610f8f441a
A doc page (.rst file) can be referenced with :doc: syntax instead of :ref: to .. anchor. Signed-off-by: Thomas Monjalon <thomas@monjalon.net> Acked-by: Shahaf Shuler <shahafs@mellanox.com>
306 lines
8.6 KiB
ReStructuredText
306 lines
8.6 KiB
ReStructuredText
.. SPDX-License-Identifier: BSD-3-Clause
|
|
Copyright 2017 Mellanox Technologies, Ltd
|
|
|
|
Generic flow API - examples
|
|
===========================
|
|
|
|
This document demonstrates some concrete examples for programming flow rules
|
|
with the ``rte_flow`` APIs.
|
|
|
|
* Detail of the rte_flow APIs can be found in the following link:
|
|
:doc:`../prog_guide/rte_flow`.
|
|
|
|
* Details of the TestPMD commands to set the flow rules can be found in the
|
|
following link: :ref:`TestPMD Flow rules <testpmd_rte_flow>`
|
|
|
|
Simple IPv4 drop
|
|
----------------
|
|
|
|
Description
|
|
~~~~~~~~~~~
|
|
|
|
In this example we will create a simple rule that drops packets whose IPv4
|
|
destination equals 192.168.3.2. This code is equivalent to the following
|
|
testpmd command (wrapped for clarity)::
|
|
|
|
tpmd> flow create 0 ingress pattern eth / vlan /
|
|
ipv4 dst is 192.168.3.2 / end actions drop / end
|
|
|
|
Code
|
|
~~~~
|
|
|
|
.. code-block:: c
|
|
|
|
/* create the attribute structure */
|
|
struct rte_flow_attr attr = { .ingress = 1 };
|
|
struct rte_flow_item pattern[MAX_PATTERN_IN_FLOW];
|
|
struct rte_flow_action actions[MAX_ACTIONS_IN_FLOW];
|
|
struct rte_flow_item_eth eth;
|
|
struct rte_flow_item_vlan vlan;
|
|
struct rte_flow_item_ipv4 ipv4;
|
|
struct rte_flow *flow;
|
|
struct rte_flow_error error;
|
|
|
|
/* setting the eth to pass all packets */
|
|
pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH;
|
|
pattern[0].spec = ð
|
|
|
|
/* set the vlan to pas all packets */
|
|
pattern[1] = RTE_FLOW_ITEM_TYPE_VLAN;
|
|
pattern[1].spec = &vlan;
|
|
|
|
/* set the dst ipv4 packet to the required value */
|
|
ipv4.hdr.dst_addr = htonl(0xc0a80302);
|
|
pattern[2].type = RTE_FLOW_ITEM_TYPE_IPV4;
|
|
pattern[2].spec = &ipv4;
|
|
|
|
/* end the pattern array */
|
|
pattern[3].type = RTE_FLOW_ITEM_TYPE_END;
|
|
|
|
/* create the drop action */
|
|
actions[0].type = RTE_FLOW_ACTION_TYPE_DROP;
|
|
actions[1].type = RTE_FLOW_ACTION_TYPE_END;
|
|
|
|
/* validate and create the flow rule */
|
|
if (!rte_flow_validate(port_id, &attr, pattern, actions, &error))
|
|
flow = rte_flow_create(port_id, &attr, pattern, actions, &error);
|
|
|
|
Output
|
|
~~~~~~
|
|
|
|
Terminal 1: running sample app with the flow rule disabled::
|
|
|
|
./filter-program disable
|
|
[waiting for packets]
|
|
|
|
Terminal 2: running scapy::
|
|
|
|
$scapy
|
|
welcome to Scapy
|
|
>> sendp(Ether()/Dot1Q()/IP(src='176.80.50.4', dst='192.168.3.1'), \
|
|
iface='some interface', count=1)
|
|
>> sendp(Ether()/Dot1Q()/IP(src='176.80.50.5', dst='192.168.3.2'), \
|
|
iface='some interface', count=1)
|
|
|
|
Terminal 1: output log::
|
|
|
|
received packet with src ip = 176.80.50.4
|
|
received packet with src ip = 176.80.50.5
|
|
|
|
Terminal 1: running sample the app flow rule enabled::
|
|
|
|
./filter-program enabled
|
|
[waiting for packets]
|
|
|
|
Terminal 2: running scapy::
|
|
|
|
$scapy
|
|
welcome to Scapy
|
|
>> sendp(Ether()/Dot1Q()/IP(src='176.80.50.4', dst='192.168.3.1'), \
|
|
iface='some interface', count=1)
|
|
>> sendp(Ether()/Dot1Q()/IP(src='176.80.50.5', dst ='192.168.3.2'), \
|
|
iface='some interface', count=1)
|
|
|
|
Terminal 1: output log::
|
|
|
|
received packet with src ip = 176.80.50.4
|
|
|
|
Range IPv4 drop
|
|
----------------
|
|
|
|
Description
|
|
~~~~~~~~~~~
|
|
|
|
In this example we will create a simple rule that drops packets whose IPv4
|
|
destination is in the range 192.168.3.0 to 192.168.3.255. This is done using
|
|
a mask.
|
|
|
|
This code is equivalent to the following testpmd command (wrapped for
|
|
clarity)::
|
|
|
|
tpmd> flow create 0 ingress pattern eth / vlan /
|
|
ipv4 dst spec 192.168.3.0 dst mask 255.255.255.0 /
|
|
end actions drop / end
|
|
|
|
Code
|
|
~~~~
|
|
|
|
.. code-block:: c
|
|
|
|
struct rte_flow_attr attr = {.ingress = 1};
|
|
struct rte_flow_item pattern[MAX_PATTERN_IN_FLOW];
|
|
struct rte_flow_action actions[MAX_ACTIONS_IN_FLOW];
|
|
struct rte_flow_item_eth eth;
|
|
struct rte_flow_item_vlan vlan;
|
|
struct rte_flow_item_ipv4 ipv4;
|
|
struct rte_flow_item_ipv4 ipv4_mask;
|
|
struct rte_flow *flow;
|
|
struct rte_flow_error error;
|
|
|
|
/* setting the eth to pass all packets */
|
|
pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH;
|
|
pattern[0].spec = ð
|
|
|
|
/* set the vlan to pas all packets */
|
|
pattern[1] = RTE_FLOW_ITEM_TYPE_VLAN;
|
|
pattern[1].spec = &vlan;
|
|
|
|
/* set the dst ipv4 packet to the required value */
|
|
ipv4.hdr.dst_addr = htonl(0xc0a80300);
|
|
ipv4_mask.hdr.dst_addr = htonl(0xffffff00);
|
|
pattern[2].type = RTE_FLOW_ITEM_TYPE_IPV4;
|
|
pattern[2].spec = &ipv4;
|
|
pattern[2].mask = &ipv4_mask;
|
|
|
|
/* end the pattern array */
|
|
pattern[3].type = RTE_FLOW_ITEM_TYPE_END;
|
|
|
|
/* create the drop action */
|
|
actions[0].type = RTE_FLOW_ACTION_TYPE_DROP;
|
|
actions[1].type = RTE_FLOW_ACTION_TYPE_END;
|
|
|
|
/* validate and create the flow rule */
|
|
if (!rte_flow_validate(port_id, &attr, pattern, actions, &error))
|
|
flow = rte_flow_create(port_id, &attr, pattern, actions, &error);
|
|
|
|
Output
|
|
~~~~~~
|
|
|
|
Terminal 1: running sample app flow rule disabled::
|
|
|
|
./filter-program disable
|
|
[waiting for packets]
|
|
|
|
Terminal 2: running scapy::
|
|
|
|
$scapy
|
|
welcome to Scapy
|
|
>> sendp(Ether()/Dot1Q()/IP(src='176.80.50.4', dst='192.168.3.1'), \
|
|
iface='some interface', count=1)
|
|
>> sendp(Ether()/Dot1Q()/IP(src='176.80.50.5', dst='192.168.3.2'), \
|
|
iface='some interface', count=1)
|
|
>> sendp(Ether()/Dot1Q()/IP(src='176.80.50.6', dst='192.168.5.2'), \
|
|
iface='some interface', count=1)
|
|
|
|
Terminal 1: output log::
|
|
|
|
received packet with src ip = 176.80.50.4
|
|
received packet with src ip = 176.80.50.5
|
|
received packet with src ip = 176.80.50.6
|
|
|
|
Terminal 1: running sample app flow rule enabled::
|
|
|
|
./filter-program enabled
|
|
[waiting for packets]
|
|
|
|
Terminal 2: running scapy::
|
|
|
|
$scapy
|
|
welcome to Scapy
|
|
>> sendp(Ether()/Dot1Q()/IP(src='176.80.50.4', dst='192.168.3.1'), \
|
|
iface='some interface', count=1)
|
|
>> sendp(Ether()/Dot1Q()/IP(src='176.80.50.5', dst='192.168.3.2'), \
|
|
iface='some interface', count=1)
|
|
>> sendp(Ether()/Dot1Q()/IP(src='176.80.50.6', dst='192.168.5.2'), \
|
|
iface='some interface', count=1)
|
|
|
|
Terminal 1: output log::
|
|
|
|
received packet with src ip = 176.80.50.6
|
|
|
|
Send vlan to queue
|
|
------------------
|
|
|
|
Description
|
|
~~~~~~~~~~~
|
|
|
|
In this example we will create a rule that routes all vlan id 123 to queue 3.
|
|
|
|
This code is equivalent to the following testpmd command (wrapped for
|
|
clarity)::
|
|
|
|
tpmd> flow create 0 ingress pattern eth / vlan vid spec 123 /
|
|
end actions queue index 3 / end
|
|
|
|
Code
|
|
~~~~
|
|
|
|
.. code-block:: c
|
|
|
|
struct rte_flow_attr attr = { .ingress = 1 };
|
|
struct rte_flow_item pattern[MAX_PATTERN_IN_FLOW];
|
|
struct rte_flow_action actions[MAX_ACTIONS_IN_FLOW];
|
|
struct rte_flow_item_eth eth;
|
|
struct rte_flow_item_vlan vlan;
|
|
struct rte_flow_action_queue queue = { .index = 3 };
|
|
struct rte_flow *flow;
|
|
struct rte_flow_error error;
|
|
|
|
/* setting the eth to pass all packets */
|
|
pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH;
|
|
pattern[0].spec = ð
|
|
|
|
/* set the vlan to pas all packets */
|
|
vlan.vid = 123;
|
|
pattern[1] = RTE_FLOW_ITEM_TYPE_VLAN;
|
|
pattern[1].spec = &vlan;
|
|
|
|
/* end the pattern array */
|
|
pattern[2].type = RTE_FLOW_ITEM_TYPE_END;
|
|
|
|
/* create the queue action */
|
|
actions[0].type = RTE_FLOW_ACTION_TYPE_QUEUE;
|
|
actions[0].conf = &queue;
|
|
actions[1].type = RTE_FLOW_ACTION_TYPE_END;
|
|
|
|
/* validate and create the flow rule */
|
|
if (!rte_flow_validate(port_id, &attr, pattern, actions, &error))
|
|
flow = rte_flow_create(port_id, &attr, pattern, actions, &error);
|
|
|
|
Output
|
|
~~~~~~
|
|
|
|
Terminal 1: running sample app flow rule disabled::
|
|
|
|
./filter-program disable
|
|
[waiting for packets]
|
|
|
|
Terminal 2: running scapy::
|
|
|
|
$scapy
|
|
welcome to Scapy
|
|
>> sendp(Ether()/Dot1Q(vlan=123)/IP(src='176.80.50.4', dst='192.168.3.1'), \
|
|
iface='some interface', count=1)
|
|
>> sendp(Ether()/Dot1Q(vlan=50)/IP(src='176.80.50.5', dst='192.168.3.2'), \
|
|
iface='some interface', count=1)
|
|
>> sendp(Ether()/Dot1Q(vlan=123)/IP(src='176.80.50.6', dst='192.168.5.2'), \
|
|
iface='some interface', count=1)
|
|
|
|
Terminal 1: output log::
|
|
|
|
received packet with src ip = 176.80.50.4 sent to queue 2
|
|
received packet with src ip = 176.80.50.5 sent to queue 1
|
|
received packet with src ip = 176.80.50.6 sent to queue 0
|
|
|
|
Terminal 1: running sample app flow rule enabled::
|
|
|
|
./filter-program enabled
|
|
[waiting for packets]
|
|
|
|
Terminal 2: running scapy::
|
|
|
|
$scapy
|
|
welcome to Scapy
|
|
>> sendp(Ether()/Dot1Q(vlan=123)/IP(src='176.80.50.4', dst='192.168.3.1'), \
|
|
iface='some interface', count=1)
|
|
>> sendp(Ether()/Dot1Q(vlan=50)/IP(src='176.80.50.5', dst='192.168.3.2'), \
|
|
iface='some interface', count=1)
|
|
>> sendp(Ether()/Dot1Q(vlan=123)/IP(src='176.80.50.6', dst='192.168.5.2'), \
|
|
iface='some interface', count=1)
|
|
|
|
Terminal 1: output log::
|
|
|
|
received packet with src ip = 176.80.50.4 sent to queue 3
|
|
received packet with src ip = 176.80.50.5 sent to queue 1
|
|
received packet with src ip = 176.80.50.6 sent to queue 3
|