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IB/mlx5: Keep mlx5 MRs in a radix tree under device

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This will be useful when processing signature errors on a specific
key.  The mlx5 driver will lookup the matching mlx5 memory region
structure and mark it as dirty (contains signature errors).

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Sagi Grimberg 2014-02-23 14:19:10 +02:00 committed by Roland Dreier
parent 2ac45934f8
commit 3bcdb17a5e
3 changed files with 43 additions and 0 deletions
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1
drivers/net/ethernet/mellanox/mlx5/core/main.c
View File

@ -446,6 +446,7 @@ int mlx5_dev_init(struct mlx5_core_dev *dev, struct pci_dev *pdev)
mlx5_init_cq_table(dev);
mlx5_init_qp_table(dev);
mlx5_init_srq_table(dev);
mlx5_init_mr_table(dev);
return 0;

24
drivers/net/ethernet/mellanox/mlx5/core/mr.c
View File

@ -36,11 +36,24 @@
#include <linux/mlx5/cmd.h>
#include "mlx5_core.h"
void mlx5_init_mr_table(struct mlx5_core_dev *dev)
{
struct mlx5_mr_table *table = &dev->priv.mr_table;
rwlock_init(&table->lock);
INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
}
void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev)
{
}
int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
struct mlx5_create_mkey_mbox_in *in, int inlen,
mlx5_cmd_cbk_t callback, void *context,
struct mlx5_create_mkey_mbox_out *out)
{
struct mlx5_mr_table *table = &dev->priv.mr_table;
struct mlx5_create_mkey_mbox_out lout;
int err;
u8 key;
@ -73,14 +86,21 @@ int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
be32_to_cpu(lout.mkey), key, mr->key);
/* connect to MR tree */
write_lock_irq(&table->lock);
err = radix_tree_insert(&table->tree, mlx5_base_mkey(mr->key), mr);
write_unlock_irq(&table->lock);
return err;
}
EXPORT_SYMBOL(mlx5_core_create_mkey);
int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
{
struct mlx5_mr_table *table = &dev->priv.mr_table;
struct mlx5_destroy_mkey_mbox_in in;
struct mlx5_destroy_mkey_mbox_out out;
unsigned long flags;
int err;
memset(&in, 0, sizeof(in));
@ -95,6 +115,10 @@ int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
if (out.hdr.status)
return mlx5_cmd_status_to_err(&out.hdr);
write_lock_irqsave(&table->lock, flags);
radix_tree_delete(&table->tree, mlx5_base_mkey(mr->key));
write_unlock_irqrestore(&table->lock, flags);
return err;
}
EXPORT_SYMBOL(mlx5_core_destroy_mkey);

18
include/linux/mlx5/driver.h
View File

@ -491,6 +491,13 @@ struct mlx5_srq_table {
struct radix_tree_root tree;
};
struct mlx5_mr_table {
/* protect radix tree
*/
rwlock_t lock;
struct radix_tree_root tree;
};
struct mlx5_priv {
char name[MLX5_MAX_NAME_LEN];
struct mlx5_eq_table eq_table;
@ -520,6 +527,10 @@ struct mlx5_priv {
struct mlx5_cq_table cq_table;
/* end: cq staff */
/* start: mr staff */
struct mlx5_mr_table mr_table;
/* end: mr staff */
/* start: alloc staff */
struct mutex pgdir_mutex;
struct list_head pgdir_list;
@ -667,6 +678,11 @@ static inline void mlx5_vfree(const void *addr)
kfree(addr);
}
static inline u32 mlx5_base_mkey(const u32 key)
{
return key & 0xffffff00u;
}
int mlx5_dev_init(struct mlx5_core_dev *dev, struct pci_dev *pdev);
void mlx5_dev_cleanup(struct mlx5_core_dev *dev);
int mlx5_cmd_init(struct mlx5_core_dev *dev);
@ -701,6 +717,8 @@ int mlx5_core_query_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
struct mlx5_query_srq_mbox_out *out);
int mlx5_core_arm_srq(struct mlx5_core_dev *dev, struct mlx5_core_srq *srq,
u16 lwm, int is_srq);
void mlx5_init_mr_table(struct mlx5_core_dev *dev);
void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev);
int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
struct mlx5_create_mkey_mbox_in *in, int inlen,
mlx5_cmd_cbk_t callback, void *context,