Hi Sean, Please add this feature to the release note.
> -----Original Message----- > From: Sean Zhang (Networking SW) <xiazh...@nvidia.com> > Sent: Wednesday, January 26, 2022 10:44 AM > Subject: [v1 2/4] ethdev: support GRE optional fields > > Add flow pattern items and header format for matching optional fields > (checksum/key/sequence) in GRE header. And the flags in gre item should > be correspondingly set with the new added items. > > Signed-off-by: Sean Zhang <xiazh...@nvidia.com> > --- > doc/guides/prog_guide/rte_flow.rst | 17 +++++++++++++++++ > lib/ethdev/rte_flow.c | 1 + > lib/ethdev/rte_flow.h | 19 +++++++++++++++++++ > 3 files changed, 37 insertions(+) > > diff --git a/doc/guides/prog_guide/rte_flow.rst > b/doc/guides/prog_guide/rte_flow.rst > index b4aa9c4..0e47501 100644 > --- a/doc/guides/prog_guide/rte_flow.rst > +++ b/doc/guides/prog_guide/rte_flow.rst > @@ -1106,6 +1106,7 @@ Matches a GRE header. > > Item: ``GRE_KEY`` > ^^^^^^^^^^^^^^^^^ > +This action is deprecated. Consider `Item: GRE_OPTION`. > > Matches a GRE key field. > This should be preceded by item ``GRE``. > @@ -1113,6 +1114,22 @@ This should be preceded by item ``GRE``. > - Value to be matched is a big-endian 32 bit integer. > - When this item present it implicitly match K bit in default mask as "1" > > +Item: ``GRE_OPTION`` > +^^^^^^^^^^^^^^^^^^^^ > + > +Matches a GRE optional fields (checksum/key/sequence). > +This should be preceded by item ``GRE``. > + > +- ``checksum``: checksum. > +- ``key``: key. > +- ``sequence``: sequence. > +- The items in GRE_OPTION do not change bit flags(c_bit/k_bit/s_bit) in GRE > + item. The bit flags need be set with GRE item by application. When the > items > + present, the corresponding bits in GRE spec and mask should be set "1" by > + application, it means to match specified value of the fields. When the > items > + no present, but the corresponding bits in GRE spec and mask is "1", it > means > + to match any value of the fields. > + > Item: ``FUZZY`` > ^^^^^^^^^^^^^^^ > > diff --git a/lib/ethdev/rte_flow.c b/lib/ethdev/rte_flow.c > index a93f68a..7f93900 100644 > --- a/lib/ethdev/rte_flow.c > +++ b/lib/ethdev/rte_flow.c > @@ -139,6 +139,7 @@ struct rte_flow_desc_data { > MK_FLOW_ITEM(META, sizeof(struct rte_flow_item_meta)), > MK_FLOW_ITEM(TAG, sizeof(struct rte_flow_item_tag)), > MK_FLOW_ITEM(GRE_KEY, sizeof(rte_be32_t)), > + MK_FLOW_ITEM(GRE_OPTION, sizeof(struct rte_flow_item_gre_opt)), > MK_FLOW_ITEM(GTP_PSC, sizeof(struct rte_flow_item_gtp_psc)), > MK_FLOW_ITEM(PPPOES, sizeof(struct rte_flow_item_pppoe)), > MK_FLOW_ITEM(PPPOED, sizeof(struct rte_flow_item_pppoe)), > diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h > index 1031fb2..db58b47 100644 > --- a/lib/ethdev/rte_flow.h > +++ b/lib/ethdev/rte_flow.h > @@ -37,6 +37,7 @@ > #include <rte_gtp.h> > #include <rte_l2tpv2.h> > #include <rte_ppp.h> > +#include <rte_gre.h> > > #ifdef __cplusplus > extern "C" { > @@ -660,6 +661,13 @@ enum rte_flow_item_type { > * See struct rte_flow_item_ppp. > */ > RTE_FLOW_ITEM_TYPE_PPP, > + > + /** > + * Matches GRE optional fields. > + * > + * See struct rte_flow_item_gre_opt. > + */ > + RTE_FLOW_ITEM_TYPE_GRE_OPTION, > }; > > /** > @@ -1196,6 +1204,17 @@ struct rte_flow_item_gre { > #endif > > /** > + * RTE_FLOW_ITEM_TYPE_GRE_OPTION. > + * > + * Matches GRE optional fields in header. > + */ > +struct rte_flow_item_gre_opt { > + struct rte_gre_hdr_opt_checksum checksum; > + struct rte_gre_hdr_opt_key key; > + struct rte_gre_hdr_opt_sequence sequence; > +}; > + > +/** > * RTE_FLOW_ITEM_TYPE_FUZZY > * > * Fuzzy pattern match, expect faster than default. > -- > 1.8.3.1 Best, Ori