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scsi: be2iscsi: Fix closing of connection 

CID needs to be freed even when invalidate or upload connection fails.
Attempt to close connection 3 times before freeing CID.

Set cleanup_type to INVALIDATE instead of force TCP_RST.  This
unnecessarily is terminating connection with reset instead of gracefully
closing it.

Set save_cfg to 0 - session not to be saved on flash.

Add delay and process CQ before uploading connection.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Jitendra Bhivare 2017-03-24 14:11:41 +05:30 committed by Martin K. Petersen
parent eb419229be
commit 49fc5152f5
5 changed files with 159 additions and 160 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/scsi/be2iscsi/be.h
View File

@ -154,7 +154,6 @@ struct be_ctrl_info {
#define PAGE_SHIFT_4K 12
#define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
#define mcc_timeout 120000 /* 12s timeout */
#define BEISCSI_LOGOUT_SYNC_DELAY 250
/* Returns number of pages spanned by the data starting at the given addr */
#define PAGES_4K_SPANNED(_address, size) \

63
drivers/scsi/be2iscsi/be_cmds.h
View File

@ -1145,24 +1145,49 @@ struct tcp_connect_and_offload_out {
#define DB_DEF_PDU_EVENT_SHIFT 15
#define DB_DEF_PDU_CQPROC_SHIFT 16
struct dmsg_cqe {
u32 dw[4];
struct be_invalidate_connection_params_in {
struct be_cmd_req_hdr hdr;
u32 session_handle;
u16 cid;
u16 unused;
#define BE_CLEANUP_TYPE_INVALIDATE 0x8001
#define BE_CLEANUP_TYPE_ISSUE_TCP_RST 0x8002
u16 cleanup_type;
u16 save_cfg;
} __packed;
struct tcp_upload_params_in {
struct be_invalidate_connection_params_out {
u32 session_handle;
u16 cid;
u16 unused;
} __packed;
union be_invalidate_connection_params {
struct be_invalidate_connection_params_in req;
struct be_invalidate_connection_params_out resp;
} __packed;
struct be_tcp_upload_params_in {
struct be_cmd_req_hdr hdr;
u16 id;
#define BE_UPLOAD_TYPE_GRACEFUL 1
/* abortive upload with reset */
#define BE_UPLOAD_TYPE_ABORT_RESET 2
/* abortive upload without reset */
#define BE_UPLOAD_TYPE_ABORT 3
/* abortive upload with reset, sequence number by driver */
#define BE_UPLOAD_TYPE_ABORT_WITH_SEQ 4
u16 upload_type;
u32 reset_seq;
} __packed;
struct tcp_upload_params_out {
struct be_tcp_upload_params_out {
u32 dw[32];
} __packed;
union tcp_upload_params {
struct tcp_upload_params_in request;
struct tcp_upload_params_out response;
union be_tcp_upload_params {
struct be_tcp_upload_params_in request;
struct be_tcp_upload_params_out response;
} __packed;
struct be_ulp_fw_cfg {
@ -1243,10 +1268,7 @@ struct be_cmd_get_port_name {
#define OPCODE_COMMON_WRITE_FLASH 96
#define OPCODE_COMMON_READ_FLASH 97
/* --- 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 */
@ -1269,27 +1291,6 @@ struct be_cmd_get_port_name {
* preparedby
* driver should not be touched
*/
/* --- CMD_CHUTE_TYPE --- */
#define CMD_CONNECTION_CHUTE_0 1
#define CMD_CONNECTION_CHUTE_1 2
#define CMD_CONNECTION_CHUTE_2 3
#define EQ_MAJOR_CODE_COMPLETION 0
#define CMD_ISCSI_SESSION_DEL_CFG_FROM_FLASH 0
#define CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH 1
/* --- CONNECTION_UPLOAD_PARAMS --- */
/* These parameters are used to define the type of upload desired. */
#define CONNECTION_UPLOAD_GRACEFUL 1 /* Graceful upload */
#define CONNECTION_UPLOAD_ABORT_RESET 2 /* Abortive upload with
* reset
*/
#define CONNECTION_UPLOAD_ABORT 3 /* Abortive upload without
* reset
*/
#define CONNECTION_UPLOAD_ABORT_WITH_SEQ 4 /* Abortive upload with reset,
* sequence number by driver */
/* Returns the number of items in the field array. */
#define BE_NUMBER_OF_FIELD(_type_, _field_) \

98
drivers/scsi/be2iscsi/be_iscsi.c
View File

@ -1263,31 +1263,58 @@ static void beiscsi_flush_cq(struct beiscsi_hba *phba)
}
/**
* beiscsi_close_conn - Upload the connection
* beiscsi_conn_close - Invalidate and upload connection
* @ep: The iscsi endpoint
* @flag: The type of connection closure
*
* Returns 0 on success, -1 on failure.
*/
static int beiscsi_close_conn(struct beiscsi_endpoint *beiscsi_ep, int flag)
static int beiscsi_conn_close(struct beiscsi_endpoint *beiscsi_ep)
{
int ret = 0;
unsigned int tag;
struct beiscsi_hba *phba = beiscsi_ep->phba;
unsigned int tag, attempts;
int ret;
tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
if (!tag) {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BS_%d : upload failed for cid 0x%x\n",
beiscsi_ep->ep_cid);
ret = -EAGAIN;
/**
* Without successfully invalidating and uploading connection
* driver can't reuse the CID so attempt more than once.
*/
attempts = 0;
while (attempts++ < 3) {
tag = beiscsi_invalidate_cxn(phba, beiscsi_ep);
if (tag) {
ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
if (!ret)
break;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BS_%d : invalidate conn failed cid %d\n",
beiscsi_ep->ep_cid);
}
}
ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
/* Flush the CQ entries */
/* wait for all completions to arrive, then process them */
msleep(250);
/* flush CQ entries */
beiscsi_flush_cq(phba);
return ret;
if (attempts > 3)
return -1;
attempts = 0;
while (attempts++ < 3) {
tag = beiscsi_upload_cxn(phba, beiscsi_ep);
if (tag) {
ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
if (!ret)
break;
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BS_%d : upload conn failed cid %d\n",
beiscsi_ep->ep_cid);
}
}
if (attempts > 3)
return -1;
return 0;
}
/**
@ -1298,12 +1325,9 @@ static int beiscsi_close_conn(struct beiscsi_endpoint *beiscsi_ep, int flag)
*/
void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
{
struct beiscsi_conn *beiscsi_conn;
struct beiscsi_endpoint *beiscsi_ep;
struct beiscsi_conn *beiscsi_conn;
struct beiscsi_hba *phba;
unsigned int tag;
uint8_t mgmt_invalidate_flag, tcp_upload_flag;
unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
uint16_t cri_index;
beiscsi_ep = ep->dd_data;
@ -1324,39 +1348,27 @@ void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
if (beiscsi_ep->conn) {
beiscsi_conn = beiscsi_ep->conn;
iscsi_suspend_queue(beiscsi_conn->conn);
mgmt_invalidate_flag = ~BEISCSI_NO_RST_ISSUE;
tcp_upload_flag = CONNECTION_UPLOAD_GRACEFUL;
} else {
mgmt_invalidate_flag = BEISCSI_NO_RST_ISSUE;
tcp_upload_flag = CONNECTION_UPLOAD_ABORT;
}
if (!beiscsi_hba_is_online(phba)) {
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
"BS_%d : HBA in error 0x%lx\n", phba->state);
goto free_ep;
} else {
/**
* Make CID available even if close fails.
* If not freed, FW might fail open using the CID.
*/
if (beiscsi_conn_close(beiscsi_ep) < 0)
__beiscsi_log(phba, KERN_ERR,
"BS_%d : close conn failed cid %d\n",
beiscsi_ep->ep_cid);
}
tag = mgmt_invalidate_connection(phba, beiscsi_ep,
beiscsi_ep->ep_cid,
mgmt_invalidate_flag,
savecfg_flag);
if (!tag) {
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
"BS_%d : mgmt_invalidate_connection Failed for cid=%d\n",
beiscsi_ep->ep_cid);
}
beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
free_ep:
msleep(BEISCSI_LOGOUT_SYNC_DELAY);
beiscsi_free_ep(beiscsi_ep);
if (!phba->conn_table[cri_index])
__beiscsi_log(phba, KERN_ERR,
"BS_%d : conn_table empty at %u: cid %u\n",
cri_index,
beiscsi_ep->ep_cid);
"BS_%d : conn_table empty at %u: cid %u\n",
cri_index, beiscsi_ep->ep_cid);
phba->conn_table[cri_index] = NULL;
iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
}

127
drivers/scsi/be2iscsi/be_mgmt.c
View File

@ -126,67 +126,6 @@ unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
return tag;
}
unsigned int mgmt_invalidate_connection(struct beiscsi_hba *phba,
struct beiscsi_endpoint *beiscsi_ep,
unsigned short cid,
unsigned short issue_reset,
unsigned short savecfg_flag)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
struct be_mcc_wrb *wrb;
struct iscsi_invalidate_connection_params_in *req;
unsigned int tag = 0;
mutex_lock(&ctrl->mbox_lock);
wrb = alloc_mcc_wrb(phba, &tag);
if (!wrb) {
mutex_unlock(&ctrl->mbox_lock);
return 0;
}
req = embedded_payload(wrb);
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
OPCODE_ISCSI_INI_DRIVER_INVALIDATE_CONNECTION,
sizeof(*req));
req->session_handle = beiscsi_ep->fw_handle;
req->cid = cid;
if (issue_reset)
req->cleanup_type = CMD_ISCSI_CONNECTION_ISSUE_TCP_RST;
else
req->cleanup_type = CMD_ISCSI_CONNECTION_INVALIDATE;
req->save_cfg = savecfg_flag;
be_mcc_notify(phba, tag);
mutex_unlock(&ctrl->mbox_lock);
return tag;
}
unsigned int mgmt_upload_connection(struct beiscsi_hba *phba,
unsigned short cid, unsigned int upload_flag)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
struct be_mcc_wrb *wrb;
struct tcp_upload_params_in *req;
unsigned int tag;
mutex_lock(&ctrl->mbox_lock);
wrb = alloc_mcc_wrb(phba, &tag);
if (!wrb) {
mutex_unlock(&ctrl->mbox_lock);
return 0;
}
req = embedded_payload(wrb);
be_wrb_hdr_prepare(wrb, sizeof(*req), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_COMMON_TCP_UPLOAD,
OPCODE_COMMON_TCP_UPLOAD, sizeof(*req));
req->id = (unsigned short)cid;
req->upload_type = (unsigned char)upload_flag;
be_mcc_notify(phba, tag);
mutex_unlock(&ctrl->mbox_lock);
return tag;
}
/**
* mgmt_open_connection()- Establish a TCP CXN
* @dst_addr: Destination Address
@ -1449,6 +1388,72 @@ void beiscsi_offload_cxn_v2(struct beiscsi_offload_params *params,
exp_statsn) / 32] + 1));
}
unsigned int beiscsi_invalidate_cxn(struct beiscsi_hba *phba,
struct beiscsi_endpoint *beiscsi_ep)
{
struct be_invalidate_connection_params_in *req;
struct be_ctrl_info *ctrl = &phba->ctrl;
struct be_mcc_wrb *wrb;
unsigned int tag = 0;
mutex_lock(&ctrl->mbox_lock);
wrb = alloc_mcc_wrb(phba, &tag);
if (!wrb) {
mutex_unlock(&ctrl->mbox_lock);
return 0;
}
req = embedded_payload(wrb);
be_wrb_hdr_prepare(wrb, sizeof(union be_invalidate_connection_params),
true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_ISCSI_INI,
OPCODE_ISCSI_INI_DRIVER_INVALIDATE_CONNECTION,
sizeof(*req));
req->session_handle = beiscsi_ep->fw_handle;
req->cid = beiscsi_ep->ep_cid;
if (beiscsi_ep->conn)
req->cleanup_type = BE_CLEANUP_TYPE_INVALIDATE;
else
req->cleanup_type = BE_CLEANUP_TYPE_ISSUE_TCP_RST;
/**
* 0 - non-persistent targets
* 1 - save session info on flash
*/
req->save_cfg = 0;
be_mcc_notify(phba, tag);
mutex_unlock(&ctrl->mbox_lock);
return tag;
}
unsigned int beiscsi_upload_cxn(struct beiscsi_hba *phba,
struct beiscsi_endpoint *beiscsi_ep)
{
struct be_ctrl_info *ctrl = &phba->ctrl;
struct be_mcc_wrb *wrb;
struct be_tcp_upload_params_in *req;
unsigned int tag;
mutex_lock(&ctrl->mbox_lock);
wrb = alloc_mcc_wrb(phba, &tag);
if (!wrb) {
mutex_unlock(&ctrl->mbox_lock);
return 0;
}
req = embedded_payload(wrb);
be_wrb_hdr_prepare(wrb, sizeof(union be_tcp_upload_params), true, 0);
be_cmd_hdr_prepare(&req->hdr, CMD_COMMON_TCP_UPLOAD,
OPCODE_COMMON_TCP_UPLOAD, sizeof(*req));
req->id = beiscsi_ep->ep_cid;
if (beiscsi_ep->conn)
req->upload_type = BE_UPLOAD_TYPE_GRACEFUL;
else
req->upload_type = BE_UPLOAD_TYPE_ABORT;
be_mcc_notify(phba, tag);
mutex_unlock(&ctrl->mbox_lock);
return tag;
}
int beiscsi_mgmt_invalidate_icds(struct beiscsi_hba *phba,
struct invldt_cmd_tbl *inv_tbl,
unsigned int nents)

30
drivers/scsi/be2iscsi/be_mgmt.h
View File

@ -41,35 +41,11 @@ int mgmt_open_connection(struct beiscsi_hba *phba,
struct beiscsi_endpoint *beiscsi_ep,
struct be_dma_mem *nonemb_cmd);
unsigned int mgmt_upload_connection(struct beiscsi_hba *phba,
unsigned short cid,
unsigned int upload_flag);
unsigned int mgmt_vendor_specific_fw_cmd(struct be_ctrl_info *ctrl,
struct beiscsi_hba *phba,
struct bsg_job *job,
struct be_dma_mem *nonemb_cmd);
#define BEISCSI_NO_RST_ISSUE 0
struct iscsi_invalidate_connection_params_in {
struct be_cmd_req_hdr hdr;
unsigned int session_handle;
unsigned short cid;
unsigned short unused;
unsigned short cleanup_type;
unsigned short save_cfg;
} __packed;
struct iscsi_invalidate_connection_params_out {
unsigned int session_handle;
unsigned short cid;
unsigned short unused;
} __packed;
union iscsi_invalidate_connection_params {
struct iscsi_invalidate_connection_params_in request;
struct iscsi_invalidate_connection_params_out response;
} __packed;
#define BE_INVLDT_CMD_TBL_SZ 128
struct invldt_cmd_tbl {
unsigned short icd;
@ -265,6 +241,12 @@ void beiscsi_offload_cxn_v2(struct beiscsi_offload_params *params,
struct wrb_handle *pwrb_handle,
struct hwi_wrb_context *pwrb_context);
unsigned int beiscsi_invalidate_cxn(struct beiscsi_hba *phba,
struct beiscsi_endpoint *beiscsi_ep);
unsigned int beiscsi_upload_cxn(struct beiscsi_hba *phba,
struct beiscsi_endpoint *beiscsi_ep);
int be_cmd_modify_eq_delay(struct beiscsi_hba *phba,
struct be_set_eqd *, int num);