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

[Xueming Li]

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 <xuemi...@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