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Wed, 10 Jul 2024 20:40:48 +0000 (UTC) X-CSE-ConnectionGUID: EzBZDbsmR8+6u7iTVtlUew== X-CSE-MsgGUID: A0KPsT+QTkOsOZRSNewhbw== X-IronPort-AV: E=McAfee;i="6700,10204,11129"; a="29153254" X-IronPort-AV: E=Sophos;i="6.09,198,1716274800"; d="scan'208";a="29153254" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jul 2024 13:40:48 -0700 X-CSE-ConnectionGUID: +1PRzgGiS1+iP4evm+OF8Q== X-CSE-MsgGUID: chLvjC0nTLOzwbu/TXhjdg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,198,1716274800"; d="scan'208";a="48301139" Received: from klitkey1-mobl1.ger.corp.intel.com (HELO azaki-desk1.intel.com) ([10.245.246.184]) by fmviesa008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Jul 2024 13:40:43 -0700 From: Ahmed Zaki To: intel-wired-lan@lists.osuosl.org Date: Wed, 10 Jul 2024 14:40:06 -0600 Message-ID: <20240710204015.124233-5-ahmed.zaki@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240710204015.124233-1-ahmed.zaki@intel.com> References: <20240710204015.124233-1-ahmed.zaki@intel.com> MIME-Version: 1.0 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1720644049; x=1752180049; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Cqe4O5ikewD69XxUIerEqM8kSs+5NKufVcGxM2WB/Bw=; b=MvLX3LHXs0/BdsGXwxSzo8fLN5Hbq4oSiGGJCcQnATiEhbTnltlmLW3e SkoVZxDP6uILT+2QxCDxFrsCakrMzCLQXLfDUbbGW4w4yX2y4tzyd+KjS rStT7ncXDE2n9A5Q1Q40rbgnKEjCucPV+WTTo8ADmTDOIwX5Zs7jJQCdS sCg190O5SVQ0P+gt95rPRUlDPU93zQukQgWkfemUFECXuzu75SABtw4rI j7roIGjfe0n+xv5V9+lwrA6w3+J3z6gemFwIjNr6ztZiiH9d2hnVeF3fV +Loadgad4ZRVyooilOJ7iChHiakEZF9ViXCLawcMLnLyL3UOA3yn7y3Mm Q==; X-Mailman-Original-Authentication-Results: smtp4.osuosl.org; dmarc=pass (p=none dis=none) header.from=intel.com X-Mailman-Original-Authentication-Results: smtp4.osuosl.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=MvLX3LHX Subject: [Intel-wired-lan] [PATCH iwl-next v3 04/13] ice: add parser internal helper functions X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Wojciech Drewek , netdev@vger.kernel.org, Ahmed Zaki , Aleksandr Loktionov , Marcin Szycik , anthony.l.nguyen@intel.com, horms@kernel.org, Junfeng Guo Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" From: Junfeng Guo 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: Aleksandr Loktionov Reviewed-by: Wojciech Drewek Reviewed-by: Marcin Szycik Signed-off-by: Qi Zhang Signed-off-by: Junfeng Guo Signed-off-by: Ahmed Zaki Reviewed-by: Simon Horman --- 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 d6df02afcbb9..e7f6deb8c2da 100644 --- a/drivers/net/ethernet/intel/ice/ice_parser.c +++ b/drivers/net/ethernet/intel/ice/ice_parser.c @@ -964,6 +964,109 @@ 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) { @@ -1268,6 +1371,31 @@ 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 @@ -1322,6 +1450,30 @@ 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 @@ -1517,6 +1669,31 @@ 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 ***/ @@ -1750,6 +1927,37 @@ 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 26468b16202c..8211927ef7c4 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 */