net/mlx4_core: Add retrieval of CONFIG_DEV parameters

Add code to issue CONFIG_DEV "get" firmware command.

This command is used in order to obtain certain parameters used for
supporting various RX checksumming options and vxlan UDP port.

The GET operation is allowed for VFs too.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Shani Michaeli <shanim@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 31 insertions, 1 deletions

diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index ff5f5deb3dcf..64d25941b329 100644
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -199,6 +199,33 @@ enum {
         MLX4_CMD_NATIVE
 };
 
+/*
+ * MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP -
+ * Receive checksum value is reported in CQE also for non TCP/UDP packets.
+ *
+ * MLX4_RX_CSUM_MODE_L4 -
+ * L4_CSUM bit in CQE, which indicates whether or not L4 checksum
+ * was validated correctly, is supported.
+ *
+ * MLX4_RX_CSUM_MODE_IP_OK_IP_NON_TCP_UDP -
+ * IP_OK CQE's field is supported also for non TCP/UDP IP packets.
+ *
+ * MLX4_RX_CSUM_MODE_MULTI_VLAN -
+ * Receive Checksum offload is supported for packets with more than 2 vlan headers.
+ */
+enum mlx4_rx_csum_mode {
+        MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP               = 1UL << 0,
+        MLX4_RX_CSUM_MODE_L4                            = 1UL << 1,
+        MLX4_RX_CSUM_MODE_IP_OK_IP_NON_TCP_UDP          = 1UL << 2,
+        MLX4_RX_CSUM_MODE_MULTI_VLAN                    = 1UL << 3
+};
+
+struct mlx4_config_dev_params {
+        u16     vxlan_udp_dport;
+        u8      rx_csum_flags_port_1;
+        u8      rx_csum_flags_port_2;
+};
+
 struct mlx4_dev;
 
 struct mlx4_cmd_mailbox {
@@ -250,6 +277,8 @@ int mlx4_set_vf_vlan(struct mlx4_dev *dev, int port, int vf, u16 vlan, u8 qos);
 int mlx4_set_vf_spoofchk(struct mlx4_dev *dev, int port, int vf, bool setting);
 int mlx4_get_vf_config(struct mlx4_dev *dev, int port, int vf, struct ifla_vf_info *ivf);
 int mlx4_set_vf_link_state(struct mlx4_dev *dev, int port, int vf, int link_state);
+int mlx4_config_dev_retrieval(struct mlx4_dev *dev,
+                              struct mlx4_config_dev_params *params);
 /*
  * mlx4_get_slave_default_vlan -
  * return true if VST ( default vlan)
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index e4c136ebe79b..5cc5eac47d1b 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -188,7 +188,8 @@ enum {
         MLX4_DEV_CAP_FLAG2_CQE_STRIDE           = 1LL <<  12,
         MLX4_DEV_CAP_FLAG2_EQE_STRIDE           = 1LL <<  13,
         MLX4_DEV_CAP_FLAG2_ETH_PROT_CTRL        = 1LL <<  14,
-        MLX4_DEV_CAP_FLAG2_ETH_BACKPL_AN_REP    = 1LL <<  15
+        MLX4_DEV_CAP_FLAG2_ETH_BACKPL_AN_REP    = 1LL <<  15,
+        MLX4_DEV_CAP_FLAG2_CONFIG_DEV           = 1LL <<  16
 };
 
 enum {