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[PATCH] IB uverbs: core implementation
Add the core of the InfiniBand userspace verbs implementation, including creating character device nodes, dispatching requests from userspace, and passing event notifications back up to userspace. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Roland Dreier
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Linus Torvalds
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Jul 8, 2005
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| /* | ||
| * Copyright (c) 2005 Topspin Communications. All rights reserved. | ||
| * Copyright (c) 2005 Cisco Systems. All rights reserved. | ||
| * | ||
| * This software is available to you under a choice of one of two | ||
| * licenses. You may choose to be licensed under the terms of the GNU | ||
| * General Public License (GPL) Version 2, available from the file | ||
| * COPYING in the main directory of this source tree, or the | ||
| * OpenIB.org BSD license below: | ||
| * | ||
| * Redistribution and use in source and binary forms, with or | ||
| * without modification, are permitted provided that the following | ||
| * conditions are met: | ||
| * | ||
| * - Redistributions of source code must retain the above | ||
| * copyright notice, this list of conditions and the following | ||
| * disclaimer. | ||
| * | ||
| * - Redistributions in binary form must reproduce the above | ||
| * copyright notice, this list of conditions and the following | ||
| * disclaimer in the documentation and/or other materials | ||
| * provided with the distribution. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | ||
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | ||
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| * | ||
| * $Id: uverbs.h 2559 2005-06-06 19:43:16Z roland $ | ||
| */ | ||
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| #ifndef UVERBS_H | ||
| #define UVERBS_H | ||
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| /* Include device.h and fs.h until cdev.h is self-sufficient */ | ||
| #include <linux/fs.h> | ||
| #include <linux/device.h> | ||
| #include <linux/cdev.h> | ||
| #include <linux/kref.h> | ||
| #include <linux/idr.h> | ||
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| #include <ib_verbs.h> | ||
| #include <ib_user_verbs.h> | ||
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| struct ib_uverbs_device { | ||
| int devnum; | ||
| struct cdev dev; | ||
| struct class_device class_dev; | ||
| struct ib_device *ib_dev; | ||
| int num_comp; | ||
| }; | ||
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| struct ib_uverbs_event_file { | ||
| struct kref ref; | ||
| struct ib_uverbs_file *uverbs_file; | ||
| spinlock_t lock; | ||
| int fd; | ||
| int is_async; | ||
| wait_queue_head_t poll_wait; | ||
| struct list_head event_list; | ||
| }; | ||
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| struct ib_uverbs_file { | ||
| struct kref ref; | ||
| struct ib_uverbs_device *device; | ||
| struct ib_ucontext *ucontext; | ||
| struct ib_event_handler event_handler; | ||
| struct ib_uverbs_event_file async_file; | ||
| struct ib_uverbs_event_file comp_file[1]; | ||
| }; | ||
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| struct ib_uverbs_async_event { | ||
| struct ib_uverbs_async_event_desc desc; | ||
| struct list_head list; | ||
| }; | ||
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| struct ib_uverbs_comp_event { | ||
| struct ib_uverbs_comp_event_desc desc; | ||
| struct list_head list; | ||
| }; | ||
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| struct ib_uobject_mr { | ||
| struct ib_uobject uobj; | ||
| struct page *page_list; | ||
| struct scatterlist *sg_list; | ||
| }; | ||
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| extern struct semaphore ib_uverbs_idr_mutex; | ||
| extern struct idr ib_uverbs_pd_idr; | ||
| extern struct idr ib_uverbs_mr_idr; | ||
| extern struct idr ib_uverbs_mw_idr; | ||
| extern struct idr ib_uverbs_ah_idr; | ||
| extern struct idr ib_uverbs_cq_idr; | ||
| extern struct idr ib_uverbs_qp_idr; | ||
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| void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context); | ||
| void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr); | ||
| void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr); | ||
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| int ib_umem_get(struct ib_device *dev, struct ib_umem *mem, | ||
| void *addr, size_t size, int write); | ||
| void ib_umem_release(struct ib_device *dev, struct ib_umem *umem); | ||
| void ib_umem_release_on_close(struct ib_device *dev, struct ib_umem *umem); | ||
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| #define IB_UVERBS_DECLARE_CMD(name) \ | ||
| ssize_t ib_uverbs_##name(struct ib_uverbs_file *file, \ | ||
| const char __user *buf, int in_len, \ | ||
| int out_len) | ||
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| IB_UVERBS_DECLARE_CMD(query_params); | ||
| IB_UVERBS_DECLARE_CMD(get_context); | ||
| IB_UVERBS_DECLARE_CMD(query_device); | ||
| IB_UVERBS_DECLARE_CMD(query_port); | ||
| IB_UVERBS_DECLARE_CMD(query_gid); | ||
| IB_UVERBS_DECLARE_CMD(query_pkey); | ||
| IB_UVERBS_DECLARE_CMD(alloc_pd); | ||
| IB_UVERBS_DECLARE_CMD(dealloc_pd); | ||
| IB_UVERBS_DECLARE_CMD(reg_mr); | ||
| IB_UVERBS_DECLARE_CMD(dereg_mr); | ||
| IB_UVERBS_DECLARE_CMD(create_cq); | ||
| IB_UVERBS_DECLARE_CMD(destroy_cq); | ||
| IB_UVERBS_DECLARE_CMD(create_qp); | ||
| IB_UVERBS_DECLARE_CMD(modify_qp); | ||
| IB_UVERBS_DECLARE_CMD(destroy_qp); | ||
| IB_UVERBS_DECLARE_CMD(attach_mcast); | ||
| IB_UVERBS_DECLARE_CMD(detach_mcast); | ||
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| #endif /* UVERBS_H */ |
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