- 27 Jun, 2017 34 commits
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Michael J. Ruhl authored
Base receive contexts can be used by sub contexts. Because of this, resources for the context cannot be completely freed until all sub contexts are done using the base context. Introduce a reference count so that the base receive context can be freed only when all sub contexts are done with it. Use the provided function call for setting default send context integrity rather than the manual method. The cleanup path does not set all variables back to NULL after freeing resources. Since the clean up code can get called more than once, (e.g. during context close and on the error path), it is necessary to make sure that all the variables are NULLed. Possible crash are: BUG: unable to handle kernel paging request at 0000000001908900 IP: read_csr+0x24/0x30 [hfi1] RIP: 0010:read_csr+0x24/0x30 [hfi1] Call Trace: sc_disable+0x40/0x110 [hfi1] hfi1_file_close+0x16f/0x360 [hfi1] __fput+0xe7/0x210 ____fput+0xe/0x10 or kernel BUG at mm/slub.c:3877! RIP: 0010:kfree+0x14f/0x170 Call Trace: hfi1_free_ctxtdata+0x19a/0x2b0 [hfi1] ? hfi1_user_exp_rcv_grp_free+0x73/0x80 [hfi1] hfi1_file_close+0x20f/0x360 [hfi1] __fput+0xe7/0x210 ____fput+0xe/0x10 Fixes: Commit 62239fc6 ("IB/hfi1: Clean up on context initialization failure") Reviewed-by:
Mike Marciniszyn <mike.marciniszyn@intel.com> Reviewed-by:
Sebastian Sanchez <sebastian.sanchez@intel.com> Signed-off-by:
Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by:
Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by:
Doug Ledford <dledford@redhat.com>
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Michael J. Ruhl authored
The expected receive lists (tid_xxx_list) are not initialized until late in the receive context initialization. If an error happens before the initialization, a NULL pointer access will occur during cleanup. Initialized the lists sooner rather than later to avoid this Oops: IP: unlock_exp_tids.isra.11+0x26/0xd0 [hfi1] RIP: 0010:unlock_exp_tids.isra.11+0x26/0xd0 [hfi1] Call Trace: hfi1_user_exp_rcv_free+0x79/0xb0 [hfi1] hfi1_file_close+0x87/0x360 [hfi1] __fput+0xe7/0x210 ____fput+0xe/0x10 Reviewed-by:
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Michael J. Ruhl authored
pci_enable_msix_range() and pci_disable_msix() have been deprecated. Updating to the new pci_alloc_irq_vectors() interface. Reviewed-by:
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Mike Marciniszyn authored
This patch adds a trace for putting a TID and for writing the RcvArray CSR. The CSR access template can be easily extended for additional CSR readq/writeq calls. Reviewed-by:
Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by:
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Mike Marciniszyn authored
This is the preferred way to add a duplicate trace call. Reviewed-by:
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Jan Sokolowski authored
Currently, platform configuration can be read from EFI variable for discrete cards. It will happen when reading from EPROM fails. EFI variables should not be queried for platform configuration in any scenario. Reviewed-by:
Jakub Byczkowski <jakub.byczkowski@intel.com> Signed-off-by:
Jan Sokolowski <jan.sokolowski@intel.com> Signed-off-by:
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Mike Marciniszyn authored
Declarations and code in common between verbs and PSM are now moved to exp_rcv.[ch]. Reviewed-by:
Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by:
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Jan Sokolowski authored
Change QSFP cable error events logging levels from info to error. Reviewed-by:
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Bartlomiej Dudek authored
Fix info array of host message flags by adding entry for link width downgrade and reverse values for BC SMA and BC PWR_MSG messages Reviewed-by:
Bartlomiej Dudek <bartlomiej.dudek@intel.com> Signed-off-by:
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Dennis Dalessandro authored
According to IBTA spec a QKey violation should not result in a bad qkey trap being triggered for UD queue pairs. Also since it is a silent error we do not increment the q_key violation or the dropped packet counters. Reviewed-by:
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Byczkowski, Jakub authored
Ensure states returned to the Fabric Manager are consistent with the OPA specification by caching the physical state along with the logical state. Reviewed-by:
Stuart Summers <john.s.summers@intel.com> Reviewed-by:
Ira Weiny <ira.weiny@intel.com> Reviewed-by:
Andrzej Kotlowski <andrzej.kotlowski@intel.com> Signed-off-by:
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Tadeusz Struk authored
Playing with IP-O-IB interface can trigger a warning message: "ib0: Failed to modify QP to ERROR state" to be logged. This happens when the QP is in IB_QPS_RESET state and the stack is trying to transition it to IB_QPS_ERR state in ipoib_ib_dev_stop(). According to the IB spec, Table 91 - "QP State Transition Properties" it looks like the transition from reset to error is valid: Transition: Any State to Error Required Attributes: None Optional Attributes: None allowed Actions: Queue processing is stopped. Work Requests pending or in process are completed in error, when possible. This patch allows the transition and quiets the message. Reviewed-by:
Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by:
Leon Romanovsky <leonro@mellanox.com> Signed-off-by:
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Neel Desai authored
Improve safety of code by checking the size of the data buffer and prevent buffer overrun Reviewed-by:
Brian Welty <brian.welty@intel.com> Signed-off-by:
Neel Desai <neel.desai@intel.com> Signed-off-by:
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Dennis Dalessandro authored
In process_receive_packet the packet header field is used to calculate the length of the packet. However this is not necessarily setup. In fact only if the ECN prescan is enabled will the packet header be valid at this point. The code works as is because we do not do anything with the packet length at this point in the packet processing. The length and header are setup correctly in hfi1_setup_ib_header which is called by the following sequence: process_receive_packet() -> rhf_receieve_function_map[]() --> process_receive_ib() ---> hfi1_setup_9B_packet() ----> hfi1_setup_ib_header() Reviewed-by:
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Dennis Dalessandro authored
Ensure we can't come up with an array size that is bigger than the array by applying the QPN mask before the divide in the free_qpn function. Reviewed-by:
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Dennis Dalessandro authored
Spell receive correctly in OPA_LINKDOWN_REASON_RCV_ERROR Reviewed-by:
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Dennis Dalessandro authored
As the code stands today the array access in remap_intr() is OK. To future proof the code though we should explicitly check to ensure the index value is not outside of the valid range. This is not a straight forward calculation so err on the side of caution. Reviewed-by:
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Dennis Dalessandro authored
The free_qpn() function from the hfi1/qib driver which was the basis for rdmavt_free_qpn() function was accidentally left in the code. Remove it. Reviewed-by:
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Ira Weiny authored
sdma_init does not take a number of sdma engine parameters, rather it initializes all of the sdma engines. Signed-off-by:
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Sebastian Sanchez authored
Reclassify messages printed out to /var/log/messages into warnings and errors to facilitate debugging in the future for issues related to the platform config logic. Reviewed-by:
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Sebastian Sanchez authored
Atomic bit tests are used to single errors and the completion of request submissions. These operations don't need to be atomic and show to be expensive on the profile. Replace each atomic bit operation with a bool type and a READ_ONCE/WRITE_ONCE pairing. Reviewed-by:
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Sebastian Sanchez authored
The atomic SDMA_REQ_SEND_DONE bit is set by the process-level code, and then the same process-level code uses the bit to test that all packets have been submitted incurring a costly atomic read. Use a bool type with a READ_ONCE/WRITE_ONCE pairing for this bit, and use the same condition that is used to set the bit to test that all packets have been submitted. Reviewed-by:
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Vishwanathapura, Niranjana authored
Provide the ability for IB clients to modify the OPA specific capability mask and include this mask in the subsequent trap data. Reviewed-by:
Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> Signed-off-by:
Michael N. Henry <michael.n.henry@intel.com> Signed-off-by:
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Michael J. Ruhl authored
pci_enable_msix_range() and pci_disable_msix() have been deprecated. Updating to the new pci_alloc_irq_vectors() interface. Reviewed-by:
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Michael J. Ruhl authored
To improve the readability of function prototypes, give the parameters names in the affinity module. Reviewed-by:
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Sebastian Sanchez authored
The current user SDMA request structure layout has holes. The cachelines can be reduced to improve cacheline trading. Separate fields in the following categories: mostly read, writable and shared with interrupt. Reviewed-by:
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Sebastian Sanchez authored
An RB tree is used for the SDMA pinning cache. Cache entries are extracted and reinserted from the tree in case the address range for it changes. However, if the address range for the entry doesn't change, deleting the entry from the RB tree is not necessary. This affects performance since the tree needs to be rebalanced for each insertion, and this happens in the hot path. Optimize RB search by not removing entries when it's not needed. Reviewed-by:
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Mike Marciniszyn authored
SGEs that are contiguous needlessly consume driver dependent TX resources. The lkey validation logic is enhanced to compress the SGE that ends up in the send wqe when consecutive addresses are detected. The lkey validation API used to return 1 (success) or 0 (fail). The return value is now an -errno, 0 (compressed), or 1 (uncompressed). A additional argument is added to pass the last SQE for the compression. Loopback callers always pass a NULL to last_sge since the optimization is of little benefit in that situation. Reviewed-by:
Venkata Sandeep Dhanalakota <venkata.s.dhanalakota@intel.com> Signed-off-by:
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Don Hiatt authored
We move many common IB fields into the hfi1_packet structure and set them up in a single function. This allows us to set the fields in a single place and not deal with them throughout the driver. Reviewed-by:
Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Reviewed-by:
Don Hiatt <don.hiatt@intel.com> Signed-off-by:
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Don Hiatt authored
Calls to trace incoming packets will now receive the packet context as parameter. This enables trace support for future packet types. Header trace output is in the format <field>:<value> which makes parsing easier. input_ibhdr trace before change: <idle>-0 [001] d.h. 5904.250925: input_ibhdr: [0000:05:00.0] vl 0 lver 0 sl 0 lnh 2,LRH_BTH dlid 0002 len 18 slid 0001 op 0x64,UD_SEND_ONLY se 0 m 0 pad 0 tver 0 pkey 0xffff f 0 b 0 qpn 0x000001 a 0 psn 0x000001b2 deth qkey 0x80010000 sqpn 0x000001 input_ibhdr trace after change: <idle>-0 [001] d.h. 6655.714488: input_ibhdr: [0000:05:00.0] (IB) len:124 sc:0 dlid:0x0001 slid:0x0002 lnh:2,LRH_BTH lver:0 sl:0 age:0 becn:0 fecn:0 l4:0 rc:0 entropy:0 op:0x64,UD_SEND_ONLY se:0 m:0 pad:0 tver:0 pkey:0x7fff f:0 b:0 qpn:0x000001 a:0 psn:0x00000036 hlen:8 deth qkey:0x80010000 sqpn:0x000001 Reviewed-by:
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Don Hiatt authored
Improve code readablity by adding inline functions to read specific BTH/IB fields without knowledge of byte offsets. Reviewed-by:
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Ira Weiny authored
Leftover function that is not used. Remove it. Reviewed-by:
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Sebastian Sanchez authored
The tx request is unnecessarily initialized in the hot code path with memset(), however, there's no need to do this as most fields are initialized later on. this initialization shows to be costly in the profile. Remove unnecessary initialization from tx request and make sure all variables are initialized properly. Reviewed-by:
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Doug Ledford authored
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- 16 Jun, 2017 2 commits
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Saeed Mahameed authored
Avoid touching RX QP RSS context when loading with only one RX ring, to allow optimized A0 RX steering. Enable by: - loading mlx4_core with module param: log_num_mgm_entry_size = -6. - then: ethtool -L <interface> rx 1 Performance tests: Tested on ConnectX3Pro, Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz XDP_DROP packet rate: ------------------------------------- | Before | After | Gain | IPv4 | 20.5 Mpps | 28.1 Mpps | 37% | IPv6 | 18.4 Mpps | 28.1 Mpps | 53% | ------------------------------------- Signed-off-by:Saeed Mahameed <saeedm@mellanox.com> Signed-off-by:
Tariq Toukan <tariqt@mellanox.com> Cc: kernel-team@fb.com Cc: Eric Dumazet <edumazet@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Tariq Toukan authored
Remove owner argument, as it is obsolete and unused. This also saves the overhead of calculating its value in data-path. Signed-off-by:
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- 15 Jun, 2017 4 commits
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Gustavo A. R. Silva authored
Value assigned to variable _data32_ at lines 1254 and 1257 is overwritten at line 1260 before it can be used. This makes such variable assignments useless. Addresses-Coverity-ID: 1227049 Signed-off-by:
Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by:
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Vivien Didelot authored
The current code only assigns the default cpu_dp to all user ports of the switch to which the CPU port belongs. The user ports of the other switches of the fabric thus don't have a default CPU port. This patch fixes this by assigning the cpu_dp of all user ports of all switches of the fabric when the tree is fully parsed. Fixes: a29342e7 ("net: dsa: Associate slave network device with CPU port") Signed-off-by:
Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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David S. Miller authored
Hayes Wang says: ==================== r8152: support new chips These patches are used to support new chips. ==================== Signed-off-by: -
hayeswang authored
Add byte_enable for ocp_read_word() to replace reading 4 bytes data with reading the desired 2 bytes data. This is used to avoid the issue which is described in commit b4d99def ("r8152: remove sram_read"). The original method always reads 4 bytes data, and it may have problem when reading the PHY registers. The new method is supported since RTL8153B, but it doesn't influence the previous chips. The bits of the byte_enable for the previous chips are the reserved bits, and the hw would ignore them. Signed-off-by:
Hayes Wang <hayeswang@realtek.com> Signed-off-by:
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