netdev - RE: [PATCH bpf-next 5/8] bpf: Allow selecting reuseport socket from a SOCKMAP

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5dda1bbd8b624_62c72ad877f985c4d7@john-XPS-13-9370.notmuch>
Date:   Sat, 23 Nov 2019 21:57:17 -0800
From:   John Fastabend <john.fastabend@...il.com>
To:     Jakub Sitnicki <jakub@...udflare.com>, bpf@...r.kernel.org
Cc:     netdev@...r.kernel.org, kernel-team@...udflare.com,
        John Fastabend <john.fastabend@...il.com>,
        Martin KaFai Lau <kafai@...com>
Subject: RE: [PATCH bpf-next 5/8] bpf: Allow selecting reuseport socket from a
 SOCKMAP

Jakub Sitnicki wrote:
> SOCKMAP now supports storing references to listening sockets. Nothing keeps
> us from using it as an array of sockets to select from in SK_REUSEPORT
> programs.
> 
> Whitelist the map type with the BPF helper for selecting socket. However,
> impose a restriction that the selected socket needs to be a listening TCP
> socket or a bound UDP socket (connected or not).
> 
> The only other map type that works with the BPF reuseport helper,
> REUSEPORT_SOCKARRAY, has a corresponding check in its update operation
> handler.
> 
> Signed-off-by: Jakub Sitnicki <jakub@...udflare.com>
> ---

Acked-by: John Fastabend <john.fastabend@...il.com>