1f48ad614SDennis Dalessandro /* 2*b697d7d8SMichael J. Ruhl * Copyright(c) 2015 - 2018 Intel Corporation. 3f48ad614SDennis Dalessandro * 4f48ad614SDennis Dalessandro * This file is provided under a dual BSD/GPLv2 license. When using or 5f48ad614SDennis Dalessandro * redistributing this file, you may do so under either license. 6f48ad614SDennis Dalessandro * 7f48ad614SDennis Dalessandro * GPL LICENSE SUMMARY 8f48ad614SDennis Dalessandro * 9f48ad614SDennis Dalessandro * This program is free software; you can redistribute it and/or modify 10f48ad614SDennis Dalessandro * it under the terms of version 2 of the GNU General Public License as 11f48ad614SDennis Dalessandro * published by the Free Software Foundation. 12f48ad614SDennis Dalessandro * 13f48ad614SDennis Dalessandro * This program is distributed in the hope that it will be useful, but 14f48ad614SDennis Dalessandro * WITHOUT ANY WARRANTY; without even the implied warranty of 15f48ad614SDennis Dalessandro * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16f48ad614SDennis Dalessandro * General Public License for more details. 17f48ad614SDennis Dalessandro * 18f48ad614SDennis Dalessandro * BSD LICENSE 19f48ad614SDennis Dalessandro * 20f48ad614SDennis Dalessandro * Redistribution and use in source and binary forms, with or without 21f48ad614SDennis Dalessandro * modification, are permitted provided that the following conditions 22f48ad614SDennis Dalessandro * are met: 23f48ad614SDennis Dalessandro * 24f48ad614SDennis Dalessandro * - Redistributions of source code must retain the above copyright 25f48ad614SDennis Dalessandro * notice, this list of conditions and the following disclaimer. 26f48ad614SDennis Dalessandro * - Redistributions in binary form must reproduce the above copyright 27f48ad614SDennis Dalessandro * notice, this list of conditions and the following disclaimer in 28f48ad614SDennis Dalessandro * the documentation and/or other materials provided with the 29f48ad614SDennis Dalessandro * distribution. 30f48ad614SDennis Dalessandro * - Neither the name of Intel Corporation nor the names of its 31f48ad614SDennis Dalessandro * contributors may be used to endorse or promote products derived 32f48ad614SDennis Dalessandro * from this software without specific prior written permission. 33f48ad614SDennis Dalessandro * 34f48ad614SDennis Dalessandro * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 35f48ad614SDennis Dalessandro * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 36f48ad614SDennis Dalessandro * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 37f48ad614SDennis Dalessandro * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 38f48ad614SDennis Dalessandro * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 39f48ad614SDennis Dalessandro * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 40f48ad614SDennis Dalessandro * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 41f48ad614SDennis Dalessandro * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 42f48ad614SDennis Dalessandro * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 43f48ad614SDennis Dalessandro * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 44f48ad614SDennis Dalessandro * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 45f48ad614SDennis Dalessandro * 46f48ad614SDennis Dalessandro */ 47f48ad614SDennis Dalessandro 48f48ad614SDennis Dalessandro #include <linux/net.h> 49f48ad614SDennis Dalessandro #include <rdma/ib_smi.h> 50f48ad614SDennis Dalessandro 51f48ad614SDennis Dalessandro #include "hfi.h" 52f48ad614SDennis Dalessandro #include "mad.h" 53f48ad614SDennis Dalessandro #include "verbs_txreq.h" 54f48ad614SDennis Dalessandro #include "qp.h" 55f48ad614SDennis Dalessandro 5688733e3bSDon Hiatt /* We support only two types - 9B and 16B for now */ 5788733e3bSDon Hiatt static const hfi1_make_req hfi1_make_ud_req_tbl[2] = { 5888733e3bSDon Hiatt [HFI1_PKT_TYPE_9B] = &hfi1_make_ud_req_9B, 5988733e3bSDon Hiatt [HFI1_PKT_TYPE_16B] = &hfi1_make_ud_req_16B 6088733e3bSDon Hiatt }; 6188733e3bSDon Hiatt 62f48ad614SDennis Dalessandro /** 63f48ad614SDennis Dalessandro * ud_loopback - handle send on loopback QPs 64f48ad614SDennis Dalessandro * @sqp: the sending QP 65f48ad614SDennis Dalessandro * @swqe: the send work request 66f48ad614SDennis Dalessandro * 67f48ad614SDennis Dalessandro * This is called from hfi1_make_ud_req() to forward a WQE addressed 68f48ad614SDennis Dalessandro * to the same HFI. 69f48ad614SDennis Dalessandro * Note that the receive interrupt handler may be calling hfi1_ud_rcv() 70f48ad614SDennis Dalessandro * while this is being called. 71f48ad614SDennis Dalessandro */ 72f48ad614SDennis Dalessandro static void ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe) 73f48ad614SDennis Dalessandro { 74f48ad614SDennis Dalessandro struct hfi1_ibport *ibp = to_iport(sqp->ibqp.device, sqp->port_num); 75f48ad614SDennis Dalessandro struct hfi1_pportdata *ppd; 7688733e3bSDon Hiatt struct hfi1_qp_priv *priv = sqp->priv; 77f48ad614SDennis Dalessandro struct rvt_qp *qp; 7890898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr; 79f48ad614SDennis Dalessandro unsigned long flags; 80f48ad614SDennis Dalessandro struct rvt_sge_state ssge; 81f48ad614SDennis Dalessandro struct rvt_sge *sge; 82f48ad614SDennis Dalessandro struct ib_wc wc; 83f48ad614SDennis Dalessandro u32 length; 84f48ad614SDennis Dalessandro enum ib_qp_type sqptype, dqptype; 85f48ad614SDennis Dalessandro 86f48ad614SDennis Dalessandro rcu_read_lock(); 87f48ad614SDennis Dalessandro 88f48ad614SDennis Dalessandro qp = rvt_lookup_qpn(ib_to_rvt(sqp->ibqp.device), &ibp->rvp, 89f48ad614SDennis Dalessandro swqe->ud_wr.remote_qpn); 90f48ad614SDennis Dalessandro if (!qp) { 91f48ad614SDennis Dalessandro ibp->rvp.n_pkt_drops++; 92f48ad614SDennis Dalessandro rcu_read_unlock(); 93f48ad614SDennis Dalessandro return; 94f48ad614SDennis Dalessandro } 95f48ad614SDennis Dalessandro 96f48ad614SDennis Dalessandro sqptype = sqp->ibqp.qp_type == IB_QPT_GSI ? 97f48ad614SDennis Dalessandro IB_QPT_UD : sqp->ibqp.qp_type; 98f48ad614SDennis Dalessandro dqptype = qp->ibqp.qp_type == IB_QPT_GSI ? 99f48ad614SDennis Dalessandro IB_QPT_UD : qp->ibqp.qp_type; 100f48ad614SDennis Dalessandro 101f48ad614SDennis Dalessandro if (dqptype != sqptype || 102f48ad614SDennis Dalessandro !(ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK)) { 103f48ad614SDennis Dalessandro ibp->rvp.n_pkt_drops++; 104f48ad614SDennis Dalessandro goto drop; 105f48ad614SDennis Dalessandro } 106f48ad614SDennis Dalessandro 107f48ad614SDennis Dalessandro ah_attr = &ibah_to_rvtah(swqe->ud_wr.ah)->attr; 108f48ad614SDennis Dalessandro ppd = ppd_from_ibp(ibp); 109f48ad614SDennis Dalessandro 110f48ad614SDennis Dalessandro if (qp->ibqp.qp_num > 1) { 111f48ad614SDennis Dalessandro u16 pkey; 11288733e3bSDon Hiatt u32 slid; 113d8966fcdSDasaratharaman Chandramouli u8 sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)]; 114f48ad614SDennis Dalessandro 115f48ad614SDennis Dalessandro pkey = hfi1_get_pkey(ibp, sqp->s_pkey_index); 116d8966fcdSDasaratharaman Chandramouli slid = ppd->lid | (rdma_ah_get_path_bits(ah_attr) & 117f48ad614SDennis Dalessandro ((1 << ppd->lmc) - 1)); 118f48ad614SDennis Dalessandro if (unlikely(ingress_pkey_check(ppd, pkey, sc5, 1195786adf3SDon Hiatt qp->s_pkey_index, 1205786adf3SDon Hiatt slid, false))) { 12113d84914SDennis Dalessandro hfi1_bad_pkey(ibp, pkey, 122d8966fcdSDasaratharaman Chandramouli rdma_ah_get_sl(ah_attr), 123f48ad614SDennis Dalessandro sqp->ibqp.qp_num, qp->ibqp.qp_num, 124d8966fcdSDasaratharaman Chandramouli slid, rdma_ah_get_dlid(ah_attr)); 125f48ad614SDennis Dalessandro goto drop; 126f48ad614SDennis Dalessandro } 127f48ad614SDennis Dalessandro } 128f48ad614SDennis Dalessandro 129f48ad614SDennis Dalessandro /* 130f48ad614SDennis Dalessandro * Check that the qkey matches (except for QP0, see 9.6.1.4.1). 131f48ad614SDennis Dalessandro * Qkeys with the high order bit set mean use the 132f48ad614SDennis Dalessandro * qkey from the QP context instead of the WR (see 10.2.5). 133f48ad614SDennis Dalessandro */ 134f48ad614SDennis Dalessandro if (qp->ibqp.qp_num) { 135f48ad614SDennis Dalessandro u32 qkey; 136f48ad614SDennis Dalessandro 137f48ad614SDennis Dalessandro qkey = (int)swqe->ud_wr.remote_qkey < 0 ? 138f48ad614SDennis Dalessandro sqp->qkey : swqe->ud_wr.remote_qkey; 13913d84914SDennis Dalessandro if (unlikely(qkey != qp->qkey)) 14013d84914SDennis Dalessandro goto drop; /* silently drop per IBTA spec */ 141f48ad614SDennis Dalessandro } 142f48ad614SDennis Dalessandro 143f48ad614SDennis Dalessandro /* 144f48ad614SDennis Dalessandro * A GRH is expected to precede the data even if not 145f48ad614SDennis Dalessandro * present on the wire. 146f48ad614SDennis Dalessandro */ 147f48ad614SDennis Dalessandro length = swqe->length; 148f48ad614SDennis Dalessandro memset(&wc, 0, sizeof(wc)); 149f48ad614SDennis Dalessandro wc.byte_len = length + sizeof(struct ib_grh); 150f48ad614SDennis Dalessandro 151f48ad614SDennis Dalessandro if (swqe->wr.opcode == IB_WR_SEND_WITH_IMM) { 152f48ad614SDennis Dalessandro wc.wc_flags = IB_WC_WITH_IMM; 153f48ad614SDennis Dalessandro wc.ex.imm_data = swqe->wr.ex.imm_data; 154f48ad614SDennis Dalessandro } 155f48ad614SDennis Dalessandro 156f48ad614SDennis Dalessandro spin_lock_irqsave(&qp->r_lock, flags); 157f48ad614SDennis Dalessandro 158f48ad614SDennis Dalessandro /* 159f48ad614SDennis Dalessandro * Get the next work request entry to find where to put the data. 160f48ad614SDennis Dalessandro */ 161f48ad614SDennis Dalessandro if (qp->r_flags & RVT_R_REUSE_SGE) { 162f48ad614SDennis Dalessandro qp->r_flags &= ~RVT_R_REUSE_SGE; 163f48ad614SDennis Dalessandro } else { 164f48ad614SDennis Dalessandro int ret; 165f48ad614SDennis Dalessandro 166832369faSBrian Welty ret = rvt_get_rwqe(qp, false); 167f48ad614SDennis Dalessandro if (ret < 0) { 168beb5a042SBrian Welty rvt_rc_error(qp, IB_WC_LOC_QP_OP_ERR); 169f48ad614SDennis Dalessandro goto bail_unlock; 170f48ad614SDennis Dalessandro } 171f48ad614SDennis Dalessandro if (!ret) { 172f48ad614SDennis Dalessandro if (qp->ibqp.qp_num == 0) 173f48ad614SDennis Dalessandro ibp->rvp.n_vl15_dropped++; 174f48ad614SDennis Dalessandro goto bail_unlock; 175f48ad614SDennis Dalessandro } 176f48ad614SDennis Dalessandro } 177f48ad614SDennis Dalessandro /* Silently drop packets which are too big. */ 178f48ad614SDennis Dalessandro if (unlikely(wc.byte_len > qp->r_len)) { 179f48ad614SDennis Dalessandro qp->r_flags |= RVT_R_REUSE_SGE; 180f48ad614SDennis Dalessandro ibp->rvp.n_pkt_drops++; 181f48ad614SDennis Dalessandro goto bail_unlock; 182f48ad614SDennis Dalessandro } 183f48ad614SDennis Dalessandro 184d8966fcdSDasaratharaman Chandramouli if (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) { 185527dbf12SDasaratharaman Chandramouli struct ib_grh grh; 18688733e3bSDon Hiatt struct ib_global_route grd = *(rdma_ah_read_grh(ah_attr)); 187527dbf12SDasaratharaman Chandramouli 18888733e3bSDon Hiatt /* 18988733e3bSDon Hiatt * For loopback packets with extended LIDs, the 19088733e3bSDon Hiatt * sgid_index in the GRH is 0 and the dgid is 19188733e3bSDon Hiatt * OPA GID of the sender. While creating a response 19288733e3bSDon Hiatt * to the loopback packet, IB core creates the new 19388733e3bSDon Hiatt * sgid_index from the DGID and that will be the 19488733e3bSDon Hiatt * OPA_GID_INDEX. The new dgid is from the sgid 19588733e3bSDon Hiatt * index and that will be in the IB GID format. 19688733e3bSDon Hiatt * 19788733e3bSDon Hiatt * We now have a case where the sent packet had a 19888733e3bSDon Hiatt * different sgid_index and dgid compared to the 19988733e3bSDon Hiatt * one that was received in response. 20088733e3bSDon Hiatt * 20188733e3bSDon Hiatt * Fix this inconsistency. 20288733e3bSDon Hiatt */ 20388733e3bSDon Hiatt if (priv->hdr_type == HFI1_PKT_TYPE_16B) { 20488733e3bSDon Hiatt if (grd.sgid_index == 0) 20588733e3bSDon Hiatt grd.sgid_index = OPA_GID_INDEX; 20688733e3bSDon Hiatt 20788733e3bSDon Hiatt if (ib_is_opa_gid(&grd.dgid)) 20888733e3bSDon Hiatt grd.dgid.global.interface_id = 20988733e3bSDon Hiatt cpu_to_be64(ppd->guids[HFI1_PORT_GUID_INDEX]); 21088733e3bSDon Hiatt } 21188733e3bSDon Hiatt 21288733e3bSDon Hiatt hfi1_make_grh(ibp, &grh, &grd, 0, 0); 213527dbf12SDasaratharaman Chandramouli hfi1_copy_sge(&qp->r_sge, &grh, 2140128fceaSBrian Welty sizeof(grh), true, false); 215f48ad614SDennis Dalessandro wc.wc_flags |= IB_WC_GRH; 216f48ad614SDennis Dalessandro } else { 2171198fceaSBrian Welty rvt_skip_sge(&qp->r_sge, sizeof(struct ib_grh), true); 218f48ad614SDennis Dalessandro } 219f48ad614SDennis Dalessandro ssge.sg_list = swqe->sg_list + 1; 220f48ad614SDennis Dalessandro ssge.sge = *swqe->sg_list; 221f48ad614SDennis Dalessandro ssge.num_sge = swqe->wr.num_sge; 222f48ad614SDennis Dalessandro sge = &ssge.sge; 223f48ad614SDennis Dalessandro while (length) { 224f48ad614SDennis Dalessandro u32 len = sge->length; 225f48ad614SDennis Dalessandro 226f48ad614SDennis Dalessandro if (len > length) 227f48ad614SDennis Dalessandro len = length; 228f48ad614SDennis Dalessandro if (len > sge->sge_length) 229f48ad614SDennis Dalessandro len = sge->sge_length; 230f48ad614SDennis Dalessandro WARN_ON_ONCE(len == 0); 2310128fceaSBrian Welty hfi1_copy_sge(&qp->r_sge, sge->vaddr, len, true, false); 232f48ad614SDennis Dalessandro sge->vaddr += len; 233f48ad614SDennis Dalessandro sge->length -= len; 234f48ad614SDennis Dalessandro sge->sge_length -= len; 235f48ad614SDennis Dalessandro if (sge->sge_length == 0) { 236f48ad614SDennis Dalessandro if (--ssge.num_sge) 237f48ad614SDennis Dalessandro *sge = *ssge.sg_list++; 238f48ad614SDennis Dalessandro } else if (sge->length == 0 && sge->mr->lkey) { 239f48ad614SDennis Dalessandro if (++sge->n >= RVT_SEGSZ) { 240f48ad614SDennis Dalessandro if (++sge->m >= sge->mr->mapsz) 241f48ad614SDennis Dalessandro break; 242f48ad614SDennis Dalessandro sge->n = 0; 243f48ad614SDennis Dalessandro } 244f48ad614SDennis Dalessandro sge->vaddr = 245f48ad614SDennis Dalessandro sge->mr->map[sge->m]->segs[sge->n].vaddr; 246f48ad614SDennis Dalessandro sge->length = 247f48ad614SDennis Dalessandro sge->mr->map[sge->m]->segs[sge->n].length; 248f48ad614SDennis Dalessandro } 249f48ad614SDennis Dalessandro length -= len; 250f48ad614SDennis Dalessandro } 251f48ad614SDennis Dalessandro rvt_put_ss(&qp->r_sge); 252f48ad614SDennis Dalessandro if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags)) 253f48ad614SDennis Dalessandro goto bail_unlock; 254f48ad614SDennis Dalessandro wc.wr_id = qp->r_wr_id; 255f48ad614SDennis Dalessandro wc.status = IB_WC_SUCCESS; 256f48ad614SDennis Dalessandro wc.opcode = IB_WC_RECV; 257f48ad614SDennis Dalessandro wc.qp = &qp->ibqp; 258f48ad614SDennis Dalessandro wc.src_qp = sqp->ibqp.qp_num; 259f48ad614SDennis Dalessandro if (qp->ibqp.qp_type == IB_QPT_GSI || qp->ibqp.qp_type == IB_QPT_SMI) { 260f48ad614SDennis Dalessandro if (sqp->ibqp.qp_type == IB_QPT_GSI || 261f48ad614SDennis Dalessandro sqp->ibqp.qp_type == IB_QPT_SMI) 262f48ad614SDennis Dalessandro wc.pkey_index = swqe->ud_wr.pkey_index; 263f48ad614SDennis Dalessandro else 264f48ad614SDennis Dalessandro wc.pkey_index = sqp->s_pkey_index; 265f48ad614SDennis Dalessandro } else { 266f48ad614SDennis Dalessandro wc.pkey_index = 0; 267f48ad614SDennis Dalessandro } 268b64581adSDon Hiatt wc.slid = (ppd->lid | (rdma_ah_get_path_bits(ah_attr) & 269b64581adSDon Hiatt ((1 << ppd->lmc) - 1))) & U16_MAX; 270f48ad614SDennis Dalessandro /* Check for loopback when the port lid is not set */ 271f48ad614SDennis Dalessandro if (wc.slid == 0 && sqp->ibqp.qp_type == IB_QPT_GSI) 272f48ad614SDennis Dalessandro wc.slid = be16_to_cpu(IB_LID_PERMISSIVE); 273d8966fcdSDasaratharaman Chandramouli wc.sl = rdma_ah_get_sl(ah_attr); 274d8966fcdSDasaratharaman Chandramouli wc.dlid_path_bits = rdma_ah_get_dlid(ah_attr) & ((1 << ppd->lmc) - 1); 275f48ad614SDennis Dalessandro wc.port_num = qp->port_num; 276f48ad614SDennis Dalessandro /* Signal completion event if the solicited bit is set. */ 277f48ad614SDennis Dalessandro rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc, 278f48ad614SDennis Dalessandro swqe->wr.send_flags & IB_SEND_SOLICITED); 279f48ad614SDennis Dalessandro ibp->rvp.n_loop_pkts++; 280f48ad614SDennis Dalessandro bail_unlock: 281f48ad614SDennis Dalessandro spin_unlock_irqrestore(&qp->r_lock, flags); 282f48ad614SDennis Dalessandro drop: 283f48ad614SDennis Dalessandro rcu_read_unlock(); 284f48ad614SDennis Dalessandro } 285f48ad614SDennis Dalessandro 28688733e3bSDon Hiatt static void hfi1_make_bth_deth(struct rvt_qp *qp, struct rvt_swqe *wqe, 28788733e3bSDon Hiatt struct ib_other_headers *ohdr, 28888733e3bSDon Hiatt u16 *pkey, u32 extra_bytes, bool bypass) 28988733e3bSDon Hiatt { 29088733e3bSDon Hiatt u32 bth0; 29188733e3bSDon Hiatt struct hfi1_ibport *ibp; 29288733e3bSDon Hiatt 29388733e3bSDon Hiatt ibp = to_iport(qp->ibqp.device, qp->port_num); 29488733e3bSDon Hiatt if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) { 29588733e3bSDon Hiatt ohdr->u.ud.imm_data = wqe->wr.ex.imm_data; 29688733e3bSDon Hiatt bth0 = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE << 24; 29788733e3bSDon Hiatt } else { 29888733e3bSDon Hiatt bth0 = IB_OPCODE_UD_SEND_ONLY << 24; 29988733e3bSDon Hiatt } 30088733e3bSDon Hiatt 30188733e3bSDon Hiatt if (wqe->wr.send_flags & IB_SEND_SOLICITED) 30288733e3bSDon Hiatt bth0 |= IB_BTH_SOLICITED; 30388733e3bSDon Hiatt bth0 |= extra_bytes << 20; 30488733e3bSDon Hiatt if (qp->ibqp.qp_type == IB_QPT_GSI || qp->ibqp.qp_type == IB_QPT_SMI) 30588733e3bSDon Hiatt *pkey = hfi1_get_pkey(ibp, wqe->ud_wr.pkey_index); 30688733e3bSDon Hiatt else 30788733e3bSDon Hiatt *pkey = hfi1_get_pkey(ibp, qp->s_pkey_index); 30888733e3bSDon Hiatt if (!bypass) 30988733e3bSDon Hiatt bth0 |= *pkey; 31088733e3bSDon Hiatt ohdr->bth[0] = cpu_to_be32(bth0); 31188733e3bSDon Hiatt ohdr->bth[1] = cpu_to_be32(wqe->ud_wr.remote_qpn); 31288733e3bSDon Hiatt ohdr->bth[2] = cpu_to_be32(mask_psn(wqe->psn)); 31388733e3bSDon Hiatt /* 31488733e3bSDon Hiatt * Qkeys with the high order bit set mean use the 31588733e3bSDon Hiatt * qkey from the QP context instead of the WR (see 10.2.5). 31688733e3bSDon Hiatt */ 31788733e3bSDon Hiatt ohdr->u.ud.deth[0] = cpu_to_be32((int)wqe->ud_wr.remote_qkey < 0 ? 31888733e3bSDon Hiatt qp->qkey : wqe->ud_wr.remote_qkey); 31988733e3bSDon Hiatt ohdr->u.ud.deth[1] = cpu_to_be32(qp->ibqp.qp_num); 32088733e3bSDon Hiatt } 32188733e3bSDon Hiatt 32288733e3bSDon Hiatt void hfi1_make_ud_req_9B(struct rvt_qp *qp, struct hfi1_pkt_state *ps, 32388733e3bSDon Hiatt struct rvt_swqe *wqe) 32488733e3bSDon Hiatt { 32588733e3bSDon Hiatt u32 nwords, extra_bytes; 32688733e3bSDon Hiatt u16 len, slid, dlid, pkey; 32788733e3bSDon Hiatt u16 lrh0 = 0; 32888733e3bSDon Hiatt u8 sc5; 32988733e3bSDon Hiatt struct hfi1_qp_priv *priv = qp->priv; 33088733e3bSDon Hiatt struct ib_other_headers *ohdr; 33188733e3bSDon Hiatt struct rdma_ah_attr *ah_attr; 33288733e3bSDon Hiatt struct hfi1_pportdata *ppd; 33388733e3bSDon Hiatt struct hfi1_ibport *ibp; 33488733e3bSDon Hiatt struct ib_grh *grh; 33588733e3bSDon Hiatt 33688733e3bSDon Hiatt ibp = to_iport(qp->ibqp.device, qp->port_num); 33788733e3bSDon Hiatt ppd = ppd_from_ibp(ibp); 33888733e3bSDon Hiatt ah_attr = &ibah_to_rvtah(wqe->ud_wr.ah)->attr; 33988733e3bSDon Hiatt 34088733e3bSDon Hiatt extra_bytes = -wqe->length & 3; 34188733e3bSDon Hiatt nwords = ((wqe->length + extra_bytes) >> 2) + SIZE_OF_CRC; 34288733e3bSDon Hiatt /* header size in dwords LRH+BTH+DETH = (8+12+8)/4. */ 3439636258fSMitko Haralanov ps->s_txreq->hdr_dwords = 7; 34488733e3bSDon Hiatt if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) 3459636258fSMitko Haralanov ps->s_txreq->hdr_dwords++; 34688733e3bSDon Hiatt 34788733e3bSDon Hiatt if (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) { 34888733e3bSDon Hiatt grh = &ps->s_txreq->phdr.hdr.ibh.u.l.grh; 3499636258fSMitko Haralanov ps->s_txreq->hdr_dwords += 3509636258fSMitko Haralanov hfi1_make_grh(ibp, grh, rdma_ah_read_grh(ah_attr), 35178d3633bSMike Marciniszyn ps->s_txreq->hdr_dwords - LRH_9B_DWORDS, 35278d3633bSMike Marciniszyn nwords); 35388733e3bSDon Hiatt lrh0 = HFI1_LRH_GRH; 35488733e3bSDon Hiatt ohdr = &ps->s_txreq->phdr.hdr.ibh.u.l.oth; 35588733e3bSDon Hiatt } else { 35688733e3bSDon Hiatt lrh0 = HFI1_LRH_BTH; 35788733e3bSDon Hiatt ohdr = &ps->s_txreq->phdr.hdr.ibh.u.oth; 35888733e3bSDon Hiatt } 35988733e3bSDon Hiatt 36088733e3bSDon Hiatt sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)]; 36188733e3bSDon Hiatt lrh0 |= (rdma_ah_get_sl(ah_attr) & 0xf) << 4; 36288733e3bSDon Hiatt if (qp->ibqp.qp_type == IB_QPT_SMI) { 36388733e3bSDon Hiatt lrh0 |= 0xF000; /* Set VL (see ch. 13.5.3.1) */ 36488733e3bSDon Hiatt priv->s_sc = 0xf; 36588733e3bSDon Hiatt } else { 36688733e3bSDon Hiatt lrh0 |= (sc5 & 0xf) << 12; 36788733e3bSDon Hiatt priv->s_sc = sc5; 36888733e3bSDon Hiatt } 36988733e3bSDon Hiatt 37088733e3bSDon Hiatt dlid = opa_get_lid(rdma_ah_get_dlid(ah_attr), 9B); 37188733e3bSDon Hiatt if (dlid == be16_to_cpu(IB_LID_PERMISSIVE)) { 37288733e3bSDon Hiatt slid = be16_to_cpu(IB_LID_PERMISSIVE); 37388733e3bSDon Hiatt } else { 37488733e3bSDon Hiatt u16 lid = (u16)ppd->lid; 37588733e3bSDon Hiatt 37688733e3bSDon Hiatt if (lid) { 37788733e3bSDon Hiatt lid |= rdma_ah_get_path_bits(ah_attr) & 37888733e3bSDon Hiatt ((1 << ppd->lmc) - 1); 37988733e3bSDon Hiatt slid = lid; 38088733e3bSDon Hiatt } else { 38188733e3bSDon Hiatt slid = be16_to_cpu(IB_LID_PERMISSIVE); 38288733e3bSDon Hiatt } 38388733e3bSDon Hiatt } 38488733e3bSDon Hiatt hfi1_make_bth_deth(qp, wqe, ohdr, &pkey, extra_bytes, false); 3859636258fSMitko Haralanov len = ps->s_txreq->hdr_dwords + nwords; 38688733e3bSDon Hiatt 38788733e3bSDon Hiatt /* Setup the packet */ 38888733e3bSDon Hiatt ps->s_txreq->phdr.hdr.hdr_type = HFI1_PKT_TYPE_9B; 38988733e3bSDon Hiatt hfi1_make_ib_hdr(&ps->s_txreq->phdr.hdr.ibh, 39088733e3bSDon Hiatt lrh0, len, dlid, slid); 39188733e3bSDon Hiatt } 39288733e3bSDon Hiatt 39388733e3bSDon Hiatt void hfi1_make_ud_req_16B(struct rvt_qp *qp, struct hfi1_pkt_state *ps, 39488733e3bSDon Hiatt struct rvt_swqe *wqe) 39588733e3bSDon Hiatt { 39688733e3bSDon Hiatt struct hfi1_qp_priv *priv = qp->priv; 39788733e3bSDon Hiatt struct ib_other_headers *ohdr; 39888733e3bSDon Hiatt struct rdma_ah_attr *ah_attr; 39988733e3bSDon Hiatt struct hfi1_pportdata *ppd; 40088733e3bSDon Hiatt struct hfi1_ibport *ibp; 40188733e3bSDon Hiatt u32 dlid, slid, nwords, extra_bytes; 40281cd3891SDon Hiatt u32 dest_qp = wqe->ud_wr.remote_qpn; 40381cd3891SDon Hiatt u32 src_qp = qp->ibqp.qp_num; 40488733e3bSDon Hiatt u16 len, pkey; 40588733e3bSDon Hiatt u8 l4, sc5; 40681cd3891SDon Hiatt bool is_mgmt = false; 40788733e3bSDon Hiatt 40888733e3bSDon Hiatt ibp = to_iport(qp->ibqp.device, qp->port_num); 40988733e3bSDon Hiatt ppd = ppd_from_ibp(ibp); 41088733e3bSDon Hiatt ah_attr = &ibah_to_rvtah(wqe->ud_wr.ah)->attr; 41181cd3891SDon Hiatt 41281cd3891SDon Hiatt /* 41381cd3891SDon Hiatt * Build 16B Management Packet if either the destination 41481cd3891SDon Hiatt * or source queue pair number is 0 or 1. 41581cd3891SDon Hiatt */ 41681cd3891SDon Hiatt if (dest_qp == 0 || src_qp == 0 || dest_qp == 1 || src_qp == 1) { 41781cd3891SDon Hiatt /* header size in dwords 16B LRH+L4_FM = (16+8)/4. */ 41881cd3891SDon Hiatt ps->s_txreq->hdr_dwords = 6; 41981cd3891SDon Hiatt is_mgmt = true; 42081cd3891SDon Hiatt } else { 42188733e3bSDon Hiatt /* header size in dwords 16B LRH+BTH+DETH = (16+12+8)/4. */ 4229636258fSMitko Haralanov ps->s_txreq->hdr_dwords = 9; 42388733e3bSDon Hiatt if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) 4249636258fSMitko Haralanov ps->s_txreq->hdr_dwords++; 42581cd3891SDon Hiatt } 42688733e3bSDon Hiatt 42788733e3bSDon Hiatt /* SW provides space for CRC and LT for bypass packets. */ 4289636258fSMitko Haralanov extra_bytes = hfi1_get_16b_padding((ps->s_txreq->hdr_dwords << 2), 42988733e3bSDon Hiatt wqe->length); 43088733e3bSDon Hiatt nwords = ((wqe->length + extra_bytes + SIZE_OF_LT) >> 2) + SIZE_OF_CRC; 43188733e3bSDon Hiatt 43288733e3bSDon Hiatt if ((rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) && 43388733e3bSDon Hiatt hfi1_check_mcast(rdma_ah_get_dlid(ah_attr))) { 43488733e3bSDon Hiatt struct ib_grh *grh; 43588733e3bSDon Hiatt struct ib_global_route *grd = rdma_ah_retrieve_grh(ah_attr); 43688733e3bSDon Hiatt /* 43788733e3bSDon Hiatt * Ensure OPA GIDs are transformed to IB gids 43888733e3bSDon Hiatt * before creating the GRH. 43988733e3bSDon Hiatt */ 44088733e3bSDon Hiatt if (grd->sgid_index == OPA_GID_INDEX) { 44188733e3bSDon Hiatt dd_dev_warn(ppd->dd, "Bad sgid_index. sgid_index: %d\n", 44288733e3bSDon Hiatt grd->sgid_index); 44388733e3bSDon Hiatt grd->sgid_index = 0; 44488733e3bSDon Hiatt } 44588733e3bSDon Hiatt grh = &ps->s_txreq->phdr.hdr.opah.u.l.grh; 44678d3633bSMike Marciniszyn ps->s_txreq->hdr_dwords += hfi1_make_grh( 44778d3633bSMike Marciniszyn ibp, grh, grd, 44878d3633bSMike Marciniszyn ps->s_txreq->hdr_dwords - LRH_16B_DWORDS, 44978d3633bSMike Marciniszyn nwords); 45088733e3bSDon Hiatt ohdr = &ps->s_txreq->phdr.hdr.opah.u.l.oth; 45188733e3bSDon Hiatt l4 = OPA_16B_L4_IB_GLOBAL; 45288733e3bSDon Hiatt } else { 45388733e3bSDon Hiatt ohdr = &ps->s_txreq->phdr.hdr.opah.u.oth; 45488733e3bSDon Hiatt l4 = OPA_16B_L4_IB_LOCAL; 45588733e3bSDon Hiatt } 45688733e3bSDon Hiatt 45788733e3bSDon Hiatt sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)]; 45888733e3bSDon Hiatt if (qp->ibqp.qp_type == IB_QPT_SMI) 45988733e3bSDon Hiatt priv->s_sc = 0xf; 46088733e3bSDon Hiatt else 46188733e3bSDon Hiatt priv->s_sc = sc5; 46288733e3bSDon Hiatt 46388733e3bSDon Hiatt dlid = opa_get_lid(rdma_ah_get_dlid(ah_attr), 16B); 46488733e3bSDon Hiatt if (!ppd->lid) 46588733e3bSDon Hiatt slid = be32_to_cpu(OPA_LID_PERMISSIVE); 46688733e3bSDon Hiatt else 46788733e3bSDon Hiatt slid = ppd->lid | (rdma_ah_get_path_bits(ah_attr) & 46888733e3bSDon Hiatt ((1 << ppd->lmc) - 1)); 46988733e3bSDon Hiatt 47081cd3891SDon Hiatt if (is_mgmt) { 47181cd3891SDon Hiatt l4 = OPA_16B_L4_FM; 47281cd3891SDon Hiatt pkey = hfi1_get_pkey(ibp, wqe->ud_wr.pkey_index); 47381cd3891SDon Hiatt hfi1_16B_set_qpn(&ps->s_txreq->phdr.hdr.opah.u.mgmt, 47481cd3891SDon Hiatt dest_qp, src_qp); 47581cd3891SDon Hiatt } else { 47688733e3bSDon Hiatt hfi1_make_bth_deth(qp, wqe, ohdr, &pkey, extra_bytes, true); 47781cd3891SDon Hiatt } 47888733e3bSDon Hiatt /* Convert dwords to flits */ 4799636258fSMitko Haralanov len = (ps->s_txreq->hdr_dwords + nwords) >> 1; 48088733e3bSDon Hiatt 48188733e3bSDon Hiatt /* Setup the packet */ 48288733e3bSDon Hiatt ps->s_txreq->phdr.hdr.hdr_type = HFI1_PKT_TYPE_16B; 48388733e3bSDon Hiatt hfi1_make_16b_hdr(&ps->s_txreq->phdr.hdr.opah, 48488733e3bSDon Hiatt slid, dlid, len, pkey, 0, 0, l4, priv->s_sc); 48588733e3bSDon Hiatt } 48688733e3bSDon Hiatt 487f48ad614SDennis Dalessandro /** 488f48ad614SDennis Dalessandro * hfi1_make_ud_req - construct a UD request packet 489f48ad614SDennis Dalessandro * @qp: the QP 490f48ad614SDennis Dalessandro * 491f48ad614SDennis Dalessandro * Assume s_lock is held. 492f48ad614SDennis Dalessandro * 493f48ad614SDennis Dalessandro * Return 1 if constructed; otherwise, return 0. 494f48ad614SDennis Dalessandro */ 495f48ad614SDennis Dalessandro int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps) 496f48ad614SDennis Dalessandro { 497f48ad614SDennis Dalessandro struct hfi1_qp_priv *priv = qp->priv; 49890898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr; 499f48ad614SDennis Dalessandro struct hfi1_pportdata *ppd; 500f48ad614SDennis Dalessandro struct hfi1_ibport *ibp; 501f48ad614SDennis Dalessandro struct rvt_swqe *wqe; 502f48ad614SDennis Dalessandro int next_cur; 50388733e3bSDon Hiatt u32 lid; 504f48ad614SDennis Dalessandro 505f48ad614SDennis Dalessandro ps->s_txreq = get_txreq(ps->dev, qp); 506*b697d7d8SMichael J. Ruhl if (!ps->s_txreq) 507f48ad614SDennis Dalessandro goto bail_no_tx; 508f48ad614SDennis Dalessandro 509f48ad614SDennis Dalessandro if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_NEXT_SEND_OK)) { 510f48ad614SDennis Dalessandro if (!(ib_rvt_state_ops[qp->state] & RVT_FLUSH_SEND)) 511f48ad614SDennis Dalessandro goto bail; 512f48ad614SDennis Dalessandro /* We are in the error state, flush the work request. */ 5136aa7de05SMark Rutland if (qp->s_last == READ_ONCE(qp->s_head)) 514f48ad614SDennis Dalessandro goto bail; 515f48ad614SDennis Dalessandro /* If DMAs are in progress, we can't flush immediately. */ 516f48ad614SDennis Dalessandro if (iowait_sdma_pending(&priv->s_iowait)) { 517f48ad614SDennis Dalessandro qp->s_flags |= RVT_S_WAIT_DMA; 518f48ad614SDennis Dalessandro goto bail; 519f48ad614SDennis Dalessandro } 520f48ad614SDennis Dalessandro wqe = rvt_get_swqe_ptr(qp, qp->s_last); 521f48ad614SDennis Dalessandro hfi1_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR); 522f48ad614SDennis Dalessandro goto done_free_tx; 523f48ad614SDennis Dalessandro } 524f48ad614SDennis Dalessandro 525f48ad614SDennis Dalessandro /* see post_one_send() */ 5266aa7de05SMark Rutland if (qp->s_cur == READ_ONCE(qp->s_head)) 527f48ad614SDennis Dalessandro goto bail; 528f48ad614SDennis Dalessandro 529f48ad614SDennis Dalessandro wqe = rvt_get_swqe_ptr(qp, qp->s_cur); 530f48ad614SDennis Dalessandro next_cur = qp->s_cur + 1; 531f48ad614SDennis Dalessandro if (next_cur >= qp->s_size) 532f48ad614SDennis Dalessandro next_cur = 0; 533f48ad614SDennis Dalessandro 534f48ad614SDennis Dalessandro /* Construct the header. */ 535f48ad614SDennis Dalessandro ibp = to_iport(qp->ibqp.device, qp->port_num); 536f48ad614SDennis Dalessandro ppd = ppd_from_ibp(ibp); 537f48ad614SDennis Dalessandro ah_attr = &ibah_to_rvtah(wqe->ud_wr.ah)->attr; 53888733e3bSDon Hiatt priv->hdr_type = hfi1_get_hdr_type(ppd->lid, ah_attr); 53988733e3bSDon Hiatt if ((!hfi1_check_mcast(rdma_ah_get_dlid(ah_attr))) || 54088733e3bSDon Hiatt (rdma_ah_get_dlid(ah_attr) == be32_to_cpu(OPA_LID_PERMISSIVE))) { 541d8966fcdSDasaratharaman Chandramouli lid = rdma_ah_get_dlid(ah_attr) & ~((1 << ppd->lmc) - 1); 542f48ad614SDennis Dalessandro if (unlikely(!loopback && 54388733e3bSDon Hiatt ((lid == ppd->lid) || 54488733e3bSDon Hiatt ((lid == be32_to_cpu(OPA_LID_PERMISSIVE)) && 54588733e3bSDon Hiatt (qp->ibqp.qp_type == IB_QPT_GSI))))) { 546f48ad614SDennis Dalessandro unsigned long tflags = ps->flags; 547f48ad614SDennis Dalessandro /* 548f48ad614SDennis Dalessandro * If DMAs are in progress, we can't generate 549f48ad614SDennis Dalessandro * a completion for the loopback packet since 550f48ad614SDennis Dalessandro * it would be out of order. 551f48ad614SDennis Dalessandro * Instead of waiting, we could queue a 552f48ad614SDennis Dalessandro * zero length descriptor so we get a callback. 553f48ad614SDennis Dalessandro */ 554f48ad614SDennis Dalessandro if (iowait_sdma_pending(&priv->s_iowait)) { 555f48ad614SDennis Dalessandro qp->s_flags |= RVT_S_WAIT_DMA; 556f48ad614SDennis Dalessandro goto bail; 557f48ad614SDennis Dalessandro } 558f48ad614SDennis Dalessandro qp->s_cur = next_cur; 559f48ad614SDennis Dalessandro spin_unlock_irqrestore(&qp->s_lock, tflags); 560f48ad614SDennis Dalessandro ud_loopback(qp, wqe); 561f48ad614SDennis Dalessandro spin_lock_irqsave(&qp->s_lock, tflags); 562f48ad614SDennis Dalessandro ps->flags = tflags; 563f48ad614SDennis Dalessandro hfi1_send_complete(qp, wqe, IB_WC_SUCCESS); 564f48ad614SDennis Dalessandro goto done_free_tx; 565f48ad614SDennis Dalessandro } 566f48ad614SDennis Dalessandro } 567f48ad614SDennis Dalessandro 568f48ad614SDennis Dalessandro qp->s_cur = next_cur; 569e922ae06SDon Hiatt ps->s_txreq->s_cur_size = wqe->length; 570b777f154SMitko Haralanov ps->s_txreq->ss = &qp->s_sge; 571d8966fcdSDasaratharaman Chandramouli qp->s_srate = rdma_ah_get_static_rate(ah_attr); 572f48ad614SDennis Dalessandro qp->srate_mbps = ib_rate_to_mbps(qp->s_srate); 573f48ad614SDennis Dalessandro qp->s_wqe = wqe; 574f48ad614SDennis Dalessandro qp->s_sge.sge = wqe->sg_list[0]; 575f48ad614SDennis Dalessandro qp->s_sge.sg_list = wqe->sg_list + 1; 576f48ad614SDennis Dalessandro qp->s_sge.num_sge = wqe->wr.num_sge; 577f48ad614SDennis Dalessandro qp->s_sge.total_len = wqe->length; 578f48ad614SDennis Dalessandro 57988733e3bSDon Hiatt /* Make the appropriate header */ 58088733e3bSDon Hiatt hfi1_make_ud_req_tbl[priv->hdr_type](qp, ps, qp->s_wqe); 581f48ad614SDennis Dalessandro priv->s_sde = qp_to_sdma_engine(qp, priv->s_sc); 582f48ad614SDennis Dalessandro ps->s_txreq->sde = priv->s_sde; 583f48ad614SDennis Dalessandro priv->s_sendcontext = qp_to_send_context(qp, priv->s_sc); 584f48ad614SDennis Dalessandro ps->s_txreq->psc = priv->s_sendcontext; 585f48ad614SDennis Dalessandro /* disarm any ahg */ 586a9b6b3bcSDasaratharaman Chandramouli priv->s_ahg->ahgcount = 0; 587a9b6b3bcSDasaratharaman Chandramouli priv->s_ahg->ahgidx = 0; 588a9b6b3bcSDasaratharaman Chandramouli priv->s_ahg->tx_flags = 0; 589f48ad614SDennis Dalessandro 590f48ad614SDennis Dalessandro return 1; 591f48ad614SDennis Dalessandro 592f48ad614SDennis Dalessandro done_free_tx: 593f48ad614SDennis Dalessandro hfi1_put_txreq(ps->s_txreq); 594f48ad614SDennis Dalessandro ps->s_txreq = NULL; 595f48ad614SDennis Dalessandro return 1; 596f48ad614SDennis Dalessandro 597f48ad614SDennis Dalessandro bail: 598f48ad614SDennis Dalessandro hfi1_put_txreq(ps->s_txreq); 599f48ad614SDennis Dalessandro 600f48ad614SDennis Dalessandro bail_no_tx: 601f48ad614SDennis Dalessandro ps->s_txreq = NULL; 602f48ad614SDennis Dalessandro qp->s_flags &= ~RVT_S_BUSY; 603f48ad614SDennis Dalessandro return 0; 604f48ad614SDennis Dalessandro } 605f48ad614SDennis Dalessandro 606f48ad614SDennis Dalessandro /* 607f48ad614SDennis Dalessandro * Hardware can't check this so we do it here. 608f48ad614SDennis Dalessandro * 609f48ad614SDennis Dalessandro * This is a slightly different algorithm than the standard pkey check. It 610f48ad614SDennis Dalessandro * special cases the management keys and allows for 0x7fff and 0xffff to be in 611f48ad614SDennis Dalessandro * the table at the same time. 612f48ad614SDennis Dalessandro * 613f48ad614SDennis Dalessandro * @returns the index found or -1 if not found 614f48ad614SDennis Dalessandro */ 615f48ad614SDennis Dalessandro int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey) 616f48ad614SDennis Dalessandro { 617f48ad614SDennis Dalessandro struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 618f48ad614SDennis Dalessandro unsigned i; 619f48ad614SDennis Dalessandro 620f48ad614SDennis Dalessandro if (pkey == FULL_MGMT_P_KEY || pkey == LIM_MGMT_P_KEY) { 621f48ad614SDennis Dalessandro unsigned lim_idx = -1; 622f48ad614SDennis Dalessandro 623f48ad614SDennis Dalessandro for (i = 0; i < ARRAY_SIZE(ppd->pkeys); ++i) { 624f48ad614SDennis Dalessandro /* here we look for an exact match */ 625f48ad614SDennis Dalessandro if (ppd->pkeys[i] == pkey) 626f48ad614SDennis Dalessandro return i; 627f48ad614SDennis Dalessandro if (ppd->pkeys[i] == LIM_MGMT_P_KEY) 628f48ad614SDennis Dalessandro lim_idx = i; 629f48ad614SDennis Dalessandro } 630f48ad614SDennis Dalessandro 631f48ad614SDennis Dalessandro /* did not find 0xffff return 0x7fff idx if found */ 632f48ad614SDennis Dalessandro if (pkey == FULL_MGMT_P_KEY) 633f48ad614SDennis Dalessandro return lim_idx; 634f48ad614SDennis Dalessandro 635f48ad614SDennis Dalessandro /* no match... */ 636f48ad614SDennis Dalessandro return -1; 637f48ad614SDennis Dalessandro } 638f48ad614SDennis Dalessandro 639f48ad614SDennis Dalessandro pkey &= 0x7fff; /* remove limited/full membership bit */ 640f48ad614SDennis Dalessandro 641f48ad614SDennis Dalessandro for (i = 0; i < ARRAY_SIZE(ppd->pkeys); ++i) 642f48ad614SDennis Dalessandro if ((ppd->pkeys[i] & 0x7fff) == pkey) 643f48ad614SDennis Dalessandro return i; 644f48ad614SDennis Dalessandro 645f48ad614SDennis Dalessandro /* 646f48ad614SDennis Dalessandro * Should not get here, this means hardware failed to validate pkeys. 647f48ad614SDennis Dalessandro */ 648f48ad614SDennis Dalessandro return -1; 649f48ad614SDennis Dalessandro } 650f48ad614SDennis Dalessandro 65188733e3bSDon Hiatt void return_cnp_16B(struct hfi1_ibport *ibp, struct rvt_qp *qp, 652f59fb9e0SMike Marciniszyn u32 remote_qpn, u16 pkey, u32 slid, u32 dlid, 65388733e3bSDon Hiatt u8 sc5, const struct ib_grh *old_grh) 65488733e3bSDon Hiatt { 65588733e3bSDon Hiatt u64 pbc, pbc_flags = 0; 65688733e3bSDon Hiatt u32 bth0, plen, vl, hwords = 7; 65788733e3bSDon Hiatt u16 len; 65888733e3bSDon Hiatt u8 l4; 65988733e3bSDon Hiatt struct hfi1_16b_header hdr; 66088733e3bSDon Hiatt struct ib_other_headers *ohdr; 66188733e3bSDon Hiatt struct pio_buf *pbuf; 66288733e3bSDon Hiatt struct send_context *ctxt = qp_to_send_context(qp, sc5); 66388733e3bSDon Hiatt struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 66488733e3bSDon Hiatt u32 nwords; 66588733e3bSDon Hiatt 66688733e3bSDon Hiatt /* Populate length */ 66788733e3bSDon Hiatt nwords = ((hfi1_get_16b_padding(hwords << 2, 0) + 66888733e3bSDon Hiatt SIZE_OF_LT) >> 2) + SIZE_OF_CRC; 66988733e3bSDon Hiatt if (old_grh) { 67088733e3bSDon Hiatt struct ib_grh *grh = &hdr.u.l.grh; 67188733e3bSDon Hiatt 67288733e3bSDon Hiatt grh->version_tclass_flow = old_grh->version_tclass_flow; 67378d3633bSMike Marciniszyn grh->paylen = cpu_to_be16( 67478d3633bSMike Marciniszyn (hwords - LRH_16B_DWORDS + nwords) << 2); 67588733e3bSDon Hiatt grh->hop_limit = 0xff; 67688733e3bSDon Hiatt grh->sgid = old_grh->dgid; 67788733e3bSDon Hiatt grh->dgid = old_grh->sgid; 67888733e3bSDon Hiatt ohdr = &hdr.u.l.oth; 67988733e3bSDon Hiatt l4 = OPA_16B_L4_IB_GLOBAL; 68088733e3bSDon Hiatt hwords += sizeof(struct ib_grh) / sizeof(u32); 68188733e3bSDon Hiatt } else { 68288733e3bSDon Hiatt ohdr = &hdr.u.oth; 68388733e3bSDon Hiatt l4 = OPA_16B_L4_IB_LOCAL; 68488733e3bSDon Hiatt } 68588733e3bSDon Hiatt 68688733e3bSDon Hiatt /* BIT 16 to 19 is TVER. Bit 20 to 22 is pad cnt */ 68788733e3bSDon Hiatt bth0 = (IB_OPCODE_CNP << 24) | (1 << 16) | 68888733e3bSDon Hiatt (hfi1_get_16b_padding(hwords << 2, 0) << 20); 68988733e3bSDon Hiatt ohdr->bth[0] = cpu_to_be32(bth0); 69088733e3bSDon Hiatt 69188733e3bSDon Hiatt ohdr->bth[1] = cpu_to_be32(remote_qpn); 69288733e3bSDon Hiatt ohdr->bth[2] = 0; /* PSN 0 */ 69388733e3bSDon Hiatt 69488733e3bSDon Hiatt /* Convert dwords to flits */ 69588733e3bSDon Hiatt len = (hwords + nwords) >> 1; 69688733e3bSDon Hiatt hfi1_make_16b_hdr(&hdr, slid, dlid, len, pkey, 1, 0, l4, sc5); 69788733e3bSDon Hiatt 69888733e3bSDon Hiatt plen = 2 /* PBC */ + hwords + nwords; 69988733e3bSDon Hiatt pbc_flags |= PBC_PACKET_BYPASS | PBC_INSERT_BYPASS_ICRC; 70088733e3bSDon Hiatt vl = sc_to_vlt(ppd->dd, sc5); 70188733e3bSDon Hiatt pbc = create_pbc(ppd, pbc_flags, qp->srate_mbps, vl, plen); 70288733e3bSDon Hiatt if (ctxt) { 70388733e3bSDon Hiatt pbuf = sc_buffer_alloc(ctxt, plen, NULL, NULL); 70488733e3bSDon Hiatt if (pbuf) 70588733e3bSDon Hiatt ppd->dd->pio_inline_send(ppd->dd, pbuf, pbc, 70688733e3bSDon Hiatt &hdr, hwords); 70788733e3bSDon Hiatt } 70888733e3bSDon Hiatt } 70988733e3bSDon Hiatt 710f48ad614SDennis Dalessandro void return_cnp(struct hfi1_ibport *ibp, struct rvt_qp *qp, u32 remote_qpn, 711f59fb9e0SMike Marciniszyn u16 pkey, u32 slid, u32 dlid, u8 sc5, 712f48ad614SDennis Dalessandro const struct ib_grh *old_grh) 713f48ad614SDennis Dalessandro { 714f48ad614SDennis Dalessandro u64 pbc, pbc_flags = 0; 715f48ad614SDennis Dalessandro u32 bth0, plen, vl, hwords = 5; 716f48ad614SDennis Dalessandro u16 lrh0; 717f48ad614SDennis Dalessandro u8 sl = ibp->sc_to_sl[sc5]; 718261a4351SMike Marciniszyn struct ib_header hdr; 719261a4351SMike Marciniszyn struct ib_other_headers *ohdr; 720f48ad614SDennis Dalessandro struct pio_buf *pbuf; 721f48ad614SDennis Dalessandro struct send_context *ctxt = qp_to_send_context(qp, sc5); 722f48ad614SDennis Dalessandro struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 723f48ad614SDennis Dalessandro 724f48ad614SDennis Dalessandro if (old_grh) { 725f48ad614SDennis Dalessandro struct ib_grh *grh = &hdr.u.l.grh; 726f48ad614SDennis Dalessandro 727f48ad614SDennis Dalessandro grh->version_tclass_flow = old_grh->version_tclass_flow; 72878d3633bSMike Marciniszyn grh->paylen = cpu_to_be16( 72978d3633bSMike Marciniszyn (hwords - LRH_9B_DWORDS + SIZE_OF_CRC) << 2); 730f48ad614SDennis Dalessandro grh->hop_limit = 0xff; 731f48ad614SDennis Dalessandro grh->sgid = old_grh->dgid; 732f48ad614SDennis Dalessandro grh->dgid = old_grh->sgid; 733f48ad614SDennis Dalessandro ohdr = &hdr.u.l.oth; 734f48ad614SDennis Dalessandro lrh0 = HFI1_LRH_GRH; 735f48ad614SDennis Dalessandro hwords += sizeof(struct ib_grh) / sizeof(u32); 736f48ad614SDennis Dalessandro } else { 737f48ad614SDennis Dalessandro ohdr = &hdr.u.oth; 738f48ad614SDennis Dalessandro lrh0 = HFI1_LRH_BTH; 739f48ad614SDennis Dalessandro } 740f48ad614SDennis Dalessandro 741f48ad614SDennis Dalessandro lrh0 |= (sc5 & 0xf) << 12 | sl << 4; 742f48ad614SDennis Dalessandro 743f48ad614SDennis Dalessandro bth0 = pkey | (IB_OPCODE_CNP << 24); 744f48ad614SDennis Dalessandro ohdr->bth[0] = cpu_to_be32(bth0); 745f48ad614SDennis Dalessandro 7463d591099SDon Hiatt ohdr->bth[1] = cpu_to_be32(remote_qpn | (1 << IB_BECN_SHIFT)); 747f48ad614SDennis Dalessandro ohdr->bth[2] = 0; /* PSN 0 */ 748f48ad614SDennis Dalessandro 74988733e3bSDon Hiatt hfi1_make_ib_hdr(&hdr, lrh0, hwords + SIZE_OF_CRC, dlid, slid); 750f48ad614SDennis Dalessandro plen = 2 /* PBC */ + hwords; 7517dafbab3SDon Hiatt pbc_flags |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT); 752f48ad614SDennis Dalessandro vl = sc_to_vlt(ppd->dd, sc5); 753f48ad614SDennis Dalessandro pbc = create_pbc(ppd, pbc_flags, qp->srate_mbps, vl, plen); 754f48ad614SDennis Dalessandro if (ctxt) { 755f48ad614SDennis Dalessandro pbuf = sc_buffer_alloc(ctxt, plen, NULL, NULL); 756f48ad614SDennis Dalessandro if (pbuf) 757f48ad614SDennis Dalessandro ppd->dd->pio_inline_send(ppd->dd, pbuf, pbc, 758f48ad614SDennis Dalessandro &hdr, hwords); 759f48ad614SDennis Dalessandro } 760f48ad614SDennis Dalessandro } 761f48ad614SDennis Dalessandro 762f48ad614SDennis Dalessandro /* 763f48ad614SDennis Dalessandro * opa_smp_check() - Do the regular pkey checking, and the additional 764f3809209SJianxin Xiong * checks for SMPs specified in OPAv1 rev 1.0, 9/19/2016 update, section 765f3809209SJianxin Xiong * 9.10.25 ("SMA Packet Checks"). 766f48ad614SDennis Dalessandro * 767f48ad614SDennis Dalessandro * Note that: 768f48ad614SDennis Dalessandro * - Checks are done using the pkey directly from the packet's BTH, 769f48ad614SDennis Dalessandro * and specifically _not_ the pkey that we attach to the completion, 770f48ad614SDennis Dalessandro * which may be different. 771f48ad614SDennis Dalessandro * - These checks are specifically for "non-local" SMPs (i.e., SMPs 772f48ad614SDennis Dalessandro * which originated on another node). SMPs which are sent from, and 773f48ad614SDennis Dalessandro * destined to this node are checked in opa_local_smp_check(). 774f48ad614SDennis Dalessandro * 775f48ad614SDennis Dalessandro * At the point where opa_smp_check() is called, we know: 776f48ad614SDennis Dalessandro * - destination QP is QP0 777f48ad614SDennis Dalessandro * 778f48ad614SDennis Dalessandro * opa_smp_check() returns 0 if all checks succeed, 1 otherwise. 779f48ad614SDennis Dalessandro */ 780f48ad614SDennis Dalessandro static int opa_smp_check(struct hfi1_ibport *ibp, u16 pkey, u8 sc5, 781f48ad614SDennis Dalessandro struct rvt_qp *qp, u16 slid, struct opa_smp *smp) 782f48ad614SDennis Dalessandro { 783f48ad614SDennis Dalessandro struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 784f48ad614SDennis Dalessandro 785f48ad614SDennis Dalessandro /* 786f48ad614SDennis Dalessandro * I don't think it's possible for us to get here with sc != 0xf, 787f48ad614SDennis Dalessandro * but check it to be certain. 788f48ad614SDennis Dalessandro */ 789f48ad614SDennis Dalessandro if (sc5 != 0xf) 790f48ad614SDennis Dalessandro return 1; 791f48ad614SDennis Dalessandro 792f48ad614SDennis Dalessandro if (rcv_pkey_check(ppd, pkey, sc5, slid)) 793f48ad614SDennis Dalessandro return 1; 794f48ad614SDennis Dalessandro 795f48ad614SDennis Dalessandro /* 796f48ad614SDennis Dalessandro * At this point we know (and so don't need to check again) that 797f48ad614SDennis Dalessandro * the pkey is either LIM_MGMT_P_KEY, or FULL_MGMT_P_KEY 798f48ad614SDennis Dalessandro * (see ingress_pkey_check). 799f48ad614SDennis Dalessandro */ 800f48ad614SDennis Dalessandro if (smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE && 801f48ad614SDennis Dalessandro smp->mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED) { 802f48ad614SDennis Dalessandro ingress_pkey_table_fail(ppd, pkey, slid); 803f48ad614SDennis Dalessandro return 1; 804f48ad614SDennis Dalessandro } 805f48ad614SDennis Dalessandro 806f48ad614SDennis Dalessandro /* 807f48ad614SDennis Dalessandro * SMPs fall into one of four (disjoint) categories: 808f3809209SJianxin Xiong * SMA request, SMA response, SMA trap, or SMA trap repress. 809f3809209SJianxin Xiong * Our response depends, in part, on which type of SMP we're 810f3809209SJianxin Xiong * processing. 811f48ad614SDennis Dalessandro * 812f3809209SJianxin Xiong * If this is an SMA response, skip the check here. 813f3809209SJianxin Xiong * 814f3809209SJianxin Xiong * If this is an SMA request or SMA trap repress: 815f3809209SJianxin Xiong * - pkey != FULL_MGMT_P_KEY => 816f48ad614SDennis Dalessandro * increment port recv constraint errors, drop MAD 817f3809209SJianxin Xiong * 818f3809209SJianxin Xiong * Otherwise: 819f3809209SJianxin Xiong * - accept if the port is running an SM 820f3809209SJianxin Xiong * - drop MAD if it's an SMA trap 821f3809209SJianxin Xiong * - pkey == FULL_MGMT_P_KEY => 822f3809209SJianxin Xiong * reply with unsupported method 823f48ad614SDennis Dalessandro * - pkey != FULL_MGMT_P_KEY => 824f48ad614SDennis Dalessandro * increment port recv constraint errors, drop MAD 825f48ad614SDennis Dalessandro */ 826f48ad614SDennis Dalessandro switch (smp->method) { 827f3809209SJianxin Xiong case IB_MGMT_METHOD_GET_RESP: 828f3809209SJianxin Xiong case IB_MGMT_METHOD_REPORT_RESP: 829f3809209SJianxin Xiong break; 830f48ad614SDennis Dalessandro case IB_MGMT_METHOD_GET: 831f48ad614SDennis Dalessandro case IB_MGMT_METHOD_SET: 832f48ad614SDennis Dalessandro case IB_MGMT_METHOD_REPORT: 833f48ad614SDennis Dalessandro case IB_MGMT_METHOD_TRAP_REPRESS: 834f48ad614SDennis Dalessandro if (pkey != FULL_MGMT_P_KEY) { 835f48ad614SDennis Dalessandro ingress_pkey_table_fail(ppd, pkey, slid); 836f48ad614SDennis Dalessandro return 1; 837f48ad614SDennis Dalessandro } 838f48ad614SDennis Dalessandro break; 839f3809209SJianxin Xiong default: 840f48ad614SDennis Dalessandro if (ibp->rvp.port_cap_flags & IB_PORT_SM) 841f48ad614SDennis Dalessandro return 0; 842f3809209SJianxin Xiong if (smp->method == IB_MGMT_METHOD_TRAP) 843f3809209SJianxin Xiong return 1; 844f48ad614SDennis Dalessandro if (pkey == FULL_MGMT_P_KEY) { 845f48ad614SDennis Dalessandro smp->status |= IB_SMP_UNSUP_METHOD; 846f48ad614SDennis Dalessandro return 0; 847f48ad614SDennis Dalessandro } 848f48ad614SDennis Dalessandro ingress_pkey_table_fail(ppd, pkey, slid); 849f48ad614SDennis Dalessandro return 1; 850f48ad614SDennis Dalessandro } 851f48ad614SDennis Dalessandro return 0; 852f48ad614SDennis Dalessandro } 853f48ad614SDennis Dalessandro 854f48ad614SDennis Dalessandro /** 855f48ad614SDennis Dalessandro * hfi1_ud_rcv - receive an incoming UD packet 856f48ad614SDennis Dalessandro * @ibp: the port the packet came in on 857f48ad614SDennis Dalessandro * @hdr: the packet header 858f48ad614SDennis Dalessandro * @rcv_flags: flags relevant to rcv processing 859f48ad614SDennis Dalessandro * @data: the packet data 860f48ad614SDennis Dalessandro * @tlen: the packet length 861f48ad614SDennis Dalessandro * @qp: the QP the packet came on 862f48ad614SDennis Dalessandro * 863f48ad614SDennis Dalessandro * This is called from qp_rcv() to process an incoming UD packet 864f48ad614SDennis Dalessandro * for the given QP. 865f48ad614SDennis Dalessandro * Called at interrupt level. 866f48ad614SDennis Dalessandro */ 867f48ad614SDennis Dalessandro void hfi1_ud_rcv(struct hfi1_packet *packet) 868f48ad614SDennis Dalessandro { 869f48ad614SDennis Dalessandro u32 hdrsize = packet->hlen; 870f48ad614SDennis Dalessandro struct ib_wc wc; 871f48ad614SDennis Dalessandro u32 src_qp; 8729039746cSDon Hiatt u16 pkey; 873f48ad614SDennis Dalessandro int mgmt_pkey_idx = -1; 874f3e862cbSSebastian Sanchez struct hfi1_ibport *ibp = rcd_to_iport(packet->rcd); 87589c057caSDasaratharaman Chandramouli struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 87672c07e2bSDon Hiatt void *data = packet->payload; 877f48ad614SDennis Dalessandro u32 tlen = packet->tlen; 878f48ad614SDennis Dalessandro struct rvt_qp *qp = packet->qp; 87988733e3bSDon Hiatt u8 sc5 = packet->sc; 8809039746cSDon Hiatt u8 sl_from_sc; 8819039746cSDon Hiatt u8 opcode = packet->opcode; 8829039746cSDon Hiatt u8 sl = packet->sl; 8839039746cSDon Hiatt u32 dlid = packet->dlid; 8849039746cSDon Hiatt u32 slid = packet->slid; 88588733e3bSDon Hiatt u8 extra_bytes; 88681cd3891SDon Hiatt u8 l4 = 0; 88788733e3bSDon Hiatt bool dlid_is_permissive; 88888733e3bSDon Hiatt bool slid_is_permissive; 88981cd3891SDon Hiatt bool solicited = false; 890f48ad614SDennis Dalessandro 89188733e3bSDon Hiatt extra_bytes = packet->pad + packet->extra_byte + (SIZE_OF_CRC << 2); 89288733e3bSDon Hiatt 89388733e3bSDon Hiatt if (packet->etype == RHF_RCV_TYPE_BYPASS) { 89488733e3bSDon Hiatt u32 permissive_lid = 89588733e3bSDon Hiatt opa_get_lid(be32_to_cpu(OPA_LID_PERMISSIVE), 16B); 89688733e3bSDon Hiatt 89781cd3891SDon Hiatt l4 = hfi1_16B_get_l4(packet->hdr); 89888733e3bSDon Hiatt pkey = hfi1_16B_get_pkey(packet->hdr); 89988733e3bSDon Hiatt dlid_is_permissive = (dlid == permissive_lid); 90088733e3bSDon Hiatt slid_is_permissive = (slid == permissive_lid); 90188733e3bSDon Hiatt } else { 90281cd3891SDon Hiatt pkey = ib_bth_get_pkey(packet->ohdr); 90388733e3bSDon Hiatt dlid_is_permissive = (dlid == be16_to_cpu(IB_LID_PERMISSIVE)); 90488733e3bSDon Hiatt slid_is_permissive = (slid == be16_to_cpu(IB_LID_PERMISSIVE)); 90588733e3bSDon Hiatt } 90689c057caSDasaratharaman Chandramouli sl_from_sc = ibp->sc_to_sl[sc5]; 907f48ad614SDennis Dalessandro 90881cd3891SDon Hiatt if (likely(l4 != OPA_16B_L4_FM)) { 90981cd3891SDon Hiatt src_qp = ib_get_sqpn(packet->ohdr); 91081cd3891SDon Hiatt solicited = ib_bth_is_solicited(packet->ohdr); 91181cd3891SDon Hiatt } else { 91281cd3891SDon Hiatt src_qp = hfi1_16B_get_src_qpn(packet->mgmt); 91381cd3891SDon Hiatt } 91481cd3891SDon Hiatt 9155fd2b562SMitko Haralanov process_ecn(qp, packet, (opcode != IB_OPCODE_CNP)); 916f48ad614SDennis Dalessandro /* 917f48ad614SDennis Dalessandro * Get the number of bytes the message was padded by 918f48ad614SDennis Dalessandro * and drop incomplete packets. 919f48ad614SDennis Dalessandro */ 92089c057caSDasaratharaman Chandramouli if (unlikely(tlen < (hdrsize + extra_bytes))) 921f48ad614SDennis Dalessandro goto drop; 922f48ad614SDennis Dalessandro 92389c057caSDasaratharaman Chandramouli tlen -= hdrsize + extra_bytes; 924f48ad614SDennis Dalessandro 925f48ad614SDennis Dalessandro /* 926f48ad614SDennis Dalessandro * Check that the permissive LID is only used on QP0 927f48ad614SDennis Dalessandro * and the QKEY matches (see 9.6.1.4.1 and 9.6.1.5.1). 928f48ad614SDennis Dalessandro */ 929f48ad614SDennis Dalessandro if (qp->ibqp.qp_num) { 93088733e3bSDon Hiatt if (unlikely(dlid_is_permissive || slid_is_permissive)) 931f48ad614SDennis Dalessandro goto drop; 932f48ad614SDennis Dalessandro if (qp->ibqp.qp_num > 1) { 933f48ad614SDennis Dalessandro if (unlikely(rcv_pkey_check(ppd, pkey, sc5, slid))) { 934f48ad614SDennis Dalessandro /* 935f48ad614SDennis Dalessandro * Traps will not be sent for packets dropped 936f48ad614SDennis Dalessandro * by the HW. This is fine, as sending trap 937f48ad614SDennis Dalessandro * for invalid pkeys is optional according to 938f48ad614SDennis Dalessandro * IB spec (release 1.3, section 10.9.4) 939f48ad614SDennis Dalessandro */ 94013d84914SDennis Dalessandro hfi1_bad_pkey(ibp, 94189c057caSDasaratharaman Chandramouli pkey, sl, 942f48ad614SDennis Dalessandro src_qp, qp->ibqp.qp_num, 94389c057caSDasaratharaman Chandramouli slid, dlid); 944f48ad614SDennis Dalessandro return; 945f48ad614SDennis Dalessandro } 946f48ad614SDennis Dalessandro } else { 947f48ad614SDennis Dalessandro /* GSI packet */ 948f48ad614SDennis Dalessandro mgmt_pkey_idx = hfi1_lookup_pkey_idx(ibp, pkey); 949f48ad614SDennis Dalessandro if (mgmt_pkey_idx < 0) 950f48ad614SDennis Dalessandro goto drop; 951f48ad614SDennis Dalessandro } 95281cd3891SDon Hiatt if (unlikely(l4 != OPA_16B_L4_FM && 95381cd3891SDon Hiatt ib_get_qkey(packet->ohdr) != qp->qkey)) 95481cd3891SDon Hiatt return; /* Silent drop */ 95513d84914SDennis Dalessandro 956f48ad614SDennis Dalessandro /* Drop invalid MAD packets (see 13.5.3.1). */ 957f48ad614SDennis Dalessandro if (unlikely(qp->ibqp.qp_num == 1 && 95889c057caSDasaratharaman Chandramouli (tlen > 2048 || (sc5 == 0xF)))) 959f48ad614SDennis Dalessandro goto drop; 960f48ad614SDennis Dalessandro } else { 961f48ad614SDennis Dalessandro /* Received on QP0, and so by definition, this is an SMP */ 962f48ad614SDennis Dalessandro struct opa_smp *smp = (struct opa_smp *)data; 963f48ad614SDennis Dalessandro 964f48ad614SDennis Dalessandro if (opa_smp_check(ibp, pkey, sc5, qp, slid, smp)) 965f48ad614SDennis Dalessandro goto drop; 966f48ad614SDennis Dalessandro 967f48ad614SDennis Dalessandro if (tlen > 2048) 968f48ad614SDennis Dalessandro goto drop; 96988733e3bSDon Hiatt if ((dlid_is_permissive || slid_is_permissive) && 970f48ad614SDennis Dalessandro smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 971f48ad614SDennis Dalessandro goto drop; 972f48ad614SDennis Dalessandro 973f48ad614SDennis Dalessandro /* look up SMI pkey */ 974f48ad614SDennis Dalessandro mgmt_pkey_idx = hfi1_lookup_pkey_idx(ibp, pkey); 975f48ad614SDennis Dalessandro if (mgmt_pkey_idx < 0) 976f48ad614SDennis Dalessandro goto drop; 977f48ad614SDennis Dalessandro } 978f48ad614SDennis Dalessandro 979f48ad614SDennis Dalessandro if (qp->ibqp.qp_num > 1 && 980f48ad614SDennis Dalessandro opcode == IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE) { 98181cd3891SDon Hiatt wc.ex.imm_data = packet->ohdr->u.ud.imm_data; 982f48ad614SDennis Dalessandro wc.wc_flags = IB_WC_WITH_IMM; 983f48ad614SDennis Dalessandro tlen -= sizeof(u32); 984f48ad614SDennis Dalessandro } else if (opcode == IB_OPCODE_UD_SEND_ONLY) { 985f48ad614SDennis Dalessandro wc.ex.imm_data = 0; 986f48ad614SDennis Dalessandro wc.wc_flags = 0; 987f48ad614SDennis Dalessandro } else { 988f48ad614SDennis Dalessandro goto drop; 989f48ad614SDennis Dalessandro } 990f48ad614SDennis Dalessandro 991f48ad614SDennis Dalessandro /* 992f48ad614SDennis Dalessandro * A GRH is expected to precede the data even if not 993f48ad614SDennis Dalessandro * present on the wire. 994f48ad614SDennis Dalessandro */ 995f48ad614SDennis Dalessandro wc.byte_len = tlen + sizeof(struct ib_grh); 996f48ad614SDennis Dalessandro 997f48ad614SDennis Dalessandro /* 998f48ad614SDennis Dalessandro * Get the next work request entry to find where to put the data. 999f48ad614SDennis Dalessandro */ 1000f48ad614SDennis Dalessandro if (qp->r_flags & RVT_R_REUSE_SGE) { 1001f48ad614SDennis Dalessandro qp->r_flags &= ~RVT_R_REUSE_SGE; 1002f48ad614SDennis Dalessandro } else { 1003f48ad614SDennis Dalessandro int ret; 1004f48ad614SDennis Dalessandro 1005832369faSBrian Welty ret = rvt_get_rwqe(qp, false); 1006f48ad614SDennis Dalessandro if (ret < 0) { 1007beb5a042SBrian Welty rvt_rc_error(qp, IB_WC_LOC_QP_OP_ERR); 1008f48ad614SDennis Dalessandro return; 1009f48ad614SDennis Dalessandro } 1010f48ad614SDennis Dalessandro if (!ret) { 1011f48ad614SDennis Dalessandro if (qp->ibqp.qp_num == 0) 1012f48ad614SDennis Dalessandro ibp->rvp.n_vl15_dropped++; 1013f48ad614SDennis Dalessandro return; 1014f48ad614SDennis Dalessandro } 1015f48ad614SDennis Dalessandro } 1016f48ad614SDennis Dalessandro /* Silently drop packets which are too big. */ 1017f48ad614SDennis Dalessandro if (unlikely(wc.byte_len > qp->r_len)) { 1018f48ad614SDennis Dalessandro qp->r_flags |= RVT_R_REUSE_SGE; 1019f48ad614SDennis Dalessandro goto drop; 1020f48ad614SDennis Dalessandro } 10219039746cSDon Hiatt if (packet->grh) { 102288733e3bSDon Hiatt hfi1_copy_sge(&qp->r_sge, packet->grh, 102388733e3bSDon Hiatt sizeof(struct ib_grh), true, false); 102488733e3bSDon Hiatt wc.wc_flags |= IB_WC_GRH; 102588733e3bSDon Hiatt } else if (packet->etype == RHF_RCV_TYPE_BYPASS) { 102688733e3bSDon Hiatt struct ib_grh grh; 102788733e3bSDon Hiatt /* 102888733e3bSDon Hiatt * Assuming we only created 16B on the send side 102988733e3bSDon Hiatt * if we want to use large LIDs, since GRH was stripped 103088733e3bSDon Hiatt * out when creating 16B, add back the GRH here. 103188733e3bSDon Hiatt */ 103288733e3bSDon Hiatt hfi1_make_ext_grh(packet, &grh, slid, dlid); 103388733e3bSDon Hiatt hfi1_copy_sge(&qp->r_sge, &grh, 10340128fceaSBrian Welty sizeof(struct ib_grh), true, false); 1035f48ad614SDennis Dalessandro wc.wc_flags |= IB_WC_GRH; 1036f48ad614SDennis Dalessandro } else { 10371198fceaSBrian Welty rvt_skip_sge(&qp->r_sge, sizeof(struct ib_grh), true); 1038f48ad614SDennis Dalessandro } 1039f48ad614SDennis Dalessandro hfi1_copy_sge(&qp->r_sge, data, wc.byte_len - sizeof(struct ib_grh), 10400128fceaSBrian Welty true, false); 1041f48ad614SDennis Dalessandro rvt_put_ss(&qp->r_sge); 1042f48ad614SDennis Dalessandro if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags)) 1043f48ad614SDennis Dalessandro return; 1044f48ad614SDennis Dalessandro wc.wr_id = qp->r_wr_id; 1045f48ad614SDennis Dalessandro wc.status = IB_WC_SUCCESS; 1046f48ad614SDennis Dalessandro wc.opcode = IB_WC_RECV; 1047f48ad614SDennis Dalessandro wc.vendor_err = 0; 1048f48ad614SDennis Dalessandro wc.qp = &qp->ibqp; 1049f48ad614SDennis Dalessandro wc.src_qp = src_qp; 1050f48ad614SDennis Dalessandro 1051f48ad614SDennis Dalessandro if (qp->ibqp.qp_type == IB_QPT_GSI || 1052f48ad614SDennis Dalessandro qp->ibqp.qp_type == IB_QPT_SMI) { 1053f48ad614SDennis Dalessandro if (mgmt_pkey_idx < 0) { 1054f48ad614SDennis Dalessandro if (net_ratelimit()) { 1055f48ad614SDennis Dalessandro struct hfi1_devdata *dd = ppd->dd; 1056f48ad614SDennis Dalessandro 1057f48ad614SDennis Dalessandro dd_dev_err(dd, "QP type %d mgmt_pkey_idx < 0 and packet not dropped???\n", 1058f48ad614SDennis Dalessandro qp->ibqp.qp_type); 1059f48ad614SDennis Dalessandro mgmt_pkey_idx = 0; 1060f48ad614SDennis Dalessandro } 1061f48ad614SDennis Dalessandro } 1062f48ad614SDennis Dalessandro wc.pkey_index = (unsigned)mgmt_pkey_idx; 1063f48ad614SDennis Dalessandro } else { 1064f48ad614SDennis Dalessandro wc.pkey_index = 0; 1065f48ad614SDennis Dalessandro } 106688733e3bSDon Hiatt if (slid_is_permissive) 106788733e3bSDon Hiatt slid = be32_to_cpu(OPA_LID_PERMISSIVE); 1068b64581adSDon Hiatt wc.slid = slid & U16_MAX; 106989c057caSDasaratharaman Chandramouli wc.sl = sl_from_sc; 1070f48ad614SDennis Dalessandro 1071f48ad614SDennis Dalessandro /* 1072f48ad614SDennis Dalessandro * Save the LMC lower bits if the destination LID is a unicast LID. 1073f48ad614SDennis Dalessandro */ 107488733e3bSDon Hiatt wc.dlid_path_bits = hfi1_check_mcast(dlid) ? 0 : 1075f48ad614SDennis Dalessandro dlid & ((1 << ppd_from_ibp(ibp)->lmc) - 1); 1076f48ad614SDennis Dalessandro wc.port_num = qp->port_num; 1077f48ad614SDennis Dalessandro /* Signal completion event if the solicited bit is set. */ 107881cd3891SDon Hiatt rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc, solicited); 1079f48ad614SDennis Dalessandro return; 1080f48ad614SDennis Dalessandro 1081f48ad614SDennis Dalessandro drop: 1082f48ad614SDennis Dalessandro ibp->rvp.n_pkt_drops++; 1083f48ad614SDennis Dalessandro } 1084