netxen: enable rss for NX2031

Enable multiple rx rings for older NX2031 chip, firmware 3.4.336
or newer supports this feature.

Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 4 deletions

diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 8426092deda3..da9b90da5207 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -175,7 +175,8 @@ netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
         struct nx_host_sds_ring *sds_ring;
         struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
 
-        if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
+        if ((adapter->flags & NETXEN_NIC_MSIX_ENABLED) &&
+                        adapter->rss_supported)
                 adapter->max_sds_rings = (num_online_cpus() >= 4) ? 4 : 2;
         else
                 adapter->max_sds_rings = 1;
@@ -288,10 +289,22 @@ static void netxen_check_options(struct netxen_adapter *adapter)
         else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
                 adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
 
-        if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
+        adapter->msix_supported = 0;
+        if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
                 adapter->msix_supported = !!use_msi_x;
-        else
-                adapter->msix_supported = 0;
+                adapter->rss_supported = !!use_msi_x;
+        } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
+                switch (adapter->ahw.board_type) {
+                case NETXEN_BRDTYPE_P2_SB31_10G:
+                case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
+                case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
+                        adapter->msix_supported = !!use_msi_x;
+                        adapter->rss_supported = !!use_msi_x;
+                        break;
+                default:
+                        break;
+                }
+        }
 
         adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
         adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;