mctp: locking, lifetime and validity changes for sk_keys

Browse source

We will want to invalidate sk_keys in a future change, which will
require a boolean flag to mark invalidated items in the socket & net
namespace lists. We'll also need to take a reference to keys, held over
non-atomic contexts, so we need a refcount on keys also.

This change adds a validity flag (currently always true) and refcount to
struct mctp_sk_key.  With a refcount on the keys, using RCU no longer
makes much sense; we have exact indications on the lifetime of keys. So,
we also change the RCU list traversal to a locked implementation.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Jeremy Kerr 2021-09-29 15:26:07 +08:00 • committed by David S. Miller

parent 1f6c77ac9e

commit 73c618456d

3 changed files with 125 additions and 53 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

46

include/net/mctp.h

View file

14

net/mctp/af_mctp.c

View file

118

net/mctp/route.c

View file