[dpdk-dev] [PATCH v3 4/9] ethdev: support PF index in representor

[Xueming Li <xuemingl@nvidia.com>]

To support representor in bonding, this patch introduces 'pf' section
to representor devargs syntax:

[pf#]vf#: VF port representor/s, example: vf3, pf0vf3
[pf#]sf#: SF port representor/s, example: sf2, pf1sf2

pf# is optional for SF and VF representor, indicates owner PF device of
SF or VF.

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
---
 doc/guides/prog_guide/poll_mode_drv.rst |  1 +
 lib/librte_ethdev/ethdev_private.c      | 15 +++++++++++++--
 lib/librte_ethdev/rte_ethdev_driver.h   |  1 +
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/doc/guides/prog_guide/poll_mode_drv.rst b/doc/guides/prog_guide/poll_mode_drv.rst
index 831d620c8d..87f23c4f49 100644
--- a/doc/guides/prog_guide/poll_mode_drv.rst
+++ b/doc/guides/prog_guide/poll_mode_drv.rst
@@ -378,6 +378,7 @@ parameters to those ports.
    -a DBDF,representor=vf[0,4,6,9]
    -a DBDF,representor=vf[0-31]
    -a DBDF,representor=sf[0-1023]
+   -a DBDF,representor=pf[0-1]sf[0-1023]
 
 Note: PMDs are not required to support the standard device arguments and users
 should consult the relevant PMD documentation to see support devargs.
diff --git a/lib/librte_ethdev/ethdev_private.c b/lib/librte_ethdev/ethdev_private.c
index 551a43738a..ccc638ec49 100644
--- a/lib/librte_ethdev/ethdev_private.c
+++ b/lib/librte_ethdev/ethdev_private.c
@@ -95,8 +95,8 @@ rte_eth_devargs_process_list(char *str, uint16_t *list, uint16_t *len_list,
 /*
  * representor format:
  *   #: range or single number of VF representor - legacy
- *   vf#: VF port representor/s
- *   sf#: SF port representor/s
+ *   [pf#]vf#: VF port representor/s
+ *   [pf#]sf#: SF port representor/s
  */
 int
 rte_eth_devargs_parse_representor_ports(char *str, void *data)
@@ -105,6 +105,16 @@ rte_eth_devargs_parse_representor_ports(char *str, void *data)
 	int ret;
 
 	eth_da->type = RTE_ETH_REPRESENTOR_NONE;
+	/* Parse pf# */
+	if (str[0] == 'p' && str[1] == 'f') {
+		eth_da->type = RTE_ETH_REPRESENTOR_PF;
+		str += 2;
+		ret = rte_eth_devargs_process_list(str, eth_da->ports,
+				&eth_da->nb_ports, RTE_MAX_ETHPORTS);
+		if (ret < 0)
+			goto err;
+		str += ret;
+	}
 	/* Parse vf# and sf#, number # alone implies VF */
 	if (str[0] == 'v'  && str[1] == 'f') {
 		eth_da->type = RTE_ETH_REPRESENTOR_VF;
@@ -117,6 +127,7 @@ rte_eth_devargs_parse_representor_ports(char *str, void *data)
 	}
 	ret = rte_eth_devargs_process_list(str, eth_da->representor_ports,
 		&eth_da->nb_representor_ports, RTE_MAX_ETHPORTS);
+err:
 	if (ret < 0)
 		RTE_LOG(ERR, EAL, "wrong representor format: %s\n", str);
 	return ret < 0 ? ret : 0;
diff --git a/lib/librte_ethdev/rte_ethdev_driver.h b/lib/librte_ethdev/rte_ethdev_driver.h
index 086d64223a..edb000cbd4 100644
--- a/lib/librte_ethdev/rte_ethdev_driver.h
+++ b/lib/librte_ethdev/rte_ethdev_driver.h
@@ -1198,6 +1198,7 @@ enum rte_eth_representor_type {
 	RTE_ETH_REPRESENTOR_NONE, /* not a representor */
 	RTE_ETH_REPRESENTOR_VF,   /* representor of VF */
 	RTE_ETH_REPRESENTOR_SF,   /* representor of SF */
+	RTE_ETH_REPRESENTOR_PF,   /* representor of host PF */
 };
 
 /** Generic Ethernet device arguments  */
-- 
2.25.1