On 07/31/2017 01:55 AM, Daniel Borkmann wrote:
> On 07/30/2017 03:28 PM, Levin, Alexander (Sasha Levin) wrote:
>> On Mon, Jul 17, 2017 at 09:30:02AM -0700, John Fastabend wrote:
>>> @@ -341,9 +368,11 @@ static int dev_map_update_elem(struct bpf_map *map,
>>> void *key, void *value,
>>> * Reme
On 07/30/2017 03:28 PM, Levin, Alexander (Sasha Levin) wrote:
On Mon, Jul 17, 2017 at 09:30:02AM -0700, John Fastabend wrote:
@@ -341,9 +368,11 @@ static int dev_map_update_elem(struct bpf_map *map, void
*key, void *value,
* Remembering the driver side flush operation will happen befor
On Mon, Jul 17, 2017 at 09:30:02AM -0700, John Fastabend wrote:
>@@ -341,9 +368,11 @@ static int dev_map_update_elem(struct bpf_map *map, void
>*key, void *value,
>* Remembering the driver side flush operation will happen before the
>* net device is removed.
>*/
>+ mut
The BPF map devmap holds a refcnt on the net_device structure when
it is in the map. We need to do this to ensure on driver unload we
don't lose a dev reference.
However, its not very convenient to have to manually unload the map
when destroying a net device so add notifier handlers to do the clea
