[dpdk-dev] [PATCH v5 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 <xuemi...@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viachesl...@nvidia.com>
Acked-by: Thomas Monjalon <tho...@monjalon.net>
---
 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 d513f035d0..b9fdbd0f72 100644
--- a/lib/librte_ethdev/ethdev_private.c
+++ b/lib/librte_ethdev/ethdev_private.c
@@ -120,8 +120,8 @@ 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
  *
  * Examples of #:
  *  2               - single
@@ -133,6 +133,14 @@ 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;
@@ -144,6 +152,7 @@ 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