Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
ice: allow matching on meta data

Michal Swiatkowski says:

This patchset is intended to improve the usability of the switchdev
slow path. Without matching on a meta data values slow path works
based on VF's MAC addresses. It causes a problem when the VF wants
to use more than one MAC address (e.g. when it is in trusted mode).

Parse all meta data in the same place where protocol type fields are
parsed. Add description for the currently implemented meta data. It is
important to note that depending on DDP not all described meta data can
be available. Using not available meta data leads to error returned by
function which is looking for correct words in profiles read from DDP.

There is also one small improvement, remove of rx field in rule info
structure (patch 2). It is redundant.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 101 insertions, 131 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 46b36851af46..2ea9e1ae5517 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -4540,6 +4540,11 @@ ice_free_res_cntr(struct ice_hw *hw, u8 type, u8 alloc_shared, u16 num_items,
 	return status;
 }
 
+#define ICE_PROTOCOL_ENTRY(id, ...) {		\
+	.prot_type	= id,			\
+	.offs		= {__VA_ARGS__},	\
+}
+
 /* This is mapping table entry that maps every word within a given protocol
  * structure to the real byte offset as per the specification of that
  * protocol header.
@@ -4550,29 +4555,38 @@ ice_free_res_cntr(struct ice_hw *hw, u8 type, u8 alloc_shared, u16 num_items,
  * structure is added to that union.
  */
 static const struct ice_prot_ext_tbl_entry ice_prot_ext[ICE_PROTOCOL_LAST] = {
-	{ ICE_MAC_OFOS,		{ 0, 2, 4, 6, 8, 10, 12 } },
-	{ ICE_MAC_IL,		{ 0, 2, 4, 6, 8, 10, 12 } },
-	{ ICE_ETYPE_OL,		{ 0 } },
-	{ ICE_ETYPE_IL,		{ 0 } },
-	{ ICE_VLAN_OFOS,	{ 2, 0 } },
-	{ ICE_IPV4_OFOS,	{ 0, 2, 4, 6, 8, 10, 12, 14, 16, 18 } },
-	{ ICE_IPV4_IL,		{ 0, 2, 4, 6, 8, 10, 12, 14, 16, 18 } },
-	{ ICE_IPV6_OFOS,	{ 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24,
-				 26, 28, 30, 32, 34, 36, 38 } },
-	{ ICE_IPV6_IL,		{ 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24,
-				 26, 28, 30, 32, 34, 36, 38 } },
-	{ ICE_TCP_IL,		{ 0, 2 } },
-	{ ICE_UDP_OF,		{ 0, 2 } },
-	{ ICE_UDP_ILOS,		{ 0, 2 } },
-	{ ICE_VXLAN,		{ 8, 10, 12, 14 } },
-	{ ICE_GENEVE,		{ 8, 10, 12, 14 } },
-	{ ICE_NVGRE,		{ 0, 2, 4, 6 } },
-	{ ICE_GTP,		{ 8, 10, 12, 14, 16, 18, 20, 22 } },
-	{ ICE_GTP_NO_PAY,	{ 8, 10, 12, 14 } },
-	{ ICE_PPPOE,		{ 0, 2, 4, 6 } },
-	{ ICE_L2TPV3,		{ 0, 2, 4, 6, 8, 10 } },
-	{ ICE_VLAN_EX,          { 2, 0 } },
-	{ ICE_VLAN_IN,          { 2, 0 } },
+	ICE_PROTOCOL_ENTRY(ICE_MAC_OFOS, 0, 2, 4, 6, 8, 10, 12),
+	ICE_PROTOCOL_ENTRY(ICE_MAC_IL, 0, 2, 4, 6, 8, 10, 12),
+	ICE_PROTOCOL_ENTRY(ICE_ETYPE_OL, 0),
+	ICE_PROTOCOL_ENTRY(ICE_ETYPE_IL, 0),
+	ICE_PROTOCOL_ENTRY(ICE_VLAN_OFOS, 2, 0),
+	ICE_PROTOCOL_ENTRY(ICE_IPV4_OFOS, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18),
+	ICE_PROTOCOL_ENTRY(ICE_IPV4_IL,	0, 2, 4, 6, 8, 10, 12, 14, 16, 18),
+	ICE_PROTOCOL_ENTRY(ICE_IPV6_OFOS, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18,
+			   20, 22, 24, 26, 28, 30, 32, 34, 36, 38),
+	ICE_PROTOCOL_ENTRY(ICE_IPV6_IL, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20,
+			   22, 24, 26, 28, 30, 32, 34, 36, 38),
+	ICE_PROTOCOL_ENTRY(ICE_TCP_IL, 0, 2),
+	ICE_PROTOCOL_ENTRY(ICE_UDP_OF, 0, 2),
+	ICE_PROTOCOL_ENTRY(ICE_UDP_ILOS, 0, 2),
+	ICE_PROTOCOL_ENTRY(ICE_VXLAN, 8, 10, 12, 14),
+	ICE_PROTOCOL_ENTRY(ICE_GENEVE, 8, 10, 12, 14),
+	ICE_PROTOCOL_ENTRY(ICE_NVGRE, 0, 2, 4, 6),
+	ICE_PROTOCOL_ENTRY(ICE_GTP, 8, 10, 12, 14, 16, 18, 20, 22),
+	ICE_PROTOCOL_ENTRY(ICE_GTP_NO_PAY, 8, 10, 12, 14),
+	ICE_PROTOCOL_ENTRY(ICE_PPPOE, 0, 2, 4, 6),
+	ICE_PROTOCOL_ENTRY(ICE_L2TPV3, 0, 2, 4, 6, 8, 10),
+	ICE_PROTOCOL_ENTRY(ICE_VLAN_EX, 2, 0),
+	ICE_PROTOCOL_ENTRY(ICE_VLAN_IN, 2, 0),
+	ICE_PROTOCOL_ENTRY(ICE_HW_METADATA,
+			   ICE_SOURCE_PORT_MDID_OFFSET,
+			   ICE_PTYPE_MDID_OFFSET,
+			   ICE_PACKET_LENGTH_MDID_OFFSET,
+			   ICE_SOURCE_VSI_MDID_OFFSET,
+			   ICE_PKT_VLAN_MDID_OFFSET,
+			   ICE_PKT_TUNNEL_MDID_OFFSET,
+			   ICE_PKT_TCP_MDID_OFFSET,
+			   ICE_PKT_ERROR_MDID_OFFSET),
 };
 
 static struct ice_protocol_entry ice_prot_id_tbl[ICE_PROTOCOL_LAST] = {
@@ -4597,6 +4611,7 @@ static struct ice_protocol_entry ice_prot_id_tbl[ICE_PROTOCOL_LAST] = {
 	{ ICE_L2TPV3,		ICE_L2TPV3_HW },
 	{ ICE_VLAN_EX,          ICE_VLAN_OF_HW },
 	{ ICE_VLAN_IN,          ICE_VLAN_OL_HW },
+	{ ICE_HW_METADATA,      ICE_META_DATA_ID_HW },
 };
 
 /**
@@ -5255,71 +5270,6 @@ ice_create_recipe_group(struct ice_hw *hw, struct ice_sw_recipe *rm,
 	return status;
 }
 
-/**
- * ice_tun_type_match_word - determine if tun type needs a match mask
- * @tun_type: tunnel type
- * @mask: mask to be used for the tunnel
- */
-static bool ice_tun_type_match_word(enum ice_sw_tunnel_type tun_type, u16 *mask)
-{
-	switch (tun_type) {
-	case ICE_SW_TUN_GENEVE:
-	case ICE_SW_TUN_VXLAN:
-	case ICE_SW_TUN_NVGRE:
-	case ICE_SW_TUN_GTPU:
-	case ICE_SW_TUN_GTPC:
-		*mask = ICE_TUN_FLAG_MASK;
-		return true;
-
-	default:
-		*mask = 0;
-		return false;
-	}
-}
-
-/**
- * ice_add_special_words - Add words that are not protocols, such as metadata
- * @rinfo: other information regarding the rule e.g. priority and action info
- * @lkup_exts: lookup word structure
- * @dvm_ena: is double VLAN mode enabled
- */
-static int
-ice_add_special_words(struct ice_adv_rule_info *rinfo,
-		      struct ice_prot_lkup_ext *lkup_exts, bool dvm_ena)
-{
-	u16 mask;
-
-	/* If this is a tunneled packet, then add recipe index to match the
-	 * tunnel bit in the packet metadata flags.
-	 */
-	if (ice_tun_type_match_word(rinfo->tun_type, &mask)) {
-		if (lkup_exts->n_val_words < ICE_MAX_CHAIN_WORDS) {
-			u8 word = lkup_exts->n_val_words++;
-
-			lkup_exts->fv_words[word].prot_id = ICE_META_DATA_ID_HW;
-			lkup_exts->fv_words[word].off = ICE_TUN_FLAG_MDID_OFF;
-			lkup_exts->field_mask[word] = mask;
-		} else {
-			return -ENOSPC;
-		}
-	}
-
-	if (rinfo->vlan_type != 0 && dvm_ena) {
-		if (lkup_exts->n_val_words < ICE_MAX_CHAIN_WORDS) {
-			u8 word = lkup_exts->n_val_words++;
-
-			lkup_exts->fv_words[word].prot_id = ICE_META_DATA_ID_HW;
-			lkup_exts->fv_words[word].off = ICE_VLAN_FLAG_MDID_OFF;
-			lkup_exts->field_mask[word] =
-					ICE_PKT_FLAGS_0_TO_15_VLAN_FLAGS_MASK;
-		} else {
-			return -ENOSPC;
-		}
-	}
-
-	return 0;
-}
-
 /* ice_get_compat_fv_bitmap - Get compatible field vector bitmap for rule
  * @hw: pointer to hardware structure
  * @rinfo: other information regarding the rule e.g. priority and action info
@@ -5433,13 +5383,6 @@ ice_add_adv_recipe(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 	if (status)
 		goto err_unroll;
 
-	/* Create any special protocol/offset pairs, such as looking at tunnel
-	 * bits by extracting metadata
-	 */
-	status = ice_add_special_words(rinfo, lkup_exts, ice_is_dvm_ena(hw));
-	if (status)
-		goto err_unroll;
-
 	/* Group match words into recipes using preferred recipe grouping
 	 * criteria.
 	 */
@@ -5725,6 +5668,10 @@ ice_fill_adv_dummy_packet(struct ice_adv_lkup_elem *lkups, u16 lkups_cnt,
 		 * was already checked when search for the dummy packet
 		 */
 		type = lkups[i].type;
+		/* metadata isn't present in the packet */
+		if (type == ICE_HW_METADATA)
+			continue;
+
 		for (j = 0; offsets[j].type != ICE_PROTOCOL_LAST; j++) {
 			if (type == offsets[j].type) {
 				offset = offsets[j].offset;
@@ -5860,16 +5807,21 @@ ice_fill_adv_packet_tun(struct ice_hw *hw, enum ice_sw_tunnel_type tun_type,
 
 /**
  * ice_fill_adv_packet_vlan - fill dummy packet with VLAN tag type
+ * @hw: pointer to hw structure
  * @vlan_type: VLAN tag type
  * @pkt: dummy packet to fill in
  * @offsets: offset info for the dummy packet
  */
 static int
-ice_fill_adv_packet_vlan(u16 vlan_type, u8 *pkt,
+ice_fill_adv_packet_vlan(struct ice_hw *hw, u16 vlan_type, u8 *pkt,
 			 const struct ice_dummy_pkt_offsets *offsets)
 {
 	u16 i;
 
+	/* Check if there is something to do */
+	if (!vlan_type || !ice_is_dvm_ena(hw))
+		return 0;
+
 	/* Find VLAN header and insert VLAN TPID */
 	for (i = 0; offsets[i].type != ICE_PROTOCOL_LAST; i++) {
 		if (offsets[i].type == ICE_VLAN_OFOS ||
@@ -5888,6 +5840,15 @@ ice_fill_adv_packet_vlan(u16 vlan_type, u8 *pkt,
 	return -EIO;
 }
 
+static bool ice_rules_equal(const struct ice_adv_rule_info *first,
+			    const struct ice_adv_rule_info *second)
+{
+	return first->sw_act.flag == second->sw_act.flag &&
+	       first->tun_type == second->tun_type &&
+	       first->vlan_type == second->vlan_type &&
+	       first->src_vsi == second->src_vsi;
+}
+
 /**
  * ice_find_adv_rule_entry - Search a rule entry
  * @hw: pointer to the hardware structure
@@ -5921,9 +5882,7 @@ ice_find_adv_rule_entry(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 				lkups_matched = false;
 				break;
 			}
-		if (rinfo->sw_act.flag == list_itr->rule_info.sw_act.flag &&
-		    rinfo->tun_type == list_itr->rule_info.tun_type &&
-		    rinfo->vlan_type == list_itr->rule_info.vlan_type &&
+		if (ice_rules_equal(rinfo, &list_itr->rule_info) &&
 		    lkups_matched)
 			return list_itr;
 	}
@@ -6039,6 +5998,26 @@ ice_adv_add_update_vsi_list(struct ice_hw *hw,
 	return status;
 }
 
+void ice_rule_add_tunnel_metadata(struct ice_adv_lkup_elem *lkup)
+{
+	lkup->type = ICE_HW_METADATA;
+	lkup->m_u.metadata.flags[ICE_PKT_FLAGS_TUNNEL] =
+		cpu_to_be16(ICE_PKT_TUNNEL_MASK);
+}
+
+void ice_rule_add_vlan_metadata(struct ice_adv_lkup_elem *lkup)
+{
+	lkup->type = ICE_HW_METADATA;
+	lkup->m_u.metadata.flags[ICE_PKT_FLAGS_VLAN] =
+		cpu_to_be16(ICE_PKT_VLAN_MASK);
+}
+
+void ice_rule_add_src_vsi_metadata(struct ice_adv_lkup_elem *lkup)
+{
+	lkup->type = ICE_HW_METADATA;
+	lkup->m_u.metadata.source_vsi = cpu_to_be16(ICE_MDID_SOURCE_VSI_MASK);
+}
+
 /**
  * ice_add_adv_rule - helper function to create an advanced switch rule
  * @hw: pointer to the hardware structure
@@ -6120,7 +6099,10 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 	if (rinfo->sw_act.fltr_act == ICE_FWD_TO_VSI)
 		rinfo->sw_act.fwd_id.hw_vsi_id =
 			ice_get_hw_vsi_num(hw, vsi_handle);
-	if (rinfo->sw_act.flag & ICE_FLTR_TX)
+
+	if (rinfo->src_vsi)
+		rinfo->sw_act.src = ice_get_hw_vsi_num(hw, rinfo->src_vsi);
+	else
 		rinfo->sw_act.src = ice_get_hw_vsi_num(hw, vsi_handle);
 
 	status = ice_add_adv_recipe(hw, lkups, lkups_cnt, rinfo, &rid);
@@ -6189,19 +6171,20 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 		goto err_ice_add_adv_rule;
 	}
 
-	/* set the rule LOOKUP type based on caller specified 'Rx'
-	 * instead of hardcoding it to be either LOOKUP_TX/RX
+	/* If there is no matching criteria for direction there
+	 * is only one difference between Rx and Tx:
+	 * - get switch id base on VSI number from source field (Tx)
+	 * - get switch id base on port number (Rx)
 	 *
-	 * for 'Rx' set the source to be the port number
-	 * for 'Tx' set the source to be the source HW VSI number (determined
-	 * by caller)
+	 * If matching on direction metadata is chose rule direction is
+	 * extracted from type value set here.
 	 */
-	if (rinfo->rx) {
-		s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_LKUP_RX);
-		s_rule->src = cpu_to_le16(hw->port_info->lport);
-	} else {
+	if (rinfo->sw_act.flag & ICE_FLTR_TX) {
 		s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_LKUP_TX);
 		s_rule->src = cpu_to_le16(rinfo->sw_act.src);
+	} else {
+		s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_LKUP_RX);
+		s_rule->src = cpu_to_le16(hw->port_info->lport);
 	}
 
 	s_rule->recipe_id = cpu_to_le16(rid);
@@ -6211,22 +6194,16 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 	if (status)
 		goto err_ice_add_adv_rule;
 
-	if (rinfo->tun_type != ICE_NON_TUN &&
-	    rinfo->tun_type != ICE_SW_TUN_AND_NON_TUN) {
-		status = ice_fill_adv_packet_tun(hw, rinfo->tun_type,
-						 s_rule->hdr_data,
-						 profile->offsets);
-		if (status)
-			goto err_ice_add_adv_rule;
-	}
+	status = ice_fill_adv_packet_tun(hw, rinfo->tun_type, s_rule->hdr_data,
+					 profile->offsets);
+	if (status)
+		goto err_ice_add_adv_rule;
 
-	if (rinfo->vlan_type != 0 && ice_is_dvm_ena(hw)) {
-		status = ice_fill_adv_packet_vlan(rinfo->vlan_type,
-						  s_rule->hdr_data,
-						  profile->offsets);
-		if (status)
-			goto err_ice_add_adv_rule;
-	}
+	status = ice_fill_adv_packet_vlan(hw, rinfo->vlan_type,
+					  s_rule->hdr_data,
+					  profile->offsets);
+	if (status)
+		goto err_ice_add_adv_rule;
 
 	status = ice_aq_sw_rules(hw, (struct ice_aqc_sw_rules *)s_rule,
 				 rule_buf_sz, 1, ice_aqc_opc_add_sw_rules,
@@ -6469,13 +6446,6 @@ ice_rem_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 			return -EIO;
 	}
 
-	/* Create any special protocol/offset pairs, such as looking at tunnel
-	 * bits by extracting metadata
-	 */
-	status = ice_add_special_words(rinfo, &lkup_exts, ice_is_dvm_ena(hw));
-	if (status)
-		return status;
-
 	rid = ice_find_recp(hw, &lkup_exts, rinfo->tun_type);
 	/* If did not find a recipe that match the existing criteria */
 	if (rid == ICE_MAX_NUM_RECIPES)