From patchwork Fri May 26 11:49:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Gu X-Patchwork-Id: 99461 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp407968vqr; Fri, 26 May 2023 04:51:22 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ6wSUEQOlYQkITVN4/YCbEgInKkdWvQMQFa0ZAjQFWcgw8ND441hbk8oYqwhUR6vpH8TnHn X-Received: by 2002:a17:90a:e391:b0:253:3b3d:477f with SMTP id b17-20020a17090ae39100b002533b3d477fmr2194444pjz.13.1685101882337; Fri, 26 May 2023 04:51:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1685101882; cv=none; d=google.com; s=arc-20160816; b=DTn+GRrnx5LDlkxb+L5w+v0CIl4QU4AzH948GQKxWGll4jjYEOU9gXRKdhY7iYRnyt OguBOzV+tRIDf75Z/wdsAmCKZDp6ZxXm/tsNriDOznmeTQxhTP6KfXMqa9aGYzQrJB5i S0GSFOie1Hv4na+fLUqAGKB0Kao4TxbIUi/htRVZANgL8+d0f0BvCKROZVvHf9f06RIU VibI2SzEqS8vJXi2RizKH1FvhXR/h0sQm1fzO+T2rRcgStE64lwqg63Oa5QjD/9XmKAj xJVd/Omlin+9+0BcoN35FuaklrKlFRMwGazYgnqmR4BfgnKFGhbfdUXLCciJ5fCeqGAs GgBQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:references:in-reply-to:message-id:date:subject :cc:to:from; bh=K1pV8fd/CWHNnW3wJZjlTmyewKV5MjagQwYKOsqRr+Y=; b=rNdu0/j4pljPKVw+JbMEfPITIKlgn3gCbpp6ACBx9jfpXCsk+ykzGV39pKW+9kp0qt aoNSk15UX1xMl3xOuv8ML0Qm0IgSEy3TXGi4p2JoMN/zMp/Q3u3HEKa07nfbIJCN11aE D05gd2AKznqhPlErdIvYVlkCmG4vyyS0i/J7EmF28jDCaZ3A+R+pXAt4rATp4hxwm5Li rwmYZZxcvUTi6NhxYOacx0FJSxm+dZ/q/7fVgU8O6gOW4n0LQvv5Wls7mXRwETSn1obg QaqjkoaPu28vAwyHCDL3v5h4TK/yH57D0sTpWqmew9MkfD8fTBaS+UxUmPuhOBkaSZru JDAg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id bg10-20020a17090b0d8a00b002470264eb50si3783566pjb.169.2023.05.26.04.51.10; Fri, 26 May 2023 04:51:22 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243348AbjEZLtX (ORCPT + 99 others); Fri, 26 May 2023 07:49:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40400 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243374AbjEZLtL (ORCPT ); Fri, 26 May 2023 07:49:11 -0400 Received: from out30-112.freemail.mail.aliyun.com (out30-112.freemail.mail.aliyun.com [115.124.30.112]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 91AA919A; Fri, 26 May 2023 04:49:08 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R791e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046051;MF=guwen@linux.alibaba.com;NM=1;PH=DS;RN=10;SR=0;TI=SMTPD_---0VjWOl8M_1685101744; Received: from h68b04305.sqa.eu95.tbsite.net(mailfrom:guwen@linux.alibaba.com fp:SMTPD_---0VjWOl8M_1685101744) by smtp.aliyun-inc.com; Fri, 26 May 2023 19:49:04 +0800 From: Wen Gu To: kgraul@linux.ibm.com, wenjia@linux.ibm.com, jaka@linux.ibm.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: linux-s390@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net 1/2] net/smc: Scan from current RMB list when no position specified Date: Fri, 26 May 2023 19:49:00 +0800 Message-Id: <1685101741-74826-2-git-send-email-guwen@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1685101741-74826-1-git-send-email-guwen@linux.alibaba.com> References: <1685101741-74826-1-git-send-email-guwen@linux.alibaba.com> X-Spam-Status: No, score=-9.9 required=5.0 tests=BAYES_00, ENV_AND_HDR_SPF_MATCH,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, UNPARSEABLE_RELAY,USER_IN_DEF_SPF_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1766957391110015231?= X-GMAIL-MSGID: =?utf-8?q?1766957391110015231?= When finding the first RMB of link group, it should start from the current RMB list whose index is 0. So fix it. Fixes: b4ba4652b3f8 ("net/smc: extend LLC layer for SMC-Rv2") Signed-off-by: Wen Gu --- net/smc/smc_llc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c index a0840b8..8423e8e 100644 --- a/net/smc/smc_llc.c +++ b/net/smc/smc_llc.c @@ -578,7 +578,10 @@ static struct smc_buf_desc *smc_llc_get_next_rmb(struct smc_link_group *lgr, { struct smc_buf_desc *buf_next; - if (!buf_pos || list_is_last(&buf_pos->list, &lgr->rmbs[*buf_lst])) { + if (!buf_pos) + return _smc_llc_get_next_rmb(lgr, buf_lst); + + if (list_is_last(&buf_pos->list, &lgr->rmbs[*buf_lst])) { (*buf_lst)++; return _smc_llc_get_next_rmb(lgr, buf_lst); }