License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 22:07:57 +08:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2017-01-09 23:55:16 +08:00
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/*
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* Shared Memory Communications over RDMA (SMC-R) and RoCE
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*
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* CLC (connection layer control) handshake over initial TCP socket to
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* prepare for RDMA traffic
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*
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* Copyright IBM Corp. 2016
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*
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* Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com>
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*/
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#ifndef _SMC_CLC_H
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#define _SMC_CLC_H
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#include <rdma/ib_verbs.h>
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2021-09-14 16:35:05 +08:00
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#include <linux/smc.h>
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2017-01-09 23:55:16 +08:00
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#include "smc.h"
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2021-09-14 16:35:05 +08:00
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#include "smc_netlink.h"
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2017-01-09 23:55:16 +08:00
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#define SMC_CLC_PROPOSAL 0x01
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#define SMC_CLC_ACCEPT 0x02
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#define SMC_CLC_CONFIRM 0x03
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#define SMC_CLC_DECLINE 0x04
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2018-06-29 01:05:09 +08:00
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#define SMC_TYPE_R 0 /* SMC-R only */
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#define SMC_TYPE_D 1 /* SMC-D only */
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2020-07-08 23:05:15 +08:00
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#define SMC_TYPE_N 2 /* neither SMC-R nor SMC-D */
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2018-06-29 01:05:09 +08:00
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#define SMC_TYPE_B 3 /* SMC-R and SMC-D */
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2017-01-09 23:55:16 +08:00
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#define CLC_WAIT_TIME (6 * HZ) /* max. wait time on clcsock */
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2018-11-22 17:26:39 +08:00
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#define CLC_WAIT_TIME_SHORT HZ /* short wait time on clcsock */
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2017-01-09 23:55:16 +08:00
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#define SMC_CLC_DECL_MEM 0x01010000 /* insufficient memory resources */
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2018-07-25 22:35:32 +08:00
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#define SMC_CLC_DECL_TIMEOUT_CL 0x02010000 /* timeout w4 QP confirm link */
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#define SMC_CLC_DECL_TIMEOUT_AL 0x02020000 /* timeout w4 QP add link */
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2017-01-09 23:55:16 +08:00
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#define SMC_CLC_DECL_CNFERR 0x03000000 /* configuration error */
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2018-07-25 22:35:32 +08:00
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#define SMC_CLC_DECL_PEERNOSMC 0x03010000 /* peer did not indicate SMC */
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#define SMC_CLC_DECL_IPSEC 0x03020000 /* IPsec usage */
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2019-04-12 18:57:29 +08:00
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#define SMC_CLC_DECL_NOSMCDEV 0x03030000 /* no SMC device found (R or D) */
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#define SMC_CLC_DECL_NOSMCDDEV 0x03030001 /* no SMC-D device found */
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#define SMC_CLC_DECL_NOSMCRDEV 0x03030002 /* no SMC-R device found */
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2020-11-01 02:19:38 +08:00
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#define SMC_CLC_DECL_NOISM2SUPP 0x03030003 /* hardware has no ISMv2 support */
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#define SMC_CLC_DECL_NOV2EXT 0x03030004 /* peer sent no clc v2 extension */
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#define SMC_CLC_DECL_NOV2DEXT 0x03030005 /* peer sent no clc SMC-Dv2 ext. */
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#define SMC_CLC_DECL_NOSEID 0x03030006 /* peer sent no SEID */
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#define SMC_CLC_DECL_NOSMCD2DEV 0x03030007 /* no SMC-Dv2 device found */
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2021-10-16 17:37:46 +08:00
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#define SMC_CLC_DECL_NOUEID 0x03030008 /* peer sent no UEID */
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2018-07-25 22:35:32 +08:00
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#define SMC_CLC_DECL_MODEUNSUPP 0x03040000 /* smc modes do not match (R or D)*/
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#define SMC_CLC_DECL_RMBE_EC 0x03050000 /* peer has eyecatcher in RMBE */
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#define SMC_CLC_DECL_OPTUNSUPP 0x03060000 /* fastopen sockopt not supported */
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2019-04-12 18:57:25 +08:00
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#define SMC_CLC_DECL_DIFFPREFIX 0x03070000 /* IP prefix / subnet mismatch */
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2019-04-12 18:57:27 +08:00
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#define SMC_CLC_DECL_GETVLANERR 0x03080000 /* err to get vlan id of ip device*/
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2019-04-12 18:57:30 +08:00
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#define SMC_CLC_DECL_ISMVLANERR 0x03090000 /* err to reg vlan id on ism dev */
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2020-04-29 23:10:41 +08:00
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#define SMC_CLC_DECL_NOACTLINK 0x030a0000 /* no active smc-r link in lgr */
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2020-04-30 21:55:43 +08:00
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#define SMC_CLC_DECL_NOSRVLINK 0x030b0000 /* SMC-R link from srv not found */
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2020-07-08 23:05:15 +08:00
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#define SMC_CLC_DECL_VERSMISMAT 0x030c0000 /* SMC version mismatch */
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2020-07-27 02:34:28 +08:00
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#define SMC_CLC_DECL_MAX_DMB 0x030d0000 /* SMC-D DMB limit exceeded */
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2021-10-16 17:37:45 +08:00
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#define SMC_CLC_DECL_NOROUTE 0x030e0000 /* SMC-Rv2 conn. no route to peer */
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#define SMC_CLC_DECL_NOINDIRECT 0x030f0000 /* SMC-Rv2 conn. indirect mismatch*/
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2017-01-09 23:55:16 +08:00
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#define SMC_CLC_DECL_SYNCERR 0x04000000 /* synchronization error */
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2018-07-25 22:35:32 +08:00
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#define SMC_CLC_DECL_PEERDECL 0x05000000 /* peer declined during handshake */
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2019-04-12 18:57:24 +08:00
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#define SMC_CLC_DECL_INTERR 0x09990000 /* internal error */
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#define SMC_CLC_DECL_ERR_RTOK 0x09990001 /* rtoken handling failed */
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#define SMC_CLC_DECL_ERR_RDYLNK 0x09990002 /* ib ready link failed */
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net/smc: Allow virtually contiguous sndbufs or RMBs for SMC-R
On long-running enterprise production servers, high-order contiguous
memory pages are usually very rare and in most cases we can only get
fragmented pages.
When replacing TCP with SMC-R in such production scenarios, attempting
to allocate high-order physically contiguous sndbufs and RMBs may result
in frequent memory compaction, which will cause unexpected hung issue
and further stability risks.
So this patch is aimed to allow SMC-R link group to use virtually
contiguous sndbufs and RMBs to avoid potential issues mentioned above.
Whether to use physically or virtually contiguous buffers can be set
by sysctl smcr_buf_type.
Note that using virtually contiguous buffers will bring an acceptable
performance regression, which can be mainly divided into two parts:
1) regression in data path, which is brought by additional address
translation of sndbuf by RNIC in Tx. But in general, translating
address through MTT is fast.
Taking 256KB sndbuf and RMB as an example, the comparisons in qperf
latency and bandwidth test with physically and virtually contiguous
buffers are as follows:
- client:
smc_run taskset -c <cpu> qperf <server> -oo msg_size:1:64K:*2\
-t 5 -vu tcp_{bw|lat}
- server:
smc_run taskset -c <cpu> qperf
[latency]
msgsize tcp smcr smcr-use-virt-buf
1 11.17 us 7.56 us 7.51 us (-0.67%)
2 10.65 us 7.74 us 7.56 us (-2.31%)
4 11.11 us 7.52 us 7.59 us ( 0.84%)
8 10.83 us 7.55 us 7.51 us (-0.48%)
16 11.21 us 7.46 us 7.51 us ( 0.71%)
32 10.65 us 7.53 us 7.58 us ( 0.61%)
64 10.95 us 7.74 us 7.80 us ( 0.76%)
128 11.14 us 7.83 us 7.87 us ( 0.47%)
256 10.97 us 7.94 us 7.92 us (-0.28%)
512 11.23 us 7.94 us 8.20 us ( 3.25%)
1024 11.60 us 8.12 us 8.20 us ( 0.96%)
2048 14.04 us 8.30 us 8.51 us ( 2.49%)
4096 16.88 us 9.13 us 9.07 us (-0.64%)
8192 22.50 us 10.56 us 11.22 us ( 6.26%)
16384 28.99 us 12.88 us 13.83 us ( 7.37%)
32768 40.13 us 16.76 us 16.95 us ( 1.16%)
65536 68.70 us 24.68 us 24.85 us ( 0.68%)
[bandwidth]
msgsize tcp smcr smcr-use-virt-buf
1 1.65 MB/s 1.59 MB/s 1.53 MB/s (-3.88%)
2 3.32 MB/s 3.17 MB/s 3.08 MB/s (-2.67%)
4 6.66 MB/s 6.33 MB/s 6.09 MB/s (-3.85%)
8 13.67 MB/s 13.45 MB/s 11.97 MB/s (-10.99%)
16 25.36 MB/s 27.15 MB/s 24.16 MB/s (-11.01%)
32 48.22 MB/s 54.24 MB/s 49.41 MB/s (-8.89%)
64 106.79 MB/s 107.32 MB/s 99.05 MB/s (-7.71%)
128 210.21 MB/s 202.46 MB/s 201.02 MB/s (-0.71%)
256 400.81 MB/s 416.81 MB/s 393.52 MB/s (-5.59%)
512 746.49 MB/s 834.12 MB/s 809.99 MB/s (-2.89%)
1024 1292.33 MB/s 1641.96 MB/s 1571.82 MB/s (-4.27%)
2048 2007.64 MB/s 2760.44 MB/s 2717.68 MB/s (-1.55%)
4096 2665.17 MB/s 4157.44 MB/s 4070.76 MB/s (-2.09%)
8192 3159.72 MB/s 4361.57 MB/s 4270.65 MB/s (-2.08%)
16384 4186.70 MB/s 4574.13 MB/s 4501.17 MB/s (-1.60%)
32768 4093.21 MB/s 4487.42 MB/s 4322.43 MB/s (-3.68%)
65536 4057.14 MB/s 4735.61 MB/s 4555.17 MB/s (-3.81%)
2) regression in buffer initialization and destruction path, which is
brought by additional MR operations of sndbufs. But thanks to link
group buffer reuse mechanism, the impact of this kind of regression
decreases as times of buffer reuse increases.
Taking 256KB sndbuf and RMB as an example, latency of some key SMC-R
buffer-related function obtained by bpftrace are as follows:
Function Phys-bufs Virt-bufs
smcr_new_buf_create() 67154 ns 79164 ns
smc_ib_buf_map_sg() 525 ns 928 ns
smc_ib_get_memory_region() 162294 ns 161191 ns
smc_wr_reg_send() 9957 ns 9635 ns
smc_ib_put_memory_region() 203548 ns 198374 ns
smc_ib_buf_unmap_sg() 508 ns 1158 ns
------------
Test environment notes:
1. Above tests run on 2 VMs within the same Host.
2. The NIC is ConnectX-4Lx, using SRIOV and passing through 2 VFs to
the each VM respectively.
3. VMs' vCPUs are binded to different physical CPUs, and the binded
physical CPUs are isolated by `isolcpus=xxx` cmdline.
4. NICs' queue number are set to 1.
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-14 17:44:04 +08:00
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#define SMC_CLC_DECL_ERR_REGBUF 0x09990003 /* reg rdma bufs failed */
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2017-01-09 23:55:16 +08:00
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2020-09-26 18:44:20 +08:00
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#define SMC_FIRST_CONTACT_MASK 0b10 /* first contact bit within typev2 */
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2017-01-09 23:55:16 +08:00
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struct smc_clc_msg_hdr { /* header1 of clc messages */
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u8 eyecatcher[4]; /* eye catcher */
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u8 type; /* proposal / accept / confirm / decline */
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__be16 length;
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#if defined(__BIG_ENDIAN_BITFIELD)
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u8 version : 4,
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2020-09-26 18:44:20 +08:00
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typev2 : 2,
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typev1 : 2;
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2017-01-09 23:55:16 +08:00
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#elif defined(__LITTLE_ENDIAN_BITFIELD)
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2020-09-26 18:44:20 +08:00
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u8 typev1 : 2,
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typev2 : 2,
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2017-01-09 23:55:16 +08:00
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version : 4;
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#endif
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} __packed; /* format defined in RFC7609 */
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struct smc_clc_msg_trail { /* trailer of clc messages */
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u8 eyecatcher[4];
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};
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struct smc_clc_msg_local { /* header2 of clc messages */
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u8 id_for_peer[SMC_SYSTEMID_LEN]; /* unique system id */
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u8 gid[16]; /* gid of ib_device port */
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u8 mac[6]; /* mac of ib_device port */
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};
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2018-03-16 22:06:40 +08:00
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/* Struct would be 4 byte aligned, but it is used in an array that is sent
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* to peers and must conform to RFC7609, hence we need to use packed here.
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*/
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2017-12-07 20:38:49 +08:00
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struct smc_clc_ipv6_prefix {
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2018-03-16 22:06:40 +08:00
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struct in6_addr prefix;
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2017-12-07 20:38:49 +08:00
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u8 prefix_len;
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2018-03-16 22:06:40 +08:00
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} __packed; /* format defined in RFC7609 */
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2017-12-07 20:38:49 +08:00
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2020-09-26 18:44:28 +08:00
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#if defined(__BIG_ENDIAN_BITFIELD)
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struct smc_clc_v2_flag {
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u8 release : 4,
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rsvd : 3,
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seid : 1;
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};
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#elif defined(__LITTLE_ENDIAN_BITFIELD)
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struct smc_clc_v2_flag {
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u8 seid : 1,
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rsvd : 3,
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release : 4;
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};
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#endif
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struct smc_clnt_opts_area_hdr {
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u8 eid_cnt; /* number of user defined EIDs */
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u8 ism_gid_cnt; /* number of ISMv2 GIDs */
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u8 reserved1;
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struct smc_clc_v2_flag flag;
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u8 reserved2[2];
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__be16 smcd_v2_ext_offset; /* SMC-Dv2 Extension Offset */
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};
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struct smc_clc_smcd_gid_chid {
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__be64 gid; /* ISM GID */
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__be16 chid; /* ISMv2 CHID */
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} __packed; /* format defined in
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* IBM Shared Memory Communications Version 2
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* (https://www.ibm.com/support/pages/node/6326337)
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*/
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struct smc_clc_v2_extension {
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struct smc_clnt_opts_area_hdr hdr;
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u8 roce[16]; /* RoCEv2 GID */
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u8 reserved[16];
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2020-10-27 14:33:56 +08:00
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u8 user_eids[][SMC_MAX_EID_LEN];
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2020-09-26 18:44:28 +08:00
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};
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2017-12-07 20:38:49 +08:00
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struct smc_clc_msg_proposal_prefix { /* prefix part of clc proposal message*/
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2017-01-09 23:55:16 +08:00
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__be32 outgoing_subnet; /* subnet mask */
|
|
|
|
|
u8 prefix_len; /* number of significant bits in mask */
|
|
|
|
|
u8 reserved[2];
|
|
|
|
|
u8 ipv6_prefixes_cnt; /* number of IPv6 prefixes in prefix array */
|
|
|
|
|
} __aligned(4);
|
|
|
|
|
|
2018-06-29 01:05:09 +08:00
|
|
|
struct smc_clc_msg_smcd { /* SMC-D GID information */
|
2020-09-26 18:44:28 +08:00
|
|
|
struct smc_clc_smcd_gid_chid ism; /* ISM native GID+CHID of requestor */
|
|
|
|
|
__be16 v2_ext_offset; /* SMC Version 2 Extension Offset */
|
|
|
|
|
u8 reserved[28];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
struct smc_clc_smcd_v2_extension {
|
|
|
|
|
u8 system_eid[SMC_MAX_EID_LEN];
|
|
|
|
|
u8 reserved[16];
|
2020-10-27 14:33:56 +08:00
|
|
|
struct smc_clc_smcd_gid_chid gidchid[];
|
2018-06-29 01:05:09 +08:00
|
|
|
};
|
|
|
|
|
|
2017-12-07 20:38:49 +08:00
|
|
|
struct smc_clc_msg_proposal { /* clc proposal message sent by Linux */
|
|
|
|
|
struct smc_clc_msg_hdr hdr;
|
|
|
|
|
struct smc_clc_msg_local lcl;
|
|
|
|
|
__be16 iparea_offset; /* offset to IP address information area */
|
|
|
|
|
} __aligned(4);
|
|
|
|
|
|
2020-09-26 18:44:28 +08:00
|
|
|
#define SMC_CLC_MAX_V6_PREFIX 8
|
2021-09-14 16:35:05 +08:00
|
|
|
#define SMC_CLC_MAX_UEID 8
|
2020-09-26 18:44:28 +08:00
|
|
|
|
2020-09-11 00:48:22 +08:00
|
|
|
struct smc_clc_msg_proposal_area {
|
|
|
|
|
struct smc_clc_msg_proposal pclc_base;
|
|
|
|
|
struct smc_clc_msg_smcd pclc_smcd;
|
|
|
|
|
struct smc_clc_msg_proposal_prefix pclc_prfx;
|
|
|
|
|
struct smc_clc_ipv6_prefix pclc_prfx_ipv6[SMC_CLC_MAX_V6_PREFIX];
|
2020-09-26 18:44:28 +08:00
|
|
|
struct smc_clc_v2_extension pclc_v2_ext;
|
2021-09-14 16:35:05 +08:00
|
|
|
u8 user_eids[SMC_CLC_MAX_UEID][SMC_MAX_EID_LEN];
|
2020-09-26 18:44:28 +08:00
|
|
|
struct smc_clc_smcd_v2_extension pclc_smcd_v2_ext;
|
|
|
|
|
struct smc_clc_smcd_gid_chid pclc_gidchids[SMC_MAX_ISM_DEVS];
|
2020-09-11 00:48:22 +08:00
|
|
|
struct smc_clc_msg_trail pclc_trl;
|
|
|
|
|
};
|
2017-12-07 20:38:49 +08:00
|
|
|
|
2020-09-11 00:48:23 +08:00
|
|
|
struct smcr_clc_msg_accept_confirm { /* SMCR accept/confirm */
|
|
|
|
|
struct smc_clc_msg_local lcl;
|
|
|
|
|
u8 qpn[3]; /* QP number */
|
|
|
|
|
__be32 rmb_rkey; /* RMB rkey */
|
|
|
|
|
u8 rmbe_idx; /* Index of RMBE in RMB */
|
|
|
|
|
__be32 rmbe_alert_token; /* unique connection id */
|
|
|
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
|
|
|
|
u8 rmbe_size : 4, /* buf size (compressed) */
|
|
|
|
|
qp_mtu : 4; /* QP mtu */
|
2017-01-09 23:55:16 +08:00
|
|
|
#elif defined(__LITTLE_ENDIAN_BITFIELD)
|
2020-09-11 00:48:23 +08:00
|
|
|
u8 qp_mtu : 4,
|
|
|
|
|
rmbe_size : 4;
|
2017-01-09 23:55:16 +08:00
|
|
|
#endif
|
2020-09-11 00:48:23 +08:00
|
|
|
u8 reserved;
|
|
|
|
|
__be64 rmb_dma_addr; /* RMB virtual address */
|
|
|
|
|
u8 reserved2;
|
|
|
|
|
u8 psn[3]; /* packet sequence number */
|
|
|
|
|
} __packed;
|
|
|
|
|
|
2020-09-26 18:44:30 +08:00
|
|
|
struct smcd_clc_msg_accept_confirm_common { /* SMCD accept/confirm */
|
2020-09-11 00:48:23 +08:00
|
|
|
u64 gid; /* Sender GID */
|
|
|
|
|
u64 token; /* DMB token */
|
|
|
|
|
u8 dmbe_idx; /* DMBE index */
|
2018-06-29 01:05:09 +08:00
|
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
2020-09-11 00:48:23 +08:00
|
|
|
u8 dmbe_size : 4, /* buf size (compressed) */
|
|
|
|
|
reserved3 : 4;
|
2018-06-29 01:05:09 +08:00
|
|
|
#elif defined(__LITTLE_ENDIAN_BITFIELD)
|
2020-09-11 00:48:23 +08:00
|
|
|
u8 reserved3 : 4,
|
|
|
|
|
dmbe_size : 4;
|
2018-06-29 01:05:09 +08:00
|
|
|
#endif
|
2020-09-11 00:48:23 +08:00
|
|
|
u16 reserved4;
|
2020-09-26 18:44:22 +08:00
|
|
|
__be32 linkid; /* Link identifier */
|
2020-09-11 00:48:23 +08:00
|
|
|
} __packed;
|
|
|
|
|
|
2020-09-26 18:44:31 +08:00
|
|
|
#define SMC_CLC_OS_ZOS 1
|
|
|
|
|
#define SMC_CLC_OS_LINUX 2
|
|
|
|
|
#define SMC_CLC_OS_AIX 3
|
|
|
|
|
|
|
|
|
|
struct smc_clc_first_contact_ext {
|
|
|
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
2021-10-16 17:37:45 +08:00
|
|
|
u8 v2_direct : 1,
|
|
|
|
|
reserved : 7;
|
2020-09-26 18:44:31 +08:00
|
|
|
u8 os_type : 4,
|
|
|
|
|
release : 4;
|
|
|
|
|
#elif defined(__LITTLE_ENDIAN_BITFIELD)
|
2021-10-16 17:37:45 +08:00
|
|
|
u8 reserved : 7,
|
|
|
|
|
v2_direct : 1;
|
2020-09-26 18:44:31 +08:00
|
|
|
u8 release : 4,
|
|
|
|
|
os_type : 4;
|
|
|
|
|
#endif
|
|
|
|
|
u8 reserved2[2];
|
|
|
|
|
u8 hostname[SMC_MAX_HOSTNAME_LEN];
|
|
|
|
|
};
|
|
|
|
|
|
2021-10-16 17:37:45 +08:00
|
|
|
struct smc_clc_fce_gid_ext {
|
|
|
|
|
u8 reserved[16];
|
|
|
|
|
u8 gid_cnt;
|
|
|
|
|
u8 reserved2[3];
|
|
|
|
|
u8 gid[][SMC_GID_SIZE];
|
|
|
|
|
};
|
|
|
|
|
|
2020-09-11 00:48:23 +08:00
|
|
|
struct smc_clc_msg_accept_confirm { /* clc accept / confirm message */
|
|
|
|
|
struct smc_clc_msg_hdr hdr;
|
|
|
|
|
union {
|
|
|
|
|
struct smcr_clc_msg_accept_confirm r0; /* SMC-R */
|
2020-09-26 18:44:30 +08:00
|
|
|
struct { /* SMC-D */
|
|
|
|
|
struct smcd_clc_msg_accept_confirm_common d0;
|
|
|
|
|
u32 reserved5[3];
|
|
|
|
|
};
|
2018-06-29 01:05:09 +08:00
|
|
|
};
|
2017-01-09 23:55:16 +08:00
|
|
|
} __packed; /* format defined in RFC7609 */
|
|
|
|
|
|
2020-09-26 18:44:30 +08:00
|
|
|
struct smc_clc_msg_accept_confirm_v2 { /* clc accept / confirm message */
|
|
|
|
|
struct smc_clc_msg_hdr hdr;
|
|
|
|
|
union {
|
2021-10-16 17:37:45 +08:00
|
|
|
struct { /* SMC-R */
|
|
|
|
|
struct smcr_clc_msg_accept_confirm r0;
|
|
|
|
|
u8 eid[SMC_MAX_EID_LEN];
|
|
|
|
|
u8 reserved6[8];
|
|
|
|
|
} r1;
|
2020-09-26 18:44:30 +08:00
|
|
|
struct { /* SMC-D */
|
|
|
|
|
struct smcd_clc_msg_accept_confirm_common d0;
|
|
|
|
|
__be16 chid;
|
|
|
|
|
u8 eid[SMC_MAX_EID_LEN];
|
|
|
|
|
u8 reserved5[8];
|
2021-10-16 17:37:45 +08:00
|
|
|
} d1;
|
2020-09-26 18:44:30 +08:00
|
|
|
};
|
|
|
|
|
};
|
|
|
|
|
|
2017-01-09 23:55:16 +08:00
|
|
|
struct smc_clc_msg_decline { /* clc decline message */
|
|
|
|
|
struct smc_clc_msg_hdr hdr;
|
|
|
|
|
u8 id_for_peer[SMC_SYSTEMID_LEN]; /* sender peer_id */
|
|
|
|
|
__be32 peer_diagnosis; /* diagnosis information */
|
2020-09-26 18:44:32 +08:00
|
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
|
|
|
|
u8 os_type : 4,
|
|
|
|
|
reserved : 4;
|
|
|
|
|
#elif defined(__LITTLE_ENDIAN_BITFIELD)
|
|
|
|
|
u8 reserved : 4,
|
|
|
|
|
os_type : 4;
|
|
|
|
|
#endif
|
|
|
|
|
u8 reserved2[3];
|
|
|
|
|
struct smc_clc_msg_trail trl; /* eye catcher "SMCD" or "SMCR" EBCDIC */
|
2017-01-09 23:55:16 +08:00
|
|
|
} __aligned(4);
|
|
|
|
|
|
2021-10-16 17:37:47 +08:00
|
|
|
#define SMC_DECL_DIAG_COUNT_V2 4 /* no. of additional peer diagnosis codes */
|
|
|
|
|
|
|
|
|
|
struct smc_clc_msg_decline_v2 { /* clc decline message */
|
|
|
|
|
struct smc_clc_msg_hdr hdr;
|
|
|
|
|
u8 id_for_peer[SMC_SYSTEMID_LEN]; /* sender peer_id */
|
|
|
|
|
__be32 peer_diagnosis; /* diagnosis information */
|
|
|
|
|
#if defined(__BIG_ENDIAN_BITFIELD)
|
|
|
|
|
u8 os_type : 4,
|
|
|
|
|
reserved : 4;
|
|
|
|
|
#elif defined(__LITTLE_ENDIAN_BITFIELD)
|
|
|
|
|
u8 reserved : 4,
|
|
|
|
|
os_type : 4;
|
|
|
|
|
#endif
|
|
|
|
|
u8 reserved2[3];
|
|
|
|
|
__be32 peer_diagnosis_v2[SMC_DECL_DIAG_COUNT_V2];
|
|
|
|
|
struct smc_clc_msg_trail trl; /* eye catcher "SMCD" or "SMCR" EBCDIC */
|
|
|
|
|
} __aligned(4);
|
|
|
|
|
|
2017-12-07 20:38:49 +08:00
|
|
|
/* determine start of the prefix area within the proposal message */
|
|
|
|
|
static inline struct smc_clc_msg_proposal_prefix *
|
|
|
|
|
smc_clc_proposal_get_prefix(struct smc_clc_msg_proposal *pclc)
|
|
|
|
|
{
|
|
|
|
|
return (struct smc_clc_msg_proposal_prefix *)
|
|
|
|
|
((u8 *)pclc + sizeof(*pclc) + ntohs(pclc->iparea_offset));
|
|
|
|
|
}
|
|
|
|
|
|
2020-09-26 18:44:21 +08:00
|
|
|
static inline bool smcr_indicated(int smc_type)
|
|
|
|
|
{
|
|
|
|
|
return smc_type == SMC_TYPE_R || smc_type == SMC_TYPE_B;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline bool smcd_indicated(int smc_type)
|
|
|
|
|
{
|
|
|
|
|
return smc_type == SMC_TYPE_D || smc_type == SMC_TYPE_B;
|
|
|
|
|
}
|
|
|
|
|
|
2021-10-16 17:37:44 +08:00
|
|
|
static inline u8 smc_indicated_type(int is_smcd, int is_smcr)
|
|
|
|
|
{
|
|
|
|
|
if (is_smcd && is_smcr)
|
|
|
|
|
return SMC_TYPE_B;
|
|
|
|
|
if (is_smcd)
|
|
|
|
|
return SMC_TYPE_D;
|
|
|
|
|
if (is_smcr)
|
|
|
|
|
return SMC_TYPE_R;
|
|
|
|
|
return SMC_TYPE_N;
|
|
|
|
|
}
|
|
|
|
|
|
2018-06-29 01:05:09 +08:00
|
|
|
/* get SMC-D info from proposal message */
|
|
|
|
|
static inline struct smc_clc_msg_smcd *
|
|
|
|
|
smc_get_clc_msg_smcd(struct smc_clc_msg_proposal *prop)
|
|
|
|
|
{
|
2020-09-26 18:44:28 +08:00
|
|
|
if (smcd_indicated(prop->hdr.typev1) &&
|
2020-09-26 18:44:21 +08:00
|
|
|
ntohs(prop->iparea_offset) != sizeof(struct smc_clc_msg_smcd))
|
2018-06-29 01:05:09 +08:00
|
|
|
return NULL;
|
|
|
|
|
|
|
|
|
|
return (struct smc_clc_msg_smcd *)(prop + 1);
|
|
|
|
|
}
|
|
|
|
|
|
2020-09-26 18:44:28 +08:00
|
|
|
static inline struct smc_clc_v2_extension *
|
|
|
|
|
smc_get_clc_v2_ext(struct smc_clc_msg_proposal *prop)
|
|
|
|
|
{
|
|
|
|
|
struct smc_clc_msg_smcd *prop_smcd = smc_get_clc_msg_smcd(prop);
|
|
|
|
|
|
|
|
|
|
if (!prop_smcd || !ntohs(prop_smcd->v2_ext_offset))
|
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
|
|
return (struct smc_clc_v2_extension *)
|
|
|
|
|
((u8 *)prop_smcd +
|
|
|
|
|
offsetof(struct smc_clc_msg_smcd, v2_ext_offset) +
|
|
|
|
|
sizeof(prop_smcd->v2_ext_offset) +
|
|
|
|
|
ntohs(prop_smcd->v2_ext_offset));
|
|
|
|
|
}
|
|
|
|
|
|
2020-09-26 18:44:29 +08:00
|
|
|
static inline struct smc_clc_smcd_v2_extension *
|
|
|
|
|
smc_get_clc_smcd_v2_ext(struct smc_clc_v2_extension *prop_v2ext)
|
|
|
|
|
{
|
|
|
|
|
if (!prop_v2ext)
|
|
|
|
|
return NULL;
|
|
|
|
|
if (!ntohs(prop_v2ext->hdr.smcd_v2_ext_offset))
|
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
|
|
return (struct smc_clc_smcd_v2_extension *)
|
|
|
|
|
((u8 *)prop_v2ext +
|
|
|
|
|
offsetof(struct smc_clc_v2_extension, hdr) +
|
|
|
|
|
offsetof(struct smc_clnt_opts_area_hdr, smcd_v2_ext_offset) +
|
|
|
|
|
sizeof(prop_v2ext->hdr.smcd_v2_ext_offset) +
|
|
|
|
|
ntohs(prop_v2ext->hdr.smcd_v2_ext_offset));
|
|
|
|
|
}
|
|
|
|
|
|
2018-06-29 01:05:09 +08:00
|
|
|
struct smcd_dev;
|
2019-04-12 18:57:26 +08:00
|
|
|
struct smc_init_info;
|
2018-06-29 01:05:09 +08:00
|
|
|
|
2018-03-16 22:06:39 +08:00
|
|
|
int smc_clc_prfx_match(struct socket *clcsock,
|
|
|
|
|
struct smc_clc_msg_proposal_prefix *prop);
|
2017-01-09 23:55:16 +08:00
|
|
|
int smc_clc_wait_msg(struct smc_sock *smc, void *buf, int buflen,
|
2018-11-22 17:26:39 +08:00
|
|
|
u8 expected_type, unsigned long timeout);
|
2020-09-26 18:44:32 +08:00
|
|
|
int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info, u8 version);
|
2020-09-26 18:44:27 +08:00
|
|
|
int smc_clc_send_proposal(struct smc_sock *smc, struct smc_init_info *ini);
|
2020-09-26 18:44:30 +08:00
|
|
|
int smc_clc_send_confirm(struct smc_sock *smc, bool clnt_first_contact,
|
2021-10-16 17:37:45 +08:00
|
|
|
u8 version, u8 *eid, struct smc_init_info *ini);
|
2020-09-26 18:44:30 +08:00
|
|
|
int smc_clc_send_accept(struct smc_sock *smc, bool srv_first_contact,
|
2021-09-14 16:35:05 +08:00
|
|
|
u8 version, u8 *negotiated_eid);
|
2020-09-26 18:44:31 +08:00
|
|
|
void smc_clc_init(void) __init;
|
2021-09-14 16:35:05 +08:00
|
|
|
void smc_clc_exit(void);
|
2020-12-02 03:20:44 +08:00
|
|
|
void smc_clc_get_hostname(u8 **host);
|
2021-09-14 16:35:05 +08:00
|
|
|
bool smc_clc_match_eid(u8 *negotiated_eid,
|
|
|
|
|
struct smc_clc_v2_extension *smc_v2_ext,
|
|
|
|
|
u8 *peer_eid, u8 *local_eid);
|
2021-10-16 17:37:44 +08:00
|
|
|
int smc_clc_ueid_count(void);
|
2021-09-14 16:35:05 +08:00
|
|
|
int smc_nl_dump_ueid(struct sk_buff *skb, struct netlink_callback *cb);
|
|
|
|
|
int smc_nl_add_ueid(struct sk_buff *skb, struct genl_info *info);
|
|
|
|
|
int smc_nl_remove_ueid(struct sk_buff *skb, struct genl_info *info);
|
|
|
|
|
int smc_nl_flush_ueid(struct sk_buff *skb, struct genl_info *info);
|
2021-09-14 16:35:07 +08:00
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int smc_nl_dump_seid(struct sk_buff *skb, struct netlink_callback *cb);
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int smc_nl_enable_seid(struct sk_buff *skb, struct genl_info *info);
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int smc_nl_disable_seid(struct sk_buff *skb, struct genl_info *info);
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2017-01-09 23:55:16 +08:00
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#endif
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