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From: Jamal Hadi Salim <jhs@mojatatu.com>
To: Joe Stringer <joe@wand.net.nz>, bpf@vger.kernel.org
Cc: netdev@vger.kernel.org, daniel@iogearbox.net, ast@kernel.org,
	eric.dumazet@gmail.com, lmb@cloudflare.com, kafai@fb.com
Subject: Re: [PATCHv3 bpf-next 3/5] bpf: Don't refcount LISTEN sockets in sk_assign()
Date: Fri, 27 Mar 2020 10:26:15 -0400
Message-ID: <daf11ebd-e578-10d4-6e4a-00bb396258cf@mojatatu.com> (raw)
In-Reply-To: <20200327042556.11560-4-joe@wand.net.nz>

On 2020-03-27 12:25 a.m., Joe Stringer wrote:
> BPF_CALL_1(bpf_sk_release, struct sock *, sk)
>   {
> -	/* Only full sockets have sk->sk_flags. */
> -	if (!sk_fullsock(sk) || !sock_flag(sk, SOCK_RCU_FREE))
> +	if (sk_is_refcounted(sk))
>   		sock_gen_put(sk);
>   	return 0;
>   }


Would it make sense to have both the bpf_sk_release and bpf_sk_assign()
centralized so we dont replicate the functionality in tc? Reduces
maintainance overhead.

Thanks for working on this!

cheers,
jamal

  reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-27  4:25 [PATCHv3 bpf-next 0/5] Add bpf_sk_assign eBPF helper Joe Stringer
2020-03-27  4:25 ` [PATCHv3 bpf-next 1/5] bpf: Add socket assign support Joe Stringer
2020-03-27 18:44   ` Martin KaFai Lau
2020-03-27  4:25 ` [PATCHv3 bpf-next 2/5] net: Track socket refcounts in skb_steal_sock() Joe Stringer
2020-03-27 18:45   ` Martin KaFai Lau
2020-03-27  4:25 ` [PATCHv3 bpf-next 3/5] bpf: Don't refcount LISTEN sockets in sk_assign() Joe Stringer
2020-03-27 14:26   ` Jamal Hadi Salim [this message]
2020-03-27 17:38     ` Joe Stringer
2020-03-27 18:29       ` Jamal Hadi Salim
2020-03-27  4:25 ` [PATCHv3 bpf-next 4/5] selftests: bpf: add test for sk_assign Joe Stringer
2020-03-27  4:25 ` [PATCHv3 bpf-next 5/5] selftests: bpf: Extend sk_assign tests for UDP Joe Stringer
     [not found]   ` <CACAyw9-GOw5tkR8n6p7Kct9-wq4B-9ka-X8R2V8uZv8VWUY5UQ@mail.gmail.com>
2020-03-27 19:37     ` Joe Stringer
2020-03-27  5:02 ` [PATCHv3 bpf-next 0/5] Add bpf_sk_assign eBPF helper Alexei Starovoitov
2020-03-27  5:42   ` Eric Dumazet
2020-03-27 14:13 ` Jamal Hadi Salim
2020-03-27 17:43   ` Joe Stringer
2020-03-27 18:34     ` Jamal Hadi Salim
2020-03-27 18:46 ` Martin KaFai Lau
2020-03-27 21:05   ` Joe Stringer
2020-03-28 17:25     ` Daniel Borkmann
2020-03-28 17:42       ` Joe Stringer

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