| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Bart Van Assche | 436 | 54.09% | 33 | 55.00% |
| Roland Dreier | 204 | 25.31% | 5 | 8.33% |
| Dave Dillow | 128 | 15.88% | 9 | 15.00% |
| Sagi Grimberg | 9 | 1.12% | 1 | 1.67% |
| Christoph Hellwig | 8 | 0.99% | 1 | 1.67% |
| Vu Pham | 5 | 0.62% | 2 | 3.33% |
| Ishai Rabinovitz | 5 | 0.62% | 2 | 3.33% |
| Ramachandra K | 3 | 0.37% | 1 | 1.67% |
| Matthew Wilcox | 2 | 0.25% | 1 | 1.67% |
| Tony Jones | 2 | 0.25% | 1 | 1.67% |
| Ingo Molnar | 1 | 0.12% | 1 | 1.67% |
| Ralph Campbell | 1 | 0.12% | 1 | 1.67% |
| Dasaratharaman Chandramouli | 1 | 0.12% | 1 | 1.67% |
| Greg Kroah-Hartman | 1 | 0.12% | 1 | 1.67% |
| Total | 806 | 60 |
/* * 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. */ #ifndef IB_SRP_H #define IB_SRP_H #include <linux/types.h> #include <linux/list.h> #include <linux/mutex.h> #include <linux/scatterlist.h> #include <scsi/scsi_host.h> #include <scsi/scsi_cmnd.h> #include <rdma/ib_verbs.h> #include <rdma/ib_sa.h> #include <rdma/ib_cm.h> #include <rdma/ib_fmr_pool.h> #include <rdma/rdma_cm.h> enum { SRP_PATH_REC_TIMEOUT_MS = 1000, SRP_ABORT_TIMEOUT_MS = 5000, SRP_PORT_REDIRECT = 1, SRP_DLID_REDIRECT = 2, SRP_STALE_CONN = 3, SRP_DEF_SG_TABLESIZE = 12, SRP_DEFAULT_QUEUE_SIZE = 1 << 6, SRP_RSP_SQ_SIZE = 1, SRP_TSK_MGMT_SQ_SIZE = 1, SRP_DEFAULT_CMD_SQ_SIZE = SRP_DEFAULT_QUEUE_SIZE - SRP_RSP_SQ_SIZE - SRP_TSK_MGMT_SQ_SIZE, SRP_TAG_NO_REQ = ~0U, SRP_TAG_TSK_MGMT = 1U << 31, SRP_MAX_PAGES_PER_MR = 512, SRP_MAX_ADD_CDB_LEN = 16, SRP_MAX_IMM_SGE = 2, SRP_MAX_SGE = SRP_MAX_IMM_SGE + 1, /* * Choose the immediate data offset such that a 32 byte CDB still fits. */ SRP_IMM_DATA_OFFSET = sizeof(struct srp_cmd) + SRP_MAX_ADD_CDB_LEN + sizeof(struct srp_imm_buf), }; enum srp_target_state { SRP_TARGET_SCANNING, SRP_TARGET_LIVE, SRP_TARGET_REMOVED, }; enum srp_iu_type { SRP_IU_CMD, SRP_IU_TSK_MGMT, SRP_IU_RSP, }; /* * @mr_page_mask: HCA memory registration page mask. * @mr_page_size: HCA memory registration page size. * @mr_max_size: Maximum size in bytes of a single FMR / FR registration * request. */ struct srp_device { struct list_head dev_list; struct ib_device *dev; struct ib_pd *pd; u32 global_rkey; u64 mr_page_mask; int mr_page_size; int mr_max_size; int max_pages_per_mr; bool has_fmr; bool has_fr; bool use_fmr; bool use_fast_reg; }; struct srp_host { struct srp_device *srp_dev; u8 port; struct device dev; struct list_head target_list; spinlock_t target_lock; struct completion released; struct list_head list; struct mutex add_target_mutex; }; struct srp_request { struct scsi_cmnd *scmnd; struct srp_iu *cmd; union { struct ib_pool_fmr **fmr_list; struct srp_fr_desc **fr_list; }; u64 *map_page; struct srp_direct_buf *indirect_desc; dma_addr_t indirect_dma_addr; short nmdesc; struct ib_cqe reg_cqe; }; /** * struct srp_rdma_ch * @comp_vector: Completion vector used by this RDMA channel. * @max_it_iu_len: Maximum initiator-to-target information unit length. * @max_ti_iu_len: Maximum target-to-initiator information unit length. */ struct srp_rdma_ch { /* These are RW in the hot path, and commonly used together */ struct list_head free_tx; spinlock_t lock; s32 req_lim; /* These are read-only in the hot path */ struct srp_target_port *target ____cacheline_aligned_in_smp; struct ib_cq *send_cq; struct ib_cq *recv_cq; struct ib_qp *qp; union { struct ib_fmr_pool *fmr_pool; struct srp_fr_pool *fr_pool; }; uint32_t max_it_iu_len; uint32_t max_ti_iu_len; bool use_imm_data; /* Everything above this point is used in the hot path of * command processing. Try to keep them packed into cachelines. */ struct completion done; int status; union { struct ib_cm { struct sa_path_rec path; struct ib_sa_query *path_query; int path_query_id; struct ib_cm_id *cm_id; } ib_cm; struct rdma_cm { struct rdma_cm_id *cm_id; } rdma_cm; }; struct srp_iu **tx_ring; struct srp_iu **rx_ring; struct srp_request *req_ring; int comp_vector; u64 tsk_mgmt_tag; struct completion tsk_mgmt_done; u8 tsk_mgmt_status; bool connected; }; /** * struct srp_target_port * @comp_vector: Completion vector used by the first RDMA channel created for * this target port. */ struct srp_target_port { /* read and written in the hot path */ spinlock_t lock; /* read only in the hot path */ u32 global_rkey; struct srp_rdma_ch *ch; struct net *net; u32 ch_count; u32 lkey; enum srp_target_state state; unsigned int cmd_sg_cnt; unsigned int indirect_size; bool allow_ext_sg; /* other member variables */ union ib_gid sgid; __be64 id_ext; __be64 ioc_guid; __be64 initiator_ext; u16 io_class; struct srp_host *srp_host; struct Scsi_Host *scsi_host; struct srp_rport *rport; char target_name[32]; unsigned int scsi_id; unsigned int sg_tablesize; unsigned int target_can_queue; int mr_pool_size; int mr_per_cmd; int queue_size; int req_ring_size; int comp_vector; int tl_retry_count; bool using_rdma_cm; union { struct { __be64 service_id; union ib_gid orig_dgid; __be16 pkey; } ib_cm; struct { union { struct sockaddr_in ip4; struct sockaddr_in6 ip6; struct sockaddr_storage ss; } src; union { struct sockaddr_in ip4; struct sockaddr_in6 ip6; struct sockaddr_storage ss; } dst; bool src_specified; } rdma_cm; }; u32 rq_tmo_jiffies; int zero_req_lim; struct work_struct tl_err_work; struct work_struct remove_work; struct list_head list; bool qp_in_error; }; struct srp_iu { struct list_head list; u64 dma; void *buf; size_t size; enum dma_data_direction direction; u32 num_sge; struct ib_sge sge[SRP_MAX_SGE]; struct ib_cqe cqe; }; /** * struct srp_fr_desc - fast registration work request arguments * @entry: Entry in srp_fr_pool.free_list. * @mr: Memory region. * @frpl: Fast registration page list. */ struct srp_fr_desc { struct list_head entry; struct ib_mr *mr; }; /** * struct srp_fr_pool - pool of fast registration descriptors * * An entry is available for allocation if and only if it occurs in @free_list. * * @size: Number of descriptors in this pool. * @max_page_list_len: Maximum fast registration work request page list length. * @lock: Protects free_list. * @free_list: List of free descriptors. * @desc: Fast registration descriptor pool. */ struct srp_fr_pool { int size; int max_page_list_len; spinlock_t lock; struct list_head free_list; struct srp_fr_desc desc[0]; }; /** * struct srp_map_state - per-request DMA memory mapping state * @desc: Pointer to the element of the SRP buffer descriptor array * that is being filled in. * @pages: Array with DMA addresses of pages being considered for * memory registration. * @base_dma_addr: DMA address of the first page that has not yet been mapped. * @dma_len: Number of bytes that will be registered with the next * FMR or FR memory registration call. * @total_len: Total number of bytes in the sg-list being mapped. * @npages: Number of page addresses in the pages[] array. * @nmdesc: Number of FMR or FR memory descriptors used for mapping. * @ndesc: Number of SRP buffer descriptors that have been filled in. */ struct srp_map_state { union { struct { struct ib_pool_fmr **next; struct ib_pool_fmr **end; } fmr; struct { struct srp_fr_desc **next; struct srp_fr_desc **end; } fr; struct { void **next; void **end; } gen; }; struct srp_direct_buf *desc; union { u64 *pages; struct scatterlist *sg; }; dma_addr_t base_dma_addr; u32 dma_len; u32 total_len; unsigned int npages; unsigned int nmdesc; unsigned int ndesc; }; #endif /* IB_SRP_H */
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