mlx4: Add support for CONFIG_DEV command

Introduce the CONFIG_DEV firmware command which we will use to
configure the UDP port assumed by the firmware for the VXLAN offloads.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c
index 2fd61b6..78099ea 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
@@ -954,6 +954,15 @@ static struct mlx4_cmd_info cmd_info[] = {
                .verify = NULL,
                .wrapper = NULL
        },
+       {
+               .opcode = MLX4_CMD_CONFIG_DEV,
+               .has_inbox = false,
+               .has_outbox = false,
+               .out_is_imm = false,
+               .encode_slave_id = false,
+               .verify = NULL,
+               .wrapper = mlx4_CMD_EPERM_wrapper
+       },
        {
                .opcode = MLX4_CMD_ALLOC_RES,
                .has_inbox = false,

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 6bd33e2..d16a4d1 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -1779,6 +1779,46 @@ int mlx4_CLOSE_HCA(struct mlx4_dev *dev, int panic)
                        MLX4_CMD_NATIVE);
 }
 
+struct mlx4_config_dev {
+       __be32  update_flags;
+       __be32  rsdv1[3];
+       __be16  vxlan_udp_dport;
+       __be16  rsvd2;
+};
+
+#define MLX4_VXLAN_UDP_DPORT (1 << 0)
+
+static int mlx4_CONFIG_DEV(struct mlx4_dev *dev, struct mlx4_config_dev *config_dev)
+{
+       int err;
+       struct mlx4_cmd_mailbox *mailbox;
+
+       mailbox = mlx4_alloc_cmd_mailbox(dev);
+       if (IS_ERR(mailbox))
+               return PTR_ERR(mailbox);
+
+       memcpy(mailbox->buf, config_dev, sizeof(*config_dev));
+
+       err = mlx4_cmd(dev, mailbox->dma, 0, 0, MLX4_CMD_CONFIG_DEV,
+                      MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
+
+       mlx4_free_cmd_mailbox(dev, mailbox);
+       return err;
+}
+
+int mlx4_config_vxlan_port(struct mlx4_dev *dev, __be16 udp_port)
+{
+       struct mlx4_config_dev config_dev;
+
+       memset(&config_dev, 0, sizeof(config_dev));
+       config_dev.update_flags    = cpu_to_be32(MLX4_VXLAN_UDP_DPORT);
+       config_dev.vxlan_udp_dport = udp_port;
+
+       return mlx4_CONFIG_DEV(dev, &config_dev);
+}
+EXPORT_SYMBOL_GPL(mlx4_config_vxlan_port);
+
+
 int mlx4_SET_ICM_SIZE(struct mlx4_dev *dev, u64 icm_size, u64 *aux_pages)
 {
        int ret = mlx4_cmd_imm(dev, icm_size, aux_pages, 0, 0,

diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index 0099856..c845036 100644 (file)
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -125,6 +125,7 @@ enum {
        /* miscellaneous commands */
        MLX4_CMD_DIAG_RPRT       = 0x30,
        MLX4_CMD_NOP             = 0x31,
+       MLX4_CMD_CONFIG_DEV      = 0x3a,
        MLX4_CMD_ACCESS_MEM      = 0x2e,
        MLX4_CMD_SET_VEP         = 0x52,
 

diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 6b39983..d986c97 100644 (file)
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -1232,4 +1232,6 @@ struct mlx4_slaves_pport mlx4_phys_to_slaves_pport_actv(
 int mlx4_phys_to_slave_port(struct mlx4_dev *dev, int slave, int port);
 
 int mlx4_get_base_gid_ix(struct mlx4_dev *dev, int slave, int port);
+
+int mlx4_config_vxlan_port(struct mlx4_dev *dev, __be16 udp_port);
 #endif /* MLX4_DEVICE_H */