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-rw-r--r--drivers/scsi/fnic/fnic.h2
-rw-r--r--drivers/scsi/fnic/fnic_debugfs.c238
-rw-r--r--drivers/scsi/fnic/fnic_fcs.c56
-rw-r--r--drivers/scsi/fnic/fnic_main.c20
-rw-r--r--drivers/scsi/fnic/fnic_trace.c326
-rw-r--r--drivers/scsi/fnic/fnic_trace.h38
6 files changed, 637 insertions, 43 deletions
diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
index ce88951af3d1..1d3521e13d77 100644
--- a/drivers/scsi/fnic/fnic.h
+++ b/drivers/scsi/fnic/fnic.h
@@ -39,7 +39,7 @@
#define DRV_NAME "fnic"
#define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
-#define DRV_VERSION "1.5.0.45"
+#define DRV_VERSION "1.6.0.10"
#define PFX DRV_NAME ": "
#define DFX DRV_NAME "%d: "
diff --git a/drivers/scsi/fnic/fnic_debugfs.c b/drivers/scsi/fnic/fnic_debugfs.c
index b6073f875761..2c613bdea78f 100644
--- a/drivers/scsi/fnic/fnic_debugfs.c
+++ b/drivers/scsi/fnic/fnic_debugfs.c
@@ -25,6 +25,21 @@ static struct dentry *fnic_trace_debugfs_file;
static struct dentry *fnic_trace_enable;
static struct dentry *fnic_stats_debugfs_root;
+static struct dentry *fnic_fc_trace_debugfs_file;
+static struct dentry *fnic_fc_rdata_trace_debugfs_file;
+static struct dentry *fnic_fc_trace_enable;
+static struct dentry *fnic_fc_trace_clear;
+
+struct fc_trace_flag_type {
+ u8 fc_row_file;
+ u8 fc_normal_file;
+ u8 fnic_trace;
+ u8 fc_trace;
+ u8 fc_clear;
+};
+
+static struct fc_trace_flag_type *fc_trc_flag;
+
/*
* fnic_debugfs_init - Initialize debugfs for fnic debug logging
*
@@ -56,6 +71,18 @@ int fnic_debugfs_init(void)
return rc;
}
+ /* Allocate memory to structure */
+ fc_trc_flag = (struct fc_trace_flag_type *)
+ vmalloc(sizeof(struct fc_trace_flag_type));
+
+ if (fc_trc_flag) {
+ fc_trc_flag->fc_row_file = 0;
+ fc_trc_flag->fc_normal_file = 1;
+ fc_trc_flag->fnic_trace = 2;
+ fc_trc_flag->fc_trace = 3;
+ fc_trc_flag->fc_clear = 4;
+ }
+
rc = 0;
return rc;
}
@@ -74,15 +101,19 @@ void fnic_debugfs_terminate(void)
debugfs_remove(fnic_trace_debugfs_root);
fnic_trace_debugfs_root = NULL;
+
+ if (fc_trc_flag)
+ vfree(fc_trc_flag);
}
/*
- * fnic_trace_ctrl_open - Open the trace_enable file
+ * fnic_trace_ctrl_open - Open the trace_enable file for fnic_trace
+ * Or Open fc_trace_enable file for fc_trace
* @inode: The inode pointer.
* @file: The file pointer to attach the trace enable/disable flag.
*
* Description:
- * This routine opens a debugsfs file trace_enable.
+ * This routine opens a debugsfs file trace_enable or fc_trace_enable.
*
* Returns:
* This function returns zero if successful.
@@ -94,15 +125,19 @@ static int fnic_trace_ctrl_open(struct inode *inode, struct file *filp)
}
/*
- * fnic_trace_ctrl_read - Read a trace_enable debugfs file
+ * fnic_trace_ctrl_read -
+ * Read trace_enable ,fc_trace_enable
+ * or fc_trace_clear debugfs file
* @filp: The file pointer to read from.
* @ubuf: The buffer to copy the data to.
* @cnt: The number of bytes to read.
* @ppos: The position in the file to start reading from.
*
* Description:
- * This routine reads value of variable fnic_tracing_enabled
- * and stores into local @buf. It will start reading file at @ppos and
+ * This routine reads value of variable fnic_tracing_enabled or
+ * fnic_fc_tracing_enabled or fnic_fc_trace_cleared
+ * and stores into local @buf.
+ * It will start reading file at @ppos and
* copy up to @cnt of data to @ubuf from @buf.
*
* Returns:
@@ -114,13 +149,25 @@ static ssize_t fnic_trace_ctrl_read(struct file *filp,
{
char buf[64];
int len;
- len = sprintf(buf, "%u\n", fnic_tracing_enabled);
+ u8 *trace_type;
+ len = 0;
+ trace_type = (u8 *)filp->private_data;
+ if (*trace_type == fc_trc_flag->fnic_trace)
+ len = sprintf(buf, "%u\n", fnic_tracing_enabled);
+ else if (*trace_type == fc_trc_flag->fc_trace)
+ len = sprintf(buf, "%u\n", fnic_fc_tracing_enabled);
+ else if (*trace_type == fc_trc_flag->fc_clear)
+ len = sprintf(buf, "%u\n", fnic_fc_trace_cleared);
+ else
+ pr_err("fnic: Cannot read to any debugfs file\n");
return simple_read_from_buffer(ubuf, cnt, ppos, buf, len);
}
/*
- * fnic_trace_ctrl_write - Write to trace_enable debugfs file
+ * fnic_trace_ctrl_write -
+ * Write to trace_enable, fc_trace_enable or
+ * fc_trace_clear debugfs file
* @filp: The file pointer to write from.
* @ubuf: The buffer to copy the data from.
* @cnt: The number of bytes to write.
@@ -128,7 +175,8 @@ static ssize_t fnic_trace_ctrl_read(struct file *filp,
*
* Description:
* This routine writes data from user buffer @ubuf to buffer @buf and
- * sets fnic_tracing_enabled value as per user input.
+ * sets fc_trace_enable ,tracing_enable or fnic_fc_trace_cleared
+ * value as per user input.
*
* Returns:
* This function returns the amount of data that was written.
@@ -140,6 +188,8 @@ static ssize_t fnic_trace_ctrl_write(struct file *filp,
char buf[64];
unsigned long val;
int ret;
+ u8 *trace_type;
+ trace_type = (u8 *)filp->private_data;
if (cnt >= sizeof(buf))
return -EINVAL;
@@ -153,12 +203,27 @@ static ssize_t fnic_trace_ctrl_write(struct file *filp,
if (ret < 0)
return ret;
- fnic_tracing_enabled = val;
+ if (*trace_type == fc_trc_flag->fnic_trace)
+ fnic_tracing_enabled = val;
+ else if (*trace_type == fc_trc_flag->fc_trace)
+ fnic_fc_tracing_enabled = val;
+ else if (*trace_type == fc_trc_flag->fc_clear)
+ fnic_fc_trace_cleared = val;
+ else
+ pr_err("fnic: cannot write to any debufs file\n");
+
(*ppos)++;
return cnt;
}
+static const struct file_operations fnic_trace_ctrl_fops = {
+ .owner = THIS_MODULE,
+ .open = fnic_trace_ctrl_open,
+ .read = fnic_trace_ctrl_read,
+ .write = fnic_trace_ctrl_write,
+};
+
/*
* fnic_trace_debugfs_open - Open the fnic trace log
* @inode: The inode pointer
@@ -178,19 +243,36 @@ static int fnic_trace_debugfs_open(struct inode *inode,
struct file *file)
{
fnic_dbgfs_t *fnic_dbg_prt;
+ u8 *rdata_ptr;
+ rdata_ptr = (u8 *)inode->i_private;
fnic_dbg_prt = kzalloc(sizeof(fnic_dbgfs_t), GFP_KERNEL);
if (!fnic_dbg_prt)
return -ENOMEM;
- fnic_dbg_prt->buffer = vmalloc((3*(trace_max_pages * PAGE_SIZE)));
- if (!fnic_dbg_prt->buffer) {
- kfree(fnic_dbg_prt);
- return -ENOMEM;
+ if (*rdata_ptr == fc_trc_flag->fnic_trace) {
+ fnic_dbg_prt->buffer = vmalloc(3 *
+ (trace_max_pages * PAGE_SIZE));
+ if (!fnic_dbg_prt->buffer) {
+ kfree(fnic_dbg_prt);
+ return -ENOMEM;
+ }
+ memset((void *)fnic_dbg_prt->buffer, 0,
+ 3 * (trace_max_pages * PAGE_SIZE));
+ fnic_dbg_prt->buffer_len = fnic_get_trace_data(fnic_dbg_prt);
+ } else {
+ fnic_dbg_prt->buffer =
+ vmalloc(3 * (fnic_fc_trace_max_pages * PAGE_SIZE));
+ if (!fnic_dbg_prt->buffer) {
+ kfree(fnic_dbg_prt);
+ return -ENOMEM;
+ }
+ memset((void *)fnic_dbg_prt->buffer, 0,
+ 3 * (fnic_fc_trace_max_pages * PAGE_SIZE));
+ fnic_dbg_prt->buffer_len =
+ fnic_fc_trace_get_data(fnic_dbg_prt, *rdata_ptr);
}
- memset((void *)fnic_dbg_prt->buffer, 0,
- (3*(trace_max_pages * PAGE_SIZE)));
- fnic_dbg_prt->buffer_len = fnic_get_trace_data(fnic_dbg_prt);
file->private_data = fnic_dbg_prt;
+
return 0;
}
@@ -272,13 +354,6 @@ static int fnic_trace_debugfs_release(struct inode *inode,
return 0;
}
-static const struct file_operations fnic_trace_ctrl_fops = {
- .owner = THIS_MODULE,
- .open = fnic_trace_ctrl_open,
- .read = fnic_trace_ctrl_read,
- .write = fnic_trace_ctrl_write,
-};
-
static const struct file_operations fnic_trace_debugfs_fops = {
.owner = THIS_MODULE,
.open = fnic_trace_debugfs_open,
@@ -306,9 +381,10 @@ int fnic_trace_debugfs_init(void)
return rc;
}
fnic_trace_enable = debugfs_create_file("tracing_enable",
- S_IFREG|S_IRUGO|S_IWUSR,
- fnic_trace_debugfs_root,
- NULL, &fnic_trace_ctrl_fops);
+ S_IFREG|S_IRUGO|S_IWUSR,
+ fnic_trace_debugfs_root,
+ &(fc_trc_flag->fnic_trace),
+ &fnic_trace_ctrl_fops);
if (!fnic_trace_enable) {
printk(KERN_DEBUG
@@ -317,10 +393,10 @@ int fnic_trace_debugfs_init(void)
}
fnic_trace_debugfs_file = debugfs_create_file("trace",
- S_IFREG|S_IRUGO|S_IWUSR,
- fnic_trace_debugfs_root,
- NULL,
- &fnic_trace_debugfs_fops);
+ S_IFREG|S_IRUGO|S_IWUSR,
+ fnic_trace_debugfs_root,
+ &(fc_trc_flag->fnic_trace),
+ &fnic_trace_debugfs_fops);
if (!fnic_trace_debugfs_file) {
printk(KERN_DEBUG
@@ -340,14 +416,104 @@ int fnic_trace_debugfs_init(void)
*/
void fnic_trace_debugfs_terminate(void)
{
- if (fnic_trace_debugfs_file) {
- debugfs_remove(fnic_trace_debugfs_file);
- fnic_trace_debugfs_file = NULL;
+ debugfs_remove(fnic_trace_debugfs_file);
+ fnic_trace_debugfs_file = NULL;
+
+ debugfs_remove(fnic_trace_enable);
+ fnic_trace_enable = NULL;
+}
+
+/*
+ * fnic_fc_trace_debugfs_init -
+ * Initialize debugfs for fnic control frame trace logging
+ *
+ * Description:
+ * When Debugfs is configured this routine sets up the fnic_fc debugfs
+ * file system. If not already created, this routine will create the
+ * create file trace to log fnic fc trace buffer output into debugfs and
+ * it will also create file fc_trace_enable to control enable/disable of
+ * trace logging into trace buffer.
+ */
+
+int fnic_fc_trace_debugfs_init(void)
+{
+ int rc = -1;
+
+ if (!fnic_trace_debugfs_root) {
+ pr_err("fnic:Debugfs root directory doesn't exist\n");
+ return rc;
+ }
+
+ fnic_fc_trace_enable = debugfs_create_file("fc_trace_enable",
+ S_IFREG|S_IRUGO|S_IWUSR,
+ fnic_trace_debugfs_root,
+ &(fc_trc_flag->fc_trace),
+ &fnic_trace_ctrl_fops);
+
+ if (!fnic_fc_trace_enable) {
+ pr_err("fnic: Failed create fc_trace_enable file\n");
+ return rc;
+ }
+
+ fnic_fc_trace_clear = debugfs_create_file("fc_trace_clear",
+ S_IFREG|S_IRUGO|S_IWUSR,
+ fnic_trace_debugfs_root,
+ &(fc_trc_flag->fc_clear),
+ &fnic_trace_ctrl_fops);
+
+ if (!fnic_fc_trace_clear) {
+ pr_err("fnic: Failed to create fc_trace_enable file\n");
+ return rc;
+ }
+
+ fnic_fc_rdata_trace_debugfs_file =
+ debugfs_create_file("fc_trace_rdata",
+ S_IFREG|S_IRUGO|S_IWUSR,
+ fnic_trace_debugfs_root,
+ &(fc_trc_flag->fc_normal_file),
+ &fnic_trace_debugfs_fops);
+
+ if (!fnic_fc_rdata_trace_debugfs_file) {
+ pr_err("fnic: Failed create fc_rdata_trace file\n");
+ return rc;
}
- if (fnic_trace_enable) {
- debugfs_remove(fnic_trace_enable);
- fnic_trace_enable = NULL;
+
+ fnic_fc_trace_debugfs_file =
+ debugfs_create_file("fc_trace",
+ S_IFREG|S_IRUGO|S_IWUSR,
+ fnic_trace_debugfs_root,
+ &(fc_trc_flag->fc_row_file),
+ &fnic_trace_debugfs_fops);
+
+ if (!fnic_fc_trace_debugfs_file) {
+ pr_err("fnic: Failed to create fc_trace file\n");
+ return rc;
}
+ rc = 0;
+ return rc;
+}
+
+/*
+ * fnic_fc_trace_debugfs_terminate - Tear down debugfs infrastructure
+ *
+ * Description:
+ * When Debugfs is configured this routine removes debugfs file system
+ * elements that are specific to fnic_fc trace logging.
+ */
+
+void fnic_fc_trace_debugfs_terminate(void)
+{
+ debugfs_remove(fnic_fc_trace_debugfs_file);
+ fnic_fc_trace_debugfs_file = NULL;
+
+ debugfs_remove(fnic_fc_rdata_trace_debugfs_file);
+ fnic_fc_rdata_trace_debugfs_file = NULL;
+
+ debugfs_remove(fnic_fc_trace_enable);
+ fnic_fc_trace_enable = NULL;
+
+ debugfs_remove(fnic_fc_trace_clear);
+ fnic_fc_trace_clear = NULL;
}
/*
diff --git a/drivers/scsi/fnic/fnic_fcs.c b/drivers/scsi/fnic/fnic_fcs.c
index 1711cd59dece..1b948f633fc5 100644
--- a/drivers/scsi/fnic/fnic_fcs.c
+++ b/drivers/scsi/fnic/fnic_fcs.c
@@ -66,19 +66,35 @@ void fnic_handle_link(struct work_struct *work)
fnic->link_down_cnt = vnic_dev_link_down_cnt(fnic->vdev);
if (old_link_status == fnic->link_status) {
- if (!fnic->link_status)
+ if (!fnic->link_status) {
/* DOWN -> DOWN */
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
- else {
+ fnic_fc_trace_set_data(fnic->lport->host->host_no,
+ FNIC_FC_LE, "Link Status: DOWN->DOWN",
+ strlen("Link Status: DOWN->DOWN"));
+ } else {
if (old_link_down_cnt != fnic->link_down_cnt) {
/* UP -> DOWN -> UP */
fnic->lport->host_stats.link_failure_count++;
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
+ fnic_fc_trace_set_data(
+ fnic->lport->host->host_no,
+ FNIC_FC_LE,
+ "Link Status:UP_DOWN_UP",
+ strlen("Link_Status:UP_DOWN_UP")
+ );
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
"link down\n");
fcoe_ctlr_link_down(&fnic->ctlr);
if (fnic->config.flags & VFCF_FIP_CAPABLE) {
/* start FCoE VLAN discovery */
+ fnic_fc_trace_set_data(
+ fnic->lport->host->host_no,
+ FNIC_FC_LE,
+ "Link Status: UP_DOWN_UP_VLAN",
+ strlen(
+ "Link Status: UP_DOWN_UP_VLAN")
+ );
fnic_fcoe_send_vlan_req(fnic);
return;
}
@@ -88,22 +104,36 @@ void fnic_handle_link(struct work_struct *work)
} else
/* UP -> UP */
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
+ fnic_fc_trace_set_data(
+ fnic->lport->host->host_no, FNIC_FC_LE,
+ "Link Status: UP_UP",
+ strlen("Link Status: UP_UP"));
}
} else if (fnic->link_status) {
/* DOWN -> UP */
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
if (fnic->config.flags & VFCF_FIP_CAPABLE) {
/* start FCoE VLAN discovery */
+ fnic_fc_trace_set_data(
+ fnic->lport->host->host_no,
+ FNIC_FC_LE, "Link Status: DOWN_UP_VLAN",
+ strlen("Link Status: DOWN_UP_VLAN"));
fnic_fcoe_send_vlan_req(fnic);
return;
}
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link up\n");
+ fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_LE,
+ "Link Status: DOWN_UP", strlen("Link Status: DOWN_UP"));
fcoe_ctlr_link_up(&fnic->ctlr);
} else {
/* UP -> DOWN */
fnic->lport->host_stats.link_failure_count++;
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link down\n");
+ fnic_fc_trace_set_data(
+ fnic->lport->host->host_no, FNIC_FC_LE,
+ "Link Status: UP_DOWN",
+ strlen("Link Status: UP_DOWN"));
fcoe_ctlr_link_down(&fnic->ctlr);
}
@@ -611,6 +641,10 @@ static inline int fnic_import_rq_eth_pkt(struct fnic *fnic, struct sk_buff *skb)
"using UCSM\n");
goto drop;
}
+ if ((fnic_fc_trace_set_data(fnic->lport->host->host_no,
+ FNIC_FC_RECV|0x80, (char *)skb->data, skb->len)) != 0) {
+ printk(KERN_ERR "fnic ctlr frame trace error!!!");
+ }
skb_queue_tail(&fnic->fip_frame_queue, skb);
queue_work(fnic_fip_queue, &fnic->fip_frame_work);
return 1; /* let caller know packet was used */
@@ -839,6 +873,10 @@ static void fnic_rq_cmpl_frame_recv(struct vnic_rq *rq, struct cq_desc
}
fr_dev(fp) = fnic->lport;
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
+ if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_RECV,
+ (char *)skb->data, skb->len)) != 0) {
+ printk(KERN_ERR "fnic ctlr frame trace error!!!");
+ }
skb_queue_tail(&fnic->frame_queue, skb);
queue_work(fnic_event_queue, &fnic->frame_work);
@@ -946,6 +984,15 @@ void fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q);
vlan_hdr->h_vlan_encapsulated_proto = eth_hdr->h_proto;
vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id);
+ if ((fnic_fc_trace_set_data(fnic->lport->host->host_no,
+ FNIC_FC_SEND|0x80, (char *)eth_hdr, skb->len)) != 0) {
+ printk(KERN_ERR "fnic ctlr frame trace error!!!");
+ }
+ } else {
+ if ((fnic_fc_trace_set_data(fnic->lport->host->host_no,
+ FNIC_FC_SEND|0x80, (char *)skb->data, skb->len)) != 0) {
+ printk(KERN_ERR "fnic ctlr frame trace error!!!");
+ }
}
pa = pci_map_single(fnic->pdev, skb->data, skb->len, PCI_DMA_TODEVICE);
@@ -1018,6 +1065,11 @@ static int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp)
pa = pci_map_single(fnic->pdev, eth_hdr, tot_len, PCI_DMA_TODEVICE);
+ if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_SEND,
+ (char *)eth_hdr, tot_len)) != 0) {
+ printk(KERN_ERR "fnic ctlr frame trace error!!!");
+ }
+
spin_lock_irqsave(&fnic->wq_lock[0], flags);
if (!vnic_wq_desc_avail(wq)) {
diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c
index 05657da583a2..8c56fdc3a456 100644
--- a/drivers/scsi/fnic/fnic_main.c
+++ b/drivers/scsi/fnic/fnic_main.c
@@ -74,6 +74,11 @@ module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages "
"for fnic trace buffer");
+unsigned int fnic_fc_trace_max_pages = 64;
+module_param(fnic_fc_trace_max_pages, uint, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(fnic_fc_trace_max_pages,
+ "Total allocated memory pages for fc trace buffer");
+
static unsigned int fnic_max_qdepth = FNIC_DFLT_QUEUE_DEPTH;
module_param(fnic_max_qdepth, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(fnic_max_qdepth, "Queue depth to report for each LUN");
@@ -1034,11 +1039,20 @@ static int __init fnic_init_module(void)
/* Allocate memory for trace buffer */
err = fnic_trace_buf_init();
if (err < 0) {
- printk(KERN_ERR PFX "Trace buffer initialization Failed "
- "Fnic Tracing utility is disabled\n");
+ printk(KERN_ERR PFX
+ "Trace buffer initialization Failed. "
+ "Fnic Tracing utility is disabled\n");
fnic_trace_free();
}
+ /* Allocate memory for fc trace buffer */
+ err = fnic_fc_trace_init();
+ if (err < 0) {
+ printk(KERN_ERR PFX "FC trace buffer initialization Failed "
+ "FC frame tracing utility is disabled\n");
+ fnic_fc_trace_free();
+ }
+
/* Create a cache for allocation of default size sgls */
len = sizeof(struct fnic_dflt_sgl_list);
fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
@@ -1119,6 +1133,7 @@ err_create_fnic_sgl_slab_max:
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
err_create_fnic_sgl_slab_dflt:
fnic_trace_free();
+ fnic_fc_trace_free();
fnic_debugfs_terminate();
return err;
}
@@ -1136,6 +1151,7 @@ static void __exit fnic_cleanup_module(void)
kmem_cache_destroy(fnic_io_req_cache);
fc_release_transport(fnic_fc_transport);
fnic_trace_free();
+ fnic_fc_trace_free();
fnic_debugfs_terminate();
}
diff --git a/drivers/scsi/fnic/fnic_trace.c b/drivers/scsi/fnic/fnic_trace.c
index e002e7187dc0..c77285926827 100644
--- a/drivers/scsi/fnic/fnic_trace.c
+++ b/drivers/scsi/fnic/fnic_trace.c
@@ -20,6 +20,7 @@
#include <linux/errno.h>
#include <linux/spinlock.h>
#include <linux/kallsyms.h>
+#include <linux/time.h>
#include "fnic_io.h"
#include "fnic.h"
@@ -32,6 +33,16 @@ static DEFINE_SPINLOCK(fnic_trace_lock);
static fnic_trace_dbg_t fnic_trace_entries;
int fnic_tracing_enabled = 1;
+/* static char *fnic_fc_ctlr_trace_buf_p; */
+
+static int fc_trace_max_entries;
+static unsigned long fnic_fc_ctlr_trace_buf_p;
+static fnic_trace_dbg_t fc_trace_entries;
+int fnic_fc_tracing_enabled = 1;
+int fnic_fc_trace_cleared = 1;
+static DEFINE_SPINLOCK(fnic_fc_trace_lock);
+
+
/*
* fnic_trace_get_buf - Give buffer pointer to user to fill up trace information
*
@@ -428,10 +439,10 @@ int fnic_trace_buf_init(void)
}
err = fnic_trace_debugfs_init();
if (err < 0) {
- printk(KERN_ERR PFX "Failed to initialize debugfs for tracing\n");
+ pr_err("fnic: Failed to initialize debugfs for tracing\n");
goto err_fnic_trace_debugfs_init;
}
- printk(KERN_INFO PFX "Successfully Initialized Trace Buffer\n");
+ pr_info("fnic: Successfully Initialized Trace Buffer\n");
return err;
err_fnic_trace_debugfs_init:
fnic_trace_free();
@@ -456,3 +467,314 @@ void fnic_trace_free(void)
}
printk(KERN_INFO PFX "Successfully Freed Trace Buffer\n");
}
+
+/*
+ * fnic_fc_ctlr_trace_buf_init -
+ * Initialize trace buffer to log fnic control frames
+ * Description:
+ * Initialize trace buffer data structure by allocating
+ * required memory for trace data as well as for Indexes.
+ * Frame size is 256 bytes and
+ * memory is allocated for 1024 entries of 256 bytes.
+ * Page_offset(Index) is set to the address of trace entry
+ * and page_offset is initialized by adding frame size
+ * to the previous page_offset entry.
+ */
+
+int fnic_fc_trace_init(void)
+{
+ unsigned long fc_trace_buf_head;
+ int err = 0;
+ int i;
+
+ fc_trace_max_entries = (fnic_fc_trace_max_pages * PAGE_SIZE)/
+ FC_TRC_SIZE_BYTES;
+ fnic_fc_ctlr_trace_buf_p = (unsigned long)vmalloc(
+ fnic_fc_trace_max_pages * PAGE_SIZE);
+ if (!fnic_fc_ctlr_trace_buf_p) {
+ pr_err("fnic: Failed to allocate memory for "
+ "FC Control Trace Buf\n");
+ err = -ENOMEM;
+ goto err_fnic_fc_ctlr_trace_buf_init;
+ }
+
+ memset((void *)fnic_fc_ctlr_trace_buf_p, 0,
+ fnic_fc_trace_max_pages * PAGE_SIZE);
+
+ /* Allocate memory for page offset */
+ fc_trace_entries.page_offset = vmalloc(fc_trace_max_entries *
+ sizeof(unsigned long));
+ if (!fc_trace_entries.page_offset) {
+ pr_err("fnic:Failed to allocate memory for page_offset\n");
+ if (fnic_fc_ctlr_trace_buf_p) {
+ pr_err("fnic: Freeing FC Control Trace Buf\n");
+ vfree((void *)fnic_fc_ctlr_trace_buf_p);
+ fnic_fc_ctlr_trace_buf_p = 0;
+ }
+ err = -ENOMEM;
+ goto err_fnic_fc_ctlr_trace_buf_init;
+ }
+ memset((void *)fc_trace_entries.page_offset, 0,
+ (fc_trace_max_entries * sizeof(unsigned long)));
+
+ fc_trace_entries.rd_idx = fc_trace_entries.wr_idx = 0;
+ fc_trace_buf_head = fnic_fc_ctlr_trace_buf_p;
+
+ /*
+ * Set up fc_trace_entries.page_offset field with memory location
+ * for every trace entry
+ */
+ for (i = 0; i < fc_trace_max_entries; i++) {
+ fc_trace_entries.page_offset[i] = fc_trace_buf_head;
+ fc_trace_buf_head += FC_TRC_SIZE_BYTES;
+ }
+ err = fnic_fc_trace_debugfs_init();
+ if (err < 0) {
+ pr_err("fnic: Failed to initialize FC_CTLR tracing.\n");
+ goto err_fnic_fc_ctlr_trace_debugfs_init;
+ }
+ pr_info("fnic: Successfully Initialized FC_CTLR Trace Buffer\n");
+ return err;
+
+err_fnic_fc_ctlr_trace_debugfs_init:
+ fnic_fc_trace_free();
+err_fnic_fc_ctlr_trace_buf_init:
+ return err;
+}
+
+/*
+ * Fnic_fc_ctlr_trace_free - Free memory of fnic_fc_ctlr trace data structures.
+ */
+void fnic_fc_trace_free(void)
+{
+ fnic_fc_tracing_enabled = 0;
+ fnic_fc_trace_debugfs_terminate();
+ if (fc_trace_entries.page_offset) {
+ vfree((void *)fc_trace_entries.page_offset);
+ fc_trace_entries.page_offset = NULL;
+ }
+ if (fnic_fc_ctlr_trace_buf_p) {
+ vfree((void *)fnic_fc_ctlr_trace_buf_p);
+ fnic_fc_ctlr_trace_buf_p = 0;
+ }
+ pr_info("fnic:Successfully FC_CTLR Freed Trace Buffer\n");
+}
+
+/*
+ * fnic_fc_ctlr_set_trace_data:
+ * Maintain rd & wr idx accordingly and set data
+ * Passed parameters:
+ * host_no: host number accociated with fnic
+ * frame_type: send_frame, rece_frame or link event
+ * fc_frame: pointer to fc_frame
+ * frame_len: Length of the fc_frame
+ * Description:
+ * This routine will get next available wr_idx and
+ * copy all passed trace data to the buffer pointed by wr_idx
+ * and increment wr_idx. It will also make sure that we dont
+ * overwrite the entry which we are reading and also
+ * wrap around if we reach the maximum entries.
+ * Returned Value:
+ * It will return 0 for success or -1 for failure
+ */
+int fnic_fc_trace_set_data(u32 host_no, u8 frame_type,
+ char *frame, u32 fc_trc_frame_len)
+{
+ unsigned long flags;
+ struct fc_trace_hdr *fc_buf;
+ unsigned long eth_fcoe_hdr_len;
+ char *fc_trace;
+
+ if (fnic_fc_tracing_enabled == 0)
+ return 0;
+
+ spin_lock_irqsave(&fnic_fc_trace_lock, flags);
+
+ if (fnic_fc_trace_cleared == 1) {
+ fc_trace_entries.rd_idx = fc_trace_entries.wr_idx = 0;
+ pr_info("fnic: Reseting the read idx\n");
+ memset((void *)fnic_fc_ctlr_trace_buf_p, 0,
+ fnic_fc_trace_max_pages * PAGE_SIZE);
+ fnic_fc_trace_cleared = 0;
+ }
+
+ fc_buf = (struct fc_trace_hdr *)
+ fc_trace_entries.page_offset[fc_trace_entries.wr_idx];
+
+ fc_trace_entries.wr_idx++;
+
+ if (fc_trace_entries.wr_idx >= fc_trace_max_entries)
+ fc_trace_entries.wr_idx = 0;
+
+ if (fc_trace_entries.wr_idx == fc_trace_entries.rd_idx) {
+ fc_trace_entries.rd_idx++;
+ if (fc_trace_entries.rd_idx >= fc_trace_max_entries)
+ fc_trace_entries.rd_idx = 0;
+ }
+
+ fc_buf->time_stamp = CURRENT_TIME;
+ fc_buf->host_no = host_no;
+ fc_buf->frame_type = frame_type;
+
+ fc_trace = (char *)FC_TRACE_ADDRESS(fc_buf);
+
+ /* During the receive path, we do not have eth hdr as well as fcoe hdr
+ * at trace entry point so we will stuff 0xff just to make it generic.
+ */
+ if (frame_type == FNIC_FC_RECV) {
+ eth_fcoe_hdr_len = sizeof(struct ethhdr) +
+ sizeof(struct fcoe_hdr);
+ fc_trc_frame_len = fc_trc_frame_len + eth_fcoe_hdr_len;
+ memset((char *)fc_trace, 0xff, eth_fcoe_hdr_len);
+ /* Copy the rest of data frame */
+ memcpy((char *)(fc_trace + eth_fcoe_hdr_len), (void *)frame,
+ min_t(u8, fc_trc_frame_len,
+ (u8)(FC_TRC_SIZE_BYTES - FC_TRC_HEADER_SIZE)));
+ } else {
+ memcpy((char *)fc_trace, (void *)frame,
+ min_t(u8, fc_trc_frame_len,
+ (u8)(FC_TRC_SIZE_BYTES - FC_TRC_HEADER_SIZE)));
+ }
+
+ /* Store the actual received length */
+ fc_buf->frame_len = fc_trc_frame_len;
+
+ spin_unlock_irqrestore(&fnic_fc_trace_lock, flags);
+ return 0;
+}
+
+/*
+ * fnic_fc_ctlr_get_trace_data: Copy trace buffer to a memory file
+ * Passed parameter:
+ * @fnic_dbgfs_t: pointer to debugfs trace buffer
+ * rdata_flag: 1 => Unformated file
+ * 0 => formated file
+ * Description:
+ * This routine will copy the trace data to memory file with
+ * proper formatting and also copy to another memory
+ * file without formatting for further procesing.
+ * Retrun Value:
+ * Number of bytes that were dumped into fnic_dbgfs_t
+ */
+
+int fnic_fc_trace_get_data(fnic_dbgfs_t *fnic_dbgfs_prt, u8 rdata_flag)
+{
+ int rd_idx, wr_idx;
+ unsigned long flags;
+ int len = 0, j;
+ struct fc_trace_hdr *tdata;
+ char *fc_trace;
+
+ spin_lock_irqsave(&fnic_fc_trace_lock, flags);
+ if (fc_trace_entries.wr_idx == fc_trace_entries.rd_idx) {
+ spin_unlock_irqrestore(&fnic_fc_trace_lock, flags);
+ pr_info("fnic: Buffer is empty\n");
+ return 0;
+ }
+ rd_idx = fc_trace_entries.rd_idx;
+ wr_idx = fc_trace_entries.wr_idx;
+ if (rdata_flag == 0) {
+ len += snprintf(fnic_dbgfs_prt->buffer + len,
+ (fnic_fc_trace_max_pages * PAGE_SIZE * 3) - len,
+ "Time Stamp (UTC)\t\t"
+ "Host No: F Type: len: FCoE_FRAME:\n");
+ }
+
+ while (rd_idx != wr_idx) {
+ tdata = (struct fc_trace_hdr *)
+ fc_trace_entries.page_offset[rd_idx];
+ if (!tdata) {
+ pr_info("fnic: Rd data is NULL\n");
+ spin_unlock_irqrestore(&fnic_fc_trace_lock, flags);
+ return 0;
+ }
+ if (rdata_flag == 0) {
+ copy_and_format_trace_data(tdata,
+ fnic_dbgfs_prt, &len, rdata_flag);
+ } else {
+ fc_trace = (char *)tdata;
+ for (j = 0; j < FC_TRC_SIZE_BYTES; j++) {
+ len += snprintf(fnic_dbgfs_prt->buffer + len,
+ (fnic_fc_trace_max_pages * PAGE_SIZE * 3)
+ - len, "%02x", fc_trace[j] & 0xff);
+ } /* for loop */
+ len += snprintf(fnic_dbgfs_prt->buffer + len,
+ (fnic_fc_trace_max_pages * PAGE_SIZE * 3) - len,
+ "\n");
+ }
+ rd_idx++;
+ if (rd_idx > (fc_trace_max_entries - 1))
+ rd_idx = 0;
+ }
+
+ spin_unlock_irqrestore(&fnic_fc_trace_lock, flags);
+ return len;
+}
+
+/*
+ * copy_and_format_trace_data: Copy formatted data to char * buffer
+ * Passed Parameter:
+ * @fc_trace_hdr_t: pointer to trace data
+ * @fnic_dbgfs_t: pointer to debugfs trace buffer
+ * @orig_len: pointer to len
+ * rdata_flag: 0 => Formated file, 1 => Unformated file
+ * Description:
+ * This routine will format and copy the passed trace data
+ * for formated file or unformated file accordingly.
+ */
+
+void copy_and_format_trace_data(struct fc_trace_hdr *tdata,
+ fnic_dbgfs_t *fnic_dbgfs_prt, int *orig_len,
+ u8 rdata_flag)
+{
+ struct tm tm;
+ int j, i = 1, len;
+ char *fc_trace, *fmt;
+ int ethhdr_len = sizeof(struct ethhdr) - 1;
+ int fcoehdr_len = sizeof(struct fcoe_hdr);
+ int fchdr_len = sizeof(struct fc_frame_header);
+ int max_size = fnic_fc_trace_max_pages * PAGE_SIZE * 3;
+
+ tdata->frame_type = tdata->frame_type & 0x7F;
+
+ len = *orig_len;
+
+ time_to_tm(tdata->time_stamp.tv_sec, 0, &tm);
+
+ fmt = "%02d:%02d:%04ld %02d:%02d:%02d.%09lu ns%8x %c%8x\t";
+ len += snprintf(fnic_dbgfs_prt->buffer + len,
+ (fnic_fc_trace_max_pages * PAGE_SIZE * 3) - len,
+ fmt,
+ tm.tm_mon + 1, tm.tm_mday, tm.tm_year + 1900,
+ tm.tm_hour, tm.tm_min, tm.tm_sec,
+ tdata->time_stamp.tv_nsec, tdata->host_no,
+ tdata->frame_type, tdata->frame_len);
+
+ fc_trace = (char *)FC_TRACE_ADDRESS(tdata);
+
+ for (j = 0; j < min_t(u8, tdata->frame_len,
+ (u8)(FC_TRC_SIZE_BYTES - FC_TRC_HEADER_SIZE)); j++) {
+ if (tdata->frame_type == FNIC_FC_LE) {
+ len += snprintf(fnic_dbgfs_prt->buffer + len,
+ max_size - len, "%c", fc_trace[j]);
+ } else {
+ len += snprintf(fnic_dbgfs_prt->buffer + len,
+ max_size - len, "%02x", fc_trace[j] & 0xff);
+ len += snprintf(fnic_dbgfs_prt->buffer + len,
+ max_size - len, " ");
+ if (j == ethhdr_len ||
+ j == ethhdr_len + fcoehdr_len ||
+ j == ethhdr_len + fcoehdr_len + fchdr_len ||
+ (i > 3 && j%fchdr_len == 0)) {
+ len += snprintf(fnic_dbgfs_prt->buffer
+ + len, (fnic_fc_trace_max_pages
+ * PAGE_SIZE * 3) - len,
+ "\n\t\t\t\t\t\t\t\t");
+ i++;
+ }
+ } /* end of else*/
+ } /* End of for loop*/
+ len += snprintf(fnic_dbgfs_prt->buffer + len,
+ max_size - len, "\n");
+ *orig_len = len;
+}
diff --git a/drivers/scsi/fnic/fnic_trace.h b/drivers/scsi/fnic/fnic_trace.h
index d412f2ee3c4f..a8aa0578fcb0 100644
--- a/drivers/scsi/fnic/fnic_trace.h
+++ b/drivers/scsi/fnic/fnic_trace.h
@@ -19,6 +19,17 @@
#define __FNIC_TRACE_H__
#define FNIC_ENTRY_SIZE_BYTES 64
+#define FC_TRC_SIZE_BYTES 256
+#define FC_TRC_HEADER_SIZE sizeof(struct fc_trace_hdr)
+
+/*
+ * Fisrt bit of FNIC_FC_RECV and FNIC_FC_SEND is used to represent the type
+ * of frame 1 => Eth frame, 0=> FC frame
+ */
+
+#define FNIC_FC_RECV 0x52 /* Character R */
+#define FNIC_FC_SEND 0x54 /* Character T */
+#define FNIC_FC_LE 0x4C /* Character L */
extern ssize_t simple_read_from_buffer(void __user *to,
size_t count,
@@ -30,6 +41,10 @@ extern unsigned int fnic_trace_max_pages;
extern int fnic_tracing_enabled;
extern unsigned int trace_max_pages;
+extern unsigned int fnic_fc_trace_max_pages;
+extern int fnic_fc_tracing_enabled;
+extern int fnic_fc_trace_cleared;
+
typedef struct fnic_trace_dbg {
int wr_idx;
int rd_idx;
@@ -56,6 +71,16 @@ struct fnic_trace_data {
typedef struct fnic_trace_data fnic_trace_data_t;
+struct fc_trace_hdr {
+ struct timespec time_stamp;
+ u32 host_no;
+ u8 frame_type;
+ u8 frame_len;
+} __attribute__((__packed__));
+
+#define FC_TRACE_ADDRESS(a) \
+ ((unsigned long)(a) + sizeof(struct fc_trace_hdr))
+
#define FNIC_TRACE_ENTRY_SIZE \
(FNIC_ENTRY_SIZE_BYTES - sizeof(fnic_trace_data_t))
@@ -88,4 +113,17 @@ int fnic_debugfs_init(void);
void fnic_debugfs_terminate(void);
int fnic_trace_debugfs_init(void);
void fnic_trace_debugfs_terminate(void);
+
+/* Fnic FC CTLR Trace releated function */
+int fnic_fc_trace_init(void);
+void fnic_fc_trace_free(void);
+int fnic_fc_trace_set_data(u32 host_no, u8 frame_type,
+ char *frame, u32 fc_frame_len);
+int fnic_fc_trace_get_data(fnic_dbgfs_t *fnic_dbgfs_prt, u8 rdata_flag);
+void copy_and_format_trace_data(struct fc_trace_hdr *tdata,
+ fnic_dbgfs_t *fnic_dbgfs_prt,
+ int *len, u8 rdata_flag);
+int fnic_fc_trace_debugfs_init(void);
+void fnic_fc_trace_debugfs_terminate(void);
+
#endif
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.