From: Moni Shoua <monis@xxxxxxxxxxxx>
Query the RoCE support from firmware using the appropriate firmware
commands. Downstream patches will read these capabilities and act
accordingly.
Signed-off-by: Moni Shoua <monis@xxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx4/fw.c | 3 +++
drivers/net/ethernet/mellanox/mlx4/main.c | 6 +++++-
include/linux/mlx4/device.h | 11 +++++++++--
3 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 90db94e..bdd6822 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -157,6 +157,7 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
[29] = "802.1ad offload support",
[31] = "Modifying loopback source checks using UPDATE_QP support",
[32] = "Loopback source checks support",
+ [33] = "RoCEv2 support"
};
int i;
@@ -905,6 +906,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
MLX4_GET(dev_cap->bmme_flags, outbox,
QUERY_DEV_CAP_BMME_FLAGS_OFFSET);
+ if (dev_cap->bmme_flags & MLX4_FLAG_ROCE_V1_V2)
+ dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_ROCE_V1_V2;
if (dev_cap->bmme_flags & MLX4_FLAG_PORT_REMAP)
dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_PORT_REMAP;
MLX4_GET(field, outbox, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 31c491e..fb4968f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -424,8 +424,12 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT)
dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
/* Don't do sense port on multifunction devices (for now at least) */
- if (mlx4_is_mfunc(dev))
+ /* Don't do enable RoCE V2 on multifunction devices */
+ if (mlx4_is_mfunc(dev)) {
dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
+ dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_ROCE_V1_V2;
+ mlx4_dbg(dev, "RoCE V2 is not supported when SR-IOV is enabled\n");
+ }
if (mlx4_low_memory_profile()) {
dev->caps.log_num_macs = MLX4_MIN_LOG_NUM_MAC;
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index d3133be..dbf39ab 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -216,6 +216,7 @@ enum {
MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN = 1LL << 30,
MLX4_DEV_CAP_FLAG2_UPDATE_QP_SRC_CHECK_LB = 1ULL << 31,
MLX4_DEV_CAP_FLAG2_LB_SRC_CHK = 1ULL << 32,
+ MLX4_DEV_CAP_FLAG2_ROCE_V1_V2 = 1LL << 33,
};
enum {
@@ -267,6 +268,7 @@ enum {
MLX4_BMME_FLAG_TYPE_2_WIN = 1 << 9,
MLX4_BMME_FLAG_RESERVED_LKEY = 1 << 10,
MLX4_BMME_FLAG_FAST_REG_WR = 1 << 11,
+ MLX4_BMME_FLAG_ROCE_V1_V2 = 1 << 19,
MLX4_BMME_FLAG_PORT_REMAP = 1 << 24,
MLX4_BMME_FLAG_VSD_INIT2RTR = 1 << 28,
};
@@ -275,6 +277,10 @@ enum {
MLX4_FLAG_PORT_REMAP = MLX4_BMME_FLAG_PORT_REMAP
};
+enum {
+ MLX4_FLAG_ROCE_V1_V2 = MLX4_BMME_FLAG_ROCE_V1_V2
+};
+
enum mlx4_event {
MLX4_EVENT_TYPE_COMP = 0x00,
MLX4_EVENT_TYPE_PATH_MIG = 0x01,
@@ -984,9 +990,10 @@ struct mlx4_mad_ifc {
if (((dev)->caps.port_mask[port] != MLX4_PORT_TYPE_IB))
#define mlx4_foreach_ib_transport_port(port, dev) \
- for ((port) = 1; (port) <= (dev)->caps.num_ports; (port)++) \
+ for ((port) = 1; (port) <= (dev)->caps.num_ports; (port)++) \
if (((dev)->caps.port_mask[port] == MLX4_PORT_TYPE_IB) || \
- ((dev)->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
+ ((dev)->caps.flags & MLX4_DEV_CAP_FLAG_IBOE) || \
+ ((dev)->caps.flags2 & MLX4_DEV_CAP_FLAG2_ROCE_V1_V2))
#define MLX4_INVALID_SLAVE_ID 0xFF
#define MLX4_SINK_COUNTER_INDEX(dev) (dev->caps.max_counters - 1)
--
2.1.0
--
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