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net/iavf: simplify flow director rules for IP fragment

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This patch simplify the pattern of flow rules of FDIR for IP fragment.

Flow rule can be created by the following command:
1. flow create 0 ingress pattern eth /
   ipv4 fragment_offset spec 0x2000 fragment_offset mask 0x2000 /
   end <actions>
2. flow create 0 ingress pattern eth / ipv6 /
   ipv6_frag_ext fragment_offset spec 0x0001 fragment_offset mask 0x0001 /
   end <actions>

Signed-off-by: Wenjun Wu <wenjun1.wu@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
This commit is contained in:
Wenjun Wu 2021-07-07 14:18:53 +08:00 committed by Qi Zhang
parent 5ae0906ee7
commit 00af17037d
1 changed files with 16 additions and 20 deletions
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36
drivers/net/iavf/iavf_fdir.c
View File

@ -625,7 +625,6 @@ iavf_fdir_parse_pattern(__rte_unused struct iavf_adapter *ad,
const struct rte_flow_item_ipv4 *ipv4_spec, *ipv4_last, *ipv4_mask;
const struct rte_flow_item_ipv6 *ipv6_spec, *ipv6_mask;
const struct rte_flow_item_ipv6_frag_ext *ipv6_frag_spec;
const struct rte_flow_item_ipv6_frag_ext *ipv6_frag_last;
const struct rte_flow_item_ipv6_frag_ext *ipv6_frag_mask;
const struct rte_flow_item_udp *udp_spec, *udp_mask;
const struct rte_flow_item_tcp *tcp_spec, *tcp_mask;
@ -802,17 +801,16 @@ iavf_fdir_parse_pattern(__rte_unused struct iavf_adapter *ad,
hdrs->count = ++layer;
/* only support any packet id for fragment IPv4
* any packet_id:
* spec is 0, last is 0xffff, mask is 0xffff
/* fragment Ipv4:
* spec is 0x2000, mask is 0x2000
*/
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) {
if (ipv4_spec->hdr.fragment_offset ==
rte_cpu_to_be_16(RTE_IPV4_HDR_MF_FLAG) &&
ipv4_mask->hdr.fragment_offset ==
rte_cpu_to_be_16(RTE_IPV4_HDR_MF_FLAG)) {
/* all IPv4 fragment packet has the same
* ethertype, if the spec is for all valid
* packet id, set ethertype into input set.
* ethertype, if the spec and mask is valid,
* set ethertype into input set.
*/
input_set |= IAVF_INSET_ETHERTYPE;
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr1, ETH,
@ -896,7 +894,6 @@ iavf_fdir_parse_pattern(__rte_unused struct iavf_adapter *ad,
case RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT:
ipv6_frag_spec = item->spec;
ipv6_frag_last = item->last;
ipv6_frag_mask = item->mask;
next_type = (item + 1)->type;
@ -909,17 +906,16 @@ iavf_fdir_parse_pattern(__rte_unused struct iavf_adapter *ad,
break;
}
/* only support any packet id for fragment IPv6
* any packet_id:
* spec is 0, last is 0xffffffff, mask is 0xffffffff
/* fragment Ipv6:
* spec is 0x1, mask is 0x1
*/
if (ipv6_frag_last && ipv6_frag_spec->hdr.id == 0 &&
ipv6_frag_last->hdr.id == UINT32_MAX &&
ipv6_frag_mask->hdr.id == UINT32_MAX &&
ipv6_frag_mask->hdr.frag_data == UINT16_MAX) {
if (ipv6_frag_spec->hdr.frag_data ==
rte_cpu_to_be_16(1) &&
ipv6_frag_mask->hdr.frag_data ==
rte_cpu_to_be_16(1)) {
/* all IPv6 fragment packet has the same
* ethertype, if the spec is for all valid
* packet id, set ethertype into input set.
* ethertype, if the spec and mask is valid,
* set ethertype into input set.
*/
input_set |= IAVF_INSET_ETHERTYPE;
VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr1, ETH,