1f48ad614SDennis Dalessandro /* 2b697d7d8SMichael 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" 54fe4dd423SMitko Haralanov #include "trace_ibhdrs.h" 55f48ad614SDennis Dalessandro #include "qp.h" 56f48ad614SDennis Dalessandro 5788733e3bSDon Hiatt /* We support only two types - 9B and 16B for now */ 5888733e3bSDon Hiatt static const hfi1_make_req hfi1_make_ud_req_tbl[2] = { 5988733e3bSDon Hiatt [HFI1_PKT_TYPE_9B] = &hfi1_make_ud_req_9B, 6088733e3bSDon Hiatt [HFI1_PKT_TYPE_16B] = &hfi1_make_ud_req_16B 6188733e3bSDon Hiatt }; 6288733e3bSDon Hiatt 63f48ad614SDennis Dalessandro /** 64f48ad614SDennis Dalessandro * ud_loopback - handle send on loopback QPs 65f48ad614SDennis Dalessandro * @sqp: the sending QP 66f48ad614SDennis Dalessandro * @swqe: the send work request 67f48ad614SDennis Dalessandro * 68f48ad614SDennis Dalessandro * This is called from hfi1_make_ud_req() to forward a WQE addressed 69f48ad614SDennis Dalessandro * to the same HFI. 70f48ad614SDennis Dalessandro * Note that the receive interrupt handler may be calling hfi1_ud_rcv() 71f48ad614SDennis Dalessandro * while this is being called. 72f48ad614SDennis Dalessandro */ 73f48ad614SDennis Dalessandro static void ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe) 74f48ad614SDennis Dalessandro { 75f48ad614SDennis Dalessandro struct hfi1_ibport *ibp = to_iport(sqp->ibqp.device, sqp->port_num); 76f48ad614SDennis Dalessandro struct hfi1_pportdata *ppd; 7788733e3bSDon Hiatt struct hfi1_qp_priv *priv = sqp->priv; 78f48ad614SDennis Dalessandro struct rvt_qp *qp; 7990898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr; 80f48ad614SDennis Dalessandro unsigned long flags; 81f48ad614SDennis Dalessandro struct rvt_sge_state ssge; 82f48ad614SDennis Dalessandro struct rvt_sge *sge; 83f48ad614SDennis Dalessandro struct ib_wc wc; 84f48ad614SDennis Dalessandro u32 length; 85f48ad614SDennis Dalessandro enum ib_qp_type sqptype, dqptype; 86f48ad614SDennis Dalessandro 87f48ad614SDennis Dalessandro rcu_read_lock(); 88f48ad614SDennis Dalessandro 89f48ad614SDennis Dalessandro qp = rvt_lookup_qpn(ib_to_rvt(sqp->ibqp.device), &ibp->rvp, 90f48ad614SDennis Dalessandro swqe->ud_wr.remote_qpn); 91f48ad614SDennis Dalessandro if (!qp) { 92f48ad614SDennis Dalessandro ibp->rvp.n_pkt_drops++; 93f48ad614SDennis Dalessandro rcu_read_unlock(); 94f48ad614SDennis Dalessandro return; 95f48ad614SDennis Dalessandro } 96f48ad614SDennis Dalessandro 97f48ad614SDennis Dalessandro sqptype = sqp->ibqp.qp_type == IB_QPT_GSI ? 98f48ad614SDennis Dalessandro IB_QPT_UD : sqp->ibqp.qp_type; 99f48ad614SDennis Dalessandro dqptype = qp->ibqp.qp_type == IB_QPT_GSI ? 100f48ad614SDennis Dalessandro IB_QPT_UD : qp->ibqp.qp_type; 101f48ad614SDennis Dalessandro 102f48ad614SDennis Dalessandro if (dqptype != sqptype || 103f48ad614SDennis Dalessandro !(ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK)) { 104f48ad614SDennis Dalessandro ibp->rvp.n_pkt_drops++; 105f48ad614SDennis Dalessandro goto drop; 106f48ad614SDennis Dalessandro } 107f48ad614SDennis Dalessandro 108f48ad614SDennis Dalessandro ah_attr = &ibah_to_rvtah(swqe->ud_wr.ah)->attr; 109f48ad614SDennis Dalessandro ppd = ppd_from_ibp(ibp); 110f48ad614SDennis Dalessandro 111f48ad614SDennis Dalessandro if (qp->ibqp.qp_num > 1) { 112f48ad614SDennis Dalessandro u16 pkey; 11388733e3bSDon Hiatt u32 slid; 114d8966fcdSDasaratharaman Chandramouli u8 sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)]; 115f48ad614SDennis Dalessandro 116f48ad614SDennis Dalessandro pkey = hfi1_get_pkey(ibp, sqp->s_pkey_index); 117d8966fcdSDasaratharaman Chandramouli slid = ppd->lid | (rdma_ah_get_path_bits(ah_attr) & 118f48ad614SDennis Dalessandro ((1 << ppd->lmc) - 1)); 119f48ad614SDennis Dalessandro if (unlikely(ingress_pkey_check(ppd, pkey, sc5, 1205786adf3SDon Hiatt qp->s_pkey_index, 1215786adf3SDon Hiatt slid, false))) { 12213d84914SDennis Dalessandro hfi1_bad_pkey(ibp, pkey, 123d8966fcdSDasaratharaman Chandramouli rdma_ah_get_sl(ah_attr), 124f48ad614SDennis Dalessandro sqp->ibqp.qp_num, qp->ibqp.qp_num, 125d8966fcdSDasaratharaman Chandramouli slid, rdma_ah_get_dlid(ah_attr)); 126f48ad614SDennis Dalessandro goto drop; 127f48ad614SDennis Dalessandro } 128f48ad614SDennis Dalessandro } 129f48ad614SDennis Dalessandro 130f48ad614SDennis Dalessandro /* 131f48ad614SDennis Dalessandro * Check that the qkey matches (except for QP0, see 9.6.1.4.1). 132f48ad614SDennis Dalessandro * Qkeys with the high order bit set mean use the 133f48ad614SDennis Dalessandro * qkey from the QP context instead of the WR (see 10.2.5). 134f48ad614SDennis Dalessandro */ 135f48ad614SDennis Dalessandro if (qp->ibqp.qp_num) { 136f48ad614SDennis Dalessandro u32 qkey; 137f48ad614SDennis Dalessandro 138f48ad614SDennis Dalessandro qkey = (int)swqe->ud_wr.remote_qkey < 0 ? 139f48ad614SDennis Dalessandro sqp->qkey : swqe->ud_wr.remote_qkey; 14013d84914SDennis Dalessandro if (unlikely(qkey != qp->qkey)) 14113d84914SDennis Dalessandro goto drop; /* silently drop per IBTA spec */ 142f48ad614SDennis Dalessandro } 143f48ad614SDennis Dalessandro 144f48ad614SDennis Dalessandro /* 145f48ad614SDennis Dalessandro * A GRH is expected to precede the data even if not 146f48ad614SDennis Dalessandro * present on the wire. 147f48ad614SDennis Dalessandro */ 148f48ad614SDennis Dalessandro length = swqe->length; 149f48ad614SDennis Dalessandro memset(&wc, 0, sizeof(wc)); 150f48ad614SDennis Dalessandro wc.byte_len = length + sizeof(struct ib_grh); 151f48ad614SDennis Dalessandro 152f48ad614SDennis Dalessandro if (swqe->wr.opcode == IB_WR_SEND_WITH_IMM) { 153f48ad614SDennis Dalessandro wc.wc_flags = IB_WC_WITH_IMM; 154f48ad614SDennis Dalessandro wc.ex.imm_data = swqe->wr.ex.imm_data; 155f48ad614SDennis Dalessandro } 156f48ad614SDennis Dalessandro 157f48ad614SDennis Dalessandro spin_lock_irqsave(&qp->r_lock, flags); 158f48ad614SDennis Dalessandro 159f48ad614SDennis Dalessandro /* 160f48ad614SDennis Dalessandro * Get the next work request entry to find where to put the data. 161f48ad614SDennis Dalessandro */ 162f48ad614SDennis Dalessandro if (qp->r_flags & RVT_R_REUSE_SGE) { 163f48ad614SDennis Dalessandro qp->r_flags &= ~RVT_R_REUSE_SGE; 164f48ad614SDennis Dalessandro } else { 165f48ad614SDennis Dalessandro int ret; 166f48ad614SDennis Dalessandro 167832369faSBrian Welty ret = rvt_get_rwqe(qp, false); 168f48ad614SDennis Dalessandro if (ret < 0) { 169beb5a042SBrian Welty rvt_rc_error(qp, IB_WC_LOC_QP_OP_ERR); 170f48ad614SDennis Dalessandro goto bail_unlock; 171f48ad614SDennis Dalessandro } 172f48ad614SDennis Dalessandro if (!ret) { 173f48ad614SDennis Dalessandro if (qp->ibqp.qp_num == 0) 174f48ad614SDennis Dalessandro ibp->rvp.n_vl15_dropped++; 175f48ad614SDennis Dalessandro goto bail_unlock; 176f48ad614SDennis Dalessandro } 177f48ad614SDennis Dalessandro } 178f48ad614SDennis Dalessandro /* Silently drop packets which are too big. */ 179f48ad614SDennis Dalessandro if (unlikely(wc.byte_len > qp->r_len)) { 180f48ad614SDennis Dalessandro qp->r_flags |= RVT_R_REUSE_SGE; 181f48ad614SDennis Dalessandro ibp->rvp.n_pkt_drops++; 182f48ad614SDennis Dalessandro goto bail_unlock; 183f48ad614SDennis Dalessandro } 184f48ad614SDennis Dalessandro 185d8966fcdSDasaratharaman Chandramouli if (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) { 186527dbf12SDasaratharaman Chandramouli struct ib_grh grh; 18788733e3bSDon Hiatt struct ib_global_route grd = *(rdma_ah_read_grh(ah_attr)); 188527dbf12SDasaratharaman Chandramouli 18988733e3bSDon Hiatt /* 19088733e3bSDon Hiatt * For loopback packets with extended LIDs, the 19188733e3bSDon Hiatt * sgid_index in the GRH is 0 and the dgid is 19288733e3bSDon Hiatt * OPA GID of the sender. While creating a response 19388733e3bSDon Hiatt * to the loopback packet, IB core creates the new 19488733e3bSDon Hiatt * sgid_index from the DGID and that will be the 19588733e3bSDon Hiatt * OPA_GID_INDEX. The new dgid is from the sgid 19688733e3bSDon Hiatt * index and that will be in the IB GID format. 19788733e3bSDon Hiatt * 19888733e3bSDon Hiatt * We now have a case where the sent packet had a 19988733e3bSDon Hiatt * different sgid_index and dgid compared to the 20088733e3bSDon Hiatt * one that was received in response. 20188733e3bSDon Hiatt * 20288733e3bSDon Hiatt * Fix this inconsistency. 20388733e3bSDon Hiatt */ 20488733e3bSDon Hiatt if (priv->hdr_type == HFI1_PKT_TYPE_16B) { 20588733e3bSDon Hiatt if (grd.sgid_index == 0) 20688733e3bSDon Hiatt grd.sgid_index = OPA_GID_INDEX; 20788733e3bSDon Hiatt 20888733e3bSDon Hiatt if (ib_is_opa_gid(&grd.dgid)) 20988733e3bSDon Hiatt grd.dgid.global.interface_id = 21088733e3bSDon Hiatt cpu_to_be64(ppd->guids[HFI1_PORT_GUID_INDEX]); 21188733e3bSDon Hiatt } 21288733e3bSDon Hiatt 21388733e3bSDon Hiatt hfi1_make_grh(ibp, &grh, &grd, 0, 0); 214019f118bSBrian Welty rvt_copy_sge(qp, &qp->r_sge, &grh, 2150128fceaSBrian Welty sizeof(grh), true, false); 216f48ad614SDennis Dalessandro wc.wc_flags |= IB_WC_GRH; 217f48ad614SDennis Dalessandro } else { 2181198fceaSBrian Welty rvt_skip_sge(&qp->r_sge, sizeof(struct ib_grh), true); 219f48ad614SDennis Dalessandro } 220f48ad614SDennis Dalessandro ssge.sg_list = swqe->sg_list + 1; 221f48ad614SDennis Dalessandro ssge.sge = *swqe->sg_list; 222f48ad614SDennis Dalessandro ssge.num_sge = swqe->wr.num_sge; 223f48ad614SDennis Dalessandro sge = &ssge.sge; 224f48ad614SDennis Dalessandro while (length) { 225db421a54SMichael J. Ruhl u32 len = rvt_get_sge_length(sge, length); 226f48ad614SDennis Dalessandro 227f48ad614SDennis Dalessandro WARN_ON_ONCE(len == 0); 228019f118bSBrian Welty rvt_copy_sge(qp, &qp->r_sge, sge->vaddr, len, true, false); 229db421a54SMichael J. Ruhl rvt_update_sge(&ssge, len, false); 230f48ad614SDennis Dalessandro length -= len; 231f48ad614SDennis Dalessandro } 232f48ad614SDennis Dalessandro rvt_put_ss(&qp->r_sge); 233f48ad614SDennis Dalessandro if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags)) 234f48ad614SDennis Dalessandro goto bail_unlock; 235f48ad614SDennis Dalessandro wc.wr_id = qp->r_wr_id; 236f48ad614SDennis Dalessandro wc.status = IB_WC_SUCCESS; 237f48ad614SDennis Dalessandro wc.opcode = IB_WC_RECV; 238f48ad614SDennis Dalessandro wc.qp = &qp->ibqp; 239f48ad614SDennis Dalessandro wc.src_qp = sqp->ibqp.qp_num; 240f48ad614SDennis Dalessandro if (qp->ibqp.qp_type == IB_QPT_GSI || qp->ibqp.qp_type == IB_QPT_SMI) { 241f48ad614SDennis Dalessandro if (sqp->ibqp.qp_type == IB_QPT_GSI || 242f48ad614SDennis Dalessandro sqp->ibqp.qp_type == IB_QPT_SMI) 243f48ad614SDennis Dalessandro wc.pkey_index = swqe->ud_wr.pkey_index; 244f48ad614SDennis Dalessandro else 245f48ad614SDennis Dalessandro wc.pkey_index = sqp->s_pkey_index; 246f48ad614SDennis Dalessandro } else { 247f48ad614SDennis Dalessandro wc.pkey_index = 0; 248f48ad614SDennis Dalessandro } 249b64581adSDon Hiatt wc.slid = (ppd->lid | (rdma_ah_get_path_bits(ah_attr) & 250b64581adSDon Hiatt ((1 << ppd->lmc) - 1))) & U16_MAX; 251f48ad614SDennis Dalessandro /* Check for loopback when the port lid is not set */ 252f48ad614SDennis Dalessandro if (wc.slid == 0 && sqp->ibqp.qp_type == IB_QPT_GSI) 253f48ad614SDennis Dalessandro wc.slid = be16_to_cpu(IB_LID_PERMISSIVE); 254d8966fcdSDasaratharaman Chandramouli wc.sl = rdma_ah_get_sl(ah_attr); 255d8966fcdSDasaratharaman Chandramouli wc.dlid_path_bits = rdma_ah_get_dlid(ah_attr) & ((1 << ppd->lmc) - 1); 256f48ad614SDennis Dalessandro wc.port_num = qp->port_num; 257f48ad614SDennis Dalessandro /* Signal completion event if the solicited bit is set. */ 258*5136bfeaSKamenee Arumugam rvt_recv_cq(qp, &wc, swqe->wr.send_flags & IB_SEND_SOLICITED); 259f48ad614SDennis Dalessandro ibp->rvp.n_loop_pkts++; 260f48ad614SDennis Dalessandro bail_unlock: 261f48ad614SDennis Dalessandro spin_unlock_irqrestore(&qp->r_lock, flags); 262f48ad614SDennis Dalessandro drop: 263f48ad614SDennis Dalessandro rcu_read_unlock(); 264f48ad614SDennis Dalessandro } 265f48ad614SDennis Dalessandro 26688733e3bSDon Hiatt static void hfi1_make_bth_deth(struct rvt_qp *qp, struct rvt_swqe *wqe, 26788733e3bSDon Hiatt struct ib_other_headers *ohdr, 26888733e3bSDon Hiatt u16 *pkey, u32 extra_bytes, bool bypass) 26988733e3bSDon Hiatt { 27088733e3bSDon Hiatt u32 bth0; 27188733e3bSDon Hiatt struct hfi1_ibport *ibp; 27288733e3bSDon Hiatt 27388733e3bSDon Hiatt ibp = to_iport(qp->ibqp.device, qp->port_num); 27488733e3bSDon Hiatt if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) { 27588733e3bSDon Hiatt ohdr->u.ud.imm_data = wqe->wr.ex.imm_data; 27688733e3bSDon Hiatt bth0 = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE << 24; 27788733e3bSDon Hiatt } else { 27888733e3bSDon Hiatt bth0 = IB_OPCODE_UD_SEND_ONLY << 24; 27988733e3bSDon Hiatt } 28088733e3bSDon Hiatt 28188733e3bSDon Hiatt if (wqe->wr.send_flags & IB_SEND_SOLICITED) 28288733e3bSDon Hiatt bth0 |= IB_BTH_SOLICITED; 28388733e3bSDon Hiatt bth0 |= extra_bytes << 20; 28488733e3bSDon Hiatt if (qp->ibqp.qp_type == IB_QPT_GSI || qp->ibqp.qp_type == IB_QPT_SMI) 28588733e3bSDon Hiatt *pkey = hfi1_get_pkey(ibp, wqe->ud_wr.pkey_index); 28688733e3bSDon Hiatt else 28788733e3bSDon Hiatt *pkey = hfi1_get_pkey(ibp, qp->s_pkey_index); 28888733e3bSDon Hiatt if (!bypass) 28988733e3bSDon Hiatt bth0 |= *pkey; 29088733e3bSDon Hiatt ohdr->bth[0] = cpu_to_be32(bth0); 29188733e3bSDon Hiatt ohdr->bth[1] = cpu_to_be32(wqe->ud_wr.remote_qpn); 29288733e3bSDon Hiatt ohdr->bth[2] = cpu_to_be32(mask_psn(wqe->psn)); 29388733e3bSDon Hiatt /* 29488733e3bSDon Hiatt * Qkeys with the high order bit set mean use the 29588733e3bSDon Hiatt * qkey from the QP context instead of the WR (see 10.2.5). 29688733e3bSDon Hiatt */ 29788733e3bSDon Hiatt ohdr->u.ud.deth[0] = cpu_to_be32((int)wqe->ud_wr.remote_qkey < 0 ? 29888733e3bSDon Hiatt qp->qkey : wqe->ud_wr.remote_qkey); 29988733e3bSDon Hiatt ohdr->u.ud.deth[1] = cpu_to_be32(qp->ibqp.qp_num); 30088733e3bSDon Hiatt } 30188733e3bSDon Hiatt 30288733e3bSDon Hiatt void hfi1_make_ud_req_9B(struct rvt_qp *qp, struct hfi1_pkt_state *ps, 30388733e3bSDon Hiatt struct rvt_swqe *wqe) 30488733e3bSDon Hiatt { 30588733e3bSDon Hiatt u32 nwords, extra_bytes; 30688733e3bSDon Hiatt u16 len, slid, dlid, pkey; 30788733e3bSDon Hiatt u16 lrh0 = 0; 30888733e3bSDon Hiatt u8 sc5; 30988733e3bSDon Hiatt struct hfi1_qp_priv *priv = qp->priv; 31088733e3bSDon Hiatt struct ib_other_headers *ohdr; 31188733e3bSDon Hiatt struct rdma_ah_attr *ah_attr; 31288733e3bSDon Hiatt struct hfi1_pportdata *ppd; 31388733e3bSDon Hiatt struct hfi1_ibport *ibp; 31488733e3bSDon Hiatt struct ib_grh *grh; 31588733e3bSDon Hiatt 31688733e3bSDon Hiatt ibp = to_iport(qp->ibqp.device, qp->port_num); 31788733e3bSDon Hiatt ppd = ppd_from_ibp(ibp); 31888733e3bSDon Hiatt ah_attr = &ibah_to_rvtah(wqe->ud_wr.ah)->attr; 31988733e3bSDon Hiatt 32088733e3bSDon Hiatt extra_bytes = -wqe->length & 3; 32188733e3bSDon Hiatt nwords = ((wqe->length + extra_bytes) >> 2) + SIZE_OF_CRC; 32288733e3bSDon Hiatt /* header size in dwords LRH+BTH+DETH = (8+12+8)/4. */ 3239636258fSMitko Haralanov ps->s_txreq->hdr_dwords = 7; 32488733e3bSDon Hiatt if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) 3259636258fSMitko Haralanov ps->s_txreq->hdr_dwords++; 32688733e3bSDon Hiatt 32788733e3bSDon Hiatt if (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) { 32888733e3bSDon Hiatt grh = &ps->s_txreq->phdr.hdr.ibh.u.l.grh; 3299636258fSMitko Haralanov ps->s_txreq->hdr_dwords += 3309636258fSMitko Haralanov hfi1_make_grh(ibp, grh, rdma_ah_read_grh(ah_attr), 33178d3633bSMike Marciniszyn ps->s_txreq->hdr_dwords - LRH_9B_DWORDS, 33278d3633bSMike Marciniszyn nwords); 33388733e3bSDon Hiatt lrh0 = HFI1_LRH_GRH; 33488733e3bSDon Hiatt ohdr = &ps->s_txreq->phdr.hdr.ibh.u.l.oth; 33588733e3bSDon Hiatt } else { 33688733e3bSDon Hiatt lrh0 = HFI1_LRH_BTH; 33788733e3bSDon Hiatt ohdr = &ps->s_txreq->phdr.hdr.ibh.u.oth; 33888733e3bSDon Hiatt } 33988733e3bSDon Hiatt 34088733e3bSDon Hiatt sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)]; 34188733e3bSDon Hiatt lrh0 |= (rdma_ah_get_sl(ah_attr) & 0xf) << 4; 34288733e3bSDon Hiatt if (qp->ibqp.qp_type == IB_QPT_SMI) { 34388733e3bSDon Hiatt lrh0 |= 0xF000; /* Set VL (see ch. 13.5.3.1) */ 34488733e3bSDon Hiatt priv->s_sc = 0xf; 34588733e3bSDon Hiatt } else { 34688733e3bSDon Hiatt lrh0 |= (sc5 & 0xf) << 12; 34788733e3bSDon Hiatt priv->s_sc = sc5; 34888733e3bSDon Hiatt } 34988733e3bSDon Hiatt 35088733e3bSDon Hiatt dlid = opa_get_lid(rdma_ah_get_dlid(ah_attr), 9B); 35188733e3bSDon Hiatt if (dlid == be16_to_cpu(IB_LID_PERMISSIVE)) { 35288733e3bSDon Hiatt slid = be16_to_cpu(IB_LID_PERMISSIVE); 35388733e3bSDon Hiatt } else { 35488733e3bSDon Hiatt u16 lid = (u16)ppd->lid; 35588733e3bSDon Hiatt 35688733e3bSDon Hiatt if (lid) { 35788733e3bSDon Hiatt lid |= rdma_ah_get_path_bits(ah_attr) & 35888733e3bSDon Hiatt ((1 << ppd->lmc) - 1); 35988733e3bSDon Hiatt slid = lid; 36088733e3bSDon Hiatt } else { 36188733e3bSDon Hiatt slid = be16_to_cpu(IB_LID_PERMISSIVE); 36288733e3bSDon Hiatt } 36388733e3bSDon Hiatt } 36488733e3bSDon Hiatt hfi1_make_bth_deth(qp, wqe, ohdr, &pkey, extra_bytes, false); 3659636258fSMitko Haralanov len = ps->s_txreq->hdr_dwords + nwords; 36688733e3bSDon Hiatt 36788733e3bSDon Hiatt /* Setup the packet */ 36888733e3bSDon Hiatt ps->s_txreq->phdr.hdr.hdr_type = HFI1_PKT_TYPE_9B; 36988733e3bSDon Hiatt hfi1_make_ib_hdr(&ps->s_txreq->phdr.hdr.ibh, 37088733e3bSDon Hiatt lrh0, len, dlid, slid); 37188733e3bSDon Hiatt } 37288733e3bSDon Hiatt 37388733e3bSDon Hiatt void hfi1_make_ud_req_16B(struct rvt_qp *qp, struct hfi1_pkt_state *ps, 37488733e3bSDon Hiatt struct rvt_swqe *wqe) 37588733e3bSDon Hiatt { 37688733e3bSDon Hiatt struct hfi1_qp_priv *priv = qp->priv; 37788733e3bSDon Hiatt struct ib_other_headers *ohdr; 37888733e3bSDon Hiatt struct rdma_ah_attr *ah_attr; 37988733e3bSDon Hiatt struct hfi1_pportdata *ppd; 38088733e3bSDon Hiatt struct hfi1_ibport *ibp; 38188733e3bSDon Hiatt u32 dlid, slid, nwords, extra_bytes; 38281cd3891SDon Hiatt u32 dest_qp = wqe->ud_wr.remote_qpn; 38381cd3891SDon Hiatt u32 src_qp = qp->ibqp.qp_num; 38488733e3bSDon Hiatt u16 len, pkey; 38588733e3bSDon Hiatt u8 l4, sc5; 38681cd3891SDon Hiatt bool is_mgmt = false; 38788733e3bSDon Hiatt 38888733e3bSDon Hiatt ibp = to_iport(qp->ibqp.device, qp->port_num); 38988733e3bSDon Hiatt ppd = ppd_from_ibp(ibp); 39088733e3bSDon Hiatt ah_attr = &ibah_to_rvtah(wqe->ud_wr.ah)->attr; 39181cd3891SDon Hiatt 39281cd3891SDon Hiatt /* 39381cd3891SDon Hiatt * Build 16B Management Packet if either the destination 39481cd3891SDon Hiatt * or source queue pair number is 0 or 1. 39581cd3891SDon Hiatt */ 39681cd3891SDon Hiatt if (dest_qp == 0 || src_qp == 0 || dest_qp == 1 || src_qp == 1) { 39781cd3891SDon Hiatt /* header size in dwords 16B LRH+L4_FM = (16+8)/4. */ 39881cd3891SDon Hiatt ps->s_txreq->hdr_dwords = 6; 39981cd3891SDon Hiatt is_mgmt = true; 40081cd3891SDon Hiatt } else { 40188733e3bSDon Hiatt /* header size in dwords 16B LRH+BTH+DETH = (16+12+8)/4. */ 4029636258fSMitko Haralanov ps->s_txreq->hdr_dwords = 9; 40388733e3bSDon Hiatt if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) 4049636258fSMitko Haralanov ps->s_txreq->hdr_dwords++; 40581cd3891SDon Hiatt } 40688733e3bSDon Hiatt 40788733e3bSDon Hiatt /* SW provides space for CRC and LT for bypass packets. */ 4089636258fSMitko Haralanov extra_bytes = hfi1_get_16b_padding((ps->s_txreq->hdr_dwords << 2), 40988733e3bSDon Hiatt wqe->length); 41088733e3bSDon Hiatt nwords = ((wqe->length + extra_bytes + SIZE_OF_LT) >> 2) + SIZE_OF_CRC; 41188733e3bSDon Hiatt 41288733e3bSDon Hiatt if ((rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) && 41388733e3bSDon Hiatt hfi1_check_mcast(rdma_ah_get_dlid(ah_attr))) { 41488733e3bSDon Hiatt struct ib_grh *grh; 41588733e3bSDon Hiatt struct ib_global_route *grd = rdma_ah_retrieve_grh(ah_attr); 41688733e3bSDon Hiatt /* 41788733e3bSDon Hiatt * Ensure OPA GIDs are transformed to IB gids 41888733e3bSDon Hiatt * before creating the GRH. 41988733e3bSDon Hiatt */ 42088733e3bSDon Hiatt if (grd->sgid_index == OPA_GID_INDEX) { 42188733e3bSDon Hiatt dd_dev_warn(ppd->dd, "Bad sgid_index. sgid_index: %d\n", 42288733e3bSDon Hiatt grd->sgid_index); 42388733e3bSDon Hiatt grd->sgid_index = 0; 42488733e3bSDon Hiatt } 42588733e3bSDon Hiatt grh = &ps->s_txreq->phdr.hdr.opah.u.l.grh; 42678d3633bSMike Marciniszyn ps->s_txreq->hdr_dwords += hfi1_make_grh( 42778d3633bSMike Marciniszyn ibp, grh, grd, 42878d3633bSMike Marciniszyn ps->s_txreq->hdr_dwords - LRH_16B_DWORDS, 42978d3633bSMike Marciniszyn nwords); 43088733e3bSDon Hiatt ohdr = &ps->s_txreq->phdr.hdr.opah.u.l.oth; 43188733e3bSDon Hiatt l4 = OPA_16B_L4_IB_GLOBAL; 43288733e3bSDon Hiatt } else { 43388733e3bSDon Hiatt ohdr = &ps->s_txreq->phdr.hdr.opah.u.oth; 43488733e3bSDon Hiatt l4 = OPA_16B_L4_IB_LOCAL; 43588733e3bSDon Hiatt } 43688733e3bSDon Hiatt 43788733e3bSDon Hiatt sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)]; 43888733e3bSDon Hiatt if (qp->ibqp.qp_type == IB_QPT_SMI) 43988733e3bSDon Hiatt priv->s_sc = 0xf; 44088733e3bSDon Hiatt else 44188733e3bSDon Hiatt priv->s_sc = sc5; 44288733e3bSDon Hiatt 44388733e3bSDon Hiatt dlid = opa_get_lid(rdma_ah_get_dlid(ah_attr), 16B); 44488733e3bSDon Hiatt if (!ppd->lid) 44588733e3bSDon Hiatt slid = be32_to_cpu(OPA_LID_PERMISSIVE); 44688733e3bSDon Hiatt else 44788733e3bSDon Hiatt slid = ppd->lid | (rdma_ah_get_path_bits(ah_attr) & 44888733e3bSDon Hiatt ((1 << ppd->lmc) - 1)); 44988733e3bSDon Hiatt 45081cd3891SDon Hiatt if (is_mgmt) { 45181cd3891SDon Hiatt l4 = OPA_16B_L4_FM; 45281cd3891SDon Hiatt pkey = hfi1_get_pkey(ibp, wqe->ud_wr.pkey_index); 45381cd3891SDon Hiatt hfi1_16B_set_qpn(&ps->s_txreq->phdr.hdr.opah.u.mgmt, 45481cd3891SDon Hiatt dest_qp, src_qp); 45581cd3891SDon Hiatt } else { 45688733e3bSDon Hiatt hfi1_make_bth_deth(qp, wqe, ohdr, &pkey, extra_bytes, true); 45781cd3891SDon Hiatt } 45888733e3bSDon Hiatt /* Convert dwords to flits */ 4599636258fSMitko Haralanov len = (ps->s_txreq->hdr_dwords + nwords) >> 1; 46088733e3bSDon Hiatt 46188733e3bSDon Hiatt /* Setup the packet */ 46288733e3bSDon Hiatt ps->s_txreq->phdr.hdr.hdr_type = HFI1_PKT_TYPE_16B; 46388733e3bSDon Hiatt hfi1_make_16b_hdr(&ps->s_txreq->phdr.hdr.opah, 46488733e3bSDon Hiatt slid, dlid, len, pkey, 0, 0, l4, priv->s_sc); 46588733e3bSDon Hiatt } 46688733e3bSDon Hiatt 467f48ad614SDennis Dalessandro /** 468f48ad614SDennis Dalessandro * hfi1_make_ud_req - construct a UD request packet 469f48ad614SDennis Dalessandro * @qp: the QP 470f48ad614SDennis Dalessandro * 471f48ad614SDennis Dalessandro * Assume s_lock is held. 472f48ad614SDennis Dalessandro * 473f48ad614SDennis Dalessandro * Return 1 if constructed; otherwise, return 0. 474f48ad614SDennis Dalessandro */ 475f48ad614SDennis Dalessandro int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps) 476f48ad614SDennis Dalessandro { 477f48ad614SDennis Dalessandro struct hfi1_qp_priv *priv = qp->priv; 47890898850SDasaratharaman Chandramouli struct rdma_ah_attr *ah_attr; 479f48ad614SDennis Dalessandro struct hfi1_pportdata *ppd; 480f48ad614SDennis Dalessandro struct hfi1_ibport *ibp; 481f48ad614SDennis Dalessandro struct rvt_swqe *wqe; 482f48ad614SDennis Dalessandro int next_cur; 48388733e3bSDon Hiatt u32 lid; 484f48ad614SDennis Dalessandro 485f48ad614SDennis Dalessandro ps->s_txreq = get_txreq(ps->dev, qp); 486b697d7d8SMichael J. Ruhl if (!ps->s_txreq) 487f48ad614SDennis Dalessandro goto bail_no_tx; 488f48ad614SDennis Dalessandro 489f48ad614SDennis Dalessandro if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_NEXT_SEND_OK)) { 490f48ad614SDennis Dalessandro if (!(ib_rvt_state_ops[qp->state] & RVT_FLUSH_SEND)) 491f48ad614SDennis Dalessandro goto bail; 492f48ad614SDennis Dalessandro /* We are in the error state, flush the work request. */ 4936aa7de05SMark Rutland if (qp->s_last == READ_ONCE(qp->s_head)) 494f48ad614SDennis Dalessandro goto bail; 495f48ad614SDennis Dalessandro /* If DMAs are in progress, we can't flush immediately. */ 496f48ad614SDennis Dalessandro if (iowait_sdma_pending(&priv->s_iowait)) { 497f48ad614SDennis Dalessandro qp->s_flags |= RVT_S_WAIT_DMA; 498f48ad614SDennis Dalessandro goto bail; 499f48ad614SDennis Dalessandro } 500f48ad614SDennis Dalessandro wqe = rvt_get_swqe_ptr(qp, qp->s_last); 501116aa033SVenkata Sandeep Dhanalakota rvt_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR); 502f48ad614SDennis Dalessandro goto done_free_tx; 503f48ad614SDennis Dalessandro } 504f48ad614SDennis Dalessandro 505f48ad614SDennis Dalessandro /* see post_one_send() */ 5066aa7de05SMark Rutland if (qp->s_cur == READ_ONCE(qp->s_head)) 507f48ad614SDennis Dalessandro goto bail; 508f48ad614SDennis Dalessandro 509f48ad614SDennis Dalessandro wqe = rvt_get_swqe_ptr(qp, qp->s_cur); 510f48ad614SDennis Dalessandro next_cur = qp->s_cur + 1; 511f48ad614SDennis Dalessandro if (next_cur >= qp->s_size) 512f48ad614SDennis Dalessandro next_cur = 0; 513f48ad614SDennis Dalessandro 514f48ad614SDennis Dalessandro /* Construct the header. */ 515f48ad614SDennis Dalessandro ibp = to_iport(qp->ibqp.device, qp->port_num); 516f48ad614SDennis Dalessandro ppd = ppd_from_ibp(ibp); 517f48ad614SDennis Dalessandro ah_attr = &ibah_to_rvtah(wqe->ud_wr.ah)->attr; 51888733e3bSDon Hiatt priv->hdr_type = hfi1_get_hdr_type(ppd->lid, ah_attr); 51988733e3bSDon Hiatt if ((!hfi1_check_mcast(rdma_ah_get_dlid(ah_attr))) || 52088733e3bSDon Hiatt (rdma_ah_get_dlid(ah_attr) == be32_to_cpu(OPA_LID_PERMISSIVE))) { 521d8966fcdSDasaratharaman Chandramouli lid = rdma_ah_get_dlid(ah_attr) & ~((1 << ppd->lmc) - 1); 522f48ad614SDennis Dalessandro if (unlikely(!loopback && 52388733e3bSDon Hiatt ((lid == ppd->lid) || 52488733e3bSDon Hiatt ((lid == be32_to_cpu(OPA_LID_PERMISSIVE)) && 52588733e3bSDon Hiatt (qp->ibqp.qp_type == IB_QPT_GSI))))) { 526f48ad614SDennis Dalessandro unsigned long tflags = ps->flags; 527f48ad614SDennis Dalessandro /* 528f48ad614SDennis Dalessandro * If DMAs are in progress, we can't generate 529f48ad614SDennis Dalessandro * a completion for the loopback packet since 530f48ad614SDennis Dalessandro * it would be out of order. 531f48ad614SDennis Dalessandro * Instead of waiting, we could queue a 532f48ad614SDennis Dalessandro * zero length descriptor so we get a callback. 533f48ad614SDennis Dalessandro */ 534f48ad614SDennis Dalessandro if (iowait_sdma_pending(&priv->s_iowait)) { 535f48ad614SDennis Dalessandro qp->s_flags |= RVT_S_WAIT_DMA; 536f48ad614SDennis Dalessandro goto bail; 537f48ad614SDennis Dalessandro } 538f48ad614SDennis Dalessandro qp->s_cur = next_cur; 539f48ad614SDennis Dalessandro spin_unlock_irqrestore(&qp->s_lock, tflags); 540f48ad614SDennis Dalessandro ud_loopback(qp, wqe); 541f48ad614SDennis Dalessandro spin_lock_irqsave(&qp->s_lock, tflags); 542f48ad614SDennis Dalessandro ps->flags = tflags; 543116aa033SVenkata Sandeep Dhanalakota rvt_send_complete(qp, wqe, IB_WC_SUCCESS); 544f48ad614SDennis Dalessandro goto done_free_tx; 545f48ad614SDennis Dalessandro } 546f48ad614SDennis Dalessandro } 547f48ad614SDennis Dalessandro 548f48ad614SDennis Dalessandro qp->s_cur = next_cur; 549e922ae06SDon Hiatt ps->s_txreq->s_cur_size = wqe->length; 550b777f154SMitko Haralanov ps->s_txreq->ss = &qp->s_sge; 551d8966fcdSDasaratharaman Chandramouli qp->s_srate = rdma_ah_get_static_rate(ah_attr); 552f48ad614SDennis Dalessandro qp->srate_mbps = ib_rate_to_mbps(qp->s_srate); 553f48ad614SDennis Dalessandro qp->s_wqe = wqe; 554f48ad614SDennis Dalessandro qp->s_sge.sge = wqe->sg_list[0]; 555f48ad614SDennis Dalessandro qp->s_sge.sg_list = wqe->sg_list + 1; 556f48ad614SDennis Dalessandro qp->s_sge.num_sge = wqe->wr.num_sge; 557f48ad614SDennis Dalessandro qp->s_sge.total_len = wqe->length; 558f48ad614SDennis Dalessandro 55988733e3bSDon Hiatt /* Make the appropriate header */ 56088733e3bSDon Hiatt hfi1_make_ud_req_tbl[priv->hdr_type](qp, ps, qp->s_wqe); 561f48ad614SDennis Dalessandro priv->s_sde = qp_to_sdma_engine(qp, priv->s_sc); 562f48ad614SDennis Dalessandro ps->s_txreq->sde = priv->s_sde; 563f48ad614SDennis Dalessandro priv->s_sendcontext = qp_to_send_context(qp, priv->s_sc); 564f48ad614SDennis Dalessandro ps->s_txreq->psc = priv->s_sendcontext; 565f48ad614SDennis Dalessandro /* disarm any ahg */ 566a9b6b3bcSDasaratharaman Chandramouli priv->s_ahg->ahgcount = 0; 567a9b6b3bcSDasaratharaman Chandramouli priv->s_ahg->ahgidx = 0; 568a9b6b3bcSDasaratharaman Chandramouli priv->s_ahg->tx_flags = 0; 569f48ad614SDennis Dalessandro 570f48ad614SDennis Dalessandro return 1; 571f48ad614SDennis Dalessandro 572f48ad614SDennis Dalessandro done_free_tx: 573f48ad614SDennis Dalessandro hfi1_put_txreq(ps->s_txreq); 574f48ad614SDennis Dalessandro ps->s_txreq = NULL; 575f48ad614SDennis Dalessandro return 1; 576f48ad614SDennis Dalessandro 577f48ad614SDennis Dalessandro bail: 578f48ad614SDennis Dalessandro hfi1_put_txreq(ps->s_txreq); 579f48ad614SDennis Dalessandro 580f48ad614SDennis Dalessandro bail_no_tx: 581f48ad614SDennis Dalessandro ps->s_txreq = NULL; 582f48ad614SDennis Dalessandro qp->s_flags &= ~RVT_S_BUSY; 583f48ad614SDennis Dalessandro return 0; 584f48ad614SDennis Dalessandro } 585f48ad614SDennis Dalessandro 586f48ad614SDennis Dalessandro /* 587f48ad614SDennis Dalessandro * Hardware can't check this so we do it here. 588f48ad614SDennis Dalessandro * 589f48ad614SDennis Dalessandro * This is a slightly different algorithm than the standard pkey check. It 590f48ad614SDennis Dalessandro * special cases the management keys and allows for 0x7fff and 0xffff to be in 591f48ad614SDennis Dalessandro * the table at the same time. 592f48ad614SDennis Dalessandro * 593f48ad614SDennis Dalessandro * @returns the index found or -1 if not found 594f48ad614SDennis Dalessandro */ 595f48ad614SDennis Dalessandro int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey) 596f48ad614SDennis Dalessandro { 597f48ad614SDennis Dalessandro struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 598f48ad614SDennis Dalessandro unsigned i; 599f48ad614SDennis Dalessandro 600f48ad614SDennis Dalessandro if (pkey == FULL_MGMT_P_KEY || pkey == LIM_MGMT_P_KEY) { 601f48ad614SDennis Dalessandro unsigned lim_idx = -1; 602f48ad614SDennis Dalessandro 603f48ad614SDennis Dalessandro for (i = 0; i < ARRAY_SIZE(ppd->pkeys); ++i) { 604f48ad614SDennis Dalessandro /* here we look for an exact match */ 605f48ad614SDennis Dalessandro if (ppd->pkeys[i] == pkey) 606f48ad614SDennis Dalessandro return i; 607f48ad614SDennis Dalessandro if (ppd->pkeys[i] == LIM_MGMT_P_KEY) 608f48ad614SDennis Dalessandro lim_idx = i; 609f48ad614SDennis Dalessandro } 610f48ad614SDennis Dalessandro 611f48ad614SDennis Dalessandro /* did not find 0xffff return 0x7fff idx if found */ 612f48ad614SDennis Dalessandro if (pkey == FULL_MGMT_P_KEY) 613f48ad614SDennis Dalessandro return lim_idx; 614f48ad614SDennis Dalessandro 615f48ad614SDennis Dalessandro /* no match... */ 616f48ad614SDennis Dalessandro return -1; 617f48ad614SDennis Dalessandro } 618f48ad614SDennis Dalessandro 619f48ad614SDennis Dalessandro pkey &= 0x7fff; /* remove limited/full membership bit */ 620f48ad614SDennis Dalessandro 621f48ad614SDennis Dalessandro for (i = 0; i < ARRAY_SIZE(ppd->pkeys); ++i) 622f48ad614SDennis Dalessandro if ((ppd->pkeys[i] & 0x7fff) == pkey) 623f48ad614SDennis Dalessandro return i; 624f48ad614SDennis Dalessandro 625f48ad614SDennis Dalessandro /* 626f48ad614SDennis Dalessandro * Should not get here, this means hardware failed to validate pkeys. 627f48ad614SDennis Dalessandro */ 628f48ad614SDennis Dalessandro return -1; 629f48ad614SDennis Dalessandro } 630f48ad614SDennis Dalessandro 63188733e3bSDon Hiatt void return_cnp_16B(struct hfi1_ibport *ibp, struct rvt_qp *qp, 632f59fb9e0SMike Marciniszyn u32 remote_qpn, u16 pkey, u32 slid, u32 dlid, 63388733e3bSDon Hiatt u8 sc5, const struct ib_grh *old_grh) 63488733e3bSDon Hiatt { 63588733e3bSDon Hiatt u64 pbc, pbc_flags = 0; 63688733e3bSDon Hiatt u32 bth0, plen, vl, hwords = 7; 63788733e3bSDon Hiatt u16 len; 63888733e3bSDon Hiatt u8 l4; 639fe4dd423SMitko Haralanov struct hfi1_opa_header hdr; 64088733e3bSDon Hiatt struct ib_other_headers *ohdr; 64188733e3bSDon Hiatt struct pio_buf *pbuf; 64288733e3bSDon Hiatt struct send_context *ctxt = qp_to_send_context(qp, sc5); 64388733e3bSDon Hiatt struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 64488733e3bSDon Hiatt u32 nwords; 64588733e3bSDon Hiatt 646fe4dd423SMitko Haralanov hdr.hdr_type = HFI1_PKT_TYPE_16B; 64788733e3bSDon Hiatt /* Populate length */ 64888733e3bSDon Hiatt nwords = ((hfi1_get_16b_padding(hwords << 2, 0) + 64988733e3bSDon Hiatt SIZE_OF_LT) >> 2) + SIZE_OF_CRC; 65088733e3bSDon Hiatt if (old_grh) { 651fe4dd423SMitko Haralanov struct ib_grh *grh = &hdr.opah.u.l.grh; 65288733e3bSDon Hiatt 65388733e3bSDon Hiatt grh->version_tclass_flow = old_grh->version_tclass_flow; 65478d3633bSMike Marciniszyn grh->paylen = cpu_to_be16( 65578d3633bSMike Marciniszyn (hwords - LRH_16B_DWORDS + nwords) << 2); 65688733e3bSDon Hiatt grh->hop_limit = 0xff; 65788733e3bSDon Hiatt grh->sgid = old_grh->dgid; 65888733e3bSDon Hiatt grh->dgid = old_grh->sgid; 659fe4dd423SMitko Haralanov ohdr = &hdr.opah.u.l.oth; 66088733e3bSDon Hiatt l4 = OPA_16B_L4_IB_GLOBAL; 66188733e3bSDon Hiatt hwords += sizeof(struct ib_grh) / sizeof(u32); 66288733e3bSDon Hiatt } else { 663fe4dd423SMitko Haralanov ohdr = &hdr.opah.u.oth; 66488733e3bSDon Hiatt l4 = OPA_16B_L4_IB_LOCAL; 66588733e3bSDon Hiatt } 66688733e3bSDon Hiatt 66788733e3bSDon Hiatt /* BIT 16 to 19 is TVER. Bit 20 to 22 is pad cnt */ 66888733e3bSDon Hiatt bth0 = (IB_OPCODE_CNP << 24) | (1 << 16) | 66988733e3bSDon Hiatt (hfi1_get_16b_padding(hwords << 2, 0) << 20); 67088733e3bSDon Hiatt ohdr->bth[0] = cpu_to_be32(bth0); 67188733e3bSDon Hiatt 67288733e3bSDon Hiatt ohdr->bth[1] = cpu_to_be32(remote_qpn); 67388733e3bSDon Hiatt ohdr->bth[2] = 0; /* PSN 0 */ 67488733e3bSDon Hiatt 67588733e3bSDon Hiatt /* Convert dwords to flits */ 67688733e3bSDon Hiatt len = (hwords + nwords) >> 1; 677fe4dd423SMitko Haralanov hfi1_make_16b_hdr(&hdr.opah, slid, dlid, len, pkey, 1, 0, l4, sc5); 67888733e3bSDon Hiatt 67988733e3bSDon Hiatt plen = 2 /* PBC */ + hwords + nwords; 68088733e3bSDon Hiatt pbc_flags |= PBC_PACKET_BYPASS | PBC_INSERT_BYPASS_ICRC; 68188733e3bSDon Hiatt vl = sc_to_vlt(ppd->dd, sc5); 68288733e3bSDon Hiatt pbc = create_pbc(ppd, pbc_flags, qp->srate_mbps, vl, plen); 68388733e3bSDon Hiatt if (ctxt) { 68488733e3bSDon Hiatt pbuf = sc_buffer_alloc(ctxt, plen, NULL, NULL); 685942a8993SMike Marciniszyn if (!IS_ERR_OR_NULL(pbuf)) { 686fe4dd423SMitko Haralanov trace_pio_output_ibhdr(ppd->dd, &hdr, sc5); 68788733e3bSDon Hiatt ppd->dd->pio_inline_send(ppd->dd, pbuf, pbc, 68888733e3bSDon Hiatt &hdr, hwords); 68988733e3bSDon Hiatt } 69088733e3bSDon Hiatt } 691fe4dd423SMitko Haralanov } 69288733e3bSDon Hiatt 693f48ad614SDennis Dalessandro void return_cnp(struct hfi1_ibport *ibp, struct rvt_qp *qp, u32 remote_qpn, 694f59fb9e0SMike Marciniszyn u16 pkey, u32 slid, u32 dlid, u8 sc5, 695f48ad614SDennis Dalessandro const struct ib_grh *old_grh) 696f48ad614SDennis Dalessandro { 697f48ad614SDennis Dalessandro u64 pbc, pbc_flags = 0; 698f48ad614SDennis Dalessandro u32 bth0, plen, vl, hwords = 5; 699f48ad614SDennis Dalessandro u16 lrh0; 700f48ad614SDennis Dalessandro u8 sl = ibp->sc_to_sl[sc5]; 701fe4dd423SMitko Haralanov struct hfi1_opa_header hdr; 702261a4351SMike Marciniszyn struct ib_other_headers *ohdr; 703f48ad614SDennis Dalessandro struct pio_buf *pbuf; 704f48ad614SDennis Dalessandro struct send_context *ctxt = qp_to_send_context(qp, sc5); 705f48ad614SDennis Dalessandro struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 706f48ad614SDennis Dalessandro 707fe4dd423SMitko Haralanov hdr.hdr_type = HFI1_PKT_TYPE_9B; 708f48ad614SDennis Dalessandro if (old_grh) { 709fe4dd423SMitko Haralanov struct ib_grh *grh = &hdr.ibh.u.l.grh; 710f48ad614SDennis Dalessandro 711f48ad614SDennis Dalessandro grh->version_tclass_flow = old_grh->version_tclass_flow; 71278d3633bSMike Marciniszyn grh->paylen = cpu_to_be16( 71378d3633bSMike Marciniszyn (hwords - LRH_9B_DWORDS + SIZE_OF_CRC) << 2); 714f48ad614SDennis Dalessandro grh->hop_limit = 0xff; 715f48ad614SDennis Dalessandro grh->sgid = old_grh->dgid; 716f48ad614SDennis Dalessandro grh->dgid = old_grh->sgid; 717fe4dd423SMitko Haralanov ohdr = &hdr.ibh.u.l.oth; 718f48ad614SDennis Dalessandro lrh0 = HFI1_LRH_GRH; 719f48ad614SDennis Dalessandro hwords += sizeof(struct ib_grh) / sizeof(u32); 720f48ad614SDennis Dalessandro } else { 721fe4dd423SMitko Haralanov ohdr = &hdr.ibh.u.oth; 722f48ad614SDennis Dalessandro lrh0 = HFI1_LRH_BTH; 723f48ad614SDennis Dalessandro } 724f48ad614SDennis Dalessandro 725f48ad614SDennis Dalessandro lrh0 |= (sc5 & 0xf) << 12 | sl << 4; 726f48ad614SDennis Dalessandro 727f48ad614SDennis Dalessandro bth0 = pkey | (IB_OPCODE_CNP << 24); 728f48ad614SDennis Dalessandro ohdr->bth[0] = cpu_to_be32(bth0); 729f48ad614SDennis Dalessandro 7303d591099SDon Hiatt ohdr->bth[1] = cpu_to_be32(remote_qpn | (1 << IB_BECN_SHIFT)); 731f48ad614SDennis Dalessandro ohdr->bth[2] = 0; /* PSN 0 */ 732f48ad614SDennis Dalessandro 733fe4dd423SMitko Haralanov hfi1_make_ib_hdr(&hdr.ibh, lrh0, hwords + SIZE_OF_CRC, dlid, slid); 734f48ad614SDennis Dalessandro plen = 2 /* PBC */ + hwords; 7357dafbab3SDon Hiatt pbc_flags |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT); 736f48ad614SDennis Dalessandro vl = sc_to_vlt(ppd->dd, sc5); 737f48ad614SDennis Dalessandro pbc = create_pbc(ppd, pbc_flags, qp->srate_mbps, vl, plen); 738f48ad614SDennis Dalessandro if (ctxt) { 739f48ad614SDennis Dalessandro pbuf = sc_buffer_alloc(ctxt, plen, NULL, NULL); 740942a8993SMike Marciniszyn if (!IS_ERR_OR_NULL(pbuf)) { 741fe4dd423SMitko Haralanov trace_pio_output_ibhdr(ppd->dd, &hdr, sc5); 742f48ad614SDennis Dalessandro ppd->dd->pio_inline_send(ppd->dd, pbuf, pbc, 743f48ad614SDennis Dalessandro &hdr, hwords); 744f48ad614SDennis Dalessandro } 745f48ad614SDennis Dalessandro } 746fe4dd423SMitko Haralanov } 747f48ad614SDennis Dalessandro 748f48ad614SDennis Dalessandro /* 749f48ad614SDennis Dalessandro * opa_smp_check() - Do the regular pkey checking, and the additional 750f3809209SJianxin Xiong * checks for SMPs specified in OPAv1 rev 1.0, 9/19/2016 update, section 751f3809209SJianxin Xiong * 9.10.25 ("SMA Packet Checks"). 752f48ad614SDennis Dalessandro * 753f48ad614SDennis Dalessandro * Note that: 754f48ad614SDennis Dalessandro * - Checks are done using the pkey directly from the packet's BTH, 755f48ad614SDennis Dalessandro * and specifically _not_ the pkey that we attach to the completion, 756f48ad614SDennis Dalessandro * which may be different. 757f48ad614SDennis Dalessandro * - These checks are specifically for "non-local" SMPs (i.e., SMPs 758f48ad614SDennis Dalessandro * which originated on another node). SMPs which are sent from, and 759f48ad614SDennis Dalessandro * destined to this node are checked in opa_local_smp_check(). 760f48ad614SDennis Dalessandro * 761f48ad614SDennis Dalessandro * At the point where opa_smp_check() is called, we know: 762f48ad614SDennis Dalessandro * - destination QP is QP0 763f48ad614SDennis Dalessandro * 764f48ad614SDennis Dalessandro * opa_smp_check() returns 0 if all checks succeed, 1 otherwise. 765f48ad614SDennis Dalessandro */ 766f48ad614SDennis Dalessandro static int opa_smp_check(struct hfi1_ibport *ibp, u16 pkey, u8 sc5, 767f48ad614SDennis Dalessandro struct rvt_qp *qp, u16 slid, struct opa_smp *smp) 768f48ad614SDennis Dalessandro { 769f48ad614SDennis Dalessandro struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 770f48ad614SDennis Dalessandro 771f48ad614SDennis Dalessandro /* 772f48ad614SDennis Dalessandro * I don't think it's possible for us to get here with sc != 0xf, 773f48ad614SDennis Dalessandro * but check it to be certain. 774f48ad614SDennis Dalessandro */ 775f48ad614SDennis Dalessandro if (sc5 != 0xf) 776f48ad614SDennis Dalessandro return 1; 777f48ad614SDennis Dalessandro 778f48ad614SDennis Dalessandro if (rcv_pkey_check(ppd, pkey, sc5, slid)) 779f48ad614SDennis Dalessandro return 1; 780f48ad614SDennis Dalessandro 781f48ad614SDennis Dalessandro /* 782f48ad614SDennis Dalessandro * At this point we know (and so don't need to check again) that 783f48ad614SDennis Dalessandro * the pkey is either LIM_MGMT_P_KEY, or FULL_MGMT_P_KEY 784f48ad614SDennis Dalessandro * (see ingress_pkey_check). 785f48ad614SDennis Dalessandro */ 786f48ad614SDennis Dalessandro if (smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE && 787f48ad614SDennis Dalessandro smp->mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED) { 788f48ad614SDennis Dalessandro ingress_pkey_table_fail(ppd, pkey, slid); 789f48ad614SDennis Dalessandro return 1; 790f48ad614SDennis Dalessandro } 791f48ad614SDennis Dalessandro 792f48ad614SDennis Dalessandro /* 793f48ad614SDennis Dalessandro * SMPs fall into one of four (disjoint) categories: 794f3809209SJianxin Xiong * SMA request, SMA response, SMA trap, or SMA trap repress. 795f3809209SJianxin Xiong * Our response depends, in part, on which type of SMP we're 796f3809209SJianxin Xiong * processing. 797f48ad614SDennis Dalessandro * 798f3809209SJianxin Xiong * If this is an SMA response, skip the check here. 799f3809209SJianxin Xiong * 800f3809209SJianxin Xiong * If this is an SMA request or SMA trap repress: 801f3809209SJianxin Xiong * - pkey != FULL_MGMT_P_KEY => 802f48ad614SDennis Dalessandro * increment port recv constraint errors, drop MAD 803f3809209SJianxin Xiong * 804f3809209SJianxin Xiong * Otherwise: 805f3809209SJianxin Xiong * - accept if the port is running an SM 806f3809209SJianxin Xiong * - drop MAD if it's an SMA trap 807f3809209SJianxin Xiong * - pkey == FULL_MGMT_P_KEY => 808f3809209SJianxin Xiong * reply with unsupported method 809f48ad614SDennis Dalessandro * - pkey != FULL_MGMT_P_KEY => 810f48ad614SDennis Dalessandro * increment port recv constraint errors, drop MAD 811f48ad614SDennis Dalessandro */ 812f48ad614SDennis Dalessandro switch (smp->method) { 813f3809209SJianxin Xiong case IB_MGMT_METHOD_GET_RESP: 814f3809209SJianxin Xiong case IB_MGMT_METHOD_REPORT_RESP: 815f3809209SJianxin Xiong break; 816f48ad614SDennis Dalessandro case IB_MGMT_METHOD_GET: 817f48ad614SDennis Dalessandro case IB_MGMT_METHOD_SET: 818f48ad614SDennis Dalessandro case IB_MGMT_METHOD_REPORT: 819f48ad614SDennis Dalessandro case IB_MGMT_METHOD_TRAP_REPRESS: 820f48ad614SDennis Dalessandro if (pkey != FULL_MGMT_P_KEY) { 821f48ad614SDennis Dalessandro ingress_pkey_table_fail(ppd, pkey, slid); 822f48ad614SDennis Dalessandro return 1; 823f48ad614SDennis Dalessandro } 824f48ad614SDennis Dalessandro break; 825f3809209SJianxin Xiong default: 826f48ad614SDennis Dalessandro if (ibp->rvp.port_cap_flags & IB_PORT_SM) 827f48ad614SDennis Dalessandro return 0; 828f3809209SJianxin Xiong if (smp->method == IB_MGMT_METHOD_TRAP) 829f3809209SJianxin Xiong return 1; 830f48ad614SDennis Dalessandro if (pkey == FULL_MGMT_P_KEY) { 831f48ad614SDennis Dalessandro smp->status |= IB_SMP_UNSUP_METHOD; 832f48ad614SDennis Dalessandro return 0; 833f48ad614SDennis Dalessandro } 834f48ad614SDennis Dalessandro ingress_pkey_table_fail(ppd, pkey, slid); 835f48ad614SDennis Dalessandro return 1; 836f48ad614SDennis Dalessandro } 837f48ad614SDennis Dalessandro return 0; 838f48ad614SDennis Dalessandro } 839f48ad614SDennis Dalessandro 840f48ad614SDennis Dalessandro /** 841f48ad614SDennis Dalessandro * hfi1_ud_rcv - receive an incoming UD packet 842f48ad614SDennis Dalessandro * @ibp: the port the packet came in on 843f48ad614SDennis Dalessandro * @hdr: the packet header 844f48ad614SDennis Dalessandro * @rcv_flags: flags relevant to rcv processing 845f48ad614SDennis Dalessandro * @data: the packet data 846f48ad614SDennis Dalessandro * @tlen: the packet length 847f48ad614SDennis Dalessandro * @qp: the QP the packet came on 848f48ad614SDennis Dalessandro * 849f48ad614SDennis Dalessandro * This is called from qp_rcv() to process an incoming UD packet 850f48ad614SDennis Dalessandro * for the given QP. 851f48ad614SDennis Dalessandro * Called at interrupt level. 852f48ad614SDennis Dalessandro */ 853f48ad614SDennis Dalessandro void hfi1_ud_rcv(struct hfi1_packet *packet) 854f48ad614SDennis Dalessandro { 855f48ad614SDennis Dalessandro u32 hdrsize = packet->hlen; 856f48ad614SDennis Dalessandro struct ib_wc wc; 857f48ad614SDennis Dalessandro u32 src_qp; 8589039746cSDon Hiatt u16 pkey; 859f48ad614SDennis Dalessandro int mgmt_pkey_idx = -1; 860f3e862cbSSebastian Sanchez struct hfi1_ibport *ibp = rcd_to_iport(packet->rcd); 86189c057caSDasaratharaman Chandramouli struct hfi1_pportdata *ppd = ppd_from_ibp(ibp); 86272c07e2bSDon Hiatt void *data = packet->payload; 863f48ad614SDennis Dalessandro u32 tlen = packet->tlen; 864f48ad614SDennis Dalessandro struct rvt_qp *qp = packet->qp; 86588733e3bSDon Hiatt u8 sc5 = packet->sc; 8669039746cSDon Hiatt u8 sl_from_sc; 8679039746cSDon Hiatt u8 opcode = packet->opcode; 8689039746cSDon Hiatt u8 sl = packet->sl; 8699039746cSDon Hiatt u32 dlid = packet->dlid; 8709039746cSDon Hiatt u32 slid = packet->slid; 87188733e3bSDon Hiatt u8 extra_bytes; 87281cd3891SDon Hiatt u8 l4 = 0; 87388733e3bSDon Hiatt bool dlid_is_permissive; 87488733e3bSDon Hiatt bool slid_is_permissive; 87581cd3891SDon Hiatt bool solicited = false; 876f48ad614SDennis Dalessandro 87788733e3bSDon Hiatt extra_bytes = packet->pad + packet->extra_byte + (SIZE_OF_CRC << 2); 87888733e3bSDon Hiatt 87988733e3bSDon Hiatt if (packet->etype == RHF_RCV_TYPE_BYPASS) { 88088733e3bSDon Hiatt u32 permissive_lid = 88188733e3bSDon Hiatt opa_get_lid(be32_to_cpu(OPA_LID_PERMISSIVE), 16B); 88288733e3bSDon Hiatt 88381cd3891SDon Hiatt l4 = hfi1_16B_get_l4(packet->hdr); 88488733e3bSDon Hiatt pkey = hfi1_16B_get_pkey(packet->hdr); 88588733e3bSDon Hiatt dlid_is_permissive = (dlid == permissive_lid); 88688733e3bSDon Hiatt slid_is_permissive = (slid == permissive_lid); 88788733e3bSDon Hiatt } else { 88881cd3891SDon Hiatt pkey = ib_bth_get_pkey(packet->ohdr); 88988733e3bSDon Hiatt dlid_is_permissive = (dlid == be16_to_cpu(IB_LID_PERMISSIVE)); 89088733e3bSDon Hiatt slid_is_permissive = (slid == be16_to_cpu(IB_LID_PERMISSIVE)); 89188733e3bSDon Hiatt } 89289c057caSDasaratharaman Chandramouli sl_from_sc = ibp->sc_to_sl[sc5]; 893f48ad614SDennis Dalessandro 89481cd3891SDon Hiatt if (likely(l4 != OPA_16B_L4_FM)) { 89581cd3891SDon Hiatt src_qp = ib_get_sqpn(packet->ohdr); 89681cd3891SDon Hiatt solicited = ib_bth_is_solicited(packet->ohdr); 89781cd3891SDon Hiatt } else { 89881cd3891SDon Hiatt src_qp = hfi1_16B_get_src_qpn(packet->mgmt); 89981cd3891SDon Hiatt } 90081cd3891SDon Hiatt 901fe4dd423SMitko Haralanov process_ecn(qp, packet); 902f48ad614SDennis Dalessandro /* 903f48ad614SDennis Dalessandro * Get the number of bytes the message was padded by 904f48ad614SDennis Dalessandro * and drop incomplete packets. 905f48ad614SDennis Dalessandro */ 90689c057caSDasaratharaman Chandramouli if (unlikely(tlen < (hdrsize + extra_bytes))) 907f48ad614SDennis Dalessandro goto drop; 908f48ad614SDennis Dalessandro 90989c057caSDasaratharaman Chandramouli tlen -= hdrsize + extra_bytes; 910f48ad614SDennis Dalessandro 911f48ad614SDennis Dalessandro /* 912f48ad614SDennis Dalessandro * Check that the permissive LID is only used on QP0 913f48ad614SDennis Dalessandro * and the QKEY matches (see 9.6.1.4.1 and 9.6.1.5.1). 914f48ad614SDennis Dalessandro */ 915f48ad614SDennis Dalessandro if (qp->ibqp.qp_num) { 91688733e3bSDon Hiatt if (unlikely(dlid_is_permissive || slid_is_permissive)) 917f48ad614SDennis Dalessandro goto drop; 918f48ad614SDennis Dalessandro if (qp->ibqp.qp_num > 1) { 919f48ad614SDennis Dalessandro if (unlikely(rcv_pkey_check(ppd, pkey, sc5, slid))) { 920f48ad614SDennis Dalessandro /* 921f48ad614SDennis Dalessandro * Traps will not be sent for packets dropped 922f48ad614SDennis Dalessandro * by the HW. This is fine, as sending trap 923f48ad614SDennis Dalessandro * for invalid pkeys is optional according to 924f48ad614SDennis Dalessandro * IB spec (release 1.3, section 10.9.4) 925f48ad614SDennis Dalessandro */ 92613d84914SDennis Dalessandro hfi1_bad_pkey(ibp, 92789c057caSDasaratharaman Chandramouli pkey, sl, 928f48ad614SDennis Dalessandro src_qp, qp->ibqp.qp_num, 92989c057caSDasaratharaman Chandramouli slid, dlid); 930f48ad614SDennis Dalessandro return; 931f48ad614SDennis Dalessandro } 932f48ad614SDennis Dalessandro } else { 933f48ad614SDennis Dalessandro /* GSI packet */ 934f48ad614SDennis Dalessandro mgmt_pkey_idx = hfi1_lookup_pkey_idx(ibp, pkey); 935f48ad614SDennis Dalessandro if (mgmt_pkey_idx < 0) 936f48ad614SDennis Dalessandro goto drop; 937f48ad614SDennis Dalessandro } 93881cd3891SDon Hiatt if (unlikely(l4 != OPA_16B_L4_FM && 93981cd3891SDon Hiatt ib_get_qkey(packet->ohdr) != qp->qkey)) 94081cd3891SDon Hiatt return; /* Silent drop */ 94113d84914SDennis Dalessandro 942f48ad614SDennis Dalessandro /* Drop invalid MAD packets (see 13.5.3.1). */ 943f48ad614SDennis Dalessandro if (unlikely(qp->ibqp.qp_num == 1 && 94489c057caSDasaratharaman Chandramouli (tlen > 2048 || (sc5 == 0xF)))) 945f48ad614SDennis Dalessandro goto drop; 946f48ad614SDennis Dalessandro } else { 947f48ad614SDennis Dalessandro /* Received on QP0, and so by definition, this is an SMP */ 948f48ad614SDennis Dalessandro struct opa_smp *smp = (struct opa_smp *)data; 949f48ad614SDennis Dalessandro 950f48ad614SDennis Dalessandro if (opa_smp_check(ibp, pkey, sc5, qp, slid, smp)) 951f48ad614SDennis Dalessandro goto drop; 952f48ad614SDennis Dalessandro 953f48ad614SDennis Dalessandro if (tlen > 2048) 954f48ad614SDennis Dalessandro goto drop; 95588733e3bSDon Hiatt if ((dlid_is_permissive || slid_is_permissive) && 956f48ad614SDennis Dalessandro smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) 957f48ad614SDennis Dalessandro goto drop; 958f48ad614SDennis Dalessandro 959f48ad614SDennis Dalessandro /* look up SMI pkey */ 960f48ad614SDennis Dalessandro mgmt_pkey_idx = hfi1_lookup_pkey_idx(ibp, pkey); 961f48ad614SDennis Dalessandro if (mgmt_pkey_idx < 0) 962f48ad614SDennis Dalessandro goto drop; 963f48ad614SDennis Dalessandro } 964f48ad614SDennis Dalessandro 965f48ad614SDennis Dalessandro if (qp->ibqp.qp_num > 1 && 966f48ad614SDennis Dalessandro opcode == IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE) { 96781cd3891SDon Hiatt wc.ex.imm_data = packet->ohdr->u.ud.imm_data; 968f48ad614SDennis Dalessandro wc.wc_flags = IB_WC_WITH_IMM; 969f48ad614SDennis Dalessandro } else if (opcode == IB_OPCODE_UD_SEND_ONLY) { 970f48ad614SDennis Dalessandro wc.ex.imm_data = 0; 971f48ad614SDennis Dalessandro wc.wc_flags = 0; 972f48ad614SDennis Dalessandro } else { 973f48ad614SDennis Dalessandro goto drop; 974f48ad614SDennis Dalessandro } 975f48ad614SDennis Dalessandro 976f48ad614SDennis Dalessandro /* 977f48ad614SDennis Dalessandro * A GRH is expected to precede the data even if not 978f48ad614SDennis Dalessandro * present on the wire. 979f48ad614SDennis Dalessandro */ 980f48ad614SDennis Dalessandro wc.byte_len = tlen + sizeof(struct ib_grh); 981f48ad614SDennis Dalessandro 982f48ad614SDennis Dalessandro /* 983f48ad614SDennis Dalessandro * Get the next work request entry to find where to put the data. 984f48ad614SDennis Dalessandro */ 985f48ad614SDennis Dalessandro if (qp->r_flags & RVT_R_REUSE_SGE) { 986f48ad614SDennis Dalessandro qp->r_flags &= ~RVT_R_REUSE_SGE; 987f48ad614SDennis Dalessandro } else { 988f48ad614SDennis Dalessandro int ret; 989f48ad614SDennis Dalessandro 990832369faSBrian Welty ret = rvt_get_rwqe(qp, false); 991f48ad614SDennis Dalessandro if (ret < 0) { 992beb5a042SBrian Welty rvt_rc_error(qp, IB_WC_LOC_QP_OP_ERR); 993f48ad614SDennis Dalessandro return; 994f48ad614SDennis Dalessandro } 995f48ad614SDennis Dalessandro if (!ret) { 996f48ad614SDennis Dalessandro if (qp->ibqp.qp_num == 0) 997f48ad614SDennis Dalessandro ibp->rvp.n_vl15_dropped++; 998f48ad614SDennis Dalessandro return; 999f48ad614SDennis Dalessandro } 1000f48ad614SDennis Dalessandro } 1001f48ad614SDennis Dalessandro /* Silently drop packets which are too big. */ 1002f48ad614SDennis Dalessandro if (unlikely(wc.byte_len > qp->r_len)) { 1003f48ad614SDennis Dalessandro qp->r_flags |= RVT_R_REUSE_SGE; 1004f48ad614SDennis Dalessandro goto drop; 1005f48ad614SDennis Dalessandro } 10069039746cSDon Hiatt if (packet->grh) { 1007019f118bSBrian Welty rvt_copy_sge(qp, &qp->r_sge, packet->grh, 100888733e3bSDon Hiatt sizeof(struct ib_grh), true, false); 100988733e3bSDon Hiatt wc.wc_flags |= IB_WC_GRH; 101088733e3bSDon Hiatt } else if (packet->etype == RHF_RCV_TYPE_BYPASS) { 101188733e3bSDon Hiatt struct ib_grh grh; 101288733e3bSDon Hiatt /* 101388733e3bSDon Hiatt * Assuming we only created 16B on the send side 101488733e3bSDon Hiatt * if we want to use large LIDs, since GRH was stripped 101588733e3bSDon Hiatt * out when creating 16B, add back the GRH here. 101688733e3bSDon Hiatt */ 101788733e3bSDon Hiatt hfi1_make_ext_grh(packet, &grh, slid, dlid); 1018019f118bSBrian Welty rvt_copy_sge(qp, &qp->r_sge, &grh, 10190128fceaSBrian Welty sizeof(struct ib_grh), true, false); 1020f48ad614SDennis Dalessandro wc.wc_flags |= IB_WC_GRH; 1021f48ad614SDennis Dalessandro } else { 10221198fceaSBrian Welty rvt_skip_sge(&qp->r_sge, sizeof(struct ib_grh), true); 1023f48ad614SDennis Dalessandro } 1024019f118bSBrian Welty rvt_copy_sge(qp, &qp->r_sge, data, wc.byte_len - sizeof(struct ib_grh), 10250128fceaSBrian Welty true, false); 1026f48ad614SDennis Dalessandro rvt_put_ss(&qp->r_sge); 1027f48ad614SDennis Dalessandro if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags)) 1028f48ad614SDennis Dalessandro return; 1029f48ad614SDennis Dalessandro wc.wr_id = qp->r_wr_id; 1030f48ad614SDennis Dalessandro wc.status = IB_WC_SUCCESS; 1031f48ad614SDennis Dalessandro wc.opcode = IB_WC_RECV; 1032f48ad614SDennis Dalessandro wc.vendor_err = 0; 1033f48ad614SDennis Dalessandro wc.qp = &qp->ibqp; 1034f48ad614SDennis Dalessandro wc.src_qp = src_qp; 1035f48ad614SDennis Dalessandro 1036f48ad614SDennis Dalessandro if (qp->ibqp.qp_type == IB_QPT_GSI || 1037f48ad614SDennis Dalessandro qp->ibqp.qp_type == IB_QPT_SMI) { 1038f48ad614SDennis Dalessandro if (mgmt_pkey_idx < 0) { 1039f48ad614SDennis Dalessandro if (net_ratelimit()) { 1040f48ad614SDennis Dalessandro struct hfi1_devdata *dd = ppd->dd; 1041f48ad614SDennis Dalessandro 1042f48ad614SDennis Dalessandro dd_dev_err(dd, "QP type %d mgmt_pkey_idx < 0 and packet not dropped???\n", 1043f48ad614SDennis Dalessandro qp->ibqp.qp_type); 1044f48ad614SDennis Dalessandro mgmt_pkey_idx = 0; 1045f48ad614SDennis Dalessandro } 1046f48ad614SDennis Dalessandro } 1047f48ad614SDennis Dalessandro wc.pkey_index = (unsigned)mgmt_pkey_idx; 1048f48ad614SDennis Dalessandro } else { 1049f48ad614SDennis Dalessandro wc.pkey_index = 0; 1050f48ad614SDennis Dalessandro } 105188733e3bSDon Hiatt if (slid_is_permissive) 105288733e3bSDon Hiatt slid = be32_to_cpu(OPA_LID_PERMISSIVE); 1053b64581adSDon Hiatt wc.slid = slid & U16_MAX; 105489c057caSDasaratharaman Chandramouli wc.sl = sl_from_sc; 1055f48ad614SDennis Dalessandro 1056f48ad614SDennis Dalessandro /* 1057f48ad614SDennis Dalessandro * Save the LMC lower bits if the destination LID is a unicast LID. 1058f48ad614SDennis Dalessandro */ 105988733e3bSDon Hiatt wc.dlid_path_bits = hfi1_check_mcast(dlid) ? 0 : 1060f48ad614SDennis Dalessandro dlid & ((1 << ppd_from_ibp(ibp)->lmc) - 1); 1061f48ad614SDennis Dalessandro wc.port_num = qp->port_num; 1062f48ad614SDennis Dalessandro /* Signal completion event if the solicited bit is set. */ 1063*5136bfeaSKamenee Arumugam rvt_recv_cq(qp, &wc, solicited); 1064f48ad614SDennis Dalessandro return; 1065f48ad614SDennis Dalessandro 1066f48ad614SDennis Dalessandro drop: 1067f48ad614SDennis Dalessandro ibp->rvp.n_pkt_drops++; 1068f48ad614SDennis Dalessandro } 1069