From: "Toke Høiland-Jørgensen" <toke@redhat.com>
To: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
Eduard Zingerman <eddyz87@gmail.com>, Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@google.com>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Jesper Dangaard Brouer <hawk@kernel.org>
Cc: Alexander Lobakin <aleksander.lobakin@intel.com>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
bpf@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH net-next v2 2/4] bpf: test_run: Use system page pool for XDP live frame mode
Date: Wed, 21 Feb 2024 15:48:48 +0100 [thread overview]
Message-ID: <87sf1lzxdb.fsf@toke.dk> (raw)
In-Reply-To: <20240220210342.40267-3-toke@redhat.com>
Toke Høiland-Jørgensen <toke@redhat.com> writes:
> The cookie is a random 128-bit value, which means the probability that
> we will get accidental collisions (which would lead to recycling the
> wrong page values and reading garbage) is on the order of 2^-128. This
> is in the "won't happen before the heat death of the universe" range, so
> this marking is safe for the intended usage.
Alright, got a second opinion on this from someone better at security
than me; I'll go try out some different ideas :)
pw-bot: changes-requested
next prev parent reply other threads:[~2024-02-21 14:48 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-20 21:03 [PATCH net-next v2 0/4] Change BPF_TEST_RUN use the system page pool for live XDP frames Toke Høiland-Jørgensen
2024-02-20 21:03 ` [PATCH net-next v2 1/4] net: Register system page pool as an XDP memory model Toke Høiland-Jørgensen
2024-04-03 20:20 ` John Fastabend
2024-04-04 9:08 ` Alexander Lobakin
2024-02-20 21:03 ` [PATCH net-next v2 2/4] bpf: test_run: Use system page pool for XDP live frame mode Toke Høiland-Jørgensen
2024-02-21 14:48 ` Toke Høiland-Jørgensen [this message]
2024-04-04 11:23 ` Jesper Dangaard Brouer
2024-04-04 13:34 ` Toke Høiland-Jørgensen
2024-04-03 16:34 ` Alexander Lobakin
2024-04-03 20:39 ` John Fastabend
2024-04-04 11:43 ` Jesper Dangaard Brouer
2024-04-04 13:09 ` Alexander Lobakin
2024-02-20 21:03 ` [PATCH net-next v2 3/4] bpf: test_run: Fix cacheline alignment of live XDP frame data structures Toke Høiland-Jørgensen
2024-02-20 21:03 ` [PATCH net-next v2 4/4] page pool: Remove init_callback parameter Toke Høiland-Jørgensen
2024-02-29 18:12 ` Ilias Apalodimas
2024-02-21 14:45 ` [PATCH net-next v2 0/4] Change BPF_TEST_RUN use the system page pool for live XDP frames Toke Høiland-Jørgensen
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