1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index bebe37e139c9..9e5009be8e98 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -471,3 +471,60 @@ bnxt_xdp_build_skb(struct bnxt *bp, struct sk_buff *skb, u8 num_frags,
 				  xdp_buff_get_skb_flags(xdp));
 	return skb;
 }
+
+int bnxt_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash,
+		     enum xdp_rss_hash_type *rss_type)
+{
+	const struct bnxt_xdp_buff *xdp = (void *)ctx;
+	const struct rx_cmp_ext *rxcmp1 = xdp->rxcmp1;
+	const struct rx_cmp *rxcmp = xdp->rxcmp;
+	enum xdp_rss_hash_type hash_type = 0;
+	u32 itypes;
+
+	if (!rxcmp || !RX_CMP_HASH_VALID(rxcmp))
+		return -ENODATA;
+
+	*hash = le32_to_cpu(rxcmp->rx_cmp_rss_hash);
+
+	if (!rxcmp1) {
+		*rss_type = XDP_RSS_TYPE_L2;
+		return 0;
+	}
+
+	if (xdp->cmp_type == CMP_TYPE_RX_L2_CMP) {
+		itypes = RX_CMP_ITYPES(rxcmp);
+		if (rxcmp1->rx_cmp_flags2 &
+		    cpu_to_le32(RX_CMP_FLAGS2_IP_TYPE)) {
+			hash_type |= XDP_RSS_TYPE_L3_IPV6;
+		} else {
+			hash_type |= XDP_RSS_TYPE_L3_IPV4;
+		}
+
+		switch (itypes) {
+		case RX_CMP_FLAGS_ITYPE_TCP:
+			hash_type |= XDP_RSS_L4 | XDP_RSS_L4_TCP;
+			break;
+		case RX_CMP_FLAGS_ITYPE_UDP:
+			hash_type |= XDP_RSS_L4 | XDP_RSS_L4_UDP;
+			break;
+		case RX_CMP_FLAGS_ITYPE_ICMP:
+			hash_type |= XDP_RSS_L4 | XDP_RSS_L4_ICMP;
+			break;
+		default:
+			break;
+		}
+	} else if (xdp->cmp_type == CMP_TYPE_RX_L2_V3_CMP) {
+		struct bnxt *bp = netdev_priv(xdp->xdp.rxq->dev);
+
+		if (rxcmp1->rx_cmp_flags2 & cpu_to_le32(RX_CMP_FLAGS2_IP_TYPE))
+			hash_type |= XDP_RSS_TYPE_L3_IPV6;
+		else
+			hash_type |= XDP_RSS_TYPE_L3_IPV4;
+
+		if (bnxt_rss_ext_op(bp, rxcmp) == PKT_HASH_TYPE_L4)
+			hash_type |= XDP_RSS_L4;
+	}
+
+	*rss_type = hash_type;
+	return 0;
+}