From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8D24C19307A; Fri, 9 Aug 2024 13:05:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723208724; cv=none; b=awXHbGbirdapLJRoA8CE4mnNqee4y8gq/8zf17dxwgTu8/EGh7Mb1cdMOISDSSDhyaxaGseuqGkEksMJLSvAXwzhbT4abLJzi2n3luzEIicXQkxzlcYiJGLZm0fi/LpVGRddlM5VYfKzBX9Ium2GtBOBTlg8NdYKlV1+/fNvo04= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723208724; c=relaxed/simple; bh=1TxU2n/WrJFO7WKPsdUtuzfNLmBI/FWdilYDh3wL93A=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=ds3S4M3eaYQg6Brp92cu1/5cgiF3/E62rZzAmHdfDyiHJi5NgXL+tLOkT9CA3Jopqq1BqsZvg+6DEjm5BMZPwNDkdCoDgloqt37SXw17r7kVcAe5IA/028WJsYwfcpUuOYvmi7lMIi0bkw9ZSH5gLZJGiO6TGx+4b1sSM9RgGpU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=usC5lZNP; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=rVtf8EX3; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="usC5lZNP"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="rVtf8EX3" From: Kurt Kanzenbach DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1723208720; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=jt4h+n+L3qxYQcsKc2n4yh36vH22pbOvngVDqC3iaxo=; b=usC5lZNP4Pt3VvAqwfpBJea7ojqs6UI1S+BnGtjtAQKPBVx+VNPx0DOjhP+f+U5eQECQaL XozhyMkxn43RYIzPBn4kLuZ2N7VJ2qk+Y6tUZT9I9XpWRFA+XeOavGeYGCyIsovM8dmz1o 9SGSGcuCpVPY9BCu3MLbq/VSnAW3GXOle2iFtIfYLlaDD5EYjaewx420j3j0Ty2c2RFm+q xKOrr/gMXzo+cfN1+cWpWF3RAa7QiD2hZJe7gUCAWMRNqvpvlb3Upboap7yCKK6m77huhH xRkiLd6zwi4YnMHPNOG0jVwsJ/ToRO/tC1AePItCG8DAFaFGU2734NBp4SBRow== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1723208720; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=jt4h+n+L3qxYQcsKc2n4yh36vH22pbOvngVDqC3iaxo=; b=rVtf8EX3I2NabjP7uxn/ny21PzoqJMfhpf9Hk3TAKcHcwVV4eaEWT0fnNp6FtvDJ2ZJfWI M9vcU8IHbs6U4OAw== To: Maciej Fijalkowski , Tony Nguyen Cc: davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, netdev@vger.kernel.org, Sriram Yagnaraman , magnus.karlsson@intel.com, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, bpf@vger.kernel.org, sriram.yagnaraman@ericsson.com, richardcochran@gmail.com, benjamin.steinke@woks-audio.com, bigeasy@linutronix.de, Chandan Kumar Rout Subject: Re: [PATCH net-next 1/4] igb: prepare for AF_XDP zero-copy support In-Reply-To: References: <20240808183556.386397-1-anthony.l.nguyen@intel.com> <20240808183556.386397-2-anthony.l.nguyen@intel.com> Date: Fri, 09 Aug 2024 15:05:18 +0200 Message-ID: <87bk21hmnl.fsf@kurt.kurt.home> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Thu Aug 08 2024, Maciej Fijalkowski wrote: > On Thu, Aug 08, 2024 at 11:35:51AM -0700, Tony Nguyen wrote: >> From: Sriram Yagnaraman >>=20 >> Always call igb_xdp_ring_update_tail under __netif_tx_lock, add a >> comment to indicate that. This is needed to share the same TX ring >> between XDP, XSK and slow paths. > > standalone commit Ok. >> +static inline bool igb_xdp_is_enabled(struct igb_adapter *adapter) >> +{ >> + return !!adapter->xdp_prog; > > READ_ONCE() plus use this everywhere else where prog is read. Sure. I'll send v6 to iwl then. 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