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From: Xueming Li <xuemingl@nvidia.com>
To: Thomas Monjalon <thomas@monjalon.net>,
Ferruh Yigit <ferruh.yigit@intel.com>,
Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>,
Olivier Matz <olivier.matz@6wind.com>,
Viacheslav Ovsiienko <viacheslavo@nvidia.com>
Cc: dev@dpdk.org, xuemingl@nvidia.com, Asaf Penso <asafp@nvidia.com>
Date: Wed, 6 Jan 2021 16:17:29 +0000
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Subject: [dpdk-dev] [PATCH v2 3/9] ethdev: support sub function representor
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SubFunction is a portion of the PCI device, created on demand, a SF
netdev has its own dedicated queues(txq, rxq). A SF netdev supports
eswitch representation offload similar to existing PF and VF
representors.
To support SF representor, this patch introduces new devargs syntax:
sf#: new SF port representor/s, example: sf[0-3], sf2
Signed-off-by: Xueming Li <xuemingl@nvidia.com>
---
doc/guides/prog_guide/poll_mode_drv.rst | 1 +
lib/librte_ethdev/ethdev_private.c | 14 +++++++++++---
lib/librte_ethdev/rte_ethdev_driver.h | 1 +
3 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/doc/guides/prog_guide/poll_mode_drv.rst b/doc/guides/prog_guide/poll_mode_drv.rst
index 979a2bab9d..831d620c8d 100644
--- a/doc/guides/prog_guide/poll_mode_drv.rst
+++ b/doc/guides/prog_guide/poll_mode_drv.rst
@@ -377,6 +377,7 @@ parameters to those ports.
-a DBDF,representor=vf0
-a DBDF,representor=vf[0,4,6,9]
-a DBDF,representor=vf[0-31]
+ -a DBDF,representor=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 54f565ca37..551a43738a 100644
--- a/lib/librte_ethdev/ethdev_private.c
+++ b/lib/librte_ethdev/ethdev_private.c
@@ -96,6 +96,7 @@ 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
*/
int
rte_eth_devargs_parse_representor_ports(char *str, void *data)
@@ -103,10 +104,17 @@ rte_eth_devargs_parse_representor_ports(char *str, void *data)
struct rte_eth_devargs *eth_da = data;
int ret;
- /* Parse vf# or number # alone implies VF */
- eth_da->type = RTE_ETH_REPRESENTOR_VF;
- if (str[0] == 'v' && str[1] == 'f')
+ eth_da->type = RTE_ETH_REPRESENTOR_NONE;
+ /* Parse vf# and sf#, number # alone implies VF */
+ if (str[0] == 'v' && str[1] == 'f') {
+ eth_da->type = RTE_ETH_REPRESENTOR_VF;
str += 2;
+ } else if (str[0] == 's' && str[1] == 'f') {
+ eth_da->type = RTE_ETH_REPRESENTOR_SF;
+ str += 2;
+ } else {
+ eth_da->type = RTE_ETH_REPRESENTOR_VF;
+ }
ret = rte_eth_devargs_process_list(str, eth_da->representor_ports,
ð_da->nb_representor_ports, RTE_MAX_ETHPORTS);
if (ret < 0)
diff --git a/lib/librte_ethdev/rte_ethdev_driver.h b/lib/librte_ethdev/rte_ethdev_driver.h
index b66a955b18..086d64223a 100644
--- a/lib/librte_ethdev/rte_ethdev_driver.h
+++ b/lib/librte_ethdev/rte_ethdev_driver.h
@@ -1197,6 +1197,7 @@ rte_eth_switch_domain_free(uint16_t domain_id);
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 */
};
/** Generic Ethernet device arguments */
--
2.25.1