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[SCSI] be2iscsi: Add support for iscsi boot
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This patch contains changes for adding support for iscsi_boot.
Have modified to make read of mac address from chip as a function.

  The mac_address is being cached after teh first call as it is
not expected to change

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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Jayamohan Kallickal authored and James Bottomley committed Aug 6, 2010
1 parent f3506b7 commit c7acc5b
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Showing 6 changed files with 564 additions and 46 deletions.
147 changes: 130 additions & 17 deletions drivers/scsi/be2iscsi/be_cmds.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -162,6 +162,13 @@ struct be_mcc_mailbox {
#define OPCODE_COMMON_ISCSI_CFG_POST_SGL_PAGES 2
#define OPCODE_COMMON_ISCSI_CFG_REMOVE_SGL_PAGES 3
#define OPCODE_COMMON_ISCSI_NTWK_GET_NIC_CONFIG 7
#define OPCODE_COMMON_ISCSI_NTWK_SET_VLAN 14
#define OPCODE_COMMON_ISCSI_NTWK_CONFIGURE_STATELESS_IP_ADDR 17
#define OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR 21
#define OPCODE_COMMON_ISCSI_NTWK_GET_DEFAULT_GATEWAY 22
#define OPCODE_COMMON_ISCSI_NTWK_MODIFY_DEFAULT_GATEWAY 23
#define OPCODE_COMMON_ISCSI_NTWK_GET_ALL_IF_ID 24
#define OPCODE_COMMON_ISCSI_NTWK_GET_IF_INFO 25
#define OPCODE_COMMON_ISCSI_SET_FRAGNUM_BITS_FOR_SGL_CRA 61
#define OPCODE_COMMON_ISCSI_DEFQ_CREATE 64
#define OPCODE_COMMON_ISCSI_DEFQ_DESTROY 65
Expand Down Expand Up @@ -237,11 +244,109 @@ struct be_cmd_resp_eq_create {
u16 rsvd0; /* sword */
} __packed;

struct mgmt_chap_format {
u32 flags;
u8 intr_chap_name[256];
u8 intr_secret[16];
u8 target_chap_name[256];
u8 target_secret[16];
u16 intr_chap_name_length;
u16 intr_secret_length;
u16 target_chap_name_length;
u16 target_secret_length;
} __packed;

struct mgmt_auth_method_format {
u8 auth_method_type;
u8 padding[3];
struct mgmt_chap_format chap;
} __packed;

struct mgmt_conn_login_options {
u8 flags;
u8 header_digest;
u8 data_digest;
u8 rsvd0;
u32 max_recv_datasegment_len_ini;
u32 max_recv_datasegment_len_tgt;
u32 tcp_mss;
u32 tcp_window_size;
struct mgmt_auth_method_format auth_data;
} __packed;

struct ip_address_format {
u16 size_of_structure;
u8 reserved;
u8 ip_type;
u8 ip_address[16];
u32 rsvd0;
} __packed;

struct mgmt_conn_info {
u32 connection_handle;
u32 connection_status;
u16 src_port;
u16 dest_port;
u16 dest_port_redirected;
u16 cid;
u32 estimated_throughput;
struct ip_address_format src_ipaddr;
struct ip_address_format dest_ipaddr;
struct ip_address_format dest_ipaddr_redirected;
struct mgmt_conn_login_options negotiated_login_options;
} __packed;

struct mgmt_session_login_options {
u8 flags;
u8 error_recovery_level;
u16 rsvd0;
u32 first_burst_length;
u32 max_burst_length;
u16 max_connections;
u16 max_outstanding_r2t;
u16 default_time2wait;
u16 default_time2retain;
} __packed;

struct mgmt_session_info {
u32 session_handle;
u32 status;
u8 isid[6];
u16 tsih;
u32 session_flags;
u16 conn_count;
u16 pad;
u8 target_name[224];
u8 initiator_iscsiname[224];
struct mgmt_session_login_options negotiated_login_options;
struct mgmt_conn_info conn_list[1];
} __packed;

struct be_cmd_req_get_session {
struct be_cmd_req_hdr hdr;
u32 session_handle;
} __packed;

struct be_cmd_resp_get_session {
struct be_cmd_resp_hdr hdr;
struct mgmt_session_info session_info;
} __packed;

struct mac_addr {
u16 size_of_struct;
u8 addr[ETH_ALEN];
} __packed;

struct be_cmd_req_get_boot_target {
struct be_cmd_req_hdr hdr;
} __packed;

struct be_cmd_resp_get_boot_target {
struct be_cmd_resp_hdr hdr;
u32 boot_session_count;
int boot_session_handle;
};

struct be_cmd_req_mac_query {
struct be_cmd_req_hdr hdr;
u8 type;
Expand Down Expand Up @@ -426,6 +531,11 @@ int be_poll_mcc(struct be_ctrl_info *ctrl);
int mgmt_check_supported_fw(struct be_ctrl_info *ctrl,
struct beiscsi_hba *phba);
unsigned int be_cmd_get_mac_addr(struct beiscsi_hba *phba);
unsigned int beiscsi_get_boot_target(struct beiscsi_hba *phba);
unsigned int beiscsi_get_session_info(struct beiscsi_hba *phba,
u32 boot_session_handle,
struct be_dma_mem *nonemb_cmd);

void free_mcc_tag(struct be_ctrl_info *ctrl, unsigned int tag);
/*ISCSI Functuions */
int be_cmd_fw_initialize(struct be_ctrl_info *ctrl);
Expand Down Expand Up @@ -601,14 +711,6 @@ struct be_eq_delay_params_in {
struct eq_delay delay[8];
} __packed;

struct ip_address_format {
u16 size_of_structure;
u8 reserved;
u8 ip_type;
u8 ip_address[16];
u32 rsvd0;
} __packed;

struct tcp_connect_and_offload_in {
struct be_cmd_req_hdr hdr;
struct ip_address_format ip_address;
Expand Down Expand Up @@ -688,18 +790,29 @@ struct be_fw_cfg {
u32 function_caps;
} __packed;

#define CMD_ISCSI_COMMAND_INVALIDATE 1
#define ISCSI_OPCODE_SCSI_DATA_OUT 5
struct be_all_if_id {
struct be_cmd_req_hdr hdr;
u32 if_count;
u32 if_hndl_list[1];
} __packed;

#define ISCSI_OPCODE_SCSI_DATA_OUT 5
#define OPCODE_COMMON_MODIFY_EQ_DELAY 41
#define OPCODE_COMMON_ISCSI_CLEANUP 59
#define OPCODE_COMMON_TCP_UPLOAD 56
#define OPCODE_COMMON_ISCSI_TCP_CONNECT_AND_OFFLOAD 70
#define OPCODE_ISCSI_INI_DRIVER_OFFLOAD_SESSION 41
#define OPCODE_COMMON_MODIFY_EQ_DELAY 41
#define OPCODE_COMMON_ISCSI_CLEANUP 59
#define OPCODE_COMMON_TCP_UPLOAD 56
#define OPCODE_COMMON_ISCSI_ERROR_RECOVERY_INVALIDATE_COMMANDS 1
/* --- CMD_ISCSI_INVALIDATE_CONNECTION_TYPE --- */
#define CMD_ISCSI_CONNECTION_INVALIDATE 0x8001
#define CMD_ISCSI_CONNECTION_ISSUE_TCP_RST 0x8002
#define OPCODE_ISCSI_INI_CFG_GET_HBA_NAME 6
#define OPCODE_ISCSI_INI_CFG_SET_HBA_NAME 7
#define OPCODE_ISCSI_INI_SESSION_GET_A_SESSION 14
#define OPCODE_ISCSI_INI_DRIVER_OFFLOAD_SESSION 41
#define OPCODE_ISCSI_INI_DRIVER_INVALIDATE_CONNECTION 42
#define OPCODE_ISCSI_INI_BOOT_GET_BOOT_TARGET 52

/* --- CMD_ISCSI_INVALIDATE_CONNECTION_TYPE --- */
#define CMD_ISCSI_COMMAND_INVALIDATE 1
#define CMD_ISCSI_CONNECTION_INVALIDATE 0x8001
#define CMD_ISCSI_CONNECTION_ISSUE_TCP_RST 0x8002

#define INI_WR_CMD 1 /* Initiator write command */
#define INI_TMF_CMD 2 /* Initiator TMF command */
Expand Down
76 changes: 47 additions & 29 deletions drivers/scsi/be2iscsi/be_iscsi.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -300,40 +300,16 @@ int beiscsi_get_host_param(struct Scsi_Host *shost,
enum iscsi_host_param param, char *buf)
{
struct beiscsi_hba *phba = (struct beiscsi_hba *)iscsi_host_priv(shost);
struct be_cmd_resp_get_mac_addr *resp;
struct be_mcc_wrb *wrb;
unsigned int tag, wrb_num;
int len = 0;
unsigned short status, extd_status;
struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
int status;

SE_DEBUG(DBG_LVL_8, "In beiscsi_get_host_param, param= %d\n", param);
switch (param) {
case ISCSI_HOST_PARAM_HWADDRESS:
tag = be_cmd_get_mac_addr(phba);
if (!tag) {
SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed\n");
return -EAGAIN;
} else
wait_event_interruptible(phba->ctrl.mcc_wait[tag],
phba->ctrl.mcc_numtag[tag]);

wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
if (status || extd_status) {
SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed"
" status = %d extd_status = %d\n",
status, extd_status);
free_mcc_tag(&phba->ctrl, tag);
return -EAGAIN;
} else {
wrb = queue_get_wrb(mccq, wrb_num);
free_mcc_tag(&phba->ctrl, tag);
resp = embedded_payload(wrb);
memcpy(phba->mac_address, resp->mac_address, ETH_ALEN);
len = sysfs_format_mac(buf, phba->mac_address,
ETH_ALEN);
status = beiscsi_get_macaddr(buf, phba);
if (status < 0) {
SE_DEBUG(DBG_LVL_1, "beiscsi_get_macaddr Failed\n");
return status;
}
break;
default:
Expand All @@ -342,6 +318,48 @@ int beiscsi_get_host_param(struct Scsi_Host *shost,
return len;
}

int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
{
struct be_cmd_resp_get_mac_addr *resp;
struct be_mcc_wrb *wrb;
unsigned int tag, wrb_num;
unsigned short status, extd_status;
struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
int rc;

if (phba->read_mac_address)
return sysfs_format_mac(buf, phba->mac_address,
ETH_ALEN);

tag = be_cmd_get_mac_addr(phba);
if (!tag) {
SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed\n");
return -EBUSY;
} else
wait_event_interruptible(phba->ctrl.mcc_wait[tag],
phba->ctrl.mcc_numtag[tag]);

wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
if (status || extd_status) {
SE_DEBUG(DBG_LVL_1, "Failed to get be_cmd_get_mac_addr"
" status = %d extd_status = %d\n",
status, extd_status);
free_mcc_tag(&phba->ctrl, tag);
return -EAGAIN;
}
wrb = queue_get_wrb(mccq, wrb_num);
free_mcc_tag(&phba->ctrl, tag);
resp = embedded_payload(wrb);
memcpy(phba->mac_address, resp->mac_address, ETH_ALEN);
rc = sysfs_format_mac(buf, phba->mac_address,
ETH_ALEN);
phba->read_mac_address = 1;
return rc;
}


/**
* beiscsi_conn_get_stats - get the iscsi stats
* @cls_conn: pointer to iscsi cls conn
Expand Down
2 changes: 2 additions & 0 deletions drivers/scsi/be2iscsi/be_iscsi.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,8 @@ int beiscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
int beiscsi_get_host_param(struct Scsi_Host *shost,
enum iscsi_host_param param, char *buf);

int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba);

int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
enum iscsi_param param, char *buf, int buflen);

Expand Down
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