[dpdk-dev] [PATCH 1/2] ethdev: add flow action type update as an offload
Andrew Rybchenko
arybchenko at solarflare.com
Mon Oct 28 12:53:47 CET 2019
Hi Ori,
On 10/28/19 1:50 PM, Ori Kam wrote:
> Hi Pavan,
>
> Sorry for jumping in late.
>
> I don't understand why we need this feature. If the user didn't set any flow with MARK
> then the user doesn't need to check it.
There is pretty long discussion on the topic already, please, read [1].
[1]
http://inbox.dpdk.org/dev/3251fc00-7598-1c4f-fc2a-380065f0a435@solarflare.com/
> Also it breaks compatibility.
Yes, there is a deprecation notice for it.
> If my understanding is correct the MARK field is going to be moved to dynamic field, and this
> will be way to control the use of MARK.
Yes and I think the offload should used to request dynamic
field register. Similar to timestamp in dynamic mbuf examples.
Application requests Rx timestamp offload, PMD registers dynamic
filed.
> Other option is inside the PMD if one flow uses mark only than copy the mark to mbuf.
>
> Please also not that we have deprecation notice on the FDIR.
>
> Thanks,
> Ori
>
>
>
>> -----Original Message-----
>> From: dev <dev-bounces at dpdk.org> On Behalf Of pbhagavatula at marvell.com
>> Sent: Friday, October 25, 2019 6:22 PM
>> To: ferruh.yigit at intel.com; arybchenko at solarflare.com; jerinj at marvell.com;
>> John McNamara <john.mcnamara at intel.com>; Marko Kovacevic
>> <marko.kovacevic at intel.com>; Thomas Monjalon <thomas at monjalon.net>;
>> Adrien Mazarguil <adrien.mazarguil at 6wind.com>
>> Cc: dev at dpdk.org; Pavan Nikhilesh <pbhagavatula at marvell.com>
>> Subject: [dpdk-dev] [PATCH 1/2] ethdev: add flow action type update as an
>> offload
>>
>> From: Pavan Nikhilesh <pbhagavatula at marvell.com>
>>
>> Add new Rx offload flag `DEV_RX_OFFLOAD_FLOW_MARK` that can be used to
>> enable/disable PMDs write to `rte_mbuf::hash::fdir::hi` and
>> `rte_mbuf::ol_flags` when flow actions `RTE_FLOW_ACTION_MARK` and
>> `RTE_FLOW_ACTION_FLAG` are enabled.
>>
>> PMDs notify the validity of `rte_mbuf::hash:fdir::hi` to the applcation
>> by enabling `PKT_RX_FDIR_ID` flag in `rte_mbuf::ol_flags`.
>>
>> Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
>> Reviewed-by: Andrew Rybchenko <arybchenko at solarflare.com>
>> ---
>> doc/guides/nics/features.rst | 12 ++++++++++++
>> doc/guides/rel_notes/release_19_11.rst | 9 +++++++++
>> lib/librte_ethdev/rte_ethdev.c | 1 +
>> lib/librte_ethdev/rte_ethdev.h | 1 +
>> lib/librte_ethdev/rte_flow.h | 6 ++++--
>> 5 files changed, 27 insertions(+), 2 deletions(-)
>>
>> diff --git a/doc/guides/nics/features.rst b/doc/guides/nics/features.rst
>> index d96696801..0d8d08c18 100644
>> --- a/doc/guides/nics/features.rst
>> +++ b/doc/guides/nics/features.rst
>> @@ -588,6 +588,18 @@ Supports packet type parsing and returns a list of
>> supported types.
>> * **[related] API**: ``rte_eth_dev_get_supported_ptypes()``.
>>
>>
>> +.. _nic_features_flow_flag_mark:
>> +
>> +Flow flag/mark update
>> +---------------------
>> +
>> +Supports flow action type update to ``mbuf.ol_flags`` and ``mbuf.hash.fdir.hi``.
>> +
>> +* **[uses] rte_eth_rxconf,rte_eth_rxmode**:
>> ``offloads:DEV_RX_OFFLOAD_FLOW_MARK``.
>> +* **[provides] mbuf**: ``mbuf.ol_flags:PKT_RX_FDIR``,
>> ``mbuf.ol_flags:PKT_RX_FDIR_ID;``,
>> + ``mbuf.hash.fdir.hi``
>> +
>> +
>> .. _nic_features_timesync:
>>
>> Timesync
>> diff --git a/doc/guides/rel_notes/release_19_11.rst
>> b/doc/guides/rel_notes/release_19_11.rst
>> index faf69b0d9..8593fea0e 100644
>> --- a/doc/guides/rel_notes/release_19_11.rst
>> +++ b/doc/guides/rel_notes/release_19_11.rst
>> @@ -185,6 +185,15 @@ New Features
>> * Added a console command to testpmd app, ``show port (port_id) ptypes``
>> which
>> gives ability to print port supported ptypes in different protocol layers.
>>
>> +* **Added Rx offload flag to enable or disable flow action type update**
>> +
>> + * Add new Rx offload flag `DEV_RX_OFFLOAD_FLOW_MARK` that can be
>> used to
>> + enable/disable PMDs write to `rte_mbuf::hash::fdir::hi` and
>> + `rte_mbuf::ol_flags` when flow actions `RTE_FLOW_ACTION_MARK` and
>> + `RTE_FLOW_ACTION_FLAG` are enabled.
>> + * PMDs notify the validity of `rte_mbuf::hash:fdir::hi` to the application
>> + by enabling `PKT_RX_FDIR_ID` flag in `rte_mbuf::ol_flags`.
>> +
>>
>> Removed Items
>> -------------
>> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
>> index 7743205d3..f70065043 100644
>> --- a/lib/librte_ethdev/rte_ethdev.c
>> +++ b/lib/librte_ethdev/rte_ethdev.c
>> @@ -129,6 +129,7 @@ static const struct {
>> RTE_RX_OFFLOAD_BIT2STR(KEEP_CRC),
>> RTE_RX_OFFLOAD_BIT2STR(SCTP_CKSUM),
>> RTE_RX_OFFLOAD_BIT2STR(OUTER_UDP_CKSUM),
>> + RTE_RX_OFFLOAD_BIT2STR(FLOW_MARK),
>> };
>>
>> #undef RTE_RX_OFFLOAD_BIT2STR
>> diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
>> index c36c1b631..c4e626da7 100644
>> --- a/lib/librte_ethdev/rte_ethdev.h
>> +++ b/lib/librte_ethdev/rte_ethdev.h
>> @@ -1048,6 +1048,7 @@ struct rte_eth_conf {
>> #define DEV_RX_OFFLOAD_KEEP_CRC 0x00010000
>> #define DEV_RX_OFFLOAD_SCTP_CKSUM 0x00020000
>> #define DEV_RX_OFFLOAD_OUTER_UDP_CKSUM 0x00040000
>> +#define DEV_RX_OFFLOAD_FLOW_MARK 0x00100000
>>
>> #define DEV_RX_OFFLOAD_CHECKSUM (DEV_RX_OFFLOAD_IPV4_CKSUM | \
>> DEV_RX_OFFLOAD_UDP_CKSUM | \
>> diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h
>> index 4fee10559..6698640fb 100644
>> --- a/lib/librte_ethdev/rte_flow.h
>> +++ b/lib/librte_ethdev/rte_flow.h
>> @@ -1538,7 +1538,8 @@ enum rte_flow_action_type {
>>
>> /**
>> * Attaches an integer value to packets and sets PKT_RX_FDIR and
>> - * PKT_RX_FDIR_ID mbuf flags.
>> + * PKT_RX_FDIR_ID mbuf flags when
>> + * `rx_mode:offloads:DEV_RX_OFFLOAD_FLOW_MARK` is enabled.
>> *
>> * See struct rte_flow_action_mark.
>> */
>> @@ -1546,7 +1547,8 @@ enum rte_flow_action_type {
>>
>> /**
>> * Flags packets. Similar to MARK without a specific value; only
>> - * sets the PKT_RX_FDIR mbuf flag.
>> + * sets the PKT_RX_FDIR mbuf flag when
>> + * `rx_mode:offloads:DEV_RX_OFFLOAD_FLOW_MARK` is enabled.
>> *
>> * No associated configuration structure.
>> */
>> --
>> 2.17.1
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