From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Date: Fri, 15 May 2020 05:04:36 +0000 (-0700)
Subject: net/bnxt: fix storing MAC address twice
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=86421846cc20e963e5b6878724727abd427cd1b6;p=dpdk.git

net/bnxt: fix storing MAC address twice

We are maintaining MAC address twice which is unnecessary.
This patch removes the copy which helps reduce size of bnxt structure.

Fixes: b7778e8a1c00 ("net/bnxt: refactor to properly allocate resources for PF/VF")
Cc: stable@dpdk.org

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---

diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index 4093a2f01e..403b23f356 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -560,6 +560,7 @@ struct bnxt {
 #define BNXT_FLAG_FC_THREAD			BIT(23)
 #define BNXT_FLAG_RX_VECTOR_PKT_MODE		BIT(24)
 #define BNXT_FLAG_FLOW_XSTATS_EN		BIT(25)
+#define BNXT_FLAG_DFLT_MAC_SET			BIT(26)
 #define BNXT_PF(bp)		(!((bp)->flags & BNXT_FLAG_VF))
 #define BNXT_VF(bp)		((bp)->flags & BNXT_FLAG_VF)
 #define BNXT_NPAR(bp)		((bp)->flags & BNXT_FLAG_NPAR_PF)
@@ -573,6 +574,7 @@ struct bnxt {
 #define BNXT_HAS_NQ(bp)		BNXT_CHIP_THOR(bp)
 #define BNXT_HAS_RING_GRPS(bp)	(!BNXT_CHIP_THOR(bp))
 #define BNXT_FLOW_XSTATS_EN(bp)	((bp)->flags & BNXT_FLAG_FLOW_XSTATS_EN)
+#define BNXT_HAS_DFLT_MAC_SET(bp)      ((bp)->flags & BNXT_FLAG_DFLT_MAC_SET)
 
 	uint32_t		fw_cap;
 #define BNXT_FW_CAP_HOT_RESET		BIT(0)
@@ -658,7 +660,6 @@ struct bnxt {
 	uint8_t                 max_q;
 
 	uint16_t		fw_fid;
-	uint8_t			dflt_mac_addr[RTE_ETHER_ADDR_LEN];
 	uint16_t		max_rsscos_ctx;
 	uint16_t		max_cp_rings;
 	uint16_t		max_tx_rings;
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 4d64a98351..77492f89c7 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -4980,7 +4980,7 @@ static int bnxt_setup_mac_addr(struct rte_eth_dev *eth_dev)
 		return -ENOMEM;
 	}
 
-	if (bnxt_check_zero_bytes(bp->dflt_mac_addr, RTE_ETHER_ADDR_LEN)) {
+	if (!BNXT_HAS_DFLT_MAC_SET(bp)) {
 		if (BNXT_PF(bp))
 			return -EINVAL;
 
@@ -4993,14 +4993,11 @@ static int bnxt_setup_mac_addr(struct rte_eth_dev *eth_dev)
 			    bp->mac_addr[3], bp->mac_addr[4], bp->mac_addr[5]);
 
 		rc = bnxt_hwrm_set_mac(bp);
-		if (!rc)
-			memcpy(&bp->eth_dev->data->mac_addrs[0], bp->mac_addr,
-			       RTE_ETHER_ADDR_LEN);
-		return rc;
+		if (rc)
+			return rc;
 	}
 
 	/* Copy the permanent MAC from the FUNC_QCAPS response */
-	memcpy(bp->mac_addr, bp->dflt_mac_addr, RTE_ETHER_ADDR_LEN);
 	memcpy(&eth_dev->data->mac_addrs[0], bp->mac_addr, RTE_ETHER_ADDR_LEN);
 
 	return rc;
@@ -5011,7 +5008,7 @@ static int bnxt_restore_dflt_mac(struct bnxt *bp)
 	int rc = 0;
 
 	/* MAC is already configured in FW */
-	if (!bnxt_check_zero_bytes(bp->dflt_mac_addr, RTE_ETHER_ADDR_LEN))
+	if (BNXT_HAS_DFLT_MAC_SET(bp))
 		return 0;
 
 	/* Restore the old MAC configured */
diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index a41d77669b..c1798b59d1 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -731,7 +731,12 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
 	}
 
 	bp->fw_fid = rte_le_to_cpu_32(resp->fid);
-	memcpy(bp->dflt_mac_addr, &resp->mac_address, RTE_ETHER_ADDR_LEN);
+	if (!bnxt_check_zero_bytes(resp->mac_address, RTE_ETHER_ADDR_LEN)) {
+		bp->flags |= BNXT_FLAG_DFLT_MAC_SET;
+		memcpy(bp->mac_addr, &resp->mac_address, RTE_ETHER_ADDR_LEN);
+	} else {
+		bp->flags &= ~BNXT_FLAG_DFLT_MAC_SET;
+	}
 	bp->max_rsscos_ctx = rte_le_to_cpu_16(resp->max_rsscos_ctx);
 	bp->max_cp_rings = rte_le_to_cpu_16(resp->max_cmpl_rings);
 	bp->max_tx_rings = rte_le_to_cpu_16(resp->max_tx_rings);
@@ -5027,7 +5032,6 @@ int bnxt_hwrm_set_mac(struct bnxt *bp)
 
 	HWRM_CHECK_RESULT();
 
-	memcpy(bp->dflt_mac_addr, bp->mac_addr, RTE_ETHER_ADDR_LEN);
 	HWRM_UNLOCK();
 
 	return rc;