mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 01:41:39 +00:00
![Mike Christie](/assets/img/avatar_default.png)
bnx2i has some checks to try and make sure the ep is not destroyed while the addr/port is getting read. However, if after this check: if (!(bnx2i_conn && bnx2i_conn->ep && bnx2i_conn->ep->hba)) goto out; bnx2i_conn->ep is cleared by ep_disconnect then we will oops. This patches fixes the problem by having the driver use the get_ep_param callback instead of get_conn_param. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2222 lines
60 KiB
C
2222 lines
60 KiB
C
/*
|
|
* bnx2i_iscsi.c: Broadcom NetXtreme II iSCSI driver.
|
|
*
|
|
* Copyright (c) 2006 - 2010 Broadcom Corporation
|
|
* Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved.
|
|
* Copyright (c) 2007, 2008 Mike Christie
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation.
|
|
*
|
|
* Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
|
|
* Maintained by: Eddie Wai (eddie.wai@broadcom.com)
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include <scsi/scsi_tcq.h>
|
|
#include <scsi/libiscsi.h>
|
|
#include "bnx2i.h"
|
|
|
|
struct scsi_transport_template *bnx2i_scsi_xport_template;
|
|
struct iscsi_transport bnx2i_iscsi_transport;
|
|
static struct scsi_host_template bnx2i_host_template;
|
|
|
|
/*
|
|
* Global endpoint resource info
|
|
*/
|
|
static DEFINE_SPINLOCK(bnx2i_resc_lock); /* protects global resources */
|
|
|
|
|
|
static int bnx2i_adapter_ready(struct bnx2i_hba *hba)
|
|
{
|
|
int retval = 0;
|
|
|
|
if (!hba || !test_bit(ADAPTER_STATE_UP, &hba->adapter_state) ||
|
|
test_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state) ||
|
|
test_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state))
|
|
retval = -EPERM;
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_get_write_cmd_bd_idx - identifies various BD bookmarks
|
|
* @cmd: iscsi cmd struct pointer
|
|
* @buf_off: absolute buffer offset
|
|
* @start_bd_off: u32 pointer to return the offset within the BD
|
|
* indicated by 'start_bd_idx' on which 'buf_off' falls
|
|
* @start_bd_idx: index of the BD on which 'buf_off' falls
|
|
*
|
|
* identifies & marks various bd info for scsi command's imm data,
|
|
* unsolicited data and the first solicited data seq.
|
|
*/
|
|
static void bnx2i_get_write_cmd_bd_idx(struct bnx2i_cmd *cmd, u32 buf_off,
|
|
u32 *start_bd_off, u32 *start_bd_idx)
|
|
{
|
|
struct iscsi_bd *bd_tbl = cmd->io_tbl.bd_tbl;
|
|
u32 cur_offset = 0;
|
|
u32 cur_bd_idx = 0;
|
|
|
|
if (buf_off) {
|
|
while (buf_off >= (cur_offset + bd_tbl->buffer_length)) {
|
|
cur_offset += bd_tbl->buffer_length;
|
|
cur_bd_idx++;
|
|
bd_tbl++;
|
|
}
|
|
}
|
|
|
|
*start_bd_off = buf_off - cur_offset;
|
|
*start_bd_idx = cur_bd_idx;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_setup_write_cmd_bd_info - sets up BD various information
|
|
* @task: transport layer's cmd struct pointer
|
|
*
|
|
* identifies & marks various bd info for scsi command's immediate data,
|
|
* unsolicited data and first solicited data seq which includes BD start
|
|
* index & BD buf off. his function takes into account iscsi parameter such
|
|
* as immediate data and unsolicited data is support on this connection.
|
|
*/
|
|
static void bnx2i_setup_write_cmd_bd_info(struct iscsi_task *task)
|
|
{
|
|
struct bnx2i_cmd *cmd = task->dd_data;
|
|
u32 start_bd_offset;
|
|
u32 start_bd_idx;
|
|
u32 buffer_offset = 0;
|
|
u32 cmd_len = cmd->req.total_data_transfer_length;
|
|
|
|
/* if ImmediateData is turned off & IntialR2T is turned on,
|
|
* there will be no immediate or unsolicited data, just return.
|
|
*/
|
|
if (!iscsi_task_has_unsol_data(task) && !task->imm_count)
|
|
return;
|
|
|
|
/* Immediate data */
|
|
buffer_offset += task->imm_count;
|
|
if (task->imm_count == cmd_len)
|
|
return;
|
|
|
|
if (iscsi_task_has_unsol_data(task)) {
|
|
bnx2i_get_write_cmd_bd_idx(cmd, buffer_offset,
|
|
&start_bd_offset, &start_bd_idx);
|
|
cmd->req.ud_buffer_offset = start_bd_offset;
|
|
cmd->req.ud_start_bd_index = start_bd_idx;
|
|
buffer_offset += task->unsol_r2t.data_length;
|
|
}
|
|
|
|
if (buffer_offset != cmd_len) {
|
|
bnx2i_get_write_cmd_bd_idx(cmd, buffer_offset,
|
|
&start_bd_offset, &start_bd_idx);
|
|
if ((start_bd_offset > task->conn->session->first_burst) ||
|
|
(start_bd_idx > scsi_sg_count(cmd->scsi_cmd))) {
|
|
int i = 0;
|
|
|
|
iscsi_conn_printk(KERN_ALERT, task->conn,
|
|
"bnx2i- error, buf offset 0x%x "
|
|
"bd_valid %d use_sg %d\n",
|
|
buffer_offset, cmd->io_tbl.bd_valid,
|
|
scsi_sg_count(cmd->scsi_cmd));
|
|
for (i = 0; i < cmd->io_tbl.bd_valid; i++)
|
|
iscsi_conn_printk(KERN_ALERT, task->conn,
|
|
"bnx2i err, bd[%d]: len %x\n",
|
|
i, cmd->io_tbl.bd_tbl[i].\
|
|
buffer_length);
|
|
}
|
|
cmd->req.sd_buffer_offset = start_bd_offset;
|
|
cmd->req.sd_start_bd_index = start_bd_idx;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* bnx2i_map_scsi_sg - maps IO buffer and prepares the BD table
|
|
* @hba: adapter instance
|
|
* @cmd: iscsi cmd struct pointer
|
|
*
|
|
* map SG list
|
|
*/
|
|
static int bnx2i_map_scsi_sg(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd)
|
|
{
|
|
struct scsi_cmnd *sc = cmd->scsi_cmd;
|
|
struct iscsi_bd *bd = cmd->io_tbl.bd_tbl;
|
|
struct scatterlist *sg;
|
|
int byte_count = 0;
|
|
int bd_count = 0;
|
|
int sg_count;
|
|
int sg_len;
|
|
u64 addr;
|
|
int i;
|
|
|
|
BUG_ON(scsi_sg_count(sc) > ISCSI_MAX_BDS_PER_CMD);
|
|
|
|
sg_count = scsi_dma_map(sc);
|
|
|
|
scsi_for_each_sg(sc, sg, sg_count, i) {
|
|
sg_len = sg_dma_len(sg);
|
|
addr = (u64) sg_dma_address(sg);
|
|
bd[bd_count].buffer_addr_lo = addr & 0xffffffff;
|
|
bd[bd_count].buffer_addr_hi = addr >> 32;
|
|
bd[bd_count].buffer_length = sg_len;
|
|
bd[bd_count].flags = 0;
|
|
if (bd_count == 0)
|
|
bd[bd_count].flags = ISCSI_BD_FIRST_IN_BD_CHAIN;
|
|
|
|
byte_count += sg_len;
|
|
bd_count++;
|
|
}
|
|
|
|
if (bd_count)
|
|
bd[bd_count - 1].flags |= ISCSI_BD_LAST_IN_BD_CHAIN;
|
|
|
|
BUG_ON(byte_count != scsi_bufflen(sc));
|
|
return bd_count;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_iscsi_map_sg_list - maps SG list
|
|
* @cmd: iscsi cmd struct pointer
|
|
*
|
|
* creates BD list table for the command
|
|
*/
|
|
static void bnx2i_iscsi_map_sg_list(struct bnx2i_cmd *cmd)
|
|
{
|
|
int bd_count;
|
|
|
|
bd_count = bnx2i_map_scsi_sg(cmd->conn->hba, cmd);
|
|
if (!bd_count) {
|
|
struct iscsi_bd *bd = cmd->io_tbl.bd_tbl;
|
|
|
|
bd[0].buffer_addr_lo = bd[0].buffer_addr_hi = 0;
|
|
bd[0].buffer_length = bd[0].flags = 0;
|
|
}
|
|
cmd->io_tbl.bd_valid = bd_count;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_iscsi_unmap_sg_list - unmaps SG list
|
|
* @cmd: iscsi cmd struct pointer
|
|
*
|
|
* unmap IO buffers and invalidate the BD table
|
|
*/
|
|
void bnx2i_iscsi_unmap_sg_list(struct bnx2i_cmd *cmd)
|
|
{
|
|
struct scsi_cmnd *sc = cmd->scsi_cmd;
|
|
|
|
if (cmd->io_tbl.bd_valid && sc) {
|
|
scsi_dma_unmap(sc);
|
|
cmd->io_tbl.bd_valid = 0;
|
|
}
|
|
}
|
|
|
|
static void bnx2i_setup_cmd_wqe_template(struct bnx2i_cmd *cmd)
|
|
{
|
|
memset(&cmd->req, 0x00, sizeof(cmd->req));
|
|
cmd->req.op_code = 0xFF;
|
|
cmd->req.bd_list_addr_lo = (u32) cmd->io_tbl.bd_tbl_dma;
|
|
cmd->req.bd_list_addr_hi =
|
|
(u32) ((u64) cmd->io_tbl.bd_tbl_dma >> 32);
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_bind_conn_to_iscsi_cid - bind conn structure to 'iscsi_cid'
|
|
* @hba: pointer to adapter instance
|
|
* @conn: pointer to iscsi connection
|
|
* @iscsi_cid: iscsi context ID, range 0 - (MAX_CONN - 1)
|
|
*
|
|
* update iscsi cid table entry with connection pointer. This enables
|
|
* driver to quickly get hold of connection structure pointer in
|
|
* completion/interrupt thread using iscsi context ID
|
|
*/
|
|
static int bnx2i_bind_conn_to_iscsi_cid(struct bnx2i_hba *hba,
|
|
struct bnx2i_conn *bnx2i_conn,
|
|
u32 iscsi_cid)
|
|
{
|
|
if (hba && hba->cid_que.conn_cid_tbl[iscsi_cid]) {
|
|
iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data,
|
|
"conn bind - entry #%d not free\n", iscsi_cid);
|
|
return -EBUSY;
|
|
}
|
|
|
|
hba->cid_que.conn_cid_tbl[iscsi_cid] = bnx2i_conn;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_get_conn_from_id - maps an iscsi cid to corresponding conn ptr
|
|
* @hba: pointer to adapter instance
|
|
* @iscsi_cid: iscsi context ID, range 0 - (MAX_CONN - 1)
|
|
*/
|
|
struct bnx2i_conn *bnx2i_get_conn_from_id(struct bnx2i_hba *hba,
|
|
u16 iscsi_cid)
|
|
{
|
|
if (!hba->cid_que.conn_cid_tbl) {
|
|
printk(KERN_ERR "bnx2i: ERROR - missing conn<->cid table\n");
|
|
return NULL;
|
|
|
|
} else if (iscsi_cid >= hba->max_active_conns) {
|
|
printk(KERN_ERR "bnx2i: wrong cid #%d\n", iscsi_cid);
|
|
return NULL;
|
|
}
|
|
return hba->cid_que.conn_cid_tbl[iscsi_cid];
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_alloc_iscsi_cid - allocates a iscsi_cid from free pool
|
|
* @hba: pointer to adapter instance
|
|
*/
|
|
static u32 bnx2i_alloc_iscsi_cid(struct bnx2i_hba *hba)
|
|
{
|
|
int idx;
|
|
|
|
if (!hba->cid_que.cid_free_cnt)
|
|
return -1;
|
|
|
|
idx = hba->cid_que.cid_q_cons_idx;
|
|
hba->cid_que.cid_q_cons_idx++;
|
|
if (hba->cid_que.cid_q_cons_idx == hba->cid_que.cid_q_max_idx)
|
|
hba->cid_que.cid_q_cons_idx = 0;
|
|
|
|
hba->cid_que.cid_free_cnt--;
|
|
return hba->cid_que.cid_que[idx];
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_free_iscsi_cid - returns tcp port to free list
|
|
* @hba: pointer to adapter instance
|
|
* @iscsi_cid: iscsi context ID to free
|
|
*/
|
|
static void bnx2i_free_iscsi_cid(struct bnx2i_hba *hba, u16 iscsi_cid)
|
|
{
|
|
int idx;
|
|
|
|
if (iscsi_cid == (u16) -1)
|
|
return;
|
|
|
|
hba->cid_que.cid_free_cnt++;
|
|
|
|
idx = hba->cid_que.cid_q_prod_idx;
|
|
hba->cid_que.cid_que[idx] = iscsi_cid;
|
|
hba->cid_que.conn_cid_tbl[iscsi_cid] = NULL;
|
|
hba->cid_que.cid_q_prod_idx++;
|
|
if (hba->cid_que.cid_q_prod_idx == hba->cid_que.cid_q_max_idx)
|
|
hba->cid_que.cid_q_prod_idx = 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_setup_free_cid_que - sets up free iscsi cid queue
|
|
* @hba: pointer to adapter instance
|
|
*
|
|
* allocates memory for iscsi cid queue & 'cid - conn ptr' mapping table,
|
|
* and initialize table attributes
|
|
*/
|
|
static int bnx2i_setup_free_cid_que(struct bnx2i_hba *hba)
|
|
{
|
|
int mem_size;
|
|
int i;
|
|
|
|
mem_size = hba->max_active_conns * sizeof(u32);
|
|
mem_size = (mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
|
|
|
|
hba->cid_que.cid_que_base = kmalloc(mem_size, GFP_KERNEL);
|
|
if (!hba->cid_que.cid_que_base)
|
|
return -ENOMEM;
|
|
|
|
mem_size = hba->max_active_conns * sizeof(struct bnx2i_conn *);
|
|
mem_size = (mem_size + (PAGE_SIZE - 1)) & PAGE_MASK;
|
|
hba->cid_que.conn_cid_tbl = kmalloc(mem_size, GFP_KERNEL);
|
|
if (!hba->cid_que.conn_cid_tbl) {
|
|
kfree(hba->cid_que.cid_que_base);
|
|
hba->cid_que.cid_que_base = NULL;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
hba->cid_que.cid_que = (u32 *)hba->cid_que.cid_que_base;
|
|
hba->cid_que.cid_q_prod_idx = 0;
|
|
hba->cid_que.cid_q_cons_idx = 0;
|
|
hba->cid_que.cid_q_max_idx = hba->max_active_conns;
|
|
hba->cid_que.cid_free_cnt = hba->max_active_conns;
|
|
|
|
for (i = 0; i < hba->max_active_conns; i++) {
|
|
hba->cid_que.cid_que[i] = i;
|
|
hba->cid_que.conn_cid_tbl[i] = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_release_free_cid_que - releases 'iscsi_cid' queue resources
|
|
* @hba: pointer to adapter instance
|
|
*/
|
|
static void bnx2i_release_free_cid_que(struct bnx2i_hba *hba)
|
|
{
|
|
kfree(hba->cid_que.cid_que_base);
|
|
hba->cid_que.cid_que_base = NULL;
|
|
|
|
kfree(hba->cid_que.conn_cid_tbl);
|
|
hba->cid_que.conn_cid_tbl = NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_alloc_ep - allocates ep structure from global pool
|
|
* @hba: pointer to adapter instance
|
|
*
|
|
* routine allocates a free endpoint structure from global pool and
|
|
* a tcp port to be used for this connection. Global resource lock,
|
|
* 'bnx2i_resc_lock' is held while accessing shared global data structures
|
|
*/
|
|
static struct iscsi_endpoint *bnx2i_alloc_ep(struct bnx2i_hba *hba)
|
|
{
|
|
struct iscsi_endpoint *ep;
|
|
struct bnx2i_endpoint *bnx2i_ep;
|
|
|
|
ep = iscsi_create_endpoint(sizeof(*bnx2i_ep));
|
|
if (!ep) {
|
|
printk(KERN_ERR "bnx2i: Could not allocate ep\n");
|
|
return NULL;
|
|
}
|
|
|
|
bnx2i_ep = ep->dd_data;
|
|
bnx2i_ep->cls_ep = ep;
|
|
INIT_LIST_HEAD(&bnx2i_ep->link);
|
|
bnx2i_ep->state = EP_STATE_IDLE;
|
|
bnx2i_ep->ep_iscsi_cid = (u16) -1;
|
|
bnx2i_ep->hba = hba;
|
|
bnx2i_ep->hba_age = hba->age;
|
|
hba->ofld_conns_active++;
|
|
init_waitqueue_head(&bnx2i_ep->ofld_wait);
|
|
return ep;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_free_ep - free endpoint
|
|
* @ep: pointer to iscsi endpoint structure
|
|
*/
|
|
static void bnx2i_free_ep(struct iscsi_endpoint *ep)
|
|
{
|
|
struct bnx2i_endpoint *bnx2i_ep = ep->dd_data;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&bnx2i_resc_lock, flags);
|
|
bnx2i_ep->state = EP_STATE_IDLE;
|
|
bnx2i_ep->hba->ofld_conns_active--;
|
|
|
|
if (bnx2i_ep->ep_iscsi_cid != (u16) -1)
|
|
bnx2i_free_iscsi_cid(bnx2i_ep->hba, bnx2i_ep->ep_iscsi_cid);
|
|
|
|
if (bnx2i_ep->conn) {
|
|
bnx2i_ep->conn->ep = NULL;
|
|
bnx2i_ep->conn = NULL;
|
|
}
|
|
|
|
bnx2i_ep->hba = NULL;
|
|
spin_unlock_irqrestore(&bnx2i_resc_lock, flags);
|
|
iscsi_destroy_endpoint(ep);
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_alloc_bdt - allocates buffer descriptor (BD) table for the command
|
|
* @hba: adapter instance pointer
|
|
* @session: iscsi session pointer
|
|
* @cmd: iscsi command structure
|
|
*/
|
|
static int bnx2i_alloc_bdt(struct bnx2i_hba *hba, struct iscsi_session *session,
|
|
struct bnx2i_cmd *cmd)
|
|
{
|
|
struct io_bdt *io = &cmd->io_tbl;
|
|
struct iscsi_bd *bd;
|
|
|
|
io->bd_tbl = dma_alloc_coherent(&hba->pcidev->dev,
|
|
ISCSI_MAX_BDS_PER_CMD * sizeof(*bd),
|
|
&io->bd_tbl_dma, GFP_KERNEL);
|
|
if (!io->bd_tbl) {
|
|
iscsi_session_printk(KERN_ERR, session, "Could not "
|
|
"allocate bdt.\n");
|
|
return -ENOMEM;
|
|
}
|
|
io->bd_valid = 0;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_destroy_cmd_pool - destroys iscsi command pool and release BD table
|
|
* @hba: adapter instance pointer
|
|
* @session: iscsi session pointer
|
|
* @cmd: iscsi command structure
|
|
*/
|
|
static void bnx2i_destroy_cmd_pool(struct bnx2i_hba *hba,
|
|
struct iscsi_session *session)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < session->cmds_max; i++) {
|
|
struct iscsi_task *task = session->cmds[i];
|
|
struct bnx2i_cmd *cmd = task->dd_data;
|
|
|
|
if (cmd->io_tbl.bd_tbl)
|
|
dma_free_coherent(&hba->pcidev->dev,
|
|
ISCSI_MAX_BDS_PER_CMD *
|
|
sizeof(struct iscsi_bd),
|
|
cmd->io_tbl.bd_tbl,
|
|
cmd->io_tbl.bd_tbl_dma);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_setup_cmd_pool - sets up iscsi command pool for the session
|
|
* @hba: adapter instance pointer
|
|
* @session: iscsi session pointer
|
|
*/
|
|
static int bnx2i_setup_cmd_pool(struct bnx2i_hba *hba,
|
|
struct iscsi_session *session)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < session->cmds_max; i++) {
|
|
struct iscsi_task *task = session->cmds[i];
|
|
struct bnx2i_cmd *cmd = task->dd_data;
|
|
|
|
task->hdr = &cmd->hdr;
|
|
task->hdr_max = sizeof(struct iscsi_hdr);
|
|
|
|
if (bnx2i_alloc_bdt(hba, session, cmd))
|
|
goto free_bdts;
|
|
}
|
|
|
|
return 0;
|
|
|
|
free_bdts:
|
|
bnx2i_destroy_cmd_pool(hba, session);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_setup_mp_bdt - allocate BD table resources
|
|
* @hba: pointer to adapter structure
|
|
*
|
|
* Allocate memory for dummy buffer and associated BD
|
|
* table to be used by middle path (MP) requests
|
|
*/
|
|
static int bnx2i_setup_mp_bdt(struct bnx2i_hba *hba)
|
|
{
|
|
int rc = 0;
|
|
struct iscsi_bd *mp_bdt;
|
|
u64 addr;
|
|
|
|
hba->mp_bd_tbl = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
&hba->mp_bd_dma, GFP_KERNEL);
|
|
if (!hba->mp_bd_tbl) {
|
|
printk(KERN_ERR "unable to allocate Middle Path BDT\n");
|
|
rc = -1;
|
|
goto out;
|
|
}
|
|
|
|
hba->dummy_buffer = dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
&hba->dummy_buf_dma, GFP_KERNEL);
|
|
if (!hba->dummy_buffer) {
|
|
printk(KERN_ERR "unable to alloc Middle Path Dummy Buffer\n");
|
|
dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
hba->mp_bd_tbl, hba->mp_bd_dma);
|
|
hba->mp_bd_tbl = NULL;
|
|
rc = -1;
|
|
goto out;
|
|
}
|
|
|
|
mp_bdt = (struct iscsi_bd *) hba->mp_bd_tbl;
|
|
addr = (unsigned long) hba->dummy_buf_dma;
|
|
mp_bdt->buffer_addr_lo = addr & 0xffffffff;
|
|
mp_bdt->buffer_addr_hi = addr >> 32;
|
|
mp_bdt->buffer_length = PAGE_SIZE;
|
|
mp_bdt->flags = ISCSI_BD_LAST_IN_BD_CHAIN |
|
|
ISCSI_BD_FIRST_IN_BD_CHAIN;
|
|
out:
|
|
return rc;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_free_mp_bdt - releases ITT back to free pool
|
|
* @hba: pointer to adapter instance
|
|
*
|
|
* free MP dummy buffer and associated BD table
|
|
*/
|
|
static void bnx2i_free_mp_bdt(struct bnx2i_hba *hba)
|
|
{
|
|
if (hba->mp_bd_tbl) {
|
|
dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
hba->mp_bd_tbl, hba->mp_bd_dma);
|
|
hba->mp_bd_tbl = NULL;
|
|
}
|
|
if (hba->dummy_buffer) {
|
|
dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
hba->dummy_buffer, hba->dummy_buf_dma);
|
|
hba->dummy_buffer = NULL;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_drop_session - notifies iscsid of connection error.
|
|
* @hba: adapter instance pointer
|
|
* @session: iscsi session pointer
|
|
*
|
|
* This notifies iscsid that there is a error, so it can initiate
|
|
* recovery.
|
|
*
|
|
* This relies on caller using the iscsi class iterator so the object
|
|
* is refcounted and does not disapper from under us.
|
|
*/
|
|
void bnx2i_drop_session(struct iscsi_cls_session *cls_session)
|
|
{
|
|
iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
|
|
}
|
|
|
|
/**
|
|
* bnx2i_ep_destroy_list_add - add an entry to EP destroy list
|
|
* @hba: pointer to adapter instance
|
|
* @ep: pointer to endpoint (transport indentifier) structure
|
|
*
|
|
* EP destroy queue manager
|
|
*/
|
|
static int bnx2i_ep_destroy_list_add(struct bnx2i_hba *hba,
|
|
struct bnx2i_endpoint *ep)
|
|
{
|
|
write_lock_bh(&hba->ep_rdwr_lock);
|
|
list_add_tail(&ep->link, &hba->ep_destroy_list);
|
|
write_unlock_bh(&hba->ep_rdwr_lock);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_ep_destroy_list_del - add an entry to EP destroy list
|
|
*
|
|
* @hba: pointer to adapter instance
|
|
* @ep: pointer to endpoint (transport indentifier) structure
|
|
*
|
|
* EP destroy queue manager
|
|
*/
|
|
static int bnx2i_ep_destroy_list_del(struct bnx2i_hba *hba,
|
|
struct bnx2i_endpoint *ep)
|
|
{
|
|
write_lock_bh(&hba->ep_rdwr_lock);
|
|
list_del_init(&ep->link);
|
|
write_unlock_bh(&hba->ep_rdwr_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_ep_ofld_list_add - add an entry to ep offload pending list
|
|
* @hba: pointer to adapter instance
|
|
* @ep: pointer to endpoint (transport indentifier) structure
|
|
*
|
|
* pending conn offload completion queue manager
|
|
*/
|
|
static int bnx2i_ep_ofld_list_add(struct bnx2i_hba *hba,
|
|
struct bnx2i_endpoint *ep)
|
|
{
|
|
write_lock_bh(&hba->ep_rdwr_lock);
|
|
list_add_tail(&ep->link, &hba->ep_ofld_list);
|
|
write_unlock_bh(&hba->ep_rdwr_lock);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_ep_ofld_list_del - add an entry to ep offload pending list
|
|
* @hba: pointer to adapter instance
|
|
* @ep: pointer to endpoint (transport indentifier) structure
|
|
*
|
|
* pending conn offload completion queue manager
|
|
*/
|
|
static int bnx2i_ep_ofld_list_del(struct bnx2i_hba *hba,
|
|
struct bnx2i_endpoint *ep)
|
|
{
|
|
write_lock_bh(&hba->ep_rdwr_lock);
|
|
list_del_init(&ep->link);
|
|
write_unlock_bh(&hba->ep_rdwr_lock);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_find_ep_in_ofld_list - find iscsi_cid in pending list of endpoints
|
|
*
|
|
* @hba: pointer to adapter instance
|
|
* @iscsi_cid: iscsi context ID to find
|
|
*
|
|
*/
|
|
struct bnx2i_endpoint *
|
|
bnx2i_find_ep_in_ofld_list(struct bnx2i_hba *hba, u32 iscsi_cid)
|
|
{
|
|
struct list_head *list;
|
|
struct list_head *tmp;
|
|
struct bnx2i_endpoint *ep;
|
|
|
|
read_lock_bh(&hba->ep_rdwr_lock);
|
|
list_for_each_safe(list, tmp, &hba->ep_ofld_list) {
|
|
ep = (struct bnx2i_endpoint *)list;
|
|
|
|
if (ep->ep_iscsi_cid == iscsi_cid)
|
|
break;
|
|
ep = NULL;
|
|
}
|
|
read_unlock_bh(&hba->ep_rdwr_lock);
|
|
|
|
if (!ep)
|
|
printk(KERN_ERR "l5 cid %d not found\n", iscsi_cid);
|
|
return ep;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_find_ep_in_destroy_list - find iscsi_cid in destroy list
|
|
* @hba: pointer to adapter instance
|
|
* @iscsi_cid: iscsi context ID to find
|
|
*
|
|
*/
|
|
struct bnx2i_endpoint *
|
|
bnx2i_find_ep_in_destroy_list(struct bnx2i_hba *hba, u32 iscsi_cid)
|
|
{
|
|
struct list_head *list;
|
|
struct list_head *tmp;
|
|
struct bnx2i_endpoint *ep;
|
|
|
|
read_lock_bh(&hba->ep_rdwr_lock);
|
|
list_for_each_safe(list, tmp, &hba->ep_destroy_list) {
|
|
ep = (struct bnx2i_endpoint *)list;
|
|
|
|
if (ep->ep_iscsi_cid == iscsi_cid)
|
|
break;
|
|
ep = NULL;
|
|
}
|
|
read_unlock_bh(&hba->ep_rdwr_lock);
|
|
|
|
if (!ep)
|
|
printk(KERN_ERR "l5 cid %d not found\n", iscsi_cid);
|
|
|
|
return ep;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_ep_active_list_add - add an entry to ep active list
|
|
* @hba: pointer to adapter instance
|
|
* @ep: pointer to endpoint (transport indentifier) structure
|
|
*
|
|
* current active conn queue manager
|
|
*/
|
|
static void bnx2i_ep_active_list_add(struct bnx2i_hba *hba,
|
|
struct bnx2i_endpoint *ep)
|
|
{
|
|
write_lock_bh(&hba->ep_rdwr_lock);
|
|
list_add_tail(&ep->link, &hba->ep_active_list);
|
|
write_unlock_bh(&hba->ep_rdwr_lock);
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_ep_active_list_del - deletes an entry to ep active list
|
|
* @hba: pointer to adapter instance
|
|
* @ep: pointer to endpoint (transport indentifier) structure
|
|
*
|
|
* current active conn queue manager
|
|
*/
|
|
static void bnx2i_ep_active_list_del(struct bnx2i_hba *hba,
|
|
struct bnx2i_endpoint *ep)
|
|
{
|
|
write_lock_bh(&hba->ep_rdwr_lock);
|
|
list_del_init(&ep->link);
|
|
write_unlock_bh(&hba->ep_rdwr_lock);
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_setup_host_queue_size - assigns shost->can_queue param
|
|
* @hba: pointer to adapter instance
|
|
* @shost: scsi host pointer
|
|
*
|
|
* Initializes 'can_queue' parameter based on how many outstanding commands
|
|
* the device can handle. Each device 5708/5709/57710 has different
|
|
* capabilities
|
|
*/
|
|
static void bnx2i_setup_host_queue_size(struct bnx2i_hba *hba,
|
|
struct Scsi_Host *shost)
|
|
{
|
|
if (test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type))
|
|
shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_5708;
|
|
else if (test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type))
|
|
shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_5709;
|
|
else if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type))
|
|
shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_57710;
|
|
else
|
|
shost->can_queue = ISCSI_MAX_CMDS_PER_HBA_5708;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_alloc_hba - allocate and init adapter instance
|
|
* @cnic: cnic device pointer
|
|
*
|
|
* allocate & initialize adapter structure and call other
|
|
* support routines to do per adapter initialization
|
|
*/
|
|
struct bnx2i_hba *bnx2i_alloc_hba(struct cnic_dev *cnic)
|
|
{
|
|
struct Scsi_Host *shost;
|
|
struct bnx2i_hba *hba;
|
|
|
|
shost = iscsi_host_alloc(&bnx2i_host_template, sizeof(*hba), 0);
|
|
if (!shost)
|
|
return NULL;
|
|
shost->dma_boundary = cnic->pcidev->dma_mask;
|
|
shost->transportt = bnx2i_scsi_xport_template;
|
|
shost->max_id = ISCSI_MAX_CONNS_PER_HBA;
|
|
shost->max_channel = 0;
|
|
shost->max_lun = 512;
|
|
shost->max_cmd_len = 16;
|
|
|
|
hba = iscsi_host_priv(shost);
|
|
hba->shost = shost;
|
|
hba->netdev = cnic->netdev;
|
|
/* Get PCI related information and update hba struct members */
|
|
hba->pcidev = cnic->pcidev;
|
|
pci_dev_get(hba->pcidev);
|
|
hba->pci_did = hba->pcidev->device;
|
|
hba->pci_vid = hba->pcidev->vendor;
|
|
hba->pci_sdid = hba->pcidev->subsystem_device;
|
|
hba->pci_svid = hba->pcidev->subsystem_vendor;
|
|
hba->pci_func = PCI_FUNC(hba->pcidev->devfn);
|
|
hba->pci_devno = PCI_SLOT(hba->pcidev->devfn);
|
|
|
|
bnx2i_identify_device(hba);
|
|
bnx2i_setup_host_queue_size(hba, shost);
|
|
|
|
if (test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) {
|
|
hba->regview = ioremap_nocache(hba->netdev->base_addr,
|
|
BNX2_MQ_CONFIG2);
|
|
if (!hba->regview)
|
|
goto ioreg_map_err;
|
|
} else if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
|
|
hba->regview = ioremap_nocache(hba->netdev->base_addr, 4096);
|
|
if (!hba->regview)
|
|
goto ioreg_map_err;
|
|
}
|
|
|
|
if (bnx2i_setup_mp_bdt(hba))
|
|
goto mp_bdt_mem_err;
|
|
|
|
INIT_LIST_HEAD(&hba->ep_ofld_list);
|
|
INIT_LIST_HEAD(&hba->ep_active_list);
|
|
INIT_LIST_HEAD(&hba->ep_destroy_list);
|
|
rwlock_init(&hba->ep_rdwr_lock);
|
|
|
|
hba->mtu_supported = BNX2I_MAX_MTU_SUPPORTED;
|
|
|
|
/* different values for 5708/5709/57710 */
|
|
hba->max_active_conns = ISCSI_MAX_CONNS_PER_HBA;
|
|
|
|
if (bnx2i_setup_free_cid_que(hba))
|
|
goto cid_que_err;
|
|
|
|
/* SQ/RQ/CQ size can be changed via sysfx interface */
|
|
if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
|
|
if (sq_size && sq_size <= BNX2I_5770X_SQ_WQES_MAX)
|
|
hba->max_sqes = sq_size;
|
|
else
|
|
hba->max_sqes = BNX2I_5770X_SQ_WQES_DEFAULT;
|
|
} else { /* 5706/5708/5709 */
|
|
if (sq_size && sq_size <= BNX2I_570X_SQ_WQES_MAX)
|
|
hba->max_sqes = sq_size;
|
|
else
|
|
hba->max_sqes = BNX2I_570X_SQ_WQES_DEFAULT;
|
|
}
|
|
|
|
hba->max_rqes = rq_size;
|
|
hba->max_cqes = hba->max_sqes + rq_size;
|
|
if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
|
|
if (hba->max_cqes > BNX2I_5770X_CQ_WQES_MAX)
|
|
hba->max_cqes = BNX2I_5770X_CQ_WQES_MAX;
|
|
} else if (hba->max_cqes > BNX2I_570X_CQ_WQES_MAX)
|
|
hba->max_cqes = BNX2I_570X_CQ_WQES_MAX;
|
|
|
|
hba->num_ccell = hba->max_sqes / 2;
|
|
|
|
spin_lock_init(&hba->lock);
|
|
mutex_init(&hba->net_dev_lock);
|
|
init_waitqueue_head(&hba->eh_wait);
|
|
if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) {
|
|
hba->hba_shutdown_tmo = 20 * HZ;
|
|
hba->conn_teardown_tmo = 20 * HZ;
|
|
hba->conn_ctx_destroy_tmo = 6 * HZ;
|
|
} else { /* 5706/5708/5709 */
|
|
hba->hba_shutdown_tmo = 20 * HZ;
|
|
hba->conn_teardown_tmo = 10 * HZ;
|
|
hba->conn_ctx_destroy_tmo = 2 * HZ;
|
|
}
|
|
|
|
if (iscsi_host_add(shost, &hba->pcidev->dev))
|
|
goto free_dump_mem;
|
|
return hba;
|
|
|
|
free_dump_mem:
|
|
bnx2i_release_free_cid_que(hba);
|
|
cid_que_err:
|
|
bnx2i_free_mp_bdt(hba);
|
|
mp_bdt_mem_err:
|
|
if (hba->regview) {
|
|
iounmap(hba->regview);
|
|
hba->regview = NULL;
|
|
}
|
|
ioreg_map_err:
|
|
pci_dev_put(hba->pcidev);
|
|
scsi_host_put(shost);
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_free_hba- releases hba structure and resources held by the adapter
|
|
* @hba: pointer to adapter instance
|
|
*
|
|
* free adapter structure and call various cleanup routines.
|
|
*/
|
|
void bnx2i_free_hba(struct bnx2i_hba *hba)
|
|
{
|
|
struct Scsi_Host *shost = hba->shost;
|
|
|
|
iscsi_host_remove(shost);
|
|
INIT_LIST_HEAD(&hba->ep_ofld_list);
|
|
INIT_LIST_HEAD(&hba->ep_active_list);
|
|
INIT_LIST_HEAD(&hba->ep_destroy_list);
|
|
pci_dev_put(hba->pcidev);
|
|
|
|
if (hba->regview) {
|
|
iounmap(hba->regview);
|
|
hba->regview = NULL;
|
|
}
|
|
bnx2i_free_mp_bdt(hba);
|
|
bnx2i_release_free_cid_que(hba);
|
|
iscsi_host_free(shost);
|
|
}
|
|
|
|
/**
|
|
* bnx2i_conn_free_login_resources - free DMA resources used for login process
|
|
* @hba: pointer to adapter instance
|
|
* @bnx2i_conn: iscsi connection pointer
|
|
*
|
|
* Login related resources, mostly BDT & payload DMA memory is freed
|
|
*/
|
|
static void bnx2i_conn_free_login_resources(struct bnx2i_hba *hba,
|
|
struct bnx2i_conn *bnx2i_conn)
|
|
{
|
|
if (bnx2i_conn->gen_pdu.resp_bd_tbl) {
|
|
dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
bnx2i_conn->gen_pdu.resp_bd_tbl,
|
|
bnx2i_conn->gen_pdu.resp_bd_dma);
|
|
bnx2i_conn->gen_pdu.resp_bd_tbl = NULL;
|
|
}
|
|
|
|
if (bnx2i_conn->gen_pdu.req_bd_tbl) {
|
|
dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
bnx2i_conn->gen_pdu.req_bd_tbl,
|
|
bnx2i_conn->gen_pdu.req_bd_dma);
|
|
bnx2i_conn->gen_pdu.req_bd_tbl = NULL;
|
|
}
|
|
|
|
if (bnx2i_conn->gen_pdu.resp_buf) {
|
|
dma_free_coherent(&hba->pcidev->dev,
|
|
ISCSI_DEF_MAX_RECV_SEG_LEN,
|
|
bnx2i_conn->gen_pdu.resp_buf,
|
|
bnx2i_conn->gen_pdu.resp_dma_addr);
|
|
bnx2i_conn->gen_pdu.resp_buf = NULL;
|
|
}
|
|
|
|
if (bnx2i_conn->gen_pdu.req_buf) {
|
|
dma_free_coherent(&hba->pcidev->dev,
|
|
ISCSI_DEF_MAX_RECV_SEG_LEN,
|
|
bnx2i_conn->gen_pdu.req_buf,
|
|
bnx2i_conn->gen_pdu.req_dma_addr);
|
|
bnx2i_conn->gen_pdu.req_buf = NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* bnx2i_conn_alloc_login_resources - alloc DMA resources for login/nop.
|
|
* @hba: pointer to adapter instance
|
|
* @bnx2i_conn: iscsi connection pointer
|
|
*
|
|
* Mgmt task DNA resources are allocated in this routine.
|
|
*/
|
|
static int bnx2i_conn_alloc_login_resources(struct bnx2i_hba *hba,
|
|
struct bnx2i_conn *bnx2i_conn)
|
|
{
|
|
/* Allocate memory for login request/response buffers */
|
|
bnx2i_conn->gen_pdu.req_buf =
|
|
dma_alloc_coherent(&hba->pcidev->dev,
|
|
ISCSI_DEF_MAX_RECV_SEG_LEN,
|
|
&bnx2i_conn->gen_pdu.req_dma_addr,
|
|
GFP_KERNEL);
|
|
if (bnx2i_conn->gen_pdu.req_buf == NULL)
|
|
goto login_req_buf_failure;
|
|
|
|
bnx2i_conn->gen_pdu.req_buf_size = 0;
|
|
bnx2i_conn->gen_pdu.req_wr_ptr = bnx2i_conn->gen_pdu.req_buf;
|
|
|
|
bnx2i_conn->gen_pdu.resp_buf =
|
|
dma_alloc_coherent(&hba->pcidev->dev,
|
|
ISCSI_DEF_MAX_RECV_SEG_LEN,
|
|
&bnx2i_conn->gen_pdu.resp_dma_addr,
|
|
GFP_KERNEL);
|
|
if (bnx2i_conn->gen_pdu.resp_buf == NULL)
|
|
goto login_resp_buf_failure;
|
|
|
|
bnx2i_conn->gen_pdu.resp_buf_size = ISCSI_DEF_MAX_RECV_SEG_LEN;
|
|
bnx2i_conn->gen_pdu.resp_wr_ptr = bnx2i_conn->gen_pdu.resp_buf;
|
|
|
|
bnx2i_conn->gen_pdu.req_bd_tbl =
|
|
dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
&bnx2i_conn->gen_pdu.req_bd_dma, GFP_KERNEL);
|
|
if (bnx2i_conn->gen_pdu.req_bd_tbl == NULL)
|
|
goto login_req_bd_tbl_failure;
|
|
|
|
bnx2i_conn->gen_pdu.resp_bd_tbl =
|
|
dma_alloc_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
&bnx2i_conn->gen_pdu.resp_bd_dma,
|
|
GFP_KERNEL);
|
|
if (bnx2i_conn->gen_pdu.resp_bd_tbl == NULL)
|
|
goto login_resp_bd_tbl_failure;
|
|
|
|
return 0;
|
|
|
|
login_resp_bd_tbl_failure:
|
|
dma_free_coherent(&hba->pcidev->dev, PAGE_SIZE,
|
|
bnx2i_conn->gen_pdu.req_bd_tbl,
|
|
bnx2i_conn->gen_pdu.req_bd_dma);
|
|
bnx2i_conn->gen_pdu.req_bd_tbl = NULL;
|
|
|
|
login_req_bd_tbl_failure:
|
|
dma_free_coherent(&hba->pcidev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN,
|
|
bnx2i_conn->gen_pdu.resp_buf,
|
|
bnx2i_conn->gen_pdu.resp_dma_addr);
|
|
bnx2i_conn->gen_pdu.resp_buf = NULL;
|
|
login_resp_buf_failure:
|
|
dma_free_coherent(&hba->pcidev->dev, ISCSI_DEF_MAX_RECV_SEG_LEN,
|
|
bnx2i_conn->gen_pdu.req_buf,
|
|
bnx2i_conn->gen_pdu.req_dma_addr);
|
|
bnx2i_conn->gen_pdu.req_buf = NULL;
|
|
login_req_buf_failure:
|
|
iscsi_conn_printk(KERN_ERR, bnx2i_conn->cls_conn->dd_data,
|
|
"login resource alloc failed!!\n");
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_iscsi_prep_generic_pdu_bd - prepares BD table.
|
|
* @bnx2i_conn: iscsi connection pointer
|
|
*
|
|
* Allocates buffers and BD tables before shipping requests to cnic
|
|
* for PDUs prepared by 'iscsid' daemon
|
|
*/
|
|
static void bnx2i_iscsi_prep_generic_pdu_bd(struct bnx2i_conn *bnx2i_conn)
|
|
{
|
|
struct iscsi_bd *bd_tbl;
|
|
|
|
bd_tbl = (struct iscsi_bd *) bnx2i_conn->gen_pdu.req_bd_tbl;
|
|
|
|
bd_tbl->buffer_addr_hi =
|
|
(u32) ((u64) bnx2i_conn->gen_pdu.req_dma_addr >> 32);
|
|
bd_tbl->buffer_addr_lo = (u32) bnx2i_conn->gen_pdu.req_dma_addr;
|
|
bd_tbl->buffer_length = bnx2i_conn->gen_pdu.req_wr_ptr -
|
|
bnx2i_conn->gen_pdu.req_buf;
|
|
bd_tbl->reserved0 = 0;
|
|
bd_tbl->flags = ISCSI_BD_LAST_IN_BD_CHAIN |
|
|
ISCSI_BD_FIRST_IN_BD_CHAIN;
|
|
|
|
bd_tbl = (struct iscsi_bd *) bnx2i_conn->gen_pdu.resp_bd_tbl;
|
|
bd_tbl->buffer_addr_hi = (u64) bnx2i_conn->gen_pdu.resp_dma_addr >> 32;
|
|
bd_tbl->buffer_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_dma_addr;
|
|
bd_tbl->buffer_length = ISCSI_DEF_MAX_RECV_SEG_LEN;
|
|
bd_tbl->reserved0 = 0;
|
|
bd_tbl->flags = ISCSI_BD_LAST_IN_BD_CHAIN |
|
|
ISCSI_BD_FIRST_IN_BD_CHAIN;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_iscsi_send_generic_request - called to send mgmt tasks.
|
|
* @task: transport layer task pointer
|
|
*
|
|
* called to transmit PDUs prepared by the 'iscsid' daemon. iSCSI login,
|
|
* Nop-out and Logout requests flow through this path.
|
|
*/
|
|
static int bnx2i_iscsi_send_generic_request(struct iscsi_task *task)
|
|
{
|
|
struct bnx2i_cmd *cmd = task->dd_data;
|
|
struct bnx2i_conn *bnx2i_conn = cmd->conn;
|
|
int rc = 0;
|
|
char *buf;
|
|
int data_len;
|
|
|
|
bnx2i_iscsi_prep_generic_pdu_bd(bnx2i_conn);
|
|
switch (task->hdr->opcode & ISCSI_OPCODE_MASK) {
|
|
case ISCSI_OP_LOGIN:
|
|
bnx2i_send_iscsi_login(bnx2i_conn, task);
|
|
break;
|
|
case ISCSI_OP_NOOP_OUT:
|
|
data_len = bnx2i_conn->gen_pdu.req_buf_size;
|
|
buf = bnx2i_conn->gen_pdu.req_buf;
|
|
if (data_len)
|
|
rc = bnx2i_send_iscsi_nopout(bnx2i_conn, task,
|
|
buf, data_len, 1);
|
|
else
|
|
rc = bnx2i_send_iscsi_nopout(bnx2i_conn, task,
|
|
NULL, 0, 1);
|
|
break;
|
|
case ISCSI_OP_LOGOUT:
|
|
rc = bnx2i_send_iscsi_logout(bnx2i_conn, task);
|
|
break;
|
|
case ISCSI_OP_SCSI_TMFUNC:
|
|
rc = bnx2i_send_iscsi_tmf(bnx2i_conn, task);
|
|
break;
|
|
case ISCSI_OP_TEXT:
|
|
rc = bnx2i_send_iscsi_text(bnx2i_conn, task);
|
|
break;
|
|
default:
|
|
iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data,
|
|
"send_gen: unsupported op 0x%x\n",
|
|
task->hdr->opcode);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* SCSI-ML Interface
|
|
**********************************************************************/
|
|
|
|
/**
|
|
* bnx2i_cpy_scsi_cdb - copies LUN & CDB fields in required format to sq wqe
|
|
* @sc: SCSI-ML command pointer
|
|
* @cmd: iscsi cmd pointer
|
|
*/
|
|
static void bnx2i_cpy_scsi_cdb(struct scsi_cmnd *sc, struct bnx2i_cmd *cmd)
|
|
{
|
|
u32 dword;
|
|
int lpcnt;
|
|
u8 *srcp;
|
|
u32 *dstp;
|
|
u32 scsi_lun[2];
|
|
|
|
int_to_scsilun(sc->device->lun, (struct scsi_lun *) scsi_lun);
|
|
cmd->req.lun[0] = be32_to_cpu(scsi_lun[0]);
|
|
cmd->req.lun[1] = be32_to_cpu(scsi_lun[1]);
|
|
|
|
lpcnt = cmd->scsi_cmd->cmd_len / sizeof(dword);
|
|
srcp = (u8 *) sc->cmnd;
|
|
dstp = (u32 *) cmd->req.cdb;
|
|
while (lpcnt--) {
|
|
memcpy(&dword, (const void *) srcp, 4);
|
|
*dstp = cpu_to_be32(dword);
|
|
srcp += 4;
|
|
dstp++;
|
|
}
|
|
if (sc->cmd_len & 0x3) {
|
|
dword = (u32) srcp[0] | ((u32) srcp[1] << 8);
|
|
*dstp = cpu_to_be32(dword);
|
|
}
|
|
}
|
|
|
|
static void bnx2i_cleanup_task(struct iscsi_task *task)
|
|
{
|
|
struct iscsi_conn *conn = task->conn;
|
|
struct bnx2i_conn *bnx2i_conn = conn->dd_data;
|
|
struct bnx2i_hba *hba = bnx2i_conn->hba;
|
|
|
|
/*
|
|
* mgmt task or cmd was never sent to us to transmit.
|
|
*/
|
|
if (!task->sc || task->state == ISCSI_TASK_PENDING)
|
|
return;
|
|
/*
|
|
* need to clean-up task context to claim dma buffers
|
|
*/
|
|
if (task->state == ISCSI_TASK_ABRT_TMF) {
|
|
bnx2i_send_cmd_cleanup_req(hba, task->dd_data);
|
|
|
|
spin_unlock_bh(&conn->session->lock);
|
|
wait_for_completion_timeout(&bnx2i_conn->cmd_cleanup_cmpl,
|
|
msecs_to_jiffies(ISCSI_CMD_CLEANUP_TIMEOUT));
|
|
spin_lock_bh(&conn->session->lock);
|
|
}
|
|
bnx2i_iscsi_unmap_sg_list(task->dd_data);
|
|
}
|
|
|
|
/**
|
|
* bnx2i_mtask_xmit - transmit mtask to chip for further processing
|
|
* @conn: transport layer conn structure pointer
|
|
* @task: transport layer command structure pointer
|
|
*/
|
|
static int
|
|
bnx2i_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
|
|
{
|
|
struct bnx2i_conn *bnx2i_conn = conn->dd_data;
|
|
struct bnx2i_cmd *cmd = task->dd_data;
|
|
|
|
memset(bnx2i_conn->gen_pdu.req_buf, 0, ISCSI_DEF_MAX_RECV_SEG_LEN);
|
|
|
|
bnx2i_setup_cmd_wqe_template(cmd);
|
|
bnx2i_conn->gen_pdu.req_buf_size = task->data_count;
|
|
if (task->data_count) {
|
|
memcpy(bnx2i_conn->gen_pdu.req_buf, task->data,
|
|
task->data_count);
|
|
bnx2i_conn->gen_pdu.req_wr_ptr =
|
|
bnx2i_conn->gen_pdu.req_buf + task->data_count;
|
|
}
|
|
cmd->conn = conn->dd_data;
|
|
cmd->scsi_cmd = NULL;
|
|
return bnx2i_iscsi_send_generic_request(task);
|
|
}
|
|
|
|
/**
|
|
* bnx2i_task_xmit - transmit iscsi command to chip for further processing
|
|
* @task: transport layer command structure pointer
|
|
*
|
|
* maps SG buffers and send request to chip/firmware in the form of SQ WQE
|
|
*/
|
|
static int bnx2i_task_xmit(struct iscsi_task *task)
|
|
{
|
|
struct iscsi_conn *conn = task->conn;
|
|
struct iscsi_session *session = conn->session;
|
|
struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
|
|
struct bnx2i_hba *hba = iscsi_host_priv(shost);
|
|
struct bnx2i_conn *bnx2i_conn = conn->dd_data;
|
|
struct scsi_cmnd *sc = task->sc;
|
|
struct bnx2i_cmd *cmd = task->dd_data;
|
|
struct iscsi_cmd *hdr = (struct iscsi_cmd *) task->hdr;
|
|
|
|
/*
|
|
* If there is no scsi_cmnd this must be a mgmt task
|
|
*/
|
|
if (!sc)
|
|
return bnx2i_mtask_xmit(conn, task);
|
|
|
|
bnx2i_setup_cmd_wqe_template(cmd);
|
|
cmd->req.op_code = ISCSI_OP_SCSI_CMD;
|
|
cmd->conn = bnx2i_conn;
|
|
cmd->scsi_cmd = sc;
|
|
cmd->req.total_data_transfer_length = scsi_bufflen(sc);
|
|
cmd->req.cmd_sn = be32_to_cpu(hdr->cmdsn);
|
|
|
|
bnx2i_iscsi_map_sg_list(cmd);
|
|
bnx2i_cpy_scsi_cdb(sc, cmd);
|
|
|
|
cmd->req.op_attr = ISCSI_ATTR_SIMPLE;
|
|
if (sc->sc_data_direction == DMA_TO_DEVICE) {
|
|
cmd->req.op_attr |= ISCSI_CMD_REQUEST_WRITE;
|
|
cmd->req.itt = task->itt |
|
|
(ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT);
|
|
bnx2i_setup_write_cmd_bd_info(task);
|
|
} else {
|
|
if (scsi_bufflen(sc))
|
|
cmd->req.op_attr |= ISCSI_CMD_REQUEST_READ;
|
|
cmd->req.itt = task->itt |
|
|
(ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT);
|
|
}
|
|
|
|
cmd->req.num_bds = cmd->io_tbl.bd_valid;
|
|
if (!cmd->io_tbl.bd_valid) {
|
|
cmd->req.bd_list_addr_lo = (u32) hba->mp_bd_dma;
|
|
cmd->req.bd_list_addr_hi = (u32) ((u64) hba->mp_bd_dma >> 32);
|
|
cmd->req.num_bds = 1;
|
|
}
|
|
|
|
bnx2i_send_iscsi_scsicmd(bnx2i_conn, cmd);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_session_create - create a new iscsi session
|
|
* @cmds_max: max commands supported
|
|
* @qdepth: scsi queue depth to support
|
|
* @initial_cmdsn: initial iscsi CMDSN to be used for this session
|
|
*
|
|
* Creates a new iSCSI session instance on given device.
|
|
*/
|
|
static struct iscsi_cls_session *
|
|
bnx2i_session_create(struct iscsi_endpoint *ep,
|
|
uint16_t cmds_max, uint16_t qdepth,
|
|
uint32_t initial_cmdsn)
|
|
{
|
|
struct Scsi_Host *shost;
|
|
struct iscsi_cls_session *cls_session;
|
|
struct bnx2i_hba *hba;
|
|
struct bnx2i_endpoint *bnx2i_ep;
|
|
|
|
if (!ep) {
|
|
printk(KERN_ERR "bnx2i: missing ep.\n");
|
|
return NULL;
|
|
}
|
|
|
|
bnx2i_ep = ep->dd_data;
|
|
shost = bnx2i_ep->hba->shost;
|
|
hba = iscsi_host_priv(shost);
|
|
if (bnx2i_adapter_ready(hba))
|
|
return NULL;
|
|
|
|
/*
|
|
* user can override hw limit as long as it is within
|
|
* the min/max.
|
|
*/
|
|
if (cmds_max > hba->max_sqes)
|
|
cmds_max = hba->max_sqes;
|
|
else if (cmds_max < BNX2I_SQ_WQES_MIN)
|
|
cmds_max = BNX2I_SQ_WQES_MIN;
|
|
|
|
cls_session = iscsi_session_setup(&bnx2i_iscsi_transport, shost,
|
|
cmds_max, 0, sizeof(struct bnx2i_cmd),
|
|
initial_cmdsn, ISCSI_MAX_TARGET);
|
|
if (!cls_session)
|
|
return NULL;
|
|
|
|
if (bnx2i_setup_cmd_pool(hba, cls_session->dd_data))
|
|
goto session_teardown;
|
|
return cls_session;
|
|
|
|
session_teardown:
|
|
iscsi_session_teardown(cls_session);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_session_destroy - destroys iscsi session
|
|
* @cls_session: pointer to iscsi cls session
|
|
*
|
|
* Destroys previously created iSCSI session instance and releases
|
|
* all resources held by it
|
|
*/
|
|
static void bnx2i_session_destroy(struct iscsi_cls_session *cls_session)
|
|
{
|
|
struct iscsi_session *session = cls_session->dd_data;
|
|
struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
|
|
struct bnx2i_hba *hba = iscsi_host_priv(shost);
|
|
|
|
bnx2i_destroy_cmd_pool(hba, session);
|
|
iscsi_session_teardown(cls_session);
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_conn_create - create iscsi connection instance
|
|
* @cls_session: pointer to iscsi cls session
|
|
* @cid: iscsi cid as per rfc (not NX2's CID terminology)
|
|
*
|
|
* Creates a new iSCSI connection instance for a given session
|
|
*/
|
|
static struct iscsi_cls_conn *
|
|
bnx2i_conn_create(struct iscsi_cls_session *cls_session, uint32_t cid)
|
|
{
|
|
struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
|
|
struct bnx2i_hba *hba = iscsi_host_priv(shost);
|
|
struct bnx2i_conn *bnx2i_conn;
|
|
struct iscsi_cls_conn *cls_conn;
|
|
struct iscsi_conn *conn;
|
|
|
|
cls_conn = iscsi_conn_setup(cls_session, sizeof(*bnx2i_conn),
|
|
cid);
|
|
if (!cls_conn)
|
|
return NULL;
|
|
conn = cls_conn->dd_data;
|
|
|
|
bnx2i_conn = conn->dd_data;
|
|
bnx2i_conn->cls_conn = cls_conn;
|
|
bnx2i_conn->hba = hba;
|
|
/* 'ep' ptr will be assigned in bind() call */
|
|
bnx2i_conn->ep = NULL;
|
|
init_completion(&bnx2i_conn->cmd_cleanup_cmpl);
|
|
|
|
if (bnx2i_conn_alloc_login_resources(hba, bnx2i_conn)) {
|
|
iscsi_conn_printk(KERN_ALERT, conn,
|
|
"conn_new: login resc alloc failed!!\n");
|
|
goto free_conn;
|
|
}
|
|
|
|
return cls_conn;
|
|
|
|
free_conn:
|
|
iscsi_conn_teardown(cls_conn);
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_conn_bind - binds iscsi sess, conn and ep objects together
|
|
* @cls_session: pointer to iscsi cls session
|
|
* @cls_conn: pointer to iscsi cls conn
|
|
* @transport_fd: 64-bit EP handle
|
|
* @is_leading: leading connection on this session?
|
|
*
|
|
* Binds together iSCSI session instance, iSCSI connection instance
|
|
* and the TCP connection. This routine returns error code if
|
|
* TCP connection does not belong on the device iSCSI sess/conn
|
|
* is bound
|
|
*/
|
|
static int bnx2i_conn_bind(struct iscsi_cls_session *cls_session,
|
|
struct iscsi_cls_conn *cls_conn,
|
|
uint64_t transport_fd, int is_leading)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct bnx2i_conn *bnx2i_conn = conn->dd_data;
|
|
struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
|
|
struct bnx2i_hba *hba = iscsi_host_priv(shost);
|
|
struct bnx2i_endpoint *bnx2i_ep;
|
|
struct iscsi_endpoint *ep;
|
|
int ret_code;
|
|
|
|
ep = iscsi_lookup_endpoint(transport_fd);
|
|
if (!ep)
|
|
return -EINVAL;
|
|
/*
|
|
* Forcefully terminate all in progress connection recovery at the
|
|
* earliest, either in bind(), send_pdu(LOGIN), or conn_start()
|
|
*/
|
|
if (bnx2i_adapter_ready(hba))
|
|
return -EIO;
|
|
|
|
bnx2i_ep = ep->dd_data;
|
|
if ((bnx2i_ep->state == EP_STATE_TCP_FIN_RCVD) ||
|
|
(bnx2i_ep->state == EP_STATE_TCP_RST_RCVD))
|
|
/* Peer disconnect via' FIN or RST */
|
|
return -EINVAL;
|
|
|
|
if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
|
|
return -EINVAL;
|
|
|
|
if (bnx2i_ep->hba != hba) {
|
|
/* Error - TCP connection does not belong to this device
|
|
*/
|
|
iscsi_conn_printk(KERN_ALERT, cls_conn->dd_data,
|
|
"conn bind, ep=0x%p (%s) does not",
|
|
bnx2i_ep, bnx2i_ep->hba->netdev->name);
|
|
iscsi_conn_printk(KERN_ALERT, cls_conn->dd_data,
|
|
"belong to hba (%s)\n",
|
|
hba->netdev->name);
|
|
return -EEXIST;
|
|
}
|
|
bnx2i_ep->conn = bnx2i_conn;
|
|
bnx2i_conn->ep = bnx2i_ep;
|
|
bnx2i_conn->iscsi_conn_cid = bnx2i_ep->ep_iscsi_cid;
|
|
bnx2i_conn->fw_cid = bnx2i_ep->ep_cid;
|
|
|
|
ret_code = bnx2i_bind_conn_to_iscsi_cid(hba, bnx2i_conn,
|
|
bnx2i_ep->ep_iscsi_cid);
|
|
|
|
/* 5706/5708/5709 FW takes RQ as full when initiated, but for 57710
|
|
* driver needs to explicitly replenish RQ index during setup.
|
|
*/
|
|
if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_ep->hba->cnic_dev_type))
|
|
bnx2i_put_rq_buf(bnx2i_conn, 0);
|
|
|
|
bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE);
|
|
return ret_code;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_conn_destroy - destroy iscsi connection instance & release resources
|
|
* @cls_conn: pointer to iscsi cls conn
|
|
*
|
|
* Destroy an iSCSI connection instance and release memory resources held by
|
|
* this connection
|
|
*/
|
|
static void bnx2i_conn_destroy(struct iscsi_cls_conn *cls_conn)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct bnx2i_conn *bnx2i_conn = conn->dd_data;
|
|
struct Scsi_Host *shost;
|
|
struct bnx2i_hba *hba;
|
|
|
|
shost = iscsi_session_to_shost(iscsi_conn_to_session(cls_conn));
|
|
hba = iscsi_host_priv(shost);
|
|
|
|
bnx2i_conn_free_login_resources(hba, bnx2i_conn);
|
|
iscsi_conn_teardown(cls_conn);
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_ep_get_param - return iscsi ep parameter to caller
|
|
* @ep: pointer to iscsi endpoint
|
|
* @param: parameter type identifier
|
|
* @buf: buffer pointer
|
|
*
|
|
* returns iSCSI ep parameters
|
|
*/
|
|
static int bnx2i_ep_get_param(struct iscsi_endpoint *ep,
|
|
enum iscsi_param param, char *buf)
|
|
{
|
|
struct bnx2i_endpoint *bnx2i_ep = ep->dd_data;
|
|
struct bnx2i_hba *hba = bnx2i_ep->hba;
|
|
int len = -ENOTCONN;
|
|
|
|
if (!hba)
|
|
return -ENOTCONN;
|
|
|
|
switch (param) {
|
|
case ISCSI_PARAM_CONN_PORT:
|
|
mutex_lock(&hba->net_dev_lock);
|
|
if (bnx2i_ep->cm_sk)
|
|
len = sprintf(buf, "%hu\n", bnx2i_ep->cm_sk->dst_port);
|
|
mutex_unlock(&hba->net_dev_lock);
|
|
break;
|
|
case ISCSI_PARAM_CONN_ADDRESS:
|
|
mutex_lock(&hba->net_dev_lock);
|
|
if (bnx2i_ep->cm_sk)
|
|
len = sprintf(buf, "%pI4\n", &bnx2i_ep->cm_sk->dst_ip);
|
|
mutex_unlock(&hba->net_dev_lock);
|
|
break;
|
|
default:
|
|
return -ENOSYS;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_host_get_param - returns host (adapter) related parameters
|
|
* @shost: scsi host pointer
|
|
* @param: parameter type identifier
|
|
* @buf: buffer pointer
|
|
*/
|
|
static int bnx2i_host_get_param(struct Scsi_Host *shost,
|
|
enum iscsi_host_param param, char *buf)
|
|
{
|
|
struct bnx2i_hba *hba = iscsi_host_priv(shost);
|
|
int len = 0;
|
|
|
|
switch (param) {
|
|
case ISCSI_HOST_PARAM_HWADDRESS:
|
|
len = sysfs_format_mac(buf, hba->cnic->mac_addr, 6);
|
|
break;
|
|
case ISCSI_HOST_PARAM_NETDEV_NAME:
|
|
len = sprintf(buf, "%s\n", hba->netdev->name);
|
|
break;
|
|
case ISCSI_HOST_PARAM_IPADDRESS: {
|
|
struct list_head *active_list = &hba->ep_active_list;
|
|
|
|
read_lock_bh(&hba->ep_rdwr_lock);
|
|
if (!list_empty(&hba->ep_active_list)) {
|
|
struct bnx2i_endpoint *bnx2i_ep;
|
|
struct cnic_sock *csk;
|
|
|
|
bnx2i_ep = list_first_entry(active_list,
|
|
struct bnx2i_endpoint,
|
|
link);
|
|
csk = bnx2i_ep->cm_sk;
|
|
if (test_bit(SK_F_IPV6, &csk->flags))
|
|
len = sprintf(buf, "%pI6\n", csk->src_ip);
|
|
else
|
|
len = sprintf(buf, "%pI4\n", csk->src_ip);
|
|
}
|
|
read_unlock_bh(&hba->ep_rdwr_lock);
|
|
break;
|
|
}
|
|
default:
|
|
return iscsi_host_get_param(shost, param, buf);
|
|
}
|
|
return len;
|
|
}
|
|
|
|
/**
|
|
* bnx2i_conn_start - completes iscsi connection migration to FFP
|
|
* @cls_conn: pointer to iscsi cls conn
|
|
*
|
|
* last call in FFP migration to handover iscsi conn to the driver
|
|
*/
|
|
static int bnx2i_conn_start(struct iscsi_cls_conn *cls_conn)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct bnx2i_conn *bnx2i_conn = conn->dd_data;
|
|
|
|
bnx2i_conn->ep->state = EP_STATE_ULP_UPDATE_START;
|
|
bnx2i_update_iscsi_conn(conn);
|
|
|
|
/*
|
|
* this should normally not sleep for a long time so it should
|
|
* not disrupt the caller.
|
|
*/
|
|
bnx2i_conn->ep->ofld_timer.expires = 1 * HZ + jiffies;
|
|
bnx2i_conn->ep->ofld_timer.function = bnx2i_ep_ofld_timer;
|
|
bnx2i_conn->ep->ofld_timer.data = (unsigned long) bnx2i_conn->ep;
|
|
add_timer(&bnx2i_conn->ep->ofld_timer);
|
|
/* update iSCSI context for this conn, wait for CNIC to complete */
|
|
wait_event_interruptible(bnx2i_conn->ep->ofld_wait,
|
|
bnx2i_conn->ep->state != EP_STATE_ULP_UPDATE_START);
|
|
|
|
if (signal_pending(current))
|
|
flush_signals(current);
|
|
del_timer_sync(&bnx2i_conn->ep->ofld_timer);
|
|
|
|
iscsi_conn_start(cls_conn);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_conn_get_stats - returns iSCSI stats
|
|
* @cls_conn: pointer to iscsi cls conn
|
|
* @stats: pointer to iscsi statistic struct
|
|
*/
|
|
static void bnx2i_conn_get_stats(struct iscsi_cls_conn *cls_conn,
|
|
struct iscsi_stats *stats)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
|
|
stats->txdata_octets = conn->txdata_octets;
|
|
stats->rxdata_octets = conn->rxdata_octets;
|
|
stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
|
|
stats->dataout_pdus = conn->dataout_pdus_cnt;
|
|
stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
|
|
stats->datain_pdus = conn->datain_pdus_cnt;
|
|
stats->r2t_pdus = conn->r2t_pdus_cnt;
|
|
stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
|
|
stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
|
|
stats->custom_length = 3;
|
|
strcpy(stats->custom[2].desc, "eh_abort_cnt");
|
|
stats->custom[2].value = conn->eh_abort_cnt;
|
|
stats->digest_err = 0;
|
|
stats->timeout_err = 0;
|
|
stats->custom_length = 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_check_route - checks if target IP route belongs to one of NX2 devices
|
|
* @dst_addr: target IP address
|
|
*
|
|
* check if route resolves to BNX2 device
|
|
*/
|
|
static struct bnx2i_hba *bnx2i_check_route(struct sockaddr *dst_addr)
|
|
{
|
|
struct sockaddr_in *desti = (struct sockaddr_in *) dst_addr;
|
|
struct bnx2i_hba *hba;
|
|
struct cnic_dev *cnic = NULL;
|
|
|
|
hba = get_adapter_list_head();
|
|
if (hba && hba->cnic)
|
|
cnic = hba->cnic->cm_select_dev(desti, CNIC_ULP_ISCSI);
|
|
if (!cnic) {
|
|
printk(KERN_ALERT "bnx2i: no route,"
|
|
"can't connect using cnic\n");
|
|
goto no_nx2_route;
|
|
}
|
|
hba = bnx2i_find_hba_for_cnic(cnic);
|
|
if (!hba)
|
|
goto no_nx2_route;
|
|
|
|
if (bnx2i_adapter_ready(hba)) {
|
|
printk(KERN_ALERT "bnx2i: check route, hba not found\n");
|
|
goto no_nx2_route;
|
|
}
|
|
if (hba->netdev->mtu > hba->mtu_supported) {
|
|
printk(KERN_ALERT "bnx2i: %s network i/f mtu is set to %d\n",
|
|
hba->netdev->name, hba->netdev->mtu);
|
|
printk(KERN_ALERT "bnx2i: iSCSI HBA can support mtu of %d\n",
|
|
hba->mtu_supported);
|
|
goto no_nx2_route;
|
|
}
|
|
return hba;
|
|
no_nx2_route:
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_tear_down_conn - tear down iscsi/tcp connection and free resources
|
|
* @hba: pointer to adapter instance
|
|
* @ep: endpoint (transport indentifier) structure
|
|
*
|
|
* destroys cm_sock structure and on chip iscsi context
|
|
*/
|
|
static int bnx2i_tear_down_conn(struct bnx2i_hba *hba,
|
|
struct bnx2i_endpoint *ep)
|
|
{
|
|
if (test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic) && ep->cm_sk)
|
|
hba->cnic->cm_destroy(ep->cm_sk);
|
|
|
|
if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type) &&
|
|
ep->state == EP_STATE_DISCONN_TIMEDOUT) {
|
|
if (ep->conn && ep->conn->cls_conn &&
|
|
ep->conn->cls_conn->dd_data) {
|
|
struct iscsi_conn *conn = ep->conn->cls_conn->dd_data;
|
|
|
|
/* Must suspend all rx queue activity for this ep */
|
|
set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx);
|
|
}
|
|
/* CONN_DISCONNECT timeout may or may not be an issue depending
|
|
* on what transcribed in TCP layer, different targets behave
|
|
* differently
|
|
*/
|
|
printk(KERN_ALERT "bnx2i (%s): - WARN - CONN_DISCON timed out, "
|
|
"please submit GRC Dump, NW/PCIe trace, "
|
|
"driver msgs to developers for analysis\n",
|
|
hba->netdev->name);
|
|
}
|
|
|
|
ep->state = EP_STATE_CLEANUP_START;
|
|
init_timer(&ep->ofld_timer);
|
|
ep->ofld_timer.expires = hba->conn_ctx_destroy_tmo + jiffies;
|
|
ep->ofld_timer.function = bnx2i_ep_ofld_timer;
|
|
ep->ofld_timer.data = (unsigned long) ep;
|
|
add_timer(&ep->ofld_timer);
|
|
|
|
bnx2i_ep_destroy_list_add(hba, ep);
|
|
|
|
/* destroy iSCSI context, wait for it to complete */
|
|
if (bnx2i_send_conn_destroy(hba, ep))
|
|
ep->state = EP_STATE_CLEANUP_CMPL;
|
|
|
|
wait_event_interruptible(ep->ofld_wait,
|
|
(ep->state != EP_STATE_CLEANUP_START));
|
|
|
|
if (signal_pending(current))
|
|
flush_signals(current);
|
|
del_timer_sync(&ep->ofld_timer);
|
|
|
|
bnx2i_ep_destroy_list_del(hba, ep);
|
|
|
|
if (ep->state != EP_STATE_CLEANUP_CMPL)
|
|
/* should never happen */
|
|
printk(KERN_ALERT "bnx2i - conn destroy failed\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_ep_connect - establish TCP connection to target portal
|
|
* @shost: scsi host
|
|
* @dst_addr: target IP address
|
|
* @non_blocking: blocking or non-blocking call
|
|
*
|
|
* this routine initiates the TCP/IP connection by invoking Option-2 i/f
|
|
* with l5_core and the CNIC. This is a multi-step process of resolving
|
|
* route to target, create a iscsi connection context, handshaking with
|
|
* CNIC module to create/initialize the socket struct and finally
|
|
* sending down option-2 request to complete TCP 3-way handshake
|
|
*/
|
|
static struct iscsi_endpoint *bnx2i_ep_connect(struct Scsi_Host *shost,
|
|
struct sockaddr *dst_addr,
|
|
int non_blocking)
|
|
{
|
|
u32 iscsi_cid = BNX2I_CID_RESERVED;
|
|
struct sockaddr_in *desti = (struct sockaddr_in *) dst_addr;
|
|
struct sockaddr_in6 *desti6;
|
|
struct bnx2i_endpoint *bnx2i_ep;
|
|
struct bnx2i_hba *hba;
|
|
struct cnic_dev *cnic;
|
|
struct cnic_sockaddr saddr;
|
|
struct iscsi_endpoint *ep;
|
|
int rc = 0;
|
|
|
|
if (shost) {
|
|
/* driver is given scsi host to work with */
|
|
hba = iscsi_host_priv(shost);
|
|
} else
|
|
/*
|
|
* check if the given destination can be reached through
|
|
* a iscsi capable NetXtreme2 device
|
|
*/
|
|
hba = bnx2i_check_route(dst_addr);
|
|
|
|
if (!hba) {
|
|
rc = -EINVAL;
|
|
goto nohba;
|
|
}
|
|
mutex_lock(&hba->net_dev_lock);
|
|
|
|
if (bnx2i_adapter_ready(hba) || !hba->cid_que.cid_free_cnt) {
|
|
rc = -EPERM;
|
|
goto check_busy;
|
|
}
|
|
cnic = hba->cnic;
|
|
ep = bnx2i_alloc_ep(hba);
|
|
if (!ep) {
|
|
rc = -ENOMEM;
|
|
goto check_busy;
|
|
}
|
|
bnx2i_ep = ep->dd_data;
|
|
|
|
bnx2i_ep->num_active_cmds = 0;
|
|
iscsi_cid = bnx2i_alloc_iscsi_cid(hba);
|
|
if (iscsi_cid == -1) {
|
|
printk(KERN_ALERT "bnx2i (%s): alloc_ep - unable to allocate "
|
|
"iscsi cid\n", hba->netdev->name);
|
|
rc = -ENOMEM;
|
|
bnx2i_free_ep(ep);
|
|
goto check_busy;
|
|
}
|
|
bnx2i_ep->hba_age = hba->age;
|
|
|
|
rc = bnx2i_alloc_qp_resc(hba, bnx2i_ep);
|
|
if (rc != 0) {
|
|
printk(KERN_ALERT "bnx2i (%s): ep_conn - alloc QP resc error"
|
|
"\n", hba->netdev->name);
|
|
rc = -ENOMEM;
|
|
goto qp_resc_err;
|
|
}
|
|
|
|
bnx2i_ep->ep_iscsi_cid = (u16)iscsi_cid;
|
|
bnx2i_ep->state = EP_STATE_OFLD_START;
|
|
bnx2i_ep_ofld_list_add(hba, bnx2i_ep);
|
|
|
|
init_timer(&bnx2i_ep->ofld_timer);
|
|
bnx2i_ep->ofld_timer.expires = 2 * HZ + jiffies;
|
|
bnx2i_ep->ofld_timer.function = bnx2i_ep_ofld_timer;
|
|
bnx2i_ep->ofld_timer.data = (unsigned long) bnx2i_ep;
|
|
add_timer(&bnx2i_ep->ofld_timer);
|
|
|
|
if (bnx2i_send_conn_ofld_req(hba, bnx2i_ep)) {
|
|
if (bnx2i_ep->state == EP_STATE_OFLD_FAILED_CID_BUSY) {
|
|
printk(KERN_ALERT "bnx2i (%s): iscsi cid %d is busy\n",
|
|
hba->netdev->name, bnx2i_ep->ep_iscsi_cid);
|
|
rc = -EBUSY;
|
|
} else
|
|
rc = -ENOSPC;
|
|
printk(KERN_ALERT "bnx2i (%s): unable to send conn offld kwqe"
|
|
"\n", hba->netdev->name);
|
|
bnx2i_ep_ofld_list_del(hba, bnx2i_ep);
|
|
goto conn_failed;
|
|
}
|
|
|
|
/* Wait for CNIC hardware to setup conn context and return 'cid' */
|
|
wait_event_interruptible(bnx2i_ep->ofld_wait,
|
|
bnx2i_ep->state != EP_STATE_OFLD_START);
|
|
|
|
if (signal_pending(current))
|
|
flush_signals(current);
|
|
del_timer_sync(&bnx2i_ep->ofld_timer);
|
|
|
|
bnx2i_ep_ofld_list_del(hba, bnx2i_ep);
|
|
|
|
if (bnx2i_ep->state != EP_STATE_OFLD_COMPL) {
|
|
if (bnx2i_ep->state == EP_STATE_OFLD_FAILED_CID_BUSY) {
|
|
printk(KERN_ALERT "bnx2i (%s): iscsi cid %d is busy\n",
|
|
hba->netdev->name, bnx2i_ep->ep_iscsi_cid);
|
|
rc = -EBUSY;
|
|
} else
|
|
rc = -ENOSPC;
|
|
goto conn_failed;
|
|
}
|
|
|
|
rc = cnic->cm_create(cnic, CNIC_ULP_ISCSI, bnx2i_ep->ep_cid,
|
|
iscsi_cid, &bnx2i_ep->cm_sk, bnx2i_ep);
|
|
if (rc) {
|
|
rc = -EINVAL;
|
|
/* Need to terminate and cleanup the connection */
|
|
goto release_ep;
|
|
}
|
|
|
|
bnx2i_ep->cm_sk->rcv_buf = 256 * 1024;
|
|
bnx2i_ep->cm_sk->snd_buf = 256 * 1024;
|
|
clear_bit(SK_TCP_TIMESTAMP, &bnx2i_ep->cm_sk->tcp_flags);
|
|
|
|
memset(&saddr, 0, sizeof(saddr));
|
|
if (dst_addr->sa_family == AF_INET) {
|
|
desti = (struct sockaddr_in *) dst_addr;
|
|
saddr.remote.v4 = *desti;
|
|
saddr.local.v4.sin_family = desti->sin_family;
|
|
} else if (dst_addr->sa_family == AF_INET6) {
|
|
desti6 = (struct sockaddr_in6 *) dst_addr;
|
|
saddr.remote.v6 = *desti6;
|
|
saddr.local.v6.sin6_family = desti6->sin6_family;
|
|
}
|
|
|
|
bnx2i_ep->timestamp = jiffies;
|
|
bnx2i_ep->state = EP_STATE_CONNECT_START;
|
|
if (!test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic)) {
|
|
rc = -EINVAL;
|
|
goto conn_failed;
|
|
} else
|
|
rc = cnic->cm_connect(bnx2i_ep->cm_sk, &saddr);
|
|
if (rc)
|
|
goto release_ep;
|
|
|
|
bnx2i_ep_active_list_add(hba, bnx2i_ep);
|
|
|
|
if (bnx2i_map_ep_dbell_regs(bnx2i_ep))
|
|
goto del_active_ep;
|
|
|
|
mutex_unlock(&hba->net_dev_lock);
|
|
return ep;
|
|
|
|
del_active_ep:
|
|
bnx2i_ep_active_list_del(hba, bnx2i_ep);
|
|
release_ep:
|
|
if (bnx2i_tear_down_conn(hba, bnx2i_ep)) {
|
|
mutex_unlock(&hba->net_dev_lock);
|
|
return ERR_PTR(rc);
|
|
}
|
|
conn_failed:
|
|
bnx2i_free_qp_resc(hba, bnx2i_ep);
|
|
qp_resc_err:
|
|
bnx2i_free_ep(ep);
|
|
check_busy:
|
|
mutex_unlock(&hba->net_dev_lock);
|
|
nohba:
|
|
return ERR_PTR(rc);
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_ep_poll - polls for TCP connection establishement
|
|
* @ep: TCP connection (endpoint) handle
|
|
* @timeout_ms: timeout value in milli secs
|
|
*
|
|
* polls for TCP connect request to complete
|
|
*/
|
|
static int bnx2i_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
|
|
{
|
|
struct bnx2i_endpoint *bnx2i_ep;
|
|
int rc = 0;
|
|
|
|
bnx2i_ep = ep->dd_data;
|
|
if ((bnx2i_ep->state == EP_STATE_IDLE) ||
|
|
(bnx2i_ep->state == EP_STATE_CONNECT_FAILED) ||
|
|
(bnx2i_ep->state == EP_STATE_OFLD_FAILED))
|
|
return -1;
|
|
if (bnx2i_ep->state == EP_STATE_CONNECT_COMPL)
|
|
return 1;
|
|
|
|
rc = wait_event_interruptible_timeout(bnx2i_ep->ofld_wait,
|
|
((bnx2i_ep->state ==
|
|
EP_STATE_OFLD_FAILED) ||
|
|
(bnx2i_ep->state ==
|
|
EP_STATE_CONNECT_FAILED) ||
|
|
(bnx2i_ep->state ==
|
|
EP_STATE_CONNECT_COMPL)),
|
|
msecs_to_jiffies(timeout_ms));
|
|
if (bnx2i_ep->state == EP_STATE_OFLD_FAILED)
|
|
rc = -1;
|
|
|
|
if (rc > 0)
|
|
return 1;
|
|
else if (!rc)
|
|
return 0; /* timeout */
|
|
else
|
|
return rc;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_ep_tcp_conn_active - check EP state transition
|
|
* @ep: endpoint pointer
|
|
*
|
|
* check if underlying TCP connection is active
|
|
*/
|
|
static int bnx2i_ep_tcp_conn_active(struct bnx2i_endpoint *bnx2i_ep)
|
|
{
|
|
int ret;
|
|
int cnic_dev_10g = 0;
|
|
|
|
if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_ep->hba->cnic_dev_type))
|
|
cnic_dev_10g = 1;
|
|
|
|
switch (bnx2i_ep->state) {
|
|
case EP_STATE_CLEANUP_FAILED:
|
|
case EP_STATE_OFLD_FAILED:
|
|
case EP_STATE_DISCONN_TIMEDOUT:
|
|
ret = 0;
|
|
break;
|
|
case EP_STATE_CONNECT_START:
|
|
case EP_STATE_CONNECT_FAILED:
|
|
case EP_STATE_CONNECT_COMPL:
|
|
case EP_STATE_ULP_UPDATE_START:
|
|
case EP_STATE_ULP_UPDATE_COMPL:
|
|
case EP_STATE_TCP_FIN_RCVD:
|
|
case EP_STATE_LOGOUT_SENT:
|
|
case EP_STATE_LOGOUT_RESP_RCVD:
|
|
case EP_STATE_ULP_UPDATE_FAILED:
|
|
ret = 1;
|
|
break;
|
|
case EP_STATE_TCP_RST_RCVD:
|
|
if (cnic_dev_10g)
|
|
ret = 0;
|
|
else
|
|
ret = 1;
|
|
break;
|
|
default:
|
|
ret = 0;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*
|
|
* bnx2i_hw_ep_disconnect - executes TCP connection teardown process in the hw
|
|
* @ep: TCP connection (bnx2i endpoint) handle
|
|
*
|
|
* executes TCP connection teardown process
|
|
*/
|
|
int bnx2i_hw_ep_disconnect(struct bnx2i_endpoint *bnx2i_ep)
|
|
{
|
|
struct bnx2i_hba *hba = bnx2i_ep->hba;
|
|
struct cnic_dev *cnic;
|
|
struct iscsi_session *session = NULL;
|
|
struct iscsi_conn *conn = NULL;
|
|
int ret = 0;
|
|
int close = 0;
|
|
int close_ret = 0;
|
|
|
|
if (!hba)
|
|
return 0;
|
|
|
|
cnic = hba->cnic;
|
|
if (!cnic)
|
|
return 0;
|
|
|
|
if (bnx2i_ep->state == EP_STATE_IDLE ||
|
|
bnx2i_ep->state == EP_STATE_DISCONN_TIMEDOUT)
|
|
return 0;
|
|
|
|
if (!bnx2i_ep_tcp_conn_active(bnx2i_ep))
|
|
goto destroy_conn;
|
|
|
|
if (bnx2i_ep->conn) {
|
|
conn = bnx2i_ep->conn->cls_conn->dd_data;
|
|
session = conn->session;
|
|
}
|
|
|
|
init_timer(&bnx2i_ep->ofld_timer);
|
|
bnx2i_ep->ofld_timer.expires = hba->conn_teardown_tmo + jiffies;
|
|
bnx2i_ep->ofld_timer.function = bnx2i_ep_ofld_timer;
|
|
bnx2i_ep->ofld_timer.data = (unsigned long) bnx2i_ep;
|
|
add_timer(&bnx2i_ep->ofld_timer);
|
|
|
|
if (!test_bit(BNX2I_CNIC_REGISTERED, &hba->reg_with_cnic))
|
|
goto out;
|
|
|
|
if (session) {
|
|
spin_lock_bh(&session->lock);
|
|
if (bnx2i_ep->state != EP_STATE_TCP_FIN_RCVD) {
|
|
if (session->state == ISCSI_STATE_LOGGING_OUT) {
|
|
if (bnx2i_ep->state == EP_STATE_LOGOUT_SENT) {
|
|
/* Logout sent, but no resp */
|
|
printk(KERN_ALERT "bnx2i (%s): WARNING"
|
|
" logout response was not "
|
|
"received!\n",
|
|
bnx2i_ep->hba->netdev->name);
|
|
} else if (bnx2i_ep->state ==
|
|
EP_STATE_LOGOUT_RESP_RCVD)
|
|
close = 1;
|
|
}
|
|
} else
|
|
close = 1;
|
|
|
|
spin_unlock_bh(&session->lock);
|
|
}
|
|
|
|
bnx2i_ep->state = EP_STATE_DISCONN_START;
|
|
|
|
if (close)
|
|
close_ret = cnic->cm_close(bnx2i_ep->cm_sk);
|
|
else
|
|
close_ret = cnic->cm_abort(bnx2i_ep->cm_sk);
|
|
|
|
if (close_ret)
|
|
printk(KERN_ALERT "bnx2i (%s): close/abort(%d) returned %d\n",
|
|
bnx2i_ep->hba->netdev->name, close, close_ret);
|
|
else
|
|
/* wait for option-2 conn teardown */
|
|
wait_event_interruptible(bnx2i_ep->ofld_wait,
|
|
bnx2i_ep->state != EP_STATE_DISCONN_START);
|
|
|
|
if (signal_pending(current))
|
|
flush_signals(current);
|
|
del_timer_sync(&bnx2i_ep->ofld_timer);
|
|
|
|
destroy_conn:
|
|
bnx2i_ep_active_list_del(hba, bnx2i_ep);
|
|
if (bnx2i_tear_down_conn(hba, bnx2i_ep))
|
|
return -EINVAL;
|
|
out:
|
|
bnx2i_ep->state = EP_STATE_IDLE;
|
|
return ret;
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_ep_disconnect - executes TCP connection teardown process
|
|
* @ep: TCP connection (iscsi endpoint) handle
|
|
*
|
|
* executes TCP connection teardown process
|
|
*/
|
|
static void bnx2i_ep_disconnect(struct iscsi_endpoint *ep)
|
|
{
|
|
struct bnx2i_endpoint *bnx2i_ep;
|
|
struct bnx2i_conn *bnx2i_conn = NULL;
|
|
struct iscsi_conn *conn = NULL;
|
|
struct bnx2i_hba *hba;
|
|
|
|
bnx2i_ep = ep->dd_data;
|
|
|
|
/* driver should not attempt connection cleanup until TCP_CONNECT
|
|
* completes either successfully or fails. Timeout is 9-secs, so
|
|
* wait for it to complete
|
|
*/
|
|
while ((bnx2i_ep->state == EP_STATE_CONNECT_START) &&
|
|
!time_after(jiffies, bnx2i_ep->timestamp + (12 * HZ)))
|
|
msleep(250);
|
|
|
|
if (bnx2i_ep->conn) {
|
|
bnx2i_conn = bnx2i_ep->conn;
|
|
conn = bnx2i_conn->cls_conn->dd_data;
|
|
iscsi_suspend_queue(conn);
|
|
}
|
|
hba = bnx2i_ep->hba;
|
|
|
|
mutex_lock(&hba->net_dev_lock);
|
|
|
|
if (bnx2i_ep->state == EP_STATE_DISCONN_TIMEDOUT)
|
|
goto out;
|
|
|
|
if (bnx2i_ep->state == EP_STATE_IDLE)
|
|
goto free_resc;
|
|
|
|
if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) ||
|
|
(bnx2i_ep->hba_age != hba->age)) {
|
|
bnx2i_ep_active_list_del(hba, bnx2i_ep);
|
|
goto free_resc;
|
|
}
|
|
|
|
/* Do all chip cleanup here */
|
|
if (bnx2i_hw_ep_disconnect(bnx2i_ep)) {
|
|
mutex_unlock(&hba->net_dev_lock);
|
|
return;
|
|
}
|
|
free_resc:
|
|
bnx2i_free_qp_resc(hba, bnx2i_ep);
|
|
|
|
if (bnx2i_conn)
|
|
bnx2i_conn->ep = NULL;
|
|
|
|
bnx2i_free_ep(ep);
|
|
out:
|
|
mutex_unlock(&hba->net_dev_lock);
|
|
|
|
wake_up_interruptible(&hba->eh_wait);
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_nl_set_path - ISCSI_UEVENT_PATH_UPDATE user message handler
|
|
* @buf: pointer to buffer containing iscsi path message
|
|
*
|
|
*/
|
|
static int bnx2i_nl_set_path(struct Scsi_Host *shost, struct iscsi_path *params)
|
|
{
|
|
struct bnx2i_hba *hba = iscsi_host_priv(shost);
|
|
char *buf = (char *) params;
|
|
u16 len = sizeof(*params);
|
|
|
|
/* handled by cnic driver */
|
|
hba->cnic->iscsi_nl_msg_recv(hba->cnic, ISCSI_UEVENT_PATH_UPDATE, buf,
|
|
len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* 'Scsi_Host_Template' structure and 'iscsi_tranport' structure template
|
|
* used while registering with the scsi host and iSCSI transport module.
|
|
*/
|
|
static struct scsi_host_template bnx2i_host_template = {
|
|
.module = THIS_MODULE,
|
|
.name = "Broadcom Offload iSCSI Initiator",
|
|
.proc_name = "bnx2i",
|
|
.queuecommand = iscsi_queuecommand,
|
|
.eh_abort_handler = iscsi_eh_abort,
|
|
.eh_device_reset_handler = iscsi_eh_device_reset,
|
|
.eh_target_reset_handler = iscsi_eh_recover_target,
|
|
.change_queue_depth = iscsi_change_queue_depth,
|
|
.can_queue = 1024,
|
|
.max_sectors = 127,
|
|
.cmd_per_lun = 32,
|
|
.this_id = -1,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.sg_tablesize = ISCSI_MAX_BDS_PER_CMD,
|
|
.shost_attrs = bnx2i_dev_attributes,
|
|
};
|
|
|
|
struct iscsi_transport bnx2i_iscsi_transport = {
|
|
.owner = THIS_MODULE,
|
|
.name = "bnx2i",
|
|
.caps = CAP_RECOVERY_L0 | CAP_HDRDGST |
|
|
CAP_MULTI_R2T | CAP_DATADGST |
|
|
CAP_DATA_PATH_OFFLOAD |
|
|
CAP_TEXT_NEGO,
|
|
.param_mask = ISCSI_MAX_RECV_DLENGTH |
|
|
ISCSI_MAX_XMIT_DLENGTH |
|
|
ISCSI_HDRDGST_EN |
|
|
ISCSI_DATADGST_EN |
|
|
ISCSI_INITIAL_R2T_EN |
|
|
ISCSI_MAX_R2T |
|
|
ISCSI_IMM_DATA_EN |
|
|
ISCSI_FIRST_BURST |
|
|
ISCSI_MAX_BURST |
|
|
ISCSI_PDU_INORDER_EN |
|
|
ISCSI_DATASEQ_INORDER_EN |
|
|
ISCSI_ERL |
|
|
ISCSI_CONN_PORT |
|
|
ISCSI_CONN_ADDRESS |
|
|
ISCSI_EXP_STATSN |
|
|
ISCSI_PERSISTENT_PORT |
|
|
ISCSI_PERSISTENT_ADDRESS |
|
|
ISCSI_TARGET_NAME | ISCSI_TPGT |
|
|
ISCSI_USERNAME | ISCSI_PASSWORD |
|
|
ISCSI_USERNAME_IN | ISCSI_PASSWORD_IN |
|
|
ISCSI_FAST_ABORT | ISCSI_ABORT_TMO |
|
|
ISCSI_LU_RESET_TMO | ISCSI_TGT_RESET_TMO |
|
|
ISCSI_PING_TMO | ISCSI_RECV_TMO |
|
|
ISCSI_IFACE_NAME | ISCSI_INITIATOR_NAME,
|
|
.host_param_mask = ISCSI_HOST_HWADDRESS | ISCSI_HOST_IPADDRESS |
|
|
ISCSI_HOST_NETDEV_NAME,
|
|
.create_session = bnx2i_session_create,
|
|
.destroy_session = bnx2i_session_destroy,
|
|
.create_conn = bnx2i_conn_create,
|
|
.bind_conn = bnx2i_conn_bind,
|
|
.destroy_conn = bnx2i_conn_destroy,
|
|
.set_param = iscsi_set_param,
|
|
.get_conn_param = iscsi_conn_get_param,
|
|
.get_session_param = iscsi_session_get_param,
|
|
.get_host_param = bnx2i_host_get_param,
|
|
.start_conn = bnx2i_conn_start,
|
|
.stop_conn = iscsi_conn_stop,
|
|
.send_pdu = iscsi_conn_send_pdu,
|
|
.xmit_task = bnx2i_task_xmit,
|
|
.get_stats = bnx2i_conn_get_stats,
|
|
/* TCP connect - disconnect - option-2 interface calls */
|
|
.get_ep_param = bnx2i_ep_get_param,
|
|
.ep_connect = bnx2i_ep_connect,
|
|
.ep_poll = bnx2i_ep_poll,
|
|
.ep_disconnect = bnx2i_ep_disconnect,
|
|
.set_path = bnx2i_nl_set_path,
|
|
/* Error recovery timeout call */
|
|
.session_recovery_timedout = iscsi_session_recovery_timedout,
|
|
.cleanup_task = bnx2i_cleanup_task,
|
|
};
|