57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#ifndef _NET_IF_H
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#define _NET_IF_H 1
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// https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/net_if.h.html
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#include <sys/cdefs.h>
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#include <sys/socket.h>
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#define IF_NAMESIZE 16
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__BEGIN_DECLS
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struct if_nameindex
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{
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unsigned if_index; /* Numeric index of the interface. */
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char* if_name; /* Null-terminated name of the interface. */
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};
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struct ifreq
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{
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union {
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char ifrn_name[IF_NAMESIZE];
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} ifr_ifrn;
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union {
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struct sockaddr ifru_addr;
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struct sockaddr ifru_netmask;
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struct sockaddr ifru_gwaddr;
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struct sockaddr ifru_hwaddr;
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unsigned char __min_storage[sizeof(struct sockaddr) + 6];
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} ifr_ifru;
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};
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#define ifr_name ifr_ifrn.ifrn_name
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#define ifr_addr ifr_ifru.ifru_addr
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#define ifr_netmask ifr_ifru.ifru_addrnetmask
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#define ifr_gwaddr ifr_ifru.ifru_addrgwaddr
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#define ifr_hwaddr ifr_ifru.ifru_addrhwaddr
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#define SIOCGIFADDR 1 /* Get interface address */
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#define SIOCSIFADDR 2 /* Set interface address */
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#define SIOCGIFNETMASK 3 /* Get network mask */
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#define SIOCSIFNETMASK 4 /* Set network mask */
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#define SIOCGIFGWADDR 5 /* Get gateway address */
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#define SIOCSIFGWADDR 6 /* Set gateway address */
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#define SIOCGIFHWADDR 7 /* Get hardware address */
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#define SIOCGIFNAME 8 /* Get interface name */
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void if_freenameindex(struct if_nameindex* ptr);
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char* if_indextoname(unsigned ifindex, char* ifname);
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struct if_nameindex* if_nameindex(void);
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unsigned if_nametoindex(const char* ifname);
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__END_DECLS
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#endif
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