linux/net/mctp
Jeremy Kerr 43f55f23f7 mctp: Add refcounts to mctp_dev
Currently, we tie the struct mctp_dev lifetime to the underlying struct
net_device, and hold/put that device as a proxy for a separate mctp_dev
refcount. This works because we're not holding any references to the
mctp_dev that are different from the netdev lifetime.

In a future change we'll break that assumption though, as we'll need to
hold mctp_dev references in a workqueue, which might live past the
netdev unregister notification.

In order to support that, this change introduces a refcount on the
mctp_dev, currently taken by the net_device->mctp_ptr reference, and
released on netdev unregister events. We can then use this for future
references that might outlast the net device.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-09-29 11:00:11 +01:00
..
af_mctp.c mctp: locking, lifetime and validity changes for sk_keys 2021-09-29 11:00:11 +01:00
device.c mctp: Add refcounts to mctp_dev 2021-09-29 11:00:11 +01:00
Kconfig
Makefile mctp: Add neighbour implementation 2021-07-29 15:06:50 +01:00
neigh.c mctp: Add refcounts to mctp_dev 2021-09-29 11:00:11 +01:00
route.c mctp: Add refcounts to mctp_dev 2021-09-29 11:00:11 +01:00