[dpdk-dev] [PATCH v4 5/9] ethdev: support PF index in representor

[Xueming Li]

With Kernel bonding, multiple underlying PFs are bonded, VFs come
from different PF, need to identify representor of VFs unambiguously by
adding PF index.

This patch introduces optional 'pf' section to representor devargs
syntax, examples:
 representor=pf0vf0             - single VF representor
 representor=pf[0-1]sf[0-1023]  - SF representors from 2 PFs


Signed-off-by: Xueming Li <xuemingl at nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
---
 doc/guides/prog_guide/poll_mode_drv.rst |  2 ++
 lib/librte_ethdev/ethdev_private.c      | 13 +++++++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/doc/guides/prog_guide/poll_mode_drv.rst b/doc/guides/prog_guide/poll_mode_drv.rst
index 86e5867f1b..b2147aad30 100644
--- a/doc/guides/prog_guide/poll_mode_drv.rst
+++ b/doc/guides/prog_guide/poll_mode_drv.rst
@@ -382,6 +382,8 @@ parameters to those ports.
    -a DBDF,representor=sf[1,3,5]
    -a DBDF,representor=sf[0-1023]
    -a DBDF,representor=sf[0,2-4,7,9-11]
+   -a DBDF,representor=pf1vf0
+   -a DBDF,representor=pf[0-1]sf[0-127]
 
 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 170b3ef067..f81423ceb8 100644
--- a/lib/librte_ethdev/ethdev_private.c
+++ b/lib/librte_ethdev/ethdev_private.c
@@ -108,14 +108,22 @@ 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)
 {
 	struct rte_eth_devargs *eth_da = data;
 
+	if (str[0] == 'p' && str[1] == 'f') {
+		eth_da->type = RTE_ETH_REPRESENTOR_PF;
+		str += 2;
+		str = rte_eth_devargs_process_list(str, eth_da->ports,
+				&eth_da->nb_ports, RTE_MAX_ETHPORTS);
+		if (str == NULL)
+			goto err;
+	}
 	if (str[0] == 'v' && str[1] == 'f') {
 		eth_da->type = RTE_ETH_REPRESENTOR_VF;
 		str += 2;
@@ -127,6 +135,7 @@ rte_eth_devargs_parse_representor_ports(char *str, void *data)
 	}
 	str = rte_eth_devargs_process_list(str, eth_da->representor_ports,
 		&eth_da->nb_representor_ports, RTE_MAX_ETHPORTS);
+err:
 	if (str == NULL)
 		RTE_LOG(ERR, EAL, "wrong representor format: %s\n", str);
 	return str == NULL ? -1 : 0;
-- 
2.25.1