[dpdk-dev] [PATCH] nfp: write mac address to configuration bar

[Alejandro Lucero <alejandro.lucero@netronome.com>]

If not a valid mac present in configuration bar, PMD creates a random
one. It needs to be passed to the NIC.

Signed-off-by: Alejandro Lucero <alejandro.lucero@netronome.com>
---
 drivers/net/nfp/nfp_net.c     | 18 +++++++++++++++++-
 drivers/net/nfp/nfp_net_pmd.h |  5 +++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 679a91b..1db7a66 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -603,6 +603,20 @@ static void nfp_net_read_mac(struct nfp_net_hw *hw)
 	memcpy(&hw->mac_addr[4], &tmp, 2);
 }
 
+static void
+nfp_net_write_mac(struct nfp_net_hw *hw, uint8_t *mac)
+{
+	uint32_t mac0 = *(uint32_t *)mac;
+	uint16_t mac1;
+
+	nn_writel(rte_cpu_to_be_32(mac0), hw->ctrl_bar + NFP_NET_CFG_MACADDR);
+
+	mac += 4;
+	mac1 = *(uint16_t *)mac;
+	nn_writew(rte_cpu_to_be_16(mac1),
+		  hw->ctrl_bar + NFP_NET_CFG_MACADDR + 6);
+}
+
 static int
 nfp_configure_rx_interrupt(struct rte_eth_dev *dev,
 			   struct rte_intr_handle *intr_handle)
@@ -2546,9 +2560,11 @@ uint32_t nfp_net_txq_full(struct nfp_net_txq *txq)
 
 	nfp_net_read_mac(hw);
 
-	if (!is_valid_assigned_ether_addr((struct ether_addr *)&hw->mac_addr))
+	if (!is_valid_assigned_ether_addr((struct ether_addr *)&hw->mac_addr)) {
 		/* Using random mac addresses for VFs */
 		eth_random_addr(&hw->mac_addr[0]);
+		nfp_net_write_mac(hw, (uint8_t *)&hw->mac_addr);
+	}
 
 	/* Copying mac address to DPDK eth_dev struct */
 	ether_addr_copy((struct ether_addr *)hw->mac_addr,
diff --git a/drivers/net/nfp/nfp_net_pmd.h b/drivers/net/nfp/nfp_net_pmd.h
index eec56bc..c6bddaa 100644
--- a/drivers/net/nfp/nfp_net_pmd.h
+++ b/drivers/net/nfp/nfp_net_pmd.h
@@ -143,6 +143,11 @@ static inline void nn_writel(uint32_t val, volatile void *addr)
 	rte_write32(val, addr);
 }
 
+static inline void nn_writew(uint16_t val, volatile void *addr)
+{
+	rte_write16(val, addr);
+}
+
 static inline uint64_t nn_readq(volatile void *addr)
 {
 	const volatile uint32_t *p = addr;
-- 
1.9.1