Merge branch 'mlxsw-ttl-tos'

Jiri Pirko says:

====================
mlxsw: offloading matches on ip ttl and tos

Or says:

Support offloading matches on ip ttl and tos
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_keys.h

@@ -57,6 +57,9 @@ enum mlxsw_afk_element {
 	MLXSW_AFK_ELEMENT_VID,
 	MLXSW_AFK_ELEMENT_PCP,
 	MLXSW_AFK_ELEMENT_TCP_FLAGS,
+	MLXSW_AFK_ELEMENT_IP_TTL_,
+	MLXSW_AFK_ELEMENT_IP_ECN,
+	MLXSW_AFK_ELEMENT_IP_DSCP,
 	MLXSW_AFK_ELEMENT_MAX,
 };
 
@@ -104,6 +107,9 @@ static const struct mlxsw_afk_element_info mlxsw_afk_element_infos[] = {
 	MLXSW_AFK_ELEMENT_INFO_U32(VID, 0x10, 8, 12),
 	MLXSW_AFK_ELEMENT_INFO_U32(PCP, 0x10, 20, 3),
 	MLXSW_AFK_ELEMENT_INFO_U32(TCP_FLAGS, 0x10, 23, 9),
+	MLXSW_AFK_ELEMENT_INFO_U32(IP_TTL_, 0x14, 0, 8),
+	MLXSW_AFK_ELEMENT_INFO_U32(IP_ECN, 0x14, 9, 2),
+	MLXSW_AFK_ELEMENT_INFO_U32(IP_DSCP, 0x14, 11, 6),
 	MLXSW_AFK_ELEMENT_INFO_U32(SRC_IP4, 0x18, 0, 32),
 	MLXSW_AFK_ELEMENT_INFO_U32(DST_IP4, 0x1C, 0, 32),
 	MLXSW_AFK_ELEMENT_INFO_BUF(SRC_IP6_HI, 0x18, 8),

drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.h

@@ -70,6 +70,9 @@ static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv4_dip[] = {
 
 static struct mlxsw_afk_element_inst mlxsw_sp_afk_element_info_ipv4[] = {
 	MLXSW_AFK_ELEMENT_INST_U32(SRC_IP4, 0x00, 0, 32),
+	MLXSW_AFK_ELEMENT_INST_U32(IP_ECN, 0x04, 4, 2),
+	MLXSW_AFK_ELEMENT_INST_U32(IP_TTL_, 0x04, 24, 8),
+	MLXSW_AFK_ELEMENT_INST_U32(IP_DSCP, 0x08, 0, 6),
 	MLXSW_AFK_ELEMENT_INST_U32(TCP_FLAGS, 0x08, 8, 9), /* TCP_CONTROL+TCP_ECN */
 };
 

drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c

@@ -984,6 +984,9 @@ static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv4[] = {
 	MLXSW_AFK_ELEMENT_VID,
 	MLXSW_AFK_ELEMENT_PCP,
 	MLXSW_AFK_ELEMENT_TCP_FLAGS,
+	MLXSW_AFK_ELEMENT_IP_TTL_,
+	MLXSW_AFK_ELEMENT_IP_ECN,
+	MLXSW_AFK_ELEMENT_IP_DSCP,
 };
 
 static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv6[] = {

drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c

@@ -212,11 +212,46 @@ static int mlxsw_sp_flower_parse_tcp(struct mlxsw_sp *mlxsw_sp,
 	return 0;
 }
 
+static int mlxsw_sp_flower_parse_ip(struct mlxsw_sp *mlxsw_sp,
+				    struct mlxsw_sp_acl_rule_info *rulei,
+				    struct tc_cls_flower_offload *f,
+				    u16 n_proto)
+{
+	struct flow_dissector_key_ip *key, *mask;
+
+	if (!dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_IP))
+		return 0;
+
+	if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) {
+		dev_err(mlxsw_sp->bus_info->dev, "IP keys supported only for IPv4/6\n");
+		return -EINVAL;
+	}
+
+	key = skb_flow_dissector_target(f->dissector,
+					FLOW_DISSECTOR_KEY_IP,
+					f->key);
+	mask = skb_flow_dissector_target(f->dissector,
+					 FLOW_DISSECTOR_KEY_IP,
+					 f->mask);
+	mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_TTL_,
+				       key->ttl, mask->ttl);
+
+	mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_ECN,
+				       key->tos & 0x3, mask->tos & 0x3);
+
+	mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_DSCP,
+				       key->tos >> 6, mask->tos >> 6);
+
+	return 0;
+}
+
 static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,
 				 struct net_device *dev,
 				 struct mlxsw_sp_acl_rule_info *rulei,
 				 struct tc_cls_flower_offload *f)
 {
+	u16 n_proto_mask = 0;
+	u16 n_proto_key = 0;
 	u16 addr_type = 0;
 	u8 ip_proto = 0;
 	int err;
@@ -229,6 +264,7 @@ static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,
 	      BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
 	      BIT(FLOW_DISSECTOR_KEY_PORTS) |
 	      BIT(FLOW_DISSECTOR_KEY_TCP) |
+	      BIT(FLOW_DISSECTOR_KEY_IP) |
 	      BIT(FLOW_DISSECTOR_KEY_VLAN))) {
 		dev_err(mlxsw_sp->bus_info->dev, "Unsupported key\n");
 		return -EOPNOTSUPP;
@@ -253,8 +289,8 @@ static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,
 			skb_flow_dissector_target(f->dissector,
 						  FLOW_DISSECTOR_KEY_BASIC,
 						  f->mask);
-		u16 n_proto_key = ntohs(key->n_proto);
-		u16 n_proto_mask = ntohs(mask->n_proto);
+		n_proto_key = ntohs(key->n_proto);
+		n_proto_mask = ntohs(mask->n_proto);
 
 		if (n_proto_key == ETH_P_ALL) {
 			n_proto_key = 0;
@@ -324,6 +360,10 @@ static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,
 	if (err)
 		return err;
 
+	err = mlxsw_sp_flower_parse_ip(mlxsw_sp, rulei, f, n_proto_key & n_proto_mask);
+	if (err)
+		return err;
+
 	return mlxsw_sp_flower_parse_actions(mlxsw_sp, dev, rulei, f->exts);
 }