From patchwork Thu Oct 20 21:12:52 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steve Wise X-Patchwork-Id: 9387549 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E91A0607D0 for ; Thu, 20 Oct 2016 21:16:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DCA0929C2D for ; Thu, 20 Oct 2016 21:16:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D132729C5A; Thu, 20 Oct 2016 21:16:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2249B29C2D for ; Thu, 20 Oct 2016 21:16:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755035AbcJTVQy (ORCPT ); Thu, 20 Oct 2016 17:16:54 -0400 Received: from smtp.opengridcomputing.com ([72.48.136.20]:36606 "EHLO smtp.opengridcomputing.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752101AbcJTVQx (ORCPT ); Thu, 20 Oct 2016 17:16:53 -0400 Received: from smtp.ogc.us (build2.ogc.int [10.10.0.32]) by smtp.opengridcomputing.com (Postfix) with ESMTP id 6120E29E73; Thu, 20 Oct 2016 16:16:52 -0500 (CDT) Received: by smtp.ogc.us (Postfix, from userid 503) id 35902E0C53; Thu, 20 Oct 2016 16:16:52 -0500 (CDT) From: Steve Wise Date: Thu, 20 Oct 2016 14:12:52 -0700 Subject: [PATCH RFC] rdma_cm: add rdma_reject_msg() helper function To: dledford@redhat.com, sean.hefty@intel.com Cc: linux-rdma@vger.kernel.org, bart.vanassche@sandisk.com Message-Id: <20161020211652.35902E0C53@smtp.ogc.us> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP rdma_reject_msg() returns a pointer to a string message associated with the transport reject reason codes. Signed-off-by: Steve Wise --- Hey Bart, if folks like this, then perhaps you can make use of it in your nvme series. Steve. --- drivers/infiniband/core/cma.c | 64 +++++++++++++++++++++++++++++++++++++++++++ include/rdma/rdma_cm.h | 8 ++++++ 2 files changed, 72 insertions(+) diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 5f65a78..fd11821 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -101,6 +101,70 @@ const char *__attribute_const__ rdma_event_msg(enum rdma_cm_event_type event) } EXPORT_SYMBOL(rdma_event_msg); +static const char * const ib_rej_reason_strs[] = { + [IB_CM_REJ_NO_QP] = "no qp", + [IB_CM_REJ_NO_EEC] = "no eec", + [IB_CM_REJ_NO_RESOURCES] = "no resources", + [IB_CM_REJ_TIMEOUT] = "timeout", + [IB_CM_REJ_UNSUPPORTED] = "unsupported", + [IB_CM_REJ_INVALID_COMM_ID] = "invalid comm id", + [IB_CM_REJ_INVALID_COMM_INSTANCE] = "invalid comm instance", + [IB_CM_REJ_INVALID_SERVICE_ID] = "invalid service id", + [IB_CM_REJ_INVALID_TRANSPORT_TYPE] = "invalid transport type", + [IB_CM_REJ_STALE_CONN] = "stale conn", + [IB_CM_REJ_RDC_NOT_EXIST] = "rdc not exist", + [IB_CM_REJ_INVALID_GID] = "invalid gid", + [IB_CM_REJ_INVALID_LID] = "invalid lid", + [IB_CM_REJ_INVALID_SL] = "invalid sl", + [IB_CM_REJ_INVALID_TRAFFIC_CLASS] = "invalid traffic class", + [IB_CM_REJ_INVALID_HOP_LIMIT] = "invalid hop limit", + [IB_CM_REJ_INVALID_PACKET_RATE] = "invalid packet rate", + [IB_CM_REJ_INVALID_ALT_GID] = "invalid alt gid", + [IB_CM_REJ_INVALID_ALT_LID] = "invalid alt lid", + [IB_CM_REJ_INVALID_ALT_SL] = "invalid alt sl", + [IB_CM_REJ_INVALID_ALT_TRAFFIC_CLASS] = "invalid alt traffic class", + [IB_CM_REJ_INVALID_ALT_HOP_LIMIT] = "invalid alt hop limit", + [IB_CM_REJ_INVALID_ALT_PACKET_RATE] = "invalid alt packet rate", + [IB_CM_REJ_PORT_CM_REDIRECT] = "port cm redirect", + [IB_CM_REJ_PORT_REDIRECT] = "port redirect", + [IB_CM_REJ_INVALID_MTU] = "invalid mtu", + [IB_CM_REJ_INSUFFICIENT_RESP_RESOURCES] = "insufficient resp resources", + [IB_CM_REJ_CONSUMER_DEFINED] = "consumer defined", + [IB_CM_REJ_INVALID_RNR_RETRY] = "invalid rnr retry", + [IB_CM_REJ_DUPLICATE_LOCAL_COMM_ID] = "duplicate local comm id", + [IB_CM_REJ_INVALID_CLASS_VERSION] = "invalid class version", + [IB_CM_REJ_INVALID_FLOW_LABEL] = "invalid flow label", + [IB_CM_REJ_INVALID_ALT_FLOW_LABEL] = "invalid alt flow label", +}; + +static const char * const iw_rej_reason_strs[] = { + [ECONNRESET] = "reset by remote host", + [ECONNREFUSED] = "refused by remote application", + [ETIMEDOUT] = "setup timeout", +}; + +const char *__attribute_const__ rdma_reject_msg(struct rdma_cm_id *id, + int reason) +{ + size_t index = reason; + + if (rdma_ib_or_roce(id->device, id->port_num)) + return (index < ARRAY_SIZE(ib_rej_reason_strs) && + ib_rej_reason_strs[index]) ? + ib_rej_reason_strs[index] : "unrecognized reason"; + + if (rdma_protocol_iwarp(id->device, id->port_num)) { + + /* iWARP uses negative errnos */ + index = -index; + return (index < ARRAY_SIZE(iw_rej_reason_strs) && + iw_rej_reason_strs[index]) ? + iw_rej_reason_strs[index] : "unrecognized reason"; + } + return "unrecognized reason"; +} +EXPORT_SYMBOL(rdma_reject_msg); + static void cma_add_one(struct ib_device *device); static void cma_remove_one(struct ib_device *device, void *client_data); diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h index 81fb1d1..712a70c 100644 --- a/include/rdma/rdma_cm.h +++ b/include/rdma/rdma_cm.h @@ -388,4 +388,12 @@ int rdma_set_afonly(struct rdma_cm_id *id, int afonly); */ __be64 rdma_get_service_id(struct rdma_cm_id *id, struct sockaddr *addr); +/** + * rdma_reject_msg - return a pointer to a reject message string. + * @id: Communication identifier that received the REJECT event + * @reason: Value returned in the REJECT event status field. + */ +const char *__attribute_const__ rdma_reject_msg(struct rdma_cm_id *id, + int reason); + #endif /* RDMA_CM_H */