From: Junfeng Guo <junfeng....@intel.com>
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 <ho...@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktio...@intel.com>
Reviewed-by: Wojciech Drewek <wojciech.dre...@intel.com>
Reviewed-by: Marcin Szycik <marcin.szy...@linux.intel.com>
Signed-off-by: Qi Zhang <qi.z.zh...@intel.com>
Signed-off-by: Junfeng Guo <junfeng....@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.z...@intel.com>
Tested-by: Rafal Romanowski <rafal.romanow...@intel.com>
---
drivers/net/ethernet/intel/ice/ice_parser.c | 208 ++++++++++++++++++++
drivers/net/ethernet/intel/ice/ice_parser.h | 52 +++--
2 files changed, 245 insertions(+), 15 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_parser.c
b/drivers/net/ethernet/intel/ice/ice_parser.c
index ef44654bb9e7..fe056bb90aed 100644
--- a/drivers/net/ethernet/intel/ice/ice_parser.c
+++ b/drivers/net/ethernet/intel/ice/ice_parser.c
@@ -958,6 +958,109 @@ static struct ice_pg_nm_cam_item
*ice_pg_nm_sp_cam_table_get(struct ice_hw *hw)
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)
+{
+ return (item->key.valid &&
+ !memcmp(&item->key.val, &key->val, sizeof(key->val)));
+}
+
+static bool __ice_pg_nm_cam_match(struct ice_pg_nm_cam_item *item,
+ struct ice_pg_cam_key *key)
+{
+ return (item->key.valid &&
+ !memcmp(&item->key.val, &key->val, sizeof(item->key.val)));
+}
+
+/**
+ * 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
+ *
+ * Return: a pointer to the matching PG CAM item or NULL.
+ */
+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
+ *
+ * Return: a pointer to the matching PG No Match CAM item or NULL.
+ */
+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;
+}
+
+/*** Ternary match ***/
+/* Perform a ternary match on a 1-byte pattern (@pat) given @key and @key_inv
+ * Rules (per bit):
+ * Key == 0 and Key_inv == 0 : Never match (Don't care)
+ * Key == 0 and Key_inv == 1 : Match on bit == 1
+ * Key == 1 and Key_inv == 0 : Match on bit == 0
+ * Key == 1 and Key_inv == 1 : Always match (Don't care)
+ *
+ * Return: true if all bits match, false otherwise.
+ */
+static bool ice_ternary_match_byte(u8 key, u8 key_inv, u8 pat)
+{
+ u8 bit_key, bit_key_inv, bit_pat;
+ int i;
+
+ for (i = 0; i < BITS_PER_BYTE; i++) {
+ bit_key = key & BIT(i);
+ bit_key_inv = key_inv & BIT(i);
+ bit_pat = pat & BIT(i);
+
+ if (bit_key != 0 && bit_key_inv != 0)
+ continue;
+
+ if ((bit_key == 0 && bit_key_inv == 0) || bit_key == bit_pat)
+ return false;
+ }
+
+ return true;
+}
+
+static 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;
+}
+
/*** ICE_SID_RXPARSER_BOOST_TCAM and ICE_SID_LBL_RXPARSER_TMEM sections ***/
static void ice_bst_np_kb_dump(struct ice_hw *hw, struct ice_np_keybuilder *kb)
{
@@ -1260,6 +1363,31 @@ static struct ice_lbl_item *ice_bst_lbl_table_get(struct
ice_hw *hw)
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
+ *
+ * Return: a pointer to the matching Boost TCAM item or NULL.
+ */
+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;
+}
+
/*** ICE_SID_RXPARSER_MARKER_PTYPE section ***/
/**
* ice_ptype_mk_tcam_dump - dump an ptype marker tcam info
@@ -1313,6 +1441,30 @@ struct ice_ptype_mk_tcam_item
*ice_ptype_mk_tcam_table_get(struct ice_hw *hw)
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
+ *
+ * Return: a pointer to the matching Marker PType item or NULL.
+ */
+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;
+}
+
/*** ICE_SID_RXPARSER_MARKER_GRP section ***/
/**
* ice_mk_grp_dump - dump an marker group item info
@@ -1505,6 +1657,31 @@ static struct ice_flg_rd_item
*ice_flg_rd_table_get(struct ice_hw *hw)
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
+ *
+ * Return: flag or 0 if @psr_flag = 0.
+ */
+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;
+}
+
/*** 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 ***/
@@ -1738,6 +1915,37 @@ static 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);
}
+#define ICE_XLT_KB_MASK GENMASK_ULL(5, 0)
+
+/**
+ * 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
+ *
+ * Return: XLT flag or 0 if @pkt_flag = 0.
+ */
+u16 ice_xlt_kb_flag_get(struct ice_xlt_kb *kb, u64 pkt_flag)
+{
+ struct ice_xlt_kb_entry *entry = &kb->entries[0];
+ u16 flag = 0;
+ int i;
+
+ /* check flag 15 */
+ if (kb->flag15 & pkt_flag)
+ flag = 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 = entry->flg0_14_sel[i] & ICE_XLT_KB_MASK;
+
+ if (pkt_flag & BIT(idx))
+ flag |= (u16)BIT(i);
+ }
+
+ return flag;
+}
+
/*** Parser API ***/
/**
* ice_parser_create - create a parser instance
diff --git a/drivers/net/ethernet/intel/ice/ice_parser.h
b/drivers/net/ethernet/intel/ice/ice_parser.h
index a81ed0be4349..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 +360,9 @@ 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 */
--
2.43.0
