@@ -176,6 +176,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
#define QUERY_DEV_CAP_MAX_GID_OFFSET 0x3b
#define QUERY_DEV_CAP_RATE_SUPPORT_OFFSET 0x3c
#define QUERY_DEV_CAP_MAX_PKEY_OFFSET 0x3f
+#define QUERY_DEV_CAP_ETH_UC_LOOPBACK_OFFSET 0x43
#define QUERY_DEV_CAP_FLAGS_OFFSET 0x44
#define QUERY_DEV_CAP_RSVD_UAR_OFFSET 0x48
#define QUERY_DEV_CAP_UAR_SZ_OFFSET 0x49
@@ -266,6 +267,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
dev_cap->max_msg_sz = 1 << (field & 0x1f);
MLX4_GET(stat_rate, outbox, QUERY_DEV_CAP_RATE_SUPPORT_OFFSET);
dev_cap->stat_rate_support = stat_rate;
+ MLX4_GET(field, outbox, QUERY_DEV_CAP_ETH_UC_LOOPBACK_OFFSET);
+ dev_cap->loopback_support = field & 0x1;
MLX4_GET(dev_cap->flags, outbox, QUERY_DEV_CAP_FLAGS_OFFSET);
MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_UAR_OFFSET);
dev_cap->reserved_uars = field >> 4;
@@ -74,6 +74,7 @@ struct mlx4_dev_cap {
u64 def_mac[MLX4_MAX_PORTS + 1];
u16 eth_mtu[MLX4_MAX_PORTS + 1];
u16 stat_rate_support;
+ int loopback_support;
u32 flags;
int reserved_uars;
int uar_size;
@@ -220,6 +220,7 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
dev->caps.bmme_flags = dev_cap->bmme_flags;
dev->caps.reserved_lkey = dev_cap->reserved_lkey;
dev->caps.stat_rate_support = dev_cap->stat_rate_support;
+ dev->caps.loopback_support = dev_cap->loopback_support;
dev->caps.max_gso_sz = dev_cap->max_gso_sz;
dev->caps.log_num_macs = log_num_mac;
@@ -228,6 +228,7 @@ struct mlx4_caps {
u32 bmme_flags;
u32 reserved_lkey;
u16 stat_rate_support;
+ int loopback_support;
u8 port_width_cap[MLX4_MAX_PORTS + 1];
int max_gso_sz;
int reserved_qps_cnt[MLX4_NUM_QP_REGION];
The fw reports whether loopback capabilities are enabled Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> --- drivers/net/mlx4/fw.c | 3 +++ drivers/net/mlx4/fw.h | 1 + drivers/net/mlx4/main.c | 1 + include/linux/mlx4/device.h | 1 + 4 files changed, 6 insertions(+), 0 deletions(-)