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ethdev: add NSH key field to flow API

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Add new rte_flow_item_nsh in order to match the network service header
based on RFC 8300.

Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
This commit is contained in:
Kiran Kumar K 2019-07-25 14:33:43 +05:30 committed by Ferruh Yigit
parent e72bd9603e
commit 86e1974a42
3 changed files with 58 additions and 0 deletions
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18
doc/guides/prog_guide/rte_flow.rst
View File

@ -1247,6 +1247,24 @@ Matches a PPPoE session protocol identifier.
| ``mask`` | ``data`` | bit-mask applies to "spec" and "last" |
+----------+----------+---------------------------------------+
Item: ``NSH``
^^^^^^^^^^^^^
Matches a network service header (RFC 8300).
- ``version``: normally 0x0 (2 bits).
- ``oam_pkt``: indicate oam packet (1 bit).
- ``reserved``: reserved bit (1 bit).
- ``ttl``: maximum SFF hopes (6 bits).
- ``length``: total length in 4 bytes words (6 bits).
- ``reserved1``: reserved1 bits (4 bits).
- ``mdtype``: ndicates format of NSH header (4 bits).
- ``next_proto``: indicates protocol type of encap data (8 bits).
- ``spi``: service path identifier (3 bytes).
- ``sindex``: service index (1 byte).
- Default ``mask`` matches mdtype, next_proto, spi, sindex.
Actions
~~~~~~~

1
lib/librte_ethdev/rte_flow.c
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@ -80,6 +80,7 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] = {
MK_FLOW_ITEM(PPPOED, sizeof(struct rte_flow_item_pppoe)),
MK_FLOW_ITEM(PPPOE_PROTO_ID,
sizeof(struct rte_flow_item_pppoe_proto_id)),
MK_FLOW_ITEM(NSH, sizeof(struct rte_flow_item_nsh)),
};
/** Generate flow_action[] entry. */

39
lib/librte_ethdev/rte_flow.h
View File

@ -470,6 +470,13 @@ enum rte_flow_item_type {
* See struct rte_flow_item_pppoe_proto_id.
*/
RTE_FLOW_ITEM_TYPE_PPPOE_PROTO_ID,
/**
* Matches Network service header (NSH).
* See struct rte_flow_item_nsh.
*
*/
RTE_FLOW_ITEM_TYPE_NSH,
};
/**
@ -1307,6 +1314,38 @@ struct rte_flow_item_mark {
uint32_t id; /**< Integer value to match against. */
};
/**
* @warning
* @b EXPERIMENTAL: this structure may change without prior notice
*
* RTE_FLOW_ITEM_TYPE_NSH
*
* Match network service header (NSH), RFC 8300
*
*/
struct rte_flow_item_nsh {
uint32_t version:2;
uint32_t oam_pkt:1;
uint32_t reserved:1;
uint32_t ttl:6;
uint32_t length:6;
uint32_t reserved1:4;
uint32_t mdtype:4;
uint32_t next_proto:8;
uint32_t spi:24;
uint32_t sindex:8;
};
/** Default mask for RTE_FLOW_ITEM_TYPE_NSH. */
#ifndef __cplusplus
static const struct rte_flow_item_nsh rte_flow_item_nsh_mask = {
.mdtype = 0xf,
.next_proto = 0xff,
.spi = 0xffffff,
.sindex = 0xff,
};
#endif
/**
* Matching pattern item definition.
*