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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a75895b1eb
A panic occurs when there is a newly-registered element on the QP/CQ MR
list waiting to be attached, but a different MR is deregistered. The
current code only checks for whether the list is empty, not whether the
element being deregistered is actually on the list.
Fix the panic by adding a boolean to track if the object is on the list.
Fixes: d374984179 ("i40iw: add files for iwarp interface")
Signed-off-by: Andrew Boyer <andrew.boyer@dell.com>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
181 lines
4.3 KiB
C
181 lines
4.3 KiB
C
/*******************************************************************************
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*
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* Copyright (c) 2015-2016 Intel Corporation. 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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* OpenFabrics.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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*******************************************************************************/
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#ifndef I40IW_VERBS_H
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#define I40IW_VERBS_H
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struct i40iw_ucontext {
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struct ib_ucontext ibucontext;
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struct i40iw_device *iwdev;
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struct list_head cq_reg_mem_list;
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spinlock_t cq_reg_mem_list_lock; /* memory list for cq's */
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struct list_head qp_reg_mem_list;
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spinlock_t qp_reg_mem_list_lock; /* memory list for qp's */
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int abi_ver;
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};
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struct i40iw_pd {
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struct ib_pd ibpd;
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struct i40iw_sc_pd sc_pd;
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atomic_t usecount;
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};
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struct i40iw_hmc_pble {
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union {
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u32 idx;
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dma_addr_t addr;
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};
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};
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struct i40iw_cq_mr {
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struct i40iw_hmc_pble cq_pbl;
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dma_addr_t shadow;
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};
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struct i40iw_qp_mr {
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struct i40iw_hmc_pble sq_pbl;
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struct i40iw_hmc_pble rq_pbl;
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dma_addr_t shadow;
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struct page *sq_page;
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};
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struct i40iw_pbl {
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struct list_head list;
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union {
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struct i40iw_qp_mr qp_mr;
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struct i40iw_cq_mr cq_mr;
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};
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bool pbl_allocated;
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bool on_list;
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u64 user_base;
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struct i40iw_pble_alloc pble_alloc;
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struct i40iw_mr *iwmr;
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};
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#define MAX_SAVE_PAGE_ADDRS 4
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struct i40iw_mr {
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union {
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struct ib_mr ibmr;
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struct ib_mw ibmw;
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struct ib_fmr ibfmr;
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};
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struct ib_umem *region;
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u16 type;
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u32 page_cnt;
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u32 page_size;
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u64 page_msk;
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u32 npages;
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u32 stag;
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u64 length;
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u64 pgaddrmem[MAX_SAVE_PAGE_ADDRS];
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struct i40iw_pbl iwpbl;
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};
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struct i40iw_cq {
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struct ib_cq ibcq;
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struct i40iw_sc_cq sc_cq;
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u16 cq_head;
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u16 cq_size;
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u16 cq_number;
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bool user_mode;
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u32 polled_completions;
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u32 cq_mem_size;
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struct i40iw_dma_mem kmem;
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spinlock_t lock; /* for poll cq */
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struct i40iw_pbl *iwpbl;
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};
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struct disconn_work {
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struct work_struct work;
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struct i40iw_qp *iwqp;
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};
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struct iw_cm_id;
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struct ietf_mpa_frame;
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struct i40iw_ud_file;
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struct i40iw_qp_kmode {
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struct i40iw_dma_mem dma_mem;
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u64 *wrid_mem;
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};
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struct i40iw_qp {
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struct ib_qp ibqp;
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struct i40iw_sc_qp sc_qp;
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struct i40iw_device *iwdev;
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struct i40iw_cq *iwscq;
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struct i40iw_cq *iwrcq;
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struct i40iw_pd *iwpd;
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struct i40iw_qp_host_ctx_info ctx_info;
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struct i40iwarp_offload_info iwarp_info;
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void *allocated_buffer;
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atomic_t refcount;
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struct iw_cm_id *cm_id;
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void *cm_node;
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struct ib_mr *lsmm_mr;
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struct work_struct work;
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enum ib_qp_state ibqp_state;
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u32 iwarp_state;
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u32 qp_mem_size;
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u32 last_aeq;
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atomic_t close_timer_started;
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spinlock_t lock; /* for post work requests */
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struct i40iw_qp_context *iwqp_context;
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void *pbl_vbase;
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dma_addr_t pbl_pbase;
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struct page *page;
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u8 active_conn:1;
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u8 user_mode:1;
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u8 hte_added:1;
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u8 flush_issued:1;
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u8 destroyed:1;
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u8 sig_all:1;
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u8 pau_mode:1;
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u8 rsvd:1;
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u16 term_sq_flush_code;
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u16 term_rq_flush_code;
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u8 hw_iwarp_state;
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u8 hw_tcp_state;
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struct i40iw_qp_kmode kqp;
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struct i40iw_dma_mem host_ctx;
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struct timer_list terminate_timer;
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struct i40iw_pbl iwpbl;
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struct i40iw_dma_mem q2_ctx_mem;
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struct i40iw_dma_mem ietf_mem;
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struct completion sq_drained;
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struct completion rq_drained;
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};
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#endif
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