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* IB/mlx4: Replace zero-length array with flexible-arrayGustavo A. R. Silva2020-05-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] sizeof(flexible-array-member) triggers a warning because flexible array members have incomplete type[1]. There are some instances of code in which the sizeof operator is being incorrectly/erroneously applied to zero-length arrays and the result is zero. Such instances may be hiding some bugs. So, this work (flexible-array member conversions) will also help to get completely rid of those sorts of issues. This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* net/mlx4: Fix the check in attaching steering rulesTalat Batheesh2017-06-041-0/+1
| | | | | | | | | | | | | | | | | Our previous patch (cited below) introduced a regression for RAW Eth QPs. Fix it by checking if the QP number provided by user-space exists, hence allowing steering rules to be added for valid QPs only. Fixes: 89c557687a32 ("net/mlx4_en: Avoid adding steering rules with invalid ring") Reported-by: Or Gerlitz <gerlitz.or@gmail.com> Signed-off-by: Talat Batheesh <talatb@mellanox.com> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Acked-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_core: Preparation for VF vlan protocol 802.1adMoshe Shemesh2016-09-241-0/+2
| | | | | | | | | | | | | | | Check device capability to support VF vlan protocol 802.1ad mode. Add vport attribute vlan protocol. Init vport vlan protocol by default to 802.1Q. Add update QP support for VF vlan protocol 802.1ad. Add func capability vlan_offload_disable to disable all vlan HW acceleration on VF while the VF is set to VF vlan protocol 802.1ad mode. No change in VF vlan protocol 802.1Q (VST) mode. Signed-off-by: Moshe Shemesh <moshe@mellanox.com> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_en: break out tx_desc write into separate functionBrenden Blanco2016-07-191-8/+10
| | | | | | | | In preparation for writing the tx descriptor from multiple functions, create a helper for both normal and blueflame access. Signed-off-by: Brenden Blanco <bblanco@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* IB/mlx4: Support modify_qp for RoCE v2Moni Shoua2016-01-191-1/+1
| | | | | | | | | In order to support modify_qp for RoCE v2, we need to set the gid_type in the QP context. Signed-off-by: Moni Shoua <monis@mellanox.com> Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* net/mlx4_core: Add support for RoCE v2 entropyMoni Shoua2016-01-191-1/+12
| | | | | | | | | In RoCE v2 we need to choose a source UDP port, we do so by using entropy over the source and dest QPNs. Signed-off-by: Moni Shoua <monis@mellanox.com> Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* net/mlx4_core: Add support for filtering multicast loopbackMaor Gottlieb2015-10-211-5/+19
| | | | | | | | | | | | | | | Update device capabilities regarding HW filtering multicast loopback support. Add MLX4_UPDATE_QP_ETH_SRC_CHECK_MC_LB attribute to mlx4_update_qp to enable changing QP context to support filtering incoming multicast loopback traffic according the sender's counter index. Set the corresponding bits in QP context to force the loopback source checks if attribute is given and HW supports it. Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
* net/mlx4_en: Add support for hardware accelerated 802.1ad vlanHadar Hen Zion2015-07-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | To enable device support in accelerated 802.1ad vlan, the port capability "packet has vlan enable" (phv_en) should be set. Firmware won't work properly, in case phv_en is not set. The user can enable "phv_en" port capability with the new ethtool private flag phv-bit. The phv-bit private flag default value is OFF, users who are interested in 802.1ad hardware acceleration should turn ON the phv-bit private flag: $ ethtool --set-priv-flags eth1 phv-bit on Once the private flag is set, the device is ready for 802.1ad vlan acceleration. The user should also change the interface device features and turn on "tx-vlan-stag-hw-insert" which is off by default: $ ethtool -K eth1 tx-vlan-stag-hw-insert on "phv-bit" private flag setting is available only for Physical Functions(PF), the Virtual Function (VF) will be able to use the feature by setting "tx-vlan-stag-hw-insert" ethtool device feature only if the feature was enabled by the Hypervisor. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4: Prepare VLAN macros for 802.1ad Hardware accelerated supportHadar Hen Zion2015-07-271-1/+1
| | | | | | | | | | | | | | | To add Hardware accelerated support in 802.1ad vlan, replace Current VLAN macros to CVLAN. Replace: MLX4_WQE_CTRL_INS_VLAN MLX4_CQE_VLAN_PRESENT_MASK With: MLX4_WQE_CTRL_INS_CVLAN MLX4_CQE_CVLAN_PRESENT_MASK Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4: Added qos_vport QP configuration in VST modeIdo Shamay2015-04-021-2/+6
| | | | | | | | | | | | | Granular QoS per VF feature introduce a new QP field, qos_vport. PF administrator can connect VF QPs to a certain QoS Vport, to inherit its proporties. Connecting QPs to the default QoS Vport (defined as 0) is always allowed, even when there are no allocated VPPs. At this point, only the default vport is connected to QPs. Signed-off-by: Ido Shamay <idos@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_core: Add basic support for QP max-rate limitingOr Gerlitz2015-03-181-4/+10
| | | | | | | | | | | | | | | | | | | Add the low-level device commands and definitions used for QP max-rate limiting. This is done through the following elements: - read rate-limit device caps in QUERY_DEV_CAP: number of different rates and the min/max rates in Kbs/Mbs/Gbs units - enhance the QP context struct to contain rate limit units and value - allow to do run time rate-limit setting to QPs through the update-qp firmware command - QP rate-limiting is disallowed for VFs Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_core: Fix wrong mask and error flow for the update-qp commandOr Gerlitz2015-03-021-1/+1
| | | | | | | | | | | | | | | | | | The bit mask for currently supported driver features (MLX4_UPDATE_QP_SUPPORTED_ATTRS) of the update-qp command was defined twice (using enum value and pre-processor define directive) and wrong. The return value of the call to mlx4_update_qp() from within the SRIOV resource-tracker was wrongly voided down. Fix both issues. issue: none Fixes: 09e05c3f78e9 ('net/mlx4: Set vlan stripping policy by the right command') Fixes: ce8d9e0d6746 ('net/mlx4_core: Add UPDATE_QP SRIOV wrapper support') Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_core: Port aggregation low level interfaceMoni Shoua2015-02-041-0/+1
| | | | | | | | | | | | | | Implement the hardware interface required for port aggregation. 1. Disable RX port check on receive - don't perform a validity check that matches to QP's port and the port where the packet is received. 2. Virtual to physical port remap - configure virtual to physical port mapping. Port remap capability for virtual functions. Signed-off-by: Moni Shoua <monis@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* mlx4: use netdev_rss_key_fill() helperEric Dumazet2014-11-161-1/+3
| | | | | | | | | | | | Use of well known RSS key increases attack surface. Switch to a random one, using generic helper so that all ports share a common key. Also provide ethtool -x support to fetch RSS key Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4: Set vlan stripping policy by the right commandMatan Barak2014-09-101-2/+10
| | | | | | | | | | | | | Changing the vlan stripping policy of the QP isn't supported by older firmware versions for the INIT2RTR command. Nevertheless, we've used it. Fix that by doing this policy change using INIT2RTR only if the firmware supports it, otherwise, we call UPDATE_QP command to do the task. Fixes: 7677fc9 ('net/mlx4: Strengthen VLAN tags/priorities enforcement in VST mode') Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_core: Add UPDATE_QP SRIOV wrapper supportMatan Barak2014-05-161-0/+11
| | | | | | | | | | | This patch adds UPDATE_QP SRIOV wrapper support. The mechanism is a general one, but currently only source MAC index changes are allowed for VFs. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_en: Use union for BlueFlame WQEAmir Vadai2014-03-021-3/+8
| | | | | | | | | | | | | | When BlueFlame is turned on, control segment of the TX WQE is changed, and the second line of it is used for QPN. Changed code to use a union in the mlx4_wqe_ctrl_seg instead of casting. This makes the code clearer and solves the static checker warning: drivers/net/ethernet/mellanox/mlx4/en_tx.c:839 mlx4_en_xmit() warn: potential memory corrupting cast 4 vs 2 bytes CC: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_core: Add basic support for TCP/IP offloads under tunnelingOr Gerlitz2013-12-311-0/+6
| | | | | | | | | | | | | | | Add the low-level device commands and definitions used for TCP/IP HW offloads of tunneled/vxlan traffic which are supported by the ConnectX3-pro NIC. This is done through the following elements: - read tunneling device caps in QUERY_DEV_CAP - add helper function to do SET_PORT for tunneling - add DMFS VXLAN steering rule definitions - add CQE and WQE checksum offload field definitions Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* include: Convert ethernet mac address declarations to use ETH_ALENJoe Perches2013-08-021-2/+3
| | | | | | | | | | | | It's convenient to have ethernet mac addresses use ETH_ALEN to be able to grep for them a bit easier and also to ensure that the addresses are __aligned(2). Add #include <linux/if_ether.h> as necessary. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_core: Add HW enforcement to VF link stateRony Efraim2013-07-011-0/+2
| | | | | | | | | | When the firmware supports the UPDATE_QP command, if the VF link is disabled, block all QPs opened by the VF, by programming the UPDATE_QP command to drop all RX & TX traffic to/from these QPs. Operates only in VST mode. Signed-off-by: Rony Efraim <ronye@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4_core: Dynamic VST to VST vlan/qos changesJack Morgenstein2013-07-011-0/+34
| | | | | | | | | | | | | | | | | | | Within VST mode, enable modifying the vlan and/or qos for a VF without requiring unbind/rebind. This requires firmware which supports the UPDATE_QP command. (If the command is not available, we fall back to requiring unbind/bind to activate these changes). To avoid race conditions with modify-qp on QPs that are affected by update-qp, this operation is performed on the comm_wq. If the update operation succeeds for all the necessary QPs, a vlan_unregister is performed for the abandoned vlan id. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4: Strengthen VLAN tags/priorities enforcement in VST modeRony Efraim2013-05-111-2/+27
| | | | | | | | | | | | | | | | Make sure that the following steps are taken: - drop packets sent by the VF with vlan tag - block packets with vlan tag which are steered to the VF - drop/block tagged packets when the policy is priority-tagged - make sure VLAN stripping for received packets is set - make sure force UP bit for the VF QP is set Use enum values for all the above instead of numerical bit offsets. Signed-off-by: Rony Efraim <ronye@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* IB/mlx4: Support memory window bindingShani Michaeli2013-02-251-3/+8
| | | | | | | | | | | | | | | * Implement memory windows binding in mlx4_ib_post_send. * Implement mlx4_ib_bind_mw by deferring to mlx4_ib_post_send. * Rename MLX4_WQE_FMR_PERM_* flags to MLX4_WQE_FMR_AND_BIND_PERM_*, indicating that they are used both for fast registration work requests, and for memory window bind work requests. Signed-off-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Shani Michaeli <shanim@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* IB/mlx4_ib: Remove local invalidate segment unused fieldsShani Michaeli2013-02-211-5/+3
| | | | | | | | | Remove unused fields from the local invalidate WQE segment structure. Signed-off-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Shani Michaeli <shanim@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP supportJack Morgenstein2012-09-301-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Merge tag 'rdma-for-3.5' of ↵Linus Torvalds2012-05-211-1/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 ...
| * 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_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>
* 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>
* net/mlx4_en: adding loopback supportAmir Vadai2011-11-271-0/+1
| | | | | | | | Device must be in promiscuous mode or DMAC must be same as the host MAC, or else packet will be dropped by the HW rx filtering. Signed-off-by: Amir Vadai <amirv@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* net/mlx4: move RSS related definitions to be globalOr Gerlitz2011-11-271-0/+27
| | | | | | | | | | Towards adding RSS support for IB drivers/application who use the mlx4 HW, make the RSS related definitions global and change the mlx4_en driver to use them. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Shlomo Pongratz <shlomop@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* IB/mlx4: Add support for XRC QPsSean Hefty2011-10-131-1/+2
| | | | | | | | Support the creation of XRC INI and TGT QPs. To handle the case where a CQ or PD is not provided, we allocate them internally with the xrcd. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
* IB/mlx4: Use flow counters on IBoE portsOr Gerlitz2011-07-181-1/+2
| | | | | | | | | Allocate flow counter per Ethernet/IBoE port, and attach this counter to all the QPs created on that port. Based on patch by Eli Cohen <eli@mellanox.co.il>. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* mlx4_core: Fix location of counter index in QP context structOr Gerlitz2011-07-181-3/+2
| | | | | | | | | Fix the address handle portion of the QP context structure to have the correct bit location for the counter index field. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
* mlx4: Add blue flame support for kernel consumersEli Cohen2011-03-231-0/+1
| | | | | | | | | | | | Using blue flame can improve latency by allowing the HW to more efficiently access the WQE. This patch presents two functions that are used to allocate or release HW resources for using blue flame; the caller need to supply a struct mlx4_bf object when allocating resources. Consumers that make use of this API should post doorbells to the UAR object pointed by the initialized struct mlx4_bf; Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
* IB/mlx4: Add VLAN support for IBoEEli Cohen2010-10-251-1/+1
| | | | | | | | | | | | | | | | | | This patch allows IBoE traffic to be encapsulated in 802.1Q tagged VLAN frames. The VLAN tag is encoded in the GID and derived from it by a simple computation. The netdev notifier callback is modified to catch VLAN device addition/removal and the port's GID table is updated to reflect the change, so that for each netdevice there is an entry in the GID table. When the port's GID table is exhausted, GID entries will not be added. Only children of the main interfaces can add to the GID table; if a VLAN interface is added on another VLAN interface (e.g. "vconfig add eth2.6 8"), then that interfaces will not add an entry to the GID table. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* mlx4_core: Update data structures and constants for IBoEEli Cohen2010-10-251-2/+5
| | | | | | | | | Add fields to hardware data structures and add new constants required for IBoE support. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mlx4: Add support for masked atomic operationsVladimir Sokolovsky2010-04-211-0/+7
| | | | | | | | Add support for masked atomic operations (masked compare and swap, masked fetch and add). Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mlx4: Add strong ordering to local inval and fast reg work requestsJack Morgenstein2009-06-051-0/+1
| | | | | | | | | | | | | | | | | The ConnectX Programmer's Reference Manual states that the "SO" bit must be set when posting Fast Register and Local Invalidate send work requests. When this bit is set, the work request will be executed only after all previous work requests on the send queue have been executed. (If the bit is not set, Fast Register and Local Invalidate WQEs may begin execution too early, which violates the defined semantics for these operations) This fixes the issue with NFS/RDMA reported in <http://lists.openfabrics.org/pipermail/general/2009-April/059253.html> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Cc: <stable@kernel.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* mlx4_core: Add VLAN tag field to WQE control segment structYevgeny Petrilin2008-07-251-1/+3
| | | | | | | | | Add fields for VLAN tag and insert VLAN tag flag to the control section struct. These fields will be used for sending ethernet packets. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mlx4: Add support for memory management extensions and local DMA L_KeyRoland Dreier2008-07-231-4/+12
| | | | | | | | | | | | | Add support for the following operations to mlx4 when device firmware supports them: - Send with invalidate and local invalidate send queue work requests; - Allocate/free fast register MRs; - Allocate/free fast register MR page lists; - Fast register MR send queue work requests; - Local DMA L_Key. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mlx4: Rename struct mlx4_lso_seg to mlx4_wqe_lso_segRoland Dreier2008-07-221-1/+1
| | | | | | | Make the struct name consistent with other WQE segment struct types defined in <linux/mlx4/qp.h>. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* mlx4_core: Add helper to move QP to ready-to-sendYevgeny Petrilin2008-04-251-0/+4
| | | | | | | Avoid duplicating code in ethernet and FC modules. Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mlx4: Add IPoIB LSO supportEli Cohen2008-04-161-0/+5
| | | | | | | Add TSO support to the mlx4_ib driver. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mlx4: Add IPoIB checksum offload supportEli Cohen2008-04-161-4/+6
| | | | | | | | | | | | ConnectX devices support checksum generation and verification of TCP and UDP packets for UD IPoIB messages. This patch checks if the HCA supports this and sets the IB_DEVICE_UD_IP_CSUM capability flag if it does. It implements support for handling the IB_SEND_IP_CSUM send flag and setting the csum_ok field in receive work completions. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Ali Ayub <ali@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mlx4: Use multiple WQ blocks to post smaller send WQEsJack Morgenstein2008-02-081-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | ConnectX HCA supports shrinking WQEs, so that a single work request can be made of multiple units of wqe_shift. This way, WRs can differ in size, and do not have to be a power of 2 in size, saving memory and speeding up send WR posting. Unfortunately, if we do this then the wqe_index field in CQEs can't be used to look up the WR ID anymore, so our implementation does this only if selective signaling is off. Further, on 32-bit platforms, we can't use vmap() to make the QP buffer virtually contigious. Thus we have to use constant-sized WRs to make sure a WR is always fully within a single page-sized chunk. Finally, we use WRs with the NOP opcode to avoid wrapping around the queue buffer in the middle of posting a WR, and we set the NoErrorCompletion bit to avoid getting completions with error for NOP WRs. However, NEC is only supported starting with firmware 2.2.232, so we use constant-sized WRs for older firmware. And, since MLX QPs only support SEND, we use constant-sized WRs in this case. When stamping during NOP posting, do stamping following setting of the NOP WQE valid bit. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mlx4: Implement query QPJack Morgenstein2007-07-121-0/+3
| | | | | Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mlx4: Make sure inline data segments don't cross a 64 byte boundaryRoland Dreier2007-06-181-0/+4
| | | | | | | | | | Inline data segments in send WQEs are not allowed to cross a 64 byte boundary. We use inline data segments to hold the UD headers for MLX QPs (QP0 and QP1). A send with GRH on QP1 will have a UD header that is too big to fit in a single inline data segment without crossing a 64 byte boundary, so split the header into two inline data segments. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adaptersRoland Dreier2007-05-081-0/+288
Add an InfiniBand driver for Mellanox ConnectX adapters. Because these adapters can also be used as ethernet NICs and Fibre Channel HBAs, the driver is split into two modules: mlx4_core: Handles low-level things like device initialization and processing firmware commands. Also controls resource allocation so that the InfiniBand, ethernet and FC functions can share a device without stepping on each other. mlx4_ib: Handles InfiniBand-specific things; plugs into the InfiniBand midlayer. Signed-off-by: Roland Dreier <rolandd@cisco.com>
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