Yes, genlmsg_end changes nlmsg_len field dependent on skb->tail.
After allocation in reset_per_cpu_data skb->tail is modified in
trace_drop_common via __nla_reserve_nohdr.
Best place for setting nlmsg_len to its final value is after being
swapped out in reset_per_cpu_data.
Neil Horman writes:
From: Neil Horman
Date: Tue, 3 Jan 2017 11:04:43 -0500
> On Tue, Jan 03, 2017 at 09:54:19AM -0500, David Miller wrote:
>> From: Reiter Wolfgang
>> Date: Tue, 3 Jan 2017 01:39:10 +0100
>>
>> > Final nlmsg_len field update must reflect inserted net_dm_drop_point
>> > data.
>> >
>> > This patch
On Tue, Jan 03, 2017 at 09:54:19AM -0500, David Miller wrote:
> From: Reiter Wolfgang
> Date: Tue, 3 Jan 2017 01:39:10 +0100
>
> > Final nlmsg_len field update must reflect inserted net_dm_drop_point
> > data.
> >
> > This patch depends on previous patch:
> > "drop_monitor: add missing call to
From: Reiter Wolfgang
Date: Tue, 3 Jan 2017 01:39:10 +0100
> Final nlmsg_len field update must reflect inserted net_dm_drop_point
> data.
>
> This patch depends on previous patch:
> "drop_monitor: add missing call to genlmsg_end"
>
> Signed-off-by: Reiter Wolfgang
I don't understand why the
On Tue, Jan 03, 2017 at 01:39:10AM +0100, Reiter Wolfgang wrote:
> Final nlmsg_len field update must reflect inserted net_dm_drop_point
> data.
>
> This patch depends on previous patch:
> "drop_monitor: add missing call to genlmsg_end"
>
> Signed-off-by: Reiter Wolfgang
> ---
> net/core/drop_mo
Final nlmsg_len field update must reflect inserted net_dm_drop_point
data.
This patch depends on previous patch:
"drop_monitor: add missing call to genlmsg_end"
Signed-off-by: Reiter Wolfgang
---
net/core/drop_monitor.c | 8 +++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/
From: Reiter Wolfgang
Date: Tue, 3 Jan 2017 00:34:10 +0100
> Final nlmsg_len field update must reflect inserted net_dm_drop_point
> data.
>
> This patch depends on previous patch:
> "drop_monitor: add missing call to genlmsg_end"
>
> Signed-off-by: Reiter Wolfgang
Several coding style errors
Final nlmsg_len field update must reflect inserted net_dm_drop_point
data.
This patch depends on previous patch:
"drop_monitor: add missing call to genlmsg_end"
Signed-off-by: Reiter Wolfgang
---
net/core/drop_monitor.c | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/n
