| Message ID | 20190219100903.15408-14-bmt@zurich.ibm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Jason Gunthorpe |
| Headers | show |
| Series | SIW: Request for Comments | expand |
Hi Bernard,
I love your patch! Yet something to improve:
[auto build test ERROR on rdma/for-next]
[also build test ERROR on next-20190221]
[cannot apply to v5.0-rc4]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Bernard-Metzler/SIW-Request-for-Comments/20190221-220427
base: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=8.2.0 make.cross ARCH=m68k
All error/warnings (new ones prefixed by >>):
In file included from include/asm-generic/percpu.h:7,
from ./arch/m68k/include/generated/asm/percpu.h:1,
from include/linux/percpu.h:13,
from include/linux/netdevice.h:36,
from drivers/infiniband/sw/siw/siw_main.c:42:
include/linux/percpu-defs.h:91:33: warning: '__pcpu_unique_use_cnt' initialized and declared 'extern'
extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:114:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
drivers/infiniband/sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
>> include/linux/percpu-defs.h:92:26: error: redefinition of '__pcpu_unique_use_cnt'
__PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:114:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
drivers/infiniband/sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:91:33: note: previous definition of '__pcpu_unique_use_cnt' was here
extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:114:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
drivers/infiniband/sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
drivers/infiniband/sw/siw/siw_main.c:249:33: warning: 'use_cnt' initialized and declared 'extern'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~
include/linux/percpu-defs.h:93:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name; \
^~~~
drivers/infiniband/sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
>> drivers/infiniband/sw/siw/siw_main.c:249:33: error: redefinition of 'use_cnt'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~
include/linux/percpu-defs.h:94:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
__PCPU_ATTRS(sec) __weak __typeof__(type) name
^~~~
drivers/infiniband/sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
drivers/infiniband/sw/siw/siw_main.c:249:33: note: previous definition of 'use_cnt' was here
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~
include/linux/percpu-defs.h:93:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name; \
^~~~
drivers/infiniband/sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
>> drivers/infiniband/sw/siw/siw_main.c:416:3: error: 'const struct ib_device_ops' has no member named 'dealloc_driver'; did you mean 'dealloc_fmr'?
.dealloc_driver = siw_device_cleanup,
^~~~~~~~~~~~~~
dealloc_fmr
>> drivers/infiniband/sw/siw/siw_main.c:416:20: error: initialization of 'void (*)(struct ib_qp *)' from incompatible pointer type 'void (*)(struct ib_device *)' [-Werror=incompatible-pointer-types]
.dealloc_driver = siw_device_cleanup,
^~~~~~~~~~~~~~~~~~
drivers/infiniband/sw/siw/siw_main.c:416:20: note: (near initialization for 'siw_device_ops.drain_sq')
drivers/infiniband/sw/siw/siw_main.c: In function 'siw_device_create':
>> drivers/infiniband/sw/siw/siw_main.c:514:7: error: implicit declaration of function 'ib_device_set_netdev'; did you mean 'ib_device_try_get'? [-Werror=implicit-function-declaration]
rv = ib_device_set_netdev(base_dev, netdev, 1);
^~~~~~~~~~~~~~~~~~~~
ib_device_try_get
drivers/infiniband/sw/siw/siw_main.c: In function 'siw_netdev_event':
>> drivers/infiniband/sw/siw/siw_main.c:615:13: error: implicit declaration of function 'ib_device_get_by_netdev'; did you mean 'ib_device_try_get'? [-Werror=implicit-function-declaration]
base_dev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_SIW);
^~~~~~~~~~~~~~~~~~~~~~~
ib_device_try_get
>> drivers/infiniband/sw/siw/siw_main.c:615:11: warning: assignment to 'struct ib_device *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
base_dev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_SIW);
^
>> drivers/infiniband/sw/siw/siw_main.c:647:3: error: implicit declaration of function 'ib_unregister_device_queued'; did you mean 'ib_unregister_device'? [-Werror=implicit-function-declaration]
ib_unregister_device_queued(&sdev->base_dev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
ib_unregister_device
drivers/infiniband/sw/siw/siw_main.c: In function 'siw_newlink':
drivers/infiniband/sw/siw/siw_main.c:679:11: warning: assignment to 'struct ib_device *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
base_dev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_SIW);
^
drivers/infiniband/sw/siw/siw_main.c: At top level:
>> drivers/infiniband/sw/siw/siw_main.c:711:15: error: variable 'siw_link_ops' has initializer but incomplete type
static struct rdma_link_ops siw_link_ops = {
^~~~~~~~~~~~~
>> drivers/infiniband/sw/siw/siw_main.c:712:3: error: 'struct rdma_link_ops' has no member named 'type'
.type = "siw",
^~~~
drivers/infiniband/sw/siw/siw_main.c:712:10: warning: excess elements in struct initializer
.type = "siw",
^~~~~
drivers/infiniband/sw/siw/siw_main.c:712:10: note: (near initialization for 'siw_link_ops')
>> drivers/infiniband/sw/siw/siw_main.c:713:3: error: 'struct rdma_link_ops' has no member named 'newlink'
.newlink = siw_newlink,
^~~~~~~
drivers/infiniband/sw/siw/siw_main.c:713:13: warning: excess elements in struct initializer
.newlink = siw_newlink,
^~~~~~~~~~~
drivers/infiniband/sw/siw/siw_main.c:713:13: note: (near initialization for 'siw_link_ops')
drivers/infiniband/sw/siw/siw_main.c: In function 'siw_init_module':
>> drivers/infiniband/sw/siw/siw_main.c:763:2: error: implicit declaration of function 'rdma_link_register'; did you mean 'rdma_nl_register'? [-Werror=implicit-function-declaration]
rdma_link_register(&siw_link_ops);
^~~~~~~~~~~~~~~~~~
rdma_nl_register
drivers/infiniband/sw/siw/siw_main.c: In function 'siw_exit_module':
>> drivers/infiniband/sw/siw/siw_main.c:797:2: error: implicit declaration of function 'rdma_link_unregister'; did you mean 'rdma_nl_unregister'? [-Werror=implicit-function-declaration]
rdma_link_unregister(&siw_link_ops);
^~~~~~~~~~~~~~~~~~~~
rdma_nl_unregister
>> drivers/infiniband/sw/siw/siw_main.c:798:2: error: implicit declaration of function 'ib_unregister_driver'; did you mean 'ib_unregister_device'? [-Werror=implicit-function-declaration]
ib_unregister_driver(RDMA_DRIVER_SIW);
^~~~~~~~~~~~~~~~~~~~
ib_unregister_device
drivers/infiniband/sw/siw/siw_main.c: At top level:
>> drivers/infiniband/sw/siw/siw_main.c:813:24: error: expected declaration specifiers or '...' before string constant
MODULE_ALIAS_RDMA_LINK("siw");
^~~~~
>> drivers/infiniband/sw/siw/siw_main.c:711:29: error: storage size of 'siw_link_ops' isn't known
static struct rdma_link_ops siw_link_ops = {
^~~~~~~~~~~~
cc1: some warnings being treated as errors
--
drivers/infiniband/sw/siw/siw_verbs.c: In function 'siw_query_device':
>> drivers/infiniband/sw/siw/siw_verbs.c:238:8: error: 'IB_DEVICE_ALLOW_USER_UNREG' undeclared (first use in this function); did you mean 'IB_DEVICE_SG_GAPS_REG'?
| IB_DEVICE_ALLOW_USER_UNREG;
^~~~~~~~~~~~~~~~~~~~~~~~~~
IB_DEVICE_SG_GAPS_REG
drivers/infiniband/sw/siw/siw_verbs.c:238:8: note: each undeclared identifier is reported only once for each function it appears in
drivers/infiniband/sw/siw/siw_verbs.c: In function 'siw_copy_inline_sgl':
drivers/infiniband/sw/siw/siw_verbs.c:767:22: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
sqe->sge[0].laddr = (u64)kbuf;
^
drivers/infiniband/sw/siw/siw_verbs.c: In function 'siw_post_send':
drivers/infiniband/sw/siw/siw_verbs.c:935:19: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
sqe->base_mr = (uint64_t)reg_wr(wr)->mr;
^
In file included from include/linux/printk.h:331,
from include/linux/kernel.h:14,
from include/linux/list.h:9,
from include/linux/rculist.h:10,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from include/linux/uaccess.h:5,
from drivers/infiniband/sw/siw/siw_verbs.c:42:
drivers/infiniband/sw/siw/siw_verbs.c: In function 'siw_map_mr_sg':
drivers/infiniband/sw/siw/siw_verbs.c:1550:37: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
OBJ_ID(&mr->mem), i, pble->size, (void *)pble->addr,
^
include/linux/dynamic_debug.h:136:9: note: in definition of macro 'dynamic_dev_dbg'
##__VA_ARGS__); \
^~~~~~~~~~~
drivers/infiniband/sw/siw/siw_debug.h:47:2: note: in expansion of macro 'dev_dbg'
dev_dbg(&(ddev)->base_dev.dev, "cpu%2d %s: " fmt, smp_processor_id(),\
^~~~~~~
drivers/infiniband/sw/siw/siw_verbs.c:1548:3: note: in expansion of macro 'siw_dbg'
siw_dbg(mr->mem.hdr.sdev,
^~~~~~~
--
In file included from include/asm-generic/percpu.h:7,
from ./arch/m68k/include/generated/asm/percpu.h:1,
from include/linux/percpu.h:13,
from include/linux/netdevice.h:36,
from drivers/infiniband//sw/siw/siw_main.c:42:
include/linux/percpu-defs.h:91:33: warning: '__pcpu_unique_use_cnt' initialized and declared 'extern'
extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:114:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
drivers/infiniband//sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
>> include/linux/percpu-defs.h:92:26: error: redefinition of '__pcpu_unique_use_cnt'
__PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:114:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
drivers/infiniband//sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:91:33: note: previous definition of '__pcpu_unique_use_cnt' was here
extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
^~~~~~~~~~~~~~
include/linux/percpu-defs.h:114:2: note: in expansion of macro 'DEFINE_PER_CPU_SECTION'
DEFINE_PER_CPU_SECTION(type, name, "")
^~~~~~~~~~~~~~~~~~~~~~
drivers/infiniband//sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
drivers/infiniband//sw/siw/siw_main.c:249:33: warning: 'use_cnt' initialized and declared 'extern'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~
include/linux/percpu-defs.h:93:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name; \
^~~~
drivers/infiniband//sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
drivers/infiniband//sw/siw/siw_main.c:249:33: error: redefinition of 'use_cnt'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~
include/linux/percpu-defs.h:94:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
__PCPU_ATTRS(sec) __weak __typeof__(type) name
^~~~
drivers/infiniband//sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
drivers/infiniband//sw/siw/siw_main.c:249:33: note: previous definition of 'use_cnt' was here
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~
include/linux/percpu-defs.h:93:44: note: in definition of macro 'DEFINE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name; \
^~~~
drivers/infiniband//sw/siw/siw_main.c:249:8: note: in expansion of macro 'DEFINE_PER_CPU'
static DEFINE_PER_CPU(atomic_t, use_cnt = ATOMIC_INIT(0));
^~~~~~~~~~~~~~
drivers/infiniband//sw/siw/siw_main.c:416:3: error: 'const struct ib_device_ops' has no member named 'dealloc_driver'; did you mean 'dealloc_fmr'?
.dealloc_driver = siw_device_cleanup,
^~~~~~~~~~~~~~
dealloc_fmr
drivers/infiniband//sw/siw/siw_main.c:416:20: error: initialization of 'void (*)(struct ib_qp *)' from incompatible pointer type 'void (*)(struct ib_device *)' [-Werror=incompatible-pointer-types]
.dealloc_driver = siw_device_cleanup,
^~~~~~~~~~~~~~~~~~
drivers/infiniband//sw/siw/siw_main.c:416:20: note: (near initialization for 'siw_device_ops.drain_sq')
drivers/infiniband//sw/siw/siw_main.c: In function 'siw_device_create':
drivers/infiniband//sw/siw/siw_main.c:514:7: error: implicit declaration of function 'ib_device_set_netdev'; did you mean 'ib_device_try_get'? [-Werror=implicit-function-declaration]
rv = ib_device_set_netdev(base_dev, netdev, 1);
^~~~~~~~~~~~~~~~~~~~
ib_device_try_get
drivers/infiniband//sw/siw/siw_main.c: In function 'siw_netdev_event':
drivers/infiniband//sw/siw/siw_main.c:615:13: error: implicit declaration of function 'ib_device_get_by_netdev'; did you mean 'ib_device_try_get'? [-Werror=implicit-function-declaration]
base_dev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_SIW);
^~~~~~~~~~~~~~~~~~~~~~~
ib_device_try_get
drivers/infiniband//sw/siw/siw_main.c:615:11: warning: assignment to 'struct ib_device *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
base_dev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_SIW);
^
drivers/infiniband//sw/siw/siw_main.c:647:3: error: implicit declaration of function 'ib_unregister_device_queued'; did you mean 'ib_unregister_device'? [-Werror=implicit-function-declaration]
ib_unregister_device_queued(&sdev->base_dev);
^~~~~~~~~~~~~~~~~~~~~~~~~~~
ib_unregister_device
drivers/infiniband//sw/siw/siw_main.c: In function 'siw_newlink':
drivers/infiniband//sw/siw/siw_main.c:679:11: warning: assignment to 'struct ib_device *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
base_dev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_SIW);
^
drivers/infiniband//sw/siw/siw_main.c: At top level:
drivers/infiniband//sw/siw/siw_main.c:711:15: error: variable 'siw_link_ops' has initializer but incomplete type
static struct rdma_link_ops siw_link_ops = {
^~~~~~~~~~~~~
drivers/infiniband//sw/siw/siw_main.c:712:3: error: 'struct rdma_link_ops' has no member named 'type'
.type = "siw",
^~~~
drivers/infiniband//sw/siw/siw_main.c:712:10: warning: excess elements in struct initializer
.type = "siw",
^~~~~
drivers/infiniband//sw/siw/siw_main.c:712:10: note: (near initialization for 'siw_link_ops')
drivers/infiniband//sw/siw/siw_main.c:713:3: error: 'struct rdma_link_ops' has no member named 'newlink'
.newlink = siw_newlink,
^~~~~~~
drivers/infiniband//sw/siw/siw_main.c:713:13: warning: excess elements in struct initializer
.newlink = siw_newlink,
^~~~~~~~~~~
drivers/infiniband//sw/siw/siw_main.c:713:13: note: (near initialization for 'siw_link_ops')
drivers/infiniband//sw/siw/siw_main.c: In function 'siw_init_module':
drivers/infiniband//sw/siw/siw_main.c:763:2: error: implicit declaration of function 'rdma_link_register'; did you mean 'rdma_nl_register'? [-Werror=implicit-function-declaration]
rdma_link_register(&siw_link_ops);
^~~~~~~~~~~~~~~~~~
rdma_nl_register
drivers/infiniband//sw/siw/siw_main.c: In function 'siw_exit_module':
drivers/infiniband//sw/siw/siw_main.c:797:2: error: implicit declaration of function 'rdma_link_unregister'; did you mean 'rdma_nl_unregister'? [-Werror=implicit-function-declaration]
rdma_link_unregister(&siw_link_ops);
^~~~~~~~~~~~~~~~~~~~
vim +/__pcpu_unique_use_cnt +92 include/linux/percpu-defs.h
62fde541 Tejun Heo 2014-06-17 37
5028eaa9 David Howells 2009-04-21 38 /*
5028eaa9 David Howells 2009-04-21 39 * Base implementations of per-CPU variable declarations and definitions, where
5028eaa9 David Howells 2009-04-21 40 * the section in which the variable is to be placed is provided by the
7c756e6e Tejun Heo 2009-06-24 41 * 'sec' argument. This may be used to affect the parameters governing the
5028eaa9 David Howells 2009-04-21 42 * variable's storage.
5028eaa9 David Howells 2009-04-21 43 *
5028eaa9 David Howells 2009-04-21 44 * NOTE! The sections for the DECLARE and for the DEFINE must match, lest
5028eaa9 David Howells 2009-04-21 45 * linkage errors occur due the compiler generating the wrong code to access
5028eaa9 David Howells 2009-04-21 46 * that section.
5028eaa9 David Howells 2009-04-21 47 */
7c756e6e Tejun Heo 2009-06-24 48 #define __PCPU_ATTRS(sec) \
e0fdb0e0 Rusty Russell 2009-10-29 49 __percpu __attribute__((section(PER_CPU_BASE_SECTION sec))) \
7c756e6e Tejun Heo 2009-06-24 50 PER_CPU_ATTRIBUTES
7c756e6e Tejun Heo 2009-06-24 51
7c756e6e Tejun Heo 2009-06-24 52 #define __PCPU_DUMMY_ATTRS \
7c756e6e Tejun Heo 2009-06-24 53 __attribute__((section(".discard"), unused))
7c756e6e Tejun Heo 2009-06-24 54
7c756e6e Tejun Heo 2009-06-24 55 /*
7c756e6e Tejun Heo 2009-06-24 56 * s390 and alpha modules require percpu variables to be defined as
7c756e6e Tejun Heo 2009-06-24 57 * weak to force the compiler to generate GOT based external
7c756e6e Tejun Heo 2009-06-24 58 * references for them. This is necessary because percpu sections
7c756e6e Tejun Heo 2009-06-24 59 * will be located outside of the usually addressable area.
7c756e6e Tejun Heo 2009-06-24 60 *
7c756e6e Tejun Heo 2009-06-24 61 * This definition puts the following two extra restrictions when
7c756e6e Tejun Heo 2009-06-24 62 * defining percpu variables.
7c756e6e Tejun Heo 2009-06-24 63 *
7c756e6e Tejun Heo 2009-06-24 64 * 1. The symbol must be globally unique, even the static ones.
7c756e6e Tejun Heo 2009-06-24 65 * 2. Static percpu variables cannot be defined inside a function.
7c756e6e Tejun Heo 2009-06-24 66 *
7c756e6e Tejun Heo 2009-06-24 67 * Archs which need weak percpu definitions should define
7c756e6e Tejun Heo 2009-06-24 68 * ARCH_NEEDS_WEAK_PER_CPU in asm/percpu.h when necessary.
7c756e6e Tejun Heo 2009-06-24 69 *
7c756e6e Tejun Heo 2009-06-24 70 * To ensure that the generic code observes the above two
7c756e6e Tejun Heo 2009-06-24 71 * restrictions, if CONFIG_DEBUG_FORCE_WEAK_PER_CPU is set weak
7c756e6e Tejun Heo 2009-06-24 72 * definition is used for all cases.
7c756e6e Tejun Heo 2009-06-24 73 */
7c756e6e Tejun Heo 2009-06-24 74 #if defined(ARCH_NEEDS_WEAK_PER_CPU) || defined(CONFIG_DEBUG_FORCE_WEAK_PER_CPU)
7c756e6e Tejun Heo 2009-06-24 75 /*
7c756e6e Tejun Heo 2009-06-24 76 * __pcpu_scope_* dummy variable is used to enforce scope. It
7c756e6e Tejun Heo 2009-06-24 77 * receives the static modifier when it's used in front of
7c756e6e Tejun Heo 2009-06-24 78 * DEFINE_PER_CPU() and will trigger build failure if
7c756e6e Tejun Heo 2009-06-24 79 * DECLARE_PER_CPU() is used for the same variable.
7c756e6e Tejun Heo 2009-06-24 80 *
7c756e6e Tejun Heo 2009-06-24 81 * __pcpu_unique_* dummy variable is used to enforce symbol uniqueness
7c756e6e Tejun Heo 2009-06-24 82 * such that hidden weak symbol collision, which will cause unrelated
7c756e6e Tejun Heo 2009-06-24 83 * variables to share the same address, can be detected during build.
7c756e6e Tejun Heo 2009-06-24 84 */
7c756e6e Tejun Heo 2009-06-24 85 #define DECLARE_PER_CPU_SECTION(type, name, sec) \
7c756e6e Tejun Heo 2009-06-24 86 extern __PCPU_DUMMY_ATTRS char __pcpu_scope_##name; \
dd17c8f7 Rusty Russell 2009-10-29 87 extern __PCPU_ATTRS(sec) __typeof__(type) name
7c756e6e Tejun Heo 2009-06-24 88
7c756e6e Tejun Heo 2009-06-24 89 #define DEFINE_PER_CPU_SECTION(type, name, sec) \
7c756e6e Tejun Heo 2009-06-24 90 __PCPU_DUMMY_ATTRS char __pcpu_scope_##name; \
0f5e4816 Tejun Heo 2009-10-29 @91 extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
7c756e6e Tejun Heo 2009-06-24 @92 __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
b1a0fbfd Tejun Heo 2013-12-04 93 extern __PCPU_ATTRS(sec) __typeof__(type) name; \
69a60bc7 Alexander Pateenok 2018-10-30 94 __PCPU_ATTRS(sec) __weak __typeof__(type) name
7c756e6e Tejun Heo 2009-06-24 95 #else
7c756e6e Tejun Heo 2009-06-24 96 /*
7c756e6e Tejun Heo 2009-06-24 97 * Normal declaration and definition macros.
7c756e6e Tejun Heo 2009-06-24 98 */
7c756e6e Tejun Heo 2009-06-24 99 #define DECLARE_PER_CPU_SECTION(type, name, sec) \
dd17c8f7 Rusty Russell 2009-10-29 100 extern __PCPU_ATTRS(sec) __typeof__(type) name
7c756e6e Tejun Heo 2009-06-24 101
:::::: The code at line 92 was first introduced by commit
:::::: 7c756e6e19e71f0327760d8955f7077118ebb2b1 percpu: implement optional weak percpu definitions
:::::: TO: Tejun Heo <tj@kernel.org>
:::::: CC: Tejun Heo <tj@kernel.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
Hi Bernard,
I love your patch! Yet something to improve:
[auto build test ERROR on rdma/for-next]
[also build test ERROR on next-20190221]
[cannot apply to v5.0-rc4]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Bernard-Metzler/SIW-Request-for-Comments/20190221-220427
base: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next
config: i386-allmodconfig (attached as .config)
compiler: gcc-8 (Debian 8.2.0-20) 8.2.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
drivers/infiniband/sw/siw/siw_qp.c: In function 'siw_activate_tx':
drivers/infiniband/sw/siw/siw_qp.c:1142:28: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
wqe->sqe.sge[0].laddr = (u64)&wqe->sqe.sge[1];
^
In file included from arch/x86/include/asm/atomic.h:8,
from arch/x86/include/asm/msr.h:67,
from arch/x86/include/asm/processor.h:21,
from arch/x86/include/asm/archrandom.h:26,
from include/linux/random.h:166,
from include/linux/net.h:22,
from drivers/infiniband/sw/siw/siw_qp.c:42:
In function 'siw_cq_notify_now.isra.4',
inlined from 'siw_sqe_complete' at drivers/infiniband/sw/siw/siw_qp.c:1269:13:
>> arch/x86/include/asm/cmpxchg.h:67:4: error: call to '__xchg_wrong_size' declared with attribute error: Bad argument size for xchg
__ ## op ## _wrong_size(); \
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/cmpxchg.h:78:27: note: in expansion of macro '__xchg_op'
#define arch_xchg(ptr, v) __xchg_op((ptr), (v), xchg, "")
^~~~~~~~~
include/asm-generic/atomic-instrumented.h:415:2: note: in expansion of macro 'arch_xchg'
arch_xchg(__ai_ptr, (new)); \
^~~~~~~~~
arch/x86/include/asm/barrier.h:65:47: note: in expansion of macro 'xchg'
#define __smp_store_mb(var, value) do { (void)xchg(&var, value); } while (0)
^~~~
include/asm-generic/barrier.h:145:35: note: in expansion of macro '__smp_store_mb'
#define smp_store_mb(var, value) __smp_store_mb(var, value)
^~~~~~~~~~~~~~
drivers/infiniband/sw/siw/siw_qp.c:1217:3: note: in expansion of macro 'smp_store_mb'
smp_store_mb(*cq->notify, SIW_NOTIFY_NOT);
^~~~~~~~~~~~
In function 'siw_cq_notify_now.isra.4',
inlined from 'siw_rqe_complete' at drivers/infiniband/sw/siw/siw_qp.c:1324:13:
>> arch/x86/include/asm/cmpxchg.h:67:4: error: call to '__xchg_wrong_size' declared with attribute error: Bad argument size for xchg
__ ## op ## _wrong_size(); \
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/cmpxchg.h:78:27: note: in expansion of macro '__xchg_op'
#define arch_xchg(ptr, v) __xchg_op((ptr), (v), xchg, "")
^~~~~~~~~
include/asm-generic/atomic-instrumented.h:415:2: note: in expansion of macro 'arch_xchg'
arch_xchg(__ai_ptr, (new)); \
^~~~~~~~~
arch/x86/include/asm/barrier.h:65:47: note: in expansion of macro 'xchg'
#define __smp_store_mb(var, value) do { (void)xchg(&var, value); } while (0)
^~~~
include/asm-generic/barrier.h:145:35: note: in expansion of macro '__smp_store_mb'
#define smp_store_mb(var, value) __smp_store_mb(var, value)
^~~~~~~~~~~~~~
drivers/infiniband/sw/siw/siw_qp.c:1217:3: note: in expansion of macro 'smp_store_mb'
smp_store_mb(*cq->notify, SIW_NOTIFY_NOT);
^~~~~~~~~~~~
vim +/__xchg_wrong_size +67 arch/x86/include/asm/cmpxchg.h
e9826380 Jeremy Fitzhardinge 2011-08-18 37
e9826380 Jeremy Fitzhardinge 2011-08-18 38 /*
31a8394e Jeremy Fitzhardinge 2011-09-30 39 * An exchange-type operation, which takes a value and a pointer, and
7f5281ae Li Zhong 2013-04-25 40 * returns the old value.
e9826380 Jeremy Fitzhardinge 2011-08-18 41 */
31a8394e Jeremy Fitzhardinge 2011-09-30 42 #define __xchg_op(ptr, arg, op, lock) \
e9826380 Jeremy Fitzhardinge 2011-08-18 43 ({ \
31a8394e Jeremy Fitzhardinge 2011-09-30 44 __typeof__ (*(ptr)) __ret = (arg); \
31a8394e Jeremy Fitzhardinge 2011-09-30 45 switch (sizeof(*(ptr))) { \
e9826380 Jeremy Fitzhardinge 2011-08-18 46 case __X86_CASE_B: \
31a8394e Jeremy Fitzhardinge 2011-09-30 47 asm volatile (lock #op "b %b0, %1\n" \
2ca052a3 Jeremy Fitzhardinge 2012-04-02 48 : "+q" (__ret), "+m" (*(ptr)) \
31a8394e Jeremy Fitzhardinge 2011-09-30 49 : : "memory", "cc"); \
e9826380 Jeremy Fitzhardinge 2011-08-18 50 break; \
e9826380 Jeremy Fitzhardinge 2011-08-18 51 case __X86_CASE_W: \
31a8394e Jeremy Fitzhardinge 2011-09-30 52 asm volatile (lock #op "w %w0, %1\n" \
31a8394e Jeremy Fitzhardinge 2011-09-30 53 : "+r" (__ret), "+m" (*(ptr)) \
31a8394e Jeremy Fitzhardinge 2011-09-30 54 : : "memory", "cc"); \
e9826380 Jeremy Fitzhardinge 2011-08-18 55 break; \
e9826380 Jeremy Fitzhardinge 2011-08-18 56 case __X86_CASE_L: \
31a8394e Jeremy Fitzhardinge 2011-09-30 57 asm volatile (lock #op "l %0, %1\n" \
31a8394e Jeremy Fitzhardinge 2011-09-30 58 : "+r" (__ret), "+m" (*(ptr)) \
31a8394e Jeremy Fitzhardinge 2011-09-30 59 : : "memory", "cc"); \
e9826380 Jeremy Fitzhardinge 2011-08-18 60 break; \
e9826380 Jeremy Fitzhardinge 2011-08-18 61 case __X86_CASE_Q: \
31a8394e Jeremy Fitzhardinge 2011-09-30 62 asm volatile (lock #op "q %q0, %1\n" \
31a8394e Jeremy Fitzhardinge 2011-09-30 63 : "+r" (__ret), "+m" (*(ptr)) \
31a8394e Jeremy Fitzhardinge 2011-09-30 64 : : "memory", "cc"); \
e9826380 Jeremy Fitzhardinge 2011-08-18 65 break; \
e9826380 Jeremy Fitzhardinge 2011-08-18 66 default: \
31a8394e Jeremy Fitzhardinge 2011-09-30 @67 __ ## op ## _wrong_size(); \
e9826380 Jeremy Fitzhardinge 2011-08-18 68 } \
31a8394e Jeremy Fitzhardinge 2011-09-30 69 __ret; \
e9826380 Jeremy Fitzhardinge 2011-08-18 70 })
e9826380 Jeremy Fitzhardinge 2011-08-18 71
:::::: The code at line 67 was first introduced by commit
:::::: 31a8394e069e47dc47f4c29e4213aa943342f19f x86: consolidate xchg and xadd macros
:::::: TO: Jeremy Fitzhardinge <jeremy@goop.org>
:::::: CC: Jeremy Fitzhardinge <jeremy@goop.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
On 19-Feb-19 12:09, Bernard Metzler wrote: > Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com> > --- > MAINTAINERS | 7 +++++++ > drivers/infiniband/Kconfig | 1 + > drivers/infiniband/sw/Makefile | 1 + > drivers/infiniband/sw/siw/Kconfig | 17 +++++++++++++++++ > drivers/infiniband/sw/siw/Makefile | 15 +++++++++++++++ > 5 files changed, 41 insertions(+) > create mode 100644 drivers/infiniband/sw/siw/Kconfig > create mode 100644 drivers/infiniband/sw/siw/Makefile > > diff --git a/MAINTAINERS b/MAINTAINERS > index 8c68de3cfd80..34f0f0c7af19 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -14055,6 +14055,13 @@ M: Chris Boot <bootc@bootc.net> > S: Maintained > F: drivers/leds/leds-net48xx.c > > +SOFT-ROCE DRIVER (siw) This is not a soft roce driver :). > +M: Bernard Metzler <bmt@zurich.ibm.com> > +L: linux-rdma@vger.kernel.org > +S: Supported > +F: drivers/infiniband/sw/siw/ > +F: include/uapi/rdma/siw_user.h > + > SOFT-ROCE DRIVER (rxe) > M: Moni Shoua <monis@mellanox.com> > L: linux-rdma@vger.kernel.org > diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig > index a1fb840de45d..6d160aac26df 100644 > --- a/drivers/infiniband/Kconfig > +++ b/drivers/infiniband/Kconfig > @@ -107,6 +107,7 @@ source "drivers/infiniband/hw/hfi1/Kconfig" > source "drivers/infiniband/hw/qedr/Kconfig" > source "drivers/infiniband/sw/rdmavt/Kconfig" > source "drivers/infiniband/sw/rxe/Kconfig" > +source "drivers/infiniband/sw/siw/Kconfig" > endif > > source "drivers/infiniband/ulp/ipoib/Kconfig" > diff --git a/drivers/infiniband/sw/Makefile b/drivers/infiniband/sw/Makefile > index 8b095b27db87..d37610fcbbc7 100644 > --- a/drivers/infiniband/sw/Makefile > +++ b/drivers/infiniband/sw/Makefile > @@ -1,2 +1,3 @@ > obj-$(CONFIG_INFINIBAND_RDMAVT) += rdmavt/ > obj-$(CONFIG_RDMA_RXE) += rxe/ > +obj-$(CONFIG_RDMA_SIW) += siw/ > diff --git a/drivers/infiniband/sw/siw/Kconfig b/drivers/infiniband/sw/siw/Kconfig > new file mode 100644 > index 000000000000..f4f0210256bd > --- /dev/null > +++ b/drivers/infiniband/sw/siw/Kconfig > @@ -0,0 +1,17 @@ > +config RDMA_SIW > + tristate "Software RDMA over TCP/IP (iWARP) driver" > + depends on INET && INFINIBAND && CRYPTO_CRC32 > + ---help--- According to checkpatch: WARNING: prefer 'help' over '---help---' for new help texts > + This driver implements the iWARP RDMA transport over > + the Linux TCP/IP network stack. It enables a system with a > + standard Ethernet adapter to interoperate with a iWARP > + adapter or with another system running the SIW driver. > + (See also RXE which is a similar software driver for RoCE.) > + > + The driver interfaces with the Linux RDMA stack and > + implements both a kernel and user space RDMA verbs API. > + The user space verbs API requires a support > + library named libsiw which is loaded by the generic user > + space verbs API, libibverbs. To implement RDMA over > + TCP/IP, the driver further interfaces with the Linux > + in-kernel TCP socket layer. > diff --git a/drivers/infiniband/sw/siw/Makefile b/drivers/infiniband/sw/siw/Makefile > new file mode 100644 > index 000000000000..20f31c9e827b > --- /dev/null > +++ b/drivers/infiniband/sw/siw/Makefile > @@ -0,0 +1,15 @@ > +obj-$(CONFIG_RDMA_SIW) += siw.o > + > +siw-y := \ > + siw_main.o \ > + siw_cm.o \ > + siw_verbs.o \ > + siw_obj.o \ > + siw_qp.o \ > + siw_qp_tx.o \ > + siw_qp_rx.o \ > + siw_cq.o \ > + siw_cm.o \ > + siw_debug.o \ > + siw_ae.o \ > + siw_mem.o > Reviewed-by: Gal Pressman <galpress@amazon.com>
--- Bernard Metzler, PhD Tech. Leader High Performance I/O, Principal Research Staff IBM Zurich Research Laboratory Saeumerstrasse 4 CH-8803 Rueschlikon, Switzerland +41 44 724 8605 -----"Gal Pressman" <galpress@amazon.com> wrote: ----- >To: "Bernard Metzler" <bmt@zurich.ibm.com>, ><linux-rdma@vger.kernel.org> >From: "Gal Pressman" <galpress@amazon.com> >Date: 02/28/2019 12:51PM >Subject: Re: [PATCH v5 13/13] SIW addition to kernel build >environment > >On 19-Feb-19 12:09, Bernard Metzler wrote: >> Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com> >> --- >> MAINTAINERS | 7 +++++++ >> drivers/infiniband/Kconfig | 1 + >> drivers/infiniband/sw/Makefile | 1 + >> drivers/infiniband/sw/siw/Kconfig | 17 +++++++++++++++++ >> drivers/infiniband/sw/siw/Makefile | 15 +++++++++++++++ >> 5 files changed, 41 insertions(+) >> create mode 100644 drivers/infiniband/sw/siw/Kconfig >> create mode 100644 drivers/infiniband/sw/siw/Makefile >> >> diff --git a/MAINTAINERS b/MAINTAINERS >> index 8c68de3cfd80..34f0f0c7af19 100644 >> --- a/MAINTAINERS >> +++ b/MAINTAINERS >> @@ -14055,6 +14055,13 @@ M: Chris Boot <bootc@bootc.net> >> S: Maintained >> F: drivers/leds/leds-net48xx.c >> >> +SOFT-ROCE DRIVER (siw) > >This is not a soft roce driver :). Hahaha! good catch. thanks! I am happy I at least changed the maintainer after copypaste. > >> +M: Bernard Metzler <bmt@zurich.ibm.com> >> +L: linux-rdma@vger.kernel.org >> +S: Supported >> +F: drivers/infiniband/sw/siw/ >> +F: include/uapi/rdma/siw_user.h >> + >> SOFT-ROCE DRIVER (rxe) >> M: Moni Shoua <monis@mellanox.com> >> L: linux-rdma@vger.kernel.org >> diff --git a/drivers/infiniband/Kconfig >b/drivers/infiniband/Kconfig >> index a1fb840de45d..6d160aac26df 100644 >> --- a/drivers/infiniband/Kconfig >> +++ b/drivers/infiniband/Kconfig >> @@ -107,6 +107,7 @@ source "drivers/infiniband/hw/hfi1/Kconfig" >> source "drivers/infiniband/hw/qedr/Kconfig" >> source "drivers/infiniband/sw/rdmavt/Kconfig" >> source "drivers/infiniband/sw/rxe/Kconfig" >> +source "drivers/infiniband/sw/siw/Kconfig" >> endif >> >> source "drivers/infiniband/ulp/ipoib/Kconfig" >> diff --git a/drivers/infiniband/sw/Makefile >b/drivers/infiniband/sw/Makefile >> index 8b095b27db87..d37610fcbbc7 100644 >> --- a/drivers/infiniband/sw/Makefile >> +++ b/drivers/infiniband/sw/Makefile >> @@ -1,2 +1,3 @@ >> obj-$(CONFIG_INFINIBAND_RDMAVT) += rdmavt/ >> obj-$(CONFIG_RDMA_RXE) += rxe/ >> +obj-$(CONFIG_RDMA_SIW) += siw/ >> diff --git a/drivers/infiniband/sw/siw/Kconfig >b/drivers/infiniband/sw/siw/Kconfig >> new file mode 100644 >> index 000000000000..f4f0210256bd >> --- /dev/null >> +++ b/drivers/infiniband/sw/siw/Kconfig >> @@ -0,0 +1,17 @@ >> +config RDMA_SIW >> + tristate "Software RDMA over TCP/IP (iWARP) driver" >> + depends on INET && INFINIBAND && CRYPTO_CRC32 >> + ---help--- > >According to checkpatch: >WARNING: prefer 'help' over '---help---' for new help texts OK, thanks! > >> + This driver implements the iWARP RDMA transport over >> + the Linux TCP/IP network stack. It enables a system with a >> + standard Ethernet adapter to interoperate with a iWARP >> + adapter or with another system running the SIW driver. >> + (See also RXE which is a similar software driver for RoCE.) >> + >> + The driver interfaces with the Linux RDMA stack and >> + implements both a kernel and user space RDMA verbs API. >> + The user space verbs API requires a support >> + library named libsiw which is loaded by the generic user >> + space verbs API, libibverbs. To implement RDMA over >> + TCP/IP, the driver further interfaces with the Linux >> + in-kernel TCP socket layer. >> diff --git a/drivers/infiniband/sw/siw/Makefile >b/drivers/infiniband/sw/siw/Makefile >> new file mode 100644 >> index 000000000000..20f31c9e827b >> --- /dev/null >> +++ b/drivers/infiniband/sw/siw/Makefile >> @@ -0,0 +1,15 @@ >> +obj-$(CONFIG_RDMA_SIW) += siw.o >> + >> +siw-y := \ >> + siw_main.o \ >> + siw_cm.o \ >> + siw_verbs.o \ >> + siw_obj.o \ >> + siw_qp.o \ >> + siw_qp_tx.o \ >> + siw_qp_rx.o \ >> + siw_cq.o \ >> + siw_cm.o \ >> + siw_debug.o \ >> + siw_ae.o \ >> + siw_mem.o >> > >Reviewed-by: Gal Pressman <galpress@amazon.com> > >
diff --git a/MAINTAINERS b/MAINTAINERS index 8c68de3cfd80..34f0f0c7af19 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14055,6 +14055,13 @@ M: Chris Boot <bootc@bootc.net> S: Maintained F: drivers/leds/leds-net48xx.c +SOFT-ROCE DRIVER (siw) +M: Bernard Metzler <bmt@zurich.ibm.com> +L: linux-rdma@vger.kernel.org +S: Supported +F: drivers/infiniband/sw/siw/ +F: include/uapi/rdma/siw_user.h + SOFT-ROCE DRIVER (rxe) M: Moni Shoua <monis@mellanox.com> L: linux-rdma@vger.kernel.org diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig index a1fb840de45d..6d160aac26df 100644 --- a/drivers/infiniband/Kconfig +++ b/drivers/infiniband/Kconfig @@ -107,6 +107,7 @@ source "drivers/infiniband/hw/hfi1/Kconfig" source "drivers/infiniband/hw/qedr/Kconfig" source "drivers/infiniband/sw/rdmavt/Kconfig" source "drivers/infiniband/sw/rxe/Kconfig" +source "drivers/infiniband/sw/siw/Kconfig" endif source "drivers/infiniband/ulp/ipoib/Kconfig" diff --git a/drivers/infiniband/sw/Makefile b/drivers/infiniband/sw/Makefile index 8b095b27db87..d37610fcbbc7 100644 --- a/drivers/infiniband/sw/Makefile +++ b/drivers/infiniband/sw/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_INFINIBAND_RDMAVT) += rdmavt/ obj-$(CONFIG_RDMA_RXE) += rxe/ +obj-$(CONFIG_RDMA_SIW) += siw/ diff --git a/drivers/infiniband/sw/siw/Kconfig b/drivers/infiniband/sw/siw/Kconfig new file mode 100644 index 000000000000..f4f0210256bd --- /dev/null +++ b/drivers/infiniband/sw/siw/Kconfig @@ -0,0 +1,17 @@ +config RDMA_SIW + tristate "Software RDMA over TCP/IP (iWARP) driver" + depends on INET && INFINIBAND && CRYPTO_CRC32 + ---help--- + This driver implements the iWARP RDMA transport over + the Linux TCP/IP network stack. It enables a system with a + standard Ethernet adapter to interoperate with a iWARP + adapter or with another system running the SIW driver. + (See also RXE which is a similar software driver for RoCE.) + + The driver interfaces with the Linux RDMA stack and + implements both a kernel and user space RDMA verbs API. + The user space verbs API requires a support + library named libsiw which is loaded by the generic user + space verbs API, libibverbs. To implement RDMA over + TCP/IP, the driver further interfaces with the Linux + in-kernel TCP socket layer. diff --git a/drivers/infiniband/sw/siw/Makefile b/drivers/infiniband/sw/siw/Makefile new file mode 100644 index 000000000000..20f31c9e827b --- /dev/null +++ b/drivers/infiniband/sw/siw/Makefile @@ -0,0 +1,15 @@ +obj-$(CONFIG_RDMA_SIW) += siw.o + +siw-y := \ + siw_main.o \ + siw_cm.o \ + siw_verbs.o \ + siw_obj.o \ + siw_qp.o \ + siw_qp_tx.o \ + siw_qp_rx.o \ + siw_cq.o \ + siw_cm.o \ + siw_debug.o \ + siw_ae.o \ + siw_mem.o
Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com> --- MAINTAINERS | 7 +++++++ drivers/infiniband/Kconfig | 1 + drivers/infiniband/sw/Makefile | 1 + drivers/infiniband/sw/siw/Kconfig | 17 +++++++++++++++++ drivers/infiniband/sw/siw/Makefile | 15 +++++++++++++++ 5 files changed, 41 insertions(+) create mode 100644 drivers/infiniband/sw/siw/Kconfig create mode 100644 drivers/infiniband/sw/siw/Makefile