From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 F04712BE639; Fri, 15 May 2026 20:14:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778876059; cv=none; b=IZINDWIQ1osRijTribQ+FJsH6pWCXZ4sAy4Bcaz/UTNC7om7DZJEtxT7pGVxm7TYMCccgIBjlqFThxDy0cGdski858zKVB05sQG7KYJukxUzHmTFZHlkY65GhFGXYw9LCntOaSCJOrpcxH79FXyYZrqqeTgPWUO1aqYDXkExNT4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778876059; c=relaxed/simple; bh=ulJYPETGiLGFPMwIPDuffMKtTKgscUihrnQ20VnSf3s=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=HBjy+LW4m4VjlgZWi+Nc26m4ANXaGfUJVmYyx8c26ZKIeSydaBFCFjCHpgJES71+wSPdbWCRw4qEE7E+stb3XVWyfjFVyYpHrCWpLKZJe+L5kos6Dm+dDOzrowz2T5/Zr0CSPU9v9XReB6y4Ol615tTb/gfngYrjjUIbho1G7XY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fbHpVugY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fbHpVugY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 758B5C2BCB0; Fri, 15 May 2026 20:14:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778876058; bh=ulJYPETGiLGFPMwIPDuffMKtTKgscUihrnQ20VnSf3s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=fbHpVugYTdJr3pf45pLdYehV4qtwpK4UAogLIeYx/NXlWj5ZYZC80Ng3A/u6XOOZf tnqmPM8stpaCnnbw1y0qZZWvjLgrwE8zMyzqHIou4Kr5VPEF58jRjGzLVsjuNjUukx wv/zRcOl8Ksh+lO0Mo2TjipmoPS1dTapXGGOkdIdxrSymyoAOmvkMwe1cfvG0kzwub 3usOOC8ecYfZwPu4d4IkCmV4wT0/uRYNsODFdAGc4245h6EqqgXmHxEyVHvNV1U5G1 C1Y4mVRmqYYunh2ecPnrHA/IWYu8ZrmzPakHiuIPgYLDLo19qk8u2xB7scGQ87/QW0 UqlVrmMwbUEzw== Date: Fri, 15 May 2026 20:14:16 +0000 From: Eric Biggers To: David Howells Cc: netdev@vger.kernel.org, linux-afs@lists.infradead.org, Marc Dionne , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman Subject: Re: [PATCH net-next 2/5] net/rxrpc: Use local FCrypt-PCBC implementation Message-ID: <20260515201416.GA3484095@google.com> References: <20260508182318.GA4145640@google.com> <20260428024400.123337-3-ebiggers@kernel.org> <20260428024400.123337-1-ebiggers@kernel.org> <286248.1778263325@warthog.procyon.org.uk> <287476.1778266603@warthog.procyon.org.uk> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <287476.1778266603@warthog.procyon.org.uk> On Fri, May 08, 2026 at 07:56:43PM +0100, David Howells wrote: > Eric Biggers wrote: > > > Also I'm waiting to see if the following patch gets merged: > > https://lore.kernel.org/netdev/20260502211340.446927-1-n7l8m4@u.northwestern.edu/ > > This is the favoured solution: > > https://lore.kernel.org/netdev/af2kdW2F1gJ9U-Gg@v4bel/ > > The problem with the one you mentioned is that it does a mandatory copy, even > when it doesn't need to, for rxgk. I can benchmark that to see what the > performance impact it has. Seems that the latest is now https://lore.kernel.org/netdev/20260514155304.2249591-4-dhowells@redhat.com/ which is back to just using a linear buffer unconditionally. I'll resend this series after that goes in. - Eric