Merge branch 'prestera-port-range-filters'

Maksym Glubokiy says:

====================
net: prestera: add support for port range filters

This adds support for port-range rules:

  $ tc qdisc add ... clsact
  $ tc filter add ... flower ... src_port <PMIN>-<PMAX> ...
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Co-developed-by: Volodymyr Mytnyk <volodymyr.mytnyk@plvision.eu>
Signed-off-by: Volodymyr Mytnyk <volodymyr.mytnyk@plvision.eu>
Signed-off-by: Maksym Glubokiy <maksym.glubokiy@plvision.eu>

drivers/net/ethernet/marvell/prestera/prestera_flower.c

@@ -202,6 +202,7 @@ static int prestera_flower_parse(struct prestera_flow_block *block,
 	      BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
 	      BIT(FLOW_DISSECTOR_KEY_ICMP) |
 	      BIT(FLOW_DISSECTOR_KEY_PORTS) |
+	      BIT(FLOW_DISSECTOR_KEY_PORTS_RANGE) |
 	      BIT(FLOW_DISSECTOR_KEY_VLAN))) {
 		NL_SET_ERR_MSG_MOD(f->common.extack, "Unsupported key");
 		return -EOPNOTSUPP;
@@ -301,6 +302,29 @@ static int prestera_flower_parse(struct prestera_flow_block *block,
 		rule_match_set(r_match->mask, L4_PORT_DST, match.mask->dst);
 	}
 
+	if (flow_rule_match_key(f_rule, FLOW_DISSECTOR_KEY_PORTS_RANGE)) {
+		struct flow_match_ports_range match;
+		__be32 tp_key, tp_mask;
+
+		flow_rule_match_ports_range(f_rule, &match);
+
+		/* src port range (min, max) */
+		tp_key = htonl(ntohs(match.key->tp_min.src) |
+			       (ntohs(match.key->tp_max.src) << 16));
+		tp_mask = htonl(ntohs(match.mask->tp_min.src) |
+				(ntohs(match.mask->tp_max.src) << 16));
+		rule_match_set(r_match->key, L4_PORT_RANGE_SRC, tp_key);
+		rule_match_set(r_match->mask, L4_PORT_RANGE_SRC, tp_mask);
+
+		/* dst port range (min, max) */
+		tp_key = htonl(ntohs(match.key->tp_min.dst) |
+			       (ntohs(match.key->tp_max.dst) << 16));
+		tp_mask = htonl(ntohs(match.mask->tp_min.dst) |
+				(ntohs(match.mask->tp_max.dst) << 16));
+		rule_match_set(r_match->key, L4_PORT_RANGE_DST, tp_key);
+		rule_match_set(r_match->mask, L4_PORT_RANGE_DST, tp_mask);
+	}
+
 	if (flow_rule_match_key(f_rule, FLOW_DISSECTOR_KEY_VLAN)) {
 		struct flow_match_vlan match;
 

include/net/flow_dissector.h

@@ -178,6 +178,22 @@ struct flow_dissector_key_ports {
 	};
 };
 
+/**
+ * struct flow_dissector_key_ports_range
+ * @tp: port number from packet
+ * @tp_min: min port number in range
+ * @tp_max: max port number in range
+ */
+struct flow_dissector_key_ports_range {
+	union {
+		struct flow_dissector_key_ports tp;
+		struct {
+			struct flow_dissector_key_ports tp_min;
+			struct flow_dissector_key_ports tp_max;
+		};
+	};
+};
+
 /**
  * flow_dissector_key_icmp:
  *		type: ICMP type

include/net/flow_offload.h

@@ -48,6 +48,10 @@ struct flow_match_ports {
 	struct flow_dissector_key_ports *key, *mask;
 };
 
+struct flow_match_ports_range {
+	struct flow_dissector_key_ports_range *key, *mask;
+};
+
 struct flow_match_icmp {
 	struct flow_dissector_key_icmp *key, *mask;
 };
@@ -94,6 +98,8 @@ void flow_rule_match_ip(const struct flow_rule *rule,
 			struct flow_match_ip *out);
 void flow_rule_match_ports(const struct flow_rule *rule,
 			   struct flow_match_ports *out);
+void flow_rule_match_ports_range(const struct flow_rule *rule,
+				 struct flow_match_ports_range *out);
 void flow_rule_match_tcp(const struct flow_rule *rule,
 			 struct flow_match_tcp *out);
 void flow_rule_match_icmp(const struct flow_rule *rule,

net/core/flow_offload.c

@@ -125,6 +125,13 @@ void flow_rule_match_ports(const struct flow_rule *rule,
 }
 EXPORT_SYMBOL(flow_rule_match_ports);
 
+void flow_rule_match_ports_range(const struct flow_rule *rule,
+				 struct flow_match_ports_range *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_PORTS_RANGE, out);
+}
+EXPORT_SYMBOL(flow_rule_match_ports_range);
+
 void flow_rule_match_tcp(const struct flow_rule *rule,
 			 struct flow_match_tcp *out)
 {

net/sched/cls_flower.c

@@ -63,13 +63,7 @@ struct fl_flow_key {
 	struct flow_dissector_key_ip ip;
 	struct flow_dissector_key_ip enc_ip;
 	struct flow_dissector_key_enc_opts enc_opts;
-	union {
-		struct flow_dissector_key_ports tp;
-		struct {
-			struct flow_dissector_key_ports tp_min;
-			struct flow_dissector_key_ports tp_max;
-		};
-	} tp_range;
+	struct flow_dissector_key_ports_range tp_range;
 	struct flow_dissector_key_ct ct;
 	struct flow_dissector_key_hash hash;
 	struct flow_dissector_key_num_of_vlans num_of_vlans;