From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A945FC76195 for ; Mon, 27 Mar 2023 08:41:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233254AbjC0Ilt (ORCPT ); Mon, 27 Mar 2023 04:41:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36564 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233152AbjC0Ikf (ORCPT ); Mon, 27 Mar 2023 04:40:35 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF1FE6A76; Mon, 27 Mar 2023 01:37:01 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 8FDA81F8A8; Mon, 27 Mar 2023 08:37:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1679906220; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=BYwAGMe1PfAGydSVqlgv0hiTKV8LxJz7Cfr4pQvks4M=; b=pnRmRrpElIfOGh45HyDbGyTLv5HE1XJiCA+hgB75qnV0jL4KSVd4BTS/HMLMTgZ6vr5c/q EW2BxF/x9H47o/NyMlbMwkvnqPLcy3SN0f4vddtVKFgShfc+EvOgYvcl9QnYQkD2CuiNrS 8JiD6T2Fu41dFmCAKBsZ2kYeG2PvttU= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 3D0B913329; Mon, 27 Mar 2023 08:37:00 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id rNmIDaxVIWS+SAAAMHmgww (envelope-from ); Mon, 27 Mar 2023 08:37:00 +0000 From: Juergen Gross To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Cc: Juergen Gross , Wei Liu , Paul Durrant , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , xen-devel@lists.xenproject.org, Jan Beulich Subject: [PATCH 2/2] xen/netback: remove not needed test in xenvif_tx_build_gops() Date: Mon, 27 Mar 2023 10:36:46 +0200 Message-Id: <20230327083646.18690-3-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230327083646.18690-1-jgross@suse.com> References: <20230327083646.18690-1-jgross@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The tests for the number of grant mapping or copy operations reaching the array size of the operations buffer at the end of the main loop in xenvif_tx_build_gops() isn't needed. The loop can handle at maximum MAX_PENDING_REQS transfer requests, as XEN_RING_NR_UNCONSUMED_REQUESTS() is taking unsent responses into consideration, too. Remove the tests. Suggested-by: Jan Beulich Signed-off-by: Juergen Gross --- drivers/net/xen-netback/netback.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 111c179f161b..4943be4fd99d 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -1082,10 +1082,6 @@ static void xenvif_tx_build_gops(struct xenvif_queue *queue, __skb_queue_tail(&queue->tx_queue, skb); queue->tx.req_cons = idx; - - if ((*map_ops >= ARRAY_SIZE(queue->tx_map_ops)) || - (*copy_ops >= ARRAY_SIZE(queue->tx_copy_ops))) - break; } return; -- 2.35.3