ca8b00a3cc
Instead of always allocating both IPv6 and IPv4 address information to every network interface, allow more fine grained address configuration. So it is possible to have IPv6 or IPv4 only network interfaces. This commit introduces two new config options: CONFIG_NET_IF_MAX_IPV4_COUNT and CONFIG_NET_IF_MAX_IPV6_COUNT which tell how many IP address information structs are allocated statically. At runtime when network interface is setup, it is then possible to attach this IP address info struct to a specific network interface. This can save considerable amount of memory as the IP address information struct can be quite large (depends on how many IP addresses user configures in the system). Note that the value of CONFIG_NET_IF_MAX_IPV4_COUNT and CONFIG_NET_IF_MAX_IPV6_COUNT should reflect the estimated number of network interfaces in the system. So if if CONFIG_NET_IF_MAX_IPV6_COUNT is set to 1 and there are two network interfaces that need IPv6 addresses, then the system will not be able to setup IPv6 addresses to the second network interface in this case. This scenario might be just fine if the second network interface is IPv4 only. The net_if.c will print a warning during startup if mismatch about the counts and the actual number of network interface is detected. Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> |
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| .. | ||
| ip | ||
| lib | ||
| buf.c | ||
| CMakeLists.txt | ||
| hostname.c | ||
| Kconfig | ||
| Kconfig.hostname | ||
| TODO | ||