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Commit c6a4bb2e authored by Adheer Chandravanshi's avatar Adheer Chandravanshi Committed by James Bottomley
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[SCSI] scsi_transport_iscsi: Add flash node mgmt support 

This patch allows iscsiadm to manage iSCSI target information stored on
adapter flash on per host basis.

The sysfs entries will look as cited below:
	/sys/bus/iscsi_flashnode/devices/flashnode_sess-<host_no>:<flashnode_id>/<session attrs>
	/sys/bus/iscsi_flashnode/devices/flashnode_conn-<host_no>:<flashnode_id>:<conn_id>/<conn attrs>
Signed-off-by: default avatarAdheer Chandravanshi <adheer.chandravanshi@qlogic.com>
Signed-off-by: default avatarManish Rangankar <manish.rangankar@qlogic.com>
Signed-off-by: default avatarVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 9060f6bf
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Showing with 1265 additions and 1 deletion
drivers/scsi/scsi_transport_iscsi.c
View file @ c6a4bb2e
This diff is collapsed.
include/scsi/iscsi_if.h
View file @ c6a4bb2e
......@@ -63,6 +63,12 @@ enum iscsi_uevent_e {
ISCSI_UEVENT_PING = UEVENT_BASE + 22,
ISCSI_UEVENT_GET_CHAP = UEVENT_BASE + 23,
ISCSI_UEVENT_DELETE_CHAP = UEVENT_BASE + 24,
ISCSI_UEVENT_SET_FLASHNODE_PARAMS = UEVENT_BASE + 25,
ISCSI_UEVENT_NEW_FLASHNODE = UEVENT_BASE + 26,
ISCSI_UEVENT_DEL_FLASHNODE = UEVENT_BASE + 27,
ISCSI_UEVENT_LOGIN_FLASHNODE = UEVENT_BASE + 28,
ISCSI_UEVENT_LOGOUT_FLASHNODE = UEVENT_BASE + 29,
ISCSI_UEVENT_LOGOUT_FLASHNODE_SID = UEVENT_BASE + 30,
/* up events */
ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
......@@ -210,6 +216,31 @@ struct iscsi_uevent {
uint32_t host_no;
uint16_t chap_tbl_idx;
} delete_chap;
struct msg_set_flashnode_param {
uint32_t host_no;
uint32_t flashnode_idx;
uint32_t count;
} set_flashnode;
struct msg_new_flashnode {
uint32_t host_no;
uint32_t len;
} new_flashnode;
struct msg_del_flashnode {
uint32_t host_no;
uint32_t flashnode_idx;
} del_flashnode;
struct msg_login_flashnode {
uint32_t host_no;
uint32_t flashnode_idx;
} login_flashnode;
struct msg_logout_flashnode {
uint32_t host_no;
uint32_t flashnode_idx;
} logout_flashnode;
struct msg_logout_flashnode_sid {
uint32_t host_no;
uint32_t sid;
} logout_flashnode_sid;
} u;
union {
/* messages k -> u */
......@@ -267,6 +298,9 @@ struct iscsi_uevent {
with each ping request */
uint32_t data_size;
} ping_comp;
struct msg_new_flashnode_ret {
uint32_t flashnode_idx;
} new_flashnode_ret;
} r;
} __attribute__ ((aligned (sizeof(uint64_t))));
......@@ -274,6 +308,7 @@ enum iscsi_param_type {
ISCSI_PARAM, /* iscsi_param (session, conn, target, LU) */
ISCSI_HOST_PARAM, /* iscsi_host_param */
ISCSI_NET_PARAM, /* iscsi_net_param */
ISCSI_FLASHNODE_PARAM, /* iscsi_flashnode_param */
};
struct iscsi_iface_param_info {
......@@ -469,6 +504,84 @@ enum iscsi_host_param {
ISCSI_HOST_PARAM_MAX,
};
/* iSCSI Flash Target params */
enum iscsi_flashnode_param {
ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6,
ISCSI_FLASHNODE_PORTAL_TYPE,
ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE,
ISCSI_FLASHNODE_DISCOVERY_SESS,
ISCSI_FLASHNODE_ENTRY_EN,
ISCSI_FLASHNODE_HDR_DGST_EN,
ISCSI_FLASHNODE_DATA_DGST_EN,
ISCSI_FLASHNODE_IMM_DATA_EN,
ISCSI_FLASHNODE_INITIAL_R2T_EN,
ISCSI_FLASHNODE_DATASEQ_INORDER,
ISCSI_FLASHNODE_PDU_INORDER,
ISCSI_FLASHNODE_CHAP_AUTH_EN,
ISCSI_FLASHNODE_SNACK_REQ_EN,
ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN,
ISCSI_FLASHNODE_BIDI_CHAP_EN,
/* make authentication for discovery sessions optional */
ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL,
ISCSI_FLASHNODE_ERL,
ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT,
ISCSI_FLASHNODE_TCP_NAGLE_DISABLE,
ISCSI_FLASHNODE_TCP_WSF_DISABLE,
ISCSI_FLASHNODE_TCP_TIMER_SCALE,
ISCSI_FLASHNODE_TCP_TIMESTAMP_EN,
ISCSI_FLASHNODE_IP_FRAG_DISABLE,
ISCSI_FLASHNODE_MAX_RECV_DLENGTH,
ISCSI_FLASHNODE_MAX_XMIT_DLENGTH,
ISCSI_FLASHNODE_FIRST_BURST,
ISCSI_FLASHNODE_DEF_TIME2WAIT,
ISCSI_FLASHNODE_DEF_TIME2RETAIN,
ISCSI_FLASHNODE_MAX_R2T,
ISCSI_FLASHNODE_KEEPALIVE_TMO,
ISCSI_FLASHNODE_ISID,
ISCSI_FLASHNODE_TSID,
ISCSI_FLASHNODE_PORT,
ISCSI_FLASHNODE_MAX_BURST,
ISCSI_FLASHNODE_DEF_TASKMGMT_TMO,
ISCSI_FLASHNODE_IPADDR,
ISCSI_FLASHNODE_ALIAS,
ISCSI_FLASHNODE_REDIRECT_IPADDR,
ISCSI_FLASHNODE_MAX_SEGMENT_SIZE,
ISCSI_FLASHNODE_LOCAL_PORT,
ISCSI_FLASHNODE_IPV4_TOS,
ISCSI_FLASHNODE_IPV6_TC,
ISCSI_FLASHNODE_IPV6_FLOW_LABEL,
ISCSI_FLASHNODE_NAME,
ISCSI_FLASHNODE_TPGT,
ISCSI_FLASHNODE_LINK_LOCAL_IPV6,
ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX,
ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE,
ISCSI_FLASHNODE_TCP_XMIT_WSF,
ISCSI_FLASHNODE_TCP_RECV_WSF,
ISCSI_FLASHNODE_CHAP_IN_IDX,
ISCSI_FLASHNODE_CHAP_OUT_IDX,
ISCSI_FLASHNODE_USERNAME,
ISCSI_FLASHNODE_USERNAME_IN,
ISCSI_FLASHNODE_PASSWORD,
ISCSI_FLASHNODE_PASSWORD_IN,
ISCSI_FLASHNODE_STATSN,
ISCSI_FLASHNODE_EXP_STATSN,
ISCSI_FLASHNODE_IS_BOOT_TGT,
ISCSI_FLASHNODE_MAX,
};
struct iscsi_flashnode_param_info {
uint32_t len; /* Actual length of the param */
uint16_t param; /* iscsi param value */
uint8_t value[0]; /* length sized value follows */
} __packed;
enum iscsi_discovery_parent_type {
ISCSI_DISC_PARENT_UNKNOWN = 0x1,
ISCSI_DISC_PARENT_SENDTGT = 0x2,
ISCSI_DISC_PARENT_ISNS = 0x3,
};
/* iSCSI port Speed */
enum iscsi_port_speed {
ISCSI_PORT_SPEED_UNKNOWN = 0x1,
......
include/scsi/scsi_transport_iscsi.h
View file @ c6a4bb2e
......@@ -39,6 +39,8 @@ struct iscsi_task;
struct sockaddr;
struct iscsi_iface;
struct bsg_job;
struct iscsi_bus_flash_session;
struct iscsi_bus_flash_conn;
/**
* struct iscsi_transport - iSCSI Transport template
......@@ -150,6 +152,19 @@ struct iscsi_transport {
int (*get_chap) (struct Scsi_Host *shost, uint16_t chap_tbl_idx,
uint32_t *num_entries, char *buf);
int (*delete_chap) (struct Scsi_Host *shost, uint16_t chap_tbl_idx);
int (*get_flashnode_param) (struct iscsi_bus_flash_session *fnode_sess,
int param, char *buf);
int (*set_flashnode_param) (struct iscsi_bus_flash_session *fnode_sess,
struct iscsi_bus_flash_conn *fnode_conn,
void *data, int len);
int (*new_flashnode) (struct Scsi_Host *shost, const char *buf,
int len);
int (*del_flashnode) (struct iscsi_bus_flash_session *fnode_sess);
int (*login_flashnode) (struct iscsi_bus_flash_session *fnode_sess,
struct iscsi_bus_flash_conn *fnode_conn);
int (*logout_flashnode) (struct iscsi_bus_flash_session *fnode_sess,
struct iscsi_bus_flash_conn *fnode_conn);
int (*logout_flashnode_sid) (struct iscsi_cls_session *cls_sess);
};
/*
......@@ -286,6 +301,112 @@ struct iscsi_iface {
#define iscsi_iface_to_shost(_iface) \
dev_to_shost(_iface->dev.parent)
struct iscsi_bus_flash_conn {
struct list_head conn_list; /* item in connlist */
void *dd_data; /* LLD private data */
struct iscsi_transport *transport;
struct device dev; /* sysfs transport/container device */
/* iscsi connection parameters */
uint32_t exp_statsn;
uint32_t statsn;
unsigned max_recv_dlength; /* initiator_max_recv_dsl*/
unsigned max_xmit_dlength; /* target_max_recv_dsl */
unsigned max_segment_size;
unsigned tcp_xmit_wsf;
unsigned tcp_recv_wsf;
int hdrdgst_en;
int datadgst_en;
int port;
char *ipaddress;
char *link_local_ipv6_addr;
char *redirect_ipaddr;
uint16_t keepalive_timeout;
uint16_t local_port;
uint8_t snack_req_en;
/* tcp timestamp negotiation status */
uint8_t tcp_timestamp_stat;
uint8_t tcp_nagle_disable;
/* tcp window scale factor */
uint8_t tcp_wsf_disable;
uint8_t tcp_timer_scale;
uint8_t tcp_timestamp_en;
uint8_t ipv4_tos;
uint8_t ipv6_traffic_class;
uint8_t ipv6_flow_label;
uint8_t fragment_disable;
/* Link local IPv6 address is assigned by firmware or driver */
uint8_t is_fw_assigned_ipv6;
};
#define iscsi_dev_to_flash_conn(_dev) \
container_of(_dev, struct iscsi_bus_flash_conn, dev)
#define iscsi_flash_conn_to_flash_session(_conn) \
iscsi_dev_to_flash_session(_conn->dev.parent)
#define ISID_SIZE 6
struct iscsi_bus_flash_session {
struct list_head sess_list; /* item in session_list */
struct iscsi_transport *transport;
unsigned int target_id;
int flash_state; /* persistent or non-persistent */
void *dd_data; /* LLD private data */
struct device dev; /* sysfs transport/container device */
/* iscsi session parameters */
unsigned first_burst;
unsigned max_burst;
unsigned short max_r2t;
int default_taskmgmt_timeout;
int initial_r2t_en;
int imm_data_en;
int time2wait;
int time2retain;
int pdu_inorder_en;
int dataseq_inorder_en;
int erl;
int tpgt;
char *username;
char *username_in;
char *password;
char *password_in;
char *targetname;
char *targetalias;
char *portal_type;
uint16_t tsid;
uint16_t chap_in_idx;
uint16_t chap_out_idx;
/* index of iSCSI discovery session if the entry is
* discovered by iSCSI discovery session
*/
uint16_t discovery_parent_idx;
/* indicates if discovery was done through iSNS discovery service
* or through sendTarget */
uint16_t discovery_parent_type;
/* Firmware auto sendtarget discovery disable */
uint8_t auto_snd_tgt_disable;
uint8_t discovery_sess;
/* indicates if this flashnode entry is enabled or disabled */
uint8_t entry_state;
uint8_t chap_auth_en;
/* enables firmware to auto logout the discovery session on discovery
* completion
*/
uint8_t discovery_logout_en;
uint8_t bidi_chap_en;
/* makes authentication for discovery session optional */
uint8_t discovery_auth_optional;
uint8_t isid[ISID_SIZE];
uint8_t is_boot_target;
};
#define iscsi_dev_to_flash_session(_dev) \
container_of(_dev, struct iscsi_bus_flash_session, dev)
#define iscsi_flash_session_to_shost(_session) \
dev_to_shost(_session->dev.parent)
/*
* session and connection functions that can be used by HW iSCSI LLDs
*/
......@@ -330,4 +451,34 @@ extern char *iscsi_get_port_speed_name(struct Scsi_Host *shost);
extern char *iscsi_get_port_state_name(struct Scsi_Host *shost);
extern int iscsi_is_session_dev(const struct device *dev);
extern char *iscsi_get_discovery_parent_name(int parent_type);
extern struct device *
iscsi_find_flashnode(struct Scsi_Host *shost, void *data,
int (*fn)(struct device *dev, void *data));
extern struct iscsi_bus_flash_session *
iscsi_create_flashnode_sess(struct Scsi_Host *shost, int index,
struct iscsi_transport *transport, int dd_size);
extern struct iscsi_bus_flash_conn *
iscsi_create_flashnode_conn(struct Scsi_Host *shost,
struct iscsi_bus_flash_session *fnode_sess,
struct iscsi_transport *transport, int dd_size);
extern void
iscsi_destroy_flashnode_sess(struct iscsi_bus_flash_session *fnode_sess);
extern void iscsi_destroy_all_flashnode(struct Scsi_Host *shost);
extern int iscsi_flashnode_bus_match(struct device *dev,
struct device_driver *drv);
extern int iscsi_is_flashnode_conn_dev(struct device *dev, void *data);
extern struct device *
iscsi_find_flashnode_sess(struct Scsi_Host *shost, void *data,
int (*fn)(struct device *dev, void *data));
extern struct device *
iscsi_find_flashnode_conn(struct iscsi_bus_flash_session *fnode_sess,
void *data,
int (*fn)(struct device *dev, void *data));
#endif
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