- 11 Jul, 2018 3 commits
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Arnd Bergmann authored
The nes infiniband driver uses current_kernel_time() to get a nanosecond granunarity timestamp to initialize its tcp sequence counters. This is one of only a few remaining users of that deprecated function, so we should try to get rid of it. Aside from using a deprecated API, there are several problems I see here: - Using a CLOCK_REALTIME based time source makes it predictable in case the time base is synchronized. - Using a coarse timestamp means it only gets updated once per jiffie, making it even more predictable in order to avoid having to access the hardware clock source - The upper 2 bits are always zero because the nanoseconds are at most 999999999. For the Linux TCP implementation, we use secure_tcp_seq(), which appears to be appropriate here as well, and solves all the above problems. i40iw uses a variant of the same code, so I do that same thing there for ipv4. Unlike nes, i40e also supports ipv6, which needs to call secure_tcpv6_seq instead. Acked-by:
Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
Jason Gunthorpe <jgg@mellanox.com>
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Bart Van Assche authored
Avoid that the compiler reports the following when building with W=1: drivers/infiniband/hw/nes/nes_utils.c: In function 'nes_arp_table': drivers/infiniband/hw/nes/nes_utils.c:689:9: warning: variable 'tmp_addr' set but not used [-Wunused-but-set-variable] __be32 tmp_addr; ^~~~~~~~ drivers/infiniband/hw/nes/nes_hw.c: In function 'flush_wqes': drivers/infiniband/hw/nes/nes_hw.c:3840:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable] int ret; ^~~ drivers/infiniband/hw/nes/nes_verbs.c: In function 'nes_setup_virt_qp': drivers/infiniband/hw/nes/nes_verbs.c:811:6: warning: variable 'pbl_entries' set but not used [-Wunused-but-set-variable] u32 pbl_entries; ^~~~~~~~~~~ drivers/infiniband/hw/nes/nes_verbs.c: In function 'nes_dereg_mr': drivers/infiniband/hw/nes/nes_verbs.c:2487:6: warning: variable 'minor_code' set but not used [-Wunused-but-set-variable] u16 minor_code; ^~~~~~~~~~ drivers/infiniband/hw/nes/nes_cm.c: In function 'mini_cm_recv_pkt': drivers/infiniband/hw/nes/nes_cm.c:2570:20: warning: variable 'tmp_saddr' set but not used [-Wunused-but-set-variable] __be32 tmp_daddr, tmp_saddr; ^~~~~~~~~ drivers/infiniband/hw/nes/nes_cm.c:2570:9: warning: variable 'tmp_daddr' set but not used [-Wunused-but-set-variable] __be32 tmp_daddr, tmp_saddr; ^~~~~~~~~ drivers/infiniband/hw/nes/nes_cm.c: In function 'cm_event_connected': drivers/infiniband/hw/nes/nes_cm.c:3578:22: warning: variable 'raddr' set but not used [-Wunused-but-set-variable] struct sockaddr_in *raddr; ^~~~~ drivers/infiniband/hw/nes/nes_cm.c: In function 'cm_event_reset': drivers/infiniband/hw/nes/nes_cm.c:3753:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable] int ret; ^~~ Signed-off-by:Bart Van Assche <bart.vanassche@wdc.com> Cc: Faisal Latif <faisal.latif@intel.com> Cc: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com> Signed-off-by:
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Jason Gunthorpe authored
In some configurations even gcc 7 cannot unravel this complexity and still throws a warning. Fixes: 4ab39e2f ("RDMA/cxgb4: Make c4iw_poll_cq_one() easier to analyze") Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Reviewed-by:
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- 10 Jul, 2018 6 commits
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Yishai Hadas authored
Enable uverbs_destroy_def_handler to be used by drivers and replace current code to use it. Signed-off-by:
Yishai Hadas <yishaih@mellanox.com> Signed-off-by:
Leon Romanovsky <leonro@mellanox.com> Signed-off-by:
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Jan Dakinevich authored
An array of pointers to SRPT contexts in ib_device is over 30KiB even in default case, in which an amount of contexts is 4095. The patch is intended to weed out large contigous allocation for non-DMA memory. Signed-off-by:
Jan Dakinevich <jan.dakinevich@virtuozzo.com> Reviewed-by:
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Artemy Kovalyov authored
Userspace also needs to know if the port requires GRHs to properly form the AVs it creates. Signed-off-by:
Artemy Kovalyov <artemyko@mellanox.com> Signed-off-by:
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Artemy Kovalyov authored
Extend the existing grh_required flag to check when AV's are handled that a GRH is present. Since we don't want to do query_port during the AV checks for performance reasons move the flag into the immutable_data. Signed-off-by:
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Jason Gunthorpe authored
grh_required is intended to be a global setting where all AV's will require a GRH, not just the sm_lid. Move the special logic to the creation of the SM AH. Signed-off-by:
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Jason Gunthorpe authored
The internal flag IP_BASED_GIDS was added to a field that was being used to hold the port Info CapabilityMask without considering the effects this will have. Since most drivers just use the value from the HW MAD it means IP_BASED_GIDS will also become set on any HW that sets the IBA flag IsOtherLocalChangesNoticeSupported - which is not intended. Fix this by keeping port_cap_flags only for the IBA CapabilityMask value and store unrelated flags externally. Move the bit definitions for this to ib_mad.h to make it clear what is happening. To keep the uAPI unchanged define a new set of flags in the uapi header that are only used by ib_uverbs_query_port_resp.port_cap_flags which match the current flags supported in rdma-core, and the values exposed by the current kernel. Fixes: b4a26a27 ("IB: Report using RoCE IP based gids in port caps") Signed-off-by:
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- 09 Jul, 2018 26 commits
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Kamal Heib authored
The proper return code is -EOPNOTSUPP and not -ENOSYS when the function isn't supported, also make sure to return the right error code from ipoib_transport_dev_init() when ipoib_cm_dev_init() is supported. Signed-off-by:
Kamal Heib <kamalheib1@gmail.com> Signed-off-by:
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Parav Pandit authored
roce_resolve_route_from_path() resolves the route based on the netdevice of the GID attribute, therefore there is no point in checking again if the route is resolved matches the same interface it arrived. Signed-off-by:
Parav Pandit <parav@mellanox.com> Signed-off-by:
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Parav Pandit authored
It is incorrect to depend on set_id value to know if counters were allocated or not. set_id_valid field is set to true when counters were allocated. Therefore, use set_id_valid while deciding to free counters. Cc: <stable@vger.kernel.org> # 4.15 Fixes: aac4492e ("IB/mlx5: Update counter implementation for dual port RoCE") Signed-off-by:
Daniel Jurgens <danielj@mellanox.com> Signed-off-by:
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Leon Romanovsky authored
Clean up a little bit code to drop unused port_num parameter. Signed-off-by:
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Jason Gunthorpe authored
Instead we are now checking the function pointers directly. Get rid of both cases in ioctl and drop the nonsense idea that destroy can fail. Signed-off-by:
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Jann Horn authored
In general, accessing userspace memory beyond the length of the supplied buffer in VFS read/write handlers can lead to both kernel memory corruption (via kernel_read()/kernel_write(), which can e.g. be triggered via sys_splice()) and privilege escalation inside userspace. In this case, the affected files are in debugfs (and should therefore only be accessible to root), and the read handlers check that *pos is zero (meaning that at least sys_splice() can't trigger kernel memory corruption). Because of the root requirement, this is not a security fix, but rather a cleanup. For the read handlers, fix it by using simple_read_from_buffer() instead of custom logic. Add min() calls to the write handlers. Fixes: 4a2da0b8 ("IB/mlx5: Add debug control parameters for congestion control") Fixes: e126ba97 ("mlx5: Add driver for Mellanox Connect-IB adapters") Signed-off-by:
Jann Horn <jannh@google.com> Reviewed-by:
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Bart Van Assche authored
Fixes: 0e353e34 ("IB/core: add RW API support for signature MRs") Signed-off-by:
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Bart Van Assche authored
Introduce the function __c4iw_poll_cq_one() such that c4iw_poll_cq_one() becomes easier to analyze for static source code analyzers. This patch avoids that sparse reports the following: drivers/infiniband/hw/cxgb4/cq.c:401:36: warning: context imbalance in 'c4iw_flush_hw_cq' - unexpected unlock drivers/infiniband/hw/cxgb4/cq.c:824:9: warning: context imbalance in 'c4iw_poll_cq_one' - different lock contexts for basic block Compile-tested only. Signed-off-by:
Steve Wise <swise@opengridcomputing.com> Signed-off-by:
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Bart Van Assche authored
Introduce the function __iwch_poll_cq_one() to make iwch_poll_cq_one() easier to analyze for static source code analyzers. This patch avoids that sparse reports the following: drivers/infiniband/hw/cxgb3/iwch_cq.c:187:9: warning: context imbalance in 'iwch_poll_cq_one' - different lock contexts for basic block Compile-tested only. Signed-off-by:
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Bart Van Assche authored
This patch not only simplifies the error handling code in rxe_create_ah() but also removes the dead code that was left behind by commit 47ec3866 ("RDMA: Convert drivers to use sgid_attr instead of sgid_index"). Signed-off-by:
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Bart Van Assche authored
This patch does not change any functionality. Signed-off-by:
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Bart Van Assche authored
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Bart Van Assche authored
Avoid that the following compiler warning is reported when building with W=1: drivers/infiniband/hw/nes/nes_hw.c:646:51: warning: suggest braces around empty body in an 'if' statement [-Wempty-body] Signed-off-by:
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Bart Van Assche authored
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Bart Van Assche authored
Remove these two functions since all their callers have been removed. See also commit ea8c2d8f ("RDMA/core: Remove unused ib cache functions"). Signed-off-by:
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Kamal Heib authored
Make sure to use sizeof(...) instead of sizeof ... which is more preferred. Signed-off-by:
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Kamal Heib authored
This commit replaces all the unsigned definitions in favour of 'unsigned int' which is preferred. Signed-off-by:
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Kamal Heib authored
Use min_t() macro to avoid the casting when using min() macro, also fix the type of "length" and "wc->byte_len" to be "unsigned int" and "u32" which is the right type for each one of them. Signed-off-by:
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Håkon Bugge authored
In cm_form_tid(), a two bit message sequence number is OR'ed into bit 31-30 of the lower TID value. After commit f06d2653 ("IB/cm: Randomize starting comm ID"), the local_id is XOR'ed with a 32-bit random value. Hence, bit 31-30 in the lower TID now has an arbitrarily value and it makes no sense to OR in the message sequence number. Adding to that, the evolution in use of IDR routines in cm_alloc_id() has always had the possibility of returning a value with bit 30 set. In addition, said bits are never checked. Hence, remove the encoding and the corresponding enum. Signed-off-by:
Håkon Bugge <haakon.bugge@oracle.com> Signed-off-by:
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Jason Gunthorpe authored
Now that ib_uobject has a ib_uverbs_file we don't need this extra one in ib_ucq_object. Signed-off-by: -
Jason Gunthorpe authored
The only purpose for this structure was to hold the ib_uobject_file pointer, but now that is part of the standard ib_uobject the structure no longer makes any sense, so get rid of it. Signed-off-by:
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Jason Gunthorpe authored
Unnecessary clutter, to indirect through ucontext when the ufile would do. Generally most of the code code should only be working with ufile, except for a few places that touch the driver interface. Signed-off-by:
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Jason Gunthorpe authored
The ucontext isn't needed any more, just pass the uverbs_file directly. Signed-off-by:
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Jason Gunthorpe authored
The correct handle to refer to the idr/etc is ib_uverbs_file, revise all the core APIs to use this instead. The user API are left as wrappers that automatically convert a ucontext to a ufile for now. Signed-off-by:
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Jason Gunthorpe authored
The IDR is part of the ib_ufile so all the machinery to lock it, handle closing and disassociation rightly belongs to the ufile not the ucontext. This changes the lifetime of that data to match the lifetime of the file descriptor which is always strictly longer than the lifetime of the ucontext. We need the entire locking machinery to continue to exist after ucontext destruction to allow us to return the destroy data after a device has been disassociated. Signed-off-by:
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Jason Gunthorpe authored
This consolidates a bunch of repeated code patterns into a helper. Signed-off-by:
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- 04 Jul, 2018 5 commits
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Jason Gunthorpe authored
After all the rework is done it is now possible to include single flags in the type macros. Any user of UVERBS_ATTR_STRUCT needs to zero check data past the end of the known struct to be correct, so make this mandatory, and get rid of MIN_SZ_OR_ZERO as a user flag. This changes UVERBS_ATTR_TYPE to refer to a struct of exact size with not possibility of extension, convert the few users of UVERBS_ATTR_TYPE and MIN_SZ_OR_ZERO to use UVERBS_ATTR_STRUCT. The one user of UVERBS_ATTR_STRUCT without MIN_SZ_OR_ZERO is just confused. There is some padding at the end of that struct, but userspace always provides it with the padding. The construction doesn't test if the padding is zero, so it is pointless. Just use UVERBS_ATTR_TYPE. Finally, rename min_sz_or_zero to zero_trailing to better reflect what it does and hopefully avoid such mis-uses in the future. Signed-off-by:
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Jason Gunthorpe authored
This newer macro allows specifying a lower bound on the accepted size, and has an 'unlimited' upper bound. Due to this it never checks for trailing zeroing so it doesn't make any sense to combine it with MIN_SZ_OR_ZERO, so drop MIN_SZ_OR_ZERO when they are used together There were a couple of places that open coded this pattern, switch them to use the clearer UVERBS_ATTR_MIN_SIZE for clarity. Signed-off-by:
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Jason Gunthorpe authored
This bit of boilerplate isn't really necessary, we can use bitfields instead of a flags enum and the macros can then individually initialize them through the __VA_ARGS__ like everything else. Signed-off-by:
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Jason Gunthorpe authored
Hide it inside the macros. The & is confusing and interferes with using this as a generic DSL in later patches. Since this also touches almost every line, also run the specs through clang-format (with 'BinPackParameters: false') to make the maintenance easier. Signed-off-by:
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Jason Gunthorpe authored
Instead of the large set of indirecting macros, define the few needed macros to directly instantiate the struct uverbs_oject_tree_def and associated objects list. This is small amount of code duplication but the readability is far better. Signed-off-by:
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