Re: [Intel-wired-lan] [PATCH net-next v4] ethtool: ice: Support for RSS settings to GTP

From: takeru hayasaka
Date: Tue Jan 30 2024 - 20:08:42 EST

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Hi Marcin-san

Thank you for your review :)

> Remove "her" (sorry for missing it last time).

Understood :) I will correct it in the next patch.

> This doesn't seem to be used anywhere.

The parameter definition was something I included where I was
enumerating. Indeed, it's not being used anywhere, so I will remove
it.

> All headers have two blank lines before them, so don't remove this newline.

Got it.

> Two braces above: looks like ICE_FLOW_HASH_GTP_U_IPV4_TEID and > ICE_FLOW_HASH_GTP_IPV4_TEID should be swapped? > Ditto, ICE_FLOW_HASH_GTP_U_IPV6_TEID and ICE_FLOW_HASH_GTP_IPV6_TEID seem > to be incorrectly placed.

That's a good point!Thank you.
This was a mistake on my part.
It should be:
ICE_FLOW_HASH_GTP_U_IPV(4|6)_TEID -> ICE_FLOW_HASH_GTP_C_IPV(4|6)_TEID
(At the same time, I will change ICE_FLOW_HASH_GTP_TEID to
ICE_FLOW_HASH_GTP_C_TEID, which is clearer.)
ICE_FLOW_HASH_GTP_IPV(4|6)_TEID -> ICE_FLOW_HASH_GTP_U_IPV(4|6)_TEID

> Again, missing space before (

Sorry, I forgot to fix that. I will make sure it's corrected in the next one.

Thanks,
Takeru
2024年1月30日(火) 23:41 Marcin Szycik <marcin.szycik@xxxxxxxxxxxxxxx>:

>
>
>
> On 30.01.2024 10:53, Takeru Hayasaka wrote:
> > This is a patch that enables RSS functionality for GTP packets using ethtool.
> >
> > A user can include her TEID and make RSS work for GTP-U over IPv4 by doing the
>
> Remove "her" (sorry for missing it last time).
>
> > following:`ethtool -N ens3 rx-flow-hash gtpu4 sde`
> >
> > In addition to gtpu(4|6), we now support gtpc(4|6),gtpc(4|6)t,gtpu(4|6)e,
> > gtpu(4|6)u, and gtpu(4|6)d.
> >
> > gtpc(4|6): Used for GTP-C in IPv4 and IPv6, where the GTP header format does
> > not include a TEID.
> > gtpc(4|6)t: Used for GTP-C in IPv4 and IPv6, with a GTP header format that
> > includes a TEID.
> > gtpu(4|6): Used for GTP-U in both IPv4 and IPv6 scenarios.
> > gtpu(4|6)e: Used for GTP-U with extended headers in both IPv4 and IPv6.
> > gtpu(4|6)u: Used when the PSC (PDU session container) in the GTP-U extended
> > header includes Uplink, applicable to both IPv4 and IPv6.
> > gtpu(4|6)d: Used when the PSC in the GTP-U extended header includes Downlink,
> > for both IPv4 and IPv6.
>
> I'd still add a short note here that all gtpu have TEID.
>
> > GTP generates a flow that includes an ID called TEID to identify the tunnel.
> > This tunnel is created for each UE (User Equipment).By performing RSS based on
> > this flow, it is possible to apply RSS for each communication unit from the UE.
> > Without this, RSS would only be effective within the range of IP addresses. For
> > instance, the PGW can only perform RSS within the IP range of the SGW.
> > Problematic from a load distribution perspective, especially if there's a bias
> > in the terminals connected to a particular base station.This case can be
> > solved by using this patch.
> >
> > Signed-off-by: Takeru Hayasaka <hayatake396@xxxxxxxxx>
> > ---
> >
> > v2->v3: Based on Harald-san's review, I added documentation and comments to
> > ethtool.h and ice.rst.
> > v3->v4: Based on Marcin-san's review, I added the missing code for GTPC and
> > GTPC_TEID, and revised the documentation and comments.
> >
> >
> > .../device_drivers/ethernet/intel/ice.rst | 23 ++++--
> > drivers/net/ethernet/intel/ice/ice_ethtool.c | 82 +++++++++++++++++++
> > drivers/net/ethernet/intel/ice/ice_flow.h | 22 +++++
> > drivers/net/ethernet/intel/ice/ice_lib.c | 37 +++++++++
> > include/uapi/linux/ethtool.h | 48 +++++++++++
> > 5 files changed, 207 insertions(+), 5 deletions(-)
> >
> > diff --git a/Documentation/networking/device_drivers/ethernet/intel/icerst b/Documentation/networking/device_drivers/ethernet/intel/ice.rst
> > index 5038e54586af..6f48688940c4 100644
> > --- a/Documentation/networking/device_drivers/ethernet/intel/ice.rst
> > +++ b/Documentation/networking/device_drivers/ethernet/intel/ice.rst
> > @@ -368,16 +368,29 @@ more options for Receive Side Scaling (RSS) hash byte configuration.
> > # ethtool -N <ethX> rx-flow-hash <type> <option>
> >
> > Where <type> is:
> > - tcp4 signifying TCP over IPv4
> > - udp4 signifying UDP over IPv4
> > - tcp6 signifying TCP over IPv6
> > - udp6 signifying UDP over IPv6
> > + tcp4 signifying TCP over IPv4
> > + udp4 signifying UDP over IPv4
> > + gtpc4 signifying GTP-C over IPv4
> > + gtpc4t signifying GTP-C (include TEID) over IPv4
> > + gtpu4 signifying GTP-U over IPV4
> > + gtpu4e signifying GTP-U and Extension Header over IPV4
> > + gtpu4u signifying GTP-U PSC Uplink over IPV4
> > + gtpu4d signifying GTP-U PSC Downlink over IPV4
> > + tcp6 signifying TCP over IPv6
> > + udp6 signifying UDP over IPv6
> > + gtpc6 signifying GTP-C over IPv6
> > + gtpc6t signifying GTP-C (include TEID) over IPv6
> > + gtpu6 signifying GTP-U over IPV6
> > + gtpu6e signifying GTP-U and Extension Header over IPV6
> > + gtpu6u signifying GTP-U PSC Uplink over IPV6
> > + gtpu6d signifying GTP-U PSC Downlink over IPV6
> > +
> > And <option> is one or more of:
> > s Hash on the IP source address of the Rx packet.
> > d Hash on the IP destination address of the Rx packet.
> > f Hash on bytes 0 and 1 of the Layer 4 header of the Rx packet.
> > n Hash on bytes 2 and 3 of the Layer 4 header of the Rx packet.
> > -
>
> All headers have two blank lines before them, so don't remove this newline.
>
> > + e Hash on GTP Packet on TEID (4bytes) of the Rx packet.
> >
> > Accelerated Receive Flow Steering (aRFS)
> > ----------------------------------------
> > diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
> > index a19b06f18e40..d0e05032f464 100644
> > --- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
> > +++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
> > @@ -2486,6 +2486,24 @@ static u32 ice_parse_hdrs(struct ethtool_rxnfc *nfc)
> > case SCTP_V4_FLOW:
> > hdrs |= ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV4;
> > break;
> > + case GTPU_V4_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPU_IP | ICE_FLOW_SEG_HDR_IPV4;
> > + break;
> > + case GTPC_V4_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPC | ICE_FLOW_SEG_HDR_IPV4;
> > + break;
> > + case GTPC_TEID_V4_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPC_TEID | ICE_FLOW_SEG_HDR_IPV4;
> > + break;
> > + case GTPU_EH_V4_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPU_EH | ICE_FLOW_SEG_HDR_IPV4;
> > + break;
> > + case GTPU_UL_V4_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPU_UP | ICE_FLOW_SEG_HDR_IPV4;
> > + break;
> > + case GTPU_DL_V4_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPU_DWN | ICE_FLOW_SEG_HDR_IPV4;
> > + break;
> > case TCP_V6_FLOW:
> > hdrs |= ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV6;
> > break;
> > @@ -2495,6 +2513,24 @@ static u32 ice_parse_hdrs(struct ethtool_rxnfc *nfc)
> > case SCTP_V6_FLOW:
> > hdrs |= ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV6;
> > break;
> > + case GTPU_V6_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPU_IP | ICE_FLOW_SEG_HDR_IPV6;
> > + break;
> > + case GTPC_V6_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPC | ICE_FLOW_SEG_HDR_IPV6;
> > + break;
> > + case GTPC_TEID_V6_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPC_TEID | ICE_FLOW_SEG_HDR_IPV6;
> > + break;
> > + case GTPU_EH_V6_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPU_EH | ICE_FLOW_SEG_HDR_IPV6;
> > + break;
> > + case GTPU_UL_V6_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPU_UP | ICE_FLOW_SEG_HDR_IPV6;
> > + break;
> > + case GTPU_DL_V6_FLOW:
> > + hdrs |= ICE_FLOW_SEG_HDR_GTPU_DWN | ICE_FLOW_SEG_HDR_IPV6;
> > + break;
> > default:
> > break;
> > }
> > @@ -2518,6 +2554,12 @@ static u64 ice_parse_hash_flds(struct ethtool_rxnfc *nfc, bool symm)
> > case TCP_V4_FLOW:
> > case UDP_V4_FLOW:
> > case SCTP_V4_FLOW:
> > + case GTPU_V4_FLOW:
> > + case GTPC_V4_FLOW:
> > + case GTPC_TEID_V4_FLOW:
> > + case GTPU_EH_V4_FLOW:
> > + case GTPU_UL_V4_FLOW:
> > + case GTPU_DL_V4_FLOW:
> > if (nfc->data & RXH_IP_SRC)
> > hfld |= ICE_FLOW_HASH_FLD_IPV4_SA;
> > if (nfc->data & RXH_IP_DST)
> > @@ -2526,6 +2568,12 @@ static u64 ice_parse_hash_flds(struct ethtool_rxnfc *nfc, bool symm)
> > case TCP_V6_FLOW:
> > case UDP_V6_FLOW:
> > case SCTP_V6_FLOW:
> > + case GTPU_V6_FLOW:
> > + case GTPC_V6_FLOW:
> > + case GTPC_TEID_V6_FLOW:
> > + case GTPU_EH_V6_FLOW:
> > + case GTPU_UL_V6_FLOW:
> > + case GTPU_DL_V6_FLOW:
> > if (nfc->data & RXH_IP_SRC)
> > hfld |= ICE_FLOW_HASH_FLD_IPV6_SA;
> > if (nfc->data & RXH_IP_DST)
> > @@ -2564,6 +2612,33 @@ static u64 ice_parse_hash_flds(struct ethtool_rxnfc *nfc, bool symm)
> > }
> > }
> >
> > + if (nfc->data & RXH_GTP_TEID) {
> > + switch (nfc->flow_type) {
> > + case GTPC_TEID_V4_FLOW:
> > + case GTPC_TEID_V6_FLOW:
> > + hfld |= ICE_FLOW_HASH_FLD_GTPC_TEID;
> > + break;
> > + case GTPU_V4_FLOW:
> > + case GTPU_V6_FLOW:
> > + hfld |= ICE_FLOW_HASH_FLD_GTPU_IP_TEID;
> > + break;
> > + case GTPU_EH_V4_FLOW:
> > + case GTPU_EH_V6_FLOW:
> > + hfld |= ICE_FLOW_HASH_FLD_GTPU_EH_TEID;
> > + break;
> > + case GTPU_UL_V4_FLOW:
> > + case GTPU_UL_V6_FLOW:
> > + hfld |= ICE_FLOW_HASH_FLD_GTPU_UP_TEID;
> > + break;
> > + case GTPU_DL_V4_FLOW:
> > + case GTPU_DL_V6_FLOW:
> > + hfld |= ICE_FLOW_HASH_FLD_GTPU_DWN_TEID;
> > + break;
> > + default:
> > + break;
> > + }
> > + }
> > +
> > return hfld;
> > }
> >
> > @@ -2676,6 +2751,13 @@ ice_get_rss_hash_opt(struct ice_vsi *vsi, struct ethtool_rxnfc *nfc)
> > hash_flds & ICE_FLOW_HASH_FLD_UDP_DST_PORT ||
> > hash_flds & ICE_FLOW_HASH_FLD_SCTP_DST_PORT)
> > nfc->data |= (u64)RXH_L4_B_2_3;
> > +
> > + if (hash_flds & ICE_FLOW_HASH_FLD_GTPC_TEID ||
> > + hash_flds & ICE_FLOW_HASH_FLD_GTPU_IP_TEID ||
> > + hash_flds & ICE_FLOW_HASH_FLD_GTPU_EH_TEID ||
> > + hash_flds & ICE_FLOW_HASH_FLD_GTPU_UP_TEID ||
> > + hash_flds & ICE_FLOW_HASH_FLD_GTPU_DWN_TEID)
> > + nfc->data |= (u64)RXH_GTP_TEID;
> > }
> >
> > /**
> > diff --git a/drivers/net/ethernet/intel/ice/ice_flow.h b/drivers/net/ethernet/intel/ice/ice_flow.h
> > index ff82915ab497..9d6803d68a45 100644
> > --- a/drivers/net/ethernet/intel/ice/ice_flow.h
> > +++ b/drivers/net/ethernet/intel/ice/ice_flow.h
> > @@ -66,6 +66,20 @@
> > (ICE_FLOW_HASH_IPV6 | ICE_FLOW_HASH_GTP_U_EH_TEID | \
> > ICE_FLOW_HASH_GTP_U_EH_QFI)
> >
> > +#define ICE_FLOW_HASH_GTP_U_UP \
> > + (BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_UP_TEID))
> > +#define ICE_FLOW_HASH_GTP_U_DWN \
> > + (BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_DWN_TEID))
> > +
> > +#define ICE_FLOW_HASH_GTP_U_IPV4_UP \
> > + (ICE_FLOW_HASH_IPV4 | ICE_FLOW_HASH_GTP_U_UP)
> > +#define ICE_FLOW_HASH_GTP_U_IPV6_UP \
> > + (ICE_FLOW_HASH_IPV6 | ICE_FLOW_HASH_GTP_U_UP)
> > +#define ICE_FLOW_HASH_GTP_U_IPV4_DWN \
> > + (ICE_FLOW_HASH_IPV4 | ICE_FLOW_HASH_GTP_U_DWN)
> > +#define ICE_FLOW_HASH_GTP_U_IPV6_DWN \
> > + (ICE_FLOW_HASH_IPV6 | ICE_FLOW_HASH_GTP_U_DWN)
> > +
> > #define ICE_FLOW_HASH_PPPOE_SESS_ID \
> > (BIT_ULL(ICE_FLOW_FIELD_IDX_PPPOE_SESS_ID))
> >
> > @@ -242,6 +256,14 @@ enum ice_flow_field {
> > #define ICE_FLOW_HASH_FLD_SCTP_DST_PORT \
> > BIT_ULL(ICE_FLOW_FIELD_IDX_SCTP_DST_PORT)
> >
> > +#define ICE_FLOW_HASH_FLD_GTPC_TEID BIT_ULL(ICE_FLOW_FIELD_IDX_GTPC_TEID)
> > +#define ICE_FLOW_HASH_FLD_GTPU_IP_TEID BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_IP_TEID)
> > +#define ICE_FLOW_HASH_FLD_GTPU_EH_TEID BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_EH_TEID)
> > +#define ICE_FLOW_HASH_FLD_GTPU_EH_QFI BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_EH_QFI)
>
> This doesn't seem to be used anywhere.
>
> > +#define ICE_FLOW_HASH_FLD_GTPU_UP_TEID BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_UP_TEID)
> > +#define ICE_FLOW_HASH_FLD_GTPU_DWN_TEID \
> > + BIT_ULL(ICE_FLOW_FIELD_IDX_GTPU_DWN_TEID)
> > +
> > /* Flow headers and fields for AVF support */
> > enum ice_flow_avf_hdr_field {
> > /* Values 0 - 28 are reserved for future use */
> > diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
> > index 9be724291ef8..72f737c6c9ba 100644
> > --- a/drivers/net/ethernet/intel/ice/ice_lib.c
> > +++ b/drivers/net/ethernet/intel/ice/ice_lib.c
> > @@ -1618,6 +1618,25 @@ static const struct ice_rss_hash_cfg default_rss_cfgs[] = {
> > */
> > {ICE_FLOW_SEG_HDR_SCTP | ICE_FLOW_SEG_HDR_IPV4,
> > ICE_HASH_SCTP_IPV4, ICE_RSS_OUTER_HEADERS, false},
> > + /* configure RSS for gtpc4 with input set IPv4 src/dst */
> > + {ICE_FLOW_SEG_HDR_GTPC | ICE_FLOW_SEG_HDR_IPV4,
> > + ICE_FLOW_HASH_IPV4, ICE_RSS_OUTER_HEADERS, false},
> > + /* configure RSS for gtpc4t with input set IPv4 src/dst */
> > + {ICE_FLOW_SEG_HDR_GTPC_TEID | ICE_FLOW_SEG_HDR_IPV4,
> > + ICE_FLOW_HASH_GTP_U_IPV4_TEID, ICE_RSS_OUTER_HEADERS, false},
> > + /* configure RSS for gtpu4 with input set IPv4 src/dst */
> > + {ICE_FLOW_SEG_HDR_GTPU_IP | ICE_FLOW_SEG_HDR_IPV4,
> > + ICE_FLOW_HASH_GTP_IPV4_TEID, ICE_RSS_OUTER_HEADERS, false},
>
> Two braces above: looks like ICE_FLOW_HASH_GTP_U_IPV4_TEID and
> ICE_FLOW_HASH_GTP_IPV4_TEID should be swapped?
>
> > + /* configure RSS for gtpu4e with input set IPv4 src/dst */
> > + {ICE_FLOW_SEG_HDR_GTPU_EH | ICE_FLOW_SEG_HDR_IPV4,
> > + ICE_FLOW_HASH_GTP_U_IPV4_EH, ICE_RSS_OUTER_HEADERS, false},
> > + /* configure RSS for gtpu4u with input set IPv4 src/dst */
> > + { ICE_FLOW_SEG_HDR_GTPU_UP | ICE_FLOW_SEG_HDR_IPV4,
> > + ICE_FLOW_HASH_GTP_U_IPV4_UP, ICE_RSS_OUTER_HEADERS, false},
> > + /* configure RSS for gtpu4d with input set IPv4 src/dst */
> > + {ICE_FLOW_SEG_HDR_GTPU_DWN | ICE_FLOW_SEG_HDR_IPV4,
> > + ICE_FLOW_HASH_GTP_U_IPV4_DWN, ICE_RSS_OUTER_HEADERS, false},
> > +
> > /* configure RSS for tcp6 with input set IPv6 src/dst, TCP src/dst */
> > {ICE_FLOW_SEG_HDR_TCP | ICE_FLOW_SEG_HDR_IPV6,
> > ICE_HASH_TCP_IPV6, ICE_RSS_ANY_HEADERS, false},
> > @@ -1632,6 +1651,24 @@ static const struct ice_rss_hash_cfg default_rss_cfgs[] = {
> > /* configure RSS for IPSEC ESP SPI with input set MAC_IPV4_SPI */
> > {ICE_FLOW_SEG_HDR_ESP,
> > ICE_FLOW_HASH_ESP_SPI, ICE_RSS_OUTER_HEADERS, false},
> > + /* configure RSS for gtpc6 with input set IPv6 src/dst */
> > + {ICE_FLOW_SEG_HDR_GTPC | ICE_FLOW_SEG_HDR_IPV6,
> > + ICE_FLOW_HASH_IPV6, ICE_RSS_OUTER_HEADERS, false},
> > + /* configure RSS for gtpc6t with input set IPv6 src/dst */
> > + {ICE_FLOW_SEG_HDR_GTPC_TEID | ICE_FLOW_SEG_HDR_IPV6,
> > + ICE_FLOW_HASH_GTP_U_IPV6_TEID, ICE_RSS_OUTER_HEADERS, false},
> > + /* configure RSS for gtpu6 with input set IPv6 src/dst */
> > + {ICE_FLOW_SEG_HDR_GTPU_IP | ICE_FLOW_SEG_HDR_IPV6,
> > + ICE_FLOW_HASH_GTP_IPV6_TEID, ICE_RSS_OUTER_HEADERS, false},
>
> Ditto, ICE_FLOW_HASH_GTP_U_IPV6_TEID and ICE_FLOW_HASH_GTP_IPV6_TEID seem
> to be incorrectly placed.
>
> > + /* configure RSS for gtpu6e with input set IPv6 src/dst */
> > + {ICE_FLOW_SEG_HDR_GTPU_EH | ICE_FLOW_SEG_HDR_IPV6,
> > + ICE_FLOW_HASH_GTP_U_IPV6_EH, ICE_RSS_OUTER_HEADERS, false},
> > + /* configure RSS for gtpu6u with input set IPv6 src/dst */
> > + { ICE_FLOW_SEG_HDR_GTPU_UP | ICE_FLOW_SEG_HDR_IPV6,
> > + ICE_FLOW_HASH_GTP_U_IPV6_UP, ICE_RSS_OUTER_HEADERS, false},
> > + /* configure RSS for gtpu6d with input set IPv6 src/dst */
> > + {ICE_FLOW_SEG_HDR_GTPU_DWN | ICE_FLOW_SEG_HDR_IPV6,
> > + ICE_FLOW_HASH_GTP_U_IPV6_DWN, ICE_RSS_OUTER_HEADERS, false},
> > };
> >
> > /**
> > diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
> > index 06ef6b78b7de..cdc3fa7fc944 100644
> > --- a/include/uapi/linux/ethtool.h
> > +++ b/include/uapi/linux/ethtool.h
> > @@ -2023,6 +2023,53 @@ static inline int ethtool_validate_duplex(__u8 duplex)
> > #define IPV4_FLOW 0x10 /* hash only */
> > #define IPV6_FLOW 0x11 /* hash only */
> > #define ETHER_FLOW 0x12 /* spec only (ether_spec) */
> > +
> > +/* Used for GTP-U IPv4 and IPv6.
> > + * The format of GTP packets only includes
> > + * elements such as TEID and GTP version.
> > + * It is primarily intended for data communication of the UE.
> > + */
> > +#define GTPU_V4_FLOW 0x13 /* hash only */
> > +#define GTPU_V6_FLOW 0x14 /* hash only */
> > +
> > +/* Use for GTP-C IPv4 and v6.
> > + * The format of these GTP packets does not include TEID.
> > + * Primarily expected to be used for communication
> > + * to create sessions for UE data communication,
> > + * commonly referred to as CSR (Create Session Request).
> > + */
> > +#define GTPC_V4_FLOW 0x15 /* hash only */
> > +#define GTPC_V6_FLOW 0x16 /* hash only */
> > +
> > +/* Use for GTP-C IPv4 and v6.
> > + * Unlike GTPC_V4_FLOW, the format of these GTP packets includes TEID.
> > + * After session creation, it becomes this packet.
> > + * This is mainly used for requests to realize UE handover.
> > + */
> > +#define GTPC_TEID_V4_FLOW 0x17 /* hash only */
> > +#define GTPC_TEID_V6_FLOW 0x18 /* hash only */
> > +
> > +/* Use for GTP-U and extended headers for the PDU session container(PSC).
>
> Again, missing space before (
>
> > + * The format of these GTP packets includes TEID and QFI.
> > + * In 5G communication using UPF (User Plane Function),
> > + * data communication with this extended header is performed.
> > + */
> > +#define GTPU_EH_V4_FLOW 0x19 /* hash only */
> > +#define GTPU_EH_V6_FLOW 0x1a /* hash only */
> > +
> > +/* Use for GTP-U IPv4 and v6 PDU session container(PSC) extended headers.
>
> Again, missing space before (
>
> > + * This differs from GTPU_EH_V(4|6)_FLOW in that it is distinguished by
> > + * UL/DL included in the PSC.
> > + * There are differences in the data included based on Downlink/Uplink,
> > + * and can be used to distinguish packets.
> > + * The functions described so far are useful when you want to
> > + * handle communication from the mobile network in UPF, PGW, etc.
> > + */
> > +#define GTPU_UL_V4_FLOW 0x1b /* hash only */
> > +#define GTPU_UL_V6_FLOW 0x1c /* hash only */
> > +#define GTPU_DL_V4_FLOW 0x1d /* hash only */
> > +#define GTPU_DL_V6_FLOW 0x1e /* hash only */
> > +
> > /* Flag to enable additional fields in struct ethtool_rx_flow_spec */
> > #define FLOW_EXT 0x80000000
> > #define FLOW_MAC_EXT 0x40000000
> > @@ -2037,6 +2084,7 @@ static inline int ethtool_validate_duplex(__u8 duplex)
> > #define RXH_IP_DST (1 << 5)
> > #define RXH_L4_B_0_1 (1 << 6) /* src port in case of TCP/UDP/SCTP */
> > #define RXH_L4_B_2_3 (1 << 7) /* dst port in case of TCP/UDP/SCTP */
> > +#define RXH_GTP_TEID (1 << 8) /* teid in case of GTP */
> > #define RXH_DISCARD (1 << 31)
> >
> > #define RX_CLS_FLOW_DISC 0xffffffffffffffffULL
>
> Thanks,
> Marcin

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