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Tools: update README

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logwang 2017-05-23 23:35:39 +08:00 committed by GitHub
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@ -7,19 +7,25 @@ All other directories are useful tools ported from FreeBSD.
# ipc
This is a simple implemention using dpdk `rte_ring`.
`ff_ipc_msg_alloc` get msg structure from rte_mempool.
`ff_ipc_msg_free` put msg to rte_mempool.
`ff_ipc_send` enqueue msg to rte_ring.
`ff_ipc_recv` dequeue msg from rte_ring.
```
ff_ipc_msg_alloc: get msg structure from rte_mempool.
ff_ipc_msg_free: put msg to rte_mempool.
ff_ipc_send: enqueue msg to rte_ring.
ff_ipc_recv: dequeue msg from rte_ring.
```
Since F-Stack is multi-process architecture and every process has an independent stack, so we must communicate with every F-Stack process.
# sysctl
Usage:
`sysctl -p <f-stack proc_id> [-bdehiNnoqTtWx] [ -B <bufsize> ] [-f filename] name[=value] ...`
`sysctl -p <f-stack proc_id> [-bdehNnoqTtWx] [ -B <bufsize> ] -a`
```
sysctl -p <f-stack proc_id> [-bdehiNnoqTtWx] [ -B <bufsize> ] [-f filename] name[=value] ...
sysctl -p <f-stack proc_id> [-bdehNnoqTtWx] [ -B <bufsize> ] -a
```
```
-p Which F-Stack process to communicate with, default 0.
```
Except this option, it is same with the original FreeBSD sysctl, see [Manual page](https://www.freebsd.org/cgi/man.cgi?sysctl).