ice: Enable FDIR Configure for AVF

The virtual channel is going to be extended to support FDIR and
RSS configure from AVF. New data structures and OP codes will be
added, the patch enable the FDIR part.

To support above advanced AVF feature, we need to figure out
what kind of data structure should be passed from VF to PF to describe
an FDIR rule or RSS config rule. The common part of the requirement is
we need a data structure to represent the input set selection of a rule's
hash key.

An input set selection is a group of fields be selected from one or more
network protocol layers that could be identified as a specific flow.
For example, select dst IP address from an IPv4 header combined with
dst port from the TCP header as the input set for an IPv4/TCP flow.

The patch adds a new data structure virtchnl_proto_hdrs to abstract
a network protocol headers group which is composed of layers of network
protocol header(virtchnl_proto_hdr).

A protocol header contains a 32 bits mask (field_selector) to describe
which fields are selected as input sets, as well as a header type
(enum virtchnl_proto_hdr_type). Each bit is mapped to a field in
enum virtchnl_proto_hdr_field guided by its header type.

+------------+-----------+------------------------------+
|            | Proto Hdr | Header Type A                |
|            |           +------------------------------+
|            |           | BIT 31 | ... | BIT 1 | BIT 0 |
|            |-----------+------------------------------+
|Proto Hdrs  | Proto Hdr | Header Type B                |
|            |           +------------------------------+
|            |           | BIT 31 | ... | BIT 1 | BIT 0 |
|            |-----------+------------------------------+
|            | Proto Hdr | Header Type C                |
|            |           +------------------------------+
|            |           | BIT 31 | ... | BIT 1 | BIT 0 |
|            |-----------+------------------------------+
|            |    ....                                  |
+-------------------------------------------------------+

All fields in enum virtchnl_proto_hdr_fields are grouped with header type
and the value of the first field of a header type is always 32 aligned.

enum proto_hdr_type {
        header_type_A = 0;
        header_type_B = 1;
        ....
}

enum proto_hdr_field {
        /* header type A */
        header_A_field_0 = 0,
        header_A_field_1 = 1,
        header_A_field_2 = 2,
        header_A_field_3 = 3,

        /* header type B */
        header_B_field_0 = 32, // = header_type_B << 5
        header_B_field_0 = 33,
        header_B_field_0 = 34
        header_B_field_0 = 35,
        ....
};

So we have:
proto_hdr_type = proto_hdr_field / 32
bit offset = proto_hdr_field % 32

To simply the protocol header's operations, couple help macros are added.
For example, to select src IP and dst port as input set for an IPv4/UDP
flow.

we have:
struct virtchnl_proto_hdr hdr[2];

VIRTCHNL_SET_PROTO_HDR_TYPE(&hdr[0], IPV4)
VIRTCHNL_ADD_PROTO_HDR_FIELD(&hdr[0], IPV4, SRC)

VIRTCHNL_SET_PROTO_HDR_TYPE(&hdr[1], UDP)
VIRTCHNL_ADD_PROTO_HDR_FIELD(&hdr[1], UDP, DST)

The byte array is used to store the protocol header of a training package.
The byte array must be network order.

The patch added virtual channel support for iAVF FDIR add/validate/delete
filter. iAVF FDIR is Flow Director for Intel Adaptive Virtual Function
which can direct Ethernet packets to the queues of the Network Interface
Card. Add/delete command is adding or deleting one rule for each virtual
channel message, while validate command is just verifying if this rule
is valid without any other operations.

To add or delete one rule, driver needs to config TCAM and Profile,
build training packets which contains the input set value, and send
the training packets through FDIR Tx queue. In addition, driver needs to
manage the software context to avoid adding duplicated rules, deleting
non-existent rule, input set conflicts and other invalid cases.

NOTE:
Supported pattern/actions and their parse functions are not be included in
this patch, they will be added in a separate one.

Signed-off-by: Jeff Guo <jia.guo@intel.com>
Signed-off-by: Yahui Cao <yahui.cao@intel.com>
Signed-off-by: Simei Su <simei.su@intel.com>
Signed-off-by: Beilei Xing <beilei.xing@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Tested-by: Chen Bo <BoX.C.Chen@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 1034 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.c
new file mode 100644
index 000000000000..6e7e8531d6ec
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.c
@@ -0,0 +1,1034 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2021, Intel Corporation. */
+
+#include "ice.h"
+#include "ice_base.h"
+#include "ice_lib.h"
+#include "ice_flow.h"
+
+#define to_fltr_conf_from_desc(p) \
+	container_of(p, struct virtchnl_fdir_fltr_conf, input)
+
+#define ICE_FLOW_PROF_TYPE_S	0
+#define ICE_FLOW_PROF_TYPE_M	(0xFFFFFFFFULL << ICE_FLOW_PROF_TYPE_S)
+#define ICE_FLOW_PROF_VSI_S	32
+#define ICE_FLOW_PROF_VSI_M	(0xFFFFFFFFULL << ICE_FLOW_PROF_VSI_S)
+
+/* Flow profile ID format:
+ * [0:31] - flow type, flow + tun_offs
+ * [32:63] - VSI index
+ */
+#define ICE_FLOW_PROF_FD(vsi, flow, tun_offs) \
+	((u64)(((((flow) + (tun_offs)) & ICE_FLOW_PROF_TYPE_M)) | \
+	      (((u64)(vsi) << ICE_FLOW_PROF_VSI_S) & ICE_FLOW_PROF_VSI_M)))
+
+struct virtchnl_fdir_fltr_conf {
+	struct ice_fdir_fltr input;
+};
+
+struct virtchnl_fdir_inset_map {
+	enum virtchnl_proto_hdr_field field;
+	enum ice_flow_field fld;
+};
+
+static const struct virtchnl_fdir_inset_map fdir_inset_map[] = {
+	{VIRTCHNL_PROTO_HDR_IPV4_SRC, ICE_FLOW_FIELD_IDX_IPV4_SA},
+	{VIRTCHNL_PROTO_HDR_IPV4_DST, ICE_FLOW_FIELD_IDX_IPV4_DA},
+	{VIRTCHNL_PROTO_HDR_IPV4_DSCP, ICE_FLOW_FIELD_IDX_IPV4_DSCP},
+	{VIRTCHNL_PROTO_HDR_IPV4_TTL, ICE_FLOW_FIELD_IDX_IPV4_TTL},
+	{VIRTCHNL_PROTO_HDR_IPV4_PROT, ICE_FLOW_FIELD_IDX_IPV4_PROT},
+	{VIRTCHNL_PROTO_HDR_IPV6_SRC, ICE_FLOW_FIELD_IDX_IPV6_SA},
+	{VIRTCHNL_PROTO_HDR_IPV6_DST, ICE_FLOW_FIELD_IDX_IPV6_DA},
+	{VIRTCHNL_PROTO_HDR_IPV6_TC, ICE_FLOW_FIELD_IDX_IPV6_DSCP},
+	{VIRTCHNL_PROTO_HDR_IPV6_HOP_LIMIT, ICE_FLOW_FIELD_IDX_IPV6_TTL},
+	{VIRTCHNL_PROTO_HDR_IPV6_PROT, ICE_FLOW_FIELD_IDX_IPV6_PROT},
+	{VIRTCHNL_PROTO_HDR_UDP_SRC_PORT, ICE_FLOW_FIELD_IDX_UDP_SRC_PORT},
+	{VIRTCHNL_PROTO_HDR_UDP_DST_PORT, ICE_FLOW_FIELD_IDX_UDP_DST_PORT},
+	{VIRTCHNL_PROTO_HDR_TCP_SRC_PORT, ICE_FLOW_FIELD_IDX_TCP_SRC_PORT},
+	{VIRTCHNL_PROTO_HDR_TCP_DST_PORT, ICE_FLOW_FIELD_IDX_TCP_DST_PORT},
+	{VIRTCHNL_PROTO_HDR_SCTP_SRC_PORT, ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT},
+	{VIRTCHNL_PROTO_HDR_SCTP_DST_PORT, ICE_FLOW_FIELD_IDX_SCTP_DST_PORT},
+};
+
+/**
+ * ice_vc_fdir_param_check
+ * @vf: pointer to the VF structure
+ * @vsi_id: VF relative VSI ID
+ *
+ * Check for the valid VSI ID, PF's state and VF's state
+ *
+ * Return: 0 on success, and -EINVAL on error.
+ */
+static int
+ice_vc_fdir_param_check(struct ice_vf *vf, u16 vsi_id)
+{
+	struct ice_pf *pf = vf->pf;
+
+	if (!test_bit(ICE_FLAG_FD_ENA, pf->flags))
+		return -EINVAL;
+
+	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states))
+		return -EINVAL;
+
+	if (!(vf->driver_caps & VIRTCHNL_VF_OFFLOAD_FDIR_PF))
+		return -EINVAL;
+
+	if (vsi_id != vf->lan_vsi_num)
+		return -EINVAL;
+
+	if (!ice_vc_isvalid_vsi_id(vf, vsi_id))
+		return -EINVAL;
+
+	if (!pf->vsi[vf->lan_vsi_idx])
+		return -EINVAL;
+
+	return 0;
+}
+
+/**
+ * ice_vf_start_ctrl_vsi
+ * @vf: pointer to the VF structure
+ *
+ * Allocate ctrl_vsi for the first time and open the ctrl_vsi port for VF
+ *
+ * Return: 0 on success, and other on error.
+ */
+static int ice_vf_start_ctrl_vsi(struct ice_vf *vf)
+{
+	struct ice_pf *pf = vf->pf;
+	struct ice_vsi *ctrl_vsi;
+	struct device *dev;
+	int err;
+
+	dev = ice_pf_to_dev(pf);
+	if (vf->ctrl_vsi_idx != ICE_NO_VSI)
+		return -EEXIST;
+
+	ctrl_vsi = ice_vf_ctrl_vsi_setup(vf);
+	if (!ctrl_vsi) {
+		dev_dbg(dev, "Could not setup control VSI for VF %d\n",
+			vf->vf_id);
+		return -ENOMEM;
+	}
+
+	err = ice_vsi_open_ctrl(ctrl_vsi);
+	if (err) {
+		dev_dbg(dev, "Could not open control VSI for VF %d\n",
+			vf->vf_id);
+		goto err_vsi_open;
+	}
+
+	return 0;
+
+err_vsi_open:
+	ice_vsi_release(ctrl_vsi);
+	if (vf->ctrl_vsi_idx != ICE_NO_VSI) {
+		pf->vsi[vf->ctrl_vsi_idx] = NULL;
+		vf->ctrl_vsi_idx = ICE_NO_VSI;
+	}
+	return err;
+}
+
+/**
+ * ice_vc_fdir_alloc_prof - allocate profile for this filter flow type
+ * @vf: pointer to the VF structure
+ * @flow: filter flow type
+ *
+ * Return: 0 on success, and other on error.
+ */
+static int
+ice_vc_fdir_alloc_prof(struct ice_vf *vf, enum ice_fltr_ptype flow)
+{
+	struct ice_vf_fdir *fdir = &vf->fdir;
+
+	if (!fdir->fdir_prof) {
+		fdir->fdir_prof = devm_kcalloc(ice_pf_to_dev(vf->pf),
+					       ICE_FLTR_PTYPE_MAX,
+					       sizeof(*fdir->fdir_prof),
+					       GFP_KERNEL);
+		if (!fdir->fdir_prof)
+			return -ENOMEM;
+	}
+
+	if (!fdir->fdir_prof[flow]) {
+		fdir->fdir_prof[flow] = devm_kzalloc(ice_pf_to_dev(vf->pf),
+						     sizeof(**fdir->fdir_prof),
+						     GFP_KERNEL);
+		if (!fdir->fdir_prof[flow])
+			return -ENOMEM;
+	}
+
+	return 0;
+}
+
+/**
+ * ice_vc_fdir_free_prof - free profile for this filter flow type
+ * @vf: pointer to the VF structure
+ * @flow: filter flow type
+ */
+static void
+ice_vc_fdir_free_prof(struct ice_vf *vf, enum ice_fltr_ptype flow)
+{
+	struct ice_vf_fdir *fdir = &vf->fdir;
+
+	if (!fdir->fdir_prof)
+		return;
+
+	if (!fdir->fdir_prof[flow])
+		return;
+
+	devm_kfree(ice_pf_to_dev(vf->pf), fdir->fdir_prof[flow]);
+	fdir->fdir_prof[flow] = NULL;
+}
+
+/**
+ * ice_vc_fdir_free_prof_all - free all the profile for this VF
+ * @vf: pointer to the VF structure
+ */
+static void ice_vc_fdir_free_prof_all(struct ice_vf *vf)
+{
+	struct ice_vf_fdir *fdir = &vf->fdir;
+	enum ice_fltr_ptype flow;
+
+	if (!fdir->fdir_prof)
+		return;
+
+	for (flow = ICE_FLTR_PTYPE_NONF_NONE; flow < ICE_FLTR_PTYPE_MAX; flow++)
+		ice_vc_fdir_free_prof(vf, flow);
+
+	devm_kfree(ice_pf_to_dev(vf->pf), fdir->fdir_prof);
+	fdir->fdir_prof = NULL;
+}
+
+/**
+ * ice_vc_fdir_parse_flow_fld
+ * @proto_hdr: virtual channel protocol filter header
+ * @conf: FDIR configuration for each filter
+ * @fld: field type array
+ * @fld_cnt: field counter
+ *
+ * Parse the virtual channel filter header and store them into field type array
+ *
+ * Return: 0 on success, and other on error.
+ */
+static int
+ice_vc_fdir_parse_flow_fld(struct virtchnl_proto_hdr *proto_hdr,
+			   struct virtchnl_fdir_fltr_conf *conf,
+			   enum ice_flow_field *fld, int *fld_cnt)
+{
+	struct virtchnl_proto_hdr hdr;
+	u32 i;
+
+	memcpy(&hdr, proto_hdr, sizeof(hdr));
+
+	for (i = 0; (i < ARRAY_SIZE(fdir_inset_map)) &&
+	     VIRTCHNL_GET_PROTO_HDR_FIELD(&hdr); i++)
+		if (VIRTCHNL_TEST_PROTO_HDR(&hdr, fdir_inset_map[i].field)) {
+			fld[*fld_cnt] = fdir_inset_map[i].fld;
+			*fld_cnt += 1;
+			if (*fld_cnt >= ICE_FLOW_FIELD_IDX_MAX)
+				return -EINVAL;
+			VIRTCHNL_DEL_PROTO_HDR_FIELD(&hdr,
+						     fdir_inset_map[i].field);
+		}
+
+	return 0;
+}
+
+/**
+ * ice_vc_fdir_set_flow_fld
+ * @vf: pointer to the VF structure
+ * @fltr: virtual channel add cmd buffer
+ * @conf: FDIR configuration for each filter
+ * @seg: array of one or more packet segments that describe the flow
+ *
+ * Parse the virtual channel add msg buffer's field vector and store them into
+ * flow's packet segment field
+ *
+ * Return: 0 on success, and other on error.
+ */
+static int
+ice_vc_fdir_set_flow_fld(struct ice_vf *vf, struct virtchnl_fdir_add *fltr,
+			 struct virtchnl_fdir_fltr_conf *conf,
+			 struct ice_flow_seg_info *seg)
+{
+	struct virtchnl_fdir_rule *rule = &fltr->rule_cfg;
+	enum ice_flow_field fld[ICE_FLOW_FIELD_IDX_MAX];
+	struct device *dev = ice_pf_to_dev(vf->pf);
+	struct virtchnl_proto_hdrs *proto;
+	int fld_cnt = 0;
+	int i;
+
+	proto = &rule->proto_hdrs;
+	for (i = 0; i < proto->count; i++) {
+		struct virtchnl_proto_hdr *hdr = &proto->proto_hdr[i];
+		int ret;
+
+		ret = ice_vc_fdir_parse_flow_fld(hdr, conf, fld, &fld_cnt);
+		if (ret)
+			return ret;
+	}
+
+	if (fld_cnt == 0) {
+		dev_dbg(dev, "Empty input set for VF %d\n", vf->vf_id);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < fld_cnt; i++)
+		ice_flow_set_fld(seg, fld[i],
+				 ICE_FLOW_FLD_OFF_INVAL,
+				 ICE_FLOW_FLD_OFF_INVAL,
+				 ICE_FLOW_FLD_OFF_INVAL, false);
+
+	return 0;
+}
+
+/**
+ * ice_vc_fdir_set_flow_hdr - config the flow's packet segment header
+ * @vf: pointer to the VF structure
+ * @conf: FDIR configuration for each filter
+ * @seg: array of one or more packet segments that describe the flow
+ *
+ * Return: 0 on success, and other on error.
+ */
+static int
+ice_vc_fdir_set_flow_hdr(struct ice_vf *vf,
+			 struct virtchnl_fdir_fltr_conf *conf,
+			 struct ice_flow_seg_info *seg)
+{
+	enum ice_fltr_ptype flow = conf->input.flow_type;
+	struct device *dev = ice_pf_to_dev(vf->pf);
+
+	switch (flow) {
+	case ICE_FLTR_PTYPE_NONF_IPV4_OTHER:
+		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_IPV4 |
+				  ICE_FLOW_SEG_HDR_IPV_OTHER);
+		break;
+	case ICE_FLTR_PTYPE_NONF_IPV4_TCP:
+		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_TCP |
+				  ICE_FLOW_SEG_HDR_IPV4 |
+				  ICE_FLOW_SEG_HDR_IPV_OTHER);
+		break;
+	case ICE_FLTR_PTYPE_NONF_IPV4_UDP:
+		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_UDP |
+				  ICE_FLOW_SEG_HDR_IPV4 |
+				  ICE_FLOW_SEG_HDR_IPV_OTHER);
+		break;
+	case ICE_FLTR_PTYPE_NONF_IPV4_SCTP:
+		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_SCTP |
+				  ICE_FLOW_SEG_HDR_IPV4 |
+				  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_OTHER);
+		break;
+	case ICE_FLTR_PTYPE_NONF_IPV6_TCP:
+		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_TCP |
+				  ICE_FLOW_SEG_HDR_IPV6 |
+				  ICE_FLOW_SEG_HDR_IPV_OTHER);
+		break;
+	case ICE_FLTR_PTYPE_NONF_IPV6_UDP:
+		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_UDP |
+				  ICE_FLOW_SEG_HDR_IPV6 |
+				  ICE_FLOW_SEG_HDR_IPV_OTHER);
+		break;
+	case ICE_FLTR_PTYPE_NONF_IPV6_SCTP:
+		ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_SCTP |
+				  ICE_FLOW_SEG_HDR_IPV6 |
+				  ICE_FLOW_SEG_HDR_IPV_OTHER);
+		break;
+	default:
+		dev_dbg(dev, "Invalid flow type 0x%x for VF %d failed\n",
+			flow, vf->vf_id);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/**
+ * ice_vc_fdir_rem_prof - remove profile for this filter flow type
+ * @vf: pointer to the VF structure
+ * @flow: filter flow type
+ * @tun: 0 implies non-tunnel type filter, 1 implies tunnel type filter
+ */
+static void
+ice_vc_fdir_rem_prof(struct ice_vf *vf, enum ice_fltr_ptype flow, int tun)
+{
+	struct ice_vf_fdir *fdir = &vf->fdir;
+	struct ice_fd_hw_prof *vf_prof;
+	struct ice_pf *pf = vf->pf;
+	struct ice_vsi *vf_vsi;
+	struct device *dev;
+	struct ice_hw *hw;
+	u64 prof_id;
+	int i;
+
+	dev = ice_pf_to_dev(pf);
+	hw = &pf->hw;
+	if (!fdir->fdir_prof || !fdir->fdir_prof[flow])
+		return;
+
+	vf_prof = fdir->fdir_prof[flow];
+
+	vf_vsi = pf->vsi[vf->lan_vsi_idx];
+	if (!vf_vsi) {
+		dev_dbg(dev, "NULL vf %d vsi pointer\n", vf->vf_id);
+		return;
+	}
+
+	if (!fdir->prof_entry_cnt[flow][tun])
+		return;
+
+	prof_id = ICE_FLOW_PROF_FD(vf_vsi->vsi_num,
+				   flow, tun ? ICE_FLTR_PTYPE_MAX : 0);
+
+	for (i = 0; i < fdir->prof_entry_cnt[flow][tun]; i++)
+		if (vf_prof->entry_h[i][tun]) {
+			u16 vsi_num = ice_get_hw_vsi_num(hw, vf_prof->vsi_h[i]);
+
+			ice_rem_prof_id_flow(hw, ICE_BLK_FD, vsi_num, prof_id);
+			ice_flow_rem_entry(hw, ICE_BLK_FD,
+					   vf_prof->entry_h[i][tun]);
+			vf_prof->entry_h[i][tun] = 0;
+		}
+
+	ice_flow_rem_prof(hw, ICE_BLK_FD, prof_id);
+	devm_kfree(dev, vf_prof->fdir_seg[tun]);
+	vf_prof->fdir_seg[tun] = NULL;
+
+	for (i = 0; i < vf_prof->cnt; i++)
+		vf_prof->vsi_h[i] = 0;
+
+	fdir->prof_entry_cnt[flow][tun] = 0;
+}
+
+/**
+ * ice_vc_fdir_rem_prof_all - remove profile for this VF
+ * @vf: pointer to the VF structure
+ */
+static void ice_vc_fdir_rem_prof_all(struct ice_vf *vf)
+{
+	enum ice_fltr_ptype flow;
+
+	for (flow = ICE_FLTR_PTYPE_NONF_NONE;
+	     flow < ICE_FLTR_PTYPE_MAX; flow++) {
+		ice_vc_fdir_rem_prof(vf, flow, 0);
+		ice_vc_fdir_rem_prof(vf, flow, 1);
+	}
+}
+
+/**
+ * ice_vc_fdir_write_flow_prof
+ * @vf: pointer to the VF structure
+ * @flow: filter flow type
+ * @seg: array of one or more packet segments that describe the flow
+ * @tun: 0 implies non-tunnel type filter, 1 implies tunnel type filter
+ *
+ * Write the flow's profile config and packet segment into the hardware
+ *
+ * Return: 0 on success, and other on error.
+ */
+static int
+ice_vc_fdir_write_flow_prof(struct ice_vf *vf, enum ice_fltr_ptype flow,
+			    struct ice_flow_seg_info *seg, int tun)
+{
+	struct ice_vf_fdir *fdir = &vf->fdir;
+	struct ice_vsi *vf_vsi, *ctrl_vsi;
+	struct ice_flow_seg_info *old_seg;
+	struct ice_flow_prof *prof = NULL;
+	struct ice_fd_hw_prof *vf_prof;
+	enum ice_status status;
+	struct device *dev;
+	struct ice_pf *pf;
+	struct ice_hw *hw;
+	u64 entry1_h = 0;
+	u64 entry2_h = 0;
+	u64 prof_id;
+	int ret;
+
+	pf = vf->pf;
+	dev = ice_pf_to_dev(pf);
+	hw = &pf->hw;
+	vf_vsi = pf->vsi[vf->lan_vsi_idx];
+	if (!vf_vsi)
+		return -EINVAL;
+
+	ctrl_vsi = pf->vsi[vf->ctrl_vsi_idx];
+	if (!ctrl_vsi)
+		return -EINVAL;
+
+	vf_prof = fdir->fdir_prof[flow];
+	old_seg = vf_prof->fdir_seg[tun];
+	if (old_seg) {
+		if (!memcmp(old_seg, seg, sizeof(*seg))) {
+			dev_dbg(dev, "Duplicated profile for VF %d!\n",
+				vf->vf_id);
+			return -EEXIST;
+		}
+
+		if (fdir->fdir_fltr_cnt[flow][tun]) {
+			ret = -EINVAL;
+			dev_dbg(dev, "Input set conflicts for VF %d\n",
+				vf->vf_id);
+			goto err_exit;
+		}
+
+		/* remove previously allocated profile */
+		ice_vc_fdir_rem_prof(vf, flow, tun);
+	}
+
+	prof_id = ICE_FLOW_PROF_FD(vf_vsi->vsi_num, flow,
+				   tun ? ICE_FLTR_PTYPE_MAX : 0);
+
+	status = ice_flow_add_prof(hw, ICE_BLK_FD, ICE_FLOW_RX, prof_id, seg,
+				   tun + 1, &prof);
+	ret = ice_status_to_errno(status);
+	if (ret) {
+		dev_dbg(dev, "Could not add VSI flow 0x%x for VF %d\n",
+			flow, vf->vf_id);
+		goto err_exit;
+	}
+
+	status = ice_flow_add_entry(hw, ICE_BLK_FD, prof_id, vf_vsi->idx,
+				    vf_vsi->idx, ICE_FLOW_PRIO_NORMAL,
+				    seg, &entry1_h);
+	ret = ice_status_to_errno(status);
+	if (ret) {
+		dev_dbg(dev, "Could not add flow 0x%x VSI entry for VF %d\n",
+			flow, vf->vf_id);
+		goto err_prof;
+	}
+
+	status = ice_flow_add_entry(hw, ICE_BLK_FD, prof_id, vf_vsi->idx,
+				    ctrl_vsi->idx, ICE_FLOW_PRIO_NORMAL,
+				    seg, &entry2_h);
+	ret = ice_status_to_errno(status);
+	if (ret) {
+		dev_dbg(dev,
+			"Could not add flow 0x%x Ctrl VSI entry for VF %d\n",
+			flow, vf->vf_id);
+		goto err_entry_1;
+	}
+
+	vf_prof->fdir_seg[tun] = seg;
+	vf_prof->cnt = 0;
+	fdir->prof_entry_cnt[flow][tun] = 0;
+
+	vf_prof->entry_h[vf_prof->cnt][tun] = entry1_h;
+	vf_prof->vsi_h[vf_prof->cnt] = vf_vsi->idx;
+	vf_prof->cnt++;
+	fdir->prof_entry_cnt[flow][tun]++;
+
+	vf_prof->entry_h[vf_prof->cnt][tun] = entry2_h;
+	vf_prof->vsi_h[vf_prof->cnt] = ctrl_vsi->idx;
+	vf_prof->cnt++;
+	fdir->prof_entry_cnt[flow][tun]++;
+
+	return 0;
+
+err_entry_1:
+	ice_rem_prof_id_flow(hw, ICE_BLK_FD,
+			     ice_get_hw_vsi_num(hw, vf_vsi->idx), prof_id);
+	ice_flow_rem_entry(hw, ICE_BLK_FD, entry1_h);
+err_prof:
+	ice_flow_rem_prof(hw, ICE_BLK_FD, prof_id);
+err_exit:
+	return ret;
+}
+
+/**
+ * ice_vc_fdir_config_input_set
+ * @vf: pointer to the VF structure
+ * @fltr: virtual channel add cmd buffer
+ * @conf: FDIR configuration for each filter
+ * @tun: 0 implies non-tunnel type filter, 1 implies tunnel type filter
+ *
+ * Config the input set type and value for virtual channel add msg buffer
+ *
+ * Return: 0 on success, and other on error.
+ */
+static int
+ice_vc_fdir_config_input_set(struct ice_vf *vf, struct virtchnl_fdir_add *fltr,
+			     struct virtchnl_fdir_fltr_conf *conf, int tun)
+{
+	struct ice_fdir_fltr *input = &conf->input;
+	struct device *dev = ice_pf_to_dev(vf->pf);
+	struct ice_flow_seg_info *seg;
+	enum ice_fltr_ptype flow;
+	int ret;
+
+	flow = input->flow_type;
+	ret = ice_vc_fdir_alloc_prof(vf, flow);
+	if (ret) {
+		dev_dbg(dev, "Alloc flow prof for VF %d failed\n", vf->vf_id);
+		return ret;
+	}
+
+	seg = devm_kzalloc(dev, sizeof(*seg), GFP_KERNEL);
+	if (!seg)
+		return -ENOMEM;
+
+	ret = ice_vc_fdir_set_flow_fld(vf, fltr, conf, seg);
+	if (ret) {
+		dev_dbg(dev, "Set flow field for VF %d failed\n", vf->vf_id);
+		goto err_exit;
+	}
+
+	ret = ice_vc_fdir_set_flow_hdr(vf, conf, seg);
+	if (ret) {
+		dev_dbg(dev, "Set flow hdr for VF %d failed\n", vf->vf_id);
+		goto err_exit;
+	}
+
+	ret = ice_vc_fdir_write_flow_prof(vf, flow, seg, tun);
+	if (ret == -EEXIST) {
+		devm_kfree(dev, seg);
+	} else if (ret) {
+		dev_dbg(dev, "Write flow profile for VF %d failed\n",
+			vf->vf_id);
+		goto err_exit;
+	}
+
+	return 0;
+
+err_exit:
+	devm_kfree(dev, seg);
+	return ret;
+}
+
+/**
+ * ice_vc_validate_fdir_fltr - validate the virtual channel filter
+ * @vf: pointer to the VF info
+ * @fltr: virtual channel add cmd buffer
+ * @conf: FDIR configuration for each filter
+ *
+ * Return: 0 on success, and other on error.
+ */
+static int
+ice_vc_validate_fdir_fltr(struct ice_vf *vf, struct virtchnl_fdir_add *fltr,
+			  struct virtchnl_fdir_fltr_conf *conf)
+{
+	/* Todo: rule validation */
+	return -EINVAL;
+}
+
+/**
+ * ice_vc_fdir_comp_rules - compare if two filter rules have the same value
+ * @conf_a: FDIR configuration for filter a
+ * @conf_b: FDIR configuration for filter b
+ *
+ * Return: 0 on success, and other on error.
+ */
+static bool
+ice_vc_fdir_comp_rules(struct virtchnl_fdir_fltr_conf *conf_a,
+		       struct virtchnl_fdir_fltr_conf *conf_b)
+{
+	struct ice_fdir_fltr *a = &conf_a->input;
+	struct ice_fdir_fltr *b = &conf_b->input;
+
+	if (a->flow_type != b->flow_type)
+		return false;
+	if (memcmp(&a->ip, &b->ip, sizeof(a->ip)))
+		return false;
+	if (memcmp(&a->mask, &b->mask, sizeof(a->mask)))
+		return false;
+	if (memcmp(&a->ext_data, &b->ext_data, sizeof(a->ext_data)))
+		return false;
+	if (memcmp(&a->ext_mask, &b->ext_mask, sizeof(a->ext_mask)))
+		return false;
+
+	return true;
+}
+
+/**
+ * ice_vc_fdir_is_dup_fltr
+ * @vf: pointer to the VF info
+ * @conf: FDIR configuration for each filter
+ *
+ * Check if there is duplicated rule with same conf value
+ *
+ * Return: 0 true success, and false on error.
+ */
+static bool
+ice_vc_fdir_is_dup_fltr(struct ice_vf *vf, struct virtchnl_fdir_fltr_conf *conf)
+{
+	struct ice_fdir_fltr *desc;
+	bool ret;
+
+	list_for_each_entry(desc, &vf->fdir.fdir_rule_list, fltr_node) {
+		struct virtchnl_fdir_fltr_conf *node =
+				to_fltr_conf_from_desc(desc);
+
+		ret = ice_vc_fdir_comp_rules(node, conf);
+		if (ret)
+			return true;
+	}
+
+	return false;
+}
+
+/**
+ * ice_vc_fdir_insert_entry
+ * @vf: pointer to the VF info
+ * @conf: FDIR configuration for each filter
+ * @id: pointer to ID value allocated by driver
+ *
+ * Insert FDIR conf entry into list and allocate ID for this filter
+ *
+ * Return: 0 true success, and other on error.
+ */
+static int
+ice_vc_fdir_insert_entry(struct ice_vf *vf,
+			 struct virtchnl_fdir_fltr_conf *conf, u32 *id)
+{
+	struct ice_fdir_fltr *input = &conf->input;
+	int i;
+
+	/* alloc ID corresponding with conf */
+	i = idr_alloc(&vf->fdir.fdir_rule_idr, conf, 0,
+		      ICE_FDIR_MAX_FLTRS, GFP_KERNEL);
+	if (i < 0)
+		return -EINVAL;
+	*id = i;
+
+	list_add(&input->fltr_node, &vf->fdir.fdir_rule_list);
+	return 0;
+}
+
+/**
+ * ice_vc_fdir_remove_entry - remove FDIR conf entry by ID value
+ * @vf: pointer to the VF info
+ * @conf: FDIR configuration for each filter
+ * @id: filter rule's ID
+ */
+static void
+ice_vc_fdir_remove_entry(struct ice_vf *vf,
+			 struct virtchnl_fdir_fltr_conf *conf, u32 id)
+{
+	struct ice_fdir_fltr *input = &conf->input;
+
+	idr_remove(&vf->fdir.fdir_rule_idr, id);
+	list_del(&input->fltr_node);
+}
+
+/**
+ * ice_vc_fdir_lookup_entry - lookup FDIR conf entry by ID value
+ * @vf: pointer to the VF info
+ * @id: filter rule's ID
+ *
+ * Return: NULL on error, and other on success.
+ */
+static struct virtchnl_fdir_fltr_conf *
+ice_vc_fdir_lookup_entry(struct ice_vf *vf, u32 id)
+{
+	return idr_find(&vf->fdir.fdir_rule_idr, id);
+}
+
+/**
+ * ice_vc_fdir_flush_entry - remove all FDIR conf entry
+ * @vf: pointer to the VF info
+ */
+static void ice_vc_fdir_flush_entry(struct ice_vf *vf)
+{
+	struct virtchnl_fdir_fltr_conf *conf;
+	struct ice_fdir_fltr *desc, *temp;
+
+	list_for_each_entry_safe(desc, temp,
+				 &vf->fdir.fdir_rule_list, fltr_node) {
+		conf = to_fltr_conf_from_desc(desc);
+		list_del(&desc->fltr_node);
+		devm_kfree(ice_pf_to_dev(vf->pf), conf);
+	}
+}
+
+/**
+ * ice_vc_fdir_write_fltr - write filter rule into hardware
+ * @vf: pointer to the VF info
+ * @conf: FDIR configuration for each filter
+ * @add: true implies add rule, false implies del rules
+ * @is_tun: false implies non-tunnel type filter, true implies tunnel filter
+ *
+ * Return: 0 on success, and other on error.
+ */
+static int ice_vc_fdir_write_fltr(struct ice_vf *vf,
+				  struct virtchnl_fdir_fltr_conf *conf,
+				  bool add, bool is_tun)
+{
+	struct ice_fdir_fltr *input = &conf->input;
+	struct ice_vsi *vsi, *ctrl_vsi;
+	struct ice_fltr_desc desc;
+	enum ice_status status;
+	struct device *dev;
+	struct ice_pf *pf;
+	struct ice_hw *hw;
+	int ret;
+	u8 *pkt;
+
+	pf = vf->pf;
+	dev = ice_pf_to_dev(pf);
+	hw = &pf->hw;
+	vsi = pf->vsi[vf->lan_vsi_idx];
+	if (!vsi) {
+		dev_dbg(dev, "Invalid vsi for VF %d\n", vf->vf_id);
+		return -EINVAL;
+	}
+
+	input->dest_vsi = vsi->idx;
+	input->comp_report = ICE_FXD_FLTR_QW0_COMP_REPORT_SW_FAIL;
+
+	ctrl_vsi = pf->vsi[vf->ctrl_vsi_idx];
+	if (!ctrl_vsi) {
+		dev_dbg(dev, "Invalid ctrl_vsi for VF %d\n", vf->vf_id);
+		return -EINVAL;
+	}
+
+	pkt = devm_kzalloc(dev, ICE_FDIR_MAX_RAW_PKT_SIZE, GFP_KERNEL);
+	if (!pkt)
+		return -ENOMEM;
+
+	ice_fdir_get_prgm_desc(hw, input, &desc, add);
+	status = ice_fdir_get_gen_prgm_pkt(hw, input, pkt, false, is_tun);
+	ret = ice_status_to_errno(status);
+	if (ret) {
+		dev_dbg(dev, "Gen training pkt for VF %d ptype %d failed\n",
+			vf->vf_id, input->flow_type);
+		goto err_free_pkt;
+	}
+
+	ret = ice_prgm_fdir_fltr(ctrl_vsi, &desc, pkt);
+	if (ret)
+		goto err_free_pkt;
+
+	return 0;
+
+err_free_pkt:
+	devm_kfree(dev, pkt);
+	return ret;
+}
+
+/**
+ * ice_vc_add_fdir_fltr - add a FDIR filter for VF by the msg buffer
+ * @vf: pointer to the VF info
+ * @msg: pointer to the msg buffer
+ *
+ * Return: 0 on success, and other on error.
+ */
+int ice_vc_add_fdir_fltr(struct ice_vf *vf, u8 *msg)
+{
+	struct virtchnl_fdir_add *fltr = (struct virtchnl_fdir_add *)msg;
+	struct virtchnl_fdir_add *stat = NULL;
+	struct virtchnl_fdir_fltr_conf *conf;
+	enum virtchnl_status_code v_ret;
+	struct device *dev;
+	struct ice_pf *pf;
+	int is_tun = 0;
+	int len = 0;
+	int ret;
+
+	pf = vf->pf;
+	dev = ice_pf_to_dev(pf);
+	ret = ice_vc_fdir_param_check(vf, fltr->vsi_id);
+	if (ret) {
+		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
+		dev_dbg(dev, "Parameter check for VF %d failed\n", vf->vf_id);
+		goto err_exit;
+	}
+
+	ret = ice_vf_start_ctrl_vsi(vf);
+	if (ret && (ret != -EEXIST)) {
+		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
+		dev_err(dev, "Init FDIR for VF %d failed, ret:%d\n",
+			vf->vf_id, ret);
+		goto err_exit;
+	}
+
+	stat = kzalloc(sizeof(*stat), GFP_KERNEL);
+	if (!stat) {
+		v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
+		dev_dbg(dev, "Alloc stat for VF %d failed\n", vf->vf_id);
+		goto err_exit;
+	}
+
+	conf = devm_kzalloc(dev, sizeof(*conf), GFP_KERNEL);
+	if (!conf) {
+		v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
+		dev_dbg(dev, "Alloc conf for VF %d failed\n", vf->vf_id);
+		goto err_exit;
+	}
+
+	len = sizeof(*stat);
+	ret = ice_vc_validate_fdir_fltr(vf, fltr, conf);
+	if (ret) {
+		v_ret = VIRTCHNL_STATUS_SUCCESS;
+		stat->status = VIRTCHNL_FDIR_FAILURE_RULE_INVALID;
+		dev_dbg(dev, "Invalid FDIR filter from VF %d\n", vf->vf_id);
+		goto err_free_conf;
+	}
+
+	if (fltr->validate_only) {
+		v_ret = VIRTCHNL_STATUS_SUCCESS;
+		stat->status = VIRTCHNL_FDIR_SUCCESS;
+		devm_kfree(dev, conf);
+		ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_FDIR_FILTER,
+					    v_ret, (u8 *)stat, len);
+		goto exit;
+	}
+
+	ret = ice_vc_fdir_config_input_set(vf, fltr, conf, is_tun);
+	if (ret) {
+		v_ret = VIRTCHNL_STATUS_SUCCESS;
+		stat->status = VIRTCHNL_FDIR_FAILURE_RULE_CONFLICT;
+		dev_err(dev, "VF %d: FDIR input set configure failed, ret:%d\n",
+			vf->vf_id, ret);
+		goto err_free_conf;
+	}
+
+	ret = ice_vc_fdir_is_dup_fltr(vf, conf);
+	if (ret) {
+		v_ret = VIRTCHNL_STATUS_SUCCESS;
+		stat->status = VIRTCHNL_FDIR_FAILURE_RULE_EXIST;
+		dev_dbg(dev, "VF %d: duplicated FDIR rule detected\n",
+			vf->vf_id);
+		goto err_free_conf;
+	}
+
+	ret = ice_vc_fdir_insert_entry(vf, conf, &stat->flow_id);
+	if (ret) {
+		v_ret = VIRTCHNL_STATUS_SUCCESS;
+		stat->status = VIRTCHNL_FDIR_FAILURE_RULE_NORESOURCE;
+		dev_dbg(dev, "VF %d: insert FDIR list failed\n", vf->vf_id);
+		goto err_free_conf;
+	}
+
+	ret = ice_vc_fdir_write_fltr(vf, conf, true, is_tun);
+	if (ret) {
+		v_ret = VIRTCHNL_STATUS_SUCCESS;
+		stat->status = VIRTCHNL_FDIR_FAILURE_RULE_NORESOURCE;
+		dev_err(dev, "VF %d: writing FDIR rule failed, ret:%d\n",
+			vf->vf_id, ret);
+		goto err_rem_entry;
+	}
+
+	vf->fdir.fdir_fltr_cnt[conf->input.flow_type][is_tun]++;
+
+	v_ret = VIRTCHNL_STATUS_SUCCESS;
+	stat->status = VIRTCHNL_FDIR_SUCCESS;
+exit:
+	ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_FDIR_FILTER, v_ret,
+				    (u8 *)stat, len);
+	kfree(stat);
+	return ret;
+
+err_rem_entry:
+	ice_vc_fdir_remove_entry(vf, conf, stat->flow_id);
+err_free_conf:
+	devm_kfree(dev, conf);
+err_exit:
+	ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_FDIR_FILTER, v_ret,
+				    (u8 *)stat, len);
+	kfree(stat);
+	return ret;
+}
+
+/**
+ * ice_vc_del_fdir_fltr - delete a FDIR filter for VF by the msg buffer
+ * @vf: pointer to the VF info
+ * @msg: pointer to the msg buffer
+ *
+ * Return: 0 on success, and other on error.
+ */
+int ice_vc_del_fdir_fltr(struct ice_vf *vf, u8 *msg)
+{
+	struct virtchnl_fdir_del *fltr = (struct virtchnl_fdir_del *)msg;
+	struct virtchnl_fdir_del *stat = NULL;
+	struct virtchnl_fdir_fltr_conf *conf;
+	enum virtchnl_status_code v_ret;
+	struct device *dev;
+	struct ice_pf *pf;
+	int is_tun = 0;
+	int len = 0;
+	int ret;
+
+	pf = vf->pf;
+	dev = ice_pf_to_dev(pf);
+	ret = ice_vc_fdir_param_check(vf, fltr->vsi_id);
+	if (ret) {
+		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
+		dev_dbg(dev, "Parameter check for VF %d failed\n", vf->vf_id);
+		goto err_exit;
+	}
+
+	stat = kzalloc(sizeof(*stat), GFP_KERNEL);
+	if (!stat) {
+		v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY;
+		dev_dbg(dev, "Alloc stat for VF %d failed\n", vf->vf_id);
+		goto err_exit;
+	}
+
+	len = sizeof(*stat);
+
+	conf = ice_vc_fdir_lookup_entry(vf, fltr->flow_id);
+	if (!conf) {
+		v_ret = VIRTCHNL_STATUS_SUCCESS;
+		stat->status = VIRTCHNL_FDIR_FAILURE_RULE_NONEXIST;
+		dev_dbg(dev, "VF %d: FDIR invalid flow_id:0x%X\n",
+			vf->vf_id, fltr->flow_id);
+		goto err_exit;
+	}
+
+	/* Just return failure when ctrl_vsi idx is invalid */
+	if (vf->ctrl_vsi_idx == ICE_NO_VSI) {
+		v_ret = VIRTCHNL_STATUS_SUCCESS;
+		stat->status = VIRTCHNL_FDIR_FAILURE_RULE_NORESOURCE;
+		dev_err(dev, "Invalid FDIR ctrl_vsi for VF %d\n", vf->vf_id);
+		goto err_exit;
+	}
+
+	ret = ice_vc_fdir_write_fltr(vf, conf, false, is_tun);
+	if (ret) {
+		v_ret = VIRTCHNL_STATUS_SUCCESS;
+		stat->status = VIRTCHNL_FDIR_FAILURE_RULE_NORESOURCE;
+		dev_err(dev, "VF %d: writing FDIR rule failed, ret:%d\n",
+			vf->vf_id, ret);
+		goto err_exit;
+	}
+
+	ice_vc_fdir_remove_entry(vf, conf, fltr->flow_id);
+	devm_kfree(dev, conf);
+	vf->fdir.fdir_fltr_cnt[conf->input.flow_type][is_tun]--;
+
+	v_ret = VIRTCHNL_STATUS_SUCCESS;
+	stat->status = VIRTCHNL_FDIR_SUCCESS;
+
+err_exit:
+	ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DEL_FDIR_FILTER, v_ret,
+				    (u8 *)stat, len);
+	kfree(stat);
+	return ret;
+}
+
+/**
+ * ice_vf_fdir_init - init FDIR resource for VF
+ * @vf: pointer to the VF info
+ */
+void ice_vf_fdir_init(struct ice_vf *vf)
+{
+	struct ice_vf_fdir *fdir = &vf->fdir;
+
+	idr_init(&fdir->fdir_rule_idr);
+	INIT_LIST_HEAD(&fdir->fdir_rule_list);
+}
+
+/**
+ * ice_vf_fdir_exit - destroy FDIR resource for VF
+ * @vf: pointer to the VF info
+ */
+void ice_vf_fdir_exit(struct ice_vf *vf)
+{
+	ice_vc_fdir_flush_entry(vf);
+	idr_destroy(&vf->fdir.fdir_rule_idr);
+	ice_vc_fdir_rem_prof_all(vf);
+	ice_vc_fdir_free_prof_all(vf);
+}