[dpdk-dev] [PATCH 6/6] net/sfc: add dynamic log level for MCDI messages
Andrew Rybchenko
arybchenko at solarflare.com
Thu Jan 25 18:00:47 CET 2018
From: Ivan Malov <ivan.malov at oktetlabs.ru>
Signed-off-by: Ivan Malov <ivan.malov at oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
Reviewed-by: Andy Moreton <amoreton at solarflare.com>
---
doc/guides/nics/sfc_efx.rst | 12 ++++++------
drivers/net/sfc/sfc.h | 2 +-
drivers/net/sfc/sfc_ethdev.c | 3 +--
drivers/net/sfc/sfc_kvargs.c | 1 -
drivers/net/sfc/sfc_kvargs.h | 2 --
drivers/net/sfc/sfc_log.h | 15 +++++++++++++++
drivers/net/sfc/sfc_mcdi.c | 25 +++++++++++++------------
7 files changed, 36 insertions(+), 24 deletions(-)
diff --git a/doc/guides/nics/sfc_efx.rst b/doc/guides/nics/sfc_efx.rst
index 0d02f96..fcda569 100644
--- a/doc/guides/nics/sfc_efx.rst
+++ b/doc/guides/nics/sfc_efx.rst
@@ -287,12 +287,6 @@ boolean parameters value.
**auto** allows NIC firmware to make a choice based on
installed licences and firmware variant configured using **sfboot**.
-- ``mcdi_logging`` [bool] (default **n**)
-
- Enable extra logging of the communication with the NIC's management CPU.
- The logging is done using RTE_LOG() with INFO level and PMD type.
- The format is consumed by the Solarflare netlogdecode cross-platform tool.
-
- ``stats_update_period_ms`` [long] (default **1000**)
Adjust period in milliseconds to update port hardware statistics.
@@ -326,3 +320,9 @@ SFC EFX PMD provides the following log types available for control:
Matches a subset of per-port log types registered during runtime.
A full name for a particular type may be obtained by appending a
dot and a PCI device identifier (``XXXX:XX:XX.X``) to the prefix.
+
+- ``pmd.net.sfc.mcdi`` (default level is **6** - ``RTE_LOG_NOTICE``)
+
+ Extra logging of the communication with the NIC's management CPU.
+ The format of the log is consumed by the Solarflare netlogdecode
+ cross-platform tool. May be managed per-port, as explained above.
diff --git a/drivers/net/sfc/sfc.h b/drivers/net/sfc/sfc.h
index 378c675..65a4df2 100644
--- a/drivers/net/sfc/sfc.h
+++ b/drivers/net/sfc/sfc.h
@@ -104,7 +104,7 @@ struct sfc_mcdi {
efsys_mem_t mem;
enum sfc_mcdi_state state;
efx_mcdi_transport_t transport;
- bool logging;
+ uint32_t logtype;
uint32_t proxy_handle;
efx_rc_t proxy_result;
};
diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index f418715..ffe1c45 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -2078,8 +2078,7 @@ RTE_PMD_REGISTER_PARAM_STRING(net_sfc_efx,
SFC_KVARG_RX_DATAPATH "=" SFC_KVARG_VALUES_RX_DATAPATH " "
SFC_KVARG_TX_DATAPATH "=" SFC_KVARG_VALUES_TX_DATAPATH " "
SFC_KVARG_PERF_PROFILE "=" SFC_KVARG_VALUES_PERF_PROFILE " "
- SFC_KVARG_STATS_UPDATE_PERIOD_MS "=<long> "
- SFC_KVARG_MCDI_LOGGING "=" SFC_KVARG_VALUES_BOOL);
+ SFC_KVARG_STATS_UPDATE_PERIOD_MS "=<long>");
RTE_INIT(sfc_driver_register_logtype);
static void
diff --git a/drivers/net/sfc/sfc_kvargs.c b/drivers/net/sfc/sfc_kvargs.c
index 860adeb..9c08bff 100644
--- a/drivers/net/sfc/sfc_kvargs.c
+++ b/drivers/net/sfc/sfc_kvargs.c
@@ -23,7 +23,6 @@ sfc_kvargs_parse(struct sfc_adapter *sa)
struct rte_devargs *devargs = eth_dev->device->devargs;
const char **params = (const char *[]){
SFC_KVARG_STATS_UPDATE_PERIOD_MS,
- SFC_KVARG_MCDI_LOGGING,
SFC_KVARG_PERF_PROFILE,
SFC_KVARG_RX_DATAPATH,
SFC_KVARG_TX_DATAPATH,
diff --git a/drivers/net/sfc/sfc_kvargs.h b/drivers/net/sfc/sfc_kvargs.h
index 2c7aaaf..a84dc6b 100644
--- a/drivers/net/sfc/sfc_kvargs.h
+++ b/drivers/net/sfc/sfc_kvargs.h
@@ -18,8 +18,6 @@ extern "C" {
#define SFC_KVARG_VALUES_BOOL "[1|y|yes|on|0|n|no|off]"
-#define SFC_KVARG_MCDI_LOGGING "mcdi_logging"
-
#define SFC_KVARG_PERF_PROFILE "perf_profile"
#define SFC_KVARG_PERF_PROFILE_AUTO "auto"
diff --git a/drivers/net/sfc/sfc_log.h b/drivers/net/sfc/sfc_log.h
index 6daab1c..d6f3435 100644
--- a/drivers/net/sfc/sfc_log.h
+++ b/drivers/net/sfc/sfc_log.h
@@ -25,6 +25,12 @@ extern uint32_t sfc_logtype_driver;
/** Name prefix for the per-device log type used to report basic information */
#define SFC_LOGTYPE_MAIN_STR SFC_LOGTYPE_PREFIX "main"
+/** Device MCDI log type name prefix */
+#define SFC_LOGTYPE_MCDI_STR SFC_LOGTYPE_PREFIX "mcdi"
+
+/** Level value used by MCDI log statements */
+#define SFC_LOG_LEVEL_MCDI RTE_LOG_INFO
+
/* Log PMD message, automatically add prefix and \n */
#define SFC_LOG(sa, level, type, ...) \
do { \
@@ -84,4 +90,13 @@ extern uint32_t sfc_logtype_driver;
RTE_FMT_TAIL(__VA_ARGS__ ,))); \
} while (0)
+#define sfc_log_mcdi(sa, ...) \
+ do { \
+ const struct sfc_adapter *_sa = (sa); \
+ \
+ SFC_LOG(_sa, SFC_LOG_LEVEL_MCDI, _sa->mcdi.logtype, \
+ __VA_ARGS__); \
+ } while (0)
+
+
#endif /* _SFC_LOG_H_ */
diff --git a/drivers/net/sfc/sfc_mcdi.c b/drivers/net/sfc/sfc_mcdi.c
index 895c2f5..007506b 100644
--- a/drivers/net/sfc/sfc_mcdi.c
+++ b/drivers/net/sfc/sfc_mcdi.c
@@ -15,7 +15,6 @@
#include "sfc.h"
#include "sfc_log.h"
-#include "sfc_kvargs.h"
#include "sfc_ev.h"
#define SFC_MCDI_POLL_INTERVAL_MIN_US 10 /* 10us in 1us units */
@@ -176,7 +175,7 @@ sfc_mcdi_do_log(const struct sfc_adapter *sa,
* at the end which is required by netlogdecode.
*/
buffer[position] = '\0';
- sfc_notice(sa, "%s \\", buffer);
+ sfc_log_mcdi(sa, "%s \\", buffer);
/* Preserve prefix for the next log message */
position = pfxsize;
}
@@ -198,10 +197,17 @@ sfc_mcdi_logger(void *arg, efx_log_msg_t type,
size_t pfxsize;
size_t start;
- if (!sa->mcdi.logging)
+ /*
+ * Unlike the other cases, MCDI logging implies more onerous work
+ * needed to produce a message. If the dynamic log level prevents
+ * the end result from being printed, the CPU time will be wasted.
+ *
+ * To avoid wasting time, the actual level is examined in advance.
+ */
+ if (rte_log_get_level(sa->mcdi.logtype) < (int)SFC_LOG_LEVEL_MCDI)
return;
- /* The format including prefix added by sfc_notice() is the format
+ /* The format including prefix added by sfc_log_mcdi() is the format
* consumed by the Solarflare netlogdecode tool.
*/
pfxsize = snprintf(buffer, sizeof(buffer), "MCDI RPC %s:",
@@ -212,7 +218,7 @@ sfc_mcdi_logger(void *arg, efx_log_msg_t type,
start = sfc_mcdi_do_log(sa, buffer, data, data_size, pfxsize, start);
if (start != pfxsize) {
buffer[start] = '\0';
- sfc_notice(sa, "%s", buffer);
+ sfc_log_mcdi(sa, "%s", buffer);
}
}
@@ -250,11 +256,8 @@ sfc_mcdi_init(struct sfc_adapter *sa)
if (rc != 0)
goto fail_dma_alloc;
- /* Convert negative error to positive used in the driver */
- rc = sfc_kvargs_process(sa, SFC_KVARG_MCDI_LOGGING,
- sfc_kvarg_bool_handler, &mcdi->logging);
- if (rc != 0)
- goto fail_kvargs_process;
+ mcdi->logtype = sfc_register_logtype(sa, SFC_LOGTYPE_MCDI_STR,
+ RTE_LOG_NOTICE);
emtp = &mcdi->transport;
emtp->emt_context = sa;
@@ -274,8 +277,6 @@ sfc_mcdi_init(struct sfc_adapter *sa)
fail_mcdi_init:
memset(emtp, 0, sizeof(*emtp));
-
-fail_kvargs_process:
sfc_dma_free(sa, &mcdi->mem);
fail_dma_alloc:
--
2.7.4
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