The FIFO qdisc comes in two flavours:.
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Detailed Description
- bfifo (Byte FIFO)
- Allows enqueuing until the currently queued volume in bytes exceeds the configured limit.backlog contains currently enqueued volume in bytes.
- pfifo (Packet FIFO)
- Allows enquueing until the currently queued number of packets exceeds the configured limit.
The configuration is exactly the same, the decision which of the two variations is going to be used is made based on the kind of the qdisc (rtnl_qdisc_set_kind()).
Function Documentation
int rtnl_qdisc_fifo_set_limit |
( |
struct rtnl_qdisc * |
qdisc, |
|
|
int |
limit | |
|
) |
| | |
- Parameters:
-
| qdisc | FIFO qdisc to be modified. |
| limit | New limit. |
- Returns:
- 0 on success or a negative error code.
Definition at line 145 of file fifo.c.
00146 {
00147 struct rtnl_fifo *fifo;
00148
00149 fifo = fifo_alloc(qdisc);
00150 if (!fifo)
00151 return nl_errno(ENOMEM);
00152
00153 fifo->qf_limit = limit;
00154 fifo->qf_mask |= SCH_FIFO_ATTR_LIMIT;
00155
00156 return 0;
00157 }
int rtnl_qdisc_fifo_get_limit |
( |
struct rtnl_qdisc * |
qdisc |
) |
|
- Parameters:
-
- Returns:
- Numeric limit or a negative error code.
Definition at line 164 of file fifo.c.
00165 {
00166 struct rtnl_fifo *fifo;
00167
00168 fifo = fifo_qdisc(qdisc);
00169 if (fifo && fifo->qf_mask & SCH_FIFO_ATTR_LIMIT)
00170 return fifo->qf_limit;
00171 else
00172 return nl_errno(ENOMEM);
00173 }