On 11/19, Qi Zhang wrote:
>Since not all data paths support flow mark, the driver needs
>a hint from application to select the correct data path if
>flow mark is required. The patch introduces a devarg
>"flow-mark-support" as a workaround solution, since a standard
>way is still ongoing.
>
>Signed-off-by: Qi Zhang <qi.z.zh...@intel.com>
>Acked-by: Qiming Yang <qiming.y...@intel.com>
>---
>
>v4:
>- remove debug code, fix typos
>
>v3:
>- add "experimental notification" in ice.rst
>
>v2:
>- fix typos
>
> doc/guides/nics/ice.rst | 12 ++++++++++++
> drivers/net/ice/ice_ethdev.c | 12 +++++++++++-
> drivers/net/ice/ice_ethdev.h | 1 +
> drivers/net/ice/ice_rxtx_vec_common.h | 6 ++++++
> 4 files changed, 30 insertions(+), 1 deletion(-)
>
>diff --git a/doc/guides/nics/ice.rst b/doc/guides/nics/ice.rst
>index 7ff33d7f0..652620d16 100644
>--- a/doc/guides/nics/ice.rst
>+++ b/doc/guides/nics/ice.rst
>@@ -98,6 +98,18 @@ Runtime Config Options
>
> -w 80:00.0,pipeline-mode-support=1
>
>+- ``Flow Mark Support`` (default ``0``)
>+
>+ This is a hint to the driver to select the data path that supports flow
>mark extraction
>+ by default.
>+ NOTE: This is an experimental devarg, it will be removed when any of below
>conditions
>+ is ready.
>+ 1) all data paths support flow mark (currently vPMD does not)
>+ 2) a new offload like RTE_DEV_RX_OFFLOAD_FLOW_MARK be introduced as a
>standard way to hint.
>+ Example::
>+
>+ -w 80:00.0,flow-mark-support=1
>+
> - ``Protocol extraction for per queue``
>
> Configure the RX queues to do protocol extraction into mbuf for protocol
>diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
>index ecfc6c9e8..de189daba 100644
>--- a/drivers/net/ice/ice_ethdev.c
>+++ b/drivers/net/ice/ice_ethdev.c
>@@ -23,11 +23,13 @@
> /* devargs */
> #define ICE_SAFE_MODE_SUPPORT_ARG "safe-mode-support"
> #define ICE_PIPELINE_MODE_SUPPORT_ARG "pipeline-mode-support"
>+#define ICE_FLOW_MARK_SUPPORT_ARG "flow-mark-support"
> #define ICE_PROTO_XTR_ARG "proto_xtr"
>
> static const char * const ice_valid_args[] = {
> ICE_SAFE_MODE_SUPPORT_ARG,
> ICE_PIPELINE_MODE_SUPPORT_ARG,
>+ ICE_FLOW_MARK_SUPPORT_ARG,
> ICE_PROTO_XTR_ARG,
> NULL
> };
>@@ -1987,6 +1989,13 @@ static int ice_parse_devargs(struct rte_eth_dev *dev)
>
> ret = rte_kvargs_process(kvlist, ICE_PIPELINE_MODE_SUPPORT_ARG,
> &parse_bool, &ad->devargs.pipe_mode_support);
>+ if (ret)
>+ goto bail;
>+
>+ ret = rte_kvargs_process(kvlist, ICE_FLOW_MARK_SUPPORT_ARG,
>+ &parse_bool, &ad->devargs.flow_mark_support);
>+ if (ret)
>+ goto bail;
>
> bail:
> rte_kvargs_free(kvlist);
>@@ -4562,7 +4571,8 @@ RTE_PMD_REGISTER_KMOD_DEP(net_ice, "* igb_uio |
>uio_pci_generic | vfio-pci");
> RTE_PMD_REGISTER_PARAM_STRING(net_ice,
> ICE_PROTO_XTR_ARG
> "=[queue:]<vlan|ipv4|ipv6|ipv6_flow|tcp>"
> ICE_SAFE_MODE_SUPPORT_ARG "=<0|1>"
>- ICE_PIPELINE_MODE_SUPPORT_ARG "=<0|1>");
>+ ICE_PIPELINE_MODE_SUPPORT_ARG "=<0|1>"
>+ ICE_FLOW_MARK_SUPPORT_ARG "=<0|1>");
>
> RTE_INIT(ice_init_log)
> {
>diff --git a/drivers/net/ice/ice_ethdev.h b/drivers/net/ice/ice_ethdev.h
>index 510f6869d..f2186e1ff 100644
>--- a/drivers/net/ice/ice_ethdev.h
>+++ b/drivers/net/ice/ice_ethdev.h
>@@ -391,6 +391,7 @@ struct ice_devargs {
> int safe_mode_support;
> uint8_t proto_xtr_dflt;
> int pipe_mode_support;
>+ int flow_mark_support;
> uint8_t proto_xtr[ICE_MAX_QUEUE_NUM];
> };
>
>diff --git a/drivers/net/ice/ice_rxtx_vec_common.h
>b/drivers/net/ice/ice_rxtx_vec_common.h
>index 080ca4175..5e6f89642 100644
>--- a/drivers/net/ice/ice_rxtx_vec_common.h
>+++ b/drivers/net/ice/ice_rxtx_vec_common.h
>@@ -268,6 +268,12 @@ ice_rx_vec_dev_check_default(struct rte_eth_dev *dev)
> {
> int i;
> struct ice_rx_queue *rxq;
>+ struct ice_adapter *ad =
>+ ICE_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
>+
>+ /* vPMD does not support flow mark. */
>+ if (ad->devargs.flow_mark_support)
>+ return -1;
>
> for (i = 0; i < dev->data->nb_rx_queues; i++) {
> rxq = dev->data->rx_queues[i];
>--
>2.13.6
>
Applied to dpdk-next-net-intel, Thanks.
