/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2009-2013 Chelsio, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include __FBSDID("$FreeBSD$"); #include "opt_inet.h" #ifdef TCP_OFFLOAD #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct sge_iq; struct rss_header; struct cpl_set_tcb_rpl; #include #include "offload.h" #include "tom/t4_tom.h" #include "iw_cxgbe.h" #include "user.h" static int creds(struct toepcb *toep, struct inpcb *inp, size_t wrsize); static int max_fr_immd = T4_MAX_FR_IMMD;//SYSCTL parameter later... static int alloc_ird(struct c4iw_dev *dev, u32 ird) { int ret = 0; spin_lock_irq(&dev->lock); if (ird <= dev->avail_ird) dev->avail_ird -= ird; else ret = -ENOMEM; spin_unlock_irq(&dev->lock); if (ret) log(LOG_WARNING, "%s: device IRD resources exhausted\n", device_get_nameunit(dev->rdev.adap->dev)); return ret; } static void free_ird(struct c4iw_dev *dev, int ird) { spin_lock_irq(&dev->lock); dev->avail_ird += ird; spin_unlock_irq(&dev->lock); } static void set_state(struct c4iw_qp *qhp, enum c4iw_qp_state state) { unsigned long flag; spin_lock_irqsave(&qhp->lock, flag); qhp->attr.state = state; spin_unlock_irqrestore(&qhp->lock, flag); } static int destroy_qp(struct c4iw_rdev *rdev, struct t4_wq *wq, struct c4iw_dev_ucontext *uctx) { struct c4iw_dev *rhp = rdev_to_c4iw_dev(rdev); /* * uP clears EQ contexts when the connection exits rdma mode, * so no need to post a RESET WR for these EQs. */ dma_free_coherent(rhp->ibdev.dma_device, wq->rq.memsize, wq->rq.queue, dma_unmap_addr(&wq->rq, mapping)); dma_free_coherent(rhp->ibdev.dma_device, wq->sq.memsize, wq->sq.queue, dma_unmap_addr(&wq->sq, mapping)); c4iw_rqtpool_free(rdev, wq->rq.rqt_hwaddr, wq->rq.rqt_size); kfree(wq->rq.sw_rq); kfree(wq->sq.sw_sq); c4iw_put_qpid(rdev, wq->rq.qid, uctx); c4iw_put_qpid(rdev, wq->sq.qid, uctx); return 0; } static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq, struct t4_cq *rcq, struct t4_cq *scq, struct c4iw_dev_ucontext *uctx) { struct adapter *sc = rdev->adap; struct c4iw_dev *rhp = rdev_to_c4iw_dev(rdev); int user = (uctx != &rdev->uctx); struct fw_ri_res_wr *res_wr; struct fw_ri_res *res; int wr_len; struct c4iw_wr_wait wr_wait; int ret = 0; int eqsize; struct wrqe *wr; u64 sq_bar2_qoffset = 0, rq_bar2_qoffset = 0; wq->sq.qid = c4iw_get_qpid(rdev, uctx); if (!wq->sq.qid) return -ENOMEM; wq->rq.qid = c4iw_get_qpid(rdev, uctx); if (!wq->rq.qid) { ret = -ENOMEM; goto free_sq_qid; } if (!user) { wq->sq.sw_sq = kzalloc(wq->sq.size * sizeof *wq->sq.sw_sq, GFP_KERNEL); if (!wq->sq.sw_sq) { ret = -ENOMEM; goto free_rq_qid; } wq->rq.sw_rq = kzalloc(wq->rq.size * sizeof *wq->rq.sw_rq, GFP_KERNEL); if (!wq->rq.sw_rq) { ret = -ENOMEM; goto free_sw_sq; } } /* * RQT must be a power of 2 and at least 16 deep. */ wq->rq.rqt_size = roundup_pow_of_two(max_t(u16, wq->rq.size, 16)); wq->rq.rqt_hwaddr = c4iw_rqtpool_alloc(rdev, wq->rq.rqt_size); if (!wq->rq.rqt_hwaddr) { ret = -ENOMEM; goto free_sw_rq; } /*QP memory, allocate DMAable memory for Send & Receive Queues */ wq->sq.queue = dma_alloc_coherent(rhp->ibdev.dma_device, wq->sq.memsize, &(wq->sq.dma_addr), GFP_KERNEL); if (!wq->sq.queue) { ret = -ENOMEM; goto free_hwaddr; } wq->sq.phys_addr = vtophys(wq->sq.queue); dma_unmap_addr_set(&wq->sq, mapping, wq->sq.dma_addr); memset(wq->sq.queue, 0, wq->sq.memsize); wq->rq.queue = dma_alloc_coherent(rhp->ibdev.dma_device, wq->rq.memsize, &(wq->rq.dma_addr), GFP_KERNEL); if (!wq->rq.queue) { ret = -ENOMEM; goto free_sq_dma; } wq->rq.phys_addr = vtophys(wq->rq.queue); dma_unmap_addr_set(&wq->rq, mapping, wq->rq.dma_addr); memset(wq->rq.queue, 0, wq->rq.memsize); CTR5(KTR_IW_CXGBE, "%s QP sq base va 0x%p pa 0x%llx rq base va 0x%p pa 0x%llx", __func__, wq->sq.queue, (unsigned long long)wq->sq.phys_addr, wq->rq.queue, (unsigned long long)wq->rq.phys_addr); /* Doorbell/WC regions, determine the BAR2 queue offset and qid. */ t4_bar2_sge_qregs(rdev->adap, wq->sq.qid, T4_BAR2_QTYPE_EGRESS, user, &sq_bar2_qoffset, &wq->sq.bar2_qid); t4_bar2_sge_qregs(rdev->adap, wq->rq.qid, T4_BAR2_QTYPE_EGRESS, user, &rq_bar2_qoffset, &wq->rq.bar2_qid); if (user) { /* Compute BAR2 DB/WC physical address(page-aligned) for * Userspace mapping. */ wq->sq.bar2_pa = (rdev->bar2_pa + sq_bar2_qoffset) & PAGE_MASK; wq->rq.bar2_pa = (rdev->bar2_pa + rq_bar2_qoffset) & PAGE_MASK; CTR3(KTR_IW_CXGBE, "%s BAR2 DB/WC sq base pa 0x%llx rq base pa 0x%llx", __func__, (unsigned long long)wq->sq.bar2_pa, (unsigned long long)wq->rq.bar2_pa); } else { /* Compute BAR2 DB/WC virtual address to access in kernel. */ wq->sq.bar2_va = (void __iomem *)((u64)rdev->bar2_kva + sq_bar2_qoffset); wq->rq.bar2_va = (void __iomem *)((u64)rdev->bar2_kva + rq_bar2_qoffset); CTR3(KTR_IW_CXGBE, "%s BAR2 DB/WC sq base va %p rq base va %p", __func__, (unsigned long long)wq->sq.bar2_va, (unsigned long long)wq->rq.bar2_va); } wq->rdev = rdev; wq->rq.msn = 1; /* build fw_ri_res_wr */ wr_len = sizeof *res_wr + 2 * sizeof *res; wr = alloc_wrqe(wr_len, &sc->sge.ctrlq[0]); if (wr == NULL) { ret = -ENOMEM; goto free_rq_dma; } res_wr = wrtod(wr); memset(res_wr, 0, wr_len); res_wr->op_nres = cpu_to_be32( V_FW_WR_OP(FW_RI_RES_WR) | V_FW_RI_RES_WR_NRES(2) | F_FW_WR_COMPL); res_wr->len16_pkd = cpu_to_be32(DIV_ROUND_UP(wr_len, 16)); res_wr->cookie = (unsigned long) &wr_wait; res = res_wr->res; res->u.sqrq.restype = FW_RI_RES_TYPE_SQ; res->u.sqrq.op = FW_RI_RES_OP_WRITE; /* eqsize is the number of 64B entries plus the status page size. */ eqsize = wq->sq.size * T4_SQ_NUM_SLOTS + rdev->hw_queue.t4_eq_status_entries; res->u.sqrq.fetchszm_to_iqid = cpu_to_be32( V_FW_RI_RES_WR_HOSTFCMODE(0) | /* no host cidx updates */ V_FW_RI_RES_WR_CPRIO(0) | /* don't keep in chip cache */ V_FW_RI_RES_WR_PCIECHN(0) | /* set by uP at ri_init time */ V_FW_RI_RES_WR_IQID(scq->cqid)); res->u.sqrq.dcaen_to_eqsize = cpu_to_be32( V_FW_RI_RES_WR_DCAEN(0) | V_FW_RI_RES_WR_DCACPU(0) | V_FW_RI_RES_WR_FBMIN(chip_id(sc) <= CHELSIO_T5 ? X_FETCHBURSTMIN_64B : X_FETCHBURSTMIN_64B_T6) | V_FW_RI_RES_WR_FBMAX(3) | V_FW_RI_RES_WR_CIDXFTHRESHO(0) | V_FW_RI_RES_WR_CIDXFTHRESH(0) | V_FW_RI_RES_WR_EQSIZE(eqsize)); res->u.sqrq.eqid = cpu_to_be32(wq->sq.qid); res->u.sqrq.eqaddr = cpu_to_be64(wq->sq.dma_addr); res++; res->u.sqrq.restype = FW_RI_RES_TYPE_RQ; res->u.sqrq.op = FW_RI_RES_OP_WRITE; /* eqsize is the number of 64B entries plus the status page size. */ eqsize = wq->rq.size * T4_RQ_NUM_SLOTS + rdev->hw_queue.t4_eq_status_entries; res->u.sqrq.fetchszm_to_iqid = cpu_to_be32( V_FW_RI_RES_WR_HOSTFCMODE(0) | /* no host cidx updates */ V_FW_RI_RES_WR_CPRIO(0) | /* don't keep in chip cache */ V_FW_RI_RES_WR_PCIECHN(0) | /* set by uP at ri_init time */ V_FW_RI_RES_WR_IQID(rcq->cqid)); res->u.sqrq.dcaen_to_eqsize = cpu_to_be32( V_FW_RI_RES_WR_DCAEN(0) | V_FW_RI_RES_WR_DCACPU(0) | V_FW_RI_RES_WR_FBMIN(chip_id(sc) <= CHELSIO_T5 ? X_FETCHBURSTMIN_64B : X_FETCHBURSTMIN_64B_T6) | V_FW_RI_RES_WR_FBMAX(3) | V_FW_RI_RES_WR_CIDXFTHRESHO(0) | V_FW_RI_RES_WR_CIDXFTHRESH(0) | V_FW_RI_RES_WR_EQSIZE(eqsize)); res->u.sqrq.eqid = cpu_to_be32(wq->rq.qid); res->u.sqrq.eqaddr = cpu_to_be64(wq->rq.dma_addr); c4iw_init_wr_wait(&wr_wait); t4_wrq_tx(sc, wr); ret = c4iw_wait_for_reply(rdev, &wr_wait, 0, wq->sq.qid, NULL, __func__); if (ret) goto free_rq_dma; CTR5(KTR_IW_CXGBE, "%s sqid 0x%x rqid 0x%x kdb 0x%p squdb 0x%llx rqudb 0x%llx", __func__, wq->sq.qid, wq->rq.qid, (unsigned long long)wq->sq.bar2_va, (unsigned long long)wq->rq.bar2_va); return 0; free_rq_dma: dma_free_coherent(rhp->ibdev.dma_device, wq->rq.memsize, wq->rq.queue, dma_unmap_addr(&wq->rq, mapping)); free_sq_dma: dma_free_coherent(rhp->ibdev.dma_device, wq->sq.memsize, wq->sq.queue, dma_unmap_addr(&wq->sq, mapping)); free_hwaddr: c4iw_rqtpool_free(rdev, wq->rq.rqt_hwaddr, wq->rq.rqt_size); free_sw_rq: kfree(wq->rq.sw_rq); free_sw_sq: kfree(wq->sq.sw_sq); free_rq_qid: c4iw_put_qpid(rdev, wq->rq.qid, uctx); free_sq_qid: c4iw_put_qpid(rdev, wq->sq.qid, uctx); return ret; } static int build_immd(struct t4_sq *sq, struct fw_ri_immd *immdp, const struct ib_send_wr *wr, int max, u32 *plenp) { u8 *dstp, *srcp; u32 plen = 0; int i; int rem, len; dstp = (u8 *)immdp->data; for (i = 0; i < wr->num_sge; i++) { if ((plen + wr->sg_list[i].length) > max) return -EMSGSIZE; srcp = (u8 *)(unsigned long)wr->sg_list[i].addr; plen += wr->sg_list[i].length; rem = wr->sg_list[i].length; while (rem) { if (dstp == (u8 *)&sq->queue[sq->size]) dstp = (u8 *)sq->queue; if (rem <= (u8 *)&sq->queue[sq->size] - dstp) len = rem; else len = (u8 *)&sq->queue[sq->size] - dstp; memcpy(dstp, srcp, len); dstp += len; srcp += len; rem -= len; } } len = roundup(plen + sizeof *immdp, 16) - (plen + sizeof *immdp); if (len) memset(dstp, 0, len); immdp->op = FW_RI_DATA_IMMD; immdp->r1 = 0; immdp->r2 = 0; immdp->immdlen = cpu_to_be32(plen); *plenp = plen; return 0; } static int build_isgl(__be64 *queue_start, __be64 *queue_end, struct fw_ri_isgl *isglp, struct ib_sge *sg_list, int num_sge, u32 *plenp) { int i; u32 plen = 0; __be64 *flitp = (__be64 *)isglp->sge; for (i = 0; i < num_sge; i++) { if ((plen + sg_list[i].length) < plen) return -EMSGSIZE; plen += sg_list[i].length; *flitp = cpu_to_be64(((u64)sg_list[i].lkey << 32) | sg_list[i].length); if (++flitp == queue_end) flitp = queue_start; *flitp = cpu_to_be64(sg_list[i].addr); if (++flitp == queue_end) flitp = queue_start; } *flitp = (__force __be64)0; isglp->op = FW_RI_DATA_ISGL; isglp->r1 = 0; isglp->nsge = cpu_to_be16(num_sge); isglp->r2 = 0; if (plenp) *plenp = plen; return 0; } static int build_rdma_send(struct t4_sq *sq, union t4_wr *wqe, const struct ib_send_wr *wr, u8 *len16) { u32 plen; int size; int ret; if (wr->num_sge > T4_MAX_SEND_SGE) return -EINVAL; switch (wr->opcode) { case IB_WR_SEND: if (wr->send_flags & IB_SEND_SOLICITED) wqe->send.sendop_pkd = cpu_to_be32( V_FW_RI_SEND_WR_SENDOP(FW_RI_SEND_WITH_SE)); else wqe->send.sendop_pkd = cpu_to_be32( V_FW_RI_SEND_WR_SENDOP(FW_RI_SEND)); wqe->send.stag_inv = 0; break; case IB_WR_SEND_WITH_INV: if (wr->send_flags & IB_SEND_SOLICITED) wqe->send.sendop_pkd = cpu_to_be32( V_FW_RI_SEND_WR_SENDOP(FW_RI_SEND_WITH_SE_INV)); else wqe->send.sendop_pkd = cpu_to_be32( V_FW_RI_SEND_WR_SENDOP(FW_RI_SEND_WITH_INV)); wqe->send.stag_inv = cpu_to_be32(wr->ex.invalidate_rkey); break; default: return -EINVAL; } wqe->send.r3 = 0; wqe->send.r4 = 0; plen = 0; if (wr->num_sge) { if (wr->send_flags & IB_SEND_INLINE) { ret = build_immd(sq, wqe->send.u.immd_src, wr, T4_MAX_SEND_INLINE, &plen); if (ret) return ret; size = sizeof wqe->send + sizeof(struct fw_ri_immd) + plen; } else { ret = build_isgl((__be64 *)sq->queue, (__be64 *)&sq->queue[sq->size], wqe->send.u.isgl_src, wr->sg_list, wr->num_sge, &plen); if (ret) return ret; size = sizeof wqe->send + sizeof(struct fw_ri_isgl) + wr->num_sge * sizeof(struct fw_ri_sge); } } else { wqe->send.u.immd_src[0].op = FW_RI_DATA_IMMD; wqe->send.u.immd_src[0].r1 = 0; wqe->send.u.immd_src[0].r2 = 0; wqe->send.u.immd_src[0].immdlen = 0; size = sizeof wqe->send + sizeof(struct fw_ri_immd); plen = 0; } *len16 = DIV_ROUND_UP(size, 16); wqe->send.plen = cpu_to_be32(plen); return 0; } static int build_rdma_write(struct t4_sq *sq, union t4_wr *wqe, const struct ib_send_wr *wr, u8 *len16) { u32 plen; int size; int ret; if (wr->num_sge > T4_MAX_SEND_SGE) return -EINVAL; wqe->write.immd_data = 0; wqe->write.stag_sink = cpu_to_be32(rdma_wr(wr)->rkey); wqe->write.to_sink = cpu_to_be64(rdma_wr(wr)->remote_addr); if (wr->num_sge) { if (wr->send_flags & IB_SEND_INLINE) { ret = build_immd(sq, wqe->write.u.immd_src, wr, T4_MAX_WRITE_INLINE, &plen); if (ret) return ret; size = sizeof wqe->write + sizeof(struct fw_ri_immd) + plen; } else { ret = build_isgl((__be64 *)sq->queue, (__be64 *)&sq->queue[sq->size], wqe->write.u.isgl_src, wr->sg_list, wr->num_sge, &plen); if (ret) return ret; size = sizeof wqe->write + sizeof(struct fw_ri_isgl) + wr->num_sge * sizeof(struct fw_ri_sge); } } else { wqe->write.u.immd_src[0].op = FW_RI_DATA_IMMD; wqe->write.u.immd_src[0].r1 = 0; wqe->write.u.immd_src[0].r2 = 0; wqe->write.u.immd_src[0].immdlen = 0; size = sizeof wqe->write + sizeof(struct fw_ri_immd); plen = 0; } *len16 = DIV_ROUND_UP(size, 16); wqe->write.plen = cpu_to_be32(plen); return 0; } static int build_rdma_read(union t4_wr *wqe, const struct ib_send_wr *wr, u8 *len16) { if (wr->num_sge > 1) return -EINVAL; if (wr->num_sge && wr->sg_list[0].length) { wqe->read.stag_src = cpu_to_be32(rdma_wr(wr)->rkey); wqe->read.to_src_hi = cpu_to_be32((u32)(rdma_wr(wr)->remote_addr >> 32)); wqe->read.to_src_lo = cpu_to_be32((u32)rdma_wr(wr)->remote_addr); wqe->read.stag_sink = cpu_to_be32(wr->sg_list[0].lkey); wqe->read.plen = cpu_to_be32(wr->sg_list[0].length); wqe->read.to_sink_hi = cpu_to_be32((u32)(wr->sg_list[0].addr >> 32)); wqe->read.to_sink_lo = cpu_to_be32((u32)(wr->sg_list[0].addr)); } else { wqe->read.stag_src = cpu_to_be32(2); wqe->read.to_src_hi = 0; wqe->read.to_src_lo = 0; wqe->read.stag_sink = cpu_to_be32(2); wqe->read.plen = 0; wqe->read.to_sink_hi = 0; wqe->read.to_sink_lo = 0; } wqe->read.r2 = 0; wqe->read.r5 = 0; *len16 = DIV_ROUND_UP(sizeof wqe->read, 16); return 0; } static int build_rdma_recv(struct c4iw_qp *qhp, union t4_recv_wr *wqe, const struct ib_recv_wr *wr, u8 *len16) { int ret; ret = build_isgl((__be64 *)qhp->wq.rq.queue, (__be64 *)&qhp->wq.rq.queue[qhp->wq.rq.size], &wqe->recv.isgl, wr->sg_list, wr->num_sge, NULL); if (ret) return ret; *len16 = DIV_ROUND_UP(sizeof wqe->recv + wr->num_sge * sizeof(struct fw_ri_sge), 16); return 0; } static int build_inv_stag(union t4_wr *wqe, const struct ib_send_wr *wr, u8 *len16) { wqe->inv.stag_inv = cpu_to_be32(wr->ex.invalidate_rkey); wqe->inv.r2 = 0; *len16 = DIV_ROUND_UP(sizeof wqe->inv, 16); return 0; } static void free_qp_work(struct work_struct *work) { struct c4iw_ucontext *ucontext; struct c4iw_qp *qhp; struct c4iw_dev *rhp; qhp = container_of(work, struct c4iw_qp, free_work); ucontext = qhp->ucontext; rhp = qhp->rhp; CTR3(KTR_IW_CXGBE, "%s qhp %p ucontext %p", __func__, qhp, ucontext); destroy_qp(&rhp->rdev, &qhp->wq, ucontext ? &ucontext->uctx : &rhp->rdev.uctx); kfree(qhp); } static void queue_qp_free(struct kref *kref) { struct c4iw_qp *qhp; qhp = container_of(kref, struct c4iw_qp, kref); CTR2(KTR_IW_CXGBE, "%s qhp %p", __func__, qhp); queue_work(qhp->rhp->rdev.free_workq, &qhp->free_work); } void c4iw_qp_add_ref(struct ib_qp *qp) { CTR2(KTR_IW_CXGBE, "%s ib_qp %p", __func__, qp); kref_get(&to_c4iw_qp(qp)->kref); } void c4iw_qp_rem_ref(struct ib_qp *qp) { CTR2(KTR_IW_CXGBE, "%s ib_qp %p", __func__, qp); kref_put(&to_c4iw_qp(qp)->kref, queue_qp_free); } static void complete_sq_drain_wr(struct c4iw_qp *qhp, const struct ib_send_wr *wr) { struct t4_cqe cqe = {}; struct c4iw_cq *schp; unsigned long flag; struct t4_cq *cq; schp = to_c4iw_cq(qhp->ibqp.send_cq); cq = &schp->cq; PDBG("%s drain sq id %u\n", __func__, qhp->wq.sq.qid); cqe.u.drain_cookie = wr->wr_id; cqe.header = cpu_to_be32(V_CQE_STATUS(T4_ERR_SWFLUSH) | V_CQE_OPCODE(C4IW_DRAIN_OPCODE) | V_CQE_TYPE(1) | V_CQE_SWCQE(1) | V_CQE_QPID(qhp->wq.sq.qid)); spin_lock_irqsave(&schp->lock, flag); cqe.bits_type_ts = cpu_to_be64(V_CQE_GENBIT((u64)cq->gen)); cq->sw_queue[cq->sw_pidx] = cqe; t4_swcq_produce(cq); spin_unlock_irqrestore(&schp->lock, flag); spin_lock_irqsave(&schp->comp_handler_lock, flag); (*schp->ibcq.comp_handler)(&schp->ibcq, schp->ibcq.cq_context); spin_unlock_irqrestore(&schp->comp_handler_lock, flag); } static void complete_rq_drain_wr(struct c4iw_qp *qhp, const struct ib_recv_wr *wr) { struct t4_cqe cqe = {}; struct c4iw_cq *rchp; unsigned long flag; struct t4_cq *cq; rchp = to_c4iw_cq(qhp->ibqp.recv_cq); cq = &rchp->cq; PDBG("%s drain rq id %u\n", __func__, qhp->wq.sq.qid); cqe.u.drain_cookie = wr->wr_id; cqe.header = cpu_to_be32(V_CQE_STATUS(T4_ERR_SWFLUSH) | V_CQE_OPCODE(C4IW_DRAIN_OPCODE) | V_CQE_TYPE(0) | V_CQE_SWCQE(1) | V_CQE_QPID(qhp->wq.sq.qid)); spin_lock_irqsave(&rchp->lock, flag); cqe.bits_type_ts = cpu_to_be64(V_CQE_GENBIT((u64)cq->gen)); cq->sw_queue[cq->sw_pidx] = cqe; t4_swcq_produce(cq); spin_unlock_irqrestore(&rchp->lock, flag); spin_lock_irqsave(&rchp->comp_handler_lock, flag); (*rchp->ibcq.comp_handler)(&rchp->ibcq, rchp->ibcq.cq_context); spin_unlock_irqrestore(&rchp->comp_handler_lock, flag); } static int build_tpte_memreg(struct fw_ri_fr_nsmr_tpte_wr *fr, const struct ib_reg_wr *wr, struct c4iw_mr *mhp, u8 *len16) { __be64 *p = (__be64 *)fr->pbl; if (wr->mr->page_size > C4IW_MAX_PAGE_SIZE) return -EINVAL; fr->r2 = cpu_to_be32(0); fr->stag = cpu_to_be32(mhp->ibmr.rkey); fr->tpte.valid_to_pdid = cpu_to_be32(F_FW_RI_TPTE_VALID | V_FW_RI_TPTE_STAGKEY((mhp->ibmr.rkey & M_FW_RI_TPTE_STAGKEY)) | V_FW_RI_TPTE_STAGSTATE(1) | V_FW_RI_TPTE_STAGTYPE(FW_RI_STAG_NSMR) | V_FW_RI_TPTE_PDID(mhp->attr.pdid)); fr->tpte.locread_to_qpid = cpu_to_be32( V_FW_RI_TPTE_PERM(c4iw_ib_to_tpt_access(wr->access)) | V_FW_RI_TPTE_ADDRTYPE(FW_RI_VA_BASED_TO) | V_FW_RI_TPTE_PS(ilog2(wr->mr->page_size) - 12)); fr->tpte.nosnoop_pbladdr = cpu_to_be32(V_FW_RI_TPTE_PBLADDR( PBL_OFF(&mhp->rhp->rdev, mhp->attr.pbl_addr)>>3)); fr->tpte.dca_mwbcnt_pstag = cpu_to_be32(0); fr->tpte.len_hi = cpu_to_be32(mhp->ibmr.length >> 32); fr->tpte.len_lo = cpu_to_be32(mhp->ibmr.length & 0xffffffff); fr->tpte.va_hi = cpu_to_be32(mhp->ibmr.iova >> 32); fr->tpte.va_lo_fbo = cpu_to_be32(mhp->ibmr.iova & 0xffffffff); p[0] = cpu_to_be64((u64)mhp->mpl[0]); p[1] = cpu_to_be64((u64)mhp->mpl[1]); *len16 = DIV_ROUND_UP(sizeof(*fr), 16); return 0; } static int build_memreg(struct t4_sq *sq, union t4_wr *wqe, const struct ib_reg_wr *wr, struct c4iw_mr *mhp, u8 *len16, bool dsgl_supported) { struct fw_ri_immd *imdp; __be64 *p; int i; int pbllen = roundup(mhp->mpl_len * sizeof(u64), 32); int rem; if (mhp->mpl_len > t4_max_fr_depth(&mhp->rhp->rdev, use_dsgl)) return -EINVAL; if (wr->mr->page_size > C4IW_MAX_PAGE_SIZE) return -EINVAL; wqe->fr.qpbinde_to_dcacpu = 0; wqe->fr.pgsz_shift = ilog2(wr->mr->page_size) - 12; wqe->fr.addr_type = FW_RI_VA_BASED_TO; wqe->fr.mem_perms = c4iw_ib_to_tpt_access(wr->access); wqe->fr.len_hi = cpu_to_be32(mhp->ibmr.length >> 32); wqe->fr.len_lo = cpu_to_be32(mhp->ibmr.length & 0xffffffff); wqe->fr.stag = cpu_to_be32(wr->key); wqe->fr.va_hi = cpu_to_be32(mhp->ibmr.iova >> 32); wqe->fr.va_lo_fbo = cpu_to_be32(mhp->ibmr.iova & 0xffffffff); if (dsgl_supported && use_dsgl && (pbllen > max_fr_immd)) { struct fw_ri_dsgl *sglp; for (i = 0; i < mhp->mpl_len; i++) mhp->mpl[i] = (__force u64)cpu_to_be64((u64)mhp->mpl[i]); sglp = (struct fw_ri_dsgl *)(&wqe->fr + 1); sglp->op = FW_RI_DATA_DSGL; sglp->r1 = 0; sglp->nsge = cpu_to_be16(1); sglp->addr0 = cpu_to_be64(mhp->mpl_addr); sglp->len0 = cpu_to_be32(pbllen); *len16 = DIV_ROUND_UP(sizeof(wqe->fr) + sizeof(*sglp), 16); } else { imdp = (struct fw_ri_immd *)(&wqe->fr + 1); imdp->op = FW_RI_DATA_IMMD; imdp->r1 = 0; imdp->r2 = 0; imdp->immdlen = cpu_to_be32(pbllen); p = (__be64 *)(imdp + 1); rem = pbllen; for (i = 0; i < mhp->mpl_len; i++) { *p = cpu_to_be64((u64)mhp->mpl[i]); rem -= sizeof(*p); if (++p == (__be64 *)&sq->queue[sq->size]) p = (__be64 *)sq->queue; } BUG_ON(rem < 0); while (rem) { *p = 0; rem -= sizeof(*p); if (++p == (__be64 *)&sq->queue[sq->size]) p = (__be64 *)sq->queue; } *len16 = DIV_ROUND_UP(sizeof(wqe->fr) + sizeof(*imdp) + pbllen, 16); } return 0; } int c4iw_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr, const struct ib_send_wr **bad_wr) { int err = 0; u8 len16 = 0; enum fw_wr_opcodes fw_opcode = 0; enum fw_ri_wr_flags fw_flags; struct c4iw_qp *qhp; union t4_wr *wqe = NULL; u32 num_wrs; struct t4_swsqe *swsqe; unsigned long flag; u16 idx = 0; struct c4iw_rdev *rdev; qhp = to_c4iw_qp(ibqp); rdev = &qhp->rhp->rdev; spin_lock_irqsave(&qhp->lock, flag); if (t4_wq_in_error(&qhp->wq)) { spin_unlock_irqrestore(&qhp->lock, flag); complete_sq_drain_wr(qhp, wr); return err; } num_wrs = t4_sq_avail(&qhp->wq); if (num_wrs == 0) { spin_unlock_irqrestore(&qhp->lock, flag); *bad_wr = wr; return -ENOMEM; } while (wr) { if (num_wrs == 0) { err = -ENOMEM; *bad_wr = wr; break; } wqe = (union t4_wr *)((u8 *)qhp->wq.sq.queue + qhp->wq.sq.wq_pidx * T4_EQ_ENTRY_SIZE); fw_flags = 0; if (wr->send_flags & IB_SEND_SOLICITED) fw_flags |= FW_RI_SOLICITED_EVENT_FLAG; if (wr->send_flags & IB_SEND_SIGNALED || qhp->sq_sig_all) fw_flags |= FW_RI_COMPLETION_FLAG; swsqe = &qhp->wq.sq.sw_sq[qhp->wq.sq.pidx]; switch (wr->opcode) { case IB_WR_SEND_WITH_INV: case IB_WR_SEND: if (wr->send_flags & IB_SEND_FENCE) fw_flags |= FW_RI_READ_FENCE_FLAG; fw_opcode = FW_RI_SEND_WR; if (wr->opcode == IB_WR_SEND) swsqe->opcode = FW_RI_SEND; else swsqe->opcode = FW_RI_SEND_WITH_INV; err = build_rdma_send(&qhp->wq.sq, wqe, wr, &len16); break; case IB_WR_RDMA_WRITE: fw_opcode = FW_RI_RDMA_WRITE_WR; swsqe->opcode = FW_RI_RDMA_WRITE; err = build_rdma_write(&qhp->wq.sq, wqe, wr, &len16); break; case IB_WR_RDMA_READ: case IB_WR_RDMA_READ_WITH_INV: fw_opcode = FW_RI_RDMA_READ_WR; swsqe->opcode = FW_RI_READ_REQ; if (wr->opcode == IB_WR_RDMA_READ_WITH_INV) { c4iw_invalidate_mr(qhp->rhp, wr->sg_list[0].lkey); fw_flags = FW_RI_RDMA_READ_INVALIDATE; } else { fw_flags = 0; } err = build_rdma_read(wqe, wr, &len16); if (err) break; swsqe->read_len = wr->sg_list[0].length; if (!qhp->wq.sq.oldest_read) qhp->wq.sq.oldest_read = swsqe; break; case IB_WR_REG_MR: { struct c4iw_mr *mhp = to_c4iw_mr(reg_wr(wr)->mr); swsqe->opcode = FW_RI_FAST_REGISTER; if (rdev->adap->params.fr_nsmr_tpte_wr_support && !mhp->attr.state && mhp->mpl_len <= 2) { fw_opcode = FW_RI_FR_NSMR_TPTE_WR; err = build_tpte_memreg(&wqe->fr_tpte, reg_wr(wr), mhp, &len16); } else { fw_opcode = FW_RI_FR_NSMR_WR; err = build_memreg(&qhp->wq.sq, wqe, reg_wr(wr), mhp, &len16, rdev->adap->params.ulptx_memwrite_dsgl); } if (err) break; mhp->attr.state = 1; break; } case IB_WR_LOCAL_INV: if (wr->send_flags & IB_SEND_FENCE) fw_flags |= FW_RI_LOCAL_FENCE_FLAG; fw_opcode = FW_RI_INV_LSTAG_WR; swsqe->opcode = FW_RI_LOCAL_INV; err = build_inv_stag(wqe, wr, &len16); c4iw_invalidate_mr(qhp->rhp, wr->ex.invalidate_rkey); break; default: CTR2(KTR_IW_CXGBE, "%s post of type =%d TBD!", __func__, wr->opcode); err = -EINVAL; } if (err) { *bad_wr = wr; break; } swsqe->idx = qhp->wq.sq.pidx; swsqe->complete = 0; swsqe->signaled = (wr->send_flags & IB_SEND_SIGNALED) || qhp->sq_sig_all; swsqe->flushed = 0; swsqe->wr_id = wr->wr_id; init_wr_hdr(wqe, qhp->wq.sq.pidx, fw_opcode, fw_flags, len16); CTR5(KTR_IW_CXGBE, "%s cookie 0x%llx pidx 0x%x opcode 0x%x read_len %u", __func__, (unsigned long long)wr->wr_id, qhp->wq.sq.pidx, swsqe->opcode, swsqe->read_len); wr = wr->next; num_wrs--; t4_sq_produce(&qhp->wq, len16); idx += DIV_ROUND_UP(len16*16, T4_EQ_ENTRY_SIZE); } t4_ring_sq_db(&qhp->wq, idx, wqe, rdev->adap->iwt.wc_en); spin_unlock_irqrestore(&qhp->lock, flag); return err; } int c4iw_post_receive(struct ib_qp *ibqp, const struct ib_recv_wr *wr, const struct ib_recv_wr **bad_wr) { int err = 0; struct c4iw_qp *qhp; union t4_recv_wr *wqe = NULL; u32 num_wrs; u8 len16 = 0; unsigned long flag; u16 idx = 0; qhp = to_c4iw_qp(ibqp); spin_lock_irqsave(&qhp->lock, flag); if (t4_wq_in_error(&qhp->wq)) { spin_unlock_irqrestore(&qhp->lock, flag); complete_rq_drain_wr(qhp, wr); return err; } num_wrs = t4_rq_avail(&qhp->wq); if (num_wrs == 0) { spin_unlock_irqrestore(&qhp->lock, flag); *bad_wr = wr; return -ENOMEM; } while (wr) { if (wr->num_sge > T4_MAX_RECV_SGE) { err = -EINVAL; *bad_wr = wr; break; } wqe = (union t4_recv_wr *)((u8 *)qhp->wq.rq.queue + qhp->wq.rq.wq_pidx * T4_EQ_ENTRY_SIZE); if (num_wrs) err = build_rdma_recv(qhp, wqe, wr, &len16); else err = -ENOMEM; if (err) { *bad_wr = wr; break; } qhp->wq.rq.sw_rq[qhp->wq.rq.pidx].wr_id = wr->wr_id; wqe->recv.opcode = FW_RI_RECV_WR; wqe->recv.r1 = 0; wqe->recv.wrid = qhp->wq.rq.pidx; wqe->recv.r2[0] = 0; wqe->recv.r2[1] = 0; wqe->recv.r2[2] = 0; wqe->recv.len16 = len16; CTR3(KTR_IW_CXGBE, "%s cookie 0x%llx pidx %u", __func__, (unsigned long long) wr->wr_id, qhp->wq.rq.pidx); t4_rq_produce(&qhp->wq, len16); idx += DIV_ROUND_UP(len16*16, T4_EQ_ENTRY_SIZE); wr = wr->next; num_wrs--; } t4_ring_rq_db(&qhp->wq, idx, wqe, qhp->rhp->rdev.adap->iwt.wc_en); spin_unlock_irqrestore(&qhp->lock, flag); return err; } static inline void build_term_codes(struct t4_cqe *err_cqe, u8 *layer_type, u8 *ecode) { int status; int tagged; int opcode; int rqtype; int send_inv; if (!err_cqe) { *layer_type = LAYER_RDMAP|DDP_LOCAL_CATA; *ecode = 0; return; } status = CQE_STATUS(err_cqe); opcode = CQE_OPCODE(err_cqe); rqtype = RQ_TYPE(err_cqe); send_inv = (opcode == FW_RI_SEND_WITH_INV) || (opcode == FW_RI_SEND_WITH_SE_INV); tagged = (opcode == FW_RI_RDMA_WRITE) || (rqtype && (opcode == FW_RI_READ_RESP)); switch (status) { case T4_ERR_STAG: if (send_inv) { *layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP; *ecode = RDMAP_CANT_INV_STAG; } else { *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; *ecode = RDMAP_INV_STAG; } break; case T4_ERR_PDID: *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; if ((opcode == FW_RI_SEND_WITH_INV) || (opcode == FW_RI_SEND_WITH_SE_INV)) *ecode = RDMAP_CANT_INV_STAG; else *ecode = RDMAP_STAG_NOT_ASSOC; break; case T4_ERR_QPID: *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; *ecode = RDMAP_STAG_NOT_ASSOC; break; case T4_ERR_ACCESS: *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; *ecode = RDMAP_ACC_VIOL; break; case T4_ERR_WRAP: *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; *ecode = RDMAP_TO_WRAP; break; case T4_ERR_BOUND: if (tagged) { *layer_type = LAYER_DDP|DDP_TAGGED_ERR; *ecode = DDPT_BASE_BOUNDS; } else { *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; *ecode = RDMAP_BASE_BOUNDS; } break; case T4_ERR_INVALIDATE_SHARED_MR: case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND: *layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP; *ecode = RDMAP_CANT_INV_STAG; break; case T4_ERR_ECC: case T4_ERR_ECC_PSTAG: case T4_ERR_INTERNAL_ERR: *layer_type = LAYER_RDMAP|RDMAP_LOCAL_CATA; *ecode = 0; break; case T4_ERR_OUT_OF_RQE: *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; *ecode = DDPU_INV_MSN_NOBUF; break; case T4_ERR_PBL_ADDR_BOUND: *layer_type = LAYER_DDP|DDP_TAGGED_ERR; *ecode = DDPT_BASE_BOUNDS; break; case T4_ERR_CRC: *layer_type = LAYER_MPA|DDP_LLP; *ecode = MPA_CRC_ERR; break; case T4_ERR_MARKER: *layer_type = LAYER_MPA|DDP_LLP; *ecode = MPA_MARKER_ERR; break; case T4_ERR_PDU_LEN_ERR: *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; *ecode = DDPU_MSG_TOOBIG; break; case T4_ERR_DDP_VERSION: if (tagged) { *layer_type = LAYER_DDP|DDP_TAGGED_ERR; *ecode = DDPT_INV_VERS; } else { *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; *ecode = DDPU_INV_VERS; } break; case T4_ERR_RDMA_VERSION: *layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP; *ecode = RDMAP_INV_VERS; break; case T4_ERR_OPCODE: *layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP; *ecode = RDMAP_INV_OPCODE; break; case T4_ERR_DDP_QUEUE_NUM: *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; *ecode = DDPU_INV_QN; break; case T4_ERR_MSN: case T4_ERR_MSN_GAP: case T4_ERR_MSN_RANGE: case T4_ERR_IRD_OVERFLOW: *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; *ecode = DDPU_INV_MSN_RANGE; break; case T4_ERR_TBIT: *layer_type = LAYER_DDP|DDP_LOCAL_CATA; *ecode = 0; break; case T4_ERR_MO: *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; *ecode = DDPU_INV_MO; break; default: *layer_type = LAYER_RDMAP|DDP_LOCAL_CATA; *ecode = 0; break; } } static void post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe, gfp_t gfp) { int ret; struct fw_ri_wr *wqe; struct terminate_message *term; struct wrqe *wr; struct socket *so = qhp->ep->com.so; struct inpcb *inp = sotoinpcb(so); struct tcpcb *tp = intotcpcb(inp); struct toepcb *toep = tp->t_toe; CTR4(KTR_IW_CXGBE, "%s qhp %p qid 0x%x tid %u", __func__, qhp, qhp->wq.sq.qid, qhp->ep->hwtid); wr = alloc_wrqe(sizeof(*wqe), &toep->ofld_txq->wrq); if (wr == NULL) return; wqe = wrtod(wr); memset(wqe, 0, sizeof *wqe); wqe->op_compl = cpu_to_be32(V_FW_WR_OP(FW_RI_WR)); wqe->flowid_len16 = cpu_to_be32( V_FW_WR_FLOWID(qhp->ep->hwtid) | V_FW_WR_LEN16(DIV_ROUND_UP(sizeof *wqe, 16))); wqe->u.terminate.type = FW_RI_TYPE_TERMINATE; wqe->u.terminate.immdlen = cpu_to_be32(sizeof *term); term = (struct terminate_message *)wqe->u.terminate.termmsg; if (qhp->attr.layer_etype == (LAYER_MPA|DDP_LLP)) { term->layer_etype = qhp->attr.layer_etype; term->ecode = qhp->attr.ecode; } else build_term_codes(err_cqe, &term->layer_etype, &term->ecode); ret = creds(toep, inp, sizeof(*wqe)); if (ret) { free_wrqe(wr); return; } t4_wrq_tx(qhp->rhp->rdev.adap, wr); } /* Assumes qhp lock is held. */ static void __flush_qp(struct c4iw_qp *qhp, struct c4iw_cq *rchp, struct c4iw_cq *schp) { int count; int rq_flushed, sq_flushed; unsigned long flag; CTR4(KTR_IW_CXGBE, "%s qhp %p rchp %p schp %p", __func__, qhp, rchp, schp); /* locking hierarchy: cq lock first, then qp lock. */ spin_lock_irqsave(&rchp->lock, flag); spin_lock(&qhp->lock); if (qhp->wq.flushed) { spin_unlock(&qhp->lock); spin_unlock_irqrestore(&rchp->lock, flag); return; } qhp->wq.flushed = 1; c4iw_flush_hw_cq(rchp); c4iw_count_rcqes(&rchp->cq, &qhp->wq, &count); rq_flushed = c4iw_flush_rq(&qhp->wq, &rchp->cq, count); spin_unlock(&qhp->lock); spin_unlock_irqrestore(&rchp->lock, flag); /* locking hierarchy: cq lock first, then qp lock. */ spin_lock_irqsave(&schp->lock, flag); spin_lock(&qhp->lock); if (schp != rchp) c4iw_flush_hw_cq(schp); sq_flushed = c4iw_flush_sq(qhp); spin_unlock(&qhp->lock); spin_unlock_irqrestore(&schp->lock, flag); if (schp == rchp) { if (t4_clear_cq_armed(&rchp->cq) && (rq_flushed || sq_flushed)) { spin_lock_irqsave(&rchp->comp_handler_lock, flag); (*rchp->ibcq.comp_handler)(&rchp->ibcq, rchp->ibcq.cq_context); spin_unlock_irqrestore(&rchp->comp_handler_lock, flag); } } else { if (t4_clear_cq_armed(&rchp->cq) && rq_flushed) { spin_lock_irqsave(&rchp->comp_handler_lock, flag); (*rchp->ibcq.comp_handler)(&rchp->ibcq, rchp->ibcq.cq_context); spin_unlock_irqrestore(&rchp->comp_handler_lock, flag); } if (t4_clear_cq_armed(&schp->cq) && sq_flushed) { spin_lock_irqsave(&schp->comp_handler_lock, flag); (*schp->ibcq.comp_handler)(&schp->ibcq, schp->ibcq.cq_context); spin_unlock_irqrestore(&schp->comp_handler_lock, flag); } } } static void flush_qp(struct c4iw_qp *qhp) { struct c4iw_cq *rchp, *schp; unsigned long flag; rchp = to_c4iw_cq(qhp->ibqp.recv_cq); schp = to_c4iw_cq(qhp->ibqp.send_cq); t4_set_wq_in_error(&qhp->wq); if (qhp->ibqp.uobject) { t4_set_cq_in_error(&rchp->cq); spin_lock_irqsave(&rchp->comp_handler_lock, flag); (*rchp->ibcq.comp_handler)(&rchp->ibcq, rchp->ibcq.cq_context); spin_unlock_irqrestore(&rchp->comp_handler_lock, flag); if (schp != rchp) { t4_set_cq_in_error(&schp->cq); spin_lock_irqsave(&schp->comp_handler_lock, flag); (*schp->ibcq.comp_handler)(&schp->ibcq, schp->ibcq.cq_context); spin_unlock_irqrestore(&schp->comp_handler_lock, flag); } return; } __flush_qp(qhp, rchp, schp); } static int rdma_fini(struct c4iw_dev *rhp, struct c4iw_qp *qhp, struct c4iw_ep *ep) { struct c4iw_rdev *rdev = &rhp->rdev; struct adapter *sc = rdev->adap; struct fw_ri_wr *wqe; int ret; struct wrqe *wr; struct socket *so = ep->com.so; struct inpcb *inp = sotoinpcb(so); struct tcpcb *tp = intotcpcb(inp); struct toepcb *toep = tp->t_toe; KASSERT(rhp == qhp->rhp && ep == qhp->ep, ("%s: EDOOFUS", __func__)); CTR5(KTR_IW_CXGBE, "%s qhp %p qid 0x%x ep %p tid %u", __func__, qhp, qhp->wq.sq.qid, ep, ep->hwtid); wr = alloc_wrqe(sizeof(*wqe), &toep->ofld_txq->wrq); if (wr == NULL) return (0); wqe = wrtod(wr); memset(wqe, 0, sizeof *wqe); wqe->op_compl = cpu_to_be32(V_FW_WR_OP(FW_RI_WR) | F_FW_WR_COMPL); wqe->flowid_len16 = cpu_to_be32(V_FW_WR_FLOWID(ep->hwtid) | V_FW_WR_LEN16(DIV_ROUND_UP(sizeof *wqe, 16))); wqe->cookie = (unsigned long) &ep->com.wr_wait; wqe->u.fini.type = FW_RI_TYPE_FINI; c4iw_init_wr_wait(&ep->com.wr_wait); ret = creds(toep, inp, sizeof(*wqe)); if (ret) { free_wrqe(wr); return ret; } t4_wrq_tx(sc, wr); ret = c4iw_wait_for_reply(rdev, &ep->com.wr_wait, ep->hwtid, qhp->wq.sq.qid, ep->com.so, __func__); return ret; } static void build_rtr_msg(u8 p2p_type, struct fw_ri_init *init) { CTR2(KTR_IW_CXGBE, "%s p2p_type = %d", __func__, p2p_type); memset(&init->u, 0, sizeof init->u); switch (p2p_type) { case FW_RI_INIT_P2PTYPE_RDMA_WRITE: init->u.write.opcode = FW_RI_RDMA_WRITE_WR; init->u.write.stag_sink = cpu_to_be32(1); init->u.write.to_sink = cpu_to_be64(1); init->u.write.u.immd_src[0].op = FW_RI_DATA_IMMD; init->u.write.len16 = DIV_ROUND_UP(sizeof init->u.write + sizeof(struct fw_ri_immd), 16); break; case FW_RI_INIT_P2PTYPE_READ_REQ: init->u.write.opcode = FW_RI_RDMA_READ_WR; init->u.read.stag_src = cpu_to_be32(1); init->u.read.to_src_lo = cpu_to_be32(1); init->u.read.stag_sink = cpu_to_be32(1); init->u.read.to_sink_lo = cpu_to_be32(1); init->u.read.len16 = DIV_ROUND_UP(sizeof init->u.read, 16); break; } } static int creds(struct toepcb *toep, struct inpcb *inp, size_t wrsize) { struct ofld_tx_sdesc *txsd; CTR3(KTR_IW_CXGBE, "%s:creB %p %u", __func__, toep , wrsize); INP_WLOCK(inp); if ((inp->inp_flags & (INP_DROPPED | INP_TIMEWAIT)) != 0) { INP_WUNLOCK(inp); return (EINVAL); } txsd = &toep->txsd[toep->txsd_pidx]; txsd->tx_credits = howmany(wrsize, 16); txsd->plen = 0; KASSERT(toep->tx_credits >= txsd->tx_credits && toep->txsd_avail > 0, ("%s: not enough credits (%d)", __func__, toep->tx_credits)); toep->tx_credits -= txsd->tx_credits; if (__predict_false(++toep->txsd_pidx == toep->txsd_total)) toep->txsd_pidx = 0; toep->txsd_avail--; INP_WUNLOCK(inp); CTR5(KTR_IW_CXGBE, "%s:creE %p %u %u %u", __func__, toep , txsd->tx_credits, toep->tx_credits, toep->txsd_pidx); return (0); } static int rdma_init(struct c4iw_dev *rhp, struct c4iw_qp *qhp) { struct fw_ri_wr *wqe; int ret; struct wrqe *wr; struct c4iw_ep *ep = qhp->ep; struct c4iw_rdev *rdev = &qhp->rhp->rdev; struct adapter *sc = rdev->adap; struct socket *so = ep->com.so; struct inpcb *inp = sotoinpcb(so); struct tcpcb *tp = intotcpcb(inp); struct toepcb *toep = tp->t_toe; CTR5(KTR_IW_CXGBE, "%s qhp %p qid 0x%x ep %p tid %u", __func__, qhp, qhp->wq.sq.qid, ep, ep->hwtid); wr = alloc_wrqe(sizeof(*wqe), &toep->ofld_txq->wrq); if (wr == NULL) return (0); wqe = wrtod(wr); ret = alloc_ird(rhp, qhp->attr.max_ird); if (ret) { qhp->attr.max_ird = 0; free_wrqe(wr); return ret; } memset(wqe, 0, sizeof *wqe); wqe->op_compl = cpu_to_be32( V_FW_WR_OP(FW_RI_WR) | F_FW_WR_COMPL); wqe->flowid_len16 = cpu_to_be32(V_FW_WR_FLOWID(ep->hwtid) | V_FW_WR_LEN16(DIV_ROUND_UP(sizeof *wqe, 16))); wqe->cookie = (unsigned long) &ep->com.wr_wait; wqe->u.init.type = FW_RI_TYPE_INIT; wqe->u.init.mpareqbit_p2ptype = V_FW_RI_WR_MPAREQBIT(qhp->attr.mpa_attr.initiator) | V_FW_RI_WR_P2PTYPE(qhp->attr.mpa_attr.p2p_type); wqe->u.init.mpa_attrs = FW_RI_MPA_IETF_ENABLE; if (qhp->attr.mpa_attr.recv_marker_enabled) wqe->u.init.mpa_attrs |= FW_RI_MPA_RX_MARKER_ENABLE; if (qhp->attr.mpa_attr.xmit_marker_enabled) wqe->u.init.mpa_attrs |= FW_RI_MPA_TX_MARKER_ENABLE; if (qhp->attr.mpa_attr.crc_enabled) wqe->u.init.mpa_attrs |= FW_RI_MPA_CRC_ENABLE; wqe->u.init.qp_caps = FW_RI_QP_RDMA_READ_ENABLE | FW_RI_QP_RDMA_WRITE_ENABLE | FW_RI_QP_BIND_ENABLE; if (!qhp->ibqp.uobject) wqe->u.init.qp_caps |= FW_RI_QP_FAST_REGISTER_ENABLE | FW_RI_QP_STAG0_ENABLE; wqe->u.init.nrqe = cpu_to_be16(t4_rqes_posted(&qhp->wq)); wqe->u.init.pdid = cpu_to_be32(qhp->attr.pd); wqe->u.init.qpid = cpu_to_be32(qhp->wq.sq.qid); wqe->u.init.sq_eqid = cpu_to_be32(qhp->wq.sq.qid); wqe->u.init.rq_eqid = cpu_to_be32(qhp->wq.rq.qid); wqe->u.init.scqid = cpu_to_be32(qhp->attr.scq); wqe->u.init.rcqid = cpu_to_be32(qhp->attr.rcq); wqe->u.init.ord_max = cpu_to_be32(qhp->attr.max_ord); wqe->u.init.ird_max = cpu_to_be32(qhp->attr.max_ird); wqe->u.init.iss = cpu_to_be32(ep->snd_seq); wqe->u.init.irs = cpu_to_be32(ep->rcv_seq); wqe->u.init.hwrqsize = cpu_to_be32(qhp->wq.rq.rqt_size); wqe->u.init.hwrqaddr = cpu_to_be32(qhp->wq.rq.rqt_hwaddr - sc->vres.rq.start); if (qhp->attr.mpa_attr.initiator) build_rtr_msg(qhp->attr.mpa_attr.p2p_type, &wqe->u.init); c4iw_init_wr_wait(&ep->com.wr_wait); ret = creds(toep, inp, sizeof(*wqe)); if (ret) { free_wrqe(wr); free_ird(rhp, qhp->attr.max_ird); return ret; } t4_wrq_tx(sc, wr); ret = c4iw_wait_for_reply(rdev, &ep->com.wr_wait, ep->hwtid, qhp->wq.sq.qid, ep->com.so, __func__); toep->params.ulp_mode = ULP_MODE_RDMA; free_ird(rhp, qhp->attr.max_ird); return ret; } int c4iw_modify_qp(struct c4iw_dev *rhp, struct c4iw_qp *qhp, enum c4iw_qp_attr_mask mask, struct c4iw_qp_attributes *attrs, int internal) { int ret = 0; struct c4iw_qp_attributes newattr = qhp->attr; int disconnect = 0; int terminate = 0; int abort = 0; int free = 0; struct c4iw_ep *ep = NULL; CTR5(KTR_IW_CXGBE, "%s qhp %p sqid 0x%x rqid 0x%x ep %p", __func__, qhp, qhp->wq.sq.qid, qhp->wq.rq.qid, qhp->ep); CTR3(KTR_IW_CXGBE, "%s state %d -> %d", __func__, qhp->attr.state, (mask & C4IW_QP_ATTR_NEXT_STATE) ? attrs->next_state : -1); mutex_lock(&qhp->mutex); /* Process attr changes if in IDLE */ if (mask & C4IW_QP_ATTR_VALID_MODIFY) { if (qhp->attr.state != C4IW_QP_STATE_IDLE) { ret = -EIO; goto out; } if (mask & C4IW_QP_ATTR_ENABLE_RDMA_READ) newattr.enable_rdma_read = attrs->enable_rdma_read; if (mask & C4IW_QP_ATTR_ENABLE_RDMA_WRITE) newattr.enable_rdma_write = attrs->enable_rdma_write; if (mask & C4IW_QP_ATTR_ENABLE_RDMA_BIND) newattr.enable_bind = attrs->enable_bind; if (mask & C4IW_QP_ATTR_MAX_ORD) { if (attrs->max_ord > c4iw_max_read_depth) { ret = -EINVAL; goto out; } newattr.max_ord = attrs->max_ord; } if (mask & C4IW_QP_ATTR_MAX_IRD) { if (attrs->max_ird > cur_max_read_depth(rhp)) { ret = -EINVAL; goto out; } newattr.max_ird = attrs->max_ird; } qhp->attr = newattr; } if (!(mask & C4IW_QP_ATTR_NEXT_STATE)) goto out; if (qhp->attr.state == attrs->next_state) goto out; /* Return EINPROGRESS if QP is already in transition state. * Eg: CLOSING->IDLE transition or *->ERROR transition. * This can happen while connection is switching(due to rdma_fini) * from iWARP/RDDP to TOE mode and any inflight RDMA RX data will * reach TOE driver -> TCP stack -> iWARP driver. In this way * iWARP driver keep receiving inflight RDMA RX data until socket * is closed or aborted. And if iWARP CM is in FPDU sate, then * it tries to put QP in TERM state and disconnects endpoint. * But as QP is already in transition state, this event is ignored. */ if ((qhp->attr.state >= C4IW_QP_STATE_ERROR) && (attrs->next_state == C4IW_QP_STATE_TERMINATE)) { ret = -EINPROGRESS; goto out; } switch (qhp->attr.state) { case C4IW_QP_STATE_IDLE: switch (attrs->next_state) { case C4IW_QP_STATE_RTS: if (!(mask & C4IW_QP_ATTR_LLP_STREAM_HANDLE)) { ret = -EINVAL; goto out; } if (!(mask & C4IW_QP_ATTR_MPA_ATTR)) { ret = -EINVAL; goto out; } qhp->attr.mpa_attr = attrs->mpa_attr; qhp->attr.llp_stream_handle = attrs->llp_stream_handle; qhp->ep = qhp->attr.llp_stream_handle; set_state(qhp, C4IW_QP_STATE_RTS); /* * Ref the endpoint here and deref when we * disassociate the endpoint from the QP. This * happens in CLOSING->IDLE transition or *->ERROR * transition. */ c4iw_get_ep(&qhp->ep->com); ret = rdma_init(rhp, qhp); if (ret) goto err; break; case C4IW_QP_STATE_ERROR: set_state(qhp, C4IW_QP_STATE_ERROR); flush_qp(qhp); break; default: ret = -EINVAL; goto out; } break; case C4IW_QP_STATE_RTS: switch (attrs->next_state) { case C4IW_QP_STATE_CLOSING: BUG_ON(atomic_read(&qhp->ep->com.kref.refcount) < 2); t4_set_wq_in_error(&qhp->wq); set_state(qhp, C4IW_QP_STATE_CLOSING); ep = qhp->ep; if (!internal) { abort = 0; disconnect = 1; c4iw_get_ep(&qhp->ep->com); } ret = rdma_fini(rhp, qhp, ep); if (ret) goto err; break; case C4IW_QP_STATE_TERMINATE: t4_set_wq_in_error(&qhp->wq); set_state(qhp, C4IW_QP_STATE_TERMINATE); qhp->attr.layer_etype = attrs->layer_etype; qhp->attr.ecode = attrs->ecode; ep = qhp->ep; if (!internal) { c4iw_get_ep(&qhp->ep->com); terminate = 1; disconnect = 1; } else { terminate = qhp->attr.send_term; ret = rdma_fini(rhp, qhp, ep); if (ret) goto err; } break; case C4IW_QP_STATE_ERROR: t4_set_wq_in_error(&qhp->wq); set_state(qhp, C4IW_QP_STATE_ERROR); if (!internal) { abort = 1; disconnect = 1; ep = qhp->ep; c4iw_get_ep(&qhp->ep->com); } goto err; break; default: ret = -EINVAL; goto out; } break; case C4IW_QP_STATE_CLOSING: /* * Allow kernel users to move to ERROR for qp draining. */ if (!internal && (qhp->ibqp.uobject || attrs->next_state != C4IW_QP_STATE_ERROR)) { ret = -EINVAL; goto out; } switch (attrs->next_state) { case C4IW_QP_STATE_IDLE: flush_qp(qhp); set_state(qhp, C4IW_QP_STATE_IDLE); qhp->attr.llp_stream_handle = NULL; c4iw_put_ep(&qhp->ep->com); qhp->ep = NULL; wake_up(&qhp->wait); break; case C4IW_QP_STATE_ERROR: goto err; default: ret = -EINVAL; goto err; } break; case C4IW_QP_STATE_ERROR: if (attrs->next_state != C4IW_QP_STATE_IDLE) { ret = -EINVAL; goto out; } if (!t4_sq_empty(&qhp->wq) || !t4_rq_empty(&qhp->wq)) { ret = -EINVAL; goto out; } set_state(qhp, C4IW_QP_STATE_IDLE); break; case C4IW_QP_STATE_TERMINATE: if (!internal) { ret = -EINVAL; goto out; } goto err; break; default: printf("%s in a bad state %d\n", __func__, qhp->attr.state); ret = -EINVAL; goto err; break; } goto out; err: CTR3(KTR_IW_CXGBE, "%s disassociating ep %p qpid 0x%x", __func__, qhp->ep, qhp->wq.sq.qid); /* disassociate the LLP connection */ qhp->attr.llp_stream_handle = NULL; if (!ep) ep = qhp->ep; qhp->ep = NULL; set_state(qhp, C4IW_QP_STATE_ERROR); free = 1; abort = 1; BUG_ON(!ep); flush_qp(qhp); wake_up(&qhp->wait); out: mutex_unlock(&qhp->mutex); if (terminate) post_terminate(qhp, NULL, internal ? GFP_ATOMIC : GFP_KERNEL); /* * If disconnect is 1, then we need to initiate a disconnect * on the EP. This can be a normal close (RTS->CLOSING) or * an abnormal close (RTS/CLOSING->ERROR). */ if (disconnect) { __c4iw_ep_disconnect(ep, abort, internal ? GFP_ATOMIC : GFP_KERNEL); c4iw_put_ep(&ep->com); } /* * If free is 1, then we've disassociated the EP from the QP * and we need to dereference the EP. */ if (free) c4iw_put_ep(&ep->com); CTR2(KTR_IW_CXGBE, "%s exit state %d", __func__, qhp->attr.state); return ret; } int c4iw_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata) { struct c4iw_dev *rhp; struct c4iw_qp *qhp; struct c4iw_qp_attributes attrs; CTR2(KTR_IW_CXGBE, "%s ib_qp %p", __func__, ib_qp); qhp = to_c4iw_qp(ib_qp); rhp = qhp->rhp; attrs.next_state = C4IW_QP_STATE_ERROR; if (qhp->attr.state == C4IW_QP_STATE_TERMINATE) c4iw_modify_qp(rhp, qhp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); else c4iw_modify_qp(rhp, qhp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); wait_event(qhp->wait, !qhp->ep); remove_handle(rhp, &rhp->qpidr, qhp->wq.sq.qid); free_ird(rhp, qhp->attr.max_ird); c4iw_qp_rem_ref(ib_qp); CTR3(KTR_IW_CXGBE, "%s ib_qp %p qpid 0x%0x", __func__, ib_qp, qhp->wq.sq.qid); return 0; } struct ib_qp * c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs, struct ib_udata *udata) { struct c4iw_dev *rhp; struct c4iw_qp *qhp; struct c4iw_pd *php; struct c4iw_cq *schp; struct c4iw_cq *rchp; struct c4iw_create_qp_resp uresp; unsigned int sqsize, rqsize; struct c4iw_ucontext *ucontext; int ret; struct c4iw_mm_entry *sq_key_mm = NULL, *rq_key_mm = NULL; struct c4iw_mm_entry *sq_db_key_mm = NULL, *rq_db_key_mm = NULL; CTR2(KTR_IW_CXGBE, "%s ib_pd %p", __func__, pd); if (attrs->qp_type != IB_QPT_RC) return ERR_PTR(-EINVAL); php = to_c4iw_pd(pd); rhp = php->rhp; schp = get_chp(rhp, ((struct c4iw_cq *)attrs->send_cq)->cq.cqid); rchp = get_chp(rhp, ((struct c4iw_cq *)attrs->recv_cq)->cq.cqid); if (!schp || !rchp) return ERR_PTR(-EINVAL); if (attrs->cap.max_inline_data > T4_MAX_SEND_INLINE) return ERR_PTR(-EINVAL); if (attrs->cap.max_recv_wr > rhp->rdev.hw_queue.t4_max_rq_size) return ERR_PTR(-E2BIG); rqsize = attrs->cap.max_recv_wr + 1; if (rqsize < 8) rqsize = 8; if (attrs->cap.max_send_wr > rhp->rdev.hw_queue.t4_max_sq_size) return ERR_PTR(-E2BIG); sqsize = attrs->cap.max_send_wr + 1; if (sqsize < 8) sqsize = 8; ucontext = pd->uobject ? to_c4iw_ucontext(pd->uobject->context) : NULL; qhp = kzalloc(sizeof(*qhp), GFP_KERNEL); if (!qhp) return ERR_PTR(-ENOMEM); qhp->wq.sq.size = sqsize; qhp->wq.sq.memsize = (sqsize + rhp->rdev.hw_queue.t4_eq_status_entries) * sizeof(*qhp->wq.sq.queue) + 16 * sizeof(__be64); qhp->wq.sq.flush_cidx = -1; qhp->wq.rq.size = rqsize; qhp->wq.rq.memsize = (rqsize + rhp->rdev.hw_queue.t4_eq_status_entries) * sizeof(*qhp->wq.rq.queue); if (ucontext) { qhp->wq.sq.memsize = roundup(qhp->wq.sq.memsize, PAGE_SIZE); qhp->wq.rq.memsize = roundup(qhp->wq.rq.memsize, PAGE_SIZE); } CTR5(KTR_IW_CXGBE, "%s sqsize %u sqmemsize %zu rqsize %u rqmemsize %zu", __func__, sqsize, qhp->wq.sq.memsize, rqsize, qhp->wq.rq.memsize); ret = create_qp(&rhp->rdev, &qhp->wq, &schp->cq, &rchp->cq, ucontext ? &ucontext->uctx : &rhp->rdev.uctx); if (ret) goto err1; attrs->cap.max_recv_wr = rqsize - 1; attrs->cap.max_send_wr = sqsize - 1; attrs->cap.max_inline_data = T4_MAX_SEND_INLINE; qhp->rhp = rhp; qhp->attr.pd = php->pdid; qhp->attr.scq = ((struct c4iw_cq *) attrs->send_cq)->cq.cqid; qhp->attr.rcq = ((struct c4iw_cq *) attrs->recv_cq)->cq.cqid; qhp->attr.sq_num_entries = attrs->cap.max_send_wr; qhp->attr.rq_num_entries = attrs->cap.max_recv_wr; qhp->attr.sq_max_sges = attrs->cap.max_send_sge; qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge; qhp->attr.rq_max_sges = attrs->cap.max_recv_sge; qhp->attr.state = C4IW_QP_STATE_IDLE; qhp->attr.next_state = C4IW_QP_STATE_IDLE; qhp->attr.enable_rdma_read = 1; qhp->attr.enable_rdma_write = 1; qhp->attr.enable_bind = 1; qhp->attr.max_ord = 0; qhp->attr.max_ird = 0; qhp->sq_sig_all = attrs->sq_sig_type == IB_SIGNAL_ALL_WR; spin_lock_init(&qhp->lock); mutex_init(&qhp->mutex); init_waitqueue_head(&qhp->wait); kref_init(&qhp->kref); INIT_WORK(&qhp->free_work, free_qp_work); ret = insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.sq.qid); if (ret) goto err2; if (udata) { sq_key_mm = kmalloc(sizeof(*sq_key_mm), GFP_KERNEL); if (!sq_key_mm) { ret = -ENOMEM; goto err3; } rq_key_mm = kmalloc(sizeof(*rq_key_mm), GFP_KERNEL); if (!rq_key_mm) { ret = -ENOMEM; goto err4; } sq_db_key_mm = kmalloc(sizeof(*sq_db_key_mm), GFP_KERNEL); if (!sq_db_key_mm) { ret = -ENOMEM; goto err5; } rq_db_key_mm = kmalloc(sizeof(*rq_db_key_mm), GFP_KERNEL); if (!rq_db_key_mm) { ret = -ENOMEM; goto err6; } uresp.flags = 0; uresp.qid_mask = rhp->rdev.qpmask; uresp.sqid = qhp->wq.sq.qid; uresp.sq_size = qhp->wq.sq.size; uresp.sq_memsize = qhp->wq.sq.memsize; uresp.rqid = qhp->wq.rq.qid; uresp.rq_size = qhp->wq.rq.size; uresp.rq_memsize = qhp->wq.rq.memsize; spin_lock(&ucontext->mmap_lock); uresp.ma_sync_key = 0; uresp.sq_key = ucontext->key; ucontext->key += PAGE_SIZE; uresp.rq_key = ucontext->key; ucontext->key += PAGE_SIZE; uresp.sq_db_gts_key = ucontext->key; ucontext->key += PAGE_SIZE; uresp.rq_db_gts_key = ucontext->key; ucontext->key += PAGE_SIZE; spin_unlock(&ucontext->mmap_lock); ret = ib_copy_to_udata(udata, &uresp, sizeof uresp); if (ret) goto err7; sq_key_mm->key = uresp.sq_key; sq_key_mm->addr = qhp->wq.sq.phys_addr; sq_key_mm->len = PAGE_ALIGN(qhp->wq.sq.memsize); CTR4(KTR_IW_CXGBE, "%s sq_key_mm %x, %x, %d", __func__, sq_key_mm->key, sq_key_mm->addr, sq_key_mm->len); insert_mmap(ucontext, sq_key_mm); rq_key_mm->key = uresp.rq_key; rq_key_mm->addr = qhp->wq.rq.phys_addr; rq_key_mm->len = PAGE_ALIGN(qhp->wq.rq.memsize); CTR4(KTR_IW_CXGBE, "%s rq_key_mm %x, %x, %d", __func__, rq_key_mm->key, rq_key_mm->addr, rq_key_mm->len); insert_mmap(ucontext, rq_key_mm); sq_db_key_mm->key = uresp.sq_db_gts_key; sq_db_key_mm->addr = (u64)qhp->wq.sq.bar2_pa; sq_db_key_mm->len = PAGE_SIZE; CTR4(KTR_IW_CXGBE, "%s sq_db_key_mm %x, %x, %d", __func__, sq_db_key_mm->key, sq_db_key_mm->addr, sq_db_key_mm->len); insert_mmap(ucontext, sq_db_key_mm); rq_db_key_mm->key = uresp.rq_db_gts_key; rq_db_key_mm->addr = (u64)qhp->wq.rq.bar2_pa; rq_db_key_mm->len = PAGE_SIZE; CTR4(KTR_IW_CXGBE, "%s rq_db_key_mm %x, %x, %d", __func__, rq_db_key_mm->key, rq_db_key_mm->addr, rq_db_key_mm->len); insert_mmap(ucontext, rq_db_key_mm); qhp->ucontext = ucontext; } qhp->ibqp.qp_num = qhp->wq.sq.qid; init_timer(&(qhp->timer)); CTR5(KTR_IW_CXGBE, "%s sq id %u size %u memsize %zu num_entries %u", __func__, qhp->wq.sq.qid, qhp->wq.sq.size, qhp->wq.sq.memsize, attrs->cap.max_send_wr); CTR5(KTR_IW_CXGBE, "%s rq id %u size %u memsize %zu num_entries %u", __func__, qhp->wq.rq.qid, qhp->wq.rq.size, qhp->wq.rq.memsize, attrs->cap.max_recv_wr); return &qhp->ibqp; err7: kfree(rq_db_key_mm); err6: kfree(sq_db_key_mm); err5: kfree(rq_key_mm); err4: kfree(sq_key_mm); err3: remove_handle(rhp, &rhp->qpidr, qhp->wq.sq.qid); err2: destroy_qp(&rhp->rdev, &qhp->wq, ucontext ? &ucontext->uctx : &rhp->rdev.uctx); err1: kfree(qhp); return ERR_PTR(ret); } int c4iw_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_udata *udata) { struct c4iw_dev *rhp; struct c4iw_qp *qhp; enum c4iw_qp_attr_mask mask = 0; struct c4iw_qp_attributes attrs; CTR2(KTR_IW_CXGBE, "%s ib_qp %p", __func__, ibqp); /* iwarp does not support the RTR state */ if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR)) attr_mask &= ~IB_QP_STATE; /* Make sure we still have something left to do */ if (!attr_mask) return 0; memset(&attrs, 0, sizeof attrs); qhp = to_c4iw_qp(ibqp); rhp = qhp->rhp; attrs.next_state = c4iw_convert_state(attr->qp_state); attrs.enable_rdma_read = (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) ? 1 : 0; attrs.enable_rdma_write = (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) ? 1 : 0; attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0; mask |= (attr_mask & IB_QP_STATE) ? C4IW_QP_ATTR_NEXT_STATE : 0; mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ? (C4IW_QP_ATTR_ENABLE_RDMA_READ | C4IW_QP_ATTR_ENABLE_RDMA_WRITE | C4IW_QP_ATTR_ENABLE_RDMA_BIND) : 0; return c4iw_modify_qp(rhp, qhp, mask, &attrs, 0); } struct ib_qp *c4iw_get_qp(struct ib_device *dev, int qpn) { CTR3(KTR_IW_CXGBE, "%s ib_dev %p qpn 0x%x", __func__, dev, qpn); return (struct ib_qp *)get_qhp(to_c4iw_dev(dev), qpn); } int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_qp_init_attr *init_attr) { struct c4iw_qp *qhp = to_c4iw_qp(ibqp); memset(attr, 0, sizeof *attr); memset(init_attr, 0, sizeof *init_attr); attr->qp_state = to_ib_qp_state(qhp->attr.state); init_attr->cap.max_send_wr = qhp->attr.sq_num_entries; init_attr->cap.max_recv_wr = qhp->attr.rq_num_entries; init_attr->cap.max_send_sge = qhp->attr.sq_max_sges; init_attr->cap.max_recv_sge = qhp->attr.sq_max_sges; init_attr->cap.max_inline_data = T4_MAX_SEND_INLINE; init_attr->sq_sig_type = qhp->sq_sig_all ? IB_SIGNAL_ALL_WR : 0; return 0; } #endif