[dpdk-dev] [PATCH 21/30] net/sfc: start to factor out multi-process shared data

[Andrew Rybchenko <arybchenko@solarflare.com>]

sfc_adapter structure will become primary process only private data.
Start to factor out shared data into dedicated structure which will
become separate structure finally.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 drivers/net/sfc/sfc.h        | 15 +++++++++++++--
 drivers/net/sfc/sfc_debug.h  |  9 +++++----
 drivers/net/sfc/sfc_ethdev.c |  8 ++++++--
 drivers/net/sfc/sfc_log.h    | 13 +++++++------
 drivers/net/sfc/sfc_mcdi.c   |  2 +-
 5 files changed, 32 insertions(+), 15 deletions(-)

diff --git a/drivers/net/sfc/sfc.h b/drivers/net/sfc/sfc.h
index 7e95170bc..766336f8c 100644
--- a/drivers/net/sfc/sfc.h
+++ b/drivers/net/sfc/sfc.h
@@ -174,8 +174,15 @@ struct sfc_rss {
 	uint8_t				key[EFX_RSS_KEY_SIZE];
 };
 
+/* Adapter private data shared by primary and secondary processes */
+struct sfc_adapter_shared {
+	struct rte_pci_addr		pci_addr;
+	uint16_t			port_id;
+};
+
 /* Adapter process private data */
 struct sfc_adapter_priv {
+	struct sfc_adapter_shared	*shared;
 	const struct sfc_dp_rx		*dp_rx;
 	const struct sfc_dp_tx		*dp_tx;
 	uint32_t			logtype_main;
@@ -199,6 +206,12 @@ struct sfc_adapter {
 	 */
 	struct sfc_adapter_priv		priv;
 
+	/*
+	 * Temporary placeholder for multi-process shared data for
+	 * transition.
+	 */
+	struct sfc_adapter_shared	_shared;
+
 	/*
 	 * PMD setup and configuration is not thread safe. Since it is not
 	 * performance sensitive, it is better to guarantee thread-safety
@@ -207,8 +220,6 @@ struct sfc_adapter {
 	 */
 	rte_spinlock_t			lock;
 	enum sfc_adapter_state		state;
-	struct rte_pci_addr		pci_addr;
-	uint16_t			port_id;
 	struct rte_eth_dev		*eth_dev;
 	struct rte_kvargs		*kvargs;
 	int				socket_id;
diff --git a/drivers/net/sfc/sfc_debug.h b/drivers/net/sfc/sfc_debug.h
index 62f3937e8..ea1b43295 100644
--- a/drivers/net/sfc/sfc_debug.h
+++ b/drivers/net/sfc/sfc_debug.h
@@ -25,13 +25,14 @@
 /* Log PMD message, automatically add prefix and \n */
 #define sfc_panic(sa, fmt, args...) \
 	do {								\
-		const struct sfc_adapter *_sa = (sa);			\
+		const struct sfc_adapter_shared *_sas;			\
 									\
+		_sas = (sa)->priv.shared;				\
 		rte_panic("sfc " PCI_PRI_FMT				\
 			  " #%" PRIu16 ": " fmt "\n",			\
-			  _sa->pci_addr.domain, _sa->pci_addr.bus,	\
-			  _sa->pci_addr.devid, _sa->pci_addr.function,	\
-			  _sa->port_id, ##args);			\
+			  _sas->pci_addr.domain, _sas->pci_addr.bus,	\
+			  _sas->pci_addr.devid, _sas->pci_addr.function,\
+			  _sas->port_id, ##args);			\
 	} while (0)
 
 #endif /* _SFC_DEBUG_H_ */
diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index aa857ec74..88dbecd46 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -2023,6 +2023,7 @@ static int
 sfc_eth_dev_init(struct rte_eth_dev *dev)
 {
 	struct sfc_adapter *sa = dev->data->dev_private;
+	struct sfc_adapter_shared *sas;
 	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 	uint32_t logtype_main;
 	int rc;
@@ -2035,6 +2036,9 @@ sfc_eth_dev_init(struct rte_eth_dev *dev)
 					    SFC_LOGTYPE_MAIN_STR,
 					    RTE_LOG_NOTICE);
 
+	sa->priv.shared = &sa->_shared;
+	sas = sa->priv.shared;
+
 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 		return -sfc_eth_dev_secondary_init(dev, logtype_main);
 
@@ -2047,8 +2051,8 @@ sfc_eth_dev_init(struct rte_eth_dev *dev)
 	dev->process_private = sa;
 
 	/* Required for logging */
-	sa->pci_addr = pci_dev->addr;
-	sa->port_id = dev->data->port_id;
+	sas->pci_addr = pci_dev->addr;
+	sas->port_id = dev->data->port_id;
 	sa->priv.logtype_main = logtype_main;
 
 	sa->eth_dev = dev;
diff --git a/drivers/net/sfc/sfc_log.h b/drivers/net/sfc/sfc_log.h
index 405cc2a26..97de9ae53 100644
--- a/drivers/net/sfc/sfc_log.h
+++ b/drivers/net/sfc/sfc_log.h
@@ -34,17 +34,18 @@ extern uint32_t sfc_logtype_driver;
 /* Log PMD message, automatically add prefix and \n */
 #define SFC_LOG(sa, level, type, ...) \
 	do {								\
-		const struct sfc_adapter *__sa = (sa);			\
+		const struct sfc_adapter_shared *_sas;			\
 									\
+		_sas = (sa)->priv.shared;				\
 		rte_log(level, type,					\
 			RTE_FMT("PMD: sfc_efx "				\
 				PCI_PRI_FMT " #%" PRIu16		\
 				": " RTE_FMT_HEAD(__VA_ARGS__ ,) "\n",	\
-				__sa->pci_addr.domain,			\
-				__sa->pci_addr.bus,			\
-				__sa->pci_addr.devid,			\
-				__sa->pci_addr.function,		\
-				__sa->port_id,				\
+				_sas->pci_addr.domain,			\
+				_sas->pci_addr.bus,			\
+				_sas->pci_addr.devid,			\
+				_sas->pci_addr.function,		\
+				_sas->port_id,				\
 				RTE_FMT_TAIL(__VA_ARGS__,)));		\
 	} while (0)
 
diff --git a/drivers/net/sfc/sfc_mcdi.c b/drivers/net/sfc/sfc_mcdi.c
index e485e07d6..dede33688 100644
--- a/drivers/net/sfc/sfc_mcdi.c
+++ b/drivers/net/sfc/sfc_mcdi.c
@@ -256,7 +256,7 @@ sfc_mcdi_init(struct sfc_adapter *sa)
 	if (rc != 0)
 		goto fail_dma_alloc;
 
-	mcdi->logtype = sfc_register_logtype(&sa->pci_addr,
+	mcdi->logtype = sfc_register_logtype(&sa->priv.shared->pci_addr,
 					     SFC_LOGTYPE_MCDI_STR,
 					     RTE_LOG_NOTICE);
 
-- 
2.17.1