From patchwork Thu Jul 30 19:19:48 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Marciniszyn, Mike" X-Patchwork-Id: 6906341 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 5BCDC9F358 for ; Thu, 30 Jul 2015 19:20:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 61B662058A for ; Thu, 30 Jul 2015 19:19:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 150DC20458 for ; Thu, 30 Jul 2015 19:19:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753801AbbG3TTw (ORCPT ); Thu, 30 Jul 2015 15:19:52 -0400 Received: from mga11.intel.com ([192.55.52.93]:55553 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753250AbbG3TTv (ORCPT ); Thu, 30 Jul 2015 15:19:51 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP; 30 Jul 2015 12:19:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,578,1432623600"; d="scan'208";a="774734527" Received: from sedona.ch.intel.com ([143.182.228.65]) by orsmga002.jf.intel.com with ESMTP; 30 Jul 2015 12:19:49 -0700 Received: from phlsvsles11.ph.intel.com (phlsvsles11.ph.intel.com [10.228.195.43]) by sedona.ch.intel.com (8.13.6/8.14.3/Standard MailSET/Hub) with ESMTP id t6UJJmIV009142; Thu, 30 Jul 2015 12:19:48 -0700 Received: from phlsvslse11.ph.intel.com (localhost [127.0.0.1]) by phlsvsles11.ph.intel.com with ESMTP id t6UJJmDF026090; Thu, 30 Jul 2015 15:19:48 -0400 Subject: [PATCH v4 25/50] IB/hfi1: add OPA mad handling part2 To: dledford@redhat.com From: Mike Marciniszyn Cc: linux-rdma@vger.kernel.org Date: Thu, 30 Jul 2015 15:19:48 -0400 Message-ID: <20150730191947.25256.45843.stgit@phlsvslse11.ph.intel.com> In-Reply-To: <20150730191631.25256.95511.stgit@phlsvslse11.ph.intel.com> References: <20150730191631.25256.95511.stgit@phlsvslse11.ph.intel.com> User-Agent: StGit/0.16 MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-8.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Andrew Friedley Signed-off-by: Arthur Kepner Signed-off-by: Brendan Cunningham Signed-off-by: Brian Welty Signed-off-by: Caz Yokoyama Signed-off-by: Dean Luick Signed-off-by: Dennis Dalessandro Signed-off-by: Easwar Hariharan Signed-off-by: Harish Chegondi Signed-off-by: Ira Weiny Signed-off-by: Jim Snow Signed-off-by: John Gregor Signed-off-by: Jubin John Signed-off-by: Kaike Wan Signed-off-by: Kevin Pine Signed-off-by: Kyle Liddell Signed-off-by: Mike Marciniszyn Signed-off-by: Mitko Haralanov Signed-off-by: Ravi Krishnaswamy Signed-off-by: Sadanand Warrier Signed-off-by: Sanath Kumar Signed-off-by: Sudeep Dutt Signed-off-by: Vlad Danushevsky --- drivers/infiniband/hw/hfi1/mad.c | 1502 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 1501 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/infiniband/hw/hfi1/mad.c b/drivers/infiniband/hw/hfi1/mad.c index 034e284..0a18fee 100644 --- a/drivers/infiniband/hw/hfi1/mad.c +++ b/drivers/infiniband/hw/hfi1/mad.c @@ -2754,4 +2754,1504 @@ static int pma_get_opa_porterrors(struct opa_pma_mad *pmp, if (response_data_size > sizeof(pmp->data)) { pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; - return r \ No newline at end of file + return reply((struct ib_mad_hdr *)pmp); + } + /* + * The bit set in the mask needs to be consistent with the + * port the request came in on. + */ + port_mask = be64_to_cpu(req->port_select_mask[3]); + port_num = find_first_bit((unsigned long *)&port_mask, + sizeof(port_mask)); + + if ((u8)port_num != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + rsp = (struct _port_ectrs *)&(req->port[0]); + + ibp = to_iport(ibdev, port_num); + ppd = ppd_from_ibp(ibp); + + memset(rsp, 0, sizeof(*rsp)); + rsp->port_number = (u8)port_num; + + rsp->port_rcv_constraint_errors = + cpu_to_be64(read_port_cntr(ppd, C_SW_RCV_CSTR_ERR, + CNTR_INVALID_VL)); + /* port_rcv_switch_relay_errors is 0 for HFIs */ + rsp->port_xmit_discards = + cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_DSCD, + CNTR_INVALID_VL)); + rsp->port_rcv_remote_physical_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_RMT_PHY_ERR, + CNTR_INVALID_VL)); + tmp = read_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL); + tmp2 = tmp + read_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL); + if (tmp2 < tmp) { + /* overflow/wrapped */ + rsp->local_link_integrity_errors = cpu_to_be64(~0); + } else { + rsp->local_link_integrity_errors = cpu_to_be64(tmp2); + } + tmp = read_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL); + tmp2 = tmp + read_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, + CNTR_INVALID_VL); + if (tmp2 > (u32)UINT_MAX || tmp2 < tmp) { + /* overflow/wrapped */ + rsp->link_error_recovery = cpu_to_be32(~0); + } else { + rsp->link_error_recovery = cpu_to_be32(tmp2); + } + rsp->port_xmit_constraint_errors = + cpu_to_be64(read_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, + CNTR_INVALID_VL)); + rsp->excessive_buffer_overruns = + cpu_to_be64(read_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL)); + rsp->fm_config_errors = + cpu_to_be64(read_dev_cntr(dd, C_DC_FM_CFG_ERR, + CNTR_INVALID_VL)); + rsp->link_downed = cpu_to_be32(read_port_cntr(ppd, C_SW_LINK_DOWN, + CNTR_INVALID_VL)); + tmp = read_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL); + rsp->uncorrectable_errors = tmp < 0x100 ? (tmp & 0xff) : 0xff; + + vlinfo = (struct _vls_ectrs *)&(rsp->vls[0]); + vfi = 0; + vl_select_mask = be32_to_cpu(req->vl_select_mask); + for_each_set_bit(vl, (unsigned long *)&(vl_select_mask), + 8 * sizeof(req->vl_select_mask)) { + memset(vlinfo, 0, sizeof(*vlinfo)); + /* vlinfo->vls[vfi].port_vl_xmit_discards ??? */ + vlinfo += 1; + vfi++; + } + + if (resp_len) + *resp_len += response_data_size; + + return reply((struct ib_mad_hdr *)pmp); +} + +static int pma_get_opa_errorinfo(struct opa_pma_mad *pmp, + struct ib_device *ibdev, u8 port, u32 *resp_len) +{ + size_t response_data_size; + struct _port_ei *rsp; + struct opa_port_error_info_msg *req; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + u64 port_mask; + u32 num_ports; + unsigned long port_num; + u8 num_pslm; + u64 reg; + + req = (struct opa_port_error_info_msg *)pmp->data; + rsp = (struct _port_ei *)&(req->port[0]); + + num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod)); + num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3])); + + memset(rsp, 0, sizeof(*rsp)); + + if (num_ports != 1 || num_ports != num_pslm) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + /* Sanity check */ + response_data_size = sizeof(struct opa_port_error_info_msg); + + if (response_data_size > sizeof(pmp->data)) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + /* + * The bit set in the mask needs to be consistent with the port + * the request came in on. + */ + port_mask = be64_to_cpu(req->port_select_mask[3]); + port_num = find_first_bit((unsigned long *)&port_mask, + sizeof(port_mask)); + + if ((u8)port_num != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + /* PortRcvErrorInfo */ + rsp->port_rcv_ei.status_and_code = + dd->err_info_rcvport.status_and_code; + memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit1, + &dd->err_info_rcvport.packet_flit1, sizeof(u64)); + memcpy(&rsp->port_rcv_ei.ei.ei1to12.packet_flit2, + &dd->err_info_rcvport.packet_flit2, sizeof(u64)); + + /* ExcessiverBufferOverrunInfo */ + reg = read_csr(dd, RCV_ERR_INFO); + if (reg & RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK) { + /* if the RcvExcessBufferOverrun bit is set, save SC of + * first pkt that encountered an excess buffer overrun */ + u8 tmp = (u8)reg; + + tmp &= RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SC_SMASK; + tmp <<= 2; + rsp->excessive_buffer_overrun_ei.status_and_sc = tmp; + /* set the status bit */ + rsp->excessive_buffer_overrun_ei.status_and_sc |= 0x80; + } + + rsp->port_xmit_constraint_ei.status = + dd->err_info_xmit_constraint.status; + rsp->port_xmit_constraint_ei.pkey = + cpu_to_be16(dd->err_info_xmit_constraint.pkey); + rsp->port_xmit_constraint_ei.slid = + cpu_to_be32(dd->err_info_xmit_constraint.slid); + + rsp->port_rcv_constraint_ei.status = + dd->err_info_rcv_constraint.status; + rsp->port_rcv_constraint_ei.pkey = + cpu_to_be16(dd->err_info_rcv_constraint.pkey); + rsp->port_rcv_constraint_ei.slid = + cpu_to_be32(dd->err_info_rcv_constraint.slid); + + /* UncorrectableErrorInfo */ + rsp->uncorrectable_ei.status_and_code = dd->err_info_uncorrectable; + + /* FMConfigErrorInfo */ + rsp->fm_config_ei.status_and_code = dd->err_info_fmconfig; + + if (resp_len) + *resp_len += response_data_size; + + return reply((struct ib_mad_hdr *)pmp); +} + +static int pma_set_opa_portstatus(struct opa_pma_mad *pmp, + struct ib_device *ibdev, u8 port, u32 *resp_len) +{ + struct opa_clear_port_status *req = + (struct opa_clear_port_status *)pmp->data; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + u32 nports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24; + u64 portn = be64_to_cpu(req->port_select_mask[3]); + u32 counter_select = be32_to_cpu(req->counter_select_mask); + u32 vl_select_mask = VL_MASK_ALL; /* clear all per-vl cnts */ + unsigned long vl; + + if ((nports != 1) || (portn != 1 << port)) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + /* + * only counters returned by pma_get_opa_portstatus() are + * handled, so when pma_get_opa_portstatus() gets a fix, + * the corresponding change should be made here as well. + */ + + if (counter_select & CS_PORT_XMIT_DATA) + write_dev_cntr(dd, C_DC_XMIT_FLITS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_RCV_DATA) + write_dev_cntr(dd, C_DC_RCV_FLITS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_XMIT_PKTS) + write_dev_cntr(dd, C_DC_XMIT_PKTS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_RCV_PKTS) + write_dev_cntr(dd, C_DC_RCV_PKTS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_MCAST_XMIT_PKTS) + write_dev_cntr(dd, C_DC_MC_XMIT_PKTS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_MCAST_RCV_PKTS) + write_dev_cntr(dd, C_DC_MC_RCV_PKTS, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_XMIT_WAIT) + write_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL, 0); + + /* ignore cs_sw_portCongestion for HFIs */ + + if (counter_select & CS_PORT_RCV_FECN) + write_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_RCV_BECN) + write_dev_cntr(dd, C_DC_RCV_BCN, CNTR_INVALID_VL, 0); + + /* ignore cs_port_xmit_time_cong for HFIs */ + /* ignore cs_port_xmit_wasted_bw for now */ + /* ignore cs_port_xmit_wait_data for now */ + if (counter_select & CS_PORT_RCV_BUBBLE) + write_dev_cntr(dd, C_DC_RCV_BBL, CNTR_INVALID_VL, 0); + + /* Only applicable for switch */ + /*if (counter_select & CS_PORT_MARK_FECN) + write_csr(dd, DCC_PRF_PORT_MARK_FECN_CNT, 0);*/ + + if (counter_select & CS_PORT_RCV_CONSTRAINT_ERRORS) + write_port_cntr(ppd, C_SW_RCV_CSTR_ERR, CNTR_INVALID_VL, 0); + + /* ignore cs_port_rcv_switch_relay_errors for HFIs */ + if (counter_select & CS_PORT_XMIT_DISCARDS) + write_port_cntr(ppd, C_SW_XMIT_DSCD, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_XMIT_CONSTRAINT_ERRORS) + write_port_cntr(ppd, C_SW_XMIT_CSTR_ERR, CNTR_INVALID_VL, 0); + + if (counter_select & CS_PORT_RCV_REMOTE_PHYSICAL_ERRORS) + write_dev_cntr(dd, C_DC_RMT_PHY_ERR, CNTR_INVALID_VL, 0); + + if (counter_select & CS_LOCAL_LINK_INTEGRITY_ERRORS) { + write_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL, 0); + write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0); + } + + if (counter_select & CS_LINK_ERROR_RECOVERY) { + write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0); + write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, + CNTR_INVALID_VL, 0); + } + + if (counter_select & CS_PORT_RCV_ERRORS) + write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0); + + if (counter_select & CS_EXCESSIVE_BUFFER_OVERRUNS) { + write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0); + dd->rcv_ovfl_cnt = 0; + } + + if (counter_select & CS_FM_CONFIG_ERRORS) + write_dev_cntr(dd, C_DC_FM_CFG_ERR, CNTR_INVALID_VL, 0); + + if (counter_select & CS_LINK_DOWNED) + write_port_cntr(ppd, C_SW_LINK_DOWN, CNTR_INVALID_VL, 0); + + if (counter_select & CS_UNCORRECTABLE_ERRORS) + write_dev_cntr(dd, C_DC_UNC_ERR, CNTR_INVALID_VL, 0); + + for_each_set_bit(vl, (unsigned long *)&(vl_select_mask), + 8 * sizeof(vl_select_mask)) { + + if (counter_select & CS_PORT_XMIT_DATA) + write_port_cntr(ppd, C_TX_FLIT_VL, idx_from_vl(vl), 0); + + if (counter_select & CS_PORT_RCV_DATA) + write_dev_cntr(dd, C_DC_RX_FLIT_VL, idx_from_vl(vl), 0); + + if (counter_select & CS_PORT_XMIT_PKTS) + write_port_cntr(ppd, C_TX_PKT_VL, idx_from_vl(vl), 0); + + if (counter_select & CS_PORT_RCV_PKTS) + write_dev_cntr(dd, C_DC_RX_PKT_VL, idx_from_vl(vl), 0); + + if (counter_select & CS_PORT_XMIT_WAIT) + write_port_cntr(ppd, C_TX_WAIT_VL, idx_from_vl(vl), 0); + + /* sw_port_vl_congestion is 0 for HFIs */ + if (counter_select & CS_PORT_RCV_FECN) + write_dev_cntr(dd, C_DC_RCV_FCN_VL, idx_from_vl(vl), 0); + + if (counter_select & CS_PORT_RCV_BECN) + write_dev_cntr(dd, C_DC_RCV_BCN_VL, idx_from_vl(vl), 0); + + /* port_vl_xmit_time_cong is 0 for HFIs */ + /* port_vl_xmit_wasted_bw ??? */ + /* port_vl_xmit_wait_data - TXE (table 13-9 HFI spec) ??? */ + if (counter_select & CS_PORT_RCV_BUBBLE) + write_dev_cntr(dd, C_DC_RCV_BBL_VL, idx_from_vl(vl), 0); + + /*if (counter_select & CS_PORT_MARK_FECN) + write_csr(dd, DCC_PRF_PORT_VL_MARK_FECN_CNT + offset, 0); + */ + /* port_vl_xmit_discards ??? */ + } + + if (resp_len) + *resp_len += sizeof(*req); + + return reply((struct ib_mad_hdr *)pmp); +} + +static int pma_set_opa_errorinfo(struct opa_pma_mad *pmp, + struct ib_device *ibdev, u8 port, u32 *resp_len) +{ + struct _port_ei *rsp; + struct opa_port_error_info_msg *req; + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + u64 port_mask; + u32 num_ports; + unsigned long port_num; + u8 num_pslm; + u32 error_info_select; + + req = (struct opa_port_error_info_msg *)pmp->data; + rsp = (struct _port_ei *)&(req->port[0]); + + num_ports = OPA_AM_NPORT(be32_to_cpu(pmp->mad_hdr.attr_mod)); + num_pslm = hweight64(be64_to_cpu(req->port_select_mask[3])); + + memset(rsp, 0, sizeof(*rsp)); + + if (num_ports != 1 || num_ports != num_pslm) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + /* + * The bit set in the mask needs to be consistent with the port + * the request came in on. + */ + port_mask = be64_to_cpu(req->port_select_mask[3]); + port_num = find_first_bit((unsigned long *)&port_mask, + sizeof(port_mask)); + + if ((u8)port_num != port) { + pmp->mad_hdr.status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)pmp); + } + + error_info_select = be32_to_cpu(req->error_info_select_mask); + + /* PortRcvErrorInfo */ + if (error_info_select & ES_PORT_RCV_ERROR_INFO) + /* turn off status bit */ + dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK; + + /* ExcessiverBufferOverrunInfo */ + if (error_info_select & ES_EXCESSIVE_BUFFER_OVERRUN_INFO) + /* status bit is essentially kept in the h/w - bit 5 of + * RCV_ERR_INFO */ + write_csr(dd, RCV_ERR_INFO, + RCV_ERR_INFO_RCV_EXCESS_BUFFER_OVERRUN_SMASK); + + if (error_info_select & ES_PORT_XMIT_CONSTRAINT_ERROR_INFO) + dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK; + + if (error_info_select & ES_PORT_RCV_CONSTRAINT_ERROR_INFO) + dd->err_info_rcv_constraint.status &= ~OPA_EI_STATUS_SMASK; + + /* UncorrectableErrorInfo */ + if (error_info_select & ES_UNCORRECTABLE_ERROR_INFO) + /* turn off status bit */ + dd->err_info_uncorrectable &= ~OPA_EI_STATUS_SMASK; + + /* FMConfigErrorInfo */ + if (error_info_select & ES_FM_CONFIG_ERROR_INFO) + /* turn off status bit */ + dd->err_info_fmconfig &= ~OPA_EI_STATUS_SMASK; + + if (resp_len) + *resp_len += sizeof(*req); + + return reply((struct ib_mad_hdr *)pmp); +} + +struct opa_congestion_info_attr { + __be16 congestion_info; + u8 control_table_cap; /* Multiple of 64 entry unit CCTs */ + u8 congestion_log_length; +} __packed; + +static int __subn_get_opa_cong_info(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + struct opa_congestion_info_attr *p = + (struct opa_congestion_info_attr *)data; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + + p->congestion_info = 0; + p->control_table_cap = ppd->cc_max_table_entries; + p->congestion_log_length = OPA_CONG_LOG_ELEMS; + + if (resp_len) + *resp_len += sizeof(*p); + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_get_opa_cong_setting(struct opa_smp *smp, u32 am, + u8 *data, + struct ib_device *ibdev, + u8 port, u32 *resp_len) +{ + int i; + struct opa_congestion_setting_attr *p = + (struct opa_congestion_setting_attr *) data; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + struct opa_congestion_setting_entry_shadow *entries; + struct cc_state *cc_state; + + rcu_read_lock(); + + cc_state = get_cc_state(ppd); + + if (cc_state == NULL) { + rcu_read_unlock(); + return reply((struct ib_mad_hdr *)smp); + } + + entries = cc_state->cong_setting.entries; + p->port_control = cpu_to_be16(cc_state->cong_setting.port_control); + p->control_map = cpu_to_be32(cc_state->cong_setting.control_map); + for (i = 0; i < OPA_MAX_SLS; i++) { + p->entries[i].ccti_increase = entries[i].ccti_increase; + p->entries[i].ccti_timer = cpu_to_be16(entries[i].ccti_timer); + p->entries[i].trigger_threshold = + entries[i].trigger_threshold; + p->entries[i].ccti_min = entries[i].ccti_min; + } + + rcu_read_unlock(); + + if (resp_len) + *resp_len += sizeof(*p); + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_cong_setting(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + struct opa_congestion_setting_attr *p = + (struct opa_congestion_setting_attr *) data; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + struct opa_congestion_setting_entry_shadow *entries; + int i; + + ppd->cc_sl_control_map = be32_to_cpu(p->control_map); + + entries = ppd->congestion_entries; + for (i = 0; i < OPA_MAX_SLS; i++) { + entries[i].ccti_increase = p->entries[i].ccti_increase; + entries[i].ccti_timer = be16_to_cpu(p->entries[i].ccti_timer); + entries[i].trigger_threshold = + p->entries[i].trigger_threshold; + entries[i].ccti_min = p->entries[i].ccti_min; + } + + return __subn_get_opa_cong_setting(smp, am, data, ibdev, port, + resp_len); +} + +static int __subn_get_opa_hfi1_cong_log(struct opa_smp *smp, u32 am, + u8 *data, struct ib_device *ibdev, + u8 port, u32 *resp_len) +{ + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + struct opa_hfi1_cong_log *cong_log = (struct opa_hfi1_cong_log *)data; + s64 ts; + int i; + + if (am != 0) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + spin_lock(&ppd->cc_log_lock); + + cong_log->log_type = OPA_CC_LOG_TYPE_HFI; + cong_log->congestion_flags = 0; + cong_log->threshold_event_counter = + cpu_to_be16(ppd->threshold_event_counter); + memcpy(cong_log->threshold_cong_event_map, + ppd->threshold_cong_event_map, + sizeof(cong_log->threshold_cong_event_map)); + /* keep timestamp in units of 1.024 usec */ + ts = ktime_to_ns(ktime_get()) / 1024; + cong_log->current_time_stamp = cpu_to_be32(ts); + for (i = 0; i < OPA_CONG_LOG_ELEMS; i++) { + struct opa_hfi1_cong_log_event_internal *cce = + &ppd->cc_events[ppd->cc_mad_idx++]; + if (ppd->cc_mad_idx == OPA_CONG_LOG_ELEMS) + ppd->cc_mad_idx = 0; + /* + * Entries which are older than twice the time + * required to wrap the counter are supposed to + * be zeroed (CA10-49 IBTA, release 1.2.1, V1). + */ + if ((u64)(ts - cce->timestamp) > (2 * UINT_MAX)) + continue; + memcpy(cong_log->events[i].local_qp_cn_entry, &cce->lqpn, 3); + memcpy(cong_log->events[i].remote_qp_number_cn_entry, + &cce->rqpn, 3); + cong_log->events[i].sl_svc_type_cn_entry = + ((cce->sl & 0x1f) << 3) | (cce->svc_type & 0x7); + cong_log->events[i].remote_lid_cn_entry = + cpu_to_be32(cce->rlid); + cong_log->events[i].timestamp_cn_entry = + cpu_to_be32(cce->timestamp); + } + + /* + * Reset threshold_cong_event_map, and threshold_event_counter + * to 0 when log is read. + */ + memset(ppd->threshold_cong_event_map, 0x0, + sizeof(ppd->threshold_cong_event_map)); + ppd->threshold_event_counter = 0; + + spin_unlock(&ppd->cc_log_lock); + + if (resp_len) + *resp_len += sizeof(struct opa_hfi1_cong_log); + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_get_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + struct ib_cc_table_attr *cc_table_attr = + (struct ib_cc_table_attr *) data; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + u32 start_block = OPA_AM_START_BLK(am); + u32 n_blocks = OPA_AM_NBLK(am); + struct ib_cc_table_entry_shadow *entries; + int i, j; + u32 sentry, eentry; + struct cc_state *cc_state; + + /* sanity check n_blocks, start_block */ + if (n_blocks == 0 || + start_block + n_blocks > ppd->cc_max_table_entries) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + rcu_read_lock(); + + cc_state = get_cc_state(ppd); + + if (cc_state == NULL) { + rcu_read_unlock(); + return reply((struct ib_mad_hdr *)smp); + } + + sentry = start_block * IB_CCT_ENTRIES; + eentry = sentry + (IB_CCT_ENTRIES * n_blocks); + + cc_table_attr->ccti_limit = cpu_to_be16(cc_state->cct.ccti_limit); + + entries = cc_state->cct.entries; + + /* return n_blocks, though the last block may not be full */ + for (j = 0, i = sentry; i < eentry; j++, i++) + cc_table_attr->ccti_entries[j].entry = + cpu_to_be16(entries[i].entry); + + rcu_read_unlock(); + + if (resp_len) + *resp_len += sizeof(u16)*(IB_CCT_ENTRIES * n_blocks + 1); + + return reply((struct ib_mad_hdr *)smp); +} + +void cc_state_reclaim(struct rcu_head *rcu) +{ + struct cc_state *cc_state = container_of(rcu, struct cc_state, rcu); + + kfree(cc_state); +} + +static int __subn_set_opa_cc_table(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + struct ib_cc_table_attr *p = (struct ib_cc_table_attr *) data; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + u32 start_block = OPA_AM_START_BLK(am); + u32 n_blocks = OPA_AM_NBLK(am); + struct ib_cc_table_entry_shadow *entries; + int i, j; + u32 sentry, eentry; + u16 ccti_limit; + struct cc_state *old_cc_state, *new_cc_state; + + /* sanity check n_blocks, start_block */ + if (n_blocks == 0 || + start_block + n_blocks > ppd->cc_max_table_entries) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + sentry = start_block * IB_CCT_ENTRIES; + eentry = sentry + ((n_blocks - 1) * IB_CCT_ENTRIES) + + (be16_to_cpu(p->ccti_limit)) % IB_CCT_ENTRIES + 1; + + /* sanity check ccti_limit */ + ccti_limit = be16_to_cpu(p->ccti_limit); + if (ccti_limit + 1 > eentry) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + new_cc_state = kzalloc(sizeof(*new_cc_state), GFP_KERNEL); + if (new_cc_state == NULL) + goto getit; + + spin_lock(&ppd->cc_state_lock); + + old_cc_state = get_cc_state(ppd); + + if (old_cc_state == NULL) { + spin_unlock(&ppd->cc_state_lock); + kfree(new_cc_state); + return reply((struct ib_mad_hdr *)smp); + } + + *new_cc_state = *old_cc_state; + + new_cc_state->cct.ccti_limit = ccti_limit; + + entries = ppd->ccti_entries; + ppd->total_cct_entry = ccti_limit + 1; + + for (j = 0, i = sentry; i < eentry; j++, i++) + entries[i].entry = be16_to_cpu(p->ccti_entries[j].entry); + + memcpy(new_cc_state->cct.entries, entries, + eentry * sizeof(struct ib_cc_table_entry)); + + new_cc_state->cong_setting.port_control = IB_CC_CCS_PC_SL_BASED; + new_cc_state->cong_setting.control_map = ppd->cc_sl_control_map; + memcpy(new_cc_state->cong_setting.entries, ppd->congestion_entries, + OPA_MAX_SLS * sizeof(struct opa_congestion_setting_entry)); + + rcu_assign_pointer(ppd->cc_state, new_cc_state); + + spin_unlock(&ppd->cc_state_lock); + + call_rcu(&old_cc_state->rcu, cc_state_reclaim); + +getit: + return __subn_get_opa_cc_table(smp, am, data, ibdev, port, resp_len); +} + +struct opa_led_info { + __be32 rsvd_led_mask; + __be32 rsvd; +}; + +#define OPA_LED_SHIFT 31 +#define OPA_LED_MASK (1 << OPA_LED_SHIFT) + +static int __subn_get_opa_led_info(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct opa_led_info *p = (struct opa_led_info *) data; + u32 nport = OPA_AM_NPORT(am); + u64 reg; + + if (nport != 1 || OPA_AM_PORTNUM(am)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + reg = read_csr(dd, DCC_CFG_LED_CNTRL); + if ((reg & DCC_CFG_LED_CNTRL_LED_CNTRL_SMASK) && + ((reg & DCC_CFG_LED_CNTRL_LED_SW_BLINK_RATE_SMASK) == 0xf)) + p->rsvd_led_mask = cpu_to_be32(OPA_LED_MASK); + + if (resp_len) + *resp_len += sizeof(struct opa_led_info); + + return reply((struct ib_mad_hdr *)smp); +} + +static int __subn_set_opa_led_info(struct opa_smp *smp, u32 am, u8 *data, + struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + struct hfi1_devdata *dd = dd_from_ibdev(ibdev); + struct opa_led_info *p = (struct opa_led_info *) data; + u32 nport = OPA_AM_NPORT(am); + int on = !!(be32_to_cpu(p->rsvd_led_mask) & OPA_LED_MASK); + + if (nport != 1 || OPA_AM_PORTNUM(am)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + setextled(dd, on); + + return __subn_get_opa_led_info(smp, am, data, ibdev, port, resp_len); +} + +static int subn_get_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am, + u8 *data, struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + int ret; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + + switch (attr_id) { + case IB_SMP_ATTR_NODE_DESC: + ret = __subn_get_opa_nodedesc(smp, am, data, ibdev, port, + resp_len); + break; + case IB_SMP_ATTR_NODE_INFO: + ret = __subn_get_opa_nodeinfo(smp, am, data, ibdev, port, + resp_len); + break; + case IB_SMP_ATTR_PORT_INFO: + ret = __subn_get_opa_portinfo(smp, am, data, ibdev, port, + resp_len); + break; + case IB_SMP_ATTR_PKEY_TABLE: + ret = __subn_get_opa_pkeytable(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_SL_TO_SC_MAP: + ret = __subn_get_opa_sl_to_sc(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_SC_TO_SL_MAP: + ret = __subn_get_opa_sc_to_sl(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_SC_TO_VLT_MAP: + ret = __subn_get_opa_sc_to_vlt(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_SC_TO_VLNT_MAP: + ret = __subn_get_opa_sc_to_vlnt(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_PORT_STATE_INFO: + ret = __subn_get_opa_psi(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE: + ret = __subn_get_opa_bct(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_CABLE_INFO: + ret = __subn_get_opa_cable_info(smp, am, data, ibdev, port, + resp_len); + break; + case IB_SMP_ATTR_VL_ARB_TABLE: + ret = __subn_get_opa_vl_arb(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_CONGESTION_INFO: + ret = __subn_get_opa_cong_info(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING: + ret = __subn_get_opa_cong_setting(smp, am, data, ibdev, + port, resp_len); + break; + case OPA_ATTRIB_ID_HFI_CONGESTION_LOG: + ret = __subn_get_opa_hfi1_cong_log(smp, am, data, ibdev, + port, resp_len); + break; + case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE: + ret = __subn_get_opa_cc_table(smp, am, data, ibdev, port, + resp_len); + break; + case IB_SMP_ATTR_LED_INFO: + ret = __subn_get_opa_led_info(smp, am, data, ibdev, port, + resp_len); + break; + case IB_SMP_ATTR_SM_INFO: + if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; + if (ibp->port_cap_flags & IB_PORT_SM) + return IB_MAD_RESULT_SUCCESS; + /* FALLTHROUGH */ + default: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)smp); + break; + } + return ret; +} + +static int subn_set_opa_sma(__be16 attr_id, struct opa_smp *smp, u32 am, + u8 *data, struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + int ret; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + + switch (attr_id) { + case IB_SMP_ATTR_PORT_INFO: + ret = __subn_set_opa_portinfo(smp, am, data, ibdev, port, + resp_len); + break; + case IB_SMP_ATTR_PKEY_TABLE: + ret = __subn_set_opa_pkeytable(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_SL_TO_SC_MAP: + ret = __subn_set_opa_sl_to_sc(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_SC_TO_SL_MAP: + ret = __subn_set_opa_sc_to_sl(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_SC_TO_VLT_MAP: + ret = __subn_set_opa_sc_to_vlt(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_SC_TO_VLNT_MAP: + ret = __subn_set_opa_sc_to_vlnt(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_PORT_STATE_INFO: + ret = __subn_set_opa_psi(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_BUFFER_CONTROL_TABLE: + ret = __subn_set_opa_bct(smp, am, data, ibdev, port, + resp_len); + break; + case IB_SMP_ATTR_VL_ARB_TABLE: + ret = __subn_set_opa_vl_arb(smp, am, data, ibdev, port, + resp_len); + break; + case OPA_ATTRIB_ID_HFI_CONGESTION_SETTING: + ret = __subn_set_opa_cong_setting(smp, am, data, ibdev, + port, resp_len); + break; + case OPA_ATTRIB_ID_CONGESTION_CONTROL_TABLE: + ret = __subn_set_opa_cc_table(smp, am, data, ibdev, port, + resp_len); + break; + case IB_SMP_ATTR_LED_INFO: + ret = __subn_set_opa_led_info(smp, am, data, ibdev, port, + resp_len); + break; + case IB_SMP_ATTR_SM_INFO: + if (ibp->port_cap_flags & IB_PORT_SM_DISABLED) + return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED; + if (ibp->port_cap_flags & IB_PORT_SM) + return IB_MAD_RESULT_SUCCESS; + /* FALLTHROUGH */ + default: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)smp); + break; + } + return ret; +} + +static inline void set_aggr_error(struct opa_aggregate *ag) +{ + ag->err_reqlength |= cpu_to_be16(0x8000); +} + +static int subn_get_opa_aggregate(struct opa_smp *smp, + struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + int i; + u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff; + u8 *next_smp = opa_get_smp_data(smp); + + if (num_attr < 1 || num_attr > 117) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + for (i = 0; i < num_attr; i++) { + struct opa_aggregate *agg; + size_t agg_data_len; + size_t agg_size; + u32 am; + + agg = (struct opa_aggregate *)next_smp; + agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8; + agg_size = sizeof(*agg) + agg_data_len; + am = be32_to_cpu(agg->attr_mod); + + *resp_len += agg_size; + + if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + /* zero the payload for this segment */ + memset(next_smp + sizeof(*agg), 0, agg_data_len); + + (void) subn_get_opa_sma(agg->attr_id, smp, am, agg->data, + ibdev, port, NULL); + if (smp->status & ~IB_SMP_DIRECTION) { + set_aggr_error(agg); + return reply((struct ib_mad_hdr *)smp); + } + next_smp += agg_size; + + } + + return reply((struct ib_mad_hdr *)smp); +} + +static int subn_set_opa_aggregate(struct opa_smp *smp, + struct ib_device *ibdev, u8 port, + u32 *resp_len) +{ + int i; + u32 num_attr = be32_to_cpu(smp->attr_mod) & 0x000000ff; + u8 *next_smp = opa_get_smp_data(smp); + + if (num_attr < 1 || num_attr > 117) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + for (i = 0; i < num_attr; i++) { + struct opa_aggregate *agg; + size_t agg_data_len; + size_t agg_size; + u32 am; + + agg = (struct opa_aggregate *)next_smp; + agg_data_len = (be16_to_cpu(agg->err_reqlength) & 0x007f) * 8; + agg_size = sizeof(*agg) + agg_data_len; + am = be32_to_cpu(agg->attr_mod); + + *resp_len += agg_size; + + if (next_smp + agg_size > ((u8 *)smp) + sizeof(*smp)) { + smp->status |= IB_SMP_INVALID_FIELD; + return reply((struct ib_mad_hdr *)smp); + } + + (void) subn_set_opa_sma(agg->attr_id, smp, am, agg->data, + ibdev, port, NULL); + if (smp->status & ~IB_SMP_DIRECTION) { + set_aggr_error(agg); + return reply((struct ib_mad_hdr *)smp); + } + next_smp += agg_size; + + } + + return reply((struct ib_mad_hdr *)smp); +} + +/* + * OPAv1 specifies that, on the transition to link up, these counters + * are cleared: + * PortRcvErrors [*] + * LinkErrorRecovery + * LocalLinkIntegrityErrors + * ExcessiveBufferOverruns [*] + * + * [*] Error info associated with these counters is retained, but the + * error info status is reset to 0. + */ +void clear_linkup_counters(struct hfi1_devdata *dd) +{ + /* PortRcvErrors */ + write_dev_cntr(dd, C_DC_RCV_ERR, CNTR_INVALID_VL, 0); + dd->err_info_rcvport.status_and_code &= ~OPA_EI_STATUS_SMASK; + /* LinkErrorRecovery */ + write_dev_cntr(dd, C_DC_SEQ_CRC_CNT, CNTR_INVALID_VL, 0); + write_dev_cntr(dd, C_DC_REINIT_FROM_PEER_CNT, CNTR_INVALID_VL, 0); + /* LocalLinkIntegrityErrors */ + write_dev_cntr(dd, C_DC_TX_REPLAY, CNTR_INVALID_VL, 0); + write_dev_cntr(dd, C_DC_RX_REPLAY, CNTR_INVALID_VL, 0); + /* ExcessiveBufferOverruns */ + write_dev_cntr(dd, C_RCV_OVF, CNTR_INVALID_VL, 0); + dd->rcv_ovfl_cnt = 0; + dd->err_info_xmit_constraint.status &= ~OPA_EI_STATUS_SMASK; +} + +/* + * is_local_mad() returns 1 if 'mad' is sent from, and destined to the + * local node, 0 otherwise. + */ +static int is_local_mad(struct hfi1_ibport *ibp, const struct opa_mad *mad, + const struct ib_wc *in_wc) +{ + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + const struct opa_smp *smp = (const struct opa_smp *)mad; + + if (smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { + return (smp->hop_cnt == 0 && + smp->route.dr.dr_slid == OPA_LID_PERMISSIVE && + smp->route.dr.dr_dlid == OPA_LID_PERMISSIVE); + } + + return (in_wc->slid == ppd->lid); +} + +/* + * opa_local_smp_check() should only be called on MADs for which + * is_local_mad() returns true. It applies the SMP checks that are + * specific to SMPs which are sent from, and destined to this node. + * opa_local_smp_check() returns 0 if the SMP passes its checks, 1 + * otherwise. + * + * SMPs which arrive from other nodes are instead checked by + * opa_smp_check(). + */ +static int opa_local_smp_check(struct hfi1_ibport *ibp, + const struct ib_wc *in_wc) +{ + struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); + u16 slid = in_wc->slid; + u16 pkey; + + if (in_wc->pkey_index >= ARRAY_SIZE(ppd->pkeys)) + return 1; + + pkey = ppd->pkeys[in_wc->pkey_index]; + /* + * We need to do the "node-local" checks specified in OPAv1, + * rev 0.90, section 9.10.26, which are: + * - pkey is 0x7fff, or 0xffff + * - Source QPN == 0 || Destination QPN == 0 + * - the MAD header's management class is either + * IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE or + * IB_MGMT_CLASS_SUBN_LID_ROUTED + * - SLID != 0 + * + * However, we know (and so don't need to check again) that, + * for local SMPs, the MAD stack passes MADs with: + * - Source QPN of 0 + * - MAD mgmt_class is IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE + * - SLID is either: OPA_LID_PERMISSIVE (0xFFFFFFFF), or + * our own port's lid + * + */ + if (pkey == LIM_MGMT_P_KEY || pkey == FULL_MGMT_P_KEY) + return 0; + ingress_pkey_table_fail(ppd, pkey, slid); + return 1; +} + +static int process_subn_opa(struct ib_device *ibdev, int mad_flags, + u8 port, const struct opa_mad *in_mad, + struct opa_mad *out_mad, + u32 *resp_len) +{ + struct opa_smp *smp = (struct opa_smp *)out_mad; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + u8 *data; + u32 am; + __be16 attr_id; + int ret; + + *out_mad = *in_mad; + data = opa_get_smp_data(smp); + + am = be32_to_cpu(smp->attr_mod); + attr_id = smp->attr_id; + if (smp->class_version != OPA_SMI_CLASS_VERSION) { + smp->status |= IB_SMP_UNSUP_VERSION; + ret = reply((struct ib_mad_hdr *)smp); + goto bail; + } + ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags, smp->mkey, + smp->route.dr.dr_slid, smp->route.dr.return_path, + smp->hop_cnt); + if (ret) { + u32 port_num = be32_to_cpu(smp->attr_mod); + + /* + * If this is a get/set portinfo, we already check the + * M_Key if the MAD is for another port and the M_Key + * is OK on the receiving port. This check is needed + * to increment the error counters when the M_Key + * fails to match on *both* ports. + */ + if (attr_id == IB_SMP_ATTR_PORT_INFO && + (smp->method == IB_MGMT_METHOD_GET || + smp->method == IB_MGMT_METHOD_SET) && + port_num && port_num <= ibdev->phys_port_cnt && + port != port_num) + (void) check_mkey(to_iport(ibdev, port_num), + (struct ib_mad_hdr *)smp, 0, + smp->mkey, smp->route.dr.dr_slid, + smp->route.dr.return_path, + smp->hop_cnt); + ret = IB_MAD_RESULT_FAILURE; + goto bail; + } + + *resp_len = opa_get_smp_header_size(smp); + + switch (smp->method) { + case IB_MGMT_METHOD_GET: + switch (attr_id) { + default: + clear_opa_smp_data(smp); + ret = subn_get_opa_sma(attr_id, smp, am, data, + ibdev, port, resp_len); + goto bail; + case OPA_ATTRIB_ID_AGGREGATE: + ret = subn_get_opa_aggregate(smp, ibdev, port, + resp_len); + goto bail; + } + case IB_MGMT_METHOD_SET: + switch (attr_id) { + default: + ret = subn_set_opa_sma(attr_id, smp, am, data, + ibdev, port, resp_len); + goto bail; + case OPA_ATTRIB_ID_AGGREGATE: + ret = subn_set_opa_aggregate(smp, ibdev, port, + resp_len); + goto bail; + } + case IB_MGMT_METHOD_TRAP: + case IB_MGMT_METHOD_REPORT: + case IB_MGMT_METHOD_REPORT_RESP: + case IB_MGMT_METHOD_GET_RESP: + /* + * The ib_mad module will call us to process responses + * before checking for other consumers. + * Just tell the caller to process it normally. + */ + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + default: + smp->status |= IB_SMP_UNSUP_METHOD; + ret = reply((struct ib_mad_hdr *)smp); + } + +bail: + return ret; +} + +static int process_subn(struct ib_device *ibdev, int mad_flags, + u8 port, const struct ib_mad *in_mad, + struct ib_mad *out_mad) +{ + struct ib_smp *smp = (struct ib_smp *)out_mad; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + int ret; + + *out_mad = *in_mad; + if (smp->class_version != 1) { + smp->status |= IB_SMP_UNSUP_VERSION; + ret = reply((struct ib_mad_hdr *)smp); + goto bail; + } + + ret = check_mkey(ibp, (struct ib_mad_hdr *)smp, mad_flags, + smp->mkey, (__force __be32)smp->dr_slid, + smp->return_path, smp->hop_cnt); + if (ret) { + u32 port_num = be32_to_cpu(smp->attr_mod); + + /* + * If this is a get/set portinfo, we already check the + * M_Key if the MAD is for another port and the M_Key + * is OK on the receiving port. This check is needed + * to increment the error counters when the M_Key + * fails to match on *both* ports. + */ + if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO && + (smp->method == IB_MGMT_METHOD_GET || + smp->method == IB_MGMT_METHOD_SET) && + port_num && port_num <= ibdev->phys_port_cnt && + port != port_num) + (void) check_mkey(to_iport(ibdev, port_num), + (struct ib_mad_hdr *)smp, 0, + smp->mkey, + (__force __be32)smp->dr_slid, + smp->return_path, smp->hop_cnt); + ret = IB_MAD_RESULT_FAILURE; + goto bail; + } + + switch (smp->method) { + case IB_MGMT_METHOD_GET: + switch (smp->attr_id) { + case IB_SMP_ATTR_NODE_INFO: + ret = subn_get_nodeinfo(smp, ibdev, port); + goto bail; + default: + smp->status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)smp); + goto bail; + } + } + +bail: + return ret; +} + +static int process_perf_opa(struct ib_device *ibdev, u8 port, + const struct opa_mad *in_mad, + struct opa_mad *out_mad, u32 *resp_len) +{ + struct opa_pma_mad *pmp = (struct opa_pma_mad *)out_mad; + int ret; + + *out_mad = *in_mad; + + if (pmp->mad_hdr.class_version != OPA_SMI_CLASS_VERSION) { + pmp->mad_hdr.status |= IB_SMP_UNSUP_VERSION; + return reply((struct ib_mad_hdr *)pmp); + } + + *resp_len = sizeof(pmp->mad_hdr); + + switch (pmp->mad_hdr.method) { + case IB_MGMT_METHOD_GET: + switch (pmp->mad_hdr.attr_id) { + case IB_PMA_CLASS_PORT_INFO: + ret = pma_get_opa_classportinfo(pmp, ibdev, resp_len); + goto bail; + case OPA_PM_ATTRIB_ID_PORT_STATUS: + ret = pma_get_opa_portstatus(pmp, ibdev, port, + resp_len); + goto bail; + case OPA_PM_ATTRIB_ID_DATA_PORT_COUNTERS: + ret = pma_get_opa_datacounters(pmp, ibdev, port, + resp_len); + goto bail; + case OPA_PM_ATTRIB_ID_ERROR_PORT_COUNTERS: + ret = pma_get_opa_porterrors(pmp, ibdev, port, + resp_len); + goto bail; + case OPA_PM_ATTRIB_ID_ERROR_INFO: + ret = pma_get_opa_errorinfo(pmp, ibdev, port, + resp_len); + goto bail; + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)pmp); + goto bail; + } + + case IB_MGMT_METHOD_SET: + switch (pmp->mad_hdr.attr_id) { + case OPA_PM_ATTRIB_ID_CLEAR_PORT_STATUS: + ret = pma_set_opa_portstatus(pmp, ibdev, port, + resp_len); + goto bail; + case OPA_PM_ATTRIB_ID_ERROR_INFO: + ret = pma_set_opa_errorinfo(pmp, ibdev, port, + resp_len); + goto bail; + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METH_ATTR; + ret = reply((struct ib_mad_hdr *)pmp); + goto bail; + } + + case IB_MGMT_METHOD_TRAP: + case IB_MGMT_METHOD_GET_RESP: + /* + * The ib_mad module will call us to process responses + * before checking for other consumers. + * Just tell the caller to process it normally. + */ + ret = IB_MAD_RESULT_SUCCESS; + goto bail; + + default: + pmp->mad_hdr.status |= IB_SMP_UNSUP_METHOD; + ret = reply((struct ib_mad_hdr *)pmp); + } + +bail: + return ret; +} + +static int hfi1_process_opa_mad(struct ib_device *ibdev, int mad_flags, + u8 port, const struct ib_wc *in_wc, + const struct ib_grh *in_grh, + const struct opa_mad *in_mad, + struct opa_mad *out_mad, size_t *out_mad_size, + u16 *out_mad_pkey_index) +{ + int ret; + int pkey_idx; + u32 resp_len = 0; + struct hfi1_ibport *ibp = to_iport(ibdev, port); + + pkey_idx = hfi1_lookup_pkey_idx(ibp, LIM_MGMT_P_KEY); + if (pkey_idx < 0) { + pr_warn("failed to find limited mgmt pkey, defaulting 0x%x\n", + hfi1_get_pkey(ibp, 1)); + pkey_idx = 1; + } + *out_mad_pkey_index = (u16)pkey_idx; + + switch (in_mad->mad_hdr.mgmt_class) { + case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: + case IB_MGMT_CLASS_SUBN_LID_ROUTED: + if (is_local_mad(ibp, in_mad, in_wc)) { + ret = opa_local_smp_check(ibp, in_wc); + if (ret) + return IB_MAD_RESULT_FAILURE; + } + ret = process_subn_opa(ibdev, mad_flags, port, in_mad, + out_mad, &resp_len); + goto bail; + case IB_MGMT_CLASS_PERF_MGMT: + ret = process_perf_opa(ibdev, port, in_mad, out_mad, + &resp_len); + goto bail; + + default: + ret = IB_MAD_RESULT_SUCCESS; + } + +bail: + if (ret & IB_MAD_RESULT_REPLY) + *out_mad_size = round_up(resp_len, 8); + else if (ret & IB_MAD_RESULT_SUCCESS) + *out_mad_size = in_wc->byte_len - sizeof(struct ib_grh); + + return ret; +} + +static int hfi1_process_ib_mad(struct ib_device *ibdev, int mad_flags, u8 port, + const struct ib_wc *in_wc, + const struct ib_grh *in_grh, + const struct ib_mad *in_mad, + struct ib_mad *out_mad) +{ + int ret; + + switch (in_mad->mad_hdr.mgmt_class) { + case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: + case IB_MGMT_CLASS_SUBN_LID_ROUTED: + ret = process_subn(ibdev, mad_flags, port, in_mad, out_mad); + goto bail; + default: + ret = IB_MAD_RESULT_SUCCESS; + } + +bail: + return ret; +} + +/** + * hfi1_process_mad - process an incoming MAD packet + * @ibdev: the infiniband device this packet came in on + * @mad_flags: MAD flags + * @port: the port number this packet came in on + * @in_wc: the work completion entry for this packet + * @in_grh: the global route header for this packet + * @in_mad: the incoming MAD + * @out_mad: any outgoing MAD reply + * + * Returns IB_MAD_RESULT_SUCCESS if this is a MAD that we are not + * interested in processing. + * + * Note that the verbs framework has already done the MAD sanity checks, + * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE + * MADs. + * + * This is called by the ib_mad module. + */ +int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port, + const struct ib_wc *in_wc, const struct ib_grh *in_grh, + const struct ib_mad_hdr *in_mad, size_t in_mad_size, + struct ib_mad_hdr *out_mad, size_t *out_mad_size, + u16 *out_mad_pkey_index) +{ + switch (in_mad->base_version) { + case OPA_MGMT_BASE_VERSION: + if (unlikely(in_mad_size != sizeof(struct opa_mad))) { + dev_err(ibdev->dma_device, "invalid in_mad_size\n"); + return IB_MAD_RESULT_FAILURE; + } + return hfi1_process_opa_mad(ibdev, mad_flags, port, + in_wc, in_grh, + (struct opa_mad *)in_mad, + (struct opa_mad *)out_mad, + out_mad_size, + out_mad_pkey_index); + case IB_MGMT_BASE_VERSION: + return hfi1_process_ib_mad(ibdev, mad_flags, port, + in_wc, in_grh, + (const struct ib_mad *)in_mad, + (struct ib_mad *)out_mad); + default: + break; + } + + return IB_MAD_RESULT_FAILURE; +} + +static void send_handler(struct ib_mad_agent *agent, + struct ib_mad_send_wc *mad_send_wc) +{ + ib_free_send_mad(mad_send_wc->send_buf); +} + +int hfi1_create_agents(struct hfi1_ibdev *dev) +{ + struct hfi1_devdata *dd = dd_from_dev(dev); + struct ib_mad_agent *agent; + struct hfi1_ibport *ibp; + int p; + int ret; + + for (p = 0; p < dd->num_pports; p++) { + ibp = &dd->pport[p].ibport_data; + agent = ib_register_mad_agent(&dev->ibdev, p + 1, IB_QPT_SMI, + NULL, 0, send_handler, + NULL, NULL, 0); + if (IS_ERR(agent)) { + ret = PTR_ERR(agent); + goto err; + } + + ibp->send_agent = agent; + } + + return 0; + +err: + for (p = 0; p < dd->num_pports; p++) { + ibp = &dd->pport[p].ibport_data; + if (ibp->send_agent) { + agent = ibp->send_agent; + ibp->send_agent = NULL; + ib_unregister_mad_agent(agent); + } + } + + return ret; +} + +void hfi1_free_agents(struct hfi1_ibdev *dev) +{ + struct hfi1_devdata *dd = dd_from_dev(dev); + struct ib_mad_agent *agent; + struct hfi1_ibport *ibp; + int p; + + for (p = 0; p < dd->num_pports; p++) { + ibp = &dd->pport[p].ibport_data; + if (ibp->send_agent) { + agent = ibp->send_agent; + ibp->send_agent = NULL; + ib_unregister_mad_agent(agent); + } + if (ibp->sm_ah) { + ib_destroy_ah(&ibp->sm_ah->ibah); + ibp->sm_ah = NULL; + } + } +}