Re: [PATCH v2] ipv4/raw: support binding to nonlocal addresses

[David Ahern]

On 11/2/21 8:19 AM, Riccardo Paolo Bestetti wrote:
> Add support to inet v4 raw sockets for binding to nonlocal addresses
> through the IP_FREEBIND and IP_TRANSPARENT socket options, as well as
> the ipv4.ip_nonlocal_bind kernel parameter.
> 
> Add helper function to inet_sock.h to check for bind address validity on
> the base of the address type and whether nonlocal address are enabled
> for the socket via any of the sockopts/sysctl, deduplicating checks in
> ipv4/ping.c, ipv4/af_inet.c, ipv6/af_inet6.c (for mapped v4->v6
> addresses), and ipv4/raw.c.
> 
> Add test cases with IP[V6]_FREEBIND verifying that both v4 and v6 raw
> sockets support binding to nonlocal addresses after the change. Add
> necessary support for the test cases to nettest.
> 
> Signed-off-by: Riccardo Paolo Bestetti <pbl@xxxxxxxxx>
> ---

Reviewed-by: David Ahern <dsahern@xxxxxxxxxx>