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Date: Mon, 21 Aug 2023 16:14:34 +0800
From: Junfeng Guo <junfeng.guo@...el.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
anthony.l.nguyen@...el.com,
jesse.brandeburg@...el.com,
qi.z.zhang@...el.com,
ivecera@...hat.com,
sridhar.samudrala@...el.com,
horms@...nel.org,
Junfeng Guo <junfeng.guo@...el.com>
Subject: [PATCH iwl-next v6 11/15] ice: add internal help functions
Add below internal helper function:
- [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_flg_get]:
to aggregate 64 bit packet flag into 16 bit key builder flags.
Signed-off-by: Junfeng Guo <junfeng.guo@...el.com>
---
drivers/net/ethernet/intel/ice/ice_bst_tcam.c | 23 ++++++
drivers/net/ethernet/intel/ice/ice_bst_tcam.h | 3 +
drivers/net/ethernet/intel/ice/ice_flg_rd.c | 23 ++++++
drivers/net/ethernet/intel/ice/ice_flg_rd.h | 1 +
drivers/net/ethernet/intel/ice/ice_parser.h | 1 +
drivers/net/ethernet/intel/ice/ice_pg_cam.c | 76 +++++++++++++++++++
drivers/net/ethernet/intel/ice/ice_pg_cam.h | 6 ++
drivers/net/ethernet/intel/ice/ice_ptype_mk.c | 22 ++++++
drivers/net/ethernet/intel/ice/ice_ptype_mk.h | 3 +
drivers/net/ethernet/intel/ice/ice_tmatch.h | 40 ++++++++++
drivers/net/ethernet/intel/ice/ice_xlt_kb.c | 27 +++++++
drivers/net/ethernet/intel/ice/ice_xlt_kb.h | 1 +
12 files changed, 226 insertions(+)
create mode 100644 drivers/net/ethernet/intel/ice/ice_tmatch.h
diff --git a/drivers/net/ethernet/intel/ice/ice_bst_tcam.c b/drivers/net/ethernet/intel/ice/ice_bst_tcam.c
index 9f232db164d9..f31023da0a41 100644
--- a/drivers/net/ethernet/intel/ice/ice_bst_tcam.c
+++ b/drivers/net/ethernet/intel/ice/ice_bst_tcam.c
@@ -271,3 +271,26 @@ struct ice_lbl_item *ice_bst_lbl_table_get(struct ice_hw *hw)
ice_parser_sect_item_get,
_ice_parse_lbl_item, true);
}
+
+/**
+ * ice_bst_tcam_match - match a pattern on the boost tcam table
+ * @tcam_table: boost tcam table to search
+ * @pat: pattern to match
+ */
+struct ice_bst_tcam_item *
+ice_bst_tcam_match(struct ice_bst_tcam_item *tcam_table, u8 *pat)
+{
+ int i;
+
+ for (i = 0; i < ICE_BST_TCAM_TABLE_SIZE; i++) {
+ struct ice_bst_tcam_item *item = &tcam_table[i];
+
+ if (item->hit_idx_grp == 0)
+ continue;
+ if (ice_ternary_match(item->key, item->key_inv, pat,
+ ICE_BST_TCAM_KEY_SIZE))
+ return item;
+ }
+
+ return NULL;
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_bst_tcam.h b/drivers/net/ethernet/intel/ice/ice_bst_tcam.h
index b1b1dc224d70..960c8ff09171 100644
--- a/drivers/net/ethernet/intel/ice/ice_bst_tcam.h
+++ b/drivers/net/ethernet/intel/ice/ice_bst_tcam.h
@@ -42,4 +42,7 @@ void ice_bst_tcam_dump(struct ice_hw *hw, struct ice_bst_tcam_item *item);
struct ice_bst_tcam_item *ice_bst_tcam_table_get(struct ice_hw *hw);
struct ice_lbl_item *ice_bst_lbl_table_get(struct ice_hw *hw);
+
+struct ice_bst_tcam_item *
+ice_bst_tcam_match(struct ice_bst_tcam_item *tcam_table, u8 *pat);
#endif /*_ICE_BST_TCAM_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_flg_rd.c b/drivers/net/ethernet/intel/ice/ice_flg_rd.c
index 9d5d66d0c773..057bcd68125f 100644
--- a/drivers/net/ethernet/intel/ice/ice_flg_rd.c
+++ b/drivers/net/ethernet/intel/ice/ice_flg_rd.c
@@ -48,3 +48,26 @@ struct ice_flg_rd_item *ice_flg_rd_table_get(struct ice_hw *hw)
ice_parser_sect_item_get,
_ice_flg_rd_parse_item, false);
}
+
+/**
+ * ice_flg_redirect - redirect a parser flag to packet flag
+ * @table: flag redirect table
+ * @psr_flg: parser flag to redirect
+ */
+u64 ice_flg_redirect(struct ice_flg_rd_item *table, u64 psr_flg)
+{
+ u64 flg = 0;
+ int i;
+
+ for (i = 0; i < ICE_FLG_RDT_SIZE; i++) {
+ struct ice_flg_rd_item *item = &table[i];
+
+ if (!item->expose)
+ continue;
+
+ if (psr_flg & BIT(item->intr_flg_id))
+ flg |= BIT(i);
+ }
+
+ return flg;
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_flg_rd.h b/drivers/net/ethernet/intel/ice/ice_flg_rd.h
index b3b4fd7a9002..9215c8e0cdfd 100644
--- a/drivers/net/ethernet/intel/ice/ice_flg_rd.h
+++ b/drivers/net/ethernet/intel/ice/ice_flg_rd.h
@@ -20,4 +20,5 @@ struct ice_flg_rd_item {
void ice_flg_rd_dump(struct ice_hw *hw, struct ice_flg_rd_item *item);
struct ice_flg_rd_item *ice_flg_rd_table_get(struct ice_hw *hw);
+u64 ice_flg_redirect(struct ice_flg_rd_item *table, u64 psr_flg);
#endif /* _ICE_FLG_RD_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_parser.h b/drivers/net/ethernet/intel/ice/ice_parser.h
index 5f98f3031294..bfcef4f597bf 100644
--- a/drivers/net/ethernet/intel/ice/ice_parser.h
+++ b/drivers/net/ethernet/intel/ice/ice_parser.h
@@ -14,6 +14,7 @@
#include "ice_flg_rd.h"
#include "ice_xlt_kb.h"
#include "ice_parser_rt.h"
+#include "ice_tmatch.h"
#define ICE_SEC_DATA_OFFSET 4
#define ICE_SID_RXPARSER_IMEM_ENTRY_SIZE 48
diff --git a/drivers/net/ethernet/intel/ice/ice_pg_cam.c b/drivers/net/ethernet/intel/ice/ice_pg_cam.c
index 70b0b0b93a8d..bd17e85834ed 100644
--- a/drivers/net/ethernet/intel/ice/ice_pg_cam.c
+++ b/drivers/net/ethernet/intel/ice/ice_pg_cam.c
@@ -319,3 +319,79 @@ struct ice_pg_nm_cam_item *ice_pg_nm_sp_cam_table_get(struct ice_hw *hw)
ice_parser_sect_item_get,
_ice_pg_nm_sp_cam_parse_item, false);
}
+
+static bool _ice_pg_cam_match(struct ice_pg_cam_item *item,
+ struct ice_pg_cam_key *key)
+{
+ if (!item->key.valid ||
+ item->key.node_id != key->node_id ||
+ item->key.flag0 != key->flag0 ||
+ item->key.flag1 != key->flag1 ||
+ item->key.flag2 != key->flag2 ||
+ item->key.flag3 != key->flag3 ||
+ item->key.boost_idx != key->boost_idx ||
+ item->key.alu_reg != key->alu_reg ||
+ item->key.next_proto != key->next_proto)
+ return false;
+
+ return true;
+}
+
+static bool _ice_pg_nm_cam_match(struct ice_pg_nm_cam_item *item,
+ struct ice_pg_cam_key *key)
+{
+ if (!item->key.valid ||
+ item->key.node_id != key->node_id ||
+ item->key.flag0 != key->flag0 ||
+ item->key.flag1 != key->flag1 ||
+ item->key.flag2 != key->flag2 ||
+ item->key.flag3 != key->flag3 ||
+ item->key.boost_idx != key->boost_idx ||
+ item->key.alu_reg != key->alu_reg)
+ return false;
+
+ return true;
+}
+
+/**
+ * ice_pg_cam_match - search parse graph cam table by key
+ * @table: parse graph cam table to search
+ * @size: cam table size
+ * @key: search key
+ */
+struct ice_pg_cam_item *ice_pg_cam_match(struct ice_pg_cam_item *table,
+ int size, struct ice_pg_cam_key *key)
+{
+ int i;
+
+ for (i = 0; i < size; i++) {
+ struct ice_pg_cam_item *item = &table[i];
+
+ if (_ice_pg_cam_match(item, key))
+ return item;
+ }
+
+ return NULL;
+}
+
+/**
+ * ice_pg_nm_cam_match - search parse graph no match cam table by key
+ * @table: parse graph no match cam table to search
+ * @size: cam table size
+ * @key: search 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)
+{
+ int i;
+
+ for (i = 0; i < size; i++) {
+ struct ice_pg_nm_cam_item *item = &table[i];
+
+ if (_ice_pg_nm_cam_match(item, key))
+ return item;
+ }
+
+ return NULL;
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_pg_cam.h b/drivers/net/ethernet/intel/ice/ice_pg_cam.h
index 0d5c84d380d3..301165b19b6a 100644
--- a/drivers/net/ethernet/intel/ice/ice_pg_cam.h
+++ b/drivers/net/ethernet/intel/ice/ice_pg_cam.h
@@ -133,4 +133,10 @@ struct ice_pg_cam_item *ice_pg_sp_cam_table_get(struct ice_hw *hw);
struct ice_pg_nm_cam_item *ice_pg_nm_cam_table_get(struct ice_hw *hw);
struct ice_pg_nm_cam_item *ice_pg_nm_sp_cam_table_get(struct ice_hw *hw);
+
+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);
#endif /* _ICE_PG_CAM_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_ptype_mk.c b/drivers/net/ethernet/intel/ice/ice_ptype_mk.c
index ee7b09618d54..fbd46ae857a3 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptype_mk.c
+++ b/drivers/net/ethernet/intel/ice/ice_ptype_mk.c
@@ -49,3 +49,25 @@ struct ice_ptype_mk_tcam_item *ice_ptype_mk_tcam_table_get(struct ice_hw *hw)
ice_parser_sect_item_get,
_ice_parse_ptype_mk_tcam_item, true);
}
+
+/**
+ * ice_ptype_mk_tcam_match - match a pattern on a ptype marker tcam table
+ * @table: ptype marker tcam table to search
+ * @pat: pattern to match
+ * @len: length of the pattern
+ */
+struct ice_ptype_mk_tcam_item *
+ice_ptype_mk_tcam_match(struct ice_ptype_mk_tcam_item *table,
+ u8 *pat, int len)
+{
+ int i;
+
+ for (i = 0; i < ICE_PTYPE_MK_TCAM_TABLE_SIZE; i++) {
+ struct ice_ptype_mk_tcam_item *item = &table[i];
+
+ if (ice_ternary_match(item->key, item->key_inv, pat, len))
+ return item;
+ }
+
+ return NULL;
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_ptype_mk.h b/drivers/net/ethernet/intel/ice/ice_ptype_mk.h
index 4a071d823bea..c8061f55cccc 100644
--- a/drivers/net/ethernet/intel/ice/ice_ptype_mk.h
+++ b/drivers/net/ethernet/intel/ice/ice_ptype_mk.h
@@ -17,4 +17,7 @@ struct ice_ptype_mk_tcam_item {
void ice_ptype_mk_tcam_dump(struct ice_hw *hw,
struct ice_ptype_mk_tcam_item *item);
struct ice_ptype_mk_tcam_item *ice_ptype_mk_tcam_table_get(struct ice_hw *hw);
+struct ice_ptype_mk_tcam_item *
+ice_ptype_mk_tcam_match(struct ice_ptype_mk_tcam_item *table,
+ u8 *pat, int len);
#endif /* _ICE_PTYPE_MK_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_tmatch.h b/drivers/net/ethernet/intel/ice/ice_tmatch.h
new file mode 100644
index 000000000000..e7adcf22ae3f
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_tmatch.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2023 Intel Corporation */
+
+#ifndef _ICE_TMATCH_H_
+#define _ICE_TMATCH_H_
+
+static inline bool ice_ternary_match_byte(u8 key, u8 key_inv, u8 pat)
+{
+ u8 k1, k2, vv;
+ int i;
+
+ for (i = 0; i < BITS_PER_BYTE; i++) {
+ k1 = (u8)(key & BIT(i));
+ k2 = (u8)(key_inv & BIT(i));
+ vv = (u8)(pat & BIT(i));
+
+ if (k1 != 0 && k2 != 0)
+ continue;
+ if (k1 == 0 && k2 == 0)
+ return false;
+
+ if (k1 == vv)
+ return false;
+ }
+
+ return true;
+}
+
+static inline bool ice_ternary_match(const u8 *key, const u8 *key_inv,
+ const u8 *pat, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ if (!ice_ternary_match_byte(key[i], key_inv[i], pat[i]))
+ return false;
+
+ return true;
+}
+#endif /* _ICE_TMATCH_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_xlt_kb.c b/drivers/net/ethernet/intel/ice/ice_xlt_kb.c
index 4fca88fb7d77..1cb00fabbaf4 100644
--- a/drivers/net/ethernet/intel/ice/ice_xlt_kb.c
+++ b/drivers/net/ethernet/intel/ice/ice_xlt_kb.c
@@ -233,3 +233,30 @@ struct ice_xlt_kb *ice_xlt_kb_get_rss(struct ice_hw *hw)
{
return _ice_xlt_kb_get(hw, ICE_SID_XLT_KEY_BUILDER_RSS);
}
+
+/**
+ * ice_xlt_kb_flag_get - aggregate 64 bits packet flag into 16 bits xlt flag
+ * @kb: xlt key build
+ * @pkt_flag: 64 bits packet flag
+ */
+u16 ice_xlt_kb_flag_get(struct ice_xlt_kb *kb, u64 pkt_flag)
+{
+ struct ice_xlt_kb_entry *entry = &kb->entries[0];
+ u16 flg = 0;
+ int i;
+
+ /* check flag 15 */
+ if (kb->flag15 & pkt_flag)
+ flg = (u16)BIT(ICE_XLT_KB_FLAG0_14_CNT);
+
+ /* check flag 0 - 14 */
+ for (i = 0; i < ICE_XLT_KB_FLAG0_14_CNT; i++) {
+ /* only check first entry */
+ u16 idx = (u16)(entry->flg0_14_sel[i] & ICE_XLT_KB_FLAG_M);
+
+ if (pkt_flag & BIT(idx))
+ flg |= (u16)BIT(i);
+ }
+
+ return flg;
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_xlt_kb.h b/drivers/net/ethernet/intel/ice/ice_xlt_kb.h
index 020f96bfdbe8..dbd80fe8b0b9 100644
--- a/drivers/net/ethernet/intel/ice/ice_xlt_kb.h
+++ b/drivers/net/ethernet/intel/ice/ice_xlt_kb.h
@@ -76,4 +76,5 @@ struct ice_xlt_kb *ice_xlt_kb_get_sw(struct ice_hw *hw);
struct ice_xlt_kb *ice_xlt_kb_get_acl(struct ice_hw *hw);
struct ice_xlt_kb *ice_xlt_kb_get_fd(struct ice_hw *hw);
struct ice_xlt_kb *ice_xlt_kb_get_rss(struct ice_hw *hw);
+u16 ice_xlt_kb_flag_get(struct ice_xlt_kb *kb, u64 pkt_flag);
#endif /* _ICE_XLT_KB_H */
--
2.25.1
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