Generic network interface header. More...

Detailed Description

Generic network interface header.

Author
Hauke Petersen hauke.nosp@m..pet.nosp@m.ersen.nosp@m.@fu-.nosp@m.berli.nosp@m.n.de
Martine Lenders mlend.nosp@m.ers@.nosp@m.inf.f.nosp@m.u-be.nosp@m.rlin..nosp@m.de

Definition in file hdr.h.

#include <errno.h>
#include <string.h>
#include <stdint.h>
#include "net/gnrc/netif/internal.h"
#include "net/gnrc/pkt.h"
#include "net/gnrc/pktbuf.h"
#include "net/gnrc/netif.h"
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Go to the source code of this file.

Data Structures

struct  gnrc_netif_hdr_t
 Generic network interface header. More...
 

Macros

#define GNRC_NETIF_HDR_L2ADDR_MAX_LEN   (8)
 Maximum length of the l2 addresses of the generic interface header in bytes.
 
#define GNRC_NETIF_HDR_L2ADDR_PRINT_LEN   (GNRC_NETIF_HDR_L2ADDR_MAX_LEN * 3)
 Maximum length of the string representatiom of l2 addresses of the generic interface header in bytes.
 

Functions

static void gnrc_netif_hdr_init (gnrc_netif_hdr_t *hdr, uint8_t src_l2addr_len, uint8_t dst_l2addr_len)
 Initialize the given generic network interface header. More...
 
static size_t gnrc_netif_hdr_sizeof (const gnrc_netif_hdr_t *hdr)
 Get the size of the given generic network interface header. More...
 
static uint8_t * gnrc_netif_hdr_get_src_addr (const gnrc_netif_hdr_t *hdr)
 Get the source address from the given header. More...
 
static void gnrc_netif_hdr_set_src_addr (gnrc_netif_hdr_t *hdr, const uint8_t *addr, uint8_t addr_len)
 Set the source address in the given header. More...
 
static uint8_t * gnrc_netif_hdr_get_dst_addr (const gnrc_netif_hdr_t *hdr)
 Get the destination address from the given header. More...
 
static void gnrc_netif_hdr_set_dst_addr (gnrc_netif_hdr_t *hdr, const uint8_t *addr, uint8_t addr_len)
 Set the destination address in the given header. More...
 
static int gnrc_netif_hdr_ipv6_iid_from_src (const gnrc_netif_t *netif, const gnrc_netif_hdr_t *hdr, eui64_t *iid)
 Converts the source address of a given Generic network interface header to an IPv6 IID. More...
 
static int gnrc_netif_hdr_ipv6_iid_from_dst (const gnrc_netif_t *netif, const gnrc_netif_hdr_t *hdr, eui64_t *iid)
 Converts the destination address of a given Generic network interface header to an IPv6 IID. More...
 
gnrc_pktsnip_tgnrc_netif_hdr_build (const uint8_t *src, uint8_t src_len, const uint8_t *dst, uint8_t dst_len)
 Builds a generic network interface header for sending and adds it to the packet buffer. More...
 
static gnrc_netif_tgnrc_netif_hdr_get_netif (const gnrc_netif_hdr_t *hdr)
 Convenience function to get the corresponding interface struct for a given interface header. More...
 
static void gnrc_netif_hdr_set_netif (gnrc_netif_hdr_t *hdr, const gnrc_netif_t *netif)
 Convenience function to set the interface of an interface header, given the network interface. More...
 
void gnrc_netif_hdr_print (gnrc_netif_hdr_t *hdr)
 Outputs a generic interface header to stdout. More...
 
uint8_t gnrc_netif_hdr_get_flag (gnrc_pktsnip_t *pkt)
 Fetch the netif header flags of a gnrc packet. More...
 
int gnrc_netif_hdr_get_dstaddr (gnrc_pktsnip_t *pkt, uint8_t **pointer_to_addr)
 Extract the destination address out of a gnrc packet. More...
 
int gnrc_netif_hdr_get_srcaddr (gnrc_pktsnip_t *pkt, uint8_t **pointer_to_addr)
 Extract the source address out of a gnrc packet. More...
 

Flags for the gnrc_netif_hdr_t

#define GNRC_NETIF_HDR_FLAGS_BROADCAST   (0x80)
 Send packet broadcast. More...
 
#define GNRC_NETIF_HDR_FLAGS_MULTICAST   (0x40)
 Send packet multicast. More...
 
#define GNRC_NETIF_HDR_FLAGS_MORE_DATA   (0x10)
 More data will follow. More...