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Enable siw to attach to tunnel devices, there is no reason not to, siw
properly generates all packets already.
Link: https://lore.kernel.org/r/20220510143917.23735-1-bmt@zurich.ibm.com
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Add a counter to keep track of the number of WQs connected to a CQ and
return an error if destroy_cq() is called while the counter is non zero.
Link: https://lore.kernel.org/r/20220421014042.26985-8-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Move code from rxe_dealloc_mw() to rxe_mw_cleanup() to allow flows which
hold a reference to mw to complete.
Link: https://lore.kernel.org/r/20220421014042.26985-7-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Move the code which tears down an mr to rxe_mr_cleanup to allow operations
holding a reference to the mr to complete.
Link: https://lore.kernel.org/r/20220421014042.26985-6-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Move the code from rxe_qp_destroy() to rxe_qp_do_cleanup(). This allows
flows holding references to qp to complete before the qp object is torn
down.
Link: https://lore.kernel.org/r/20220421014042.26985-5-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
In the tasklets (completer, responder, and requester) check the return
value from rxe_get() to detect failures to get a reference. This only
occurs if the qp has had its reference count drop to zero which indicates
that it no longer should be used.
The ref is never 0 today because the tasklets are flushed before the ref
is dropped. The next patch changes this so that the ref is dropped then
the tasklets are flushed.
Link: https://lore.kernel.org/r/20220421014042.26985-4-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Move cleanup code from rxe_destroy_srq() to rxe_srq_cleanup() which is
called after all references are dropped to allow code depending on the srq
object to complete.
Link: https://lore.kernel.org/r/20220421014042.26985-3-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Currently the #define IB_SRQ_INIT_MASK is used to distinguish the
rxe_create_srq verb from the rxe_modify_srq verb so that some code can be
shared between these two subroutines.
This commit splits rxe_srq_chk_attr into two subroutines: rxe_srq_chk_init
and rxe_srq_chk_attr which handle the create_srq and modify_srq verbs
separately.
Link: https://lore.kernel.org/r/20220421014042.26985-2-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
For write request the remote addr will be sent only with first packet so
we don't have to adjust wqe->iova in retry operation.
Link: https://lore.kernel.org/r/20220502053907.6388-1-cgxu519@mykernel.net
Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Reviewed-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Based on the commit c9f4c69583 ("RDMA/rxe: Reverse the sense of
RXE_POOL_NO_ALLOC"), only the mr pool uses the RXE_POOL_ALLOC, As such,
replace this flags with pool type to save memory.
Link: https://lore.kernel.org/r/20220428041028.1363139-1-yanjun.zhu@linux.dev
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
In finish_packet() in rxe_req.c a variable was incorrectly called paylen
instead of payload. Elsewhere in the rxe source payload is always used for
the RoCE payload length and paylen is always used for the UDP payload
length. This will cause unnecessary confusion.
Replace paylen by payload in finish_packet().
Link: https://lore.kernel.org/r/20220420172316.5465-1-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Current rxe_requester() doesn't generate a completion when processing an
unsupported/invalid opcode. If rxe driver doesn't support a new opcode
(e.g. RDMA Atomic Write) and RDMA library supports it, an application
using the new opcode can reproduce this issue. Fix the issue by calling
"goto err;".
Fixes: 8700e3e7c4 ("Soft RoCE driver")
Link: https://lore.kernel.org/r/20220410113513.27537-1-yangx.jy@fujitsu.com
Signed-off-by: Xiao Yang <yangx.jy@fujitsu.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The rdma_rxe driver does not actually support the reliable datagram
transport but contains two references to RD opcodes in driver code. This
commit removes these references to RD transport opcodes which are never
used.
Link: https://lore.kernel.org/r/cce0f07d-25fc-5880-69e7-001d951750b7@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Currently the rdma_rxe driver supports SMI type QPs in a few places which
is incorrect. RoCE devices never should support SMI QPs. This commit
removes SMI QP support from the driver.
Link: https://lore.kernel.org/r/20220407185416.16372-1-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Currently the rdma_rxe driver claims to support both 2A and 2B type memory
windows. But the IBA requires
010-37.2.31: If an HCA supports the Base Memory Management
extensions, the HCA shall support either Type 2A or Type 2B MWs,
but not both.
This commit removes the device capability bit for type 2A memory windows
and adds a clarifying comment to rxe_mw.c.
Link: https://lore.kernel.org/r/20220407184321.14207-1-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Split out flags from ib_device::device_cap_flags that are only used
internally to the kernel into kernel_cap_flags that is not part of the
uapi. This limits the device_cap_flags to being the same bitmap that will
be copied to userspace.
This cleanly splits out the uverbs flags from the kernel flags to avoid
confusion in the flags bitmap.
Add some short comments describing which each of the kernel flags is
connected to. Remove unused kernel flags.
Link: https://lore.kernel.org/r/0-v2-22c19e565eef+139a-kern_caps_jgg@nvidia.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The documentation of the function rvt_error_qp says both r_lock and
s_lock need to be held when calling that function.
It also asserts using lockdep that both of those locks are held.
rvt_error_qp is called form rvt_send_cq, which is called from
rvt_qp_complete_swqe, which is called from rvt_send_complete, which is
called from rvt_ruc_loopback in two places. Both of these places do not
hold r_lock. Fix this by acquiring a spin_lock of r_lock in both of
these places.
The r_lock acquiring cannot be added in rvt_qp_complete_swqe because
some of its other callers already have r_lock acquired.
Link: https://lore.kernel.org/r/20220228195144.71946-1-dossche.niels@gmail.com
Signed-off-by: Niels Dossche <dossche.niels@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Patchces for the merge window:
- Minor bug fixes in mlx5, mthca, pvrdma, rtrs, mlx4, hfi1, hns
- Minor cleanups: coding style, useless includes and documentation
- Reorganize how multicast processing works in rxe
- Replace a red/black tree with xarray in rxe which improves performance
- DSCP support and HW address handle re-use in irdma
- Simplify the mailbox command handling in hns
- Simplify iser now that FMR is eliminated
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
- Minor bug fixes in mlx5, mthca, pvrdma, rtrs, mlx4, hfi1, hns
- Minor cleanups: coding style, useless includes and documentation
- Reorganize how multicast processing works in rxe
- Replace a red/black tree with xarray in rxe which improves performance
- DSCP support and HW address handle re-use in irdma
- Simplify the mailbox command handling in hns
- Simplify iser now that FMR is eliminated
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (93 commits)
RDMA/nldev: Prevent underflow in nldev_stat_set_counter_dynamic_doit()
IB/iser: Fix error flow in case of registration failure
IB/iser: Generalize map/unmap dma tasks
IB/iser: Use iser_fr_desc as registration context
IB/iser: Remove iser_reg_data_sg helper function
RDMA/rxe: Use standard names for ref counting
RDMA/rxe: Replace red-black trees by xarrays
RDMA/rxe: Shorten pool names in rxe_pool.c
RDMA/rxe: Move max_elem into rxe_type_info
RDMA/rxe: Replace obj by elem in declaration
RDMA/rxe: Delete _locked() APIs for pool objects
RDMA/rxe: Reverse the sense of RXE_POOL_NO_ALLOC
RDMA/rxe: Replace mr by rkey in responder resources
RDMA/rxe: Fix ref error in rxe_av.c
RDMA/hns: Use the reserved loopback QPs to free MR before destroying MPT
RDMA/irdma: Add support for address handle re-use
RDMA/qib: Fix typos in comments
RDMA/mlx5: Fix memory leak in error flow for subscribe event routine
Revert "RDMA/core: Fix ib_qp_usecnt_dec() called when error"
RDMA/rxe: Remove useless argument for update_state()
...
Rename rxe_add_ref() to rxe_get() and rxe_drop_ref() to rxe_put().
Significantly improves readability for new readers.
Link: https://lore.kernel.org/r/20220304000808.225811-10-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Currently the rxe driver uses red-black trees to add indices to the rxe
object pools. Linux xarrays provide a better way to implement the same
functionality for indices. This patch replaces red-black trees by xarrays
for pool objects. Since xarrays already have a spinlock use that in place
of the pool rwlock. Make sure that all changes in the xarray(index) and
kref(ref counnt) occur atomically.
Link: https://lore.kernel.org/r/20220304000808.225811-9-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Move the maximum number of elements from a parameter in rxe_pool_init to a
member of the rxe_type_info array.
Link: https://lore.kernel.org/r/20220304000808.225811-7-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
There is only one remaining object type that allocates its own memory,
that is mr. So the sense of RXE_POOL_NO_ALLOC is changed to
RXE_POOL_ALLOC. Add checks to rxe_alloc() and rxe_add_to_pool() to make
sure the correct call is used for the setting of this flag.
Link: https://lore.kernel.org/r/20220304000808.225811-4-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Currently rxe saves a copy of MR in responder resources for RDMA reads.
Since the responder resources are never freed just over written if more
are needed this MR may not have a reference freed until the QP is
destroyed. This patch uses the rkey instead of the MR and on subsequent
packets of a multipacket read reply message it looks up the MR from the
rkey for each packet. This makes it possible for a user to deregister an
MR or unbind a MW on the fly and get correct behaviour.
Link: https://lore.kernel.org/r/20220304000808.225811-3-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The commit referenced below can take a reference to the AH which is never
dropped. This only happens in the UD request path. This patch optionally
passes that AH back to the caller so that it can hold the reference while
the AV is being accessed and then drop it. Code to do this is added to
rxe_req.c. The AV is also passed to rxe_prepare in rxe_net.c as an
optimization.
Fixes: e2fe06c908 ("RDMA/rxe: Lookup kernel AH from ah index in UD WQEs")
Link: https://lore.kernel.org/r/20220304000808.225811-2-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The argument 'payload' is not used in update_state(), so just remove it.
Link: https://lore.kernel.org/r/20220307145047.3235675-2-cgxu519@mykernel.net
Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Zhu Yanjun <zyjzyj2000@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The type of wqe length is u32 so in order to avoid overflow and shadow
casting change variable and relevant function argument to proper type.
Link: https://lore.kernel.org/r/20220307145047.3235675-1-cgxu519@mykernel.net
Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Collect cleanup code for struct rxe_mca into a subroutine,
__rxe_cleanup_mca() called in rxe_detach_mcg() in rxe_mcast.c.
Link: https://lore.kernel.org/r/20220223230706.50332-4-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Collect initialization code for struct rxe_mca into a subroutine,
__rxe_init_mca(), to cleanup rxe_attach_mcg() in rxe_mcast.c. Check
limit on total number of attached qp's.
Link: https://lore.kernel.org/r/20220223230706.50332-3-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Finish removing mcg from rxe pools. Replace rxe pools ref counting by
kref's. Replace rxe_alloc by kzalloc.
Link: https://lore.kernel.org/r/20220208211644.123457-8-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Now that rxe_mcast.c has it's own red-black tree support there is no
longer any requirement for key'ed objects in rxe pools. This patch removes
the key APIs and related code.
Link: https://lore.kernel.org/r/20220208211644.123457-7-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Continuing to decouple mcg from rxe pools. Create red-black tree code in
rxe_mcast.c to hold mcg index. Replace pool key calls by calls to local
red-black routines.
Link: https://lore.kernel.org/r/20220208211644.123457-6-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Replace 'grp' by 'mcg', 'mce' by 'mca'. Shorten subroutine names in
rxe_mcast.c. These name uses are more in line with other object names
used.
Link: https://lore.kernel.org/r/20220208211644.123457-4-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Remove rxe_mca (was rxe_mc_elem) from rxe pools and use kzmalloc and kfree
to allocate and free in rxe_mcast.c. Call kzalloc outside of spinlocks to
avoid having to use GFP_ATOMIC.
Link: https://lore.kernel.org/r/20220208211644.123457-3-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Replace mcg->mcg_lock and mc_grp_pool->pool_lock by rxe->mcg_lock. This
is the first step of several intended to decouple the mc_grp and mc_elem
objects from the rxe pool code.
Link: https://lore.kernel.org/r/20220208211644.123457-2-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
A previous patch replaced all irqsave locks in rxe with bh locks. This
ran into problems because rdmacm has a bad habit of calling rdma verbs
APIs while disabling irqs. This is not allowed during spin_unlock_bh()
causing programs that use rdmacm to fail. This patch reverts the changes
to locks that had this problem or got dragged into the same mess. After
this patch blktests/check -q srp now runs correctly.
Link: https://lore.kernel.org/r/20220215194448.44369-1-rpearsonhpe@gmail.com
Fixes: 21adfa7a3c ("RDMA/rxe: Replace irqsave locks with bh locks")
Reported-by: Guoqing Jiang <guoqing.jiang@linux.dev>
Reported-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Zhu Yanjun <zyjzyj2000@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
It's wrong to check the last packet by RXE_COMP_MASK because the flag is
to indicate if responder needs to generate a completion.
Fixes: 9fcd67d177 ("IB/rxe: increment msn only when completing a request")
Fixes: 8700e3e7c4 ("Soft RoCE driver")
Link: https://lore.kernel.org/r/20211229034438.1854908-1-yangx.jy@fujitsu.com
Signed-off-by: Xiao Yang <yangx.jy@fujitsu.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Code unconditionally resumed fenced SQ processing after next RDMA Read
completion, even if other RDMA Read responses are still outstanding, or
ORQ is full. Also adds comments for better readability of fence
processing, and removes orq_get_tail() helper, which is not needed
anymore.
Fixes: 8b6a361b8c ("rdma/siw: receive path")
Fixes: a531975279 ("rdma/siw: main include file")
Link: https://lore.kernel.org/r/20220130170815.1940-1-bmt@zurich.ibm.com
Reported-by: Jared Holzman <jared.holzman@excelero.com>
Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Since it is no longer required to cleanup attachments to multicast
groups when a QP is destroyed qp->grp_lock and qp->grp_list are
no longer needed and are removed.
Link: https://lore.kernel.org/r/20220127213755.31697-7-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
With o10-2.2.3 enforced rxe_drop_all_mcast_groups is completely
unnecessary. Remove it and references to it.
Link: https://lore.kernel.org/r/20220127213755.31697-6-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Add code to check if a QP is attached to one or more multicast groups
when destroy_qp is called and return an error if so.
Link: https://lore.kernel.org/r/20220127213755.31697-5-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Rename rxe_mc_grp to rxe_mcg. Rename rxe_mc_elem to rxe_mca.
These can be read 'multicast group' and 'multicast attachment'.
'elem' collided with the use of elem in rxe pools and was a little
confusing.
Link: https://lore.kernel.org/r/20220127213755.31697-4-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Move rxe_mcast_attach and rxe_mcast_detach from rxe_verbs.c to rxe_mcast.c,
Make non-static and add declarations to rxe_loc.h. Make the subroutines
in rxe_mcast.c referenced by these routines static and remove their
declarations from rxe_loc.h.
Link: https://lore.kernel.org/r/20220127213755.31697-3-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
