2007-02-13 00:16:18 +00:00
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/*
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* Copyright (c) 2006 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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2009-10-07 13:09:06 +00:00
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#include <linux/sched.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
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#include <linux/gfp.h>
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2007-02-13 00:16:18 +00:00
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#include "iwch_provider.h"
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#include "iwch.h"
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#include "iwch_cm.h"
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#include "cxio_hal.h"
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2008-07-15 06:48:53 +00:00
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#include "cxio_resource.h"
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2007-02-13 00:16:18 +00:00
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#define NO_SUPPORT -1
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2018-07-18 16:25:14 +00:00
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static int build_rdma_send(union t3_wr *wqe, const struct ib_send_wr *wr,
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u8 *flit_cnt)
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2007-02-13 00:16:18 +00:00
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{
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int i;
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u32 plen;
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switch (wr->opcode) {
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case IB_WR_SEND:
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if (wr->send_flags & IB_SEND_SOLICITED)
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wqe->send.rdmaop = T3_SEND_WITH_SE;
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else
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wqe->send.rdmaop = T3_SEND;
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wqe->send.rem_stag = 0;
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break;
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2008-07-15 06:48:45 +00:00
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case IB_WR_SEND_WITH_INV:
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if (wr->send_flags & IB_SEND_SOLICITED)
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wqe->send.rdmaop = T3_SEND_WITH_SE_INV;
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else
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wqe->send.rdmaop = T3_SEND_WITH_INV;
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wqe->send.rem_stag = cpu_to_be32(wr->ex.invalidate_rkey);
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2007-02-13 00:16:18 +00:00
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break;
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default:
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2008-07-15 06:48:45 +00:00
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return -EINVAL;
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2007-02-13 00:16:18 +00:00
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}
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if (wr->num_sge > T3_MAX_SGE)
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return -EINVAL;
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wqe->send.reserved[0] = 0;
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wqe->send.reserved[1] = 0;
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wqe->send.reserved[2] = 0;
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2008-07-15 06:48:45 +00:00
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plen = 0;
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for (i = 0; i < wr->num_sge; i++) {
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if ((plen + wr->sg_list[i].length) < plen)
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return -EMSGSIZE;
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plen += wr->sg_list[i].length;
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wqe->send.sgl[i].stag = cpu_to_be32(wr->sg_list[i].lkey);
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wqe->send.sgl[i].len = cpu_to_be32(wr->sg_list[i].length);
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wqe->send.sgl[i].to = cpu_to_be64(wr->sg_list[i].addr);
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2007-02-13 00:16:18 +00:00
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}
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2008-07-15 06:48:45 +00:00
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wqe->send.num_sgle = cpu_to_be32(wr->num_sge);
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*flit_cnt = 4 + ((wr->num_sge) << 1);
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2007-02-13 00:16:18 +00:00
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wqe->send.plen = cpu_to_be32(plen);
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return 0;
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}
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2018-07-18 16:25:14 +00:00
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static int build_rdma_write(union t3_wr *wqe, const struct ib_send_wr *wr,
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u8 *flit_cnt)
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2007-02-13 00:16:18 +00:00
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{
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int i;
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u32 plen;
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if (wr->num_sge > T3_MAX_SGE)
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return -EINVAL;
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wqe->write.rdmaop = T3_RDMA_WRITE;
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wqe->write.reserved[0] = 0;
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wqe->write.reserved[1] = 0;
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wqe->write.reserved[2] = 0;
|
2015-10-08 08:16:33 +00:00
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wqe->write.stag_sink = cpu_to_be32(rdma_wr(wr)->rkey);
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wqe->write.to_sink = cpu_to_be64(rdma_wr(wr)->remote_addr);
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2007-02-13 00:16:18 +00:00
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if (wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM) {
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plen = 4;
|
2008-04-17 04:09:32 +00:00
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wqe->write.sgl[0].stag = wr->ex.imm_data;
|
2009-01-18 01:11:57 +00:00
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wqe->write.sgl[0].len = cpu_to_be32(0);
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wqe->write.num_sgle = cpu_to_be32(0);
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2007-02-13 00:16:18 +00:00
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*flit_cnt = 6;
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} else {
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plen = 0;
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for (i = 0; i < wr->num_sge; i++) {
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if ((plen + wr->sg_list[i].length) < plen) {
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return -EMSGSIZE;
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}
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plen += wr->sg_list[i].length;
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wqe->write.sgl[i].stag =
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cpu_to_be32(wr->sg_list[i].lkey);
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wqe->write.sgl[i].len =
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cpu_to_be32(wr->sg_list[i].length);
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wqe->write.sgl[i].to =
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cpu_to_be64(wr->sg_list[i].addr);
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}
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wqe->write.num_sgle = cpu_to_be32(wr->num_sge);
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*flit_cnt = 5 + ((wr->num_sge) << 1);
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}
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wqe->write.plen = cpu_to_be32(plen);
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|
return 0;
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|
}
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|
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|
2018-07-18 16:25:14 +00:00
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static int build_rdma_read(union t3_wr *wqe, const struct ib_send_wr *wr,
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u8 *flit_cnt)
|
2007-02-13 00:16:18 +00:00
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{
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if (wr->num_sge > 1)
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return -EINVAL;
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|
|
wqe->read.rdmaop = T3_READ_REQ;
|
2008-07-15 06:48:45 +00:00
|
|
|
if (wr->opcode == IB_WR_RDMA_READ_WITH_INV)
|
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wqe->read.local_inv = 1;
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else
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|
wqe->read.local_inv = 0;
|
2007-02-13 00:16:18 +00:00
|
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|
wqe->read.reserved[0] = 0;
|
|
|
|
|
wqe->read.reserved[1] = 0;
|
2015-10-08 08:16:33 +00:00
|
|
|
wqe->read.rem_stag = cpu_to_be32(rdma_wr(wr)->rkey);
|
|
|
|
|
wqe->read.rem_to = cpu_to_be64(rdma_wr(wr)->remote_addr);
|
2007-02-13 00:16:18 +00:00
|
|
|
wqe->read.local_stag = cpu_to_be32(wr->sg_list[0].lkey);
|
|
|
|
|
wqe->read.local_len = cpu_to_be32(wr->sg_list[0].length);
|
|
|
|
|
wqe->read.local_to = cpu_to_be64(wr->sg_list[0].addr);
|
|
|
|
|
*flit_cnt = sizeof(struct t3_rdma_read_wr) >> 3;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2018-07-18 16:25:14 +00:00
|
|
|
static int build_memreg(union t3_wr *wqe, const struct ib_reg_wr *wr,
|
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|
|
u8 *flit_cnt, int *wr_cnt, struct t3_wq *wq)
|
2015-10-13 16:11:29 +00:00
|
|
|
{
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|
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|
struct iwch_mr *mhp = to_iwch_mr(wr->mr);
|
|
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|
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int i;
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|
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|
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__be64 *p;
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|
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|
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|
|
if (mhp->npages > T3_MAX_FASTREG_DEPTH)
|
|
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|
|
return -EINVAL;
|
|
|
|
|
*wr_cnt = 1;
|
|
|
|
|
wqe->fastreg.stag = cpu_to_be32(wr->key);
|
|
|
|
|
wqe->fastreg.len = cpu_to_be32(mhp->ibmr.length);
|
|
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|
|
wqe->fastreg.va_base_hi = cpu_to_be32(mhp->ibmr.iova >> 32);
|
|
|
|
|
wqe->fastreg.va_base_lo_fbo =
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|
|
|
|
cpu_to_be32(mhp->ibmr.iova & 0xffffffff);
|
|
|
|
|
wqe->fastreg.page_type_perms = cpu_to_be32(
|
|
|
|
|
V_FR_PAGE_COUNT(mhp->npages) |
|
|
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|
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V_FR_PAGE_SIZE(ilog2(wr->mr->page_size) - 12) |
|
|
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|
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V_FR_TYPE(TPT_VATO) |
|
|
|
|
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V_FR_PERMS(iwch_ib_to_tpt_access(wr->access)));
|
|
|
|
|
p = &wqe->fastreg.pbl_addrs[0];
|
|
|
|
|
for (i = 0; i < mhp->npages; i++, p++) {
|
|
|
|
|
|
|
|
|
|
/* If we need a 2nd WR, then set it up */
|
|
|
|
|
if (i == T3_MAX_FASTREG_FRAG) {
|
|
|
|
|
*wr_cnt = 2;
|
|
|
|
|
wqe = (union t3_wr *)(wq->queue +
|
|
|
|
|
Q_PTR2IDX((wq->wptr+1), wq->size_log2));
|
|
|
|
|
build_fw_riwrh((void *)wqe, T3_WR_FASTREG, 0,
|
|
|
|
|
Q_GENBIT(wq->wptr + 1, wq->size_log2),
|
|
|
|
|
0, 1 + mhp->npages - T3_MAX_FASTREG_FRAG,
|
|
|
|
|
T3_EOP);
|
|
|
|
|
|
|
|
|
|
p = &wqe->pbl_frag.pbl_addrs[0];
|
|
|
|
|
}
|
|
|
|
|
*p = cpu_to_be64((u64)mhp->pages[i]);
|
|
|
|
|
}
|
|
|
|
|
*flit_cnt = 5 + mhp->npages;
|
|
|
|
|
if (*flit_cnt > 15)
|
|
|
|
|
*flit_cnt = 15;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2018-07-18 16:25:14 +00:00
|
|
|
static int build_inv_stag(union t3_wr *wqe, const struct ib_send_wr *wr,
|
|
|
|
|
u8 *flit_cnt)
|
2008-07-15 06:48:45 +00:00
|
|
|
{
|
|
|
|
|
wqe->local_inv.stag = cpu_to_be32(wr->ex.invalidate_rkey);
|
|
|
|
|
wqe->local_inv.reserved = 0;
|
|
|
|
|
*flit_cnt = sizeof(struct t3_local_inv_wr) >> 3;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2007-02-21 10:52:49 +00:00
|
|
|
static int iwch_sgl2pbl_map(struct iwch_dev *rhp, struct ib_sge *sg_list,
|
|
|
|
|
u32 num_sgle, u32 * pbl_addr, u8 * page_size)
|
2007-02-13 00:16:18 +00:00
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
struct iwch_mr *mhp;
|
2009-02-11 00:38:22 +00:00
|
|
|
u64 offset;
|
2007-02-13 00:16:18 +00:00
|
|
|
for (i = 0; i < num_sgle; i++) {
|
|
|
|
|
|
|
|
|
|
mhp = get_mhp(rhp, (sg_list[i].lkey) >> 8);
|
|
|
|
|
if (!mhp) {
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s %d\n", __func__, __LINE__);
|
2007-02-13 00:16:18 +00:00
|
|
|
return -EIO;
|
|
|
|
|
}
|
|
|
|
|
if (!mhp->attr.state) {
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s %d\n", __func__, __LINE__);
|
2007-02-13 00:16:18 +00:00
|
|
|
return -EIO;
|
|
|
|
|
}
|
|
|
|
|
if (mhp->attr.zbva) {
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s %d\n", __func__, __LINE__);
|
2007-02-13 00:16:18 +00:00
|
|
|
return -EIO;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (sg_list[i].addr < mhp->attr.va_fbo) {
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s %d\n", __func__, __LINE__);
|
2007-02-13 00:16:18 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
if (sg_list[i].addr + ((u64) sg_list[i].length) <
|
|
|
|
|
sg_list[i].addr) {
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s %d\n", __func__, __LINE__);
|
2007-02-13 00:16:18 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
if (sg_list[i].addr + ((u64) sg_list[i].length) >
|
|
|
|
|
mhp->attr.va_fbo + ((u64) mhp->attr.len)) {
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s %d\n", __func__, __LINE__);
|
2007-02-13 00:16:18 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
}
|
|
|
|
|
offset = sg_list[i].addr - mhp->attr.va_fbo;
|
2009-02-11 00:38:22 +00:00
|
|
|
offset += mhp->attr.va_fbo &
|
|
|
|
|
((1UL << (12 + mhp->attr.page_size)) - 1);
|
2007-02-13 00:16:18 +00:00
|
|
|
pbl_addr[i] = ((mhp->attr.pbl_addr -
|
|
|
|
|
rhp->rdev.rnic_info.pbl_base) >> 3) +
|
|
|
|
|
(offset >> (12 + mhp->attr.page_size));
|
|
|
|
|
page_size[i] = mhp->attr.page_size;
|
|
|
|
|
}
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2008-07-15 06:48:53 +00:00
|
|
|
static int build_rdma_recv(struct iwch_qp *qhp, union t3_wr *wqe,
|
2018-07-18 16:25:32 +00:00
|
|
|
const struct ib_recv_wr *wr)
|
2007-02-13 00:16:18 +00:00
|
|
|
{
|
2008-07-15 06:48:53 +00:00
|
|
|
int i, err = 0;
|
|
|
|
|
u32 pbl_addr[T3_MAX_SGE];
|
|
|
|
|
u8 page_size[T3_MAX_SGE];
|
|
|
|
|
|
|
|
|
|
err = iwch_sgl2pbl_map(qhp->rhp, wr->sg_list, wr->num_sge, pbl_addr,
|
|
|
|
|
page_size);
|
|
|
|
|
if (err)
|
|
|
|
|
return err;
|
|
|
|
|
wqe->recv.pagesz[0] = page_size[0];
|
|
|
|
|
wqe->recv.pagesz[1] = page_size[1];
|
|
|
|
|
wqe->recv.pagesz[2] = page_size[2];
|
|
|
|
|
wqe->recv.pagesz[3] = page_size[3];
|
2007-02-13 00:16:18 +00:00
|
|
|
wqe->recv.num_sgle = cpu_to_be32(wr->num_sge);
|
|
|
|
|
for (i = 0; i < wr->num_sge; i++) {
|
|
|
|
|
wqe->recv.sgl[i].stag = cpu_to_be32(wr->sg_list[i].lkey);
|
|
|
|
|
wqe->recv.sgl[i].len = cpu_to_be32(wr->sg_list[i].length);
|
2008-07-15 06:48:53 +00:00
|
|
|
|
|
|
|
|
/* to in the WQE == the offset into the page */
|
2009-02-17 05:23:32 +00:00
|
|
|
wqe->recv.sgl[i].to = cpu_to_be64(((u32)wr->sg_list[i].addr) &
|
|
|
|
|
((1UL << (12 + page_size[i])) - 1));
|
2008-07-15 06:48:53 +00:00
|
|
|
|
|
|
|
|
/* pbl_addr is the adapters address in the PBL */
|
|
|
|
|
wqe->recv.pbl_addr[i] = cpu_to_be32(pbl_addr[i]);
|
|
|
|
|
}
|
|
|
|
|
for (; i < T3_MAX_SGE; i++) {
|
|
|
|
|
wqe->recv.sgl[i].stag = 0;
|
|
|
|
|
wqe->recv.sgl[i].len = 0;
|
|
|
|
|
wqe->recv.sgl[i].to = 0;
|
|
|
|
|
wqe->recv.pbl_addr[i] = 0;
|
|
|
|
|
}
|
|
|
|
|
qhp->wq.rq[Q_PTR2IDX(qhp->wq.rq_wptr,
|
|
|
|
|
qhp->wq.rq_size_log2)].wr_id = wr->wr_id;
|
|
|
|
|
qhp->wq.rq[Q_PTR2IDX(qhp->wq.rq_wptr,
|
|
|
|
|
qhp->wq.rq_size_log2)].pbl_addr = 0;
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int build_zero_stag_recv(struct iwch_qp *qhp, union t3_wr *wqe,
|
2018-07-18 16:25:32 +00:00
|
|
|
const struct ib_recv_wr *wr)
|
2008-07-15 06:48:53 +00:00
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
u32 pbl_addr;
|
|
|
|
|
u32 pbl_offset;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The T3 HW requires the PBL in the HW recv descriptor to reference
|
|
|
|
|
* a PBL entry. So we allocate the max needed PBL memory here and pass
|
|
|
|
|
* it to the uP in the recv WR. The uP will build the PBL and setup
|
|
|
|
|
* the HW recv descriptor.
|
|
|
|
|
*/
|
|
|
|
|
pbl_addr = cxio_hal_pblpool_alloc(&qhp->rhp->rdev, T3_STAG0_PBL_SIZE);
|
|
|
|
|
if (!pbl_addr)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Compute the 8B aligned offset.
|
|
|
|
|
*/
|
|
|
|
|
pbl_offset = (pbl_addr - qhp->rhp->rdev.rnic_info.pbl_base) >> 3;
|
|
|
|
|
|
|
|
|
|
wqe->recv.num_sgle = cpu_to_be32(wr->num_sge);
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < wr->num_sge; i++) {
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Use a 128MB page size. This and an imposed 128MB
|
|
|
|
|
* sge length limit allows us to require only a 2-entry HW
|
|
|
|
|
* PBL for each SGE. This restriction is acceptable since
|
|
|
|
|
* since it is not possible to allocate 128MB of contiguous
|
|
|
|
|
* DMA coherent memory!
|
|
|
|
|
*/
|
|
|
|
|
if (wr->sg_list[i].length > T3_STAG0_MAX_PBE_LEN)
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
wqe->recv.pagesz[i] = T3_STAG0_PAGE_SHIFT;
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* T3 restricts a recv to all zero-stag or all non-zero-stag.
|
|
|
|
|
*/
|
|
|
|
|
if (wr->sg_list[i].lkey != 0)
|
|
|
|
|
return -EINVAL;
|
|
|
|
|
wqe->recv.sgl[i].stag = 0;
|
|
|
|
|
wqe->recv.sgl[i].len = cpu_to_be32(wr->sg_list[i].length);
|
2007-11-26 17:28:46 +00:00
|
|
|
wqe->recv.sgl[i].to = cpu_to_be64(wr->sg_list[i].addr);
|
2008-07-15 06:48:53 +00:00
|
|
|
wqe->recv.pbl_addr[i] = cpu_to_be32(pbl_offset);
|
|
|
|
|
pbl_offset += 2;
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
for (; i < T3_MAX_SGE; i++) {
|
2008-07-15 06:48:53 +00:00
|
|
|
wqe->recv.pagesz[i] = 0;
|
2007-02-13 00:16:18 +00:00
|
|
|
wqe->recv.sgl[i].stag = 0;
|
|
|
|
|
wqe->recv.sgl[i].len = 0;
|
|
|
|
|
wqe->recv.sgl[i].to = 0;
|
2008-07-15 06:48:53 +00:00
|
|
|
wqe->recv.pbl_addr[i] = 0;
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
2008-07-15 06:48:53 +00:00
|
|
|
qhp->wq.rq[Q_PTR2IDX(qhp->wq.rq_wptr,
|
|
|
|
|
qhp->wq.rq_size_log2)].wr_id = wr->wr_id;
|
|
|
|
|
qhp->wq.rq[Q_PTR2IDX(qhp->wq.rq_wptr,
|
|
|
|
|
qhp->wq.rq_size_log2)].pbl_addr = pbl_addr;
|
2007-02-13 00:16:18 +00:00
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
2018-07-18 16:25:32 +00:00
|
|
|
int iwch_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
|
|
|
|
|
const struct ib_send_wr **bad_wr)
|
2007-02-13 00:16:18 +00:00
|
|
|
{
|
|
|
|
|
int err = 0;
|
2008-05-16 21:58:40 +00:00
|
|
|
u8 uninitialized_var(t3_wr_flit_cnt);
|
2007-02-13 00:16:18 +00:00
|
|
|
enum t3_wr_opcode t3_wr_opcode = 0;
|
|
|
|
|
enum t3_wr_flags t3_wr_flags;
|
|
|
|
|
struct iwch_qp *qhp;
|
|
|
|
|
u32 idx;
|
|
|
|
|
union t3_wr *wqe;
|
|
|
|
|
u32 num_wrs;
|
|
|
|
|
unsigned long flag;
|
|
|
|
|
struct t3_swsq *sqp;
|
2008-07-15 06:48:45 +00:00
|
|
|
int wr_cnt = 1;
|
2007-02-13 00:16:18 +00:00
|
|
|
|
|
|
|
|
qhp = to_iwch_qp(ibqp);
|
|
|
|
|
spin_lock_irqsave(&qhp->lock, flag);
|
|
|
|
|
if (qhp->attr.state > IWCH_QP_STATE_RTS) {
|
|
|
|
|
spin_unlock_irqrestore(&qhp->lock, flag);
|
2009-12-16 07:39:10 +00:00
|
|
|
err = -EINVAL;
|
|
|
|
|
goto out;
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
num_wrs = Q_FREECNT(qhp->wq.sq_rptr, qhp->wq.sq_wptr,
|
|
|
|
|
qhp->wq.sq_size_log2);
|
2010-07-19 20:30:14 +00:00
|
|
|
if (num_wrs == 0) {
|
2007-02-13 00:16:18 +00:00
|
|
|
spin_unlock_irqrestore(&qhp->lock, flag);
|
2009-12-16 07:39:10 +00:00
|
|
|
err = -ENOMEM;
|
|
|
|
|
goto out;
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
while (wr) {
|
|
|
|
|
if (num_wrs == 0) {
|
|
|
|
|
err = -ENOMEM;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
idx = Q_PTR2IDX(qhp->wq.wptr, qhp->wq.size_log2);
|
|
|
|
|
wqe = (union t3_wr *) (qhp->wq.queue + idx);
|
|
|
|
|
t3_wr_flags = 0;
|
|
|
|
|
if (wr->send_flags & IB_SEND_SOLICITED)
|
|
|
|
|
t3_wr_flags |= T3_SOLICITED_EVENT_FLAG;
|
|
|
|
|
if (wr->send_flags & IB_SEND_SIGNALED)
|
|
|
|
|
t3_wr_flags |= T3_COMPLETION_FLAG;
|
|
|
|
|
sqp = qhp->wq.sq +
|
|
|
|
|
Q_PTR2IDX(qhp->wq.sq_wptr, qhp->wq.sq_size_log2);
|
|
|
|
|
switch (wr->opcode) {
|
|
|
|
|
case IB_WR_SEND:
|
2008-07-15 06:48:45 +00:00
|
|
|
case IB_WR_SEND_WITH_INV:
|
|
|
|
|
if (wr->send_flags & IB_SEND_FENCE)
|
|
|
|
|
t3_wr_flags |= T3_READ_FENCE_FLAG;
|
2007-02-13 00:16:18 +00:00
|
|
|
t3_wr_opcode = T3_WR_SEND;
|
2008-07-15 06:48:53 +00:00
|
|
|
err = build_rdma_send(wqe, wr, &t3_wr_flit_cnt);
|
2007-02-13 00:16:18 +00:00
|
|
|
break;
|
|
|
|
|
case IB_WR_RDMA_WRITE:
|
|
|
|
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
|
|
|
t3_wr_opcode = T3_WR_WRITE;
|
2008-07-15 06:48:53 +00:00
|
|
|
err = build_rdma_write(wqe, wr, &t3_wr_flit_cnt);
|
2007-02-13 00:16:18 +00:00
|
|
|
break;
|
|
|
|
|
case IB_WR_RDMA_READ:
|
2008-07-15 06:48:45 +00:00
|
|
|
case IB_WR_RDMA_READ_WITH_INV:
|
2007-02-13 00:16:18 +00:00
|
|
|
t3_wr_opcode = T3_WR_READ;
|
|
|
|
|
t3_wr_flags = 0; /* T3 reads are always signaled */
|
2008-07-15 06:48:53 +00:00
|
|
|
err = build_rdma_read(wqe, wr, &t3_wr_flit_cnt);
|
2007-02-13 00:16:18 +00:00
|
|
|
if (err)
|
|
|
|
|
break;
|
|
|
|
|
sqp->read_len = wqe->read.local_len;
|
|
|
|
|
if (!qhp->wq.oldest_read)
|
|
|
|
|
qhp->wq.oldest_read = sqp;
|
|
|
|
|
break;
|
2015-10-13 16:11:29 +00:00
|
|
|
case IB_WR_REG_MR:
|
|
|
|
|
t3_wr_opcode = T3_WR_FASTREG;
|
|
|
|
|
err = build_memreg(wqe, reg_wr(wr), &t3_wr_flit_cnt,
|
|
|
|
|
&wr_cnt, &qhp->wq);
|
|
|
|
|
break;
|
2008-07-15 06:48:45 +00:00
|
|
|
case IB_WR_LOCAL_INV:
|
|
|
|
|
if (wr->send_flags & IB_SEND_FENCE)
|
|
|
|
|
t3_wr_flags |= T3_LOCAL_FENCE_FLAG;
|
|
|
|
|
t3_wr_opcode = T3_WR_INV_STAG;
|
2008-07-15 06:48:53 +00:00
|
|
|
err = build_inv_stag(wqe, wr, &t3_wr_flit_cnt);
|
2008-07-15 06:48:45 +00:00
|
|
|
break;
|
2007-02-13 00:16:18 +00:00
|
|
|
default:
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s post of type=%d TBD!\n", __func__,
|
|
|
|
|
wr->opcode);
|
2007-02-13 00:16:18 +00:00
|
|
|
err = -EINVAL;
|
|
|
|
|
}
|
2009-12-16 07:39:10 +00:00
|
|
|
if (err)
|
2007-02-13 00:16:18 +00:00
|
|
|
break;
|
|
|
|
|
wqe->send.wrid.id0.hi = qhp->wq.sq_wptr;
|
|
|
|
|
sqp->wr_id = wr->wr_id;
|
|
|
|
|
sqp->opcode = wr2opcode(t3_wr_opcode);
|
|
|
|
|
sqp->sq_wptr = qhp->wq.sq_wptr;
|
|
|
|
|
sqp->complete = 0;
|
|
|
|
|
sqp->signaled = (wr->send_flags & IB_SEND_SIGNALED);
|
|
|
|
|
|
|
|
|
|
build_fw_riwrh((void *) wqe, t3_wr_opcode, t3_wr_flags,
|
|
|
|
|
Q_GENBIT(qhp->wq.wptr, qhp->wq.size_log2),
|
2008-07-15 06:48:45 +00:00
|
|
|
0, t3_wr_flit_cnt,
|
|
|
|
|
(wr_cnt == 1) ? T3_SOPEOP : T3_SOP);
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s cookie 0x%llx wq idx 0x%x swsq idx %ld opcode %d\n",
|
|
|
|
|
__func__, (unsigned long long)wr->wr_id, idx,
|
|
|
|
|
Q_PTR2IDX(qhp->wq.sq_wptr, qhp->wq.sq_size_log2),
|
|
|
|
|
sqp->opcode);
|
2007-02-13 00:16:18 +00:00
|
|
|
wr = wr->next;
|
|
|
|
|
num_wrs--;
|
2008-07-15 06:48:45 +00:00
|
|
|
qhp->wq.wptr += wr_cnt;
|
2007-02-13 00:16:18 +00:00
|
|
|
++(qhp->wq.sq_wptr);
|
|
|
|
|
}
|
|
|
|
|
spin_unlock_irqrestore(&qhp->lock, flag);
|
2010-01-27 17:03:34 +00:00
|
|
|
if (cxio_wq_db_enabled(&qhp->wq))
|
|
|
|
|
ring_doorbell(qhp->wq.doorbell, qhp->wq.qpid);
|
2009-12-16 07:39:10 +00:00
|
|
|
|
|
|
|
|
out:
|
|
|
|
|
if (err)
|
|
|
|
|
*bad_wr = wr;
|
2007-02-13 00:16:18 +00:00
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
2018-07-18 16:25:32 +00:00
|
|
|
int iwch_post_receive(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
|
|
|
|
|
const struct ib_recv_wr **bad_wr)
|
2007-02-13 00:16:18 +00:00
|
|
|
{
|
|
|
|
|
int err = 0;
|
|
|
|
|
struct iwch_qp *qhp;
|
|
|
|
|
u32 idx;
|
|
|
|
|
union t3_wr *wqe;
|
|
|
|
|
u32 num_wrs;
|
|
|
|
|
unsigned long flag;
|
|
|
|
|
|
|
|
|
|
qhp = to_iwch_qp(ibqp);
|
|
|
|
|
spin_lock_irqsave(&qhp->lock, flag);
|
|
|
|
|
if (qhp->attr.state > IWCH_QP_STATE_RTS) {
|
|
|
|
|
spin_unlock_irqrestore(&qhp->lock, flag);
|
2009-12-16 07:39:10 +00:00
|
|
|
err = -EINVAL;
|
|
|
|
|
goto out;
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
num_wrs = Q_FREECNT(qhp->wq.rq_rptr, qhp->wq.rq_wptr,
|
|
|
|
|
qhp->wq.rq_size_log2) - 1;
|
|
|
|
|
if (!wr) {
|
|
|
|
|
spin_unlock_irqrestore(&qhp->lock, flag);
|
2009-12-16 07:39:10 +00:00
|
|
|
err = -ENOMEM;
|
|
|
|
|
goto out;
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
while (wr) {
|
2008-07-15 06:48:53 +00:00
|
|
|
if (wr->num_sge > T3_MAX_SGE) {
|
|
|
|
|
err = -EINVAL;
|
|
|
|
|
break;
|
|
|
|
|
}
|
2007-02-13 00:16:18 +00:00
|
|
|
idx = Q_PTR2IDX(qhp->wq.wptr, qhp->wq.size_log2);
|
|
|
|
|
wqe = (union t3_wr *) (qhp->wq.queue + idx);
|
|
|
|
|
if (num_wrs)
|
2008-07-15 06:48:53 +00:00
|
|
|
if (wr->sg_list[0].lkey)
|
|
|
|
|
err = build_rdma_recv(qhp, wqe, wr);
|
|
|
|
|
else
|
|
|
|
|
err = build_zero_stag_recv(qhp, wqe, wr);
|
2007-02-13 00:16:18 +00:00
|
|
|
else
|
|
|
|
|
err = -ENOMEM;
|
2009-12-16 07:39:10 +00:00
|
|
|
|
|
|
|
|
if (err)
|
2007-02-13 00:16:18 +00:00
|
|
|
break;
|
2009-12-16 07:39:10 +00:00
|
|
|
|
2007-02-13 00:16:18 +00:00
|
|
|
build_fw_riwrh((void *) wqe, T3_WR_RCV, T3_COMPLETION_FLAG,
|
|
|
|
|
Q_GENBIT(qhp->wq.wptr, qhp->wq.size_log2),
|
2008-07-15 06:48:45 +00:00
|
|
|
0, sizeof(struct t3_receive_wr) >> 3, T3_SOPEOP);
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s cookie 0x%llx idx 0x%x rq_wptr 0x%x rw_rptr 0x%x wqe %p\n",
|
|
|
|
|
__func__, (unsigned long long)wr->wr_id,
|
|
|
|
|
idx, qhp->wq.rq_wptr, qhp->wq.rq_rptr, wqe);
|
2007-02-13 00:16:18 +00:00
|
|
|
++(qhp->wq.rq_wptr);
|
|
|
|
|
++(qhp->wq.wptr);
|
|
|
|
|
wr = wr->next;
|
|
|
|
|
num_wrs--;
|
|
|
|
|
}
|
|
|
|
|
spin_unlock_irqrestore(&qhp->lock, flag);
|
2010-01-27 17:03:34 +00:00
|
|
|
if (cxio_wq_db_enabled(&qhp->wq))
|
|
|
|
|
ring_doorbell(qhp->wq.doorbell, qhp->wq.qpid);
|
2009-12-16 07:39:10 +00:00
|
|
|
|
|
|
|
|
out:
|
|
|
|
|
if (err)
|
|
|
|
|
*bad_wr = wr;
|
2007-02-13 00:16:18 +00:00
|
|
|
return err;
|
|
|
|
|
}
|
|
|
|
|
|
2007-04-26 20:21:02 +00:00
|
|
|
static inline void build_term_codes(struct respQ_msg_t *rsp_msg,
|
|
|
|
|
u8 *layer_type, u8 *ecode)
|
2007-02-13 00:16:18 +00:00
|
|
|
{
|
2007-04-26 20:21:02 +00:00
|
|
|
int status = TPT_ERR_INTERNAL_ERR;
|
|
|
|
|
int tagged = 0;
|
|
|
|
|
int opcode = -1;
|
|
|
|
|
int rqtype = 0;
|
|
|
|
|
int send_inv = 0;
|
|
|
|
|
|
|
|
|
|
if (rsp_msg) {
|
|
|
|
|
status = CQE_STATUS(rsp_msg->cqe);
|
|
|
|
|
opcode = CQE_OPCODE(rsp_msg->cqe);
|
|
|
|
|
rqtype = RQ_TYPE(rsp_msg->cqe);
|
|
|
|
|
send_inv = (opcode == T3_SEND_WITH_INV) ||
|
|
|
|
|
(opcode == T3_SEND_WITH_SE_INV);
|
|
|
|
|
tagged = (opcode == T3_RDMA_WRITE) ||
|
|
|
|
|
(rqtype && (opcode == T3_READ_RESP));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
switch (status) {
|
2007-02-13 00:16:18 +00:00
|
|
|
case TPT_ERR_STAG:
|
2007-04-26 20:21:02 +00:00
|
|
|
if (send_inv) {
|
|
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP;
|
|
|
|
|
*ecode = RDMAP_CANT_INV_STAG;
|
|
|
|
|
} else {
|
2007-02-13 00:16:18 +00:00
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT;
|
|
|
|
|
*ecode = RDMAP_INV_STAG;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_PDID:
|
2007-04-26 20:21:02 +00:00
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT;
|
|
|
|
|
if ((opcode == T3_SEND_WITH_INV) ||
|
|
|
|
|
(opcode == T3_SEND_WITH_SE_INV))
|
|
|
|
|
*ecode = RDMAP_CANT_INV_STAG;
|
|
|
|
|
else
|
|
|
|
|
*ecode = RDMAP_STAG_NOT_ASSOC;
|
|
|
|
|
break;
|
2007-02-13 00:16:18 +00:00
|
|
|
case TPT_ERR_QPID:
|
2007-04-26 20:21:02 +00:00
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT;
|
|
|
|
|
*ecode = RDMAP_STAG_NOT_ASSOC;
|
|
|
|
|
break;
|
2007-02-13 00:16:18 +00:00
|
|
|
case TPT_ERR_ACCESS:
|
2007-04-26 20:21:02 +00:00
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT;
|
|
|
|
|
*ecode = RDMAP_ACC_VIOL;
|
2007-02-13 00:16:18 +00:00
|
|
|
break;
|
|
|
|
|
case TPT_ERR_WRAP:
|
|
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT;
|
|
|
|
|
*ecode = RDMAP_TO_WRAP;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_BOUND:
|
2007-04-26 20:21:02 +00:00
|
|
|
if (tagged) {
|
2007-02-13 00:16:18 +00:00
|
|
|
*layer_type = LAYER_DDP|DDP_TAGGED_ERR;
|
|
|
|
|
*ecode = DDPT_BASE_BOUNDS;
|
2007-04-26 20:21:02 +00:00
|
|
|
} else {
|
2007-02-13 00:16:18 +00:00
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT;
|
|
|
|
|
*ecode = RDMAP_BASE_BOUNDS;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_INVALIDATE_SHARED_MR:
|
|
|
|
|
case TPT_ERR_INVALIDATE_MR_WITH_MW_BOUND:
|
|
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP;
|
|
|
|
|
*ecode = RDMAP_CANT_INV_STAG;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_ECC:
|
|
|
|
|
case TPT_ERR_ECC_PSTAG:
|
|
|
|
|
case TPT_ERR_INTERNAL_ERR:
|
|
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_LOCAL_CATA;
|
|
|
|
|
*ecode = 0;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_OUT_OF_RQE:
|
|
|
|
|
*layer_type = LAYER_DDP|DDP_UNTAGGED_ERR;
|
|
|
|
|
*ecode = DDPU_INV_MSN_NOBUF;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_PBL_ADDR_BOUND:
|
|
|
|
|
*layer_type = LAYER_DDP|DDP_TAGGED_ERR;
|
|
|
|
|
*ecode = DDPT_BASE_BOUNDS;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_CRC:
|
|
|
|
|
*layer_type = LAYER_MPA|DDP_LLP;
|
|
|
|
|
*ecode = MPA_CRC_ERR;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_MARKER:
|
|
|
|
|
*layer_type = LAYER_MPA|DDP_LLP;
|
|
|
|
|
*ecode = MPA_MARKER_ERR;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_PDU_LEN_ERR:
|
|
|
|
|
*layer_type = LAYER_DDP|DDP_UNTAGGED_ERR;
|
|
|
|
|
*ecode = DDPU_MSG_TOOBIG;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_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 TPT_ERR_RDMA_VERSION:
|
|
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP;
|
|
|
|
|
*ecode = RDMAP_INV_VERS;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_OPCODE:
|
|
|
|
|
*layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP;
|
|
|
|
|
*ecode = RDMAP_INV_OPCODE;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_DDP_QUEUE_NUM:
|
|
|
|
|
*layer_type = LAYER_DDP|DDP_UNTAGGED_ERR;
|
|
|
|
|
*ecode = DDPU_INV_QN;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_MSN:
|
|
|
|
|
case TPT_ERR_MSN_GAP:
|
|
|
|
|
case TPT_ERR_MSN_RANGE:
|
|
|
|
|
case TPT_ERR_IRD_OVERFLOW:
|
|
|
|
|
*layer_type = LAYER_DDP|DDP_UNTAGGED_ERR;
|
|
|
|
|
*ecode = DDPU_INV_MSN_RANGE;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_ERR_TBIT:
|
|
|
|
|
*layer_type = LAYER_DDP|DDP_LOCAL_CATA;
|
|
|
|
|
*ecode = 0;
|
|
|
|
|
break;
|
|
|
|
|
case TPT_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;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2011-05-13 18:37:18 +00:00
|
|
|
int iwch_post_zb_read(struct iwch_ep *ep)
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
{
|
|
|
|
|
union t3_wr *wqe;
|
|
|
|
|
struct sk_buff *skb;
|
|
|
|
|
u8 flit_cnt = sizeof(struct t3_rdma_read_wr) >> 3;
|
|
|
|
|
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s enter\n", __func__);
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
skb = alloc_skb(40, GFP_KERNEL);
|
|
|
|
|
if (!skb) {
|
2017-02-09 22:23:48 +00:00
|
|
|
pr_err("%s cannot send zb_read!!\n", __func__);
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
return -ENOMEM;
|
|
|
|
|
}
|
networking: convert many more places to skb_put_zero()
There were many places that my previous spatch didn't find,
as pointed out by yuan linyu in various patches.
The following spatch found many more and also removes the
now unnecessary casts:
@@
identifier p, p2;
expression len;
expression skb;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_zero(skb, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_zero(skb, len);
)
... when != p
(
p2 = (t2)p;
-memset(p2, 0, len);
|
-memset(p, 0, len);
)
@@
type t, t2;
identifier p, p2;
expression skb;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_zero(skb, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_zero(skb, sizeof(t));
)
... when != p
(
p2 = (t2)p;
-memset(p2, 0, sizeof(*p));
|
-memset(p, 0, sizeof(*p));
)
@@
expression skb, len;
@@
-memset(skb_put(skb, len), 0, len);
+skb_put_zero(skb, len);
Apply it to the tree (with one manual fixup to keep the
comment in vxlan.c, which spatch removed.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 12:29:19 +00:00
|
|
|
wqe = skb_put_zero(skb, sizeof(struct t3_rdma_read_wr));
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
wqe->read.rdmaop = T3_READ_REQ;
|
|
|
|
|
wqe->read.reserved[0] = 0;
|
|
|
|
|
wqe->read.reserved[1] = 0;
|
|
|
|
|
wqe->read.rem_stag = cpu_to_be32(1);
|
|
|
|
|
wqe->read.rem_to = cpu_to_be64(1);
|
|
|
|
|
wqe->read.local_stag = cpu_to_be32(1);
|
|
|
|
|
wqe->read.local_len = cpu_to_be32(0);
|
|
|
|
|
wqe->read.local_to = cpu_to_be64(1);
|
|
|
|
|
wqe->send.wrh.op_seop_flags = cpu_to_be32(V_FW_RIWR_OP(T3_WR_READ));
|
2011-05-13 18:37:18 +00:00
|
|
|
wqe->send.wrh.gen_tid_len = cpu_to_be32(V_FW_RIWR_TID(ep->hwtid)|
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
V_FW_RIWR_LEN(flit_cnt));
|
|
|
|
|
skb->priority = CPL_PRIORITY_DATA;
|
2011-05-13 18:37:18 +00:00
|
|
|
return iwch_cxgb3_ofld_send(ep->com.qp->rhp->rdev.t3cdev_p, skb);
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
}
|
|
|
|
|
|
2007-02-13 00:16:18 +00:00
|
|
|
/*
|
|
|
|
|
* This posts a TERMINATE with layer=RDMA, type=catastrophic.
|
|
|
|
|
*/
|
|
|
|
|
int iwch_post_terminate(struct iwch_qp *qhp, struct respQ_msg_t *rsp_msg)
|
|
|
|
|
{
|
|
|
|
|
union t3_wr *wqe;
|
|
|
|
|
struct terminate_message *term;
|
|
|
|
|
struct sk_buff *skb;
|
|
|
|
|
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s %d\n", __func__, __LINE__);
|
2007-02-13 00:16:18 +00:00
|
|
|
skb = alloc_skb(40, GFP_ATOMIC);
|
|
|
|
|
if (!skb) {
|
2017-02-09 22:23:48 +00:00
|
|
|
pr_err("%s cannot send TERMINATE!\n", __func__);
|
2007-02-13 00:16:18 +00:00
|
|
|
return -ENOMEM;
|
|
|
|
|
}
|
networking: convert many more places to skb_put_zero()
There were many places that my previous spatch didn't find,
as pointed out by yuan linyu in various patches.
The following spatch found many more and also removes the
now unnecessary casts:
@@
identifier p, p2;
expression len;
expression skb;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_zero(skb, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_zero(skb, len);
)
... when != p
(
p2 = (t2)p;
-memset(p2, 0, len);
|
-memset(p, 0, len);
)
@@
type t, t2;
identifier p, p2;
expression skb;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_zero(skb, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_zero(skb, sizeof(t));
)
... when != p
(
p2 = (t2)p;
-memset(p2, 0, sizeof(*p));
|
-memset(p, 0, sizeof(*p));
)
@@
expression skb, len;
@@
-memset(skb_put(skb, len), 0, len);
+skb_put_zero(skb, len);
Apply it to the tree (with one manual fixup to keep the
comment in vxlan.c, which spatch removed.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16 12:29:19 +00:00
|
|
|
wqe = skb_put_zero(skb, 40);
|
2007-02-13 00:16:18 +00:00
|
|
|
wqe->send.rdmaop = T3_TERMINATE;
|
|
|
|
|
|
|
|
|
|
/* immediate data length */
|
|
|
|
|
wqe->send.plen = htonl(4);
|
|
|
|
|
|
|
|
|
|
/* immediate data starts here. */
|
|
|
|
|
term = (struct terminate_message *)wqe->send.sgl;
|
2007-04-26 20:21:02 +00:00
|
|
|
build_term_codes(rsp_msg, &term->layer_etype, &term->ecode);
|
2007-06-19 14:27:48 +00:00
|
|
|
wqe->send.wrh.op_seop_flags = cpu_to_be32(V_FW_RIWR_OP(T3_WR_SEND) |
|
|
|
|
|
V_FW_RIWR_FLAGS(T3_COMPLETION_FLAG | T3_NOTIFY_FLAG));
|
|
|
|
|
wqe->send.wrh.gen_tid_len = cpu_to_be32(V_FW_RIWR_TID(qhp->ep->hwtid));
|
2007-02-13 00:16:18 +00:00
|
|
|
skb->priority = CPL_PRIORITY_DATA;
|
2009-03-30 15:37:56 +00:00
|
|
|
return iwch_cxgb3_ofld_send(qhp->rhp->rdev.t3cdev_p, skb);
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Assumes qhp lock is held.
|
|
|
|
|
*/
|
2010-10-21 12:37:06 +00:00
|
|
|
static void __flush_qp(struct iwch_qp *qhp, struct iwch_cq *rchp,
|
2012-03-07 22:48:46 +00:00
|
|
|
struct iwch_cq *schp)
|
2017-10-11 17:48:50 +00:00
|
|
|
__releases(&qhp->lock)
|
|
|
|
|
__acquires(&qhp->lock)
|
2007-02-13 00:16:18 +00:00
|
|
|
{
|
|
|
|
|
int count;
|
2008-05-02 16:17:41 +00:00
|
|
|
int flushed;
|
2007-02-13 00:16:18 +00:00
|
|
|
|
2017-10-11 17:48:50 +00:00
|
|
|
lockdep_assert_held(&qhp->lock);
|
2007-02-13 00:16:18 +00:00
|
|
|
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s qhp %p rchp %p schp %p\n", __func__, qhp, rchp, schp);
|
2007-02-13 00:16:18 +00:00
|
|
|
/* take a ref on the qhp since we must release the lock */
|
|
|
|
|
atomic_inc(&qhp->refcnt);
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_unlock(&qhp->lock);
|
2007-02-13 00:16:18 +00:00
|
|
|
|
2010-06-11 10:16:59 +00:00
|
|
|
/* locking hierarchy: cq lock first, then qp lock. */
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_lock(&rchp->lock);
|
2007-02-13 00:16:18 +00:00
|
|
|
spin_lock(&qhp->lock);
|
|
|
|
|
cxio_flush_hw_cq(&rchp->cq);
|
|
|
|
|
cxio_count_rcqes(&rchp->cq, &qhp->wq, &count);
|
2008-05-02 16:17:41 +00:00
|
|
|
flushed = cxio_flush_rq(&qhp->wq, &rchp->cq, count);
|
2007-02-13 00:16:18 +00:00
|
|
|
spin_unlock(&qhp->lock);
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_unlock(&rchp->lock);
|
2011-10-24 15:50:22 +00:00
|
|
|
if (flushed) {
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_lock(&rchp->comp_handler_lock);
|
2008-05-02 16:17:41 +00:00
|
|
|
(*rchp->ibcq.comp_handler)(&rchp->ibcq, rchp->ibcq.cq_context);
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_unlock(&rchp->comp_handler_lock);
|
2011-10-24 15:50:22 +00:00
|
|
|
}
|
2007-02-13 00:16:18 +00:00
|
|
|
|
2010-06-11 10:16:59 +00:00
|
|
|
/* locking hierarchy: cq lock first, then qp lock. */
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_lock(&schp->lock);
|
2007-02-13 00:16:18 +00:00
|
|
|
spin_lock(&qhp->lock);
|
|
|
|
|
cxio_flush_hw_cq(&schp->cq);
|
|
|
|
|
cxio_count_scqes(&schp->cq, &qhp->wq, &count);
|
2008-05-02 16:17:41 +00:00
|
|
|
flushed = cxio_flush_sq(&qhp->wq, &schp->cq, count);
|
2007-02-13 00:16:18 +00:00
|
|
|
spin_unlock(&qhp->lock);
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_unlock(&schp->lock);
|
2011-10-24 15:50:22 +00:00
|
|
|
if (flushed) {
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_lock(&schp->comp_handler_lock);
|
2008-05-02 16:17:41 +00:00
|
|
|
(*schp->ibcq.comp_handler)(&schp->ibcq, schp->ibcq.cq_context);
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_unlock(&schp->comp_handler_lock);
|
2011-10-24 15:50:22 +00:00
|
|
|
}
|
2007-02-13 00:16:18 +00:00
|
|
|
|
|
|
|
|
/* deref */
|
|
|
|
|
if (atomic_dec_and_test(&qhp->refcnt))
|
|
|
|
|
wake_up(&qhp->wait);
|
|
|
|
|
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_lock(&qhp->lock);
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
|
2012-03-07 22:48:46 +00:00
|
|
|
static void flush_qp(struct iwch_qp *qhp)
|
2007-02-13 00:16:18 +00:00
|
|
|
{
|
2010-10-21 12:37:06 +00:00
|
|
|
struct iwch_cq *rchp, *schp;
|
|
|
|
|
|
|
|
|
|
rchp = get_chp(qhp->rhp, qhp->attr.rcq);
|
|
|
|
|
schp = get_chp(qhp->rhp, qhp->attr.scq);
|
|
|
|
|
|
|
|
|
|
if (qhp->ibqp.uobject) {
|
2007-02-13 00:16:18 +00:00
|
|
|
cxio_set_wq_in_error(&qhp->wq);
|
2010-10-21 12:37:06 +00:00
|
|
|
cxio_set_cq_in_error(&rchp->cq);
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_lock(&rchp->comp_handler_lock);
|
2010-10-21 12:37:06 +00:00
|
|
|
(*rchp->ibcq.comp_handler)(&rchp->ibcq, rchp->ibcq.cq_context);
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_unlock(&rchp->comp_handler_lock);
|
2010-10-21 12:37:06 +00:00
|
|
|
if (schp != rchp) {
|
|
|
|
|
cxio_set_cq_in_error(&schp->cq);
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_lock(&schp->comp_handler_lock);
|
2010-10-21 12:37:06 +00:00
|
|
|
(*schp->ibcq.comp_handler)(&schp->ibcq,
|
|
|
|
|
schp->ibcq.cq_context);
|
2012-03-07 22:48:46 +00:00
|
|
|
spin_unlock(&schp->comp_handler_lock);
|
2010-10-21 12:37:06 +00:00
|
|
|
}
|
|
|
|
|
return;
|
|
|
|
|
}
|
2012-03-07 22:48:46 +00:00
|
|
|
__flush_qp(qhp, rchp, schp);
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
* Return count of RECV WRs posted
|
2007-02-13 00:16:18 +00:00
|
|
|
*/
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
u16 iwch_rqes_posted(struct iwch_qp *qhp)
|
2007-02-13 00:16:18 +00:00
|
|
|
{
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
union t3_wr *wqe = qhp->wq.queue;
|
|
|
|
|
u16 count = 0;
|
2013-06-18 07:27:38 +00:00
|
|
|
|
|
|
|
|
while (count < USHRT_MAX && fw_riwrh_opcode((struct fw_riwrh *)wqe) == T3_WR_RCV) {
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
count++;
|
|
|
|
|
wqe++;
|
|
|
|
|
}
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s qhp %p count %u\n", __func__, qhp, count);
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
return count;
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int rdma_init(struct iwch_dev *rhp, struct iwch_qp *qhp,
|
|
|
|
|
enum iwch_qp_attr_mask mask,
|
|
|
|
|
struct iwch_qp_attributes *attrs)
|
|
|
|
|
{
|
|
|
|
|
struct t3_rdma_init_attr init_attr;
|
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
|
|
init_attr.tid = qhp->ep->hwtid;
|
|
|
|
|
init_attr.qpid = qhp->wq.qpid;
|
|
|
|
|
init_attr.pdid = qhp->attr.pd;
|
|
|
|
|
init_attr.scqid = qhp->attr.scq;
|
|
|
|
|
init_attr.rcqid = qhp->attr.rcq;
|
|
|
|
|
init_attr.rq_addr = qhp->wq.rq_addr;
|
|
|
|
|
init_attr.rq_size = 1 << qhp->wq.rq_size_log2;
|
|
|
|
|
init_attr.mpaattrs = uP_RI_MPA_IETF_ENABLE |
|
|
|
|
|
qhp->attr.mpa_attr.recv_marker_enabled |
|
|
|
|
|
(qhp->attr.mpa_attr.xmit_marker_enabled << 1) |
|
|
|
|
|
(qhp->attr.mpa_attr.crc_enabled << 2);
|
|
|
|
|
|
2008-08-04 18:04:42 +00:00
|
|
|
init_attr.qpcaps = uP_RI_QP_RDMA_READ_ENABLE |
|
|
|
|
|
uP_RI_QP_RDMA_WRITE_ENABLE |
|
|
|
|
|
uP_RI_QP_BIND_ENABLE;
|
|
|
|
|
if (!qhp->ibqp.uobject)
|
|
|
|
|
init_attr.qpcaps |= uP_RI_QP_STAG0_ENABLE |
|
|
|
|
|
uP_RI_QP_FAST_REGISTER_ENABLE;
|
|
|
|
|
|
2007-02-13 00:16:18 +00:00
|
|
|
init_attr.tcp_emss = qhp->ep->emss;
|
|
|
|
|
init_attr.ord = qhp->attr.max_ord;
|
|
|
|
|
init_attr.ird = qhp->attr.max_ird;
|
|
|
|
|
init_attr.qp_dma_addr = qhp->wq.dma_addr;
|
|
|
|
|
init_attr.qp_dma_size = (1UL << qhp->wq.size_log2);
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
init_attr.rqe_count = iwch_rqes_posted(qhp);
|
|
|
|
|
init_attr.flags = qhp->attr.mpa_attr.initiator ? MPA_INITIATOR : 0;
|
2009-09-06 03:22:37 +00:00
|
|
|
init_attr.chan = qhp->ep->l2t->smt_idx;
|
RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message. This class of application connection setup is
called peer-to-peer. Typically once the connection is setup, _both_
sides want to send data.
This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.
Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup. The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.
In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent. This will be done by standardizing a few bits of the
private data in order to negotiate all this. However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.
Design:
- Add a module option, peer2peer, to enable this mode.
- New firmware support for peer-to-peer mode:
- a new bit in the rdma_init WR to tell it to do peer-2-peer
and what form of RTR message to send or expect.
- process _all_ preposted recvs before moving the connection
into rdma mode.
- passive side: defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the RTR is received.
- active side: expect and process the 0B read WR on offload TX
queue. Defer completing the rdma_init WR until all
pre-posted recvs are processed. Suspend SQ processing until
the 0B read WR is processed from the offload TX queue.
- If peer2peer is set, driver posts 0B read request on offload TX
queue just after posting the rdma_init WR to the offload TX queue.
- Add CQ poll logic to ignore unsolicitied read responses.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 20:46:52 +00:00
|
|
|
if (peer2peer) {
|
|
|
|
|
init_attr.rtr_type = RTR_READ;
|
|
|
|
|
if (init_attr.ord == 0 && qhp->attr.mpa_attr.initiator)
|
|
|
|
|
init_attr.ord = 1;
|
|
|
|
|
if (init_attr.ird == 0 && !qhp->attr.mpa_attr.initiator)
|
|
|
|
|
init_attr.ird = 1;
|
|
|
|
|
} else
|
|
|
|
|
init_attr.rtr_type = 0;
|
2007-05-14 18:27:27 +00:00
|
|
|
init_attr.irs = qhp->ep->rcv_seq;
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s init_attr.rq_addr 0x%x init_attr.rq_size = %d flags 0x%x qpcaps 0x%x\n",
|
|
|
|
|
__func__,
|
|
|
|
|
init_attr.rq_addr, init_attr.rq_size,
|
|
|
|
|
init_attr.flags, init_attr.qpcaps);
|
2007-02-13 00:16:18 +00:00
|
|
|
ret = cxio_rdma_init(&rhp->rdev, &init_attr);
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s ret %d\n", __func__, ret);
|
2007-02-13 00:16:18 +00:00
|
|
|
return ret;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int iwch_modify_qp(struct iwch_dev *rhp, struct iwch_qp *qhp,
|
|
|
|
|
enum iwch_qp_attr_mask mask,
|
|
|
|
|
struct iwch_qp_attributes *attrs,
|
|
|
|
|
int internal)
|
|
|
|
|
{
|
|
|
|
|
int ret = 0;
|
|
|
|
|
struct iwch_qp_attributes newattr = qhp->attr;
|
|
|
|
|
unsigned long flag;
|
|
|
|
|
int disconnect = 0;
|
|
|
|
|
int terminate = 0;
|
|
|
|
|
int abort = 0;
|
|
|
|
|
int free = 0;
|
|
|
|
|
struct iwch_ep *ep = NULL;
|
|
|
|
|
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s qhp %p qpid 0x%x ep %p state %d -> %d\n", __func__,
|
|
|
|
|
qhp, qhp->wq.qpid, qhp->ep, qhp->attr.state,
|
|
|
|
|
(mask & IWCH_QP_ATTR_NEXT_STATE) ? attrs->next_state : -1);
|
2007-02-13 00:16:18 +00:00
|
|
|
|
|
|
|
|
spin_lock_irqsave(&qhp->lock, flag);
|
|
|
|
|
|
|
|
|
|
/* Process attr changes if in IDLE */
|
|
|
|
|
if (mask & IWCH_QP_ATTR_VALID_MODIFY) {
|
|
|
|
|
if (qhp->attr.state != IWCH_QP_STATE_IDLE) {
|
|
|
|
|
ret = -EIO;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
if (mask & IWCH_QP_ATTR_ENABLE_RDMA_READ)
|
|
|
|
|
newattr.enable_rdma_read = attrs->enable_rdma_read;
|
|
|
|
|
if (mask & IWCH_QP_ATTR_ENABLE_RDMA_WRITE)
|
|
|
|
|
newattr.enable_rdma_write = attrs->enable_rdma_write;
|
|
|
|
|
if (mask & IWCH_QP_ATTR_ENABLE_RDMA_BIND)
|
|
|
|
|
newattr.enable_bind = attrs->enable_bind;
|
|
|
|
|
if (mask & IWCH_QP_ATTR_MAX_ORD) {
|
|
|
|
|
if (attrs->max_ord >
|
|
|
|
|
rhp->attr.max_rdma_read_qp_depth) {
|
|
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
newattr.max_ord = attrs->max_ord;
|
|
|
|
|
}
|
|
|
|
|
if (mask & IWCH_QP_ATTR_MAX_IRD) {
|
|
|
|
|
if (attrs->max_ird >
|
|
|
|
|
rhp->attr.max_rdma_reads_per_qp) {
|
|
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
newattr.max_ird = attrs->max_ird;
|
|
|
|
|
}
|
|
|
|
|
qhp->attr = newattr;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!(mask & IWCH_QP_ATTR_NEXT_STATE))
|
|
|
|
|
goto out;
|
|
|
|
|
if (qhp->attr.state == attrs->next_state)
|
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
|
|
switch (qhp->attr.state) {
|
|
|
|
|
case IWCH_QP_STATE_IDLE:
|
|
|
|
|
switch (attrs->next_state) {
|
|
|
|
|
case IWCH_QP_STATE_RTS:
|
|
|
|
|
if (!(mask & IWCH_QP_ATTR_LLP_STREAM_HANDLE)) {
|
|
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
if (!(mask & IWCH_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;
|
|
|
|
|
qhp->attr.state = IWCH_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.
|
|
|
|
|
*/
|
|
|
|
|
get_ep(&qhp->ep->com);
|
|
|
|
|
spin_unlock_irqrestore(&qhp->lock, flag);
|
|
|
|
|
ret = rdma_init(rhp, qhp, mask, attrs);
|
|
|
|
|
spin_lock_irqsave(&qhp->lock, flag);
|
|
|
|
|
if (ret)
|
|
|
|
|
goto err;
|
|
|
|
|
break;
|
|
|
|
|
case IWCH_QP_STATE_ERROR:
|
|
|
|
|
qhp->attr.state = IWCH_QP_STATE_ERROR;
|
2012-03-07 22:48:46 +00:00
|
|
|
flush_qp(qhp);
|
2007-02-13 00:16:18 +00:00
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case IWCH_QP_STATE_RTS:
|
|
|
|
|
switch (attrs->next_state) {
|
|
|
|
|
case IWCH_QP_STATE_CLOSING:
|
2016-11-14 16:29:48 +00:00
|
|
|
BUG_ON(kref_read(&qhp->ep->com.kref) < 2);
|
2007-02-13 00:16:18 +00:00
|
|
|
qhp->attr.state = IWCH_QP_STATE_CLOSING;
|
|
|
|
|
if (!internal) {
|
|
|
|
|
abort=0;
|
|
|
|
|
disconnect = 1;
|
|
|
|
|
ep = qhp->ep;
|
2008-04-29 20:46:51 +00:00
|
|
|
get_ep(&ep->com);
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case IWCH_QP_STATE_TERMINATE:
|
|
|
|
|
qhp->attr.state = IWCH_QP_STATE_TERMINATE;
|
2008-01-21 20:42:09 +00:00
|
|
|
if (qhp->ibqp.uobject)
|
2007-02-15 14:49:02 +00:00
|
|
|
cxio_set_wq_in_error(&qhp->wq);
|
2007-02-13 00:16:18 +00:00
|
|
|
if (!internal)
|
|
|
|
|
terminate = 1;
|
|
|
|
|
break;
|
|
|
|
|
case IWCH_QP_STATE_ERROR:
|
|
|
|
|
qhp->attr.state = IWCH_QP_STATE_ERROR;
|
|
|
|
|
if (!internal) {
|
|
|
|
|
abort=1;
|
|
|
|
|
disconnect = 1;
|
|
|
|
|
ep = qhp->ep;
|
2008-04-29 20:46:51 +00:00
|
|
|
get_ep(&ep->com);
|
2007-02-13 00:16:18 +00:00
|
|
|
}
|
|
|
|
|
goto err;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case IWCH_QP_STATE_CLOSING:
|
|
|
|
|
if (!internal) {
|
|
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
switch (attrs->next_state) {
|
|
|
|
|
case IWCH_QP_STATE_IDLE:
|
2012-03-07 22:48:46 +00:00
|
|
|
flush_qp(qhp);
|
2007-02-13 00:16:18 +00:00
|
|
|
qhp->attr.state = IWCH_QP_STATE_IDLE;
|
|
|
|
|
qhp->attr.llp_stream_handle = NULL;
|
|
|
|
|
put_ep(&qhp->ep->com);
|
|
|
|
|
qhp->ep = NULL;
|
|
|
|
|
wake_up(&qhp->wait);
|
|
|
|
|
break;
|
|
|
|
|
case IWCH_QP_STATE_ERROR:
|
|
|
|
|
goto err;
|
|
|
|
|
default:
|
|
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto err;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case IWCH_QP_STATE_ERROR:
|
|
|
|
|
if (attrs->next_state != IWCH_QP_STATE_IDLE) {
|
|
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!Q_EMPTY(qhp->wq.sq_rptr, qhp->wq.sq_wptr) ||
|
|
|
|
|
!Q_EMPTY(qhp->wq.rq_rptr, qhp->wq.rq_wptr)) {
|
|
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
qhp->attr.state = IWCH_QP_STATE_IDLE;
|
|
|
|
|
break;
|
|
|
|
|
case IWCH_QP_STATE_TERMINATE:
|
|
|
|
|
if (!internal) {
|
|
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto out;
|
|
|
|
|
}
|
|
|
|
|
goto err;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
2017-02-09 22:23:48 +00:00
|
|
|
pr_err("%s in a bad state %d\n", __func__, qhp->attr.state);
|
2007-02-13 00:16:18 +00:00
|
|
|
ret = -EINVAL;
|
|
|
|
|
goto err;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
goto out;
|
|
|
|
|
err:
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s disassociating ep %p qpid 0x%x\n", __func__, qhp->ep,
|
|
|
|
|
qhp->wq.qpid);
|
2007-02-13 00:16:18 +00:00
|
|
|
|
|
|
|
|
/* disassociate the LLP connection */
|
|
|
|
|
qhp->attr.llp_stream_handle = NULL;
|
|
|
|
|
ep = qhp->ep;
|
|
|
|
|
qhp->ep = NULL;
|
|
|
|
|
qhp->attr.state = IWCH_QP_STATE_ERROR;
|
|
|
|
|
free=1;
|
|
|
|
|
wake_up(&qhp->wait);
|
|
|
|
|
BUG_ON(!ep);
|
2012-03-07 22:48:46 +00:00
|
|
|
flush_qp(qhp);
|
2007-02-13 00:16:18 +00:00
|
|
|
out:
|
|
|
|
|
spin_unlock_irqrestore(&qhp->lock, flag);
|
|
|
|
|
|
|
|
|
|
if (terminate)
|
|
|
|
|
iwch_post_terminate(qhp, NULL);
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* 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).
|
|
|
|
|
*/
|
2008-04-29 20:46:51 +00:00
|
|
|
if (disconnect) {
|
2007-02-13 00:16:18 +00:00
|
|
|
iwch_ep_disconnect(ep, abort, GFP_KERNEL);
|
2008-04-29 20:46:51 +00:00
|
|
|
put_ep(&ep->com);
|
|
|
|
|
}
|
2007-02-13 00:16:18 +00:00
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* If free is 1, then we've disassociated the EP from the QP
|
|
|
|
|
* and we need to dereference the EP.
|
|
|
|
|
*/
|
|
|
|
|
if (free)
|
|
|
|
|
put_ep(&ep->com);
|
|
|
|
|
|
2017-02-09 22:23:49 +00:00
|
|
|
pr_debug("%s exit state %d\n", __func__, qhp->attr.state);
|
2007-02-13 00:16:18 +00:00
|
|
|
return ret;
|
|
|
|
|
}
|