| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Dennis Dalessandro | 1255 | 52.60% | 34 | 68.00% |
| Kamal Heib | 537 | 22.51% | 2 | 4.00% |
| Harish Chegondi | 408 | 17.10% | 3 | 6.00% |
| Brian Welty | 37 | 1.55% | 1 | 2.00% |
| Sebastian Sanchez | 36 | 1.51% | 1 | 2.00% |
| Jubin John | 31 | 1.30% | 1 | 2.00% |
| Niranjana Vishwanathapura | 28 | 1.17% | 1 | 2.00% |
| Or Gerlitz | 12 | 0.50% | 1 | 2.00% |
| Matan Barak | 11 | 0.46% | 1 | 2.00% |
| Jason Gunthorpe | 10 | 0.42% | 1 | 2.00% |
| Bart Van Assche | 8 | 0.34% | 1 | 2.00% |
| Jianxin Xiong | 6 | 0.25% | 1 | 2.00% |
| Mike Marciniszyn | 4 | 0.17% | 1 | 2.00% |
| Randy Dunlap | 3 | 0.13% | 1 | 2.00% |
| Total | 2386 | 50 |
/* * Copyright(c) 2016 - 2018 Intel Corporation. * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * BSD LICENSE * * 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. * - Neither the name of Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/dma-mapping.h> #include "vt.h" #include "cq.h" #include "trace.h" #define RVT_UVERBS_ABI_VERSION 2 MODULE_LICENSE("Dual BSD/GPL"); MODULE_DESCRIPTION("RDMA Verbs Transport Library"); static int rvt_init(void) { int ret = rvt_driver_cq_init(); if (ret) pr_err("Error in driver CQ init.\n"); return ret; } module_init(rvt_init); static void rvt_cleanup(void) { rvt_cq_exit(); } module_exit(rvt_cleanup); /** * rvt_alloc_device - allocate rdi * @size: how big of a structure to allocate * @nports: number of ports to allocate array slots for * * Use IB core device alloc to allocate space for the rdi which is assumed to be * inside of the ib_device. Any extra space that drivers require should be * included in size. * * We also allocate a port array based on the number of ports. * * Return: pointer to allocated rdi */ struct rvt_dev_info *rvt_alloc_device(size_t size, int nports) { struct rvt_dev_info *rdi; rdi = (struct rvt_dev_info *)ib_alloc_device(size); if (!rdi) return rdi; rdi->ports = kcalloc(nports, sizeof(struct rvt_ibport **), GFP_KERNEL); if (!rdi->ports) ib_dealloc_device(&rdi->ibdev); return rdi; } EXPORT_SYMBOL(rvt_alloc_device); /** * rvt_dealloc_device - deallocate rdi * @rdi: structure to free * * Free a structure allocated with rvt_alloc_device() */ void rvt_dealloc_device(struct rvt_dev_info *rdi) { kfree(rdi->ports); ib_dealloc_device(&rdi->ibdev); } EXPORT_SYMBOL(rvt_dealloc_device); static int rvt_query_device(struct ib_device *ibdev, struct ib_device_attr *props, struct ib_udata *uhw) { struct rvt_dev_info *rdi = ib_to_rvt(ibdev); if (uhw->inlen || uhw->outlen) return -EINVAL; /* * Return rvt_dev_info.dparms.props contents */ *props = rdi->dparms.props; return 0; } static int rvt_modify_device(struct ib_device *device, int device_modify_mask, struct ib_device_modify *device_modify) { /* * There is currently no need to supply this based on qib and hfi1. * Future drivers may need to implement this though. */ return -EOPNOTSUPP; } /** * rvt_query_port: Passes the query port call to the driver * @ibdev: Verbs IB dev * @port_num: port number, 1 based from ib core * @props: structure to hold returned properties * * Return: 0 on success */ static int rvt_query_port(struct ib_device *ibdev, u8 port_num, struct ib_port_attr *props) { struct rvt_dev_info *rdi = ib_to_rvt(ibdev); struct rvt_ibport *rvp; int port_index = ibport_num_to_idx(ibdev, port_num); if (port_index < 0) return -EINVAL; rvp = rdi->ports[port_index]; /* props being zeroed by the caller, avoid zeroing it here */ props->sm_lid = rvp->sm_lid; props->sm_sl = rvp->sm_sl; props->port_cap_flags = rvp->port_cap_flags; props->max_msg_sz = 0x80000000; props->pkey_tbl_len = rvt_get_npkeys(rdi); props->bad_pkey_cntr = rvp->pkey_violations; props->qkey_viol_cntr = rvp->qkey_violations; props->subnet_timeout = rvp->subnet_timeout; props->init_type_reply = 0; /* Populate the remaining ib_port_attr elements */ return rdi->driver_f.query_port_state(rdi, port_num, props); } /** * rvt_modify_port * @ibdev: Verbs IB dev * @port_num: Port number, 1 based from ib core * @port_modify_mask: How to change the port * @props: Structure to fill in * * Return: 0 on success */ static int rvt_modify_port(struct ib_device *ibdev, u8 port_num, int port_modify_mask, struct ib_port_modify *props) { struct rvt_dev_info *rdi = ib_to_rvt(ibdev); struct rvt_ibport *rvp; int ret = 0; int port_index = ibport_num_to_idx(ibdev, port_num); if (port_index < 0) return -EINVAL; rvp = rdi->ports[port_index]; if (port_modify_mask & IB_PORT_OPA_MASK_CHG) { rvp->port_cap3_flags |= props->set_port_cap_mask; rvp->port_cap3_flags &= ~props->clr_port_cap_mask; } else { rvp->port_cap_flags |= props->set_port_cap_mask; rvp->port_cap_flags &= ~props->clr_port_cap_mask; } if (props->set_port_cap_mask || props->clr_port_cap_mask) rdi->driver_f.cap_mask_chg(rdi, port_num); if (port_modify_mask & IB_PORT_SHUTDOWN) ret = rdi->driver_f.shut_down_port(rdi, port_num); if (port_modify_mask & IB_PORT_RESET_QKEY_CNTR) rvp->qkey_violations = 0; return ret; } /** * rvt_query_pkey - Return a pkey from the table at a given index * @ibdev: Verbs IB dev * @port_num: Port number, 1 based from ib core * @index: Index into pkey table * @pkey: returned pkey from the port pkey table * * Return: 0 on failure pkey otherwise */ static int rvt_query_pkey(struct ib_device *ibdev, u8 port_num, u16 index, u16 *pkey) { /* * Driver will be responsible for keeping rvt_dev_info.pkey_table up to * date. This function will just return that value. There is no need to * lock, if a stale value is read and sent to the user so be it there is * no way to protect against that anyway. */ struct rvt_dev_info *rdi = ib_to_rvt(ibdev); int port_index; port_index = ibport_num_to_idx(ibdev, port_num); if (port_index < 0) return -EINVAL; if (index >= rvt_get_npkeys(rdi)) return -EINVAL; *pkey = rvt_get_pkey(rdi, port_index, index); return 0; } /** * rvt_query_gid - Return a gid from the table * @ibdev: Verbs IB dev * @port_num: Port number, 1 based from ib core * @guid_index: Index in table * @gid: Gid to return * * Return: 0 on success */ static int rvt_query_gid(struct ib_device *ibdev, u8 port_num, int guid_index, union ib_gid *gid) { struct rvt_dev_info *rdi; struct rvt_ibport *rvp; int port_index; /* * Driver is responsible for updating the guid table. Which will be used * to craft the return value. This will work similar to how query_pkey() * is being done. */ port_index = ibport_num_to_idx(ibdev, port_num); if (port_index < 0) return -EINVAL; rdi = ib_to_rvt(ibdev); rvp = rdi->ports[port_index]; gid->global.subnet_prefix = rvp->gid_prefix; return rdi->driver_f.get_guid_be(rdi, rvp, guid_index, &gid->global.interface_id); } struct rvt_ucontext { struct ib_ucontext ibucontext; }; static inline struct rvt_ucontext *to_iucontext(struct ib_ucontext *ibucontext) { return container_of(ibucontext, struct rvt_ucontext, ibucontext); } /** * rvt_alloc_ucontext - Allocate a user context * @ibdev: Verbs IB dev * @udata: User data allocated */ static struct ib_ucontext *rvt_alloc_ucontext(struct ib_device *ibdev, struct ib_udata *udata) { struct rvt_ucontext *context; context = kmalloc(sizeof(*context), GFP_KERNEL); if (!context) return ERR_PTR(-ENOMEM); return &context->ibucontext; } /** *rvt_dealloc_ucontext - Free a user context *@context - Free this */ static int rvt_dealloc_ucontext(struct ib_ucontext *context) { kfree(to_iucontext(context)); return 0; } static int rvt_get_port_immutable(struct ib_device *ibdev, u8 port_num, struct ib_port_immutable *immutable) { struct rvt_dev_info *rdi = ib_to_rvt(ibdev); struct ib_port_attr attr; int err, port_index; port_index = ibport_num_to_idx(ibdev, port_num); if (port_index < 0) return -EINVAL; immutable->core_cap_flags = rdi->dparms.core_cap_flags; err = ib_query_port(ibdev, port_num, &attr); if (err) return err; immutable->pkey_tbl_len = attr.pkey_tbl_len; immutable->gid_tbl_len = attr.gid_tbl_len; immutable->max_mad_size = rdi->dparms.max_mad_size; return 0; } enum { MISC, QUERY_DEVICE, MODIFY_DEVICE, QUERY_PORT, MODIFY_PORT, QUERY_PKEY, QUERY_GID, ALLOC_UCONTEXT, DEALLOC_UCONTEXT, GET_PORT_IMMUTABLE, CREATE_QP, MODIFY_QP, DESTROY_QP, QUERY_QP, POST_SEND, POST_RECV, POST_SRQ_RECV, CREATE_AH, DESTROY_AH, MODIFY_AH, QUERY_AH, CREATE_SRQ, MODIFY_SRQ, DESTROY_SRQ, QUERY_SRQ, ATTACH_MCAST, DETACH_MCAST, GET_DMA_MR, REG_USER_MR, DEREG_MR, ALLOC_MR, MAP_MR_SG, ALLOC_FMR, MAP_PHYS_FMR, UNMAP_FMR, DEALLOC_FMR, MMAP, CREATE_CQ, DESTROY_CQ, POLL_CQ, REQ_NOTFIY_CQ, RESIZE_CQ, ALLOC_PD, DEALLOC_PD, _VERB_IDX_MAX /* Must always be last! */ }; static const struct ib_device_ops rvt_dev_ops = { .alloc_fmr = rvt_alloc_fmr, .alloc_mr = rvt_alloc_mr, .alloc_pd = rvt_alloc_pd, .alloc_ucontext = rvt_alloc_ucontext, .attach_mcast = rvt_attach_mcast, .create_ah = rvt_create_ah, .create_cq = rvt_create_cq, .create_qp = rvt_create_qp, .create_srq = rvt_create_srq, .dealloc_fmr = rvt_dealloc_fmr, .dealloc_pd = rvt_dealloc_pd, .dealloc_ucontext = rvt_dealloc_ucontext, .dereg_mr = rvt_dereg_mr, .destroy_ah = rvt_destroy_ah, .destroy_cq = rvt_destroy_cq, .destroy_qp = rvt_destroy_qp, .destroy_srq = rvt_destroy_srq, .detach_mcast = rvt_detach_mcast, .get_dma_mr = rvt_get_dma_mr, .get_port_immutable = rvt_get_port_immutable, .map_mr_sg = rvt_map_mr_sg, .map_phys_fmr = rvt_map_phys_fmr, .mmap = rvt_mmap, .modify_ah = rvt_modify_ah, .modify_device = rvt_modify_device, .modify_port = rvt_modify_port, .modify_qp = rvt_modify_qp, .modify_srq = rvt_modify_srq, .poll_cq = rvt_poll_cq, .post_recv = rvt_post_recv, .post_send = rvt_post_send, .post_srq_recv = rvt_post_srq_recv, .query_ah = rvt_query_ah, .query_device = rvt_query_device, .query_gid = rvt_query_gid, .query_pkey = rvt_query_pkey, .query_port = rvt_query_port, .query_qp = rvt_query_qp, .query_srq = rvt_query_srq, .reg_user_mr = rvt_reg_user_mr, .req_notify_cq = rvt_req_notify_cq, .resize_cq = rvt_resize_cq, .unmap_fmr = rvt_unmap_fmr, }; static noinline int check_support(struct rvt_dev_info *rdi, int verb) { switch (verb) { case MISC: /* * These functions are not part of verbs specifically but are * required for rdmavt to function. */ if ((!rdi->driver_f.port_callback) || (!rdi->driver_f.get_pci_dev)) return -EINVAL; break; case MODIFY_DEVICE: /* * rdmavt does not support modify device currently drivers must * provide. */ if (!rdi->ibdev.ops.modify_device) return -EOPNOTSUPP; break; case QUERY_PORT: if (!rdi->ibdev.ops.query_port) if (!rdi->driver_f.query_port_state) return -EINVAL; break; case MODIFY_PORT: if (!rdi->ibdev.ops.modify_port) if (!rdi->driver_f.cap_mask_chg || !rdi->driver_f.shut_down_port) return -EINVAL; break; case QUERY_GID: if (!rdi->ibdev.ops.query_gid) if (!rdi->driver_f.get_guid_be) return -EINVAL; break; case CREATE_QP: if (!rdi->ibdev.ops.create_qp) if (!rdi->driver_f.qp_priv_alloc || !rdi->driver_f.qp_priv_free || !rdi->driver_f.notify_qp_reset || !rdi->driver_f.flush_qp_waiters || !rdi->driver_f.stop_send_queue || !rdi->driver_f.quiesce_qp) return -EINVAL; break; case MODIFY_QP: if (!rdi->ibdev.ops.modify_qp) if (!rdi->driver_f.notify_qp_reset || !rdi->driver_f.schedule_send || !rdi->driver_f.get_pmtu_from_attr || !rdi->driver_f.flush_qp_waiters || !rdi->driver_f.stop_send_queue || !rdi->driver_f.quiesce_qp || !rdi->driver_f.notify_error_qp || !rdi->driver_f.mtu_from_qp || !rdi->driver_f.mtu_to_path_mtu) return -EINVAL; break; case DESTROY_QP: if (!rdi->ibdev.ops.destroy_qp) if (!rdi->driver_f.qp_priv_free || !rdi->driver_f.notify_qp_reset || !rdi->driver_f.flush_qp_waiters || !rdi->driver_f.stop_send_queue || !rdi->driver_f.quiesce_qp) return -EINVAL; break; case POST_SEND: if (!rdi->ibdev.ops.post_send) if (!rdi->driver_f.schedule_send || !rdi->driver_f.do_send || !rdi->post_parms) return -EINVAL; break; } return 0; } /** * rvt_register_device - register a driver * @rdi: main dev structure for all of rdmavt operations * * It is up to drivers to allocate the rdi and fill in the appropriate * information. * * Return: 0 on success otherwise an errno. */ int rvt_register_device(struct rvt_dev_info *rdi, u32 driver_id) { int ret = 0, i; if (!rdi) return -EINVAL; /* * Check to ensure drivers have setup the required helpers for the verbs * they want rdmavt to handle */ for (i = 0; i < _VERB_IDX_MAX; i++) if (check_support(rdi, i)) { pr_err("Driver support req not met at %d\n", i); return -EINVAL; } ib_set_device_ops(&rdi->ibdev, &rvt_dev_ops); /* Once we get past here we can use rvt_pr macros and tracepoints */ trace_rvt_dbg(rdi, "Driver attempting registration"); rvt_mmap_init(rdi); /* Queue Pairs */ ret = rvt_driver_qp_init(rdi); if (ret) { pr_err("Error in driver QP init.\n"); return -EINVAL; } /* Address Handle */ spin_lock_init(&rdi->n_ahs_lock); rdi->n_ahs_allocated = 0; /* Shared Receive Queue */ rvt_driver_srq_init(rdi); /* Multicast */ rvt_driver_mcast_init(rdi); /* Mem Region */ ret = rvt_driver_mr_init(rdi); if (ret) { pr_err("Error in driver MR init.\n"); goto bail_no_mr; } /* Memory Working Set Size */ ret = rvt_wss_init(rdi); if (ret) { rvt_pr_err(rdi, "Error in WSS init.\n"); goto bail_mr; } /* Completion queues */ spin_lock_init(&rdi->n_cqs_lock); /* DMA Operations */ rdi->ibdev.dev.dma_ops = rdi->ibdev.dev.dma_ops ? : &dma_virt_ops; /* Protection Domain */ spin_lock_init(&rdi->n_pds_lock); rdi->n_pds_allocated = 0; /* * There are some things which could be set by underlying drivers but * really should be up to rdmavt to set. For instance drivers can't know * exactly which functions rdmavt supports, nor do they know the ABI * version, so we do all of this sort of stuff here. */ rdi->ibdev.uverbs_abi_ver = RVT_UVERBS_ABI_VERSION; rdi->ibdev.uverbs_cmd_mask = (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | (1ull << IB_USER_VERBS_CMD_CREATE_AH) | (1ull << IB_USER_VERBS_CMD_MODIFY_AH) | (1ull << IB_USER_VERBS_CMD_QUERY_AH) | (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | (1ull << IB_USER_VERBS_CMD_REG_MR) | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | (1ull << IB_USER_VERBS_CMD_POLL_CQ) | (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | (1ull << IB_USER_VERBS_CMD_POST_SEND) | (1ull << IB_USER_VERBS_CMD_POST_RECV) | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | (1ull << IB_USER_VERBS_CMD_POST_SRQ_RECV); rdi->ibdev.node_type = RDMA_NODE_IB_CA; if (!rdi->ibdev.num_comp_vectors) rdi->ibdev.num_comp_vectors = 1; rdi->ibdev.driver_id = driver_id; /* We are now good to announce we exist */ ret = ib_register_device(&rdi->ibdev, dev_name(&rdi->ibdev.dev), rdi->driver_f.port_callback); if (ret) { rvt_pr_err(rdi, "Failed to register driver with ib core.\n"); goto bail_wss; } rvt_create_mad_agents(rdi); rvt_pr_info(rdi, "Registration with rdmavt done.\n"); return ret; bail_wss: rvt_wss_exit(rdi); bail_mr: rvt_mr_exit(rdi); bail_no_mr: rvt_qp_exit(rdi); return ret; } EXPORT_SYMBOL(rvt_register_device); /** * rvt_unregister_device - remove a driver * @rdi: rvt dev struct */ void rvt_unregister_device(struct rvt_dev_info *rdi) { trace_rvt_dbg(rdi, "Driver is unregistering."); if (!rdi) return; rvt_free_mad_agents(rdi); ib_unregister_device(&rdi->ibdev); rvt_wss_exit(rdi); rvt_mr_exit(rdi); rvt_qp_exit(rdi); } EXPORT_SYMBOL(rvt_unregister_device); /** * rvt_init_port - init internal data for driver port * @rdi: rvt dev strut * @port: rvt port * @port_index: 0 based index of ports, different from IB core port num * * Keep track of a list of ports. No need to have a detach port. * They persist until the driver goes away. * * Return: always 0 */ int rvt_init_port(struct rvt_dev_info *rdi, struct rvt_ibport *port, int port_index, u16 *pkey_table) { rdi->ports[port_index] = port; rdi->ports[port_index]->pkey_table = pkey_table; return 0; } EXPORT_SYMBOL(rvt_init_port);
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