From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=91.218.175.63 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792510101; b=1QRKp8r3mQvkn+xS2WPF/ueAct4IQwI1Fj7B1nzwD8ipg0vXqlWnlNA9GflpLmsn/ssr 67AH+ODxwf3UMeQmMhYAUFF2KaWoUBFzkK3GxqvOS4dZzCnp/GfHslmcgmzb5bGAccM4I DwjAtxrS4zEHQXfS45Dg88TO4fvwDa6H8XBnKluMGIY4hqCnuKDNgXsoyddo/oIunVMUS gaoyKUeuxRYkEEJdqiVC8PT3vMSow8wx4rzcrs9YA//QRyexRcNnoBOVzNOToouw8GleO 1IaRg6Ez/qOErem3uVqHsowi8MKhLBXGEA4lsRGoTFXr08XwFiUV5alQbTW+glqb3fg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792510101; 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=uG/fwT5cqpwJAbk0HDbAgLzHC3scyepYSVsygKBbADsTHYQQvQfiUM1+2iiyWAEHHKWh BomcI7nH+zvDIMqcHInv/KS/d87BIjlH1S68R6EDCAVMm4nJ5vMQbOTXEDhwN8ZzYX820 NnANgELezLvnBSSR3WwyJqOmXyRM7fShNN5iPK1hRullU1kt19NoeU1+CpdQadv7j+rTc 8UaK9TMdUhxneEA5t+uoc9WIcOTUty+VLw1AWp4uKhKnv5uebO85N6yVqV8I45+m4j1sf AH8fQE1oMmY4agxt2b+o6jJ2pKqApGNbqUW56Y/Y4VFuLhIlKAOZid0neAHed3Ja7NA== 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="Moab/Tyr"; arc=none smtp.remote-ip=91.218.175.63 Received: from mta0.migadu.com (out-63.mta0.migadu.com [91.218.175.63]) (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 A01FD606A323 for ; Tue, 20 Oct 2026 15:28:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org A01FD606A323 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=Moab/Tyr X-Envelope-To: linux-kselftest@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=1792510099; v=1; x=1793114899; b=Moab/Tyrfiz+OPS3MGAkWUPX4fEx/3GIGgPIDeJ91AT+Y9lO0XEULmOGzsDN18q+oZkC5xFJ ActbI9Oz08+8ZDqBMuYioR/9Gr2dpiDBQ3TP5MTHu8MKkXdJGRk/eYT38fkpjTFz3721ULAETAw jHKci1MjLD/OwmCGWzz51LKQ= X-Envelope-To: linux-kselftest@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: linux-kselftest@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