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Diffstat (limited to '')
| -rw-r--r-- | src/nvme/private.h | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/src/nvme/private.h b/src/nvme/private.h new file mode 100644 index 0000000..a6ded21 --- /dev/null +++ b/src/nvme/private.h @@ -0,0 +1,244 @@ +// SPDX-License-Identifier: LGPL-2.1-or-later +/* + * This file is part of libnvme. + * Copyright (c) 2021 SUSE Software Solutions + * + * Authors: Hannes Reinecke <hare@suse.de> + */ + +#ifndef _LIBNVME_PRIVATE_H +#define _LIBNVME_PRIVATE_H + +#include <ccan/list/list.h> +#include <poll.h> +#include <sys/socket.h> + +#include "fabrics.h" +#include "mi.h" + + +extern const char *nvme_ctrl_sysfs_dir; +extern const char *nvme_subsys_sysfs_dir; +extern const char *nvme_ns_sysfs_dir; + +struct nvme_path { + struct list_node entry; + struct list_node nentry; + + struct nvme_ctrl *c; + struct nvme_ns *n; + + char *name; + char *sysfs_dir; + char *ana_state; + int grpid; +}; + +struct nvme_ns { + struct list_node entry; + struct list_head paths; + + struct nvme_subsystem *s; + struct nvme_ctrl *c; + + int fd; + __u32 nsid; + char *name; + char *generic_name; + char *sysfs_dir; + + int lba_shift; + int lba_size; + int meta_size; + uint64_t lba_count; + uint64_t lba_util; + + uint8_t eui64[8]; + uint8_t nguid[16]; + unsigned char uuid[NVME_UUID_LEN]; + enum nvme_csi csi; +}; + +struct nvme_ctrl { + struct list_node entry; + struct list_head paths; + struct list_head namespaces; + struct nvme_subsystem *s; + + int fd; + char *name; + char *sysfs_dir; + char *address; + char *firmware; + char *model; + char *state; + char *numa_node; + char *queue_count; + char *serial; + char *sqsize; + char *transport; + char *subsysnqn; + char *traddr; + char *trsvcid; + char *dhchap_key; + char *dhchap_ctrl_key; + char *cntrltype; + char *dctype; + bool discovery_ctrl; + bool unique_discovery_ctrl; + bool discovered; + bool persistent; + struct nvme_fabrics_config cfg; +}; + +struct nvme_subsystem { + struct list_node entry; + struct list_head ctrls; + struct list_head namespaces; + struct nvme_host *h; + + char *name; + char *sysfs_dir; + char *subsysnqn; + char *model; + char *serial; + char *firmware; + char *subsystype; +}; + +struct nvme_host { + struct list_node entry; + struct list_head subsystems; + struct nvme_root *r; + + char *hostnqn; + char *hostid; + char *dhchap_key; + char *hostsymname; + bool pdc_enabled; + bool pdc_enabled_valid; /* set if pdc_enabled doesn't have an undefined + * value */ +}; + +struct nvme_root { + char *config_file; + struct list_head hosts; + struct list_head endpoints; /* MI endpoints */ + FILE *fp; + int log_level; + bool log_pid; + bool log_timestamp; + bool modified; + bool mi_probe_enabled; +}; + +int nvme_set_attr(const char *dir, const char *attr, const char *value); + +int json_read_config(nvme_root_t r, const char *config_file); + +int json_update_config(nvme_root_t r, const char *config_file); + +int json_dump_tree(nvme_root_t r); + +nvme_ctrl_t __nvme_lookup_ctrl(nvme_subsystem_t s, const char *transport, + const char *traddr, const char *host_traddr, + const char *host_iface, const char *trsvcid, + nvme_ctrl_t p); + +#if (LOG_FUNCNAME == 1) +#define __nvme_log_func __func__ +#else +#define __nvme_log_func NULL +#endif + +void __attribute__((format(printf, 4, 5))) +__nvme_msg(nvme_root_t r, int lvl, const char *func, const char *format, ...); + +#define nvme_msg(r, lvl, format, ...) \ + do { \ + if ((lvl) <= MAX_LOGLEVEL) \ + __nvme_msg(r, lvl, __nvme_log_func, \ + format, ##__VA_ARGS__); \ + } while (0) + +/* mi internal headers */ + +/* internal transport API */ +struct nvme_mi_req { + struct nvme_mi_msg_hdr *hdr; + size_t hdr_len; + void *data; + size_t data_len; + __u32 mic; +}; + +struct nvme_mi_resp { + struct nvme_mi_msg_hdr *hdr; + size_t hdr_len; + void *data; + size_t data_len; + __u32 mic; +}; + +struct nvme_mi_transport { + const char *name; + bool mic_enabled; + int (*submit)(struct nvme_mi_ep *ep, + struct nvme_mi_req *req, + struct nvme_mi_resp *resp); + void (*close)(struct nvme_mi_ep *ep); + int (*desc_ep)(struct nvme_mi_ep *ep, char *buf, size_t len); + int (*check_timeout)(struct nvme_mi_ep *ep, unsigned int timeout); +}; + +/* quirks */ + +/* Set a minimum time between receiving a response from one command and + * sending the next request. Some devices may ignore new commands sent too soon + * after the previous request, so manually insert a delay + */ +#define NVME_QUIRK_MIN_INTER_COMMAND_TIME (1 << 0) + +struct nvme_mi_ep { + struct nvme_root *root; + const struct nvme_mi_transport *transport; + void *transport_data; + struct list_node root_entry; + struct list_head controllers; + bool controllers_scanned; + unsigned int timeout; + unsigned int mprt_max; + unsigned long quirks; + + /* inter-command delay, for NVME_QUIRK_MIN_INTER_COMMAND_TIME */ + unsigned int inter_command_us; + struct timespec last_resp_time; + bool last_resp_time_valid; +}; + +struct nvme_mi_ctrl { + struct nvme_mi_ep *ep; + __u16 id; + struct list_node ep_entry; +}; + +struct nvme_mi_ep *nvme_mi_init_ep(struct nvme_root *root); +void nvme_mi_ep_probe(struct nvme_mi_ep *ep); + +/* for tests, we need to calculate the correct MICs */ +__u32 nvme_mi_crc32_update(__u32 crc, void *data, size_t len); + +/* we have a facility to mock MCTP socket operations in the mi-mctp transport, + * using this ops type. This should only be used for test, and isn't exposed + * in the shared lib */; +struct mctp_ioc_tag_ctl; +struct __mi_mctp_socket_ops { + int (*socket)(int, int, int); + ssize_t (*sendmsg)(int, const struct msghdr *, int); + ssize_t (*recvmsg)(int, struct msghdr *, int); + int (*poll)(struct pollfd *, nfds_t, int); + int (*ioctl_tag)(int, unsigned long, struct mctp_ioc_tag_ctl *); +}; +void __nvme_mi_mctp_set_ops(const struct __mi_mctp_socket_ops *newops); + +#endif /* _LIBNVME_PRIVATE_H */ |