From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=91.218.175.56 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792510102; b=CvM0EWkcizBfywrSdKERh5ct+zqqQeVg22B44ZgrqSrRtyWuBIf3BOqdhnJBfSsIQMIM aLi9h/SAppOrYdltkFE76tpDLsMSZlQNS80RQPH6i/1BROFaMM2tW7ooH4yZprjD6ipED d6MoWz7CLbGUZqveso1QuxTaYuF+lpCDxhiBVDBYOxYy/6ZFHeGmCHfK4SzRVoeo5teZc vV0SF4HehvwL+5z7n0ed3KxIuNAyzzco5+cl7GDiZu0suEmJaDDAiG3Kl62cMtQJSpBY7 gVTf+bpdlqsQB7mE9pAROUFcB0AuS5HV8QBATXD4TEWtZmIzdTf2Ji7XzmBydCbqdqw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792510102; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:From:To:Cc:Subject:Date:Message-ID: X-Mailer:MIME-Version:Content-Transfer-Encoding; bh=DAFHkg4Hi5ytokXkuyFfDVfxiK2CCIWzJMm4haXDhGI=; b=bHnk3QGJ1vvEg0l2Ddxcnfy2h4V9hBuJDl0Nq7xebOzJ4l1tOYhmVzMcAnBOl2n1w/Vh xmXaiTr0UE4DSO9Mty4BqCw16kuJulE9Em2IFkoypaVxAqf8uHqGNO7BgEWYiukuBqM+8 cTAhCxjKo76rquvtGSXif7ASSf8GaurEb1QbtFRxiCe1h8EW5qhFzkstYdNxtTg0W1cfq /4Gc2KIM1tbXIfGf90Tqpn2r9xpwFy0wuMault7NHC0LKhlXGKOMatB8E2DsZ/bgPoTKT Akz+3qQAooanBO9D+J6yI/PJ81gNCzXdK4thgpQO3SEQ1Vdpet/v4WmD36pZFpYSpVA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=nznvEF9C; arc=none smtp.remote-ip=91.218.175.56 Received: from mta0.migadu.com (out-56.mta0.migadu.com [91.218.175.56]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 47971606A31D for ; Tue, 20 Oct 2026 15:28:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 47971606A31D Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=nznvEF9C X-Envelope-To: bpf@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=L6MRdmgTqY9S3w7Q6dez7ePn+jJY+pxXNkWkG83F6Vw=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1792510098; v=1; x=1793114898; b=nznvEF9CdeJw3GY1A5JC/8OrgJY/3LbgTMc9Oj6bgKxGMag5XcO+ezoHB9ll84PCDOZxq6od AzB8YUMafgj2JV2IjXVTwHEcGs/CmDv9gukV0HAXNADqwGp7EBaDTbADZGWA3MDLw1jenKx1/Zn IEUcgL91TjxKIydLxEH7vWw0= X-Envelope-To: bpf@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id fb790a52be900cec; Tue, 20 Oct 2026 15:28:18 +0000 X-Mizu-Trace-ID: fb790a52be900cec X-Migadu-Flow: FLOW_OUT From: Leon Hwang To: bpf@vger.kernel.org Cc: Andrew Lunn , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Martin KaFai Lau , Song Liu , Yonghong Song , Jiri Olsa , Emil Tsalapatis , Ihor Solodrai , Jesper Dangaard Brouer , John Fastabend , Stanislav Fomichev , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Shuah Khan , Kuniyuki Iwashima , Hangbin Liu , Martin Karsten , Masashi Honma , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Leon Hwang Subject: [PATCH bpf-next v3 0/6] bpf: Add syscall common attrs support for xdp link_create Date: Tue, 20 Oct 2026 23:27:58 +0800 Message-ID: <20261020152804.39863-1-leon.hwang@linux.dev> X-Mailer: git-send-email 2.55.0 X-Mailing-List: bpf@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit I'm planning to add syscall common attrs support for LINK_CREATE cmd. This is the first series for the plan, that adds syscall common attrs support for xdp LINK_CREATE. Thereafter, retire the tracepoint bpf_xdp_link_attach_failed, because the underlying driver's error can be back-propagated to user space via the syscall common attrs. Changes: v2 -> v3: * Drop bpf_log_attr_report_size() helper. (Alexei) * Drop 2nd write for log_true_size and the put_prog label. (Alexei) * v2: https://lore.kernel.org/bpf/20261019153628.15912-1-leon.hwang@linux.dev/ v1 -> v2: * Add log for invalid prog type in link_create(). * Reject log_opts for fallback bpf_raw_tracepoint_open() in libbpf. * Report log_true_size as 0 before creating concrete link, and report the actual log_true_size when fail to create the concrete link. (Sashiko) * Add stub bpf_log() when CONFIG_BPF_SYSCALL is not set. (bots) * Check 'extack._msg' before adding 'extack._msg' to log buffer. (Sashiko, bot+bpf-ci) * Change __bpf_sys_fd to __sys_bpf_fd in the subject and body of patch 4. (bot+bpf-ci) * Move OPTS_VALID(opts, bpf_link_create_opts) to __sys_bpf_fd(). (Sashiko) * Move bpf_link_create_log to the LIBBPF_1.9.0 section. (Sashiko) * Update patch msg with a concrete case in patch 5. (bot+bpf-ci) * Factor out helpers to simplify the tests code. (bot+bpf-ci) * v1: https://lore.kernel.org/bpf/20261017142649.51047-1-leon.hwang@linux.dev/ Leon Hwang (6): bpf: Add syscall common attrs support for link_create bpf: Add syscall common attrs support for xdp link_create bpf: Retire tracepoint bpf_xdp_link_attach_failed libbpf: Factor out __sys_bpf_fd helper libbpf: Add bpf_link_create_log API selftests/bpf: Add tests to verify link_create logs include/linux/bpf_verifier.h | 5 + include/linux/netdevice.h | 3 +- include/trace/events/xdp.h | 17 --- kernel/bpf/syscall.c | 36 +++++-- net/core/dev.c | 8 +- tools/lib/bpf/bpf.c | 69 ++++++++---- tools/lib/bpf/bpf.h | 5 + tools/lib/bpf/libbpf.map | 2 + .../selftests/bpf/prog_tests/xdp_attach.c | 65 ----------- .../selftests/bpf/prog_tests/xdp_link.c | 101 ++++++++++++++++++ .../bpf/progs/test_xdp_attach_fail.c | 54 ---------- 11 files changed, 198 insertions(+), 167 deletions(-) delete mode 100644 tools/testing/selftests/bpf/progs/test_xdp_attach_fail.c -- 2.55.0