* See the License for the specific language governing permissions and
* limitations under the License.
*/
+/**
+ * @file
+ * @brief Functions for decapsulating VXLAN GPE tunnels
+ *
+*/
#include <vlib/vlib.h>
#include <vnet/pg/pg.h>
vlib_node_registration_t vxlan_gpe_input_node;
+/**
+ * @brief Struct for VXLAN GPE decap packet tracing
+ *
+ */
typedef struct {
u32 next_index;
u32 tunnel_index;
u32 error;
} vxlan_gpe_rx_trace_t;
+/**
+ * @brief Tracing function for VXLAN GPE packet decapsulation
+ *
+ * @param *s
+ * @param *args
+ *
+ * @return *s
+ *
+ */
static u8 * format_vxlan_gpe_rx_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
return s;
}
-
+/**
+ * @brief Tracing function for VXLAN GPE packet decapsulation including length
+ *
+ * @param *s
+ * @param *args
+ *
+ * @return *s
+ *
+ */
static u8 * format_vxlan_gpe_with_length (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
return s;
}
+/**
+ * @brief Common processing for IPv4 and IPv6 VXLAN GPE decap dispatch functions
+ *
+ * It is worth noting that other than trivial UDP forwarding (transit), VXLAN GPE
+ * tunnels are "terminate local". This means that there is no "TX" interface for this
+ * decap case, so that field in the buffer_metadata can be "used for something else".
+ * The something else in this case is, for the IPv4/IPv6 inner-packet type case, the
+ * FIB index used to look up the inner-packet's adjacency.
+ *
+ * vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index;
+ *
+ * @param *vm
+ * @param *node
+ * @param *from_frame
+ * @param is_ip4
+ *
+ * @return from_frame->n_vectors
+ *
+ */
always_inline uword
vxlan_gpe_input (vlib_main_t * vm,
vlib_node_runtime_t * node,
u32 cpu_index = os_get_cpu_number ();
u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
- memset (&last_key4, 0xff, sizeof(last_key4));
+ if (is_ip4)
+ memset (&last_key4, 0xff, sizeof(last_key4));
+ else
+ memset (&last_key6, 0xff, sizeof(last_key6));
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
key4_0.pad = 0;
key4_1.pad = 0;
+ }
+ else /* is_ip6 */
+ {
+ next0 = (iuvn6_0->vxlan.protocol < node->n_next_nodes) ?
+ iuvn6_0->vxlan.protocol : VXLAN_GPE_INPUT_NEXT_DROP;
+ next1 = (iuvn6_1->vxlan.protocol < node->n_next_nodes) ?
+ iuvn6_1->vxlan.protocol : VXLAN_GPE_INPUT_NEXT_DROP;
+
+ key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0];
+ key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1];
+ key6_1.local.as_u64[0] = iuvn6_1->ip6.dst_address.as_u64[0];
+ key6_1.local.as_u64[1] = iuvn6_1->ip6.dst_address.as_u64[1];
+
+ key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0];
+ key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1];
+ key6_1.remote.as_u64[0] = iuvn6_1->ip6.src_address.as_u64[0];
+ key6_1.remote.as_u64[1] = iuvn6_1->ip6.src_address.as_u64[1];
+
+ key6_0.vni = iuvn6_0->vxlan.vni_res;
+ key6_1.vni = iuvn6_1->vxlan.vni_res;
+ }
+ /* Processing packet 0*/
+ if (is_ip4)
+ {
/* Processing for key4_0 */
if (PREDICT_FALSE((key4_0.as_u64[0] != last_key4.as_u64[0])
|| (key4_0.as_u64[1] != last_key4.as_u64[1])))
}
else /* is_ip6 */
{
- next0 = (iuvn6_0->vxlan.protocol < node->n_next_nodes) ?
- iuvn6_0->vxlan.protocol : VXLAN_GPE_INPUT_NEXT_DROP;
- next1 = (iuvn6_1->vxlan.protocol < node->n_next_nodes) ?
- iuvn6_1->vxlan.protocol : VXLAN_GPE_INPUT_NEXT_DROP;
-
- key6_0.local.as_u64[0] = iuvn6_0->ip6.dst_address.as_u64[0];
- key6_0.local.as_u64[1] = iuvn6_0->ip6.dst_address.as_u64[1];
- key6_1.local.as_u64[0] = iuvn6_1->ip6.dst_address.as_u64[0];
- key6_1.local.as_u64[1] = iuvn6_1->ip6.dst_address.as_u64[1];
-
- key6_0.remote.as_u64[0] = iuvn6_0->ip6.src_address.as_u64[0];
- key6_0.remote.as_u64[1] = iuvn6_0->ip6.src_address.as_u64[1];
- key6_1.remote.as_u64[0] = iuvn6_1->ip6.src_address.as_u64[0];
- key6_1.remote.as_u64[1] = iuvn6_1->ip6.src_address.as_u64[1];
-
- key6_0.vni = iuvn6_0->vxlan.vni_res;
- key6_1.vni = iuvn6_1->vxlan.vni_res;
-
/* Processing for key6_0 */
if (PREDICT_FALSE(memcmp (&key6_0, &last_key6, sizeof(last_key6)) != 0))
{
/* Required to make the l2 tag push / pop code work on l2 subifs */
vnet_update_l2_len (b0);
- /*
+ /**
* ip[46] lookup in the configured FIB
*/
vnet_buffer(b0)->sw_if_index[VLIB_TX] = t0->decap_fib_index;
return from_frame->n_vectors;
}
+/**
+ * @brief Graph processing dispatch function for IPv4 VXLAN GPE
+ *
+ * @node vxlan4-gpe-input
+ * @param *vm
+ * @param *node
+ * @param *from_frame
+ *
+ * @return from_frame->n_vectors
+ *
+ */
static uword
vxlan4_gpe_input (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
return vxlan_gpe_input (vm, node, from_frame, /* is_ip4 */1);
}
+/**
+ * @brief Graph processing dispatch function for IPv6 VXLAN GPE
+ *
+ * @node vxlan6-gpe-input
+ * @param *vm
+ * @param *node
+ * @param *from_frame
+ *
+ * @return from_frame->n_vectors - uword
+ *
+ */
static uword
vxlan6_gpe_input (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
return vxlan_gpe_input (vm, node, from_frame, /* is_ip4 */0);
}
+/**
+ * @brief VXLAN GPE error strings
+ */
static char * vxlan_gpe_error_strings[] = {
#define vxlan_gpe_error(n,s) s,
#include <vnet/vxlan-gpe/vxlan_gpe_error.def>
// $$$$ .unformat_buffer = unformat_vxlan_gpe_header,
};
-VLIB_NODE_FUNCTION_MULTIARCH (vxlan4_gpe_input_node, vxlan4_gpe_input)
+VLIB_NODE_FUNCTION_MULTIARCH (vxlan4_gpe_input_node, vxlan4_gpe_input);
VLIB_REGISTER_NODE (vxlan6_gpe_input_node) = {
.function = vxlan6_gpe_input,
// $$$$ .unformat_buffer = unformat_vxlan_gpe_header,
};
-VLIB_NODE_FUNCTION_MULTIARCH (vxlan6_gpe_input_node, vxlan6_gpe_input)
+VLIB_NODE_FUNCTION_MULTIARCH (vxlan6_gpe_input_node, vxlan6_gpe_input);
Code Review / vpp.git / blobdiff