nfp: add support for multicast filter

Rewrite nfp_net_set_rx_mode() to implement interface to delivery
mc address and operations to firmware by using general mailbox
for filtering multicast packets.

The operations include add mc address and delete mc address.
And the limitation of mc addresses number is 1024 for each net
device.

User triggers adding mc address by using command below:
ip maddress add <mc address> dev <interface name>

User triggers deleting mc address by using command below:
ip maddress del <mc address> dev <interface name>

Signed-off-by: Diana Wang <na.wang@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net.h b/drivers/net/ethernet/netronome/nfp/nfp_net.h
index 6c83e47d8b3d..da33f09facb9 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net.h
@@ -88,6 +88,9 @@
 #define NFP_NET_FL_BATCH	16	/* Add freelist in this Batch size */
 #define NFP_NET_XDP_MAX_COMPLETE 2048	/* XDP bufs to reclaim in NAPI poll */
 
+/* MC definitions */
+#define NFP_NET_CFG_MAC_MC_MAX	1024	/* The maximum number of MC address per port*/
+
 /* Offload definitions */
 #define NFP_NET_N_VXLAN_PORTS	(NFP_NET_CFG_VXLAN_SZ / sizeof(__be16))
 
@@ -476,6 +479,7 @@ struct nfp_stat_pair {
  * @rx_dma_off:		Offset at which DMA packets (for XDP headroom)
  * @rx_offset:		Offset in the RX buffers where packet data starts
  * @ctrl:		Local copy of the control register/word.
+ * @ctrl_w1:		Local copy of the control register/word1.
  * @fl_bufsz:		Currently configured size of the freelist buffers
  * @xdp_prog:		Installed XDP program
  * @tx_rings:		Array of pre-allocated TX ring structures
@@ -508,6 +512,7 @@ struct nfp_net_dp {
 	u32 rx_dma_off;
 
 	u32 ctrl;
+	u32 ctrl_w1;
 	u32 fl_bufsz;
 
 	struct bpf_prog *xdp_prog;