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mlx4_core: Add network flow counters

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ConnectX devices support a set of flow counters that can be attached
to a set containing one or more QPs.  Each such counter tracks receive
and transmit packets and bytes of these QPs.  This patch queries the
device to check support for counters, handles initialization of the
HCA to enable counters, and initializes a bitmap allocator to control
counter allocations.  Derived from patch by Eli Cohen <eli@mellanox.co.il>.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Or Gerlitz
2011-06-15 14:47:14 +00:00
committed by Roland Dreier
parent 98a13e487a
commit f2a3f6a32c
6 changed files with 86 additions and 2 deletions
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18
include/linux/mlx4/device.h
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@@ -78,7 +78,8 @@ enum {
MLX4_DEV_CAP_FLAG_WOL = 1LL << 38,
MLX4_DEV_CAP_FLAG_UDP_RSS = 1LL << 40,
MLX4_DEV_CAP_FLAG_VEP_UC_STEER = 1LL << 41,
MLX4_DEV_CAP_FLAG_VEP_MC_STEER = 1LL << 42
MLX4_DEV_CAP_FLAG_VEP_MC_STEER = 1LL << 42,
MLX4_DEV_CAP_FLAG_COUNTERS = 1LL << 48
};
enum {
@@ -274,6 +275,7 @@ struct mlx4_caps {
u8 supported_type[MLX4_MAX_PORTS + 1];
u32 port_mask;
enum mlx4_port_type possible_type[MLX4_MAX_PORTS + 1];
u32 max_counters;
};
struct mlx4_buf_list {
@@ -438,6 +440,17 @@ union mlx4_ext_av {
struct mlx4_eth_av eth;
};
struct mlx4_counter {
u8 reserved1[3];
u8 counter_mode;
__be32 num_ifc;
u32 reserved2[2];
__be64 rx_frames;
__be64 rx_bytes;
__be64 tx_frames;
__be64 tx_bytes;
};
struct mlx4_dev {
struct pci_dev *pdev;
unsigned long flags;
@@ -568,4 +581,7 @@ void mlx4_release_eq(struct mlx4_dev *dev, int vec);
int mlx4_wol_read(struct mlx4_dev *dev, u64 *config, int port);
int mlx4_wol_write(struct mlx4_dev *dev, u64 config, int port);
int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx);
void mlx4_counter_free(struct mlx4_dev *dev, u32 idx);
#endif /* MLX4_DEVICE_H */