[PATCH 4/5] net/bnxt: check if MAC address is all zeros

[Ajit Khaparde <ajit.khaparde@broadcom.com>]

In certain cases the MAC address of a port could be all zeros.
Catch it early, log a message and fail the initiaization.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/bnxt_ethdev.c | 10 ++++++++++
 drivers/net/bnxt/bnxt_filter.c |  2 +-
 drivers/net/bnxt/bnxt_filter.h |  1 +
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index af4673dc2..ebc2dfab2 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -3247,6 +3247,16 @@ bnxt_dev_init(struct rte_eth_dev *eth_dev)
 		rc = -ENOMEM;
 		goto error_free;
 	}
+
+	if (check_zero_bytes(bp->dflt_mac_addr, ETHER_ADDR_LEN)) {
+		PMD_DRV_LOG(ERR,
+			    "Invalid MAC addr %02X:%02X:%02X:%02X:%02X:%02X\n",
+			    bp->dflt_mac_addr[0], bp->dflt_mac_addr[1],
+			    bp->dflt_mac_addr[2], bp->dflt_mac_addr[3],
+			    bp->dflt_mac_addr[4], bp->dflt_mac_addr[5]);
+		rc = -EINVAL;
+		goto error_free;
+	}
 	/* Copy the permanent MAC from the qcap response address now. */
 	memcpy(bp->mac_addr, bp->dflt_mac_addr, sizeof(bp->mac_addr));
 	memcpy(&eth_dev->data->mac_addrs[0], bp->mac_addr, ETHER_ADDR_LEN);
diff --git a/drivers/net/bnxt/bnxt_filter.c b/drivers/net/bnxt/bnxt_filter.c
index 0716dd8fd..032e8eed0 100644
--- a/drivers/net/bnxt/bnxt_filter.c
+++ b/drivers/net/bnxt/bnxt_filter.c
@@ -250,7 +250,7 @@ nxt_non_void_action(const struct rte_flow_action *cur)
 	}
 }
 
-static inline int check_zero_bytes(const uint8_t *bytes, int len)
+int check_zero_bytes(const uint8_t *bytes, int len)
 {
 	int i;
 	for (i = 0; i < len; i++)
diff --git a/drivers/net/bnxt/bnxt_filter.h b/drivers/net/bnxt/bnxt_filter.h
index 2591a87e2..a3c702df6 100644
--- a/drivers/net/bnxt/bnxt_filter.h
+++ b/drivers/net/bnxt/bnxt_filter.h
@@ -97,6 +97,7 @@ struct bnxt_filter_info *bnxt_get_unused_filter(struct bnxt *bp);
 void bnxt_free_filter(struct bnxt *bp, struct bnxt_filter_info *filter);
 struct bnxt_filter_info *bnxt_get_l2_filter(struct bnxt *bp,
 		struct bnxt_filter_info *nf, struct bnxt_vnic_info *vnic);
+int check_zero_bytes(const uint8_t *bytes, int len);
 
 #define NTUPLE_FLTR_ALLOC_INPUT_EN_SRC_MACADDR	\
 	HWRM_CFA_NTUPLE_FILTER_ALLOC_INPUT_ENABLES_SRC_MACADDR
-- 
2.14.3 (Apple Git-98)