*/
#include <plugins/gbp/gbp.h>
+#include <plugins/gbp/gbp_policy_dpo.h>
+#include <plugins/gbp/gbp_ext_itf.h>
+#include <vnet/fib/ip4_fib.h>
+#include <vnet/fib/ip6_fib.h>
+#include <vnet/dpo/load_balance.h>
#include <vnet/l2/l2_input.h>
#include <vnet/l2/feat_bitmap.h>
#include <vnet/fib/fib_table.h>
{
GBP_SRC_CLASSIFY_NULL,
GBP_SRC_CLASSIFY_PORT,
+ GBP_SRC_CLASSIFY_LPM,
} gbp_src_classify_type_t;
-#define GBP_SRC_N_CLASSIFY (GBP_SRC_CLASSIFY_PORT + 1)
+#define GBP_SRC_N_CLASSIFY (GBP_SRC_CLASSIFY_LPM + 1)
/**
* Grouping of global data for the GBP source EPG classification feature
.runs_before = VNET_FEATURES ("nat66-out2in"),
};
+/* *INDENT-ON* */
+
+typedef enum gbp_lpm_classify_next_t_
+{
+ GPB_LPM_CLASSIFY_DROP,
+} gbp_lpm_classify_next_t;
+
+always_inline dpo_proto_t
+ethertype_to_dpo_proto (const ethernet_header_t * eh0)
+{
+ u16 etype = clib_net_to_host_u16 (eh0->type);
+
+ switch (etype)
+ {
+ case ETHERNET_TYPE_IP4:
+ return (DPO_PROTO_IP4);
+ case ETHERNET_TYPE_IP6:
+ return (DPO_PROTO_IP6);
+ case ETHERNET_TYPE_VLAN:
+ {
+ ethernet_vlan_header_t *vh0;
+
+ vh0 = (ethernet_vlan_header_t *) (eh0 + 1);
+
+ switch (clib_net_to_host_u16 (vh0->type))
+ {
+ case ETHERNET_TYPE_IP4:
+ return (DPO_PROTO_IP4);
+ case ETHERNET_TYPE_IP6:
+ return (DPO_PROTO_IP6);
+ }
+ }
+ }
+
+ return (DPO_PROTO_NONE);
+}
+
+/*
+ * Determine the SRC EPG from a LPM
+ */
+always_inline uword
+gbp_lpm_classify_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ dpo_proto_t dproto, u8 is_recirc)
+{
+ gbp_src_classify_main_t *gscm = &gbp_src_classify_main;
+ u32 n_left_from, *from, *to_next;
+ u32 next_index;
+
+ next_index = 0;
+ n_left_from = frame->n_vectors;
+ from = vlib_frame_vector_args (frame);
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0, sw_if_index0, fib_index0, lbi0;
+ gbp_lpm_classify_next_t next0;
+ const gbp_policy_dpo_t *gpd0;
+ const gbp_ext_itf_t *gx0;
+ const gbp_recirc_t *gr0;
+ const dpo_id_t *dpo0;
+ load_balance_t *lb0;
+ ip4_header_t *ip4_0;
+ ip6_header_t *ip6_0;
+ vlib_buffer_t *b0;
+ epg_id_t src_epg0;
+
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+ next0 = GPB_LPM_CLASSIFY_DROP;
+
+ b0 = vlib_get_buffer (vm, bi0);
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ vnet_buffer2 (b0)->gbp.flags = VXLAN_GBP_GPFLAGS_NONE;
+
+ if (DPO_PROTO_IP4 == dproto)
+ ip4_0 = vlib_buffer_get_current (b0);
+ else if (DPO_PROTO_IP4 == dproto)
+ ip6_0 = vlib_buffer_get_current (b0);
+ else if (DPO_PROTO_ETHERNET == dproto)
+ {
+ const ethernet_header_t *eh0;
+
+ eh0 = vlib_buffer_get_current (b0);
+
+ dproto = ethertype_to_dpo_proto (eh0);
+
+ switch (dproto)
+ {
+ case DPO_PROTO_IP4:
+ ip4_0 = (vlib_buffer_get_current (b0) +
+ vnet_buffer (b0)->l2.l2_len);
+ break;
+ case DPO_PROTO_IP6:
+ ip6_0 = (vlib_buffer_get_current (b0) +
+ vnet_buffer (b0)->l2.l2_len);
+ break;
+ default:
+ /* not IP so no LPM classify possible */
+ src_epg0 = EPG_INVALID;
+ goto trace;
+ }
+ }
+
+ if (is_recirc)
+ {
+ gr0 = gbp_recirc_get (sw_if_index0);
+ fib_index0 = gr0->gr_fib_index[dproto];
+
+ vnet_feature_next (&next0, b0);
+ }
+ else
+ {
+ gx0 = gbp_ext_itf_get (sw_if_index0);
+ fib_index0 = gx0->gx_fib_index[dproto];
+
+ next0 = vnet_l2_feature_next
+ (b0, gscm->l2_input_feat_next[GBP_SRC_CLASSIFY_LPM],
+ L2INPUT_FEAT_GBP_LPM_CLASSIFY);
+ }
+
+ if (DPO_PROTO_IP4 == dproto)
+ {
+ lbi0 = ip4_fib_forwarding_lookup (fib_index0,
+ &ip4_0->src_address);
+ }
+ else if (DPO_PROTO_IP4 == dproto)
+ {
+ lbi0 = ip6_fib_table_fwding_lookup (&ip6_main, fib_index0,
+ &ip6_0->src_address);
+ }
+ else
+ {
+ /* not IP so no LPM classify possible */
+ src_epg0 = EPG_INVALID;
+ goto trace;
+ }
+ lb0 = load_balance_get (lbi0);
+ dpo0 = load_balance_get_bucket_i (lb0, 0);
+
+ if (gbp_policy_dpo_type == dpo0->dpoi_type)
+ {
+ gpd0 = gbp_policy_dpo_get (dpo0->dpoi_index);
+ src_epg0 = gpd0->gpd_epg;
+ }
+ else
+ {
+ /* could not classify => drop */
+ src_epg0 = EPG_INVALID;
+ next0 = GPB_LPM_CLASSIFY_DROP;
+ }
+
+ trace:
+ vnet_buffer2 (b0)->gbp.src_epg = src_epg0;
+
+ if (PREDICT_FALSE ((b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ gbp_classify_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->src_epg = src_epg0;
+ }
+
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ return frame->n_vectors;
+}
+
+static uword
+gbp_ip4_lpm_classify (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return (gbp_lpm_classify_inline (vm, node, frame, DPO_PROTO_IP4, 1));
+}
+
+static uword
+gbp_ip6_lpm_classify (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return (gbp_lpm_classify_inline (vm, node, frame, DPO_PROTO_IP6, 1));
+}
+
+static uword
+gbp_l2_lpm_classify (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return (gbp_lpm_classify_inline (vm, node, frame, DPO_PROTO_ETHERNET, 0));
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (gbp_ip4_lpm_classify_node) = {
+ .function = gbp_ip4_lpm_classify,
+ .name = "ip4-gbp-lpm-classify",
+ .vector_size = sizeof (u32),
+ .format_trace = format_gbp_classify_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = 0,
+ .n_next_nodes = 1,
+ .next_nodes = {
+ [GPB_LPM_CLASSIFY_DROP] = "ip4-drop"
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (gbp_ip4_lpm_classify_node, gbp_ip4_lpm_classify);
+
+VLIB_REGISTER_NODE (gbp_ip6_lpm_classify_node) = {
+ .function = gbp_ip6_lpm_classify,
+ .name = "ip6-gbp-lpm-classify",
+ .vector_size = sizeof (u32),
+ .format_trace = format_gbp_classify_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = 0,
+ .n_next_nodes = 1,
+ .next_nodes = {
+ [GPB_LPM_CLASSIFY_DROP] = "ip6-drop"
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (gbp_ip6_lpm_classify_node, gbp_ip6_lpm_classify);
+
+VLIB_REGISTER_NODE (gbp_l2_lpm_classify_node) = {
+ .function = gbp_l2_lpm_classify,
+ .name = "l2-gbp-lpm-classify",
+ .vector_size = sizeof (u32),
+ .format_trace = format_gbp_classify_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = 0,
+ .n_next_nodes = 1,
+ .next_nodes = {
+ [GPB_LPM_CLASSIFY_DROP] = "error-drop"
+ },
+};
+
+VLIB_NODE_FUNCTION_MULTIARCH (gbp_l2_lpm_classify_node, gbp_l2_lpm_classify);
+
+VNET_FEATURE_INIT (gbp_ip4_lpm_classify_feat_node, static) =
+{
+ .arc_name = "ip4-unicast",
+ .node_name = "ip4-gbp-lpm-classify",
+ .runs_before = VNET_FEATURES ("nat44-out2in"),
+};
+VNET_FEATURE_INIT (gbp_ip6_lpm_classify_feat_node, static) =
+{
+ .arc_name = "ip6-unicast",
+ .node_name = "ip6-gbp-lpm-classify",
+ .runs_before = VNET_FEATURES ("nat66-out2in"),
+};
+
+/* *INDENT-ON* */
+
static clib_error_t *
gbp_src_classify_init (vlib_main_t * vm)
{
L2INPUT_N_FEAT,
l2input_get_feat_names (),
em->l2_input_feat_next[GBP_SRC_CLASSIFY_PORT]);
+ feat_bitmap_init_next_nodes (vm,
+ gbp_l2_lpm_classify_node.index,
+ L2INPUT_N_FEAT,
+ l2input_get_feat_names (),
+ em->l2_input_feat_next[GBP_SRC_CLASSIFY_LPM]);
return 0;
}
Code Review / vpp.git / blobdiff