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* mctp: Pass flow data & flow release events to driversJeremy Kerr2021-10-291-0/+16
| | | | | | | | | | | | Now that we have an extension for MCTP data in skbs, populate the flow when a key has been created for the packet, and add a device driver operation to inform of flow destruction. Includes a fix for a warning with test builds: Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* mctp: Add refcounts to mctp_devJeremy Kerr2021-09-291-0/+5
| | | | | | | | | | | | | | | | | | | 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>
* mctp: Remove the repeated declarationShaokun Zhang2021-08-251-1/+0
| | | | | | | | | | | | Function 'mctp_dev_get_rtnl' is declared twice, so remove the repeated declaration. Cc: Jeremy Kerr <jk@codeconstruct.com.au> Cc: Matt Johnston <matt@codeconstruct.com.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mctp: Add neighbour implementationMatt Johnston2021-07-291-0/+1
| | | | | | | | Add an initial neighbour table implementation, to be used in the route output path. Signed-off-by: Matt Johnston <matt@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* mctp: Add device handling and netlink interfaceJeremy Kerr2021-07-291-0/+35
This change adds the infrastructure for managing MCTP netdevices; we add a pointer to the AF_MCTP-specific data to struct netdevice, and hook up the rtnetlink operations for adding and removing addresses. Includes changes from Matt Johnston <matt@codeconstruct.com.au>. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>