From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f54.google.com (mail-ej1-f54.google.com [209.85.218.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2A91530B52F for ; Tue, 23 Sep 2025 20:00:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.54 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758657652; cv=none; b=S+X2cernK0CdroUPSPilPU5aJZTAf5R9PsZycSphvKuqLu/Q8F25faaHOENbzQdCA7N7uvFud1bJs05oq8PnK7ozzgVyrg9NdvrFEp76Ovtq8Ky91wUSpt6WkP2XXLuE6EUFH/byXkHziK3ddiW7W46/tC9B79rEnNkb5Era0Eo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758657652; c=relaxed/simple; bh=0fk/n7B9mEiC2MeLQRlJTessoCBaV440mO7d/PjdBWI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Kvrun7AmiXeU3gieY8202utaNmle/LlyOylRBt8GwUmvIXbam8RlvdLKATZSx/XkOo3QOtbI2lQOqzcBGdHc41gpzi+NW1k3aWNt6fCvcBjZqz13W0m7FNI2xkucpATkxdKBX9IGSIw8OQYRhJdM2cuUnrNo8Av73XWSL004+Xw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=QOKr9NwM; arc=none smtp.client-ip=209.85.218.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="QOKr9NwM" Received: by mail-ej1-f54.google.com with SMTP id a640c23a62f3a-b2d6e91bb66so40027866b.3 for ; Tue, 23 Sep 2025 13:00:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1758657648; x=1759262448; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=RxvGwdECme9sva+F1ujIW8jaKUJIsBLHPhmAsgPJYCQ=; b=QOKr9NwM/6or7EQebm5FE7VP3tOWQMPUKsh/107AMXeUNWsDB0R3F1KuSvB8poPTrg iTTGpClFIY2RCEirkfwu2C31vOBHY8+jNKt+xVTKqBWvAVTzHHD+o8kEu4lIRe8yeKiP G4uWeXFNfybb+cu11YBcb4Jfh6yyMcXxWPei60w+ezC6AYBKW/QWErcTYqm1tlaC+QcG 2fzvNDOChGNsDZx7Qj5RxJTG/xD4duO6hkNaGcopWW+TVx9GUMRmOKgBZe8+aTfHDkM2 aNKDu7x6Wx0GL4YpmdtpwyYQtp4j7rJyhr85qtPgkTiulzNcHdyTIgWXpPg0ow1Kkr+5 Hk+g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758657648; x=1759262448; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=RxvGwdECme9sva+F1ujIW8jaKUJIsBLHPhmAsgPJYCQ=; b=e39Izkd+ZKuLwT2AxmtUfw6KT+mFq/EdQSdlJd14xHhhkbMuorrfVyEMHfRL39R1zT ikUKBn24y5BIx+jA2Dy020clB9H6Jni3Pffu852+zOT/PQVRN6WOJ6oaJkOCHs5FPtzf iffB1RKpR2xownsSB6d9WR6GjQQMT9rpz1dCTCXDAqBGlg8Eg/ymq2Tr8QztIl6bN5L8 jLiBIEka3Ht9jZWuPxa/docY0ZE7i7CBbhP4W0qUX7eieHO1PrgGYzevrlHy1L6dXDN8 uwm5rCjbrgUVYGQ3y7+RdYapaGtpDnQ1+juDIYRKyGvh9NMtiCiyR8cw4GAoO7s2O4Rq AyXA== X-Forwarded-Encrypted: i=1; AJvYcCU6k9I0BxcX4L3P02LOhmrh64azr9t+s76Rbw2EPc6F1XWVuHZI7Sbc8QDNXvtH3OmlzhlkHUo=@vger.kernel.org X-Gm-Message-State: AOJu0YyRL0jryEqAQuTnF4LgReKlVGjCdT+gKUY6bLd/tyA+UXeCijuA trwaAIqG7lujP8Vr0pxJ52IE9+pfT7FOCF/adWQ9AdK3iyD4eJwaDBrH X-Gm-Gg: ASbGnct7vBfEUkDHgf3jJy7HBNgx2gUlFZ2M5WEf8ih7fDJ2zNAZ0oGN95a/pMR7F8x P89pkcJOn4PwATrzeAHs1LdLc3wfXOxUEIVZXT/iF96lDPxKnDr7thWxi8cVifmdRId7ZTHCIYC N/cJMgDUd9nFd2GLO934uD2Aqme9iGx4A5WSvwUW88xVHzFRo9q34eY9eZgYm/n++f+JRMOcynw YSb/3w4W6RIFukWO19iHdoRUsV5TEy8cf/hNYRQ2oBZZ8hQKRB6kwr6KefzfcIQCGrIaA6vPYrT 42sBZmBBlNTyBFEbEqf7PRaUJSrS4rGpWw7nlUYy0wST2AkLItX5EazuL6hLzCwIGPIYKrMwJMQ lt4Z4sCnfqCEcHYbmssLBsazzrWQ5TEsEIl0= X-Google-Smtp-Source: AGHT+IE9jKk/zzdKDwXkO7sxSkoqe/jjpTEgScJwrOwZYkbO90+nHVble2JF4n49Nmv6GbSPvrhTqg== X-Received: by 2002:a17:907:940f:b0:af9:6580:c34f with SMTP id a640c23a62f3a-b302ae307b6mr174461766b.9.1758657648256; Tue, 23 Sep 2025 13:00:48 -0700 (PDT) Received: from bhk ([165.50.1.144]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b2ac72dbe92sm672074066b.111.2025.09.23.13.00.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Sep 2025 13:00:48 -0700 (PDT) From: Mehdi Ben Hadj Khelifa To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, donald.hunter@gmail.com, andrew+netdev@lunn.ch, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, matttbe@kernel.org, chuck.lever@oracle.com, jdamato@fastly.com, skhawaja@google.com, dw@davidwei.uk, mkarsten@uwaterloo.ca, yoong.siang.song@intel.com, david.hunter.linux@gmail.com, skhan@linuxfoundation.org Cc: horms@kernel.org, sdf@fomichev.me, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, Mehdi Ben Hadj Khelifa Subject: [PATCH RFC 2/4] net: xdp: Add xmo_rx_queue_index callback Date: Tue, 23 Sep 2025 22:00:13 +0100 Message-ID: <20250923210026.3870-3-mehdi.benhadjkhelifa@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250923210026.3870-1-mehdi.benhadjkhelifa@gmail.com> References: <20250923210026.3870-1-mehdi.benhadjkhelifa@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Introduce xmo_rx_queue_index netdev callback in order allow the eBPF program bounded to the device to retrieve the RX queue index from the hw NIC. Signed-off-by: Mehdi Ben Hadj Khelifa --- include/net/xdp.h | 5 +++++ net/core/xdp.c | 15 +++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/include/net/xdp.h b/include/net/xdp.h index b40f1f96cb11..edbf66c31f83 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -547,6 +547,10 @@ void xdp_attachment_setup(struct xdp_attachment_info *info, NETDEV_XDP_RX_METADATA_VLAN_TAG, \ bpf_xdp_metadata_rx_vlan_tag, \ xmo_rx_vlan_tag) \ + XDP_METADATA_KFUNC(XDP_METADATA_KFUNC_RX_QUEUE_INDEX, \ + NETDEV_XDP_RX_METADATA_QUEUE_INDEX, \ + bpf_xdp_metadata_rx_queue_index, \ + xmo_rx_queue_index) \ enum xdp_rx_metadata { #define XDP_METADATA_KFUNC(name, _, __, ___) name, @@ -610,6 +614,7 @@ struct xdp_metadata_ops { enum xdp_rss_hash_type *rss_type); int (*xmo_rx_vlan_tag)(const struct xdp_md *ctx, __be16 *vlan_proto, u16 *vlan_tci); + int (*xmo_rx_queue_index)(const struct xdp_md *ctx, u32 *queue_index); }; #ifdef CONFIG_NET diff --git a/net/core/xdp.c b/net/core/xdp.c index 491334b9b8be..78c0c63e343c 100644 --- a/net/core/xdp.c +++ b/net/core/xdp.c @@ -962,6 +962,21 @@ __bpf_kfunc int bpf_xdp_metadata_rx_vlan_tag(const struct xdp_md *ctx, return -EOPNOTSUPP; } +/** + * bpf_xdp_metadata_rx_queue_index - Read XDP frame RX queue index. + * @ctx: XDP context pointer. + * @queue_index: Return value pointer. + * + * Return: + * * Returns 0 on success or ``-errno`` on error. + * * ``-EOPNOTSUPP`` : means device driver does not implement kfunc + * * ``-ENODATA`` : means no RX queue index available for this frame + */ +__bpf_kfunc int bpf_xdp_metadata_rx_queue_index(const struct xdp_md *ctx, u32 *queue_index) +{ + return -EOPNOTSUPP; +} + __bpf_kfunc_end_defs(); BTF_KFUNCS_START(xdp_metadata_kfunc_ids) -- 2.51.0