All users of genl have the same code to open a genl socket and resolve
the family for their specific protocol. Introduce a helper to initialize
the handle, and use it in all the genl code.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
There have been several instances where response from kernel
has overrun the stack buffer from the caller. Avoid future problems
by passing a size argument.
Also drop the unused peer and group arguments to rtnl_talk.
Both macros are used together, so better to have
single define. Update all requests in ipl2tp.c to use the
new macro.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Create libgenl.h and libgenl.c. They will contain
common code for GENL users such as ipl2tp, tcp_metrics, etc.
Somewhat simplified by Stephen Hemminger
Signed-off-by: Julian Anastasov <ja@ssi.bg>
