV_CHANGEADDR] = EVENTHANDLER_REGISTER( 145 iflladdr_event, _handle_iflladdr_event, nb, 0); 146 147 return (0); 148} 149 150static inline int 151register_inetaddr_notifier(struct notifier_block *nb) 152{ 153 154 nb->tags[NETDEV_CHANGEIFADDR] = EVENTHANDLER_REGISTER( 155 ifaddr_event, _handle_ifaddr_event, nb, 0); 156 return (0); 157} 158 159static inline int 160unregister_netdevice_notifier(struct notifier_block *nb) 161{ 162 163 EVENTHANDLER_DEREGISTER(ifnet_link_event, nb->tags[NETDEV_UP]); 164 EVENTHANDLER_DEREGISTER(ifnet_arrival_event, nb->tags[NETDEV_REGISTER]); 165 EVENTHANDLER_DEREGISTER(ifnet_departure_event, 166 nb->tags[NETDEV_UNREGISTER]); 167 EVENTHANDLER_DEREGISTER(iflladdr_event, 168 nb->tags[NETDEV_CHANGEADDR]); 169 170 return (0); 171} 172 173static inline int 174unregister_inetaddr_notifier(struct notifier_block *nb) 175{ 176 177 EVENTHANDLER_DEREGISTER(ifaddr_event, 178 nb->tags[NETDEV_CHANGEIFADDR]); 179 180 return (0); 181} 182 183 184#define rtnl_lock() 185#define rtnl_unlock() 186 187static inline int 188dev_mc_delete(struct net_device *dev, void *addr, int alen, int all) 189{ 190 struct sockaddr_dl sdl; 191 192 if (alen > sizeof(sdl.sdl_data)) 193 return (-EINVAL); 194 memset(&sdl, 0, sizeof(sdl)); 195 sdl.sdl_len = sizeof(sdl); 196 sdl.sdl_family = AF_LINK; 197 sdl.sdl_alen = alen; 198 memcpy(&sdl.sdl_data, addr, alen); 199 200 return -if_delmulti(dev, (struct sockaddr *)&sdl); 201} 202 203static inline int 204dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly) 205{ 206 struct sockaddr_dl sdl; 207 208 if (alen > sizeof(sdl.sdl_data)) 209 return (-EINVAL); 210 memset(&sdl, 0, sizeof(sdl)); 211 sdl.sdl_len = sizeof(sdl); 212 sdl.sdl_family = AF_LINK; 213 sdl.sdl_alen = alen; 214 memcpy(&sdl.sdl_data, addr, alen); 215 216 return -if_addmulti(dev, (struct sockaddr *)&sdl, NULL); 217} 218 219#endif /* _LINUX_NETDEVICE_H_ */ 220