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2013-09-03Merge branches 'cxgb4', 'flowsteer', 'ipoib', 'iser', 'mlx4', 'ocrdma' and ↵Roland Dreier1-2/+126
'qib' into for-next
2013-09-02IB/core: Better checking of userspace values for receive flow steeringMatan Barak1-0/+2
- Don't allow unsupported comp_mask values, user should check ibv_query_device to know which features are supported. - Add a check in ib_uverbs_create_flow() to verify the size passed from the user space. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-08-28IB/core: Export ib_create/destroy_flow through uverbsHadar Hen Zion1-0/+1
Implement ib_uverbs_create_flow() and ib_uverbs_destroy_flow() to support flow steering for user space applications. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-08-28IB/core: Add receive flow steering supportHadar Hen Zion1-2/+117
The RDMA stack allows for applications to create IB_QPT_RAW_PACKET QPs, which receive plain Ethernet packets, specifically packets that don't carry any QPN to be matched by the receiving side. Applications using these QPs must be provided with a method to program some steering rule with the HW so packets arriving at the local port can be routed to them. This patch adds ib_create_flow(), which allow providing a flow specification for a QP. When there's a match between the specification and a received packet, the packet is forwarded to that QP, in a the same way one uses ib_attach_multicast() for IB UD multicast handling. Flow specifications are provided as instances of struct ib_flow_spec_yyy, which describe L2, L3 and L4 headers. Currently specs for Ethernet, IPv4, TCP and UDP are defined. Flow specs are made of values and masks. The input to ib_create_flow() is a struct ib_flow_attr, which contains a few mandatory control elements and optional flow specs. struct ib_flow_attr { enum ib_flow_attr_type type; u16 size; u16 priority; u32 flags; u8 num_of_specs; u8 port; /* Following are the optional layers according to user request * struct ib_flow_spec_yyy * struct ib_flow_spec_zzz */ }; As these specs are eventually coming from user space, they are defined and used in a way which allows adding new spec types without kernel/user ABI change, just with a little API enhancement which defines the newly added spec. The flow spec structures are defined with TLV (Type-Length-Value) entries, which allows calling ib_create_flow() with a list of variable length of optional specs. For the actual processing of ib_flow_attr the driver uses the number of specs and the size mandatory fields along with the TLV nature of the specs. Steering rules processing order is according to the domain over which the rule is set and the rule priority. All rules set by user space applicatations fall into the IB_FLOW_DOMAIN_USER domain, other domains could be used by future IPoIB RFS and Ethetool flow-steering interface implementation. Lower numerical value for the priority field means higher priority. The returned value from ib_create_flow() is a struct ib_flow, which contains a database pointer (handle) provided by the HW driver to be used when calling ib_destroy_flow(). Applications that offload TCP/IP traffic can also be written over IB UD QPs. The ib_create_flow() / ib_destroy_flow() API is designed to support UD QPs too. A HW driver can set IB_DEVICE_MANAGED_FLOW_STEERING to denote support for flow steering. The ib_flow_attr enum type supports usage of flow steering for promiscuous and sniffer purposes: IB_FLOW_ATTR_NORMAL - "regular" rule, steering according to rule specification IB_FLOW_ATTR_ALL_DEFAULT - default unicast and multicast rule, receive all Ethernet traffic which isn't steered to any QP IB_FLOW_ATTR_MC_DEFAULT - same as IB_FLOW_ATTR_ALL_DEFAULT but only for multicast IB_FLOW_ATTR_SNIFFER - sniffer rule, receive all port traffic ALL_DEFAULT and MC_DEFAULT rules options are valid only for Ethernet link type. Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-08-13IB/core: Add locking around event dispatching on XRC target QPsYishai Hadas1-0/+6
Fix a potential race when event occurrs on a target XRC QP and in the middle of reporting that on its shared qps, one of them is destroyed by user space application. Also add note for kernel consumers in ib_verbs.h that they must not destroy the QP from within the handler. Signed-off-by: Yishai Hadas <yishaih@mellanox.com> 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>
2013-08-12RDMA/cma: Add IPv6 support for iWARPSteve Wise1-4/+4
Modify the type of local_addr and remote_addr fields in struct iw_cm_id from struct sockaddr_in to struct sockaddr_storage to hold IPv6 and IPv4 addresses uniformly. Change the references of local_addr and remote_addr in cxgb4, cxgb3, nes and amso drivers to match this. However to be able to actully run traffic over IPv6, low-level drivers have to add code to support this. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Reviewed-by: Sean Hefty <sean.hefty@intel.com> [ Fix unused variable warnings when INFINIBAND_NES_DEBUG not set. - Roland ] Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-07-08Merge branches 'af_ib', 'cxgb4', 'misc', 'mlx5', 'ocrdma', 'qib' and 'srp' ↵Roland Dreier1-2/+33
into for-next
2013-07-07IB/core: Add reserved values to enums for low-level driver useJack Morgenstein1-2/+33
Continue the approach taken by commit d2b57063e4a ("IB/core: Reserve bits in enum ib_qp_create_flags for low-level driver use") and add reserved entries to the ib_qp_type and ib_wr_opcode enums. Low-level drivers can then define macros to use these reserved values, giving proper names to the macros for readability. Also add a range of reserved flags to enum ib_send_flags. The mlx5 IB driver uses the new additions. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-06-20RDMA/cma: Export cma_get_service_id()Sean Hefty1-0/+7
Allow the rdma_ucm to query the IB service ID formed or allocated by the rdma_cm by exporting the cma_get_service_id() functionality. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-06-20IB/sa: Export function to pack a path record into wire formatSean Hefty1-0/+7
Allow converting from struct ib_sa_path_rec to the IB defined SA path record wire format. This will be used to report path data from the rdma cm into user space. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-06-20RDMA/cma: Set qkey for AF_IBSean Hefty1-0/+1
Allow the user to specify the qkey when using AF_IB. The qkey is added to struct rdma_ucm_conn_param in place of a reserved field, but for backwards compatability, is only accessed if the associated rdma_cm_id is using AF_IB. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-06-20RDMA/cma: Update port reservation to support AF_IBSean Hefty1-0/+5
The AF_IB uses a 64-bit service id (SID), which the user can control through the use of a mask. The rdma_cm will assign values to the unmasked portions of the SID based on the selected port space and port number. Because the IB spec divides the SID range into several regions, a SID/mask combination may fall into one of the existing port space ranges as defined by the RDMA CM IP Annex. Map the AF_IB SID to the correct RDMA port space. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-06-20IB/addr: Add AF_IB support to ip_addr_sizeSean Hefty1-5/+1
Add support for AF_IB to ip_addr_size, and rename the function to account for the change. Give the compiler more control over whether the call should be inline or not by moving the definition into the .c file, removing the static inline, and exporting it. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-06-20RDMA/cma: Define native IB addressSean Hefty1-0/+89
Define AF_IB and sockaddr_ib to allow the rdma_cm to use native IB addressing. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-02-21IB/core: Add "type 2" memory windows supportShani Michaeli1-9/+64
This patch enhances the IB core support for Memory Windows (MWs). MWs allow an application to have better/flexible control over remote access to memory. Two types of MWs are supported, with the second type having two flavors: Type 1 - associated with PD only Type 2A - associated with QPN only Type 2B - associated with PD and QPN Applications can allocate a MW once, and then repeatedly bind the MW to different ranges in MRs that are associated to the same PD. Type 1 windows are bound through a verb, while type 2 windows are bound by posting a work request. The 32-bit memory key is composed of a 24-bit index and an 8-bit key. The key is changed with each bind, thus allowing more control over the peer's use of the memory key. The changes introduced are the following: * add memory window type enum and a corresponding parameter to ib_alloc_mw. * type 2 memory window bind work request support. * create a struct that contains the common part of the bind verb struct ibv_mw_bind and the bind work request into a single struct. * add the ib_inc_rkey helper function to advance the tag part of an rkey. Consumer interface details: * new device capability flags IB_DEVICE_MEM_WINDOW_TYPE_2A and IB_DEVICE_MEM_WINDOW_TYPE_2B are added to indicate device support for these features. Devices can set either IB_DEVICE_MEM_WINDOW_TYPE_2A or IB_DEVICE_MEM_WINDOW_TYPE_2B if it supports type 2A or type 2B memory windows. It can set neither to indicate it doesn't support type 2 windows at all. * modify existing provides and consumers code to the new param of ib_alloc_mw and the ib_mw_bind_info 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>
2013-01-02UAPI: Remove empty Kbuild filesDavid Howells1-0/+0
Empty files can get deleted by the patch program, so remove empty Kbuild files and their links from the parent Kbuilds. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-22UAPI: (Scripted) Disintegrate include/rdmaDavid Howells7-1628/+1
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-10-07infiniband: pass rdma_cm module to netlink_dump_startGao feng1-0/+1
set netlink_dump_control.module to avoid panic. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Cc: Roland Dreier <roland@kernel.org> Cc: Sean Hefty <sean.hefty@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-09-30IB/core: Add ib_find_exact_cached_pkey()Jack Morgenstein1-0/+16
When P_Key tables potentially contain both full and partial membership copies for the same P_Key, we need a function to find the index for an exact (16-bit) P_Key. This is necessary when the master forwards QP1 MADs sent by guests. If the guest has sent the MAD with a limited membership P_Key, we need to to forward the MAD using the same limited membership P_Key. Since the master may have both the limited and the full member P_Keys in its table, we must make sure to retrieve the limited membership P_Key in this case. 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>
2012-09-30IB/core: Reserve bits in enum ib_qp_create_flags for low-level driver useJack Morgenstein1-0/+3
Reserve bits 26-31 for internal use by low-level drivers. Two such bits are used in the mlx4_b driver SR-IOV implementation. These enum additions guarantee that the core layer will never use these bits, so that low level drivers may safely make use of them. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-07-22Merge branches 'cma', 'cxgb4', 'misc', 'mlx4-sriov', 'mlx-cleanups', ↵Roland Dreier2-0/+45
'ocrdma' and 'qib' into for-linus
2012-07-08IB/core: Move CM_xxx_ATTR_ID macros from cm_msgs.h to ib_cm.hJack Morgenstein1-0/+12
These macros will be reused by the mlx4 SRIOV-IB CM paravirtualization code, and there is no reason to have them declared both in the IB core in the mlx4 IB driver. 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>
2012-07-08IB/sa: Add GuidInfoRecord query supportErez Shitrit1-0/+33
This query is needed for SRIOV alias GUID support. The query is implemented per the IB Spec definition in section 15.2.5.18 (GuidInfoRecord). Signed-off-by: Erez Shitrit <erezsh@mellanox.co.il> 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>
2012-07-08RDMA/cma: Allow user to restrict listens to bound address familySean Hefty2-0/+11
Provide an option for the user to specify that listens should only accept connections where the incoming address family matches that of the locally bound address. This is used to support the equivalent of IPV6_V6ONLY socket option, which allows an app to only accept connection requests directed to IPv6 addresses. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-05-21Merge branches 'core', 'cxgb4', 'ipath', 'iser', 'lockdep', 'mlx4', 'nes', ↵Roland Dreier1-1/+1
'ocrdma', 'qib' and 'raw-qp' into for-linus
2012-05-18IB/core: Fix IB_SA_COMP_MASK macroJack Morgenstein1-1/+1
It needs parentheses around the argument, so that it can be used with complex arguments (e.g., "n+5"). Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-05-08IB/core: Add raw packet QP typeOr Gerlitz1-1/+1
IB_QPT_RAW_PACKET allows applications to build a complete packet, including L2 headers, when sending; on the receive side, the HW will not strip any headers. This QP type is designed for userspace direct access to Ethernet; for example by applications that do TCP/IP themselves. Only processes with the NET_RAW capability are allowed to create raw packet QPs (the name "raw packet QP" is supposed to suggest an analogy to AF_PACKET / SOL_RAW sockets). Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-05-08IB/core: Use qp->usecnt to track multicast attach/detachOr Gerlitz1-1/+1
Just as we don't allow PDs, CQs, etc. to be destroyed if there are QPs that are attached to them, don't let a QP be destroyed if there are multicast group(s) attached to it. Use the existing usecnt field of struct ib_qp which was added by commit 0e0ec7e ("RDMA/core: Export ib_open_qp() to share XRC TGT QPs") to track this. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-03-19Merge branches 'cma', 'cxgb3', 'cxgb4', 'ehca', 'iser', 'mad', 'nes', 'qib', ↵Roland Dreier1-0/+9
'srp' and 'srpt' into for-next
2012-03-08IB: Change CQE "csum_ok" field to a bit flagOr Gerlitz1-1/+1
Use a bit in wc_flags rather then a whole integer to hold the "checksum OK" flag. By itself, this change doesn't reduce the size of struct ib_wc on 64bit machines -- it stays on 56 bytes because of padding. However, it will allow to add more fields in the future without enlarging the struct. Also, it will let us have a unified approach with future libibverbs checksum offload reporting, because a bit flag doesn't break the library ABI. This patch was suggested during conversation with Liran Liss <liranl@mellanox.com>. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-03-05IB: Use central enum for speed instead of hard-coded valuesOr Gerlitz1-0/+9
The kernel IB stack uses one enumeration for IB speed, which wasn't explicitly specified in the verbs header file. Add that enum, and use it all over the code. The IB speed/width notation is also used by iWARP and IBoE HW drivers, which use the convention of rate = speed * width to advertise their port link rate. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-02-25IB/mad: Add MAD error codes from IBA specSwapna Thete1-0/+9
Add defines for MAD error codes so that they can be used when returning error responses. Signed-off-by: Swapna Thete <swapna.thete@qlogic.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-01-04rdma/core: Fix sparse warningsSean Hefty2-1/+4
Clean up sparse warnings in the rdma core layer. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-11-01Merge branch 'for-linus' of ↵Linus Torvalds5-6/+156
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (62 commits) mlx4_core: Deprecate log_num_vlan module param IB/mlx4: Don't set VLAN in IBoE WQEs' control segment IB/mlx4: Enable 4K mtu for IBoE RDMA/cxgb4: Mark QP in error before disabling the queue in firmware RDMA/cxgb4: Serialize calls to CQ's comp_handler RDMA/cxgb3: Serialize calls to CQ's comp_handler IB/qib: Fix issue with link states and QSFP cables IB/mlx4: Configure extended active speeds mlx4_core: Add extended port capabilities support IB/qib: Hold links until tuning data is available IB/qib: Clean up checkpatch issue IB/qib: Remove s_lock around header validation IB/qib: Precompute timeout jiffies to optimize latency IB/qib: Use RCU for qpn lookup IB/qib: Eliminate divide/mod in converting idx to egr buf pointer IB/qib: Decode path MTU optimization IB/qib: Optimize RC/UC code by IB operation IPoIB: Use the right function to do DMA unmap pages RDMA/cxgb4: Use correct QID in insert_recv_cqe() RDMA/cxgb4: Make sure flush CQ entries are collected on connection close ...
2011-11-01Merge branches 'amso1100', 'cma', 'cxgb3', 'cxgb4', 'fdr', 'ipath', 'ipoib', ↵Roland Dreier5-6/+156
'misc', 'mlx4', 'misc', 'nes', 'qib' and 'xrc' into for-next
2011-10-13RDMA/uverbs: Export ib_open_qp() capability to user spaceSean Hefty1-1/+13
Allow processes that share the same XRC domain to open an existing shareable QP. This permits those processes to receive events on the shared QP and transfer ownership, so that any process may modify the QP. The latter allows the creating process to exit, while a remaining process can still transition it for path migration purposes. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-13RDMA/core: Export ib_open_qp() to share XRC TGT QPsSean Hefty1-6/+24
XRC TGT QPs are shared resources among multiple processes. Since the creating process may exit, allow other processes which share the same XRC domain to open an existing QP. This allows us to transfer ownership of an XRC TGT QP to another process. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-13RDMA/ucm: Allow user to specify QP type when creating idSean Hefty1-1/+2
Allow the user to indicate the QP type separately from the port space when allocating an rdma_cm_id. With RDMA_PS_IB, there is no longer a 1:1 relationship between the QP type and port space, so we need to switch on the QP type to select between UD and connected QPs. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-13RDMA/cm: Define new RDMA port space specific to IBSean Hefty1-0/+1
Add RDMA_PS_IB. XRC QP types will use the IB port space when operating over the RDMA CM. For the 'IP protocol' field value, we select 0x3F, which is listed as being for 'any local network'. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-13RDMA/uverbs: Export XRC SRQs to user spaceSean Hefty1-2/+17
We require additional information to create XRC SRQs than we can exchange using the existing create SRQ ABI. Provide an enhanced create ABI for extended SRQ types. Based on patches by Jack Morgenstein <jackm@dev.mellanox.co.il> and Roland Dreier <roland@purestorage.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-13RDMA/uverbs: Export XRC domains to user spaceSean Hefty2-1/+20
Allow user space to create XRC domains. Because XRCDs are expected to be shared among multiple processes, we use inodes to identify an XRCD. Based on patches by Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-13RDMA/verbs: Cleanup XRC TGT QPs when destroying XRCDSean Hefty1-1/+16
XRC TGT QPs are intended to be shared among multiple users and processes. Allow the destruction of an XRC TGT QP to be done explicitly through ib_destroy_qp() or when the XRCD is destroyed. To support destroying an XRC TGT QP, we need to track TGT QPs with the XRCD. When the XRCD is destroyed, all tracked XRC TGT QPs are also cleaned up. To avoid stale reference issues, if a user is holding a reference on a TGT QP, we increment a reference count on the QP. The user releases the reference by calling ib_release_qp. This releases any access to the QP from a user above verbs, but allows the QP to continue to exist until destroyed by the XRCD. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-13RDMA/core: Add XRC QPsSean Hefty1-1/+8
XRC ("eXtended reliable connected") is an IB transport that provides better scalability by allowing senders to specify which shared receive queue (SRQ) should be used to receive a message, which essentially allows one transport context (QP connection) to serve multiple destinations (as long as they share an adapter, of course). XRC communication is between an initiator (INI) QP and a target (TGT) QP. Target QPs are associated with SRQs through an XRCD. An XRC TGT QP behaves like a receive-only RD QP. XRC INI QPs behave similarly to RC QPs, except that work requests posted to an XRC INI QP must specify the remote SRQ that is the target of the work request. We define two new QP types for XRC, to distinguish between INI and TGT QPs, and update the core layer to support XRC QPs. This patch is derived from work by Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-13RDMA/core: Add XRC SRQ typeSean Hefty1-1/+17
XRC ("eXtended reliable connected") is an IB transport that provides better scalability by allowing senders to specify which shared receive queue (SRQ) should be used to receive a message, which essentially allows one transport context (QP connection) to serve multiple destinations (as long as they share an adapter, of course). XRC defines SRQs that are specifically used by XRC connections. Expand the SRQ code to support XRC SRQs. An XRC SRQ is currently restricted to only XRC use according to the IB XRC Annex. Portions of this patch were derived from work by Jack Morgenstein <jackm@dev.mellanox.co.il>. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-13RDMA/core: Add SRQ type fieldSean Hefty1-0/+6
Currently, there is only a single ("basic") type of SRQ, but with XRC support we will add a second. Prepare for this by defining an SRQ type and setting all current users to IB_SRQT_BASIC. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-12RDMA/core: Add XRC domain supportSean Hefty1-0/+22
XRC ("eXtended reliable connected") is an IB transport that provides better scalability by allowing senders to specify which shared receive queue (SRQ) should be used to receive a message, which essentially allows one transport context (QP connection) to serve multiple destinations (as long as they share an adapter, of course). A few new concepts are introduced to support this. This patch adds: - A new device capability flag, IB_DEVICE_XRC, which low-level drivers set to indicate that a device supports XRC. - A new object type, XRC domains (struct ib_xrcd), and new verbs ib_alloc_xrcd()/ib_dealloc_xrcd(). XRCDs are used to limit which XRC SRQs an incoming message can target. This patch is derived from work by Jack Morgenstein <jackm@dev.mellanox.co.il>. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-11IB: Add new InfiniBand link speedsMarcel Apfelbaum1-1/+17
Introduce support for the following extended speeds: FDR-10: a Mellanox proprietary link speed which is 10.3125 Gbps with 64b/66b encoding rather than 8b/10b encoding. FDR: IBA extended speed 14.0625 Gbps. EDR: IBA extended speed 25.78125 Gbps. Signed-off-by: Marcel Apfelbaum <marcela@dev.mellanox.co.il> Reviewed-by: Hal Rosenstock <hal@mellanox.com> Reviewed-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-10-06RDMA/iwcm: Propagate ird/ord values upwardsKumar Sanghvi1-1/+3
Update struct iw_cm_event to support propagating the ird/ord values upwards to the application. Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com> Reviewed-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2011-09-15net: consolidate and fix ethtool_ops->get_settings callingJiri Pirko1-1/+5
This patch does several things: - introduces __ethtool_get_settings which is called from ethtool code and from drivers as well. Put ASSERT_RTNL there. - dev_ethtool_get_settings() is replaced by __ethtool_get_settings() - changes calling in drivers so rtnl locking is respected. In iboe_get_rate was previously ->get_settings() called unlocked. This fixes it. Also prb_calc_retire_blk_tmo() in af_packet.c had the same problem. Also fixed by calling __dev_get_by_index() instead of dev_get_by_index() and holding rtnl_lock for both calls. - introduces rtnl_lock in bnx2fc_vport_create() and fcoe_vport_create() so bnx2fc_if_create() and fcoe_if_create() are called locked as they are from other places. - use __ethtool_get_settings() in bonding code Signed-off-by: Jiri Pirko <jpirko@redhat.com> v2->v3: -removed dev_ethtool_get_settings() -added ASSERT_RTNL into __ethtool_get_settings() -prb_calc_retire_blk_tmo - use __dev_get_by_index() and lock around it and __ethtool_get_settings() call v1->v2: add missing export_symbol Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> [except FCoE bits] Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-26atomic: use <linux/atomic.h>Arun Sharma2-2/+2
This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: Arun Sharma <asharma@fb.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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