/**************************************************************************** * include/net/if.h * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ #ifndef __INCLUDE_NET_IF_H #define __INCLUDE_NET_IF_H /**************************************************************************** * Included Files ****************************************************************************/ #include #include /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* If CONFIG_NETDEV_IFINDEX is enabled then there is limit to the number of * devices that can be registered due to the nature of some static data. */ #define MAX_IFINDEX 32 /* Sizing parameters */ #define IFNAMSIZ 16 /* Older naming standard */ #define IF_NAMESIZE 16 /* Newer naming standard */ #define IFHWADDRLEN 6 /* Interface flag bits */ #define IFF_DOWN (1 << 0) /* Interface is down */ #define IFF_UP (1 << 1) /* Interface is up */ #define IFF_RUNNING (1 << 2) /* Carrier is available */ #define IFF_IPv6 (1 << 3) /* Configured for IPv6 packet (vs ARP or IPv4) */ #define IFF_LOOPBACK (1 << 5) /* Is a loopback net */ #define IFF_POINTOPOINT (1 << 6) /* Is point-to-point link */ #define IFF_NOARP (1 << 7) /* ARP is not required for this packet */ #define IFF_NAT (1 << 8) /* NAT is enabled for this interface */ #define IFF_SLAVE (1 << 11) /* Slave of a load balancer. */ #define IFF_MULTICAST (1 << 12) /* Supports multicast. */ #define IFF_BROADCAST (1 << 13) /* Broadcast address valid. */ #define IFF_DYNAMIC (1 << 15) /* Dialup device with changing addresses. */ /* Interface flag helpers */ #define IFF_SET_UP(f) do { (f) |= IFF_UP; } while (0) #define IFF_SET_RUNNING(f) do { (f) |= IFF_RUNNING; } while (0) #define IFF_SET_NOARP(f) do { (f) |= IFF_NOARP; } while (0) #define IFF_SET_NAT(f) do { (f) |= IFF_NAT; } while (0) #define IFF_SET_LOOPBACK(f) do { (f) |= IFF_LOOPBACK; } while (0) #define IFF_SET_POINTOPOINT(f) do { (f) |= IFF_POINTOPOINT; } while (0) #define IFF_SET_MULTICAST(f) do { (f) |= IFF_MULTICAST; } while (0) #define IFF_SET_BROADCAST(f) do { (f) |= IFF_BROADCAST; } while (0) #define IFF_SET_SLAVE(f) do { (f) |= IFF_SLAVE; } while (0) #define IFF_SET_DYNAMIC(f) do { (f) |= IFF_DYNAMIC; } while (0) #define IFF_CLR_UP(f) do { (f) &= ~IFF_UP; } while (0) #define IFF_CLR_RUNNING(f) do { (f) &= ~IFF_RUNNING; } while (0) #define IFF_CLR_NOARP(f) do { (f) &= ~IFF_NOARP; } while (0) #define IFF_CLR_NAT(f) do { (f) &= ~IFF_NAT; } while (0) #define IFF_CLR_LOOPBACK(f) do { (f) &= ~IFF_LOOPBACK; } while (0) #define IFF_CLR_POINTOPOINT(f) do { (f) &= ~IFF_POINTOPOINT; } while (0) #define IFF_CLR_MULTICAST(f) do { (f) &= ~IFF_MULTICAST; } while (0) #define IFF_CLR_BROADCAST(f) do { (f) &= ~IFF_BROADCAST; } while (0) #define IFF_CLR_SLAVE(f) do { (f) &= ~IFF_SLAVE; } while (0) #define IFF_CLR_DYNAMIC(f) do { (f) &= ~IFF_DYNAMIC; } while (0) #define IFF_IS_UP(f) (((f) & IFF_UP) != 0) #define IFF_IS_RUNNING(f) (((f) & IFF_RUNNING) != 0) #define IFF_IS_NOARP(f) (((f) & IFF_NOARP) != 0) #define IFF_IS_NAT(f) (((f) & IFF_NAT) != 0) #define IFF_IS_LOOPBACK(f) (((f) & IFF_LOOPBACK) != 0) #define IFF_IS_POINTOPOINT(f) (((f) & IFF_POINTOPOINT) != 0) #define IFF_IS_MULTICAST(f) (((f) & IFF_MULTICAST) != 0) #define IFF_IS_BROADCAST(f) (((f) & IFF_BROADCAST) != 0) #define IFF_IS_SLAVE(f) (((f) & IFF_SLAVE) != 0) #define IFF_IS_DYNAMIC(f) (((f) & IFF_DYNAMIC) != 0) /* We only need to manage the IPv6 bit if both IPv6 and IPv4 are supported. * Otherwise, we can save a few bytes by ignoring it. */ #if defined(CONFIG_NET_IPv4) && defined(CONFIG_NET_IPv6) # define IFF_SET_IPv6(f) do { (f) |= IFF_IPv6; } while (0) # define IFF_CLR_IPv6(f) do { (f) &= ~IFF_IPv6; } while (0) # define IFF_IS_IPv6(f) (((f) & IFF_IPv6) != 0) # define IFF_SET_IPv4(f) IFF_CLR_IPv6(f) # define IFF_CLR_IPv4(f) IFF_SET_IPv6(f) # define IFF_IS_IPv4(f) (!IFF_IS_IPv6(f)) #elif defined(CONFIG_NET_IPv6) # define IFF_SET_IPv6(f) # define IFF_CLR_IPv6(f) # define IFF_IS_IPv6(f) (1) # define IFF_SET_IPv4(f) # define IFF_CLR_IPv4(f) # define IFF_IS_IPv4(f) (0) #else /* if defined(CONFIG_NET_IPv4) */ # define IFF_SET_IPv6(f) # define IFF_CLR_IPv6(f) # define IFF_IS_IPv6(f) (0) # define IFF_SET_IPv4(f) # define IFF_CLR_IPv4(f) # define IFF_IS_IPv4(f) (1) #endif /**************************************************************************** * Public Type Definitions ****************************************************************************/ struct if_nameindex { unsigned int if_index; /* 1, 2, ... */ FAR char *if_name; /* null terminated name: "eth0", ... */ }; /* Structure passed with the SIOCMIINOTIFY ioctl command to enable * notification of of PHY state changes. */ struct mii_ioctl_notify_s { pid_t pid; /* PID of the task to receive the signal. Zero means "this task" */ struct sigevent event; /* Describe the way a task is to be notified */ }; /* Structure passed to read from or write to the MII/PHY management * interface via the SIOCxMIIREG ioctl commands. */ struct mii_ioctl_data_s { uint16_t phy_id; /* PHY device address */ uint16_t reg_num; /* PHY register address */ uint16_t val_in; /* PHY input data */ uint16_t val_out; /* PHY output data */ }; /* Structure passed to get or set the CAN bitrate * SIOCxCANBITRATE ioctl commands. */ struct can_ioctl_data_s { uint16_t arbi_bitrate; /* Classic CAN / Arbitration phase bitrate kbit/s */ uint16_t arbi_samplep; /* Classic CAN / Arbitration phase input % */ uint16_t data_bitrate; /* Data phase bitrate kbit/s */ uint16_t data_samplep; /* Data phase sample point % */ }; /* Structure passed to add or remove hardware-level CAN ID filters * SIOCxCANSTDFILTER / SIOCxCANEXTFILTER ioctl commands. */ struct can_ioctl_filter_s { uint32_t fid1; /* 11- or 29-bit ID (context dependent). For dual match or * for the lower address in a range of addresses */ uint32_t fid2; /* 11- or 29-bit ID. For dual match, address mask or for * upper address in address range */ uint8_t ftype; /* See CAN_FILTER_* definitions */ uint8_t fprio; /* See CAN_MSGPRIO_* definitions */ }; /* There are two forms of the I/F request structure. * One for IPv6 and one for IPv4. * Notice that they are (and must be) cast compatible and really different * only in the size of the structure allocation. * * This is the I/F request that should be used with IPv6. */ struct lifreq { char lifr_name[IFNAMSIZ]; /* Network device name (e.g. "eth0") */ int16_t lifr_ifindex; /* Interface index */ union { struct sockaddr_storage lifru_addr; /* IP Address */ struct sockaddr_storage lifru_dstaddr; /* P-to-P Address */ struct sockaddr_storage lifru_broadaddr; /* Broadcast address */ struct sockaddr_storage lifru_netmask; /* Netmask */ struct sockaddr lifru_hwaddr; /* MAC address */ int lifru_count; /* Number of devices */ int lifru_mtu; /* MTU size */ uint32_t lifru_flags; /* Interface flags */ struct mii_ioctl_notify_s llfru_mii_notify; /* PHY event notification */ struct mii_ioctl_data_s lifru_mii_data; /* MII request data */ struct can_ioctl_data_s lifru_can_data; /* CAN bitrate request data */ struct can_ioctl_filter_s lifru_can_filter; /* CAN filter request data */ } lifr_ifru; }; #define lifr_addr lifr_ifru.lifru_addr /* IP address */ #define lifr_dstaddr lifr_ifru.lifru_dstaddr /* P-to-P Address */ #define lifr_broadaddr lifr_ifru.lifru_broadaddr /* Broadcast address */ #define lifr_netmask lifr_ifru.lifru_netmask /* Interface net mask */ #define lifr_hwaddr lifr_ifru.lifru_hwaddr /* MAC address */ #define lifr_mtu lifr_ifru.lifru_mtu /* MTU */ #define lifr_count lifr_ifru.lifru_count /* Number of devices */ #define lifr_flags lifr_ifru.lifru_flags /* interface flags */ #define lifr_mii_notify_pid lifr_ifru.llfru_mii_notify.pid /* PID to be notified */ #define lifr_mii_notify_event lifr_ifru.llfru_mii_notify.event /* Describes notification */ #define lifr_mii_phy_id lifr_ifru.lifru_mii_data.phy_id /* PHY device address */ #define lifr_mii_reg_num lifr_ifru.lifru_mii_data.reg_num /* PHY register address */ #define lifr_mii_val_in lifr_ifru.lifru_mii_data.val_in /* PHY input data */ #define lifr_mii_val_out lifr_ifru.lifru_mii_data.val_out /* PHY output data */ /* Used only with the SIOCGLIFCONF IOCTL command */ struct lifconf { size_t lifc_len; /* Size of buffer */ union { FAR char *lifcu_buf; /* Buffer address */ FAR struct lifreq *lifcu_req; /* Array of ifreq structures */ } lifc_ifcu; }; #define lifc_buf lifc_ifcu.lifcu_buf /* Buffer address */ #define lifc_req lifc_ifcu.lifcu_req /* Array of ifreq structures */ /* This is the I/F request that should be used with IPv4. */ struct ifreq { char ifr_name[IFNAMSIZ]; /* Network device name (e.g. "eth0") */ int16_t ifr_ifindex; /* Interface index */ union { struct sockaddr ifru_addr; /* IP Address */ struct sockaddr ifru_dstaddr; /* P-to-P Address */ struct sockaddr ifru_broadaddr; /* Broadcast address */ struct sockaddr ifru_netmask; /* Netmask */ struct sockaddr ifru_hwaddr; /* MAC address */ int ifru_count; /* Number of devices */ int ifru_mtu; /* MTU size */ uint32_t ifru_flags; /* Interface flags */ struct mii_ioctl_notify_s ifru_mii_notify; /* PHY event notification */ struct mii_ioctl_data_s ifru_mii_data; /* MII request data */ struct can_ioctl_data_s ifru_can_data; /* CAN bitrate request data */ struct can_ioctl_filter_s ifru_can_filter; /* CAN filter request data */ } ifr_ifru; }; #define ifr_addr ifr_ifru.ifru_addr /* IP address */ #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* P-to-P Address */ #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* Broadcast address */ #define ifr_netmask ifr_ifru.ifru_netmask /* Interface net mask */ #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */ #define ifr_mtu ifr_ifru.ifru_mtu /* MTU */ #define ifr_count ifr_ifru.ifru_count /* Number of devices */ #define ifr_flags ifr_ifru.ifru_flags /* interface flags */ #define ifr_mii_notify_pid ifr_ifru.ifru_mii_notify.pid /* PID to be notified */ #define ifr_mii_notify_event ifr_ifru.ifru_mii_notify.event /* Describes notification */ #define ifr_mii_phy_id ifr_ifru.ifru_mii_data.phy_id /* PHY device address */ #define ifr_mii_reg_num ifr_ifru.ifru_mii_data.reg_num /* PHY register address */ #define ifr_mii_val_in ifr_ifru.ifru_mii_data.val_in /* PHY input data */ #define ifr_mii_val_out ifr_ifru.ifru_mii_data.val_out /* PHY output data */ /* Used only with the SIOCGIFCONF IOCTL command */ struct ifconf { size_t ifc_len; /* Size of buffer */ union { FAR char *ifcu_buf; /* Buffer address */ FAR struct ifreq *ifcu_req; /* Array of ifreq structures */ } ifc_ifcu; }; #define ifc_buf ifc_ifcu.ifcu_buf /* Buffer address */ #define ifc_req ifc_ifcu.ifcu_req /* Array of ifreq structures */ /**************************************************************************** * Public Function Prototypes ****************************************************************************/ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /**************************************************************************** * Name: if_nametoindex * * Description: * The if_nametoindex() function returns the interface index corresponding * to name ifname. * * Input Parameters: * ifname - The interface name * * Returned Value: * The corresponding index if ifname is the name of an interface; * otherwise, zero. * ****************************************************************************/ unsigned int if_nametoindex(FAR const char *ifname); /**************************************************************************** * Name: if_indextoname * * Description: * The if_indextoname() function maps an interface index to its * corresponding name. * * Input Parameters: * ifname - Points to a buffer of at least IF_NAMESIZE bytes. * if_indextoname() will place in this buffer the name * of the interface with index ifindex. * * Returned Value: * If ifindex is an interface index, then the function will return the * value supplied by ifname. * Otherwise, the function returns a NULL pointer and sets errno to * indicate the error. * ****************************************************************************/ FAR char *if_indextoname(unsigned int ifindex, FAR char *ifname); /**************************************************************************** * Name: if_nameindex * * Description: * The if_nameindex() function returns an array of if_nameindex structures, * each containing information about one of the network interfaces on the * local system. The if_nameindex structure contains at least the following * entries: * unsigned int if_index; * FAR char *if_name; * The if_index field contains the interface index. The if_name field * points to the null-terminated interface name. The end of the array * is indicated by entry with if_index set to zero and if_name set to NULL. * * Input Parameters: * None * * Returned Value: * On success, if_nameindex() returns pointer to the array; on error, NULL * is returned, and errno is set to indicate the error. * ****************************************************************************/ FAR struct if_nameindex *if_nameindex(void); /**************************************************************************** * Name: if_freenameindex * * Description: * The if_freenameindex() function free the data structure returned by * if_nameindex(). * * Input Parameters: * ifn - The data structure to free * * Returned Value: * None * ****************************************************************************/ void if_freenameindex(FAR struct if_nameindex *ifn); #undef EXTERN #ifdef __cplusplus } #endif #endif /* __INCLUDE_NET_IF_H */