netdev - Re: [PATCH bpf-next] bpf: NULL pointer check is not needed in BPF_CGROUP_RUN_PROG_INET

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Date:   Fri, 23 Feb 2018 12:44:55 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     laoar.shao@...il.com
Cc:     dsa@...ulusnetworks.com, ast@...nel.org, daniel@...earbox.net,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH bpf-next] bpf: NULL pointer check is not needed in
 BPF_CGROUP_RUN_PROG_INET_SOCK

From: Yafang Shao <laoar.shao@...il.com>
Date: Fri, 23 Feb 2018 14:58:41 +0800

> sk is already allocated in inet_create/inet6_create, hence when
> BPF_CGROUP_RUN_PROG_INET_SOCK is executed sk will never be NULL.
> 
> The logic is as bellow,
> 	sk = sk_alloc();
> 	if (!sk)
> 		goto out;
> 	BPF_CGROUP_RUN_PROG_INET_SOCK(sk);
> 
> Signed-off-by: Yafang Shao <laoar.shao@...il.com>

Acked-by: David S. Miller <davem@...emloft.net>