[dpdk-dev] [PATCH v4 4/9] ethdev: support sub function representor
From: Xueming Li <hidden>
Date: 2021-01-18 11:18:28
Subsystem:
library code, the rest · Maintainers:
Andrew Morton, Linus Torvalds
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, examples: representor=sf0 - single SubFunction representor representor=sf[1,3,5] - single list representor=sf[0-3], - single range representor=sf[0,2-6,8,10-12] - list with singles and ranges Signed-off-by: Xueming Li <redacted> Acked-by: Viacheslav Ovsiienko <redacted> --- doc/guides/prog_guide/poll_mode_drv.rst | 4 ++++ lib/librte_ethdev/ethdev_private.c | 11 +++++++++-- 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 0117c2af07..86e5867f1b 100644
--- a/doc/guides/prog_guide/poll_mode_drv.rst
+++ b/doc/guides/prog_guide/poll_mode_drv.rst@@ -378,6 +378,10 @@ parameters to those ports. -a DBDF,representor=vf[0,4,6,9] -a DBDF,representor=vf[0-31] -a DBDF,representor=vf[0,2-4,7,9-11] + -a DBDF,representor=sf0 + -a DBDF,representor=sf[1,3,5] + -a DBDF,representor=sf[0-1023] + -a DBDF,representor=sf[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 ee60b1259a..170b3ef067 100644
--- a/lib/librte_ethdev/ethdev_private.c
+++ b/lib/librte_ethdev/ethdev_private.c@@ -109,15 +109,22 @@ 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 */ int 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') + 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; + } str = rte_eth_devargs_process_list(str, eth_da->representor_ports, ð_da->nb_representor_ports, RTE_MAX_ETHPORTS); if (str == NULL)
--
2.25.1