From: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
To: "David S . Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Eric Dumazet <edumazet@google.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Martin KaFai Lau <kafai@fb.com>
Cc: Benjamin Herrenschmidt <benh@amazon.com>,
Kuniyuki Iwashima <kuniyu@amazon.co.jp>,
Kuniyuki Iwashima <kuni1840@gmail.com>,
<osa-contribution-log@amazon.com>, <bpf@vger.kernel.org>,
<netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v1 bpf-next 06/11] bpf: Introduce two attach types for BPF_PROG_TYPE_SK_REUSEPORT.
Date: Tue, 1 Dec 2020 23:44:13 +0900 [thread overview]
Message-ID: <20201201144418.35045-7-kuniyu@amazon.co.jp> (raw)
In-Reply-To: <20201201144418.35045-1-kuniyu@amazon.co.jp>
This commit adds new bpf_attach_type for BPF_PROG_TYPE_SK_REUSEPORT to
check if the attached eBPF program is capable of migrating sockets.
When the eBPF program is attached, the kernel runs it for socket migration
only if the expected_attach_type is BPF_SK_REUSEPORT_SELECT_OR_MIGRATE.
The kernel will change the behaviour depending on the returned value:
- SK_PASS with selected_sk, select it as a new listener
- SK_PASS with selected_sk NULL, fall back to the random selection
- SK_DROP, cancel the migration
Link: https://lore.kernel.org/netdev/20201123003828.xjpjdtk4ygl6tg6h@kafai-mbp.dhcp.thefacebook.com/
Suggested-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
---
include/uapi/linux/bpf.h | 2 ++
kernel/bpf/syscall.c | 8 ++++++++
tools/include/uapi/linux/bpf.h | 2 ++
3 files changed, 12 insertions(+)
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 85278deff439..cfc207ae7782 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -241,6 +241,8 @@ enum bpf_attach_type {
BPF_XDP_CPUMAP,
BPF_SK_LOOKUP,
BPF_XDP,
+ BPF_SK_REUSEPORT_SELECT,
+ BPF_SK_REUSEPORT_SELECT_OR_MIGRATE,
__MAX_BPF_ATTACH_TYPE
};
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index f3fe9f53f93c..a0796a8de5ea 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -2036,6 +2036,14 @@ bpf_prog_load_check_attach(enum bpf_prog_type prog_type,
if (expected_attach_type == BPF_SK_LOOKUP)
return 0;
return -EINVAL;
+ case BPF_PROG_TYPE_SK_REUSEPORT:
+ switch (expected_attach_type) {
+ case BPF_SK_REUSEPORT_SELECT:
+ case BPF_SK_REUSEPORT_SELECT_OR_MIGRATE:
+ return 0;
+ default:
+ return -EINVAL;
+ }
case BPF_PROG_TYPE_EXT:
if (expected_attach_type)
return -EINVAL;
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 85278deff439..cfc207ae7782 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -241,6 +241,8 @@ enum bpf_attach_type {
BPF_XDP_CPUMAP,
BPF_SK_LOOKUP,
BPF_XDP,
+ BPF_SK_REUSEPORT_SELECT,
+ BPF_SK_REUSEPORT_SELECT_OR_MIGRATE,
__MAX_BPF_ATTACH_TYPE
};
--
2.17.2 (Apple Git-113)
next prev parent reply other threads:[~2020-12-01 14:47 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-01 14:44 [PATCH v1 bpf-next 00/11] Socket migration for SO_REUSEPORT Kuniyuki Iwashima
2020-12-01 14:44 ` [PATCH v1 bpf-next 01/11] tcp: Keep TCP_CLOSE sockets in the reuseport group Kuniyuki Iwashima
2020-12-05 1:31 ` Martin KaFai Lau
2020-12-06 4:38 ` Kuniyuki Iwashima
2020-12-01 14:44 ` [PATCH v1 bpf-next 02/11] bpf: Define migration types for SO_REUSEPORT Kuniyuki Iwashima
2020-12-01 14:44 ` [PATCH v1 bpf-next 03/11] tcp: Migrate TCP_ESTABLISHED/TCP_SYN_RECV sockets in accept queues Kuniyuki Iwashima
2020-12-01 15:25 ` Eric Dumazet
2020-12-03 14:14 ` Kuniyuki Iwashima
2020-12-03 14:31 ` Eric Dumazet
2020-12-03 15:41 ` Kuniyuki Iwashima
2020-12-07 20:33 ` Martin KaFai Lau
2020-12-08 6:31 ` Kuniyuki Iwashima
2020-12-08 7:34 ` Martin KaFai Lau
2020-12-08 8:17 ` Kuniyuki Iwashima
2020-12-09 3:09 ` Martin KaFai Lau
2020-12-09 8:05 ` Kuniyuki Iwashima
2020-12-09 16:57 ` Kuniyuki Iwashima
2020-12-10 1:53 ` Martin KaFai Lau
2020-12-10 5:58 ` Kuniyuki Iwashima
2020-12-10 19:33 ` Martin KaFai Lau
2020-12-14 17:16 ` Kuniyuki Iwashima
2020-12-05 1:42 ` Martin KaFai Lau
2020-12-06 4:41 ` Kuniyuki Iwashima
[not found] ` <20201205160307.91179-1-kuniyu@amazon.co.jp>
2020-12-07 20:14 ` Martin KaFai Lau
2020-12-08 6:27 ` Kuniyuki Iwashima
2020-12-08 8:13 ` Martin KaFai Lau
2020-12-08 9:02 ` Kuniyuki Iwashima
2020-12-08 6:54 ` Martin KaFai Lau
2020-12-08 7:42 ` Kuniyuki Iwashima
2020-12-01 14:44 ` [PATCH v1 bpf-next 04/11] tcp: Migrate TFO requests causing RST during TCP_SYN_RECV Kuniyuki Iwashima
2020-12-01 15:30 ` Eric Dumazet
2020-12-01 14:44 ` [PATCH v1 bpf-next 05/11] tcp: Migrate TCP_NEW_SYN_RECV requests Kuniyuki Iwashima
2020-12-01 15:13 ` Eric Dumazet
2020-12-03 14:12 ` Kuniyuki Iwashima
2020-12-10 0:07 ` Martin KaFai Lau
2020-12-10 5:15 ` Kuniyuki Iwashima
2020-12-10 18:49 ` Martin KaFai Lau
2020-12-14 17:03 ` Kuniyuki Iwashima
2020-12-15 2:58 ` Martin KaFai Lau
2020-12-16 16:41 ` Kuniyuki Iwashima
2020-12-16 22:24 ` Martin KaFai Lau
2020-12-01 14:44 ` Kuniyuki Iwashima [this message]
2020-12-02 2:04 ` [PATCH v1 bpf-next 06/11] bpf: Introduce two attach types for BPF_PROG_TYPE_SK_REUSEPORT Andrii Nakryiko
2020-12-02 19:19 ` Martin KaFai Lau
2020-12-03 4:24 ` Martin KaFai Lau
2020-12-03 14:16 ` Kuniyuki Iwashima
2020-12-04 5:56 ` Martin KaFai Lau
2020-12-06 4:32 ` Kuniyuki Iwashima
2020-12-01 14:44 ` [PATCH v1 bpf-next 07/11] libbpf: Set expected_attach_type " Kuniyuki Iwashima
2020-12-01 14:44 ` [PATCH v1 bpf-next 08/11] bpf: Add migration to sk_reuseport_(kern|md) Kuniyuki Iwashima
2020-12-01 14:44 ` [PATCH v1 bpf-next 09/11] bpf: Support bpf_get_socket_cookie_sock() for BPF_PROG_TYPE_SK_REUSEPORT Kuniyuki Iwashima
2020-12-04 19:58 ` Martin KaFai Lau
2020-12-06 4:36 ` Kuniyuki Iwashima
2020-12-01 14:44 ` [PATCH v1 bpf-next 10/11] bpf: Call bpf_run_sk_reuseport() for socket migration Kuniyuki Iwashima
2020-12-01 14:44 ` [PATCH v1 bpf-next 11/11] bpf: Test BPF_SK_REUSEPORT_SELECT_OR_MIGRATE Kuniyuki Iwashima
2020-12-05 1:50 ` Martin KaFai Lau
2020-12-06 4:43 ` Kuniyuki Iwashima
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