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2c97478106
Get FULL/EMPTY/DROP events from LLD. On FULL event, disable normal user mode DB rings. Add modify_qp semantics to allow user processes to call into the kernel to ring doobells without overflowing. Add DB Full/Empty/Drop stats. Mark queues when created indicating the doorbell state. If we're in the middle of db overflow avoidance, then newly created queues should start out in this mode. Bump the C4IW_UVERBS_ABI_VERSION to 2 so the user mode library can know if the driver supports the kernel mode db ringing. Signed-off-by: Vipul Pandya <vipul@chelsio.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/*
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* Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __C4IW_USER_H__
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#define __C4IW_USER_H__
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#define C4IW_UVERBS_ABI_VERSION 2
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/*
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* Make sure that all structs defined in this file remain laid out so
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* that they pack the same way on 32-bit and 64-bit architectures (to
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* avoid incompatibility between 32-bit userspace and 64-bit kernels).
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* In particular do not use pointer types -- pass pointers in __u64
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* instead.
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*/
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struct c4iw_create_cq_resp {
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__u64 key;
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__u64 gts_key;
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__u64 memsize;
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__u32 cqid;
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__u32 size;
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__u32 qid_mask;
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};
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enum {
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C4IW_QPF_ONCHIP = (1<<0)
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};
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struct c4iw_create_qp_resp {
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__u64 ma_sync_key;
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__u64 sq_key;
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__u64 rq_key;
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__u64 sq_db_gts_key;
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__u64 rq_db_gts_key;
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__u64 sq_memsize;
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__u64 rq_memsize;
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__u32 sqid;
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__u32 rqid;
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__u32 sq_size;
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__u32 rq_size;
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__u32 qid_mask;
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__u32 flags;
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};
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#endif
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