Re: [dpdk-dev] [PATCH v2 3/3] net/ice: support FDIR for IP fragment packet

["Xu, Ting" <ting.xu@intel.com>]

Hi, Jeff

> -----Original Message-----
> From: Guo, Jia <jia.guo@intel.com>
> Sent: Wednesday, March 24, 2021 9:54 PM
> To: Yang, Qiming <qiming.yang@intel.com>; Zhang, Qi Z
> <qi.z.zhang@intel.com>
> Cc: Xu, Ting <ting.xu@intel.com>; dev@dpdk.org; Guo, Jia <jia.guo@intel.com>
> Subject: [PATCH v2 3/3] net/ice: support FDIR for IP fragment packet
> 
> New FDIR parsing are added to handle the fragmented IPv4/IPv6 packet.
> 
> Signed-off-by: Jeff Guo <jia.guo@intel.com>
> ---
>  drivers/net/ice/ice_fdir_filter.c | 96 +++++++++++++++++++++++++++----
>  1 file changed, 85 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/net/ice/ice_fdir_filter.c b/drivers/net/ice/ice_fdir_filter.c
> index 3af5812660..3504d3c6c2 100644
> --- a/drivers/net/ice/ice_fdir_filter.c
> +++ b/drivers/net/ice/ice_fdir_filter.c
> @@ -24,7 +24,7 @@
>  #define ICE_FDIR_INSET_ETH_IPV4 (\
>  	ICE_FDIR_INSET_ETH | \
>  	ICE_INSET_IPV4_SRC | ICE_INSET_IPV4_DST | ICE_INSET_IPV4_TOS | \
> -	ICE_INSET_IPV4_TTL | ICE_INSET_IPV4_PROTO)
> +	ICE_INSET_IPV4_TTL | ICE_INSET_IPV4_PROTO | ICE_INSET_IPV4_PKID)
> 
>  #define ICE_FDIR_INSET_ETH_IPV4_UDP (\
>  	ICE_FDIR_INSET_ETH_IPV4 | \
> @@ -41,7 +41,8 @@
>  #define ICE_FDIR_INSET_ETH_IPV6 (\
>  	ICE_INSET_DMAC | \
>  	ICE_INSET_IPV6_SRC | ICE_INSET_IPV6_DST | ICE_INSET_IPV6_TC | \
> -	ICE_INSET_IPV6_HOP_LIMIT | ICE_INSET_IPV6_NEXT_HDR)
> +	ICE_INSET_IPV6_HOP_LIMIT | ICE_INSET_IPV6_NEXT_HDR | \
> +	ICE_INSET_IPV6_PKID)
> 
>  #define ICE_FDIR_INSET_ETH_IPV6_UDP (\
>  	ICE_FDIR_INSET_ETH_IPV6 | \
> @@ -56,7 +57,8 @@
>  	ICE_INSET_SCTP_SRC_PORT | ICE_INSET_SCTP_DST_PORT)
> 
>  #define ICE_FDIR_INSET_IPV4 (\
> -	ICE_INSET_IPV4_SRC | ICE_INSET_IPV4_DST)
> +	ICE_INSET_IPV4_SRC | ICE_INSET_IPV4_DST | \
> +	ICE_INSET_IPV4_PKID)
> 
>  #define ICE_FDIR_INSET_IPV4_TCP (\
>  	ICE_FDIR_INSET_IPV4 | \
> @@ -72,7 +74,8 @@
> 
>  #define ICE_FDIR_INSET_ETH_IPV4_VXLAN (\
>  	ICE_FDIR_INSET_ETH | \
> -	ICE_INSET_IPV4_SRC | ICE_INSET_IPV4_DST)
> +	ICE_INSET_IPV4_SRC | ICE_INSET_IPV4_DST | \
> +	ICE_INSET_IPV4_PKID)
> 
>  #define ICE_FDIR_INSET_IPV4_GTPU (\
>  	ICE_INSET_IPV4_SRC | ICE_INSET_IPV4_DST | ICE_INSET_GTPU_TEID)
> @@ -95,6 +98,7 @@ static struct ice_pattern_match_item
> ice_fdir_pattern_list[] = {
>  	{pattern_eth_ipv4_tcp,
> 	ICE_FDIR_INSET_ETH_IPV4_TCP,	ICE_INSET_NONE,
> 	ICE_INSET_NONE},
>  	{pattern_eth_ipv4_sctp,
> 	ICE_FDIR_INSET_ETH_IPV4_SCTP,	ICE_INSET_NONE,
> 		ICE_INSET_NONE},
>  	{pattern_eth_ipv6,
> 	ICE_FDIR_INSET_ETH_IPV6,	ICE_INSET_NONE,
> 	ICE_INSET_NONE},
> +	{pattern_eth_ipv6_frag_ext,
> 	ICE_FDIR_INSET_ETH_IPV6,	ICE_INSET_NONE,
> 	ICE_INSET_NONE},
>  	{pattern_eth_ipv6_udp,
> 	ICE_FDIR_INSET_ETH_IPV6_UDP,	ICE_INSET_NONE,
> 		ICE_INSET_NONE},
>  	{pattern_eth_ipv6_tcp,
> 	ICE_FDIR_INSET_ETH_IPV6_TCP,	ICE_INSET_NONE,
> 	ICE_INSET_NONE},
>  	{pattern_eth_ipv6_sctp,
> 	ICE_FDIR_INSET_ETH_IPV6_SCTP,	ICE_INSET_NONE,
> 		ICE_INSET_NONE},
> @@ -882,11 +886,13 @@ ice_fdir_input_set_parse(uint64_t inset, enum
> ice_flow_field *field)
>  		{ICE_INSET_IPV4_TOS, ICE_FLOW_FIELD_IDX_IPV4_DSCP},
>  		{ICE_INSET_IPV4_TTL, ICE_FLOW_FIELD_IDX_IPV4_TTL},
>  		{ICE_INSET_IPV4_PROTO, ICE_FLOW_FIELD_IDX_IPV4_PROT},
> +		{ICE_INSET_IPV4_PKID, ICE_FLOW_FIELD_IDX_IPV4_ID},
>  		{ICE_INSET_IPV6_SRC, ICE_FLOW_FIELD_IDX_IPV6_SA},
>  		{ICE_INSET_IPV6_DST, ICE_FLOW_FIELD_IDX_IPV6_DA},
>  		{ICE_INSET_IPV6_TC, ICE_FLOW_FIELD_IDX_IPV6_DSCP},
>  		{ICE_INSET_IPV6_NEXT_HDR,
> ICE_FLOW_FIELD_IDX_IPV6_PROT},
>  		{ICE_INSET_IPV6_HOP_LIMIT, ICE_FLOW_FIELD_IDX_IPV6_TTL},
> +		{ICE_INSET_IPV6_PKID, ICE_FLOW_FIELD_IDX_IPV6_ID},
>  		{ICE_INSET_TCP_SRC_PORT,
> ICE_FLOW_FIELD_IDX_TCP_SRC_PORT},
>  		{ICE_INSET_TCP_DST_PORT,
> ICE_FLOW_FIELD_IDX_TCP_DST_PORT},
>  		{ICE_INSET_UDP_SRC_PORT,
> ICE_FLOW_FIELD_IDX_UDP_SRC_PORT}, @@ -935,6 +941,10 @@
> ice_fdir_input_set_hdrs(enum ice_fltr_ptype flow, struct ice_flow_seg_info
> *seg)
>  		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_IPV4 |
>  				  ICE_FLOW_SEG_HDR_IPV_OTHER);
>  		break;
> +	case ICE_FLTR_PTYPE_FRAG_IPV4:
> +		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_IPV4 |
> +				  ICE_FLOW_SEG_HDR_IPV_FRAG);
> +		break;
>  	case ICE_FLTR_PTYPE_NONF_IPV6_UDP:
>  		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_UDP |
>  				  ICE_FLOW_SEG_HDR_IPV6 |
> @@ -951,6 +961,10 @@ ice_fdir_input_set_hdrs(enum ice_fltr_ptype flow,
> struct ice_flow_seg_info *seg)
>  				  ICE_FLOW_SEG_HDR_IPV_OTHER);
>  		break;
>  	case ICE_FLTR_PTYPE_NONF_IPV6_OTHER:
> +		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_IPV6 |
> +				  ICE_FLOW_SEG_HDR_IPV_FRAG);
> +		break;
> +	case ICE_FLTR_PTYPE_FRAG_IPV6:

Are the frag and non-frag cases inverted?

>  		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_IPV6 |
>  				  ICE_FLOW_SEG_HDR_IPV_OTHER);
>  		break;
> @@ -1592,8 +1606,10 @@ ice_fdir_parse_pattern(__rte_unused struct
> ice_adapter *ad,
>  	enum rte_flow_item_type l3 = RTE_FLOW_ITEM_TYPE_END;
>  	enum ice_fdir_tunnel_type tunnel_type =
> ICE_FDIR_TUNNEL_TYPE_NONE;
>  	const struct rte_flow_item_eth *eth_spec, *eth_mask;
> -	const struct rte_flow_item_ipv4 *ipv4_spec, *ipv4_mask;
> +	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,
> +					*ipv6_frag_last, *ipv6_frag_mask;
>  	const struct rte_flow_item_tcp *tcp_spec, *tcp_mask;
>  	const struct rte_flow_item_udp *udp_spec, *udp_mask;
>  	const struct rte_flow_item_sctp *sctp_spec, *sctp_mask; @@ -1615,6
> +1631,7 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
>  	struct ice_fdir_extra *p_ext_data;
>  	struct ice_fdir_v4 *p_v4 = NULL;
>  	struct ice_fdir_v6 *p_v6 = NULL;
> +	bool spec_all_pid = false;
> 
>  	for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++)
> {
>  		if (item->type == RTE_FLOW_ITEM_TYPE_VXLAN) @@ -1632,13
> +1649,14 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter *ad,
>  	 * flow. input_set_i is used for inner part.
>  	 */
>  	for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++)
> {
> -		if (item->last) {
> +		if (item->last && (item_type != RTE_FLOW_ITEM_TYPE_IPV4 ||
> +				   item_type !=
> +				   RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT)) {
>  			rte_flow_error_set(error, EINVAL,
> -					   RTE_FLOW_ERROR_TYPE_ITEM,
> -					   item,
> +					   RTE_FLOW_ERROR_TYPE_ITEM, item,
>  					   "Not support range");
> -			return -rte_errno;
>  		}
> +
>  		item_type = item->type;
> 
>  		input_set = (tunnel_type && !is_outer) ?
> @@ -1689,6 +1707,7 @@ ice_fdir_parse_pattern(__rte_unused struct
> ice_adapter *ad,
>  			flow_type = ICE_FLTR_PTYPE_NONF_IPV4_OTHER;
>  			l3 = RTE_FLOW_ITEM_TYPE_IPV4;
>  			ipv4_spec = item->spec;
> +			ipv4_last = item->last;
>  			ipv4_mask = item->mask;
>  			p_v4 = (tunnel_type && is_outer) ?
>  			       &filter->input.ip_outer.v4 :
> @@ -1700,8 +1719,6 @@ ice_fdir_parse_pattern(__rte_unused struct
> ice_adapter *ad,
>  			/* Check IPv4 mask and update input set */
>  			if (ipv4_mask->hdr.version_ihl ||
>  			    ipv4_mask->hdr.total_length ||
> -			    ipv4_mask->hdr.packet_id ||
> -			    ipv4_mask->hdr.fragment_offset ||
>  			    ipv4_mask->hdr.hdr_checksum) {
>  				rte_flow_error_set(error, EINVAL,
> 
> RTE_FLOW_ERROR_TYPE_ITEM,
> @@ -1710,6 +1727,20 @@ ice_fdir_parse_pattern(__rte_unused struct
> ice_adapter *ad,
>  				return -rte_errno;
>  			}
> 
> +			if (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;
> +			}
> +
>  			if (ipv4_mask->hdr.dst_addr == UINT32_MAX)
>  				*input_set |= ICE_INSET_IPV4_DST;
>  			if (ipv4_mask->hdr.src_addr == UINT32_MAX) @@ -
> 1726,6 +1757,24 @@ ice_fdir_parse_pattern(__rte_unused struct ice_adapter
> *ad,
>  			p_v4->ttl = ipv4_spec->hdr.time_to_live;
>  			p_v4->proto = ipv4_spec->hdr.next_proto_id;
>  			p_v4->tos = ipv4_spec->hdr.type_of_service;
> +
> +			if (ipv4_mask->hdr.packet_id == UINT16_MAX) {
> +				if (ipv4_last &&
> +				    ipv4_spec->hdr.packet_id == 0 &&
> +				    ipv4_last->hdr.packet_id == 0xffff)
> +					spec_all_pid = true;
> +
> +				/* All IPv4 fragment packet has the same
> +				 * ethertype, if the spec is for all invalid
> +				 * packet id, set ethertype into input set.
> +				 */
> +				*input_set |= spec_all_pid ?
> +						ICE_INSET_ETHERTYPE :
> +						ICE_INSET_IPV4_PKID;
> +			}
> +
> +			if (ipv4_mask->hdr.fragment_offset == UINT16_MAX)
> +				flow_type = ICE_FLTR_PTYPE_FRAG_IPV4;
>  			break;
>  		case RTE_FLOW_ITEM_TYPE_IPV6:
>  			flow_type = ICE_FLTR_PTYPE_NONF_IPV6_OTHER; @@
> -1771,6 +1820,31 @@ ice_fdir_parse_pattern(__rte_unused struct
> ice_adapter *ad,
>  			p_v6->proto = ipv6_spec->hdr.proto;
>  			p_v6->hlim = ipv6_spec->hdr.hop_limits;
>  			break;
> +		case RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT:
> +			l3 = RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT;
> +			flow_type = ICE_FLTR_PTYPE_FRAG_IPV6;
> +			ipv6_frag_spec = item->spec;
> +			ipv6_frag_last = item->last;
> +			ipv6_frag_mask = item->mask;
> +
> +			if (!(ipv6_frag_spec && ipv6_frag_mask))
> +				break;
> +
> +			if (ipv6_frag_last &&
> +			    ipv6_frag_spec->hdr.id == 0 &&
> +			    ipv6_frag_last->hdr.id ==
> +			    0xffffffff)
> +				spec_all_pid = true;
> +
> +			/* All IPv6 fragment packet has the same ethertype, if
> +			 * the spec is for all invalid packet id, set ethertype
> +			 * into input set.
> +			 */
> +			*input_set |= spec_all_pid ?
> +					ICE_INSET_ETHERTYPE :
> +					ICE_INSET_IPV6_PKID;
> +			break;
> +
>  		case RTE_FLOW_ITEM_TYPE_TCP:
>  			if (l3 == RTE_FLOW_ITEM_TYPE_IPV4)
>  				flow_type = ICE_FLTR_PTYPE_NONF_IPV4_TCP;
> --
> 2.20.1