- 11 Feb, 2019 11 commits
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Shiraz, Saleem authored
The driver walks the umem SGL assuming a 1:1 mapping between SGE and system page. Update to use the for_each_sg_page iterator to get individual pages contained in the SGEs. This is a pre-requisite before adding page combining into SGEs while building the scatter table in IB core. Additionally, purge umem->page_shift usage in the driver as its only relevant for ODP MRs. Use system page size and shift instead. Signed-off-by:
Shiraz, Saleem <shiraz.saleem@intel.com> Signed-off-by:
Jason Gunthorpe <jgg@mellanox.com>
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Shiraz, Saleem authored
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped SGL and get the page DMA address. This avoids the extra loop to iterate pages in the SGE when for_each_sg iterator is used. Additionally, purge umem->page_shift usage in the driver as its only relevant for ODP MRs. Use system page size and shift instead. Signed-off-by:
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Shiraz, Saleem authored
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped SGL and get the page DMA address. This avoids the extra loop to iterate pages in the SGE when for_each_sg iterator is used. Additionally, purge umem->page_shift usage in the driver as its only relevant for ODP MRs. Use system page size and shift instead. Signed-off-by:
Michal Kalderon <michal.kalderon@marvell.com> Signed-off-by:
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Shiraz, Saleem authored
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped SGL and get the page DMA address. This avoids the extra loop to iterate pages in the SGE when for_each_sg iterator is used. Additionally, purge umem->page_shift usage in the driver as its only relevant for ODP MRs. Use system page size and shift instead. Signed-off-by:
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Shiraz, Saleem authored
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped SGL and get the page DMA address. This avoids the extra loop to iterate pages in the SGE when for_each_sg iterator is used. Additionally, purge umem->page_shift usage in the driver as its only relevant for ODP MRs. Use system page size and shift instead. Signed-off-by:
Steve Wise <swise@opengridcomputing.com> Signed-off-by:
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Shiraz, Saleem authored
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped SGL and get the page DMA address. This avoids the extra loop to iterate pages in the SGE when for_each_sg iterator is used. Additionally, purge umem->page_shift usage in the driver as its only relevant for ODP MRs. Use system page size and shift instead. Signed-off-by:
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Shiraz, Saleem authored
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped SGL and get the page DMA address. This avoids the extra loop to iterate pages in the SGE when for_each_sg iterator is used. Additionally, purge umem->page_shift usage in the driver as its only relevant for ODP MRs. Use system page size and shift instead. Signed-off-by:
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Shiraz, Saleem authored
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped SGL and get the page DMA address. This avoids the extra loop to iterate pages in the SGE when for_each_sg iterator is used. Additionally, purge umem->page_shift usage in the driver as its only relevant for ODP MRs. Use system page size and shift instead. Signed-off-by:
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Shiraz, Saleem authored
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped SGL and get the page DMA address. This avoids the extra loop to iterate pages in the SGE when for_each_sg iterator is used. Additionally, purge umem->page_shift usage in the driver as its only relevant for ODP MRs. Use system page size and shift instead. Signed-off-by:
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Shiraz, Saleem authored
Use the for_each_sg_dma_page iterator variant to walk the umem DMA-mapped SGL and get the page DMA address. This avoids the extra loop to iterate pages in the SGE when for_each_sg iterator is used. Additionally, purge umem->page_shift usage in the driver as its only relevant for ODP MRs. Use system page size and shift instead. Signed-off-by:
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Jason Gunthorpe authored
Commit 2db76d7c ("lib/scatterlist: sg_page_iter: support sg lists w/o backing pages") introduced the sg_page_iter_dma_address() function without providing a way to use it in the general case. If the sg_dma_len() is not equal to the sg length callers cannot safely use the for_each_sg_page/sg_page_iter_dma_address combination. Resolve this API mistake by providing a DMA specific iterator, for_each_sg_dma_page(), that uses the right length so sg_page_iter_dma_address() works as expected with all sglists. A new iterator type is introduced to provide compile-time safety against wrongly mixing accessors and iterators. Acked-by: Christoph Hellwig <hch@lst.de> (for scatterlist) Acked-by:
Thomas Hellstrom <thellstrom@vmware.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> (ipu3-cio2) Signed-off-by:
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- 09 Feb, 2019 3 commits
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Raju Rangoju authored
When an application aborts the connection by moving QP from RTS to ERROR, then iw_cxgb4's modify_rc_qp() RTS->ERROR logic sets the *srqidxp to 0 via t4_set_wq_in_error(&qhp->wq, 0), and aborts the connection by calling c4iw_ep_disconnect(). c4iw_ep_disconnect() does the following: 1. sends up a close_complete_upcall(ep, -ECONNRESET) to libcxgb4. 2. sends abort request CPL to hw. But, since the close_complete_upcall() is sent before sending the ABORT_REQ to hw, libcxgb4 would fail to release the srqidx if the connection holds one. Because, the srqidx is passed up to libcxgb4 only after corresponding ABORT_RPL is processed by kernel in abort_rpl(). This patch handle the corner-case by moving the call to close_complete_upcall() from c4iw_ep_disconnect() to abort_rpl(). So that libcxgb4 is notified about the -ECONNRESET only after abort_rpl(), and libcxgb4 can relinquish the srqidx properly. Signed-off-by:
Raju Rangoju <rajur@chelsio.com> Signed-off-by:
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Raju Rangoju authored
If TP fetches an SRQ buffer but ends up not using it before the connection is aborted, then it passes the index of that SRQ buffer to the host in ABORT_REQ_RSS or ABORT_RPL CPL message. But, if the srqidx field is zero in the received ABORT_RPL or ABORT_REQ_RSS CPL, then we need to read the tcb.rq_start field to see if it really did have an RQE cached. This works around a case where HW does not include the srqidx in the ABORT_RPL/ABORT_REQ_RSS CPL. The final value of rq_start is the one present in TCB with the TF_RX_PDU_OUT bit cleared. So, we need to read the TCB, examine the TF_RX_PDU_OUT (bit 49 of t_flags) in order to determine if there's a rx PDU feedback event pending. Signed-off-by:
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Raju Rangoju authored
This patch adds the tcb flags and structures needed for querying tcb information. Signed-off-by:
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- 08 Feb, 2019 21 commits
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Jason Gunthorpe authored
The locking here started out with a single lock that covered everything and then has lately veered into crazy town. The fundamental problem is that several places need to iterate over a linked list, but also need to drop their locks to avoid deadlock during client callbacks. xarray's restartable iteration offers a simple solution to the problem. Once all the lists are xarrays we can drop locks in the places that need that and rely on xarray to provide consistency and locking for the data structure. The resulting simplification is that each of the three lists has a dedicated rwsem that must be held when working with the list it covers. One data structure is no longer covered by multiple locks. The sleeping semaphore is selected because the read side generally needs to be held over something sleeping, and using RCU reader locking in those cases is overkill. In the process this simplifies the entire registration/unregistration flow to be the expected list of setups and the reversed list of matching teardowns, and the registration lock 'refcount' can now be revised to be released after the ULPs are removed, providing a very sane semantic for this feature. Signed-off-by: -
Jason Gunthorpe authored
Now that we have a small ID for each client we can use xarray instead of linearly searching linked lists for client data. This will give much faster and scalable client data lookup, and will lets us revise the locking scheme. Since xarray can store 'going_down' using a mark just entirely eliminate the struct ib_client_data and directly store the client_data value in the xarray. However this does require a special iterator as we must still iterate over any NULL client_data values. Also eliminate the client_data_lock in favour of internal xarray locking. Signed-off-by: -
Jason Gunthorpe authored
This gives each client a unique ID and will let us move client_data to use xarray, and revise the locking scheme. clients have to be add/removed in strict FIFO/LIFO order as they interdepend. To support this the client_ids are assigned to increase in FIFO order. The existing linked list is kept to support reverse iteration until xarray can get a reverse iteration API. Signed-off-by:
Parav Pandit <parav@mellanox.com>
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Jason Gunthorpe authored
ida is the proper data structure to hold list of clustered small integers and then allocate an unused integer. Get rid of the convoluted and limited open-coded bitmap. Signed-off-by: -
Jason Gunthorpe authored
This really has no purpose anymore, refcount can be used to tell if the device is still registered. Keeping it around just invites mis-use. Signed-off-by:
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Jason Gunthorpe authored
Instead of complicated logic about when this memory is freed, always free it during device release(). All the cache pointers start out as NULL, so it is safe to call this before the cache is initialized. This makes for a simpler error unwind flow, and a simpler understanding of the lifetime of the memory allocations inside the struct ib_device. Signed-off-by: -
Jason Gunthorpe authored
Since this only frees memory it should be done during the release callback. Otherwise there are possible error flows where it might not get called if registration aborts. Signed-off-by: -
Jason Gunthorpe authored
Since another rename could be running in parallel it is safer to check that the name is not changing inside the lock, where we already know the device name will not change. Fixes: d21943dd ("RDMA/core: Implement IB device rename function") Signed-off-by:
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Leon Romanovsky authored
The PD allocations in IB/core allows us to simplify drivers and their error flows in their .alloc_pd() paths. The changes in .alloc_pd() go hand in had with relevant update in .dealloc_pd(). We will use this opportunity and convert .dealloc_pd() to don't fail, as it was suggested a long time ago, failures are not happening as we have never seen a WARN_ON print. Signed-off-by:
Leon Romanovsky <leonro@mellanox.com> Signed-off-by:
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Leon Romanovsky authored
Add new macros to be used in drivers while registering ops structure and IB/core while calling allocation routines, so drivers won't need to perform kzalloc/kfree in their paths. The change in allocation stage allows us to initialize common fields prior to calling to drivers (e.g. restrack). Signed-off-by:
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Daniel Jurgens authored
When creating many MAD agents in a short period of time, receive packet processing can be delayed long enough to cause timeouts while new agents are being added to the atomic notifier chain with IRQs disabled. Notifier chain registration and unregstration is an O(n) operation. With large numbers of MAD agents being created and destroyed simultaneously the CPUs spend too much time with interrupts disabled. Instead of each MAD agent registering for it's own LSM notification, maintain a list of agents internally and register once, this registration already existed for handling the PKeys. This list is write mostly, so a normal spin lock is used vs a read/write lock. All MAD agents must be checked, so a single list is used instead of breaking them down per device. Notifier calls are done under rcu_read_lock, so there isn't a risk of similar packet timeouts while checking the MAD agents security settings when notified. Signed-off-by:
Daniel Jurgens <danielj@mellanox.com> Reviewed-by:
Paul Moore <paul@paul-moore.com> Signed-off-by:
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Daniel Jurgens authored
Move the security related fields above the u8s to eliminate a hole in the struct. pahole before: struct ib_mad_agent { ... u32 hi_tid; /* 48 4 */ u32 flags; /* 52 4 */ u8 port_num; /* 56 1 */ u8 rmpp_version; /* 57 1 */ /* XXX 6 bytes hole, try to pack */ /* --- cacheline 1 boundary (64 bytes) --- */ void * security; /* 64 8 */ bool smp_allowed; /* 72 1 */ bool lsm_nb_reg; /* 73 1 */ /* XXX 6 bytes hole, try to pack */ struct notifier_block lsm_nb; /* 80 24 */ /* XXX last struct has 4 bytes of padding */ /* size: 104, cachelines: 2, members: 14 */ ... }; pahole after: struct ib_mad_agent { ... u32 hi_tid; /* 48 4 */ u32 flags; /* 52 4 */ void * security; /* 56 8 */ /* --- cacheline 1 boundary (64 bytes) --- */ struct notifier_block lsm_nb; /* 64 24 */ /* XXX last struct has 4 bytes of padding */ u8 port_num; /* 88 1 */ u8 rmpp_version; /* 89 1 */ bool smp_allowed; /* 90 1 */ bool lsm_nb_reg; /* 91 1 */ /* size: 96, cachelines: 2, members: 14 */ ... }; Signed-off-by: -
Daniel Jurgens authored
If the MAD agents isn't allowed to manage the subnet, or fails to register for the LSM notifier, the security context is leaked. Free the context in these cases. Fixes: 47a2b338 ("IB/core: Enforce security on management datagrams") Signed-off-by:
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Daniel Jurgens authored
If the notifier runs after the security context is freed an access of freed memory can occur. Fixes: 47a2b338 ("IB/core: Enforce security on management datagrams") Signed-off-by:
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Parvi Kaustubhi authored
Move the call to usnic_ib_device_remove after usnic_ib_ibdev_list_lock has been released. Signed-off-by:
Parvi Kaustubhi <pkaustub@cisco.com> Signed-off-by:
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Steve Wise authored
When IPv6 support was added, the correct tos was not passed to cxgb_find_route6(). This potentially results in the wrong route entry. Fixes: 830662f6 ("RDMA/cxgb4: Add support for active and passive open connection with IPv6 address") Signed-off-by:
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Steve Wise authored
import_ep() is passed the correct tos, but doesn't use it correctly. Fixes: ac8e4c69 ("cxgb4/iw_cxgb4: TOS support") Signed-off-by:
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Steve Wise authored
If the parent listening endpoint has a service type set, then use that when setting up the connection. This allows server-side applications to mandate the tos for passive side connections via rdma_set_service_type() on the listening endpoints. Signed-off-by:
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Steve Wise authored
This allows drivers to know the tos was actively set by the application. Signed-off-by:
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Steve Wise authored
If a user binds to INADDR_ANY and sets the service id, then the device-specific cm_ids should also use this tos. This allows an app to do: rdma_bind_addr(INADDR_ANY) set_service_type() rdma_listen() And connections setup via this listening endpoint will use the correct tos. Signed-off-by:
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Danit Goldberg authored
Define new option in 'rdma_set_option' to override calculated QP timeout when requested to provide QP attributes to modify a QP. At the same time, pack tos_set to be bitfield. Signed-off-by:
Danit Goldberg <danitg@mellanox.com> Reviewed-by:
Moni Shoua <monis@mellanox.com> Signed-off-by:
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- 07 Feb, 2019 5 commits
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Devesh Sharma authored
Re-enabling RDMA driver support on 57500 chips. Removing the forced error code for 57500 chip. Signed-off-by:
Michael Chan <michael.chan@broadcom.com> Signed-off-by:
Devesh Sharma <devesh.sharma@broadcom.com> Signed-off-by:
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Devesh Sharma authored
User space verbs provider library would need chip context. Changing the ABI to add chip version details in structure. Furthermore, changing the kernel driver ucontext allocation code to initialize the abi structure with appropriate values. As suggested by community, appended the new fields at the bottom of the ABI structure and retaining to older fields as those were in the older versions. Keeping the ABI version at 1 and adding a new field in the ucontext response structure to hold the component mask. The user space library should check pre-defined flags to figure out if a certain feature is supported on not. Signed-off-by:
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Devesh Sharma authored
The new 57500 series of adapter has bigger psn search structure. The size of new structure is 16B. Changing the control path memory allocation and fast path code to accommodate the new psn structure while maintaining the backward compatibility. There are few additional changes listed below: - For 57500 chip max-sge are limited to 6 for now. - For 57500 chip max-receive-sge should be set to 6 for now. - Add driver/hardware interface structure for new chip. Signed-off-by:
Selvin Xavier <selvin.xavier@broadcom.com> Signed-off-by:
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Devesh Sharma authored
In the new 57500 series of adapters the GSI qp is a UD type QP unlike the previous generation where it was a Raw Eth QP. Changing the control and data path to support the same. Listing all the significant diffs: - AH creation resolve network type unconditionally - Add check at relevant places to distinguish from Raw Eth processing flow. - bnxt_re_process_res_ud_wc report completion with GRH flag when qp is GSI. - Change length, cfa_meta and smac to match new driver/hardware interface. - Add new driver/hardware interface. Signed-off-by:
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Devesh Sharma authored
The backing store to keep HW context data structures is allocated and initialized by L2 driver. For 57500 chip RoCE driver do not require to allocate and initialize additional memory. Changing to skip duplicate allocation and initialization for 57500 adapters. Driver continues as before for older chips. This patch also takes care of stats context memory alignment to 128 boundary, a requirement for 57500 series of chip. Older chips do not care of alignment, thus the change is unconditional. Signed-off-by:
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