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authorBrian King <brking@linux.vnet.ibm.com>2010-09-09 16:20:42 -0500
committerJames Bottomley <James.Bottomley@suse.de>2010-09-16 22:54:13 -0400
commitd99e5f488ae28d9dfccc84435f4fd29bd1fe1b9b (patch)
tree5ffe7c2218d2ffd563505bd9612656f223f6dbb1
parente6a4202aa920a25db76f0e02dabe133179293ec0 (diff)
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[SCSI] ibmvfc: Log link up/down events
By default, ibmvfc does not log any async events in order to avoid flooding the log with them. Improve on this by logging by default events that are not likely to flood the log, such as link up/down. Having these events in the log will improve the ability to debug issues with ibmvfc. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c74
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.h6
2 files changed, 56 insertions, 24 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index a5dd9b4..b1512e9 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -2501,41 +2501,66 @@ static void ibmvfc_terminate_rport_io(struct fc_rport *rport)
LEAVE;
}
-static const struct {
- enum ibmvfc_async_event ae;
- const char *desc;
-} ae_desc [] = {
- { IBMVFC_AE_ELS_PLOGI, "PLOGI" },
- { IBMVFC_AE_ELS_LOGO, "LOGO" },
- { IBMVFC_AE_ELS_PRLO, "PRLO" },
- { IBMVFC_AE_SCN_NPORT, "N-Port SCN" },
- { IBMVFC_AE_SCN_GROUP, "Group SCN" },
- { IBMVFC_AE_SCN_DOMAIN, "Domain SCN" },
- { IBMVFC_AE_SCN_FABRIC, "Fabric SCN" },
- { IBMVFC_AE_LINK_UP, "Link Up" },
- { IBMVFC_AE_LINK_DOWN, "Link Down" },
- { IBMVFC_AE_LINK_DEAD, "Link Dead" },
- { IBMVFC_AE_HALT, "Halt" },
- { IBMVFC_AE_RESUME, "Resume" },
- { IBMVFC_AE_ADAPTER_FAILED, "Adapter Failed" },
+static const struct ibmvfc_async_desc ae_desc [] = {
+ { IBMVFC_AE_ELS_PLOGI, "PLOGI", IBMVFC_DEFAULT_LOG_LEVEL + 1 },
+ { IBMVFC_AE_ELS_LOGO, "LOGO", IBMVFC_DEFAULT_LOG_LEVEL + 1 },
+ { IBMVFC_AE_ELS_PRLO, "PRLO", IBMVFC_DEFAULT_LOG_LEVEL + 1 },
+ { IBMVFC_AE_SCN_NPORT, "N-Port SCN", IBMVFC_DEFAULT_LOG_LEVEL + 1 },
+ { IBMVFC_AE_SCN_GROUP, "Group SCN", IBMVFC_DEFAULT_LOG_LEVEL + 1 },
+ { IBMVFC_AE_SCN_DOMAIN, "Domain SCN", IBMVFC_DEFAULT_LOG_LEVEL },
+ { IBMVFC_AE_SCN_FABRIC, "Fabric SCN", IBMVFC_DEFAULT_LOG_LEVEL },
+ { IBMVFC_AE_LINK_UP, "Link Up", IBMVFC_DEFAULT_LOG_LEVEL },
+ { IBMVFC_AE_LINK_DOWN, "Link Down", IBMVFC_DEFAULT_LOG_LEVEL },
+ { IBMVFC_AE_LINK_DEAD, "Link Dead", IBMVFC_DEFAULT_LOG_LEVEL },
+ { IBMVFC_AE_HALT, "Halt", IBMVFC_DEFAULT_LOG_LEVEL },
+ { IBMVFC_AE_RESUME, "Resume", IBMVFC_DEFAULT_LOG_LEVEL },
+ { IBMVFC_AE_ADAPTER_FAILED, "Adapter Failed", IBMVFC_DEFAULT_LOG_LEVEL },
};
-static const char *unknown_ae = "Unknown async";
+static const struct ibmvfc_async_desc unknown_ae = {
+ 0, "Unknown async", IBMVFC_DEFAULT_LOG_LEVEL
+};
/**
* ibmvfc_get_ae_desc - Get text description for async event
* @ae: async event
*
**/
-static const char *ibmvfc_get_ae_desc(u64 ae)
+static const struct ibmvfc_async_desc *ibmvfc_get_ae_desc(u64 ae)
{
int i;
for (i = 0; i < ARRAY_SIZE(ae_desc); i++)
if (ae_desc[i].ae == ae)
- return ae_desc[i].desc;
+ return &ae_desc[i];
+
+ return &unknown_ae;
+}
+
+static const struct {
+ enum ibmvfc_ae_link_state state;
+ const char *desc;
+} link_desc [] = {
+ { IBMVFC_AE_LS_LINK_UP, " link up" },
+ { IBMVFC_AE_LS_LINK_BOUNCED, " link bounced" },
+ { IBMVFC_AE_LS_LINK_DOWN, " link down" },
+ { IBMVFC_AE_LS_LINK_DEAD, " link dead" },
+};
+
+/**
+ * ibmvfc_get_link_state - Get text description for link state
+ * @state: link state
+ *
+ **/
+static const char *ibmvfc_get_link_state(enum ibmvfc_ae_link_state state)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(link_desc); i++)
+ if (link_desc[i].state == state)
+ return link_desc[i].desc;
- return unknown_ae;
+ return "";
}
/**
@@ -2547,11 +2572,12 @@ static const char *ibmvfc_get_ae_desc(u64 ae)
static void ibmvfc_handle_async(struct ibmvfc_async_crq *crq,
struct ibmvfc_host *vhost)
{
- const char *desc = ibmvfc_get_ae_desc(crq->event);
+ const struct ibmvfc_async_desc *desc = ibmvfc_get_ae_desc(crq->event);
struct ibmvfc_target *tgt;
- ibmvfc_log(vhost, 3, "%s event received. scsi_id: %llx, wwpn: %llx,"
- " node_name: %llx\n", desc, crq->scsi_id, crq->wwpn, crq->node_name);
+ ibmvfc_log(vhost, desc->log_level, "%s event received. scsi_id: %llx, wwpn: %llx,"
+ " node_name: %llx%s\n", desc->desc, crq->scsi_id, crq->wwpn, crq->node_name,
+ ibmvfc_get_link_state(crq->link_state));
switch (crq->event) {
case IBMVFC_AE_RESUME:
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
index 608af39..ef663e7 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.h
+++ b/drivers/scsi/ibmvscsi/ibmvfc.h
@@ -541,6 +541,12 @@ enum ibmvfc_async_event {
IBMVFC_AE_ADAPTER_FAILED = 0x1000,
};
+struct ibmvfc_async_desc {
+ enum ibmvfc_async_event ae;
+ const char *desc;
+ int log_level;
+};
+
struct ibmvfc_crq {
volatile u8 valid;
volatile u8 format;