diff options
| -rw-r--r-- | drivers/infiniband/core/uverbs_main.c | 29 | ||||
| -rw-r--r-- | include/uapi/rdma/ib_user_verbs.h | 10 |
2 files changed, 34 insertions, 5 deletions
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c index 2c6f0f2ecd9d..e4e7b2449d19 100644 --- a/drivers/infiniband/core/uverbs_main.c +++ b/drivers/infiniband/core/uverbs_main.c @@ -583,9 +583,6 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf, if (copy_from_user(&hdr, buf, sizeof hdr)) return -EFAULT; - if (hdr.in_words * 4 != count) - return -EINVAL; - if (hdr.command >= ARRAY_SIZE(uverbs_cmd_table) || !uverbs_cmd_table[hdr.command]) return -EINVAL; @@ -597,8 +594,30 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf, if (!(file->device->ib_dev->uverbs_cmd_mask & (1ull << hdr.command))) return -ENOSYS; - return uverbs_cmd_table[hdr.command](file, buf + sizeof hdr, - hdr.in_words * 4, hdr.out_words * 4); + if (hdr.command >= IB_USER_VERBS_CMD_THRESHOLD) { + struct ib_uverbs_cmd_hdr_ex hdr_ex; + + if (copy_from_user(&hdr_ex, buf, sizeof(hdr_ex))) + return -EFAULT; + + if (((hdr_ex.in_words + hdr_ex.provider_in_words) * 4) != count) + return -EINVAL; + + return uverbs_cmd_table[hdr.command](file, + buf + sizeof(hdr_ex), + (hdr_ex.in_words + + hdr_ex.provider_in_words) * 4, + (hdr_ex.out_words + + hdr_ex.provider_out_words) * 4); + } else { + if (hdr.in_words * 4 != count) + return -EINVAL; + + return uverbs_cmd_table[hdr.command](file, + buf + sizeof(hdr), + hdr.in_words * 4, + hdr.out_words * 4); + } } static int ib_uverbs_mmap(struct file *filp, struct vm_area_struct *vma) diff --git a/include/uapi/rdma/ib_user_verbs.h b/include/uapi/rdma/ib_user_verbs.h index 805711ea2005..61535aa0a62e 100644 --- a/include/uapi/rdma/ib_user_verbs.h +++ b/include/uapi/rdma/ib_user_verbs.h @@ -43,6 +43,7 @@ * compatibility are made. */ #define IB_USER_VERBS_ABI_VERSION 6 +#define IB_USER_VERBS_CMD_THRESHOLD 50 enum { IB_USER_VERBS_CMD_GET_CONTEXT, @@ -123,6 +124,15 @@ struct ib_uverbs_cmd_hdr { __u16 out_words; }; +struct ib_uverbs_cmd_hdr_ex { + __u32 command; + __u16 in_words; + __u16 out_words; + __u16 provider_in_words; + __u16 provider_out_words; + __u32 cmd_hdr_reserved; +}; + struct ib_uverbs_get_context { __u64 response; __u64 driver_data[0]; |