X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Fmsg%2Fasync%2Frdma%2FInfiniband.h;fp=src%2Fceph%2Fsrc%2Fmsg%2Fasync%2Frdma%2FInfiniband.h;h=068896c982ac7e68602395316b7067f45a30a696;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git diff --git a/src/ceph/src/msg/async/rdma/Infiniband.h b/src/ceph/src/msg/async/rdma/Infiniband.h new file mode 100644 index 0000000..068896c --- /dev/null +++ b/src/ceph/src/msg/async/rdma/Infiniband.h @@ -0,0 +1,384 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2016 XSKY + * + * Author: Haomai Wang + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + * + */ + +#ifndef CEPH_INFINIBAND_H +#define CEPH_INFINIBAND_H + +#include +#include + +#include + +#include "include/int_types.h" +#include "include/page.h" +#include "common/debug.h" +#include "common/errno.h" +#include "common/Mutex.h" +#include "msg/msg_types.h" +#include "msg/async/net_handler.h" + +#define HUGE_PAGE_SIZE (2 * 1024 * 1024) +#define ALIGN_TO_PAGE_SIZE(x) \ + (((x) + HUGE_PAGE_SIZE -1) / HUGE_PAGE_SIZE * HUGE_PAGE_SIZE) + +struct IBSYNMsg { + uint16_t lid; + uint32_t qpn; + uint32_t psn; + uint32_t peer_qpn; + union ibv_gid gid; +} __attribute__((packed)); + +class RDMAStack; +class CephContext; + +class Port { + struct ibv_context* ctxt; + int port_num; + struct ibv_port_attr* port_attr; + uint16_t lid; + int gid_idx; + union ibv_gid gid; + + public: + explicit Port(CephContext *cct, struct ibv_context* ictxt, uint8_t ipn); + uint16_t get_lid() { return lid; } + ibv_gid get_gid() { return gid; } + int get_port_num() { return port_num; } + ibv_port_attr* get_port_attr() { return port_attr; } + int get_gid_idx() { return gid_idx; } +}; + + +class Device { + ibv_device *device; + const char* name; + uint8_t port_cnt; + public: + explicit Device(CephContext *c, ibv_device* d); + ~Device() { + if (active_port) { + delete active_port; + assert(ibv_close_device(ctxt) == 0); + } + } + const char* get_name() { return name;} + uint16_t get_lid() { return active_port->get_lid(); } + ibv_gid get_gid() { return active_port->get_gid(); } + int get_gid_idx() { return active_port->get_gid_idx(); } + void binding_port(CephContext *c, int port_num); + struct ibv_context *ctxt; + ibv_device_attr *device_attr; + Port* active_port; +}; + + +class DeviceList { + struct ibv_device ** device_list; + int num; + Device** devices; + public: + DeviceList(CephContext *cct): device_list(ibv_get_device_list(&num)) { + if (device_list == NULL || num == 0) { + lderr(cct) << __func__ << " failed to get rdma device list. " << cpp_strerror(errno) << dendl; + ceph_abort(); + } + devices = new Device*[num]; + + for (int i = 0;i < num; ++i) { + devices[i] = new Device(cct, device_list[i]); + } + } + ~DeviceList() { + for (int i=0; i < num; ++i) { + delete devices[i]; + } + delete []devices; + ibv_free_device_list(device_list); + } + + Device* get_device(const char* device_name) { + assert(devices); + for (int i = 0; i < num; ++i) { + if (!strlen(device_name) || !strcmp(device_name, devices[i]->get_name())) { + return devices[i]; + } + } + return NULL; + } +}; + + +class RDMADispatcher; + +class Infiniband { + public: + class ProtectionDomain { + public: + explicit ProtectionDomain(CephContext *cct, Device *device); + ~ProtectionDomain(); + + ibv_pd* const pd; + }; + + + class MemoryManager { + public: + class Chunk { + public: + Chunk(ibv_mr* m, uint32_t len, char* b); + ~Chunk(); + + void set_offset(uint32_t o); + uint32_t get_offset(); + void set_bound(uint32_t b); + void prepare_read(uint32_t b); + uint32_t get_bound(); + uint32_t read(char* buf, uint32_t len); + uint32_t write(char* buf, uint32_t len); + bool full(); + bool over(); + void clear(); + void post_srq(Infiniband *ib); + + public: + ibv_mr* mr; + uint32_t bytes; + uint32_t bound; + uint32_t offset; + char* buffer; + }; + + class Cluster { + public: + Cluster(MemoryManager& m, uint32_t s); + ~Cluster(); + + int fill(uint32_t num); + void take_back(std::vector &ck); + int get_buffers(std::vector &chunks, size_t bytes); + Chunk *get_chunk_by_buffer(const char *c) { + uint32_t idx = (c - base) / buffer_size; + Chunk *chunk = chunk_base + idx; + return chunk; + } + bool is_my_buffer(const char *c) const { + return c >= base && c < end; + } + + MemoryManager& manager; + uint32_t buffer_size; + uint32_t num_chunk; + Mutex lock; + std::vector free_chunks; + char *base = nullptr; + char *end = nullptr; + Chunk* chunk_base = nullptr; + }; + + MemoryManager(Device *d, ProtectionDomain *p, bool hugepage); + ~MemoryManager(); + + void* malloc_huge_pages(size_t size); + void free_huge_pages(void *ptr); + void register_rx_tx(uint32_t size, uint32_t rx_num, uint32_t tx_num); + void return_tx(std::vector &chunks); + int get_send_buffers(std::vector &c, size_t bytes); + int get_channel_buffers(std::vector &chunks, size_t bytes); + bool is_tx_buffer(const char* c) { return send->is_my_buffer(c); } + bool is_rx_buffer(const char* c) { return channel->is_my_buffer(c); } + Chunk *get_tx_chunk_by_buffer(const char *c) { + return send->get_chunk_by_buffer(c); + } + uint32_t get_tx_buffer_size() const { + return send->buffer_size; + } + + bool enabled_huge_page; + + private: + Cluster* channel;//RECV + Cluster* send;// SEND + Device *device; + ProtectionDomain *pd; + }; + + private: + uint32_t max_send_wr = 0; + uint32_t max_recv_wr = 0; + uint32_t max_sge = 0; + uint8_t ib_physical_port = 0; + MemoryManager* memory_manager = nullptr; + ibv_srq* srq = nullptr; // shared receive work queue + Device *device = NULL; + ProtectionDomain *pd = NULL; + DeviceList *device_list = nullptr; + RDMADispatcher *dispatcher = nullptr; + void wire_gid_to_gid(const char *wgid, union ibv_gid *gid); + void gid_to_wire_gid(const union ibv_gid *gid, char wgid[]); + CephContext *cct; + Mutex lock; + bool initialized = false; + const std::string &device_name; + uint8_t port_num; + + public: + explicit Infiniband(CephContext *c, const std::string &device_name, uint8_t p); + ~Infiniband(); + void init(); + + void set_dispatcher(RDMADispatcher *d); + + class CompletionChannel { + static const uint32_t MAX_ACK_EVENT = 5000; + CephContext *cct; + Infiniband& infiniband; + ibv_comp_channel *channel; + ibv_cq *cq; + uint32_t cq_events_that_need_ack; + + public: + CompletionChannel(CephContext *c, Infiniband &ib); + ~CompletionChannel(); + int init(); + bool get_cq_event(); + int get_fd() { return channel->fd; } + ibv_comp_channel* get_channel() { return channel; } + void bind_cq(ibv_cq *c) { cq = c; } + void ack_events(); + }; + + // this class encapsulates the creation, use, and destruction of an RC + // completion queue. + // + // You need to call init and it will create a cq and associate to comp channel + class CompletionQueue { + public: + CompletionQueue(CephContext *c, Infiniband &ib, + const uint32_t qd, CompletionChannel *cc) + : cct(c), infiniband(ib), channel(cc), cq(NULL), queue_depth(qd) {} + ~CompletionQueue(); + int init(); + int poll_cq(int num_entries, ibv_wc *ret_wc_array); + + ibv_cq* get_cq() const { return cq; } + int rearm_notify(bool solicited_only=true); + CompletionChannel* get_cc() const { return channel; } + private: + CephContext *cct; + Infiniband& infiniband; // Infiniband to which this QP belongs + CompletionChannel *channel; + ibv_cq *cq; + uint32_t queue_depth; + }; + + // this class encapsulates the creation, use, and destruction of an RC + // queue pair. + // + // you need call init and it will create a qp and bring it to the INIT state. + // after obtaining the lid, qpn, and psn of a remote queue pair, one + // must call plumb() to bring the queue pair to the RTS state. + class QueuePair { + public: + QueuePair(CephContext *c, Infiniband& infiniband, ibv_qp_type type, + int ib_physical_port, ibv_srq *srq, + Infiniband::CompletionQueue* txcq, + Infiniband::CompletionQueue* rxcq, + uint32_t max_send_wr, uint32_t max_recv_wr, uint32_t q_key = 0); + ~QueuePair(); + + int init(); + + /** + * Get the initial packet sequence number for this QueuePair. + * This is randomly generated on creation. It should not be confused + * with the remote side's PSN, which is set in #plumb(). + */ + uint32_t get_initial_psn() const { return initial_psn; }; + /** + * Get the local queue pair number for this QueuePair. + * QPNs are analogous to UDP/TCP port numbers. + */ + uint32_t get_local_qp_number() const { return qp->qp_num; }; + /** + * Get the remote queue pair number for this QueuePair, as set in #plumb(). + * QPNs are analogous to UDP/TCP port numbers. + */ + int get_remote_qp_number(uint32_t *rqp) const; + /** + * Get the remote infiniband address for this QueuePair, as set in #plumb(). + * LIDs are "local IDs" in infiniband terminology. They are short, locally + * routable addresses. + */ + int get_remote_lid(uint16_t *lid) const; + /** + * Get the state of a QueuePair. + */ + int get_state() const; + /** + * Return true if the queue pair is in an error state, false otherwise. + */ + bool is_error() const; + ibv_qp* get_qp() const { return qp; } + Infiniband::CompletionQueue* get_tx_cq() const { return txcq; } + Infiniband::CompletionQueue* get_rx_cq() const { return rxcq; } + int to_dead(); + bool is_dead() const { return dead; } + + private: + CephContext *cct; + Infiniband& infiniband; // Infiniband to which this QP belongs + ibv_qp_type type; // QP type (IBV_QPT_RC, etc.) + ibv_context* ctxt; // device context of the HCA to use + int ib_physical_port; + ibv_pd* pd; // protection domain + ibv_srq* srq; // shared receive queue + ibv_qp* qp; // infiniband verbs QP handle + Infiniband::CompletionQueue* txcq; + Infiniband::CompletionQueue* rxcq; + uint32_t initial_psn; // initial packet sequence number + uint32_t max_send_wr; + uint32_t max_recv_wr; + uint32_t q_key; + bool dead; + }; + + public: + typedef MemoryManager::Cluster Cluster; + typedef MemoryManager::Chunk Chunk; + QueuePair* create_queue_pair(CephContext *c, CompletionQueue*, CompletionQueue*, ibv_qp_type type); + ibv_srq* create_shared_receive_queue(uint32_t max_wr, uint32_t max_sge); + int post_chunk(Chunk* chunk); + int post_channel_cluster(); + int get_tx_buffers(std::vector &c, size_t bytes); + CompletionChannel *create_comp_channel(CephContext *c); + CompletionQueue *create_comp_queue(CephContext *c, CompletionChannel *cc=NULL); + uint8_t get_ib_physical_port() { return ib_physical_port; } + int send_msg(CephContext *cct, int sd, IBSYNMsg& msg); + int recv_msg(CephContext *cct, int sd, IBSYNMsg& msg); + uint16_t get_lid() { return device->get_lid(); } + ibv_gid get_gid() { return device->get_gid(); } + MemoryManager* get_memory_manager() { return memory_manager; } + Device* get_device() { return device; } + int get_async_fd() { return device->ctxt->async_fd; } + bool is_tx_buffer(const char* c) { return memory_manager->is_tx_buffer(c);} + bool is_rx_buffer(const char* c) { return memory_manager->is_rx_buffer(c);} + Chunk *get_tx_chunk_by_buffer(const char *c) { return memory_manager->get_tx_chunk_by_buffer(c); } + static const char* wc_status_to_string(int status); + static const char* qp_state_string(int status); +}; + +#endif