[dpdk-dev] [PATCH v5 3/9] ethdev: support new VF representor syntax

[Xueming Li]

Current VF representor syntax:
 representor=2          - single representor
 representor=[0-3]      - single range

To prepare for more representor types, this patch adds compatible VF
representor devargs syntax:

vf#:
 representor=vf2          - single representor
 representor=vf[1,3,5]    - single list
 representor=vf[0-3]      - single range
 representor=vf[0,1,4-7]  - list with singles and range

For backwards compatibility, representor "#" is interpreted as "vf#".

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 | 7 ++++---
 lib/librte_ethdev/ethdev_private.c      | 5 ++++-
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/doc/guides/prog_guide/poll_mode_drv.rst 
b/doc/guides/prog_guide/poll_mode_drv.rst
index 239ec820ea..0117c2af07 100644
--- a/doc/guides/prog_guide/poll_mode_drv.rst
+++ b/doc/guides/prog_guide/poll_mode_drv.rst
@@ -374,9 +374,10 @@ parameters to those ports.
   this argument allows user to specify which switch ports to enable port
   representors for.::
 
-   -a DBDF,representor=0
-   -a DBDF,representor=[0,4,6,9]
-   -a DBDF,representor=[0-31]
+   -a DBDF,representor=vf0
+   -a DBDF,representor=vf[0,4,6,9]
+   -a DBDF,representor=vf[0-31]
+   -a DBDF,representor=vf[0,2-4,7,9-11]
 
 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 e87636f665..20e48a48be 100644
--- a/lib/librte_ethdev/ethdev_private.c
+++ b/lib/librte_ethdev/ethdev_private.c
@@ -119,7 +119,8 @@ rte_eth_devargs_process_list(char *str, uint16_t *list, 
uint16_t *len_list,
  * Parse representor ports from a single value or lists.
  *
  * Representor format:
- *   #: range or single number of VF representor
+ *   #: range or single number of VF representor - legacy
+ *   vf#: VF port representor/s
  *
  * Examples of #:
  *  2               - single
@@ -132,6 +133,8 @@ rte_eth_devargs_parse_representor_ports(char *str, void 
*data)
        struct rte_eth_devargs *eth_da = data;
 
        eth_da->type = RTE_ETH_REPRESENTOR_VF;
+       if (str[0] == 'v' && str[1] == 'f')
+               str += 2;
        str = rte_eth_devargs_process_list(str, eth_da->representor_ports,
                &eth_da->nb_representor_ports, RTE_MAX_ETHPORTS);
        if (str == NULL)
-- 
2.25.1