netif/conf.h

Configuration macros for Network interface API.

GNRC_NETIF_NUMOF

Maximum number of network interfaces.

(1)

Note

Intentionally not calling it GNRC_NETIF_NUMOF to not require rewrites throughout the stack.

GNRC_NETIF_PRIO

Default priority for network interface threads.

(THREAD_PRIORITY_MAIN - 5)

GNRC_NETIF_RPL_ADDR

Number of multicast addresses needed for RPL.

(0)

Note

Used for calculation of netif/conf.h::GNRC_NETIF_IPV6_GROUPS_NUMOF

GNRC_NETIF_IPV6_RTR_ADDR

Number of multicast addresses needed for a IPv6 router.

(0)

Note

Used for calculation of netif/conf.h::GNRC_NETIF_IPV6_GROUPS_NUMOF

GNRC_NETIF_IPV6_ADDRS_NUMOF

Maximum number of unicast and anycast addresses per interface.

(2)

Note

If you change this, please make sure that netif/conf.h::GNRC_NETIF_IPV6_GROUPS_NUMOF is also large enough to fit the addresses’ solicited nodes multicast addresses.

Default: 2 (1 link-local + 1 global address)

GNRC_NETIF_IPV6_GROUPS_NUMOF

Maximum number of multicast groups per interface.

(GNRC_NETIF_IPV6_ADDRS_NUMOF + \
                                        GNRC_NETIF_RPL_ADDR + \
                                        GNRC_NETIF_IPV6_RTR_ADDR + 1)

Default: 3 (all-nodes + solicited-nodes of link-local and global unicast address) + netif/conf.h::GNRC_NETIF_RPL_ADDR + netif/conf.h::GNRC_NETIF_IPV6_RTR_ADDR

GNRC_NETIF_L2ADDR_MAXLEN

Maximum length of the link-layer address.

(GNRC_IPV6_NIB_L2ADDR_MAX_LEN)

The value for the maximum length of a link-layer address is dependent on the netdev adapters compiled in:

• Setting it via CFLAGS has the most precedence.
• The default is 8.
• 1, if only CC1100/CC1101 radio driver devices are compiled in.
• ethernet/hdr.h::ETHERNET_ADDR_LEN, if additionally (or only) ethernet devices are compiled in.
• sys/include/net/ieee802154.h::IEEE802154_LONG_ADDRESS_LEN, if additionally (or only) IEEE802.15.4 devices are compiled in.

Note

Implementers note: From longest to shortest extend, if new link-layer address types are included

GNRC_NETIF_DEFAULT_HL

default hop limit

(64U)