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OpenCloudOS-Kernel
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RDMA/uverbs: Properly check command supported mask 

The check based on index is not sufficient because

  IB_USER_VERBS_EX_CMD_CREATE_CQ = IB_USER_VERBS_CMD_CREATE_CQ

and IB_USER_VERBS_CMD_CREATE_CQ <= IB_USER_VERBS_CMD_OPEN_QP,
so if we execute IB_USER_VERBS_EX_CMD_CREATE_CQ this code checks
ib_dev->uverbs_cmd_mask not ib_dev->uverbs_ex_cmd_mask.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Leon Romanovsky 2018-02-21 18:12:38 +02:00 committed by Doug Ledford
parent 77833b8a48
commit eb455e329b
1 changed files with 6 additions and 12 deletions
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18
drivers/infiniband/core/uverbs_main.c
View File

@ -635,19 +635,13 @@ err_put_refs:
return filp;
}
static bool verify_command_mask(struct ib_device *ib_dev, __u32 command)
static bool verify_command_mask(struct ib_device *ib_dev,
__u32 command, bool extended)
{
u64 mask;
if (!extended)
return ib_dev->uverbs_cmd_mask & BIT_ULL(command);
if (command <= IB_USER_VERBS_CMD_OPEN_QP)
mask = ib_dev->uverbs_cmd_mask;
else
mask = ib_dev->uverbs_ex_cmd_mask;
if (mask & ((u64)1 << command))
return true;
return false;
return ib_dev->uverbs_ex_cmd_mask & BIT_ULL(command);
}
static bool verify_command_idx(u32 command, bool extended)
@ -722,7 +716,7 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf,
goto out;
}
if (!verify_command_mask(ib_dev, command)) {
if (!verify_command_mask(ib_dev, command, extended)) {
ret = -EOPNOTSUPP;
goto out;
}