- 25 5月, 2016 2 次提交
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由 Mark Bloch 提交于
Move SA ibnl client registration to ib_core module init. This will allow us to register a single client to handle all RDMA_NL_LS operations and make it SA independent. Signed-off-by: NMark Bloch <markb@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Mark Bloch 提交于
Consolidate ib_sa into ib_core, this commit eliminates ib_sa.ko and makes it part of ib_core.ko Signed-off-by: NMark Bloch <markb@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 14 5月, 2016 2 次提交
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由 Mark Bloch 提交于
Fixes a direct call to kfree_skb when nlmsg_free should be used. Fixes: 2ca546b9 ('IB/sa: Route SA pathrecord query through netlink') Signed-off-by: NMark Bloch <markb@mellanox.com> Reviewed-by: NLeon Romanovsky <leonro@mellanox.com> Signed-off-by: NLeon Romanovsky <leon@kernel.org> Reviewed-by: NIra Weiny <ira.weiny@intel.com> Reviewed-by: NSteve Wise <swise@opengridcomputing.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Mark Bloch 提交于
Fix array overrun when going over callback table. In declaration of callback table, the max size isn't provided and in registration phase, it is provided. There is potential scenario where a new operation is added and it is not supported by current client. The acceptance of such operation by ib_netlink will cause to array overrun. Fixes: 809d5fc9 ("infiniband: pass rdma_cm module to netlink_dump_start") Fixes: b493d91d ("iwcm: common code for port mapper") Fixes: 2ca546b9 ("IB/sa: Route SA pathrecord query through netlink") Signed-off-by: NMark Bloch <markb@mellanox.com> Reviewed-by: NLeon Romanovsky <leonro@mellanox.com> Signed-off-by: NLeon Romanovsky <leon@kernel.org> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 22 3月, 2016 1 次提交
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由 Eli Cohen 提交于
Per the ongoing standardisation process, when virtual HCAs are present in a network, traffic is routed based on a destination GID. In order to access the SA we use the well known SA GID. We also add a GRH required boolean field to the port attributes which is used to report to the verbs consumer whether this port is connected to a virtual network. We use this field to realize whether we need to create an address vector with GRH to access the subnet administrator. We clear the port attributes struct before calling the hardware driver to make sure the default remains that GRH is not required. Signed-off-by: NEli Cohen <eli@mellanox.com> Reviewed-by: NOr Gerlitz <ogerlitz@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 03 3月, 2016 3 次提交
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由 Or Gerlitz 提交于
According to IBTA spec v1.3 section 12.7.19, QPs should use GRH when the path returned by the SA has hop-limit > 0. Currently, we do that only for the > 1 case, fix that. Fixes: 6d969a47 ('IB/sa: Add ib_init_ah_from_path()') Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Parav Pandit 提交于
1. Replaced printk with appropriate pr_warn, pr_err, pr_info. 2. Removed unnecessary prints around memory allocation failure which are not required, as reported by the checkpatch script. Signed-off-by: NParav Pandit <pandit.parav@gmail.com> Reviewed-by: NHaggai Eran <haggaie@mellanox.com> Reviewed-by: NSagi Grimberg <sagig@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Amitoj Kaur Chawla 提交于
Use eth_zero_addr to assign the zero address to the given address array instead of memset when second argument is address of zero. The Coccinelle semantic patch used to make this change is as follows: // <smpl> @eth_zero_addr@ expression e; @@ -memset(e,0x00,ETH_ALEN); +eth_zero_addr(e); // </smpl> Signed-off-by: NAmitoj Kaur Chawla <amitoj1606@gmail.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 22 1月, 2016 1 次提交
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由 Kaike Wan 提交于
The rdma netlink local service registers a handler to handle RESOLVE response and another handler to handle SET_TIMEOUT request. The first thing these handlers do is to call netlink_capable() to check the access right of the received skb to make sure that the sender has root access. Under normal conditions, such responses and requests will be directly forwarded to the handlers without going through the netlink_dump pathway (see ibnl_rcv_msg() in drivers/infiniband/core/netlink.c). However, a user application could send a RESOLVE request (not response) to the local service, which will fall into the netlink_dump pathway, where a new skb will be created without initializing the control block. This new skb will be eventually forwarded to the local service RESOLVE response handler. Unfortunately, netlink_capable() will cause general protection fault if the skb's control block is not initialized. This patch will address the problem by checking the skb first. Signed-off-by: NKaike Wan <kaike.wan@intel.com> Reported-by: NDmitry Vyukov <dvyukov@google.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 20 1月, 2016 1 次提交
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由 Christoph Hellwig 提交于
Stop abusing wr_id and just pass the parameter explicitly. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHal Rosenstock <hal@mellanox.com> Reviewed-by: NIra Weiny <ira.weiny@intel.com> Reviewed-by: NSagi Grimberg <sagig@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 23 12月, 2015 2 次提交
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由 Matan Barak 提交于
In order to make sure API users don't try to use SGIDs which don't conform to the routing table, validate the route before searching the RoCE GID table. Signed-off-by: NMatan Barak <matanb@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Matan Barak 提交于
In order to support multiple GID types, we need to store the gid_type with each GID. This is also aligned with the RoCE v2 annex "RoCEv2 PORT GID table entries shall have a "GID type" attribute that denotes the L3 Address type". The currently supported GID is IB_GID_TYPE_IB which is also RoCE v1 GID type. This implies that gid_type should be added to roce_gid_table meta-data. Signed-off-by: NMatan Barak <matanb@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 08 12月, 2015 1 次提交
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由 Kaike Wan 提交于
It was found by Saurabh Sengar that the netlink code tried to allocate memory with GFP_KERNEL while holding a spinlock. While it is possible to fix the issue by replacing GFP_KERNEL with GFP_ATOMIC, it is better to get rid of the spinlock while sending the packet. However, in order to protect against a race condition that a quick response may be received before the request is put on the request list, we need to put the request on the list first. Signed-off-by: NKaike Wan <kaike.wan@intel.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: NIra Weiny <ira.weiny@intel.com> Reported-by: NSaurabh Sengar <saurabh.truth@gmail.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 07 11月, 2015 1 次提交
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由 Mel Gorman 提交于
mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd __GFP_WAIT has been used to identify atomic context in callers that hold spinlocks or are in interrupts. They are expected to be high priority and have access one of two watermarks lower than "min" which can be referred to as the "atomic reserve". __GFP_HIGH users get access to the first lower watermark and can be called the "high priority reserve". Over time, callers had a requirement to not block when fallback options were available. Some have abused __GFP_WAIT leading to a situation where an optimisitic allocation with a fallback option can access atomic reserves. This patch uses __GFP_ATOMIC to identify callers that are truely atomic, cannot sleep and have no alternative. High priority users continue to use __GFP_HIGH. __GFP_DIRECT_RECLAIM identifies callers that can sleep and are willing to enter direct reclaim. __GFP_KSWAPD_RECLAIM to identify callers that want to wake kswapd for background reclaim. __GFP_WAIT is redefined as a caller that is willing to enter direct reclaim and wake kswapd for background reclaim. This patch then converts a number of sites o __GFP_ATOMIC is used by callers that are high priority and have memory pools for those requests. GFP_ATOMIC uses this flag. o Callers that have a limited mempool to guarantee forward progress clear __GFP_DIRECT_RECLAIM but keep __GFP_KSWAPD_RECLAIM. bio allocations fall into this category where kswapd will still be woken but atomic reserves are not used as there is a one-entry mempool to guarantee progress. o Callers that are checking if they are non-blocking should use the helper gfpflags_allow_blocking() where possible. This is because checking for __GFP_WAIT as was done historically now can trigger false positives. Some exceptions like dm-crypt.c exist where the code intent is clearer if __GFP_DIRECT_RECLAIM is used instead of the helper due to flag manipulations. o Callers that built their own GFP flags instead of starting with GFP_KERNEL and friends now also need to specify __GFP_KSWAPD_RECLAIM. The first key hazard to watch out for is callers that removed __GFP_WAIT and was depending on access to atomic reserves for inconspicuous reasons. In some cases it may be appropriate for them to use __GFP_HIGH. The second key hazard is callers that assembled their own combination of GFP flags instead of starting with something like GFP_KERNEL. They may now wish to specify __GFP_KSWAPD_RECLAIM. It's almost certainly harmless if it's missed in most cases as other activity will wake kswapd. Signed-off-by: NMel Gorman <mgorman@techsingularity.net> Acked-by: NVlastimil Babka <vbabka@suse.cz> Acked-by: NMichal Hocko <mhocko@suse.com> Acked-by: NJohannes Weiner <hannes@cmpxchg.org> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Vitaly Wool <vitalywool@gmail.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 22 10月, 2015 4 次提交
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由 Matan Barak 提交于
The GID cache accompanies every GID with attributes. The GID attributes link the GID with its netdevice, which could be resolved to smac and vlan id easily. Since we've added the netdevice (ifindex and net) to the path record, storing the L2 attributes is duplicated data and hence these attributes are removed. Signed-off-by: NMatan Barak <matanb@mellanox.com> Reviewed-By: NDevesh Sharma <devesh.sharma@avagotech.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Matan Barak 提交于
Smac and vlan id could be resolved from the GID attribute, and thus these attributes aren't needed anymore. Removing them. Signed-off-by: NMatan Barak <matanb@mellanox.com> Reviewed-By: NDevesh Sharma <devesh.sharma@avagotech.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Matan Barak 提交于
In order to find the sgid_index, one could just query the IB cache with the correct GID and netdevice. Therefore, instead of storing the L2 attributes directly in the path, we only store the ifindex and net and use them later to get the sgid_index. The vlan_id and smac L2 attributes are removed in a later patch. Signed-off-by: NMatan Barak <matanb@mellanox.com> Reviewed-By: NDevesh Sharma <devesh.sharma@avagotech.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Matan Barak 提交于
Adding an ability to query the IB cache by a netdev and get the attributes of a GID. These parameters are necessary in order to successfully resolve the required GID (when the netdevice is known) and get the Ethernet L2 attributes from a GID. Signed-off-by: NMatan Barak <matanb@mellanox.com> Reviewed-By: NDevesh Sharma <devesh.sharma@avagotech.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 03 9月, 2015 1 次提交
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由 Kaike Wan 提交于
The flags to ibnl_put_msg should be NLM_F_REQUEST instead of GFP_KERNEL. Signed-off-by: NKaike Wan <kaike.wan@intel.com> Signed-off-by: NJohn Fleck <john.fleck@intel.com> Signed-off-by: NIra Weiny <ira.weiny@intel.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 31 8月, 2015 3 次提交
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由 Kaike Wan 提交于
This patch routes a SA pathrecord query to netlink first and processes the response appropriately. If a failure is returned, the request will be sent through IB. The decision whether to route the request to netlink first is determined by the presence of a listener for the local service netlink multicast group. If the user-space local service netlink multicast group listener is not present, the request will be sent through IB, just like what is currently being done. Signed-off-by: NKaike Wan <kaike.wan@intel.com> Signed-off-by: NJohn Fleck <john.fleck@intel.com> Signed-off-by: NIra Weiny <ira.weiny@intel.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Kaike Wan 提交于
Replace kmalloc with kzalloc so that all uninitialized fields in SA query will be zero-ed out to avoid unintentional consequence. This prepares the SA query structure to accept new fields in the future. Signed-off-by: NKaike Wan <kaike.wan@intel.com> Signed-off-by: NJohn Fleck <john.fleck@intel.com> Signed-off-by: NIra Weiny <ira.weiny@intel.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Haggai Eran 提交于
An ib_client callback that is called with the lists_rwsem locked only for read is protected from changes to the IB client lists, but not from ib_unregister_device() freeing its client data. This is because ib_unregister_device() will remove the device from the device list with lists_rwsem locked for write, but perform the rest of the cleanup, including the call to remove() without that lock. Mark client data that is undergoing de-registration with a new going_down flag in the client data context. Lock the client data list with lists_rwsem for write in addition to using the spinlock, so that functions calling the callback would be able to lock only lists_rwsem for read and let callbacks sleep. Since ib_unregister_client() now marks the client data context, no need for remove() to search the context again, so pass the client data directly to remove() callbacks. Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: NHaggai Eran <haggaie@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 15 7月, 2015 1 次提交
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由 Hal Rosenstock 提交于
Persuant to Liran's comments on node_type on linux-rdma mailing list: In an effort to reform the RDMA core and ULPs to minimize use of node_type in struct ib_device, an additional bit is added to struct ib_device for is_switch (IB switch). This is needed to be initialized by any IB switch device driver. This is a NEW requirement on such device drivers which are all "out of tree". In addition, an ib_switch helper was added to ib_verbs.h based on the is_switch device bit rather than node_type (although those should be consistent). The RDMA core (MAD, SMI, agent, sa_query, multicast, sysfs) as well as (IPoIB and SRP) ULPs are updated where appropriate to use this new helper. In some cases, the helper is now used under the covers of using rdma_[start end]_port rather than the open coding previously used. Reviewed-by: NSean Hefty <sean.hefty@intel.com> Reviewed-By: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Reviewed-by: NIra Weiny <ira.weiny@intel.com> Tested-by: NIra Weiny <ira.weiny@intel.com> Signed-off-by: NHal Rosenstock <hal@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 13 6月, 2015 1 次提交
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由 Ira Weiny 提交于
In preparation to support the new OPA MAD Base version, add a base version parameter to ib_create_send_mad and set it to IB_MGMT_BASE_VERSION for current users. Definition of the new base version and it's processing will occur in later patches. Signed-off-by: NIra Weiny <ira.weiny@intel.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 11 6月, 2015 1 次提交
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由 Moni Shoua 提交于
Registering an event handler is done for a device. This device may have one RoCE port (no SA cap) and one InfiniBand port (has SA cap). Therefore, warning from the event handler about a specific port that doesn't have SA cap is correct but pollutes the kernel log without a need. Signed-off-by: NMoni Shoua <monis@mellanox.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 19 5月, 2015 3 次提交
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由 Michael Wang 提交于
Introduce helper rdma_cap_eth_ah() to help us check if the port of an IB device support Ethernet Address Handler. Signed-off-by: NMichael Wang <yun.wang@profitbricks.com> Reviewed-by: NIra Weiny <ira.weiny@intel.com> Tested-by: NIra Weiny <ira.weiny@intel.com> Reviewed-by: NSean Hefty <sean.hefty@intel.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Tested-by: NDoug Ledford <dledford@redhat.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Michael Wang 提交于
Introduce helper rdma_cap_ib_sa() to help us check if the port of an IB device support Infiniband Subnet Administration. Signed-off-by: NMichael Wang <yun.wang@profitbricks.com> Reviewed-by: NIra Weiny <ira.weiny@intel.com> Tested-by: NIra Weiny <ira.weiny@intel.com> Reviewed-by: NSean Hefty <sean.hefty@intel.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Tested-by: NDoug Ledford <dledford@redhat.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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由 Michael Wang 提交于
Use raw management helpers to reform IB-core sa_query. Signed-off-by: NMichael Wang <yun.wang@profitbricks.com> Reviewed-by: NIra Weiny <ira.weiny@intel.com> Tested-by: NIra Weiny <ira.weiny@intel.com> Reviewed-by: NSean Hefty <sean.hefty@intel.com> Reviewed-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Tested-by: NDoug Ledford <dledford@redhat.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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- 11 8月, 2014 1 次提交
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由 Ira Weiny 提交于
Registrations options are specified through flags. Definitions of flags will be in subsequent patches. Signed-off-by: NIra Weiny <ira.weiny@intel.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 04 6月, 2014 1 次提交
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由 Roland Dreier 提交于
Properly convert gfp_t & result to bool to fix: drivers/infiniband/core/sa_query.c:621:33: warning: incorrect type in initializer (different base types) drivers/infiniband/core/sa_query.c:621:33: expected bool [unsigned] [usertype] preload drivers/infiniband/core/sa_query.c:621:33: got restricted gfp_t Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 15 1月, 2014 1 次提交
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由 Matan Barak 提交于
This patch add the support for Ethernet L2 attributes in the verbs/cm/cma structures. When dealing with L2 Ethernet, we should use smac, dmac, vlan ID and priority in a similar manner that the IB L2 (and the L4 PKEY) attributes are used. Thus, those attributes were added to the following structures: * ib_ah_attr - added dmac * ib_qp_attr - added smac and vlan_id, (sl remains vlan priority) * ib_wc - added smac, vlan_id * ib_sa_path_rec - added smac, dmac, vlan_id * cm_av - added smac and vlan_id For the path record structure, extra care was taken to avoid the new fields when packing it into wire format, so we don't break the IB CM and SA wire protocol. On the active side, the CM fills. its internal structures from the path provided by the ULP. We add there taking the ETH L2 attributes and placing them into the CM Address Handle (struct cm_av). On the passive side, the CM fills its internal structures from the WC associated with the REQ message. We add there taking the ETH L2 attributes from the WC. When the HW driver provides the required ETH L2 attributes in the WC, they set the IB_WC_WITH_SMAC and IB_WC_WITH_VLAN flags. The IB core code checks for the presence of these flags, and in their absence does address resolution from the ib_init_ah_from_wc() helper function. ib_modify_qp_is_ok is also updated to consider the link layer. Some parameters are mandatory for Ethernet link layer, while they are irrelevant for IB. Vendor drivers are modified to support the new function signature. Signed-off-by: NMatan Barak <matanb@mellanox.com> Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 21 6月, 2013 1 次提交
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由 Sean Hefty 提交于
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: NSean Hefty <sean.hefty@intel.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 28 2月, 2013 1 次提交
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由 Tejun Heo 提交于
Convert to the much saner new idr interface. v2: Mike triggered WARN_ON() in idr_preload() because send_mad(), which may be used from non-process context, was calling idr_preload() unconditionally. Preload iff @gfp_mask has __GFP_WAIT. Signed-off-by: NTejun Heo <tj@kernel.org> Reviewed-by: NSean Hefty <sean.hefty@intel.com> Reported-by: N"Marciniszyn, Mike" <mike.marciniszyn@intel.com> Cc: Roland Dreier <roland@kernel.org> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 09 7月, 2012 1 次提交
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由 Erez Shitrit 提交于
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: NErez Shitrit <erezsh@mellanox.co.il> Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 29 1月, 2011 1 次提交
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由 Tejun Heo 提交于
Commit f0626710 ("RDMA: Update workqueue usage") introduced ib_wq and removed the use of flush_scheduled_work(); however, during the merge process one chunk was lost in ib_sa_remove_one(). Fix it. Signed-off-by: NTejun Heo <tj@kernel.org> Signed-off-by: NRoland Dreier <roland@purestorage.com>
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- 17 1月, 2011 1 次提交
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由 Tejun Heo 提交于
* ib_wq is added, which is used as the common workqueue for infiniband instead of the system workqueue. All system workqueue usages including flush_scheduled_work() callers are converted to use and flush ib_wq. * cancel_delayed_work() + flush_scheduled_work() converted to cancel_delayed_work_sync(). * qib_wq is removed and ib_wq is used instead. This is to prepare for deprecation of flush_scheduled_work(). Signed-off-by: NTejun Heo <tj@kernel.org> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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- 14 10月, 2010 2 次提交
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由 Eli Cohen 提交于
Add support for IBoE device binding and IP --> GID resolution. Path resolving and multicast joining are implemented within cma.c by filling in the responses and running callbacks in the CMA work queue. IP --> GID resolution always yields IPv6 link local addresses; remote GIDs are derived from the destination MAC address of the remote port. Multicast GIDs are always mapped to multicast MACs as is done in IPv6. (IPv4 multicast is enabled by translating IPv4 multicast addresses to IPv6 multicast as described in <http://www.mail-archive.com/ipng@sunroof.eng.sun.com/msg02134.html>.) Some helper functions are added to ib_addr.h. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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由 Eli Cohen 提交于
Since IBoE is using Ethernet as its link layer, there is no central management entity so there is need for QP0. QP1 is still needed since it handles communications between CM agents. This patch will skip QP0 and create only QP1 for IBoE ports. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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- 17 11月, 2009 1 次提交
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由 Sean Hefty 提交于
Export rdma_set_ib_paths to user space to allow applications to manually set the IB path used for connections. This allows alternative ways for a user space application or library to obtain path record information, including retrieving path information from cached data, avoiding direct interaction with the IB SA. The IB SA is a single, centralized entity that can limit scaling on large clusters running MPI applications. Future changes to the rdma cm can expand on this framework to support the full range of features allowed by the IB CM, such as separate forward and reverse paths and APM. Signed-off-by: NSean Hefty <sean.hefty@intel.com> Reviewed-By: NJason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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- 06 9月, 2009 1 次提交
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由 Roland Dreier 提交于
Rather than just defining static spinlock_t variables and then initializing them later in init functions, simply define them with DEFINE_SPINLOCK() and remove the calls to spin_lock_init(). This cleans up the source a tad and also shrinks the compiled code; eg on x86-64: add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-40 (-40) function old new delta ib_uverbs_init 336 326 -10 ib_mad_init_module 147 137 -10 ib_sa_init 123 103 -20 Signed-off-by: NRoland Dreier <rolandd@cisco.com>
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