net/bnxt: get maximum supported multicast filters count

[ upstream commit bc9b2c2 ]

The HWRM_FUNC_QCAPS response indicates the maximum number
of multicast filters that can be supported by this function
on the RX side.

Fixed to use this value instead of the hard coded value 16.

Fixes: d69851d ("net/bnxt: support multicast filter and set MAC addr")

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

drivers/net/bnxt/bnxt.h

@@ -889,10 +889,11 @@ struct bnxt {
 	struct bnxt_ring_stats	*prev_rx_ring_stats;
 	struct bnxt_ring_stats	*prev_tx_ring_stats;
 
-#define BNXT_MAX_MC_ADDRS	16
+#define BNXT_MAX_MC_ADDRS	((bp)->max_mcast_addr)
 	struct rte_ether_addr	*mcast_addr_list;
 	rte_iova_t		mc_list_dma_addr;
 	uint32_t		nb_mc_addr;
+	uint32_t		max_mcast_addr; /* maximum number of mcast filters supported */
 
 	struct rte_eth_rss_conf	rss_conf; /* RSS configuration. */
 };

drivers/net/bnxt/bnxt_hwrm.c

@@ -914,6 +914,8 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
 	PMD_DRV_LOG(DEBUG, "Max l2_cntxts is %d vnics is %d\n",
 		    bp->max_l2_ctx, bp->max_vnics);
 	bp->max_stat_ctx = rte_le_to_cpu_16(resp->max_stat_ctx);
+	bp->max_mcast_addr = rte_le_to_cpu_32(resp->max_mcast_filters);
+
 	if (BNXT_PF(bp)) {
 		bp->pf->total_vnics = rte_le_to_cpu_16(resp->max_vnics);
 		if (flags & HWRM_FUNC_QCAPS_OUTPUT_FLAGS_PTP_SUPPORTED) {