From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 4DB27402BB7; Fri, 22 May 2026 14:05:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779458723; cv=none; b=fvdv++YowkNr31ppb1u9Dy7BoYTuirOBSjqy43LGd3sF0Mi2rocGwJMcOAFAA7uIwUrgyGQzIulXQkPMSuRN1NQ3a1EmnX+lR/m7FlU4Dykhn4wkLN700cVMQdbRB+v1Q7/HAE6fCmbF5OppKEkoA4eDgCTKVck3uWjKJYCKu6A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779458723; c=relaxed/simple; bh=RqcLh2LnvS6fXzVR5beWGIhEjU/YJR1gHxXKe4vDf+M=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=j410poMn9hqF9MvZtYNbbO9qndpUn8Sbmu++CNf9yQvm1ldEB6IKuYpdEtsYZksvtNR3FYKVTjWTBS7g50v1L47rnsDH78EcKT0/5F78eBUqu9AG5ynv4HqDyVYjE8O+heaIfhrY5ne9bENNQ8QxWFBltKigyKIHM14aVXjx23Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ih6VV6iL; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ih6VV6iL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 786941F000E9; Fri, 22 May 2026 14:05:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779458717; bh=jZBuRXNonSLJinDq4udon3aMozFZI9+NktV5rS+ed34=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=ih6VV6iLK1YrGAueUjmW1vxc8p1E2PJYy6A5JjOnkRU4LnN4uKVxO2lAUDYZFoZh1 xISyDCD206o9TB2Kogw5E6A2oTvtTtJxVelSsQGgUnxh72X9najNQrT2DUEFIa1waJ Xf03YklXttLaWf+ajCph6B8Rf74ygNtAw6JE6wKQXTIH5NQBssZ87p2LUvF8TpJJCR HVp/ephzmTq14Ic+gOCvx+Y3b2i5YcO1f4t1sBw+KyVhQgYa/+LXWPYrEYnSFDhWIa f0DaVi+nT1Tws9GvGQ+5GMyA+y2TZCQcueumowMpH9Itq+Mq8ekTvS2mAAUgKDWZnr 3W3dSJO8AHMEw== Date: Fri, 22 May 2026 07:05:15 -0700 From: Jakub Kicinski To: =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= Cc: Alexander Duyck , kernel-team@meta.com, Andrew Lunn , "David S. Miller" , Eric Dumazet , Paolo Abeni , Shuah Khan , netdev@vger.kernel.org, Jacob Keller , Mohsin Bashir , "Mike Marciniszyn (Meta)" , Pavel Begunkov , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH net-next 0/3] fbnic: Support larger io_uring zcrx buffers Message-ID: <20260522070515.044d7d97@kernel.org> In-Reply-To: <20260522113225.241337-1-bjorn@kernel.org> References: <20260522113225.241337-1-bjorn@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Fri, 22 May 2026 13:32:19 +0200 Bj=C3=B6rn T=C3=B6pel wrote: > drivers/net/ethernet/meta/fbnic/fbnic_csr.h | 29 +-- > .../net/ethernet/meta/fbnic/fbnic_debugfs.c | 5 +- > drivers/net/ethernet/meta/fbnic/fbnic_txrx.c | 168 ++++++++++++++---- > drivers/net/ethernet/meta/fbnic/fbnic_txrx.h | 6 + > .../selftests/drivers/net/hw/iou-zcrx.c | 28 ++- > 5 files changed, 176 insertions(+), 60 deletions(-) Hm. What's merging the frags? the hw will serve them back to us in 4kB chunks. Frankly the iou zc hurts me less that the fact that we run out of nr_frags in GRO :(