596 lines
16 KiB
C
596 lines
16 KiB
C
/*
|
|
* Copyright(c) 2015, 2016 Intel Corporation.
|
|
*
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
|
* redistributing this file, you may do so under either license.
|
|
*
|
|
* GPL LICENSE SUMMARY
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* BSD LICENSE
|
|
*
|
|
* 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.
|
|
* - Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#include "hfi.h"
|
|
#include "verbs_txreq.h"
|
|
#include "qp.h"
|
|
|
|
/* cut down ridiculously long IB macro names */
|
|
#define OP(x) UC_OP(x)
|
|
|
|
/**
|
|
* hfi1_make_uc_req - construct a request packet (SEND, RDMA write)
|
|
* @qp: a pointer to the QP
|
|
*
|
|
* Assume s_lock is held.
|
|
*
|
|
* Return 1 if constructed; otherwise, return 0.
|
|
*/
|
|
int hfi1_make_uc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
|
|
{
|
|
struct hfi1_qp_priv *priv = qp->priv;
|
|
struct ib_other_headers *ohdr;
|
|
struct rvt_swqe *wqe;
|
|
u32 hwords;
|
|
u32 bth0 = 0;
|
|
u32 len;
|
|
u32 pmtu = qp->pmtu;
|
|
int middle = 0;
|
|
|
|
ps->s_txreq = get_txreq(ps->dev, qp);
|
|
if (IS_ERR(ps->s_txreq))
|
|
goto bail_no_tx;
|
|
|
|
if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_SEND_OK)) {
|
|
if (!(ib_rvt_state_ops[qp->state] & RVT_FLUSH_SEND))
|
|
goto bail;
|
|
/* We are in the error state, flush the work request. */
|
|
smp_read_barrier_depends(); /* see post_one_send() */
|
|
if (qp->s_last == READ_ONCE(qp->s_head))
|
|
goto bail;
|
|
/* If DMAs are in progress, we can't flush immediately. */
|
|
if (iowait_sdma_pending(&priv->s_iowait)) {
|
|
qp->s_flags |= RVT_S_WAIT_DMA;
|
|
goto bail;
|
|
}
|
|
clear_ahg(qp);
|
|
wqe = rvt_get_swqe_ptr(qp, qp->s_last);
|
|
hfi1_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR);
|
|
goto done_free_tx;
|
|
}
|
|
|
|
if (priv->hdr_type == HFI1_PKT_TYPE_9B) {
|
|
/* header size in 32-bit words LRH+BTH = (8+12)/4. */
|
|
hwords = 5;
|
|
if (rdma_ah_get_ah_flags(&qp->remote_ah_attr) & IB_AH_GRH)
|
|
ohdr = &ps->s_txreq->phdr.hdr.ibh.u.l.oth;
|
|
else
|
|
ohdr = &ps->s_txreq->phdr.hdr.ibh.u.oth;
|
|
} else {
|
|
/* header size in 32-bit words 16B LRH+BTH = (16+12)/4. */
|
|
hwords = 7;
|
|
if ((rdma_ah_get_ah_flags(&qp->remote_ah_attr) & IB_AH_GRH) &&
|
|
(hfi1_check_mcast(rdma_ah_get_dlid(&qp->remote_ah_attr))))
|
|
ohdr = &ps->s_txreq->phdr.hdr.opah.u.l.oth;
|
|
else
|
|
ohdr = &ps->s_txreq->phdr.hdr.opah.u.oth;
|
|
}
|
|
|
|
/* Get the next send request. */
|
|
wqe = rvt_get_swqe_ptr(qp, qp->s_cur);
|
|
qp->s_wqe = NULL;
|
|
switch (qp->s_state) {
|
|
default:
|
|
if (!(ib_rvt_state_ops[qp->state] &
|
|
RVT_PROCESS_NEXT_SEND_OK))
|
|
goto bail;
|
|
/* Check if send work queue is empty. */
|
|
smp_read_barrier_depends(); /* see post_one_send() */
|
|
if (qp->s_cur == READ_ONCE(qp->s_head)) {
|
|
clear_ahg(qp);
|
|
goto bail;
|
|
}
|
|
/*
|
|
* Local operations are processed immediately
|
|
* after all prior requests have completed.
|
|
*/
|
|
if (wqe->wr.opcode == IB_WR_REG_MR ||
|
|
wqe->wr.opcode == IB_WR_LOCAL_INV) {
|
|
int local_ops = 0;
|
|
int err = 0;
|
|
|
|
if (qp->s_last != qp->s_cur)
|
|
goto bail;
|
|
if (++qp->s_cur == qp->s_size)
|
|
qp->s_cur = 0;
|
|
if (!(wqe->wr.send_flags & RVT_SEND_COMPLETION_ONLY)) {
|
|
err = rvt_invalidate_rkey(
|
|
qp, wqe->wr.ex.invalidate_rkey);
|
|
local_ops = 1;
|
|
}
|
|
hfi1_send_complete(qp, wqe, err ? IB_WC_LOC_PROT_ERR
|
|
: IB_WC_SUCCESS);
|
|
if (local_ops)
|
|
atomic_dec(&qp->local_ops_pending);
|
|
qp->s_hdrwords = 0;
|
|
goto done_free_tx;
|
|
}
|
|
/*
|
|
* Start a new request.
|
|
*/
|
|
qp->s_psn = wqe->psn;
|
|
qp->s_sge.sge = wqe->sg_list[0];
|
|
qp->s_sge.sg_list = wqe->sg_list + 1;
|
|
qp->s_sge.num_sge = wqe->wr.num_sge;
|
|
qp->s_sge.total_len = wqe->length;
|
|
len = wqe->length;
|
|
qp->s_len = len;
|
|
switch (wqe->wr.opcode) {
|
|
case IB_WR_SEND:
|
|
case IB_WR_SEND_WITH_IMM:
|
|
if (len > pmtu) {
|
|
qp->s_state = OP(SEND_FIRST);
|
|
len = pmtu;
|
|
break;
|
|
}
|
|
if (wqe->wr.opcode == IB_WR_SEND) {
|
|
qp->s_state = OP(SEND_ONLY);
|
|
} else {
|
|
qp->s_state =
|
|
OP(SEND_ONLY_WITH_IMMEDIATE);
|
|
/* Immediate data comes after the BTH */
|
|
ohdr->u.imm_data = wqe->wr.ex.imm_data;
|
|
hwords += 1;
|
|
}
|
|
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
|
|
bth0 |= IB_BTH_SOLICITED;
|
|
qp->s_wqe = wqe;
|
|
if (++qp->s_cur >= qp->s_size)
|
|
qp->s_cur = 0;
|
|
break;
|
|
|
|
case IB_WR_RDMA_WRITE:
|
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
ohdr->u.rc.reth.vaddr =
|
|
cpu_to_be64(wqe->rdma_wr.remote_addr);
|
|
ohdr->u.rc.reth.rkey =
|
|
cpu_to_be32(wqe->rdma_wr.rkey);
|
|
ohdr->u.rc.reth.length = cpu_to_be32(len);
|
|
hwords += sizeof(struct ib_reth) / 4;
|
|
if (len > pmtu) {
|
|
qp->s_state = OP(RDMA_WRITE_FIRST);
|
|
len = pmtu;
|
|
break;
|
|
}
|
|
if (wqe->wr.opcode == IB_WR_RDMA_WRITE) {
|
|
qp->s_state = OP(RDMA_WRITE_ONLY);
|
|
} else {
|
|
qp->s_state =
|
|
OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE);
|
|
/* Immediate data comes after the RETH */
|
|
ohdr->u.rc.imm_data = wqe->wr.ex.imm_data;
|
|
hwords += 1;
|
|
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
|
|
bth0 |= IB_BTH_SOLICITED;
|
|
}
|
|
qp->s_wqe = wqe;
|
|
if (++qp->s_cur >= qp->s_size)
|
|
qp->s_cur = 0;
|
|
break;
|
|
|
|
default:
|
|
goto bail;
|
|
}
|
|
break;
|
|
|
|
case OP(SEND_FIRST):
|
|
qp->s_state = OP(SEND_MIDDLE);
|
|
/* FALLTHROUGH */
|
|
case OP(SEND_MIDDLE):
|
|
len = qp->s_len;
|
|
if (len > pmtu) {
|
|
len = pmtu;
|
|
middle = HFI1_CAP_IS_KSET(SDMA_AHG);
|
|
break;
|
|
}
|
|
if (wqe->wr.opcode == IB_WR_SEND) {
|
|
qp->s_state = OP(SEND_LAST);
|
|
} else {
|
|
qp->s_state = OP(SEND_LAST_WITH_IMMEDIATE);
|
|
/* Immediate data comes after the BTH */
|
|
ohdr->u.imm_data = wqe->wr.ex.imm_data;
|
|
hwords += 1;
|
|
}
|
|
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
|
|
bth0 |= IB_BTH_SOLICITED;
|
|
qp->s_wqe = wqe;
|
|
if (++qp->s_cur >= qp->s_size)
|
|
qp->s_cur = 0;
|
|
break;
|
|
|
|
case OP(RDMA_WRITE_FIRST):
|
|
qp->s_state = OP(RDMA_WRITE_MIDDLE);
|
|
/* FALLTHROUGH */
|
|
case OP(RDMA_WRITE_MIDDLE):
|
|
len = qp->s_len;
|
|
if (len > pmtu) {
|
|
len = pmtu;
|
|
middle = HFI1_CAP_IS_KSET(SDMA_AHG);
|
|
break;
|
|
}
|
|
if (wqe->wr.opcode == IB_WR_RDMA_WRITE) {
|
|
qp->s_state = OP(RDMA_WRITE_LAST);
|
|
} else {
|
|
qp->s_state =
|
|
OP(RDMA_WRITE_LAST_WITH_IMMEDIATE);
|
|
/* Immediate data comes after the BTH */
|
|
ohdr->u.imm_data = wqe->wr.ex.imm_data;
|
|
hwords += 1;
|
|
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
|
|
bth0 |= IB_BTH_SOLICITED;
|
|
}
|
|
qp->s_wqe = wqe;
|
|
if (++qp->s_cur >= qp->s_size)
|
|
qp->s_cur = 0;
|
|
break;
|
|
}
|
|
qp->s_len -= len;
|
|
qp->s_hdrwords = hwords;
|
|
ps->s_txreq->sde = priv->s_sde;
|
|
ps->s_txreq->ss = &qp->s_sge;
|
|
ps->s_txreq->s_cur_size = len;
|
|
hfi1_make_ruc_header(qp, ohdr, bth0 | (qp->s_state << 24),
|
|
mask_psn(qp->s_psn++), middle, ps);
|
|
/* pbc */
|
|
ps->s_txreq->hdr_dwords = qp->s_hdrwords + 2;
|
|
return 1;
|
|
|
|
done_free_tx:
|
|
hfi1_put_txreq(ps->s_txreq);
|
|
ps->s_txreq = NULL;
|
|
return 1;
|
|
|
|
bail:
|
|
hfi1_put_txreq(ps->s_txreq);
|
|
|
|
bail_no_tx:
|
|
ps->s_txreq = NULL;
|
|
qp->s_flags &= ~RVT_S_BUSY;
|
|
qp->s_hdrwords = 0;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* hfi1_uc_rcv - handle an incoming UC packet
|
|
* @ibp: the port the packet came in on
|
|
* @hdr: the header of the packet
|
|
* @rcv_flags: flags relevant to rcv processing
|
|
* @data: the packet data
|
|
* @tlen: the length of the packet
|
|
* @qp: the QP for this packet.
|
|
*
|
|
* This is called from qp_rcv() to process an incoming UC packet
|
|
* for the given QP.
|
|
* Called at interrupt level.
|
|
*/
|
|
void hfi1_uc_rcv(struct hfi1_packet *packet)
|
|
{
|
|
struct hfi1_ibport *ibp = rcd_to_iport(packet->rcd);
|
|
void *data = packet->payload;
|
|
u32 tlen = packet->tlen;
|
|
struct rvt_qp *qp = packet->qp;
|
|
struct ib_other_headers *ohdr = packet->ohdr;
|
|
u32 opcode = packet->opcode;
|
|
u32 hdrsize = packet->hlen;
|
|
u32 psn;
|
|
u32 pad = packet->pad;
|
|
struct ib_wc wc;
|
|
u32 pmtu = qp->pmtu;
|
|
struct ib_reth *reth;
|
|
int ret;
|
|
u8 extra_bytes = pad + packet->extra_byte + (SIZE_OF_CRC << 2);
|
|
|
|
if (hfi1_ruc_check_hdr(ibp, packet))
|
|
return;
|
|
|
|
process_ecn(qp, packet, true);
|
|
|
|
psn = ib_bth_get_psn(ohdr);
|
|
/* Compare the PSN verses the expected PSN. */
|
|
if (unlikely(cmp_psn(psn, qp->r_psn) != 0)) {
|
|
/*
|
|
* Handle a sequence error.
|
|
* Silently drop any current message.
|
|
*/
|
|
qp->r_psn = psn;
|
|
inv:
|
|
if (qp->r_state == OP(SEND_FIRST) ||
|
|
qp->r_state == OP(SEND_MIDDLE)) {
|
|
set_bit(RVT_R_REWIND_SGE, &qp->r_aflags);
|
|
qp->r_sge.num_sge = 0;
|
|
} else {
|
|
rvt_put_ss(&qp->r_sge);
|
|
}
|
|
qp->r_state = OP(SEND_LAST);
|
|
switch (opcode) {
|
|
case OP(SEND_FIRST):
|
|
case OP(SEND_ONLY):
|
|
case OP(SEND_ONLY_WITH_IMMEDIATE):
|
|
goto send_first;
|
|
|
|
case OP(RDMA_WRITE_FIRST):
|
|
case OP(RDMA_WRITE_ONLY):
|
|
case OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE):
|
|
goto rdma_first;
|
|
|
|
default:
|
|
goto drop;
|
|
}
|
|
}
|
|
|
|
/* Check for opcode sequence errors. */
|
|
switch (qp->r_state) {
|
|
case OP(SEND_FIRST):
|
|
case OP(SEND_MIDDLE):
|
|
if (opcode == OP(SEND_MIDDLE) ||
|
|
opcode == OP(SEND_LAST) ||
|
|
opcode == OP(SEND_LAST_WITH_IMMEDIATE))
|
|
break;
|
|
goto inv;
|
|
|
|
case OP(RDMA_WRITE_FIRST):
|
|
case OP(RDMA_WRITE_MIDDLE):
|
|
if (opcode == OP(RDMA_WRITE_MIDDLE) ||
|
|
opcode == OP(RDMA_WRITE_LAST) ||
|
|
opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE))
|
|
break;
|
|
goto inv;
|
|
|
|
default:
|
|
if (opcode == OP(SEND_FIRST) ||
|
|
opcode == OP(SEND_ONLY) ||
|
|
opcode == OP(SEND_ONLY_WITH_IMMEDIATE) ||
|
|
opcode == OP(RDMA_WRITE_FIRST) ||
|
|
opcode == OP(RDMA_WRITE_ONLY) ||
|
|
opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE))
|
|
break;
|
|
goto inv;
|
|
}
|
|
|
|
if (qp->state == IB_QPS_RTR && !(qp->r_flags & RVT_R_COMM_EST))
|
|
rvt_comm_est(qp);
|
|
|
|
/* OK, process the packet. */
|
|
switch (opcode) {
|
|
case OP(SEND_FIRST):
|
|
case OP(SEND_ONLY):
|
|
case OP(SEND_ONLY_WITH_IMMEDIATE):
|
|
send_first:
|
|
if (test_and_clear_bit(RVT_R_REWIND_SGE, &qp->r_aflags)) {
|
|
qp->r_sge = qp->s_rdma_read_sge;
|
|
} else {
|
|
ret = hfi1_rvt_get_rwqe(qp, 0);
|
|
if (ret < 0)
|
|
goto op_err;
|
|
if (!ret)
|
|
goto drop;
|
|
/*
|
|
* qp->s_rdma_read_sge will be the owner
|
|
* of the mr references.
|
|
*/
|
|
qp->s_rdma_read_sge = qp->r_sge;
|
|
}
|
|
qp->r_rcv_len = 0;
|
|
if (opcode == OP(SEND_ONLY))
|
|
goto no_immediate_data;
|
|
else if (opcode == OP(SEND_ONLY_WITH_IMMEDIATE))
|
|
goto send_last_imm;
|
|
/* FALLTHROUGH */
|
|
case OP(SEND_MIDDLE):
|
|
/* Check for invalid length PMTU or posted rwqe len. */
|
|
/*
|
|
* There will be no padding for 9B packet but 16B packets
|
|
* will come in with some padding since we always add
|
|
* CRC and LT bytes which will need to be flit aligned
|
|
*/
|
|
if (unlikely(tlen != (hdrsize + pmtu + extra_bytes)))
|
|
goto rewind;
|
|
qp->r_rcv_len += pmtu;
|
|
if (unlikely(qp->r_rcv_len > qp->r_len))
|
|
goto rewind;
|
|
hfi1_copy_sge(&qp->r_sge, data, pmtu, false, false);
|
|
break;
|
|
|
|
case OP(SEND_LAST_WITH_IMMEDIATE):
|
|
send_last_imm:
|
|
wc.ex.imm_data = ohdr->u.imm_data;
|
|
wc.wc_flags = IB_WC_WITH_IMM;
|
|
goto send_last;
|
|
case OP(SEND_LAST):
|
|
no_immediate_data:
|
|
wc.ex.imm_data = 0;
|
|
wc.wc_flags = 0;
|
|
send_last:
|
|
/* Check for invalid length. */
|
|
/* LAST len should be >= 1 */
|
|
if (unlikely(tlen < (hdrsize + extra_bytes)))
|
|
goto rewind;
|
|
/* Don't count the CRC. */
|
|
tlen -= (hdrsize + extra_bytes);
|
|
wc.byte_len = tlen + qp->r_rcv_len;
|
|
if (unlikely(wc.byte_len > qp->r_len))
|
|
goto rewind;
|
|
wc.opcode = IB_WC_RECV;
|
|
hfi1_copy_sge(&qp->r_sge, data, tlen, false, false);
|
|
rvt_put_ss(&qp->s_rdma_read_sge);
|
|
last_imm:
|
|
wc.wr_id = qp->r_wr_id;
|
|
wc.status = IB_WC_SUCCESS;
|
|
wc.qp = &qp->ibqp;
|
|
wc.src_qp = qp->remote_qpn;
|
|
wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr) & U16_MAX;
|
|
/*
|
|
* It seems that IB mandates the presence of an SL in a
|
|
* work completion only for the UD transport (see section
|
|
* 11.4.2 of IBTA Vol. 1).
|
|
*
|
|
* However, the way the SL is chosen below is consistent
|
|
* with the way that IB/qib works and is trying avoid
|
|
* introducing incompatibilities.
|
|
*
|
|
* See also OPA Vol. 1, section 9.7.6, and table 9-17.
|
|
*/
|
|
wc.sl = rdma_ah_get_sl(&qp->remote_ah_attr);
|
|
/* zero fields that are N/A */
|
|
wc.vendor_err = 0;
|
|
wc.pkey_index = 0;
|
|
wc.dlid_path_bits = 0;
|
|
wc.port_num = 0;
|
|
/* Signal completion event if the solicited bit is set. */
|
|
rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc,
|
|
(ohdr->bth[0] &
|
|
cpu_to_be32(IB_BTH_SOLICITED)) != 0);
|
|
break;
|
|
|
|
case OP(RDMA_WRITE_FIRST):
|
|
case OP(RDMA_WRITE_ONLY):
|
|
case OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE): /* consume RWQE */
|
|
rdma_first:
|
|
if (unlikely(!(qp->qp_access_flags &
|
|
IB_ACCESS_REMOTE_WRITE))) {
|
|
goto drop;
|
|
}
|
|
reth = &ohdr->u.rc.reth;
|
|
qp->r_len = be32_to_cpu(reth->length);
|
|
qp->r_rcv_len = 0;
|
|
qp->r_sge.sg_list = NULL;
|
|
if (qp->r_len != 0) {
|
|
u32 rkey = be32_to_cpu(reth->rkey);
|
|
u64 vaddr = be64_to_cpu(reth->vaddr);
|
|
int ok;
|
|
|
|
/* Check rkey */
|
|
ok = rvt_rkey_ok(qp, &qp->r_sge.sge, qp->r_len,
|
|
vaddr, rkey, IB_ACCESS_REMOTE_WRITE);
|
|
if (unlikely(!ok))
|
|
goto drop;
|
|
qp->r_sge.num_sge = 1;
|
|
} else {
|
|
qp->r_sge.num_sge = 0;
|
|
qp->r_sge.sge.mr = NULL;
|
|
qp->r_sge.sge.vaddr = NULL;
|
|
qp->r_sge.sge.length = 0;
|
|
qp->r_sge.sge.sge_length = 0;
|
|
}
|
|
if (opcode == OP(RDMA_WRITE_ONLY)) {
|
|
goto rdma_last;
|
|
} else if (opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE)) {
|
|
wc.ex.imm_data = ohdr->u.rc.imm_data;
|
|
goto rdma_last_imm;
|
|
}
|
|
/* FALLTHROUGH */
|
|
case OP(RDMA_WRITE_MIDDLE):
|
|
/* Check for invalid length PMTU or posted rwqe len. */
|
|
if (unlikely(tlen != (hdrsize + pmtu + 4)))
|
|
goto drop;
|
|
qp->r_rcv_len += pmtu;
|
|
if (unlikely(qp->r_rcv_len > qp->r_len))
|
|
goto drop;
|
|
hfi1_copy_sge(&qp->r_sge, data, pmtu, true, false);
|
|
break;
|
|
|
|
case OP(RDMA_WRITE_LAST_WITH_IMMEDIATE):
|
|
wc.ex.imm_data = ohdr->u.imm_data;
|
|
rdma_last_imm:
|
|
wc.wc_flags = IB_WC_WITH_IMM;
|
|
|
|
/* Check for invalid length. */
|
|
/* LAST len should be >= 1 */
|
|
if (unlikely(tlen < (hdrsize + pad + 4)))
|
|
goto drop;
|
|
/* Don't count the CRC. */
|
|
tlen -= (hdrsize + extra_bytes);
|
|
if (unlikely(tlen + qp->r_rcv_len != qp->r_len))
|
|
goto drop;
|
|
if (test_and_clear_bit(RVT_R_REWIND_SGE, &qp->r_aflags)) {
|
|
rvt_put_ss(&qp->s_rdma_read_sge);
|
|
} else {
|
|
ret = hfi1_rvt_get_rwqe(qp, 1);
|
|
if (ret < 0)
|
|
goto op_err;
|
|
if (!ret)
|
|
goto drop;
|
|
}
|
|
wc.byte_len = qp->r_len;
|
|
wc.opcode = IB_WC_RECV_RDMA_WITH_IMM;
|
|
hfi1_copy_sge(&qp->r_sge, data, tlen, true, false);
|
|
rvt_put_ss(&qp->r_sge);
|
|
goto last_imm;
|
|
|
|
case OP(RDMA_WRITE_LAST):
|
|
rdma_last:
|
|
/* Check for invalid length. */
|
|
/* LAST len should be >= 1 */
|
|
if (unlikely(tlen < (hdrsize + pad + 4)))
|
|
goto drop;
|
|
/* Don't count the CRC. */
|
|
tlen -= (hdrsize + extra_bytes);
|
|
if (unlikely(tlen + qp->r_rcv_len != qp->r_len))
|
|
goto drop;
|
|
hfi1_copy_sge(&qp->r_sge, data, tlen, true, false);
|
|
rvt_put_ss(&qp->r_sge);
|
|
break;
|
|
|
|
default:
|
|
/* Drop packet for unknown opcodes. */
|
|
goto drop;
|
|
}
|
|
qp->r_psn++;
|
|
qp->r_state = opcode;
|
|
return;
|
|
|
|
rewind:
|
|
set_bit(RVT_R_REWIND_SGE, &qp->r_aflags);
|
|
qp->r_sge.num_sge = 0;
|
|
drop:
|
|
ibp->rvp.n_pkt_drops++;
|
|
return;
|
|
|
|
op_err:
|
|
rvt_rc_error(qp, IB_WC_LOC_QP_OP_ERR);
|
|
}
|