linux/drivers/nvme/target/discovery.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Discovery service for the NVMe over Fabrics target.
 * Copyright (C) 2016 Intel Corporation. All rights reserved.
 */
#define pr_fmt(fmt) …
#include <linux/slab.h>
#include <generated/utsrelease.h>
#include "nvmet.h"

struct nvmet_subsys *nvmet_disc_subsys;

static u64 nvmet_genctr;

static void __nvmet_disc_changed(struct nvmet_port *port,
				 struct nvmet_ctrl *ctrl)
{ … }

void nvmet_port_disc_changed(struct nvmet_port *port,
			     struct nvmet_subsys *subsys)
{ … }

static void __nvmet_subsys_disc_changed(struct nvmet_port *port,
					struct nvmet_subsys *subsys,
					struct nvmet_host *host)
{ … }

void nvmet_subsys_disc_changed(struct nvmet_subsys *subsys,
			       struct nvmet_host *host)
{ … }

void nvmet_referral_enable(struct nvmet_port *parent, struct nvmet_port *port)
{ … }

void nvmet_referral_disable(struct nvmet_port *parent, struct nvmet_port *port)
{ … }

static void nvmet_format_discovery_entry(struct nvmf_disc_rsp_page_hdr *hdr,
		struct nvmet_port *port, char *subsys_nqn, char *traddr,
		u8 type, u32 numrec)
{ … }

/*
 * nvmet_set_disc_traddr - set a correct discovery log entry traddr
 *
 * IP based transports (e.g RDMA) can listen on "any" ipv4/ipv6 addresses
 * (INADDR_ANY or IN6ADDR_ANY_INIT). The discovery log page traddr reply
 * must not contain that "any" IP address. If the transport implements
 * .disc_traddr, use it. this callback will set the discovery traddr
 * from the req->port address in case the port in question listens
 * "any" IP address.
 */
static void nvmet_set_disc_traddr(struct nvmet_req *req, struct nvmet_port *port,
		char *traddr)
{ … }

static size_t discovery_log_entries(struct nvmet_req *req)
{ … }

static void nvmet_execute_disc_get_log_page(struct nvmet_req *req)
{ … }

static void nvmet_execute_disc_identify(struct nvmet_req *req)
{ … }

static void nvmet_execute_disc_set_features(struct nvmet_req *req)
{ … }

static void nvmet_execute_disc_get_features(struct nvmet_req *req)
{ … }

u16 nvmet_parse_discovery_cmd(struct nvmet_req *req)
{ … }

int __init nvmet_init_discovery(void)
{ … }

void nvmet_exit_discovery(void)
{ … }