Table 3: NBD Data Protocol Per Thread, Per Type of Data Request
| type |
caller thread |
function |
data on the wire |
(detail) |
|
|
|
|
u32 magic |
|
|
|
|
u32 1 |
| write |
nbd_request |
nbd_send_request |
(<\#174> struct |
u64 unique ID |
|
(kernel) |
|
nbd_request |
u32 request offset |
|
|
|
|
u32 request length |
|
|
|
(<\#174>) char[] |
data |
|
|
|
(<\#172>) struct |
u32magic |
|
nbd_do_it |
nbd_read_stat |
nbd_reply |
u32 error |
|
(client) |
|
|
u64 unique ID |
|
|
|
|
u32 magic |
|
|
|
|
u32 0 |
| read |
nbd_request |
nbd_send_request |
(<\#174> struct |
u64 unique ID |
|
(kernel) |
|
nbd_request |
u32 request offset |
|
|
|
|
u32 request length |
|
|
|
(<\#172>) struct |
u32magic |
|
nbd_do_it |
nbd_read_stat |
nbd_reply |
u32 error |
|
(client) |
|
|
u64 unique ID |
|
|
|
(<\#174>) char[] |
data |
