summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorJack Morgenstein <jackm@dev.mellanox.co.il>2012-08-03 10:40:56 +0200
committerRoland Dreier <roland@purestorage.com>2012-10-01 05:33:43 +0200
commitafa8fd1db9f295a0c4130bc6d87bf8b05bdd0523 (patch)
tree725c4a2c6a9044ff9ac79e4f6a863393756953f0
parentmlx4: Activate SR-IOV mode for IB (diff)
downloadlinux-afa8fd1db9f295a0c4130bc6d87bf8b05bdd0523.tar.xz
linux-afa8fd1db9f295a0c4130bc6d87bf8b05bdd0523.zip
mlx4: Paravirtualize Node Guids for slaves
This is necessary in order to support > 1 VF/PF in a VM for software that uses the node guid as a discriminator, such as librdmacm. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <roland@purestorage.com>
-rw-r--r--drivers/infiniband/hw/mlx4/mad.c14
-rw-r--r--drivers/infiniband/hw/mlx4/mlx4_ib.h3
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/cmd.c11
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/main.c22
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/mlx4.h1
-rw-r--r--include/linux/mlx4/device.h2
6 files changed, 53 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index b91b4865d635..603a114b3dfe 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -35,6 +35,7 @@
#include <rdma/ib_sa.h>
#include <rdma/ib_cache.h>
+#include <linux/random.h>
#include <linux/mlx4/cmd.h>
#include <linux/gfp.h>
#include <rdma/ib_pma.h>
@@ -89,6 +90,12 @@ static void handle_lid_change_event(struct mlx4_ib_dev *dev, u8 port_num);
static void __propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num,
int block, u32 change_bitmap);
+__be64 mlx4_ib_gen_node_guid(void)
+{
+#define NODE_GUID_HI ((u64) (((u64)IB_OPENIB_OUI) << 40))
+ return cpu_to_be64(NODE_GUID_HI | random32());
+}
+
__be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx)
{
return cpu_to_be64(atomic_inc_return(&ctx->tid)) |
@@ -1962,6 +1969,13 @@ int mlx4_ib_init_sriov(struct mlx4_ib_dev *dev)
return 0;
}
+ for (i = 0; i < dev->dev->caps.sqp_demux; i++) {
+ if (i == mlx4_master_func_num(dev->dev))
+ mlx4_put_slave_node_guid(dev->dev, i, dev->ib_dev.node_guid);
+ else
+ mlx4_put_slave_node_guid(dev->dev, i, mlx4_ib_gen_node_guid());
+ }
+
err = mlx4_ib_init_alias_guid_service(dev);
if (err) {
mlx4_ib_warn(&dev->ib_dev, "Failed init alias guid process.\n");
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index e57a220a4d55..e04cbc9a54a5 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -723,4 +723,7 @@ int mlx4_ib_device_register_sysfs(struct mlx4_ib_dev *device) ;
void mlx4_ib_device_unregister_sysfs(struct mlx4_ib_dev *device);
+__be64 mlx4_ib_gen_node_guid(void);
+
+
#endif /* MLX4_IB_H */
diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c
index 78fdbd653fa9..90774b7e47a4 100644
--- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
@@ -696,6 +696,7 @@ static int mlx4_MAD_IFC_wrapper(struct mlx4_dev *dev, int slave,
struct ib_smp *outsmp = outbox->buf;
__be16 *outtab = (__be16 *)(outsmp->data);
__be32 slave_cap_mask;
+ __be64 slave_node_guid;
port = vhcr->in_modifier;
if (smp->base_version == 1 &&
@@ -755,6 +756,16 @@ static int mlx4_MAD_IFC_wrapper(struct mlx4_dev *dev, int slave,
}
return err;
}
+ if (smp->attr_id == IB_SMP_ATTR_NODE_INFO) {
+ err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
+ vhcr->in_modifier, vhcr->op_modifier,
+ vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
+ if (!err) {
+ slave_node_guid = mlx4_get_slave_node_guid(dev, slave);
+ memcpy(outsmp->data + 12, &slave_node_guid, 8);
+ }
+ return err;
+ }
}
}
if (slave != mlx4_master_func_num(dev) &&
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 2294b7173180..76f69fdd01d5 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -435,6 +435,28 @@ void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int
}
EXPORT_SYMBOL(mlx4_sync_pkey_table);
+void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid)
+{
+ struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
+
+ if (!mlx4_is_master(dev))
+ return;
+
+ priv->slave_node_guids[slave] = guid;
+}
+EXPORT_SYMBOL(mlx4_put_slave_node_guid);
+
+__be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave)
+{
+ struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
+
+ if (!mlx4_is_master(dev))
+ return 0;
+
+ return priv->slave_node_guids[slave];
+}
+EXPORT_SYMBOL(mlx4_get_slave_node_guid);
+
int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
{
struct mlx4_priv *priv = mlx4_priv(dev);
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
index 399793a23457..4b1fbd84a68f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -810,6 +810,7 @@ struct mlx4_priv {
int reserved_mtts;
int fs_hash_mode;
u8 virt2phys_pkey[MLX4_MFUNC_MAX][MLX4_MAX_PORTS][MLX4_MAX_PORT_PKEYS];
+ __be64 slave_node_guids[MLX4_MFUNC_MAX];
};
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 9b243df789ef..c0f8f74a0a5e 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -981,5 +981,7 @@ int mlx4_gen_port_state_change_eqe(struct mlx4_dev *dev, int slave, u8 port, u8
enum slave_port_state mlx4_get_slave_port_state(struct mlx4_dev *dev, int slave, u8 port);
int set_and_calc_slave_port_state(struct mlx4_dev *dev, int slave, u8 port, int event, enum slave_port_gen_event *gen_event);
+void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid);
+__be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave);
#endif /* MLX4_DEVICE_H */