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/* packet-nvme.h
* data structures for NVMe Dissection
* Copyright 2016
* Code by Parav Pandit
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef _PACKET_NVME_H_
#define _PACKET_NVME_H_
#define NVME_CMD_SIZE 64
#define NVME_CQE_SIZE 16
#define NVME_FABRIC_OPC 0x7F
#define NVME_FCTYPE_PROP_SET 0x0
#define NVME_FCTYPE_CONNECT 0x1
#define NVME_FCTYPE_PROP_GET 0x4
#define NVME_FCTYPE_AUTH_SEND 0x5
#define NVME_FCTYPE_AUTH_RECV 0x6
#define NVME_FCTYPE_DISCONNECT 0x8
struct nvme_q_ctx {
wmem_tree_t *pending_cmds;
wmem_tree_t *done_cmds;
wmem_tree_t *data_requests;
wmem_tree_t *data_responses;
wmem_tree_t *data_offsets;
uint16_t qid;
};
#define NVME_CMD_MAX_TRS (16)
struct nvme_cmd_ctx {
uint32_t cmd_pkt_num; /* pkt number of the cmd */
uint32_t cqe_pkt_num; /* pkt number of the cqe */
uint32_t data_req_pkt_num;
uint32_t data_tr_pkt_num[NVME_CMD_MAX_TRS];
uint32_t first_tr_psn;
nstime_t cmd_start_time;
nstime_t cmd_end_time;
uint32_t tr_bytes; /* bytes transferred so far */
bool fabric; /* indicate whether cmd fabric type or not */
union {
struct {
uint16_t cns;
} cmd_identify;
struct {
unsigned records;
unsigned tr_rcrd_id;
unsigned tr_off;
unsigned tr_sub_entries;
uint16_t lsi;
uint8_t lid;
uint8_t lsp;
uint64_t off;
uint8_t uid_idx;
} get_logpage;
struct {
uint8_t fid;
} set_features;
struct {
union {
struct {
uint8_t offset;
} prop_get;
struct {
uint16_t qid;
} cnct;
};
uint8_t fctype; /* fabric cmd type */
} fabric_cmd;
} cmd_ctx;
uint8_t opcode;
};
extern int hf_nvmeof_cmd_pkt;
extern int hf_nvmeof_data_req;
const char *get_nvmeof_cmd_string(uint8_t fctype);
void
nvme_publish_qid(proto_tree *tree, int field_index, uint16_t qid);
void
nvme_publish_cmd_latency(proto_tree *tree, struct nvme_cmd_ctx *cmd_ctx,
int field_index);
void
nvme_publish_to_cmd_link(proto_tree *tree, tvbuff_t *tvb,
int hf_index, struct nvme_cmd_ctx *cmd_ctx);
void
nvme_publish_to_cqe_link(proto_tree *tree, tvbuff_t *tvb,
int hf_index, struct nvme_cmd_ctx *cmd_ctx);
void
nvme_publish_to_data_req_link(proto_tree *tree, tvbuff_t *tvb,
int hf_index, struct nvme_cmd_ctx *cmd_ctx);
void
nvme_publish_to_data_resp_link(proto_tree *tree, tvbuff_t *tvb,
int hf_index, struct nvme_cmd_ctx *cmd_ctx);
void
nvme_publish_link(proto_tree *tree, tvbuff_t *tvb, int hf_index,
uint32_t pkt_no, bool zero_ok);
void nvme_update_cmd_end_info(packet_info *pinfo, struct nvme_cmd_ctx *cmd_ctx);
void
nvme_add_cmd_to_pending_list(packet_info *pinfo, struct nvme_q_ctx *q_ctx,
struct nvme_cmd_ctx *cmd_ctx,
void *ctx, uint16_t cmd_id);
void* nvme_lookup_cmd_in_pending_list(struct nvme_q_ctx *q_ctx, uint16_t cmd_id);
struct keyed_data_req
{
uint64_t addr;
uint32_t key;
uint32_t size;
};
void
dissect_nvmeof_fabric_cmd(tvbuff_t *nvme_tvb, packet_info *pinfo, proto_tree *nvme_tree,
struct nvme_q_ctx *q_ctx, struct nvme_cmd_ctx *cmd, unsigned off, bool link_data_req);
void
dissect_nvmeof_cmd_data(tvbuff_t *data_tvb, packet_info *pinfo, proto_tree *data_tree,
unsigned pkt_off, struct nvme_q_ctx *q_ctx, struct nvme_cmd_ctx *cmd, unsigned len);
void
dissect_nvmeof_fabric_cqe(tvbuff_t *nvme_tvb, packet_info *pinfo,
proto_tree *nvme_tree,
struct nvme_cmd_ctx *cmd_ctx, unsigned off);
void
nvme_add_data_request(struct nvme_q_ctx *q_ctx, struct nvme_cmd_ctx *cmd_ctx,
struct keyed_data_req *req);
struct nvme_cmd_ctx*
nvme_lookup_data_request(struct nvme_q_ctx *q_ctx, struct keyed_data_req *req);
void
nvme_add_data_tr_pkt(struct nvme_q_ctx *q_ctx,
struct nvme_cmd_ctx *cmd_ctx, uint32_t rkey, uint32_t frame_num);
struct nvme_cmd_ctx*
nvme_lookup_data_tr_pkt(struct nvme_q_ctx *q_ctx,
uint32_t rkey, uint32_t frame_num);
void
nvme_add_data_tr_off(struct nvme_q_ctx *q_ctx, uint32_t off, uint32_t frame_num);
uint32_t
nvme_lookup_data_tr_off(struct nvme_q_ctx *q_ctx, uint32_t frame_num);
void
nvme_add_cmd_cqe_to_done_list(struct nvme_q_ctx *q_ctx,
struct nvme_cmd_ctx *cmd_ctx, uint16_t cmd_id);
void*
nvme_lookup_cmd_in_done_list(packet_info *pinfo, struct nvme_q_ctx *q_ctx,
uint16_t cmd_id);
void dissect_nvme_cmd_sgl(tvbuff_t *cmd_tvb, proto_tree *cmd_tree, int field_index,
struct nvme_q_ctx *q_ctx, struct nvme_cmd_ctx *cmd_ctx, unsigned cmd_off, bool visited);
void
dissect_nvme_cmd(tvbuff_t *nvme_tvb, packet_info *pinfo, proto_tree *root_tree,
struct nvme_q_ctx *q_ctx, struct nvme_cmd_ctx *cmd_ctx);
void nvme_update_transfer_request(packet_info *pinfo, struct nvme_cmd_ctx *cmd_ctx, struct nvme_q_ctx *q_ctx);
void
dissect_nvme_data_response(tvbuff_t *nvme_tvb, packet_info *pinfo, proto_tree *root_tree,
struct nvme_q_ctx *q_ctx, struct nvme_cmd_ctx *cmd_ctx, unsigned len, bool is_inline);
void
dissect_nvme_cqe(tvbuff_t *nvme_tvb, packet_info *pinfo, proto_tree *root_tree,
struct nvme_q_ctx *q_ctx, struct nvme_cmd_ctx *cmd_ctx);
/**
* Returns string representation of opcode according
* to opcode and queue id
*/
const char *
nvme_get_opcode_string(uint8_t opcode, uint16_t qid);
/*
* Tells if opcode can be an opcode of io queue.
* Used to "Guess" queue type for nvme-tcp in case that "connect"
* command was not recorded
*/
int
nvme_is_io_queue_opcode(uint8_t opcode);
#endif
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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