ice: add parser internal helper functions

Add the following internal helper functions:

- ice_bst_tcam_match():
  to perform ternary match on boost TCAM.

- ice_pg_cam_match():
  to perform parse graph key match in cam table.

- ice_pg_nm_cam_match():
  to perform parse graph key no match in cam table.

- ice_ptype_mk_tcam_match():
  to perform ptype markers match in tcam table.

- ice_flg_redirect():
  to redirect parser flags to packet flags.

- ice_xlt_kb_flag_get():
  to aggregate 64 bit packet flag into 16 bit key builder flags.

Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 36 insertions, 15 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_parser.h b/drivers/net/ethernet/intel/ice/ice_parser.h
index 6e8054d59644..1d2453890d8e 100644
--- a/drivers/net/ethernet/intel/ice/ice_parser.h
+++ b/drivers/net/ethernet/intel/ice/ice_parser.h
@@ -197,25 +197,29 @@ struct ice_metainit_item {
 
 struct ice_pg_cam_key {
 	bool valid;
-	u16 node_id;	/* Node ID of protocol in parse graph */
-	bool flag0;
-	bool flag1;
-	bool flag2;
-	bool flag3;
-	u8 boost_idx;	/* Boost TCAM match index */
-	u16 alu_reg;
-	u32 next_proto;	/* next Protocol value */
+	struct_group_attr(val, __packed,
+		u16 node_id;	/* Node ID of protocol in parse graph */
+		bool flag0;
+		bool flag1;
+		bool flag2;
+		bool flag3;
+		u8 boost_idx;	/* Boost TCAM match index */
+		u16 alu_reg;
+		u32 next_proto;	/* next Protocol value (must be last) */
+	);
 };
 
 struct ice_pg_nm_cam_key {
 	bool valid;
-	u16 node_id;
-	bool flag0;
-	bool flag1;
-	bool flag2;
-	bool flag3;
-	u8 boost_idx;
-	u16 alu_reg;
+	struct_group_attr(val, __packed,
+		u16 node_id;
+		bool flag0;
+		bool flag1;
+		bool flag2;
+		bool flag3;
+		u8 boost_idx;
+		u16 alu_reg;
+	);
 };
 
 struct ice_pg_cam_action {
@@ -244,6 +248,12 @@ struct ice_pg_nm_cam_item {
 	struct ice_pg_cam_action action;
 };
 
+struct ice_pg_cam_item *ice_pg_cam_match(struct ice_pg_cam_item *table,
+					 int size, struct ice_pg_cam_key *key);
+struct ice_pg_nm_cam_item *
+ice_pg_nm_cam_match(struct ice_pg_nm_cam_item *table, int size,
+		    struct ice_pg_cam_key *key);
+
 /*** ICE_SID_RXPARSER_BOOST_TCAM and ICE_SID_LBL_RXPARSER_TMEM sections ***/
 #define ICE_BST_TCAM_TABLE_SIZE		256
 #define ICE_BST_TCAM_KEY_SIZE		20
@@ -269,6 +279,9 @@ struct ice_lbl_item {
 	char label[ICE_LBL_LEN];
 };
 
+struct ice_bst_tcam_item *
+ice_bst_tcam_match(struct ice_bst_tcam_item *tcam_table, u8 *pat);
+
 /*** ICE_SID_RXPARSER_MARKER_PTYPE section ***/
 #define ICE_PTYPE_MK_TCAM_TABLE_SIZE	1024
 #define ICE_PTYPE_MK_TCAM_KEY_SIZE	10
@@ -280,6 +293,9 @@ struct ice_ptype_mk_tcam_item {
 	u8 key_inv[ICE_PTYPE_MK_TCAM_KEY_SIZE];
 } __packed;
 
+struct ice_ptype_mk_tcam_item *
+ice_ptype_mk_tcam_match(struct ice_ptype_mk_tcam_item *table,
+			u8 *pat, int len);
 /*** ICE_SID_RXPARSER_MARKER_GRP section ***/
 #define ICE_MK_GRP_TABLE_SIZE		128
 #define ICE_MK_COUNT_PER_GRP		8
@@ -308,6 +324,7 @@ struct ice_proto_grp_item {
 
 /*** ICE_SID_RXPARSER_FLAG_REDIR section ***/
 #define ICE_FLG_RD_TABLE_SIZE	64
+#define ICE_FLG_RDT_SIZE	64
 
 /* Flags Redirection item */
 struct ice_flg_rd_item {
@@ -316,6 +333,8 @@ struct ice_flg_rd_item {
 	u8 intr_flg_id;	/* Internal Flag ID */
 };
 
+u64 ice_flg_redirect(struct ice_flg_rd_item *table, u64 psr_flg);
+
 /*** ICE_SID_XLT_KEY_BUILDER_SW, ICE_SID_XLT_KEY_BUILDER_ACL,
  * ICE_SID_XLT_KEY_BUILDER_FD and ICE_SID_XLT_KEY_BUILDER_RSS
  * sections ***/
@@ -341,6 +360,8 @@ struct ice_xlt_kb {
 	struct ice_xlt_kb_entry entries[ICE_XLT_KB_TBL_CNT];
 };
 
+u16 ice_xlt_kb_flag_get(struct ice_xlt_kb *kb, u64 pkt_flag);
+
 /*** Parser API ***/
 struct ice_parser {
 	struct ice_hw *hw; /* pointer to the hardware structure */