From: Florian Westphal
Date: Mon, 21 Nov 2016 10:08:37 +0100
> We need to zero out the private data area when application switches
> connection to different algorithm (TCP_CONGESTION setsockopt).
>
> When congestion ops get assigned at connect time everything is already
> zeroed because sk_alloc
We need to zero out the private data area when application switches
connection to different algorithm (TCP_CONGESTION setsockopt).
When congestion ops get assigned at connect time everything is already
zeroed because sk_alloc uses GFP_ZERO flag. But in the setsockopt case
this contains whatever p