[dpdk-dev] [PATCH 22/30] net/sfc: move Rx/Tx datapath names to shared state

[Andrew Rybchenko <arybchenko@solarflare.com>]

Prepare to make sfc_adapter primary process private data.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 drivers/net/sfc/sfc.h        | 21 +++++++++----------
 drivers/net/sfc/sfc_ethdev.c | 39 +++++++++++++++++++-----------------
 2 files changed, 31 insertions(+), 29 deletions(-)

diff --git a/drivers/net/sfc/sfc.h b/drivers/net/sfc/sfc.h
index 766336f8c..890a04d0e 100644
--- a/drivers/net/sfc/sfc.h
+++ b/drivers/net/sfc/sfc.h
@@ -178,6 +178,9 @@ struct sfc_rss {
 struct sfc_adapter_shared {
 	struct rte_pci_addr		pci_addr;
 	uint16_t			port_id;
+
+	char				*dp_rx_name;
+	char				*dp_tx_name;
 };
 
 /* Adapter process private data */
@@ -281,19 +284,15 @@ struct sfc_adapter {
 	uint32_t			rxd_wait_timeout_ns;
 
 	struct sfc_rss			rss;
+};
 
-	/*
-	 * Shared memory copy of the Rx datapath name to be used by
-	 * the secondary process to find Rx datapath to be used.
-	 */
-	char				*dp_rx_name;
+static inline struct sfc_adapter_shared *
+sfc_adapter_shared_by_eth_dev(struct rte_eth_dev *eth_dev)
+{
+	struct sfc_adapter *sa = eth_dev->data->dev_private;
 
-	/*
-	 * Shared memory copy of the Tx datapath name to be used by
-	 * the secondary process to find Tx datapath to be used.
-	 */
-	char				*dp_tx_name;
-};
+	return sa->priv.shared;
+}
 
 /*
  * Add wrapper functions to acquire/release lock to be able to remove or
diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index 88dbecd46..9f0036375 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -1768,6 +1768,7 @@ static int
 sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
 {
 	struct sfc_adapter *sa = dev->data->dev_private;
+	struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
 	const struct sfc_dp_rx *dp_rx;
 	const struct sfc_dp_tx *dp_tx;
 	const efx_nic_cfg_t *encp;
@@ -1819,13 +1820,13 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
 		}
 	}
 
-	sa->dp_rx_name = sfc_strdup(dp_rx->dp.name);
-	if (sa->dp_rx_name == NULL) {
+	sas->dp_rx_name = sfc_strdup(dp_rx->dp.name);
+	if (sas->dp_rx_name == NULL) {
 		rc = ENOMEM;
 		goto fail_dp_rx_name;
 	}
 
-	sfc_notice(sa, "use %s Rx datapath", sa->dp_rx_name);
+	sfc_notice(sa, "use %s Rx datapath", sas->dp_rx_name);
 
 	rc = sfc_kvargs_process(sa, SFC_KVARG_TX_DATAPATH,
 				sfc_kvarg_string_handler, &tx_name);
@@ -1856,13 +1857,13 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
 		}
 	}
 
-	sa->dp_tx_name = sfc_strdup(dp_tx->dp.name);
-	if (sa->dp_tx_name == NULL) {
+	sas->dp_tx_name = sfc_strdup(dp_tx->dp.name);
+	if (sas->dp_tx_name == NULL) {
 		rc = ENOMEM;
 		goto fail_dp_tx_name;
 	}
 
-	sfc_notice(sa, "use %s Tx datapath", sa->dp_tx_name);
+	sfc_notice(sa, "use %s Tx datapath", sas->dp_tx_name);
 
 	sa->priv.dp_rx = dp_rx;
 	sa->priv.dp_tx = dp_tx;
@@ -1878,8 +1879,8 @@ sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
 fail_dp_tx_caps:
 fail_dp_tx:
 fail_kvarg_tx_datapath:
-	rte_free(sa->dp_rx_name);
-	sa->dp_rx_name = NULL;
+	rte_free(sas->dp_rx_name);
+	sas->dp_rx_name = NULL;
 
 fail_dp_rx_name:
 fail_dp_rx_caps:
@@ -1892,17 +1893,18 @@ static void
 sfc_eth_dev_clear_ops(struct rte_eth_dev *dev)
 {
 	struct sfc_adapter *sa = dev->data->dev_private;
+	struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
 
 	dev->dev_ops = NULL;
 	dev->rx_pkt_burst = NULL;
 	dev->tx_pkt_burst = NULL;
 
-	rte_free(sa->dp_tx_name);
-	sa->dp_tx_name = NULL;
+	rte_free(sas->dp_tx_name);
+	sas->dp_tx_name = NULL;
 	sa->priv.dp_tx = NULL;
 
-	rte_free(sa->dp_rx_name);
-	sa->dp_rx_name = NULL;
+	rte_free(sas->dp_rx_name);
+	sas->dp_rx_name = NULL;
 	sa->priv.dp_rx = NULL;
 }
 
@@ -1926,6 +1928,7 @@ sfc_eth_dev_secondary_init(struct rte_eth_dev *dev, uint32_t logtype_main)
 	 * in shared memory only.
 	 */
 	struct sfc_adapter *sa = dev->data->dev_private;
+	struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
 	struct sfc_adapter_priv *sap;
 	const struct sfc_dp_rx *dp_rx;
 	const struct sfc_dp_tx *dp_tx;
@@ -1943,32 +1946,32 @@ sfc_eth_dev_secondary_init(struct rte_eth_dev *dev, uint32_t logtype_main)
 
 	sap->logtype_main = logtype_main;
 
-	dp_rx = sfc_dp_find_rx_by_name(&sfc_dp_head, sa->dp_rx_name);
+	dp_rx = sfc_dp_find_rx_by_name(&sfc_dp_head, sas->dp_rx_name);
 	if (dp_rx == NULL) {
 		SFC_LOG(sa, RTE_LOG_ERR, logtype_main,
-			"cannot find %s Rx datapath", sa->dp_rx_name);
+			"cannot find %s Rx datapath", sas->dp_rx_name);
 		rc = ENOENT;
 		goto fail_dp_rx;
 	}
 	if (~dp_rx->features & SFC_DP_RX_FEAT_MULTI_PROCESS) {
 		SFC_LOG(sa, RTE_LOG_ERR, logtype_main,
 			"%s Rx datapath does not support multi-process",
-			sa->dp_rx_name);
+			sas->dp_rx_name);
 		rc = EINVAL;
 		goto fail_dp_rx_multi_process;
 	}
 
-	dp_tx = sfc_dp_find_tx_by_name(&sfc_dp_head, sa->dp_tx_name);
+	dp_tx = sfc_dp_find_tx_by_name(&sfc_dp_head, sas->dp_tx_name);
 	if (dp_tx == NULL) {
 		SFC_LOG(sa, RTE_LOG_ERR, logtype_main,
-			"cannot find %s Tx datapath", sa->dp_tx_name);
+			"cannot find %s Tx datapath", sas->dp_tx_name);
 		rc = ENOENT;
 		goto fail_dp_tx;
 	}
 	if (~dp_tx->features & SFC_DP_TX_FEAT_MULTI_PROCESS) {
 		SFC_LOG(sa, RTE_LOG_ERR, logtype_main,
 			"%s Tx datapath does not support multi-process",
-			sa->dp_tx_name);
+			sas->dp_tx_name);
 		rc = EINVAL;
 		goto fail_dp_tx_multi_process;
 	}
-- 
2.17.1