Re: [dpdk-dev] [PATCH v3 4/4] net/iavf: support FDIR for IP fragment packet

["Guo, Jia" <jia.guo@intel.com>]

Hi, Ting

> -----Original Message-----
> From: Xu, Ting <ting.xu@intel.com>
> Sent: Monday, April 12, 2021 4:45 PM
> To: Guo, Jia <jia.guo@intel.com>; orika@nvidia.com; Zhang, Qi Z
> <qi.z.zhang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; Li, Xiaoyun
> <xiaoyun.li@intel.com>; Wu, Jingjing <jingjing.wu@intel.com>; Guo, Junfeng
> <junfeng.guo@intel.com>
> Cc: dev@dpdk.org
> Subject: RE: [PATCH v3 4/4] net/iavf: support FDIR for IP fragment packet
> 
> Hi, Jeff
> 
> Best Regards,
> Xu Ting
> 
> > -----Original Message-----
> > From: Guo, Jia <jia.guo@intel.com>
> > Sent: Sunday, April 11, 2021 2:02 PM
> > To: orika@nvidia.com; Zhang, Qi Z <qi.z.zhang@intel.com>; Xing, Beilei
> > <beilei.xing@intel.com>; Li, Xiaoyun <xiaoyun.li@intel.com>; Wu,
> > Jingjing <jingjing.wu@intel.com>
> > Cc: dev@dpdk.org; Xu, Ting <ting.xu@intel.com>; Guo, Jia
> > <jia.guo@intel.com>
> > Subject: [PATCH v3 4/4] net/iavf: support FDIR for IP fragment packet
> >
> > New FDIR parsing are added to handle the fragmented IPv4/IPv6 packet.
> >
> > Signed-off-by: Ting Xu <ting.xu@intel.com>
> > Signed-off-by: Jeff Guo <jia.guo@intel.com>
> > ---
> >  drivers/net/iavf/iavf_fdir.c         | 376 ++++++++++++++++++---------
> >  drivers/net/iavf/iavf_generic_flow.h |   5 +
> >  2 files changed, 257 insertions(+), 124 deletions(-)
> >
> > diff --git a/drivers/net/iavf/iavf_fdir.c
> > b/drivers/net/iavf/iavf_fdir.c index
> > 62f032985a..64c169f8c4 100644
> > --- a/drivers/net/iavf/iavf_fdir.c
> > +++ b/drivers/net/iavf/iavf_fdir.c
> > @@ -34,7 +34,7 @@
> >  #define IAVF_FDIR_INSET_ETH_IPV4 (\
> >  IAVF_INSET_IPV4_SRC | IAVF_INSET_IPV4_DST | \
> IAVF_INSET_IPV4_PROTO
> > | IAVF_INSET_IPV4_TOS | \
> > -IAVF_INSET_IPV4_TTL)
> > +IAVF_INSET_IPV4_TTL | IAVF_INSET_IPV4_ID)
> >
> 
> Skip...
> 
> > +if (ipv4_mask->hdr.version_ihl ||
> > +    ipv4_mask->hdr.total_length ||
> > +    ipv4_mask->hdr.hdr_checksum) {
> > +rte_flow_error_set(error, EINVAL,
> > +
> > RTE_FLOW_ERROR_TYPE_ITEM,
> > +   item, "Invalid IPv4 mask.");
> > +return -rte_errno;
> > +}
> >
> > -if (tun_inner) {
> > -input_set &=
> > ~IAVF_PROT_IPV4_OUTER;
> > -input_set |= IAVF_PROT_IPV4_INNER;
> > -}
> 
> This part "tun_inner" is newly added and needed for GTPU inner, cannot be
> deleted.
> 

Oh, absolution it should not be deleted, will correct it in the coming version. Thanks.

> > +if (ipv4_last &&
> > +    (ipv4_last->hdr.version_ihl ||
> > +     ipv4_last->hdr.type_of_service ||
> > +     ipv4_last->hdr.time_to_live ||
> > +     ipv4_last->hdr.total_length |
> > +     ipv4_last->hdr.next_proto_id ||
> > +     ipv4_last->hdr.hdr_checksum ||
> > +     ipv4_last->hdr.src_addr ||
> > +     ipv4_last->hdr.dst_addr)) {
> > +rte_flow_error_set(error, EINVAL,
> > +
> > RTE_FLOW_ERROR_TYPE_ITEM,
> > +   item, "Invalid IPv4 last.");
> > +return -rte_errno;
> > +}
> >
> > -rte_memcpy(hdr->buffer,
> > -&ipv4_spec->hdr,
> > -sizeof(ipv4_spec->hdr));
> > +if (ipv4_mask->hdr.type_of_service ==
> > +    UINT8_MAX) {
> > +input_set |= IAVF_INSET_IPV4_TOS;
> > +VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr,
> > IPV4,
> > + DSCP);
> > +}
> > +
> > +if (ipv4_mask->hdr.next_proto_id == UINT8_MAX) { input_set |=
> > +IAVF_INSET_IPV4_PROTO; VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr,
> > IPV4,
> > + PROT);
> > +}
> > +
> > +if (ipv4_mask->hdr.time_to_live == UINT8_MAX) { input_set |=
> > +IAVF_INSET_IPV4_TTL; VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr,
> > IPV4,
> > + TTL);
> > +}
> > +
> > +if (ipv4_mask->hdr.src_addr == UINT32_MAX) { input_set |=
> > +IAVF_INSET_IPV4_SRC; VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr,
> > IPV4,
> > + SRC);
> > +}
> > +
> > +if (ipv4_mask->hdr.dst_addr == UINT32_MAX) { input_set |=
> > +IAVF_INSET_IPV4_DST; VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr,
> > IPV4,
> > + DST);
> > +}
> > +
> > +rte_memcpy(hdr->buffer, &ipv4_spec->hdr,
> > +   sizeof(ipv4_spec->hdr));
> > +
> > +hdrs->count = ++layer;
> > +
> > +/* only support any packet id for fragment IPv4
> > + * any packet_id:
> > + * spec is 0, last is 0xffff, mask is 0xffff  */ if (ipv4_last &&
> > +ipv4_spec->hdr.packet_id == 0 &&
> > +    ipv4_last->hdr.packet_id == UINT16_MAX &&
> > +    ipv4_mask->hdr.packet_id == UINT16_MAX &&
> > +    ipv4_mask->hdr.fragment_offset == UINT16_MAX) {
> > +/* all IPv4 fragment packet has the same
> > + * ethertype, if the spec is for all valid
> > + * packet id, set ethertype into input set.
> > + */
> > +input_set |= IAVF_INSET_ETHERTYPE;
> > +VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr1,
> > ETH,
> > + ETHERTYPE);
> > +
> > +/* add dummy header for IPv4 Fragment */
> > +iavf_fdir_add_fragment_hdr(hdrs, layer); } else if
> > +(ipv4_mask->hdr.packet_id == UINT16_MAX) { rte_flow_error_set(error,
> > +EINVAL,
> > +
> > RTE_FLOW_ERROR_TYPE_ITEM,
> > +   item, "Invalid IPv4 mask.");
> > +return -rte_errno;
> >  }
> >
> > -filter->add_fltr.rule_cfg.proto_hdrs.count = ++layer;
> >  break;
> >
> >  case RTE_FLOW_ITEM_TYPE_IPV6:
> > @@ -707,63 +787,109 @@ iavf_fdir_parse_pattern(__rte_unused struct
> > iavf_adapter *ad,  ipv6_spec = item->spec;  ipv6_mask = item->mask;
> >
> > -hdr = &filter-
> > >add_fltr.rule_cfg.proto_hdrs.proto_hdr[layer];
> > +hdr = &hdrs->proto_hdr[layer];
> >
> >  VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, IPV6);
> >
> > -if (ipv6_spec && ipv6_mask) {
> > -if (ipv6_mask->hdr.payload_len) {
> > -rte_flow_error_set(error, EINVAL,
> > -
> > RTE_FLOW_ERROR_TYPE_ITEM,
> > -item, "Invalid IPv6 mask");
> > -return -rte_errno;
> > -}
> > +if (!(ipv6_spec && ipv6_mask)) {
> > +hdrs->count = ++layer;
> > +break;
> > +}
> >
> > -if ((ipv6_mask->hdr.vtc_flow &
> > -
> > rte_cpu_to_be_32(IAVF_IPV6_TC_MASK))
> > -==
> > rte_cpu_to_be_32(IAVF_IPV6_TC_MASK)) { -input_set |=
> > IAVF_INSET_IPV6_TC;
> > -
> > VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, TC); -} -if
> > (ipv6_mask->hdr.proto == UINT8_MAX) { -input_set |=
> > IAVF_INSET_IPV6_NEXT_HDR;
> > -
> > VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, PROT); -} -if
> > (ipv6_mask->hdr.hop_limits == UINT8_MAX) { -input_set |=
> > IAVF_INSET_IPV6_HOP_LIMIT;
> > -
> > VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, HOP_LIMIT); -} -if
> > (!memcmp(ipv6_mask->hdr.src_addr, -ipv6_addr_mask,
> > -RTE_DIM(ipv6_mask->hdr.src_addr))) {
> > -input_set |= IAVF_INSET_IPV6_SRC;
> > -
> > VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, SRC); -} -if
> > (!memcmp(ipv6_mask->hdr.dst_addr, -ipv6_addr_mask,
> > -RTE_DIM(ipv6_mask->hdr.dst_addr)))
> > {
> > -input_set |= IAVF_INSET_IPV6_DST;
> > -
> > VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, DST); -}
> > +if (ipv6_mask->hdr.payload_len) {
> > +rte_flow_error_set(error, EINVAL,
> > +
> > RTE_FLOW_ERROR_TYPE_ITEM,
> > +   item, "Invalid IPv6 mask");
> > +return -rte_errno;
> > +}
> >
> > -if (tun_inner) {
> > -input_set &=
> > ~IAVF_PROT_IPV6_OUTER;
> > -input_set |= IAVF_PROT_IPV6_INNER;
> > -}
> 
> The same as ipv4.
> 
> > +if ((ipv6_mask->hdr.vtc_flow &
> > +      rte_cpu_to_be_32(IAVF_IPV6_TC_MASK))
> > +     == rte_cpu_to_be_32(IAVF_IPV6_TC_MASK)) { input_set |=
> > +IAVF_INSET_IPV6_TC; VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr,
> > IPV6,
> > + TC);
> > +}
> >
> > -rte_memcpy(hdr->buffer,
> > -&ipv6_spec->hdr,
> > -sizeof(ipv6_spec->hdr));
> > +if (ipv6_mask->hdr.proto == UINT8_MAX) { input_set |=
> > +IAVF_INSET_IPV6_NEXT_HDR;
> VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr,
> > IPV6,
> > + PROT);
> > +}
> > +
> > +if (ipv6_mask->hdr.hop_limits == UINT8_MAX) { input_set |=
> > +IAVF_INSET_IPV6_HOP_LIMIT;
> VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr,
> > IPV6,
> > + HOP_LIMIT);
> > +}
> > +
> > +if (!memcmp(ipv6_mask->hdr.src_addr,
> > ipv6_addr_mask,
> > +    RTE_DIM(ipv6_mask->hdr.src_addr))) { input_set |=
> > +IAVF_INSET_IPV6_SRC; VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr,
> > IPV6,
> > + SRC);
> > +}
> > +if (!memcmp(ipv6_mask->hdr.dst_addr,
> > ipv6_addr_mask,
> > +    RTE_DIM(ipv6_mask->hdr.dst_addr))) { input_set |=
> > +IAVF_INSET_IPV6_DST; VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr,
> > IPV6,
> > + DST);
> > +}
> > +
> > +rte_memcpy(hdr->buffer, &ipv6_spec->hdr,
> > +   sizeof(ipv6_spec->hdr));
> > +
> > +hdrs->count = ++layer;
> > +break;
> > +
> 
> Skip...
> 
> > @@ -84,6 +85,8 @@
> >  (IAVF_PROT_IPV4_OUTER | IAVF_IP_PROTO)  #define
> IAVF_INSET_IPV4_TTL \
> > (IAVF_PROT_IPV4_OUTER | IAVF_IP_TTL)
> > +#define IAVF_INSET_IPV4_ID \
> > +(IAVF_PROT_IPV4_OUTER | IAVF_IP_PKID)
> >  #define IAVF_INSET_IPV6_SRC \
> >  (IAVF_PROT_IPV6_OUTER | IAVF_IP_SRC)
> >  #define IAVF_INSET_IPV6_DST \
> > @@ -94,6 +97,8 @@
> >  (IAVF_PROT_IPV6_OUTER | IAVF_IP_TTL)
> >  #define IAVF_INSET_IPV6_TC \
> >  (IAVF_PROT_IPV6_OUTER | IAVF_IP_TOS)
> > +#define IAVF_INSET_IPV6_ID \
> > +(IAVF_PROT_IPV6_OUTER | IAVF_IP_PKID)
> >
> >  #define IAVF_INSET_TUN_IPV4_SRC \
> >  (IAVF_PROT_IPV4_INNER | IAVF_IP_SRC)
> > --
> > 2.20.1
>