Adding create floatingip operation
diff --git a/openstack/networking/v2/extensions/layer3/floatingips/doc.go b/openstack/networking/v2/extensions/layer3/floatingips/doc.go
new file mode 100644
index 0000000..6648963
--- /dev/null
+++ b/openstack/networking/v2/extensions/layer3/floatingips/doc.go
@@ -0,0 +1 @@
+package floatingips
diff --git a/openstack/networking/v2/extensions/layer3/floatingips/requests.go b/openstack/networking/v2/extensions/layer3/floatingips/requests.go
new file mode 100644
index 0000000..5b60710
--- /dev/null
+++ b/openstack/networking/v2/extensions/layer3/floatingips/requests.go
@@ -0,0 +1,65 @@
+package floatingips
+
+import (
+	"fmt"
+
+	"github.com/racker/perigee"
+	"github.com/rackspace/gophercloud"
+)
+
+type CreateOpts struct {
+	FloatingNetworkID string
+	PortID            string
+	FixedIP           string
+	TenantID          string
+}
+
+var (
+	errFloatingNetworkIDRequired = fmt.Errorf("A NetworkID is required")
+	errPortIDRequired            = fmt.Errorf("A PortID is required")
+)
+
+func Create(c *gophercloud.ServiceClient, opts CreateOpts) CreateResult {
+	var res CreateResult
+
+	// Validate
+	if opts.FloatingNetworkID == "" {
+		res.Err = errFloatingNetworkIDRequired
+		return res
+	}
+	if opts.PortID == "" {
+		res.Err = errPortIDRequired
+		return res
+	}
+
+	// Define structures
+	type floatingIP struct {
+		FloatingNetworkID string `json:"floating_network_id"`
+		PortID            string `json:"port_id"`
+		FixedIP           string `json:"fixed_ip_address,omitempty"`
+		TenantID          string `json:"tenant_id,omitempty"`
+	}
+	type request struct {
+		FloatingIP floatingIP `json:"floatingip"`
+	}
+
+	// Populate request body
+	reqBody := request{FloatingIP: floatingIP{
+		FloatingNetworkID: opts.FloatingNetworkID,
+		PortID:            opts.PortID,
+		FixedIP:           opts.FixedIP,
+		TenantID:          opts.TenantID,
+	}}
+
+	// Send request to API
+	_, err := perigee.Request("POST", rootURL(c), perigee.Options{
+		MoreHeaders: c.Provider.AuthenticatedHeaders(),
+		ReqBody:     &reqBody,
+		Results:     &res.Resp,
+		OkCodes:     []int{201},
+	})
+
+	res.Err = err
+
+	return res
+}
diff --git a/openstack/networking/v2/extensions/layer3/floatingips/requests_test.go b/openstack/networking/v2/extensions/layer3/floatingips/requests_test.go
new file mode 100644
index 0000000..c80e90c
--- /dev/null
+++ b/openstack/networking/v2/extensions/layer3/floatingips/requests_test.go
@@ -0,0 +1,71 @@
+package floatingips
+
+import (
+	"fmt"
+	"net/http"
+	"testing"
+
+	"github.com/rackspace/gophercloud"
+	th "github.com/rackspace/gophercloud/testhelper"
+)
+
+const tokenID = "123"
+
+func serviceClient() *gophercloud.ServiceClient {
+	return &gophercloud.ServiceClient{
+		Provider: &gophercloud.ProviderClient{TokenID: tokenID},
+		Endpoint: th.Endpoint(),
+	}
+}
+
+func TestCreate(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+
+	th.Mux.HandleFunc("/v2.0/floatingips", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "POST")
+		th.TestHeader(t, r, "X-Auth-Token", tokenID)
+		th.TestHeader(t, r, "Content-Type", "application/json")
+		th.TestHeader(t, r, "Accept", "application/json")
+		th.TestJSONRequest(t, r, `
+{
+    "floatingip": {
+        "floating_network_id": "376da547-b977-4cfe-9cba-275c80debf57",
+        "port_id": "ce705c24-c1ef-408a-bda3-7bbd946164ab"
+    }
+}
+			`)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusCreated)
+
+		fmt.Fprintf(w, `
+{
+    "floatingip": {
+        "router_id": "d23abc8d-2991-4a55-ba98-2aaea84cc72f",
+        "tenant_id": "4969c491a3c74ee4af974e6d800c62de",
+        "floating_network_id": "376da547-b977-4cfe-9cba-275c80debf57",
+        "fixed_ip_address": "10.0.0.3",
+        "floating_ip_address": "",
+        "port_id": "ce705c24-c1ef-408a-bda3-7bbd946164ab",
+        "id": "2f245a7b-796b-4f26-9cf9-9e82d248fda7"
+    }
+}
+		`)
+	})
+
+	options := CreateOpts{
+		FloatingNetworkID: "376da547-b977-4cfe-9cba-275c80debf57",
+		PortID:            "ce705c24-c1ef-408a-bda3-7bbd946164ab",
+	}
+
+	ip, err := Create(serviceClient(), options).Extract()
+	th.AssertNoErr(t, err)
+
+	th.AssertEquals(t, "2f245a7b-796b-4f26-9cf9-9e82d248fda7", ip.ID)
+	th.AssertEquals(t, "4969c491a3c74ee4af974e6d800c62de", ip.TenantID)
+	th.AssertEquals(t, "376da547-b977-4cfe-9cba-275c80debf57", ip.FloatingNetworkID)
+	th.AssertEquals(t, "", ip.FloatingIP)
+	th.AssertEquals(t, "ce705c24-c1ef-408a-bda3-7bbd946164ab", ip.PortID)
+	th.AssertEquals(t, "10.0.0.3", ip.FixedIP)
+}
diff --git a/openstack/networking/v2/extensions/layer3/floatingips/results.go b/openstack/networking/v2/extensions/layer3/floatingips/results.go
new file mode 100644
index 0000000..8c61f13
--- /dev/null
+++ b/openstack/networking/v2/extensions/layer3/floatingips/results.go
@@ -0,0 +1,42 @@
+package floatingips
+
+import (
+	"fmt"
+
+	"github.com/mitchellh/mapstructure"
+	"github.com/rackspace/gophercloud"
+)
+
+type FloatingIP struct {
+	ID                string `json:"id" mapstructure:"id"`
+	FloatingNetworkID string `json:"floating_network_id" mapstructure:"floating_network_id"`
+	FloatingIP        string `json:"floating_ip_address" mapstructure:"floating_ip_address"`
+	PortID            string `json:"port_id" mapstructure:"port_id"`
+	FixedIP           string `json:"fixed_ip_address" mapstructure:"fixed_ip_address"`
+	TenantID          string `json:"tenant_id" mapstructure:"tenant_id"`
+}
+
+type commonResult struct {
+	gophercloud.CommonResult
+}
+
+func (r commonResult) Extract() (*FloatingIP, error) {
+	if r.Err != nil {
+		return nil, r.Err
+	}
+
+	var res struct {
+		FloatingIP *FloatingIP `json:"floatingip"`
+	}
+
+	err := mapstructure.Decode(r.Resp, &res)
+	if err != nil {
+		return nil, fmt.Errorf("Error decoding Neutron floating IP: %v", err)
+	}
+
+	return res.FloatingIP, nil
+}
+
+type CreateResult struct {
+	commonResult
+}
diff --git a/openstack/networking/v2/extensions/layer3/floatingips/urls.go b/openstack/networking/v2/extensions/layer3/floatingips/urls.go
new file mode 100644
index 0000000..dbe3f9f
--- /dev/null
+++ b/openstack/networking/v2/extensions/layer3/floatingips/urls.go
@@ -0,0 +1,16 @@
+package floatingips
+
+import "github.com/rackspace/gophercloud"
+
+const (
+	version      = "v2.0"
+	resourcePath = "floatingips"
+)
+
+func rootURL(c *gophercloud.ServiceClient) string {
+	return c.ServiceURL(version, resourcePath)
+}
+
+func resourceURL(c *gophercloud.ServiceClient, id string) string {
+	return c.ServiceURL(version, resourcePath, id)
+}
diff --git a/openstack/networking/v2/extensions/layer3/routers/urls.go b/openstack/networking/v2/extensions/layer3/routers/urls.go
new file mode 100644
index 0000000..512c8a4
--- /dev/null
+++ b/openstack/networking/v2/extensions/layer3/routers/urls.go
@@ -0,0 +1,24 @@
+package routers
+
+import "github.com/rackspace/gophercloud"
+
+const (
+	version      = "v2.0"
+	resourcePath = "routers"
+)
+
+func rootURL(c *gophercloud.ServiceClient) string {
+	return c.ServiceURL(version, resourcePath)
+}
+
+func resourceURL(c *gophercloud.ServiceClient, id string) string {
+	return c.ServiceURL(version, resourcePath, id)
+}
+
+func addInterfaceURL(c *gophercloud.ServiceClient, id string) string {
+	return c.ServiceURL(version, resourcePath, id, "add_router_interface")
+}
+
+func removeInterfaceURL(c *gophercloud.ServiceClient, id string) string {
+	return c.ServiceURL(version, resourcePath, id, "remove_router_interface")
+}