[WIP] net/ip: Consolidate RECVERR-vs-sk_err handling
Linux's current userspace semantics for setting sk_err on datagram
sockets is complex, and it's implemented separately, in different ways,
in several files.
Consolidate the logic into a new helper and use it for all IP datagram
socket types.
This is IMO an improvement to the comprehensibility of the code, and
it also makes implementing IP_RECVERR_QUIET much more straightforward.
Ideally the ip_icmp_error()/ipv6_icmp_error() call would move to the
helper as well, but it would get messy due to the ability to compile
IPv6 as a module.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
5 files changed
