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* mlx4_core: Allow choosing flow steering modeJack Morgenstein2012-12-191-0/+1
| | | | | | | | | | | | Device managed flow steering will be enabled only under administrator directive provided through setting the existing module parameter log_num_mgm_entry_size to -1 (if the device actually supports flow steering). If flow steering isn't requested or not available, the driver will use the value of log_num_mgm_entry_size and B0 steering. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* mlx4: 64-byte CQE/EQE supportOr Gerlitz2012-11-261-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ConnectX-3 devices can use either 64- or 32-byte completion queue entries (CQEs) and event queue entries (EQEs). Using 64-byte EQEs/CQEs performs better because each entry is aligned to a complete cacheline. This patch queries the HCA's capabilities, and if it supports 64-byte CQEs and EQES the driver will configure the HW to work in 64-byte mode. The 32-byte vs 64-byte mode is global per HCA and not per CQ or EQ. Since this mode is global, userspace (libmlx4) must be updated to work with the configured CQE size, and guests using SR-IOV virtual functions need to know both EQE and CQE size. In case one of the 64-byte CQE/EQE capabilities is activated, the patch makes sure that older guest drivers that use the QUERY_DEV_FUNC command (e.g as done in mlx4_core of Linux 3.3..3.6) will notice that they need an update to be able to work with the PPF. This is done by changing the returned pf_context_behaviour not to be zero any more. In case none of these capabilities is activated that value remains zero and older guest drivers can run OK. The SRIOV related flow is as follows 1. the PPF does the detection of the new capabilities using QUERY_DEV_CAP command. 2. the PPF activates the new capabilities using INIT_HCA. 3. the VF detects if the PPF activated the capabilities using QUERY_HCA, and if this is the case activates them for itself too. Note that the VF detects that it must be aware to the new PF behaviour using QUERY_FUNC_CAP. Steps 1 and 2 apply also for native mode. User space notification is done through a new field introduced in struct mlx4_ib_ucontext which holds device capabilities for which user space must take action. This changes the binary interface so the ABI towards libmlx4 exposed through uverbs is bumped from 3 to 4 but only when **needed** i.e. only when the driver does use 64-byte CQEs or future device capabilities which must be in sync by user space. This practice allows to work with unmodified libmlx4 on older devices (e.g A0, B0) which don't support 64-byte CQEs. In order to keep existing systems functional when they update to a newer kernel that contains these changes in VF and userspace ABI, a module parameter enable_64b_cqe_eqe must be set to enable 64-byte mode; the default is currently false. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* mlx4: Modify proxy/tunnel QP mechanism so that guests do no calculationsJack Morgenstein2012-09-301-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, the structure of a guest's proxy QPs followed the structure of the PPF special qps (qp0 port 1, qp0 port 2, qp1 port 1, qp1 port 2, ...). The guest then did offset calculations on the sqp_base qp number that the PPF passed to it in QUERY_FUNC_CAP(). This is now changed so that the guest does no offset calculations regarding proxy or tunnel QPs to use. This change frees the PPF from needing to adhere to a specific order in allocating proxy and tunnel QPs. Now QUERY_FUNC_CAP provides each port individually with its proxy qp0, proxy qp1, tunnel qp0, and tunnel qp1 QP numbers, and these are used directly where required (with no offset calculations). To accomplish this change, several fields were added to the phys_caps structure for use by the PPF and by non-SR-IOV mode: base_sqpn -- in non-sriov mode, this was formerly sqp_start. base_proxy_sqpn -- the first physical proxy qp number -- used by PPF base_tunnel_sqpn -- the first physical tunnel qp number -- used by PPF. The current code in the PPF still adheres to the previous layout of sqps, proxy-sqps and tunnel-sqps. However, the PPF can change this layout without affecting VF or (paravirtualized) PF code. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* mlx4: Paravirtualize Node Guids for slavesJack Morgenstein2012-09-301-0/+2
| | | | | | | | This is necessary in order to support > 1 VF/PF in a VM for software that uses the node guid as a discriminator, such as librdmacm. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* mlx4: Activate SR-IOV mode for IBJack Morgenstein2012-09-301-0/+4
| | | | | | | | | | | Remove the error returns for IB ports from mlx4_ib_add, mlx4_INIT_PORT_wrapper, and mlx4_CLOSE_PORT_wrapper. Currently, SRIOV is supported only for devices for which the link layer is IB on all ports; RoCE support will be added later. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* net/mlx4_core: Adjustments to SET_PORT for IB SR-IOVJack Morgenstein2012-09-301-0/+5
| | | | | | | | 1. Slaves may not set the IS_SM capability for the port. 2. DEV_MGMT may not be set in multifunction mode. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* mlx4_core: Add IB port-state machine and port mgmt event propagationJack Morgenstein2012-09-301-0/+28
| | | | | | | | | | | | | For an IB port, a slave should not show port active until that slave has a valid alias-guid (provided by the subnet manager). Therefore the port-up event should be passed to a slave only after both the port is up, and the slave's alias-guid has been set. Also, provide the infrastructure for propagating port-management events (client-reregister, etc) to slaves. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* mlx4: Implement QP paravirtualization and maintain phys_pkey_cache for smp_snoopJack Morgenstein2012-09-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This requires: 1. Replacing the paravirtualized P_Key index (inserted by the guest) with the real P_Key index. 2. For UD QPs, placing the guest's true source GID index in the address path structure mgid field, and setting the ud_force_mgid bit so that the mgid is taken from the QP context and not from the WQE when posting sends. 3. For UC and RC QPs, placing the guest's true source GID index in the address path structure mgid field. 4. For tunnel and proxy QPs, setting the Q_Key value reserved for that proxy/tunnel pair. Since not all the above adjustments occur in all the QP transitions, the QP transitions require separate wrapper functions. Secondly, initialize the P_Key virtualization table to its default values: Master virtualized table is 1-1 with the real P_Key table, guest virtualized table has P_Key index 0 mapped to the real P_Key index 0, and all the other P_Key indices mapped to the reserved (invalid) P_Key at index 127. Finally, add logic in smp_snoop for maintaining the phys_P_Key_cache. and generating events on the master only if a P_Key actually changed. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* IB/mlx4: Initialize SR-IOV IB support for slaves in master contextJack Morgenstein2012-09-302-1/+4
| | | | | | | | | | | | | | | | | | | | | | | Allocate SR-IOV paravirtualization resources and MAD demuxing contexts on the master. This has two parts. The first part is to initialize the structures to contain the contexts. This is done at master startup time in mlx4_ib_init_sriov(). The second part is to actually create the tunneling resources required on the master to support a slave. This is performed the master detects that a slave has started up (MLX4_DEV_EVENT_SLAVE_INIT event generated when a slave initializes its comm channel). For the master, there is no such startup event, so it creates its own tunneling resources when it starts up. In addition, the master also creates the real special QPs. The ib_core layer on the master causes creation of proxy special QPs, since the master is also paravirtualized at the ib_core layer. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* mlx4_core: Add proxy and tunnel QPs to the reserved QP areaJack Morgenstein2012-09-301-1/+12
| | | | | | | | In addition, pass the proxy and tunnel QP numbers to slaves so the driver can perform special QP paravirtualization. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP supportJack Morgenstein2012-09-302-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Introduce the basic SR-IOV parvirtualization context objects for multiplexing and demultiplexing MADs. 2. Introduce support for the new proxy and tunnel QP types. This patch introduces the objects required by the master for managing QP paravirtualization for guests. struct mlx4_ib_sriov is created by the master only. It is a container for the following: 1. All the info required by the PPF to multiplex and de-multiplex MADs (including those from the PF). (struct mlx4_ib_demux_ctx demux) 2. All the info required to manage alias GUIDs (i.e., the GUID at index 0 that each guest perceives. In fact, this is not the GUID which is actually at index 0, but is, in fact, the GUID which is at index[<VF number>] in the physical table. 3. structures which are used to manage CM paravirtualization 4. structures for managing the real special QPs when running in SR-IOV mode. The real SQPs are controlled by the PPF in this case. All SQPs created and controlled by the ib core layer are proxy SQP. struct mlx4_ib_demux_ctx contains the information per port needed to manage paravirtualization: 1. All multicast paravirt info 2. All tunnel-qp paravirt info for the port. 3. GUID-table and GUID-prefix for the port 4. work queues. struct mlx4_ib_demux_pv_ctx contains all the info for managing the paravirtualized QPs for one slave/port. struct mlx4_ib_demux_pv_qp contains the info need to run an individual QP (either tunnel qp or real SQP). Note: We made use of the 2 most significant bits in enum mlx4_ib_qp_flags (based on enum ib_qp_create_flags in ib_verbs.h). We need these bits in the low-level driver for internal purposes. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* net/mlx4_core: Add security check / enforcement for flow steering rules set ↵Hadar Hen Zion2012-09-071-0/+11
| | | | | | | | | | | | | for VMs Since VFs may be mapped to VMs which aren't trusted entities, flow steering rules attached through the wrapper on behalf of VFs must be checked to make sure that their L2 specification relate to MAC address assigned to that VF, and add L2 specification if its missing. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_core: Put Firmware flow steering structures in common header filesHadar Hen Zion2012-09-071-0/+2
| | | | | | | | | To allow for usage of the flow steering Firmware structures in more locations over the driver, such as the resource tracker, move them from mcg.c to common header files. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge tag 'rdma-for-3.6' of ↵Linus Torvalds2012-07-242-2/+120
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband Pull InfiniBand/RDMA changes from Roland Dreier: - Updates to the qib low-level driver - First chunk of changes for SR-IOV support for mlx4 IB - RDMA CM support for IPv6-only binding - Other misc cleanups and fixes Fix up some add-add conflicts in include/linux/mlx4/device.h and drivers/net/ethernet/mellanox/mlx4/main.c * tag 'rdma-for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (30 commits) IB/qib: checkpatch fixes IB/qib: Add congestion control agent implementation IB/qib: Reduce sdma_lock contention IB/qib: Fix an incorrect log message IB/qib: Fix QP RCU sparse warnings mlx4: Put physical GID and P_Key table sizes in mlx4_phys_caps struct and paravirtualize them mlx4_core: Allow guests to have IB ports mlx4_core: Implement mechanism for reserved Q_Keys net/mlx4_core: Free ICM table in case of error IB/cm: Destroy idr as part of the module init error flow mlx4_core: Remove double function declarations IB/mlx4: Fill the masked_atomic_cap attribute in query device IB/mthca: Fill in sq_sig_type in query QP IB/mthca: Warning about event for non-existent QPs should show event type IB/qib: Fix sparse RCU warnings in qib_keys.c net/mlx4_core: Initialize IB port capabilities for all slaves mlx4: Use port management change event instead of smp_snoop IB/qib: RCU locking for MR validation IB/qib: Avoid returning EBUSY from MR deregister IB/qib: Fix UC MR refs for immediate operations ...
| * mlx4: Put physical GID and P_Key table sizes in mlx4_phys_caps struct and ↵Jack Morgenstein2012-07-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | paravirtualize them To allow easy paravirtualization of P_Key and GID table sizes, keep paravirtualized sizes in mlx4_dev->caps, but save the actual physical sizes from FW in struct: mlx4_dev->phys_cap. In addition, in SR-IOV mode, do the following: 1. Reduce reported P_Key table size by 1. This is done to reserve the highest P_Key index for internal use, for declaring an invalid P_Key in P_Key paravirtualization. We require a P_Key index which always contain an invalid P_Key value for this purpose (i.e., one which cannot be modified by the subnet manager). The way to do this is to reduce the P_Key table size reported to the subnet manager by 1, so that it will not attempt to access the P_Key at index #127. 2. Paravirtualize the GID table size to 1. Thus, each guest sees only a single GID (at its paravirtualized index 0). In addition, since we are paravirtualizing the GID table size to 1, we add paravirtualization of the master GID event here (i.e., we do not do ib_dispatch_event() for the GUID change event on the master, since its (only) GUID never changes). Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
| * mlx4_core: Implement mechanism for reserved Q_KeysJack Morgenstein2012-07-111-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SR-IOV special QP tunneling mechanism uses proxy special QPs (instead of the real special QPs) for MADs on guests. These proxy QPs send their packets to a "tunnel" QP owned by the master. The master then forwards the MAD (after any required paravirtualization) to the real special QP, which sends out the MAD. For security reasons (i.e., to prevent guests from sending MADs to tunnel QPs belonging to other guests), each proxy-tunnel QP pair is assigned a unique, reserved, Q_Key. These Q_Keys are available only for proxy and tunnel QPs -- if the guest tries to use these Q_Keys with other QPs, it will fail. This patch introduces a mechanism for reserving a block of 64K Q_Keys for proxy/tunneling use. The patch introduces also two new fields into mlx4_dev: base_sqpn and base_tunnel_sqpn. In SR-IOV mode, the QP numbers for the "real," proxy, and tunnel sqps are added to the reserved QPN area (so that they will not change). There are 8 special QPs per port in the HCA, and each of them is assigned both a proxy and a tunnel QP, for each VF and for the PF as well in SR-IOV mode. The QPNs for these QPs are arranged as follows: 1. The real SQP numbers (8) 2. The proxy SQPs (8 * (max number of VFs + max number of PFs) 3. The tunnel SQPs (8 * (max number of VFs + max number of PFs) To support these QPs, two new fields are added to struct mlx4_dev: base_sqp: this is the QP number of the first of the real SQPs base_tunnel_sqp: this is the qp number of the first qp in the tunnel sqp region. (On guests, this is the first tunnel sqp of the 8 which are assigned to that guest). In addition, in SR-IOV mode, sqp_start is the number of the first proxy SQP in the proxy SQP region. (In guests, this is the first proxy SQP of the 8 which are assigned to that guest) Note that in non-SR-IOV mode, there are no proxies and no tunnels. In this case, sqp_start is set to sqp_base -- which minimizes code changes. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| * net/mlx4_core: Initialize IB port capabilities for all slavesJack Morgenstein2012-07-101-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With IB SR-IOV, each slave has its own separate copy of the port capabilities flags. For example, the master can run a subnet manager (which causes the IsSM bit to be set in the master's port capabilities) without affecting the port capabilities seen by the slaves (the IsSM bit will be seen as cleared in the slaves). Also add a static inline mlx4_master_func_num() to enhance readability of the code. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| * mlx4: Use port management change event instead of smp_snoopJack Morgenstein2012-07-102-2/+100
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The port management change event can replace smp_snoop. If the capability bit for this event is set in dev-caps, the event is used (by the driver setting the PORT_MNG_CHG_EVENT bit in the async event mask in the MAP_EQ fw command). In this case, when the driver passes incoming SMP PORT_INFO SET mads to the FW, the FW generates port management change events to signal any changes to the driver. If the FW generates these events, smp_snoop shouldn't be invoked in ib_process_mad(), or duplicate events will occur (once from the FW-generated event, and once from smp_snoop). In the case where the FW does not generate port management change events smp_snoop needs to be invoked to create these events. The flow in smp_snoop has been modified to make use of the same procedures as in the fw-generated-event event case to generate the port management events (LID change, Client-rereg, Pkey change, and/or GID change). Port management change event handling required changing the mlx4_ib_event and mlx4_dispatch_event prototypes; the "param" argument (last argument) had to be changed to unsigned long in order to accomodate passing the EQE pointer. We also needed to move the definition of struct mlx4_eqe from net/mlx4.h to file device.h -- to make it available to the IB driver, to handle port management change events. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| * mlx4_core: Pass an invalid PCI id number to VFsJack Morgenstein2012-07-081-0/+2
| | | | | | | | | | | | | | | | | | | | Currently, VFs have 0 in their dev->caps.function field. This is a valid pci id (usually of the PF). Instead, pass an invalid PCI id to the VF via QUERY_FW, so that if the value gets accessed in the VF driver, we'll catch the problem. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | {NET,IB}/mlx4: Add rmap support to mlx4_assign_eqAmir Vadai2012-07-191-1/+3
| | | | | | | | | | | | | | | | | | Enable callers of mlx4_assign_eq to supply a pointer to cpu_rmap. If supplied, the assigned IRQ is tracked using rmap infrastructure. Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net/mlx4: Move MAC_MASK to a common placeAmir Vadai2012-07-191-0/+2
| | | | | | | | | | | | | | | | Define this macro is one common place instead of duplicating it over the code Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net/mlx4: Implement promiscuous mode with device managed flow-steeringHadar Hen Zion2012-07-071-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The device managed flow steering API has three promiscuous modes: 1. Uplink - captures all the packets that arrive to the port. 2. Allmulti - captures all multicast packets arriving to the port. 3. Function port - for future use, this mode is not implemented yet. Use these modes with the flow_attach and flow_detach firmware commands according to the promiscuous state of the netdevice. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | {NET, IB}/mlx4: Add device managed flow steering firmware APIHadar Hen Zion2012-07-071-5/+103
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver is modified to support three operation modes. If supported by firmware use the device managed flow steering API, that which we call device managed steering mode. Else, if the firmware supports the B0 steering mode use it, and finally, if none of the above, use the A0 steering mode. When the steering mode is device managed, the code is modified such that L2 based rules set by the mlx4_en driver for Ethernet unicast and multicast, and the IB stack multicast attach calls done through the mlx4_ib driver are all routed to use the device managed API. When attaching rule using device managed flow steering API, the firmware returns a 64 bit registration id, which is to be provided during detach. Currently the firmware is always programmed during HCA initialization to use standard L2 hashing. Future work should be done to allow configuring the flow-steering hash function with common, non proprietary means. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net/mlx4_core: Add firmware commands to support device managed flow steeringHadar Hen Zion2012-07-071-0/+4
| | | | | | | | | | | | | | | | | | | | | | Add support for firmware commands to attach/detach a new device managed steering mode. Such network steering rules allow the user to provide an L2/L3/L4 flow specification to the firmware and have the device to steer traffic that matches that specification to the provided QP. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net/mlx4: Set steering mode according to device capabilitiesHadar Hen Zion2012-07-071-0/+24
|/ | | | | | | | | | | | | | | | | | | | | | | Instead of checking the firmware supported steering mode in various places in the code, add a dedicated field in the mlx4 device capabilities structure which is written once during the initialization flow and read across the code. This also set the grounds for add new steering modes. Currently two modes are supported, and are named after the ConnectX HW versions A0 and B0. A0 steering uses mac_index, vlan_index and priority to steer traffic into pre-defined range of QPs. B0 steering uses Ethernet L2 hashing rules and is enabled only if the firmware supports both unicast and multicast B0 steering, The current steering modes are relevant for Ethernet traffic only, such that Infiniband steering remains untouched. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_core: Fix number of EQs used in ICM initialisationMarcel Apfelbaum2012-05-311-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In SRIOV mode, the number of EQs used when computing the total ICM size was incorrect. To fix this, we do the following: 1. We add a new structure to mlx4_dev, mlx4_phys_caps, to contain physical HCA capabilities. The PPF uses the phys capabilities when it computes things like ICM size. The dev_caps structure will then contain the paravirtualized values, making bookkeeping much easier in SRIOV mode. We add a structure rather than a single parameter because there will be other fields in the phys_caps. The first field we add to the mlx4_phys_caps structure is num_phys_eqs. 2. In INIT_HCA, when running in SRIOV mode, the "log_num_eqs" parameter passed to the FW is the number of EQs per VF/PF; each function (PF or VF) has this number of EQs available. However, the total number of EQs which must be allowed for in the ICM is (1 << log_num_eqs) * (#VFs + #PFs). Rather than compute this quantity, we allocate ICM space for 1024 EQs (which is the device maximum number of EQs, and which is the value we place in the mlx4_phys_caps structure). For INIT_HCA, however, we use the per-function number of EQs as described above. Signed-off-by: Marcel Apfelbaum <marcela@dev.mellanox.co.il> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge tag 'rdma-for-3.5' of ↵Linus Torvalds2012-05-212-1/+10
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband Pull InfiniBand/RDMA changes from Roland Dreier: - Add ocrdma hardware driver for Emulex IB-over-Ethernet adapters - Add generic and mlx4 support for "raw" QPs: allow suitably privileged applications to send and receive arbitrary packets directly to/from the hardware - Add "doorbell drop" handling to the cxgb4 driver - A fairly large batch of qib hardware driver changes - A few fixes for lockdep-detected issues - A few other miscellaneous fixes and cleanups Fix up trivial conflict in drivers/net/ethernet/emulex/benet/be.h. * tag 'rdma-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (53 commits) RDMA/cxgb4: Include vmalloc.h for vmalloc and vfree IB/mlx4: Fix mlx4_ib_add() error flow IB/core: Fix IB_SA_COMP_MASK macro IB/iser: Fix error flow in iser ep connection establishment IB/mlx4: Increase the number of vectors (EQs) available for ULPs RDMA/cxgb4: Add query_qp support RDMA/cxgb4: Remove kfifo usage RDMA/cxgb4: Use vmalloc() for debugfs QP dump RDMA/cxgb4: DB Drop Recovery for RDMA and LLD queues RDMA/cxgb4: Disable interrupts in c4iw_ev_dispatch() RDMA/cxgb4: Add DB Overflow Avoidance RDMA/cxgb4: Add debugfs RDMA memory stats cxgb4: DB Drop Recovery for RDMA and LLD queues cxgb4: Common platform specific changes for DB Drop Recovery cxgb4: Detect DB FULL events and notify RDMA ULD RDMA/cxgb4: Drop peer_abort when no endpoint found RDMA/cxgb4: Always wake up waiters in c4iw_peer_abort_intr() mlx4_core: Change bitmap allocator to work in round-robin fashion RDMA/nes: Don't call event handler if pointer is NULL RDMA/nes: Fix for the ORD value of the connecting peer ...
| * mlx4_core: Add second capabilities flags fieldShlomo Pongratz2012-05-081-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a 64-bit flags2 features member to struct mlx4_dev to export further features of the hardware. The original flags field tracks features whose support bits are advertised by the firmware in offsets 0x40 and 0x44 of the query device capabilities command. flags2 will track features whose support bits are scattered at various offsets. RSS support is the first feature to be exported through flags2. RSS capabilities are located at offset 0x2e. The size of the RSS indirection table is also given in this offset. Signed-off-by: Shlomo Pongratz <shlomop@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| * IB/mlx4: Put priority bits in WQE of IBoE MLX QPOren Duer2012-05-081-1/+2
| | | | | | | | | | | | | | | | | | | | | | Otherwise CM packets going over MLX QP1 get fixed scheduling priority 0. We want CM packets to get the same scheduling priority, and therefore map to the same SQ (Schedule Queue) and eventually TC (Traffic Class), as the application requested for the actual QP used for the connection. Signed-off-by: Oren Duer <oren@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | net/mlx4_core: set port QoS attributesAmir Vadai2012-04-052-0/+7
| | | | | | | | | | | | | | | | | | Adding QoS firmware commands: - mlx4_en_SET_PORT_PRIO2TC - set UP <=> TC - mlx4_en_SET_PORT_SCHEDULER - set promised BW, max BW and PG number Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | net/mlx4_en: Force user priority by QP attributeAmir Vadai2012-04-051-1/+2
|/ | | | | | | | | | | | | | | | | | | Instead of relying on HW to change schedule queue by UP, schedule queue is fixed for a tx_ring, and UP in WQE is ignored in this aspect. This resolves two issues with untagged traffic: 1. untagged traffic has no UP in packet which is needed for QoS. The change above allows setting the schedule queue (and by that the UP) of such a stream. 2. BlueFlame uses the same field used by vlan tag. So forcing UP from QPC allows using BF for untagged but prioritized traffic. In old firmware that force UP is not supported, untagged traffic will not subject to QoS. Because UP is set by QP, need to always have a tx ring per UP, even if pfcrx module paramter is false. Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge tag 'device-for-3.4' of ↵Linus Torvalds2012-03-241-1/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux Pull <linux/device.h> avoidance patches from Paul Gortmaker: "Nearly every subsystem has some kind of header with a proto like: void foo(struct device *dev); and yet there is no reason for most of these guys to care about the sub fields within the device struct. This allows us to significantly reduce the scope of headers including headers. For this instance, a reduction of about 40% is achieved by replacing the include with the simple fact that the device is some kind of a struct. Unlike the much larger module.h cleanup, this one is simply two commits. One to fix the implicit <linux/device.h> users, and then one to delete the device.h includes from the linux/include/ dir wherever possible." * tag 'device-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: device.h: audit and cleanup users in main include dir device.h: cleanup users outside of linux/include (C files)
| * device.h: audit and cleanup users in main include dirPaul Gortmaker2012-03-161-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The <linux/device.h> header includes a lot of stuff, and it in turn gets a lot of use just for the basic "struct device" which appears so often. Clean up the users as follows: 1) For those headers only needing "struct device" as a pointer in fcn args, replace the include with exactly that. 2) For headers not really using anything from device.h, simply delete the include altogether. 3) For headers relying on getting device.h implicitly before being included themselves, now explicitly include device.h 4) For files in which doing #1 or #2 uncovers an implicit dependency on some other header, fix by explicitly adding the required header(s). Any C files that were implicitly relying on device.h to be present have already been dealt with in advance. Total removals from #1 and #2: 51. Total additions coming from #3: 9. Total other implicit dependencies from #4: 7. As of 3.3-rc1, there were 110, so a net removal of 42 gives about a 38% reduction in device.h presence in include/* Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* | Merge tag 'rdma-for-linus' of ↵Linus Torvalds2012-03-211-5/+7
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband Pull InfiniBand/RDMA changes for the 3.4 merge window from Roland Dreier: "Nothing big really stands out; by patch count lots of fixes to the mlx4 driver plus some cleanups and fixes to the core and other drivers." * tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (28 commits) mlx4_core: Scale size of MTT table with system RAM mlx4_core: Allow dynamic MTU configuration for IB ports IB/mlx4: Fix info returned when querying IBoE ports IB/mlx4: Fix possible missed completion event mlx4_core: Report thermal error events mlx4_core: Fix one more static exported function IB: Change CQE "csum_ok" field to a bit flag RDMA/iwcm: Reject connect requests if cmid is not in LISTEN state RDMA/cxgb3: Don't pass irq flags to flush_qp() mlx4_core: Get rid of redundant ext_port_cap flags RDMA/ucma: Fix AB-BA deadlock IB/ehca: Fix ilog2() compile failure IB: Use central enum for speed instead of hard-coded values IB/iser: Post initial receive buffers before sending the final login request IB/iser: Free IB connection resources in the proper place IB/srp: Consolidate repetitive sysfs code IB/srp: Use pr_fmt() and pr_err()/pr_warn() IB/core: Fix SDR rates in sysfs mlx4: Enforce device max FMR maps in FMR alloc IB/mlx4: Set bad_wr for invalid send opcode ...
| * \ Merge branches 'misc' and 'mlx4' into for-nextRoland Dreier2012-03-121-0/+7
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/infiniband/hw/mlx4/main.c drivers/net/ethernet/mellanox/mlx4/main.c include/linux/mlx4/device.h
| | * | mlx4_core: Allow dynamic MTU configuration for IB portsOr Gerlitz2012-03-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Set the MTU for IB ports in the driver instead of using the firmware default of 2KB (the driver defaults to 4KB). Allow for dynamic mtu configuration through a new, per-port sysfs entry. Since there's a dependency between the port MTU and the max number of HW VLs the port can support, apply a mim/max approach, using a loop that goes down from the highest possible number of VLs to the lowest, using the firmware return status to know whether the requested number of VLs is possible with a given MTU. For now, as with the dynamic link type change / VPI support, the sysfs entry to change the mtu is exposed only when NOT running in SR-IOV mode. To allow changing the MTU for the master in SR-IOV mode, primary-function-initiated FLR (Function Level Reset) needs to be implemented. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | * | mlx4_core: Report thermal error eventsJack Morgenstein2012-03-121-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Print an error message when a thermal error async event is reported by the HW. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Dotan Barak <dotanb@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| | * | mlx4: Enforce device max FMR maps in FMR allocEli Cohen2012-02-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ConnectX devices have a limit on the number of mappings that can be done on an FMR before having to call sync_tpt. The current mlx4_ib driver reports the limit correctly in max_map_per_fmr in .query_device(), but mlx4_core doesn't check it when actually allocating FMRs. Add a max_fmr_maps field to struct mlx4_caps and enforce this maximum value on FMR allocations. Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
| * | | mlx4_core: Get rid of redundant ext_port_cap flagsOr Gerlitz2012-03-061-5/+0
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While doing the work for commit a6f7feae6d ("IB/mlx4: pass SMP vendor-specific attribute MADs to firmware") we realized that the firmware would respond on all sorts of vendor-specific MADs. Therefore commit 97285b7817 ("mlx4_core: Add extended port capabilities support") adds redundant code into the driver, since there's no real reaon to maintain the extended capabilities of the port, as they can be queried on demand (e.g the FDR10 capability). This patch reverts commit 97285b7817 and removes the check for extended caps from the mlx4_ib driver port query flow. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* | | net/mlx4: fixing sparse warnings for not declared, functionsYevgeny Petrilin2012-03-061-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SET_PORT functions are implemented in port.c, which is part of mlx4_core, these functions are exported. The functions are in use by the mlx4_en module (were originally part of mlx4_en). Their declaration remained in mlx4_en module, moving the declaration to the right location. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | mlx4_en: dont change mac_header on xmitEric Dumazet2012-02-261-1/+4
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A driver xmit function is not allowed to change skb without special care. mlx4_en_xmit() should not call skb_reset_mac_header() and instead should use skb->data to access ethernet header. This removes a dumb test : if (ethh && ethh->h_dest) Also remove this slow mlx4_en_mac_to_u64() call, we can use get_unaligned() to get faster code. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* | mlx4_en: eth statistics modificationEugenia Emantayev2012-01-221-0/+1
|/ | | | | | | | | | | In native mode display all available staticstics. In SRIOV mode on VF display only SW counters statistics, in SRIOV mode on hypervisor display SW counters and errors (got from FW) statistics. Signed-off-by: Eugenia Emantayev <eugenia@mellanox.co.il> Reviewed-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* mlx4_core: Changing link sensing logicYevgeny Petrilin2011-12-191-0/+2
| | | | | | | | | | | | | | | | New FW can give clues to driver regarding default port type and whether or not we should default to link sensing on the port. 2 bits are added to QUERY_PORT command: 1. suggested_type: This bit gives a hint whether the default port type should be IB or Ethernet. The driver will use this hint in case the user didn't specify explicitly the link layer type he wants to set. 2. default_sense: If this bit is set, we would sense the port type on start-up and default the port to link sensing Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* mlx4: capability for link sensingYevgeny Petrilin2011-12-191-1/+2
| | | | | | | | | | For ConnectX3 devices, we allow link sensing only if FW explicitly reported it supports the feature. For older versions (ConnectX1 and 2), if the card supports both link layer types (Ethenet and Infiniband), link sensing is supported. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* mlx4_core: Modify driver initialization flow to accommodate SRIOV for EthernetJack Morgenstein2011-12-132-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Added module parameters sr_iov and probe_vf for controlling enablement of SRIOV mode. 2. Increased default max num-qps, num-mpts and log_num_macs to accomodate SRIOV mode 3. Added port_type_array as a module parameter to allow driver startup with ports configured as desired. In SRIOV mode, only ETH is supported, and this array is ignored; otherwise, for the case where the FW supports both port types (ETH and IB), the port_type_array parameter is used. By default, the port_type_array is set to configure both ports as IB. 4. When running in sriov mode, the master needs to initialize the ICM eq table to hold the eq's for itself and also for all the slaves. 5. mlx4_set_port_mask() now invoked from mlx4_init_hca, instead of in mlx4_dev_cap. 6. Introduced sriov VF (slave) device startup/teardown logic (mainly procedures mlx4_init_slave, mlx4_slave_exit, mlx4_slave_cap, mlx4_slave_exit and flow modifications in __mlx4_init_one, mlx4_init_hca, and mlx4_setup_hca). VFs obtain their startup information from the PF (master) device via the comm channel. 7. In SRIOV mode (both PF and VF), MSI_X must be enabled, or the driver aborts loading the device. 8. Do not allow setting port type via sysfs when running in SRIOV mode. 9. mlx4_get_ownership: Currently, only one PF is supported by the driver. If the HCA is burned with FW which enables more than one PF, only one of the PFs is allowed to run. The first one up grabs a FW ownership semaphone -- all other PFs will find that semaphore taken, and the driver will not allow them to run. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Liran Liss <liranl@mellanox.co.il> Signed-off-by: Marcel Apfelbaum <marcela@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* mlx4_core: mtts resources units changed to offsetMarcel Apfelbaum2011-12-131-3/+2
| | | | | | | | | | | | | | | | | | | In the previous implementation mtts are managed by: 1. order - log(mtt segments), 'mtt segment' groups several mtts together. 2. first_seg - segment location relative to mtt table. In the current implementation: 1. order - log(mtts) rather than segments 2. offset - mtt index in mtt table Note: The actual mtt allocation is made in segments but it is transparent to callers. Rational: The mtt resource holders are not interested on how the allocation of mtt is done, but rather on how they will use it. Signed-off-by: Marcel Apfelbaum <marcela@dev.mellanox.co.il> Reviewed-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* mlx4: Ethernet port management modificationsEugenia Emantayev2011-12-131-3/+9
| | | | | | | | | | | | | | | | | The physical port is now common to the PF and VFs. The port resources and configuration is managed by the PF, VFs can only influence the MTU of the port, it is set as max among all functions, Each function allocates RX buffers of required size to meet it's MTU enforcement. Port management code was moved to mlx4_core, as the mlx4_en module is virtualization unaware Move handling qp functionality to mlx4_get_eth_qp/mlx4_put_eth_qp including reserve/release range and add/release unicast steering. Let mlx4_register/unregister_mac deal only with MAC (un)registration. Signed-off-by: Eugenia Emantayev <eugenia@mellanox.co.il> Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* mlx4_core: Reduce number of PD bits to 17Jack Morgenstein2011-12-131-0/+1
| | | | | | | | | | | | | When SRIOV is enabled on the chip (at FW burning time), the HCA uses only 17 bits for the PD. The remaining 7 high-order bits are ignored. Change the allocator to return only 17 bits for the PD. The MSB 7 bits will be used to encode the slave number for consistency checking later on in the resource tracker. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* mlx4_core: Add "native" argument to mlx4_cmd and its callers (where needed)Jack Morgenstein2011-12-131-7/+13
| | | | | | | | | | | | | | | For SRIOV, some Hypervisor commands can be executed directly (native = 1). Others should go through the command wrapper flow (for tracking resource usage, for example, or for changing some HCA configurations that slaves need to be notified of). This patch sets the groundwork for this capability -- adding the correct value of "native" in each case. Note that if SRIOV is not activated, this parameter has no effect. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* mlx4: Extanding port_mask functionalityJack Morgenstein2011-12-131-7/+6
| | | | | | | | | | | | Port mask now has additional state. Port can be set as "none". In this case neither the mlx4_en or mlx4_ib drivers take ownership of the port. In multifunction mode there is an option to set the vfs as single ported devices. (in single function mode, both physical ports belong to same function) Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
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