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authorNeale Ranns <neale.ranns@cisco.com>2018-10-10 07:22:51 -0700
committerDamjan Marion <dmarion@me.com>2018-11-07 12:00:10 +0000
commit93cc3ee3b3a9c9224a1446625882205f3282a949 (patch)
tree077421ee51238c22181a3b3f4871b648bb1299d3 /src/plugins/gbp/gbp_policy_dpo.c
parentc3df1e9a0ab79c1fe254394748ef441ffe224c43 (diff)
GBP Endpoint Learning
Learning GBP endpoints over vxlan-gbp tunnels Change-Id: I1db9fda5a16802d9ad8b4efd4e475614f3b21502 Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
Diffstat (limited to 'src/plugins/gbp/gbp_policy_dpo.c')
-rw-r--r--src/plugins/gbp/gbp_policy_dpo.c68
1 files changed, 57 insertions, 11 deletions
diff --git a/src/plugins/gbp/gbp_policy_dpo.c b/src/plugins/gbp/gbp_policy_dpo.c
index a2d9510b838..fd9dbce8bfa 100644
--- a/src/plugins/gbp/gbp_policy_dpo.c
+++ b/src/plugins/gbp/gbp_policy_dpo.c
@@ -17,6 +17,8 @@
#include <vnet/fib/ip4_fib.h>
#include <vnet/fib/ip6_fib.h>
#include <vnet/dpo/load_balance.h>
+#include <vnet/dpo/drop_dpo.h>
+#include <vnet/vxlan-gbp/vxlan_gbp_packet.h>
#include <plugins/gbp/gbp.h>
#include <plugins/gbp/gbp_policy_dpo.h>
@@ -49,7 +51,7 @@ gbp_policy_dpo_alloc (void)
{
gbp_policy_dpo_t *gpd;
- pool_get (gbp_policy_dpo_pool, gpd);
+ pool_get_zero (gbp_policy_dpo_pool, gpd);
return (gpd);
}
@@ -110,19 +112,24 @@ gbp_policy_dpo_add_or_lock (dpo_proto_t dproto,
dpo_id_t parent = DPO_INVALID;
gpd = gbp_policy_dpo_alloc ();
- clib_memset (gpd, 0, sizeof (*gpd));
gpd->gpd_proto = dproto;
gpd->gpd_sw_if_index = sw_if_index;
gpd->gpd_epg = epg;
- /*
- * stack on the DVR DPO for the output interface
- */
- dvr_dpo_add_or_lock (sw_if_index, dproto, &parent);
+ if (~0 != sw_if_index)
+ {
+ /*
+ * stack on the DVR DPO for the output interface
+ */
+ dvr_dpo_add_or_lock (sw_if_index, dproto, &parent);
+ }
+ else
+ {
+ dpo_copy (&parent, drop_dpo_get (dproto));
+ }
dpo_stack (gbp_policy_dpo_type, dproto, &gpd->gpd_dpo, &parent);
-
dpo_set (dpo, gbp_policy_dpo_type, dproto, gbp_policy_dpo_get_index (gpd));
}
@@ -144,11 +151,36 @@ format_gbp_policy_dpo (u8 * s, va_list * ap)
return (s);
}
+/**
+ * Interpose a policy DPO
+ */
+static void
+gbp_policy_dpo_interpose (const dpo_id_t * original,
+ const dpo_id_t * parent, dpo_id_t * clone)
+{
+ gbp_policy_dpo_t *gpd, *gpd_clone;
+
+ gpd_clone = gbp_policy_dpo_alloc ();
+ gpd = gbp_policy_dpo_get (original->dpoi_index);
+
+ gpd_clone->gpd_proto = gpd->gpd_proto;
+ gpd_clone->gpd_epg = gpd->gpd_epg;
+ gpd_clone->gpd_sw_if_index = gpd->gpd_sw_if_index;
+
+ dpo_stack (gbp_policy_dpo_type,
+ gpd_clone->gpd_proto, &gpd_clone->gpd_dpo, parent);
+
+ dpo_set (clone,
+ gbp_policy_dpo_type,
+ gpd_clone->gpd_proto, gbp_policy_dpo_get_index (gpd_clone));
+}
+
const static dpo_vft_t gbp_policy_dpo_vft = {
.dv_lock = gbp_policy_dpo_lock,
.dv_unlock = gbp_policy_dpo_unlock,
.dv_format = format_gbp_policy_dpo,
.dv_get_urpf = gbp_policy_dpo_get_urpf,
+ .dv_mk_interpose = gbp_policy_dpo_interpose,
};
/**
@@ -195,6 +227,7 @@ typedef struct gbp_policy_dpo_trace_t_
u32 src_epg;
u32 dst_epg;
u32 acl_index;
+ u32 a_bit;
} gbp_policy_dpo_trace_t;
typedef enum
@@ -241,10 +274,18 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
next0 = GBP_POLICY_DROP;
b0 = vlib_get_buffer (vm, bi0);
+
gpd0 =
gbp_policy_dpo_get_i (vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
vnet_buffer (b0)->ip.adj_index[VLIB_TX] = gpd0->gpd_dpo.dpoi_index;
+ if (vnet_buffer2 (b0)->gbp.flags & VXLAN_GBP_GPFLAGS_A)
+ {
+ next0 = gpd0->gpd_dpo.dpoi_next_node;
+ key0.as_u32 = ~0;
+ goto trace;
+ }
+
key0.gck_src = vnet_buffer2 (b0)->gbp.src_epg;
key0.gck_dst = gpd0->gpd_epg;
@@ -256,6 +297,7 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
* intra-epg allowed
*/
next0 = gpd0->gpd_dpo.dpoi_next_node;
+ vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
}
else
{
@@ -287,7 +329,10 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
&trace_bitmap0);
if (action0 > 0)
- next0 = gpd0->gpd_dpo.dpoi_next_node;
+ {
+ vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
+ next0 = gpd0->gpd_dpo.dpoi_next_node;
+ }
}
}
}
@@ -299,7 +344,7 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
*/
next0 = gpd0->gpd_dpo.dpoi_next_node;
}
-
+ trace:
if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
{
gbp_policy_dpo_trace_t *tr;
@@ -308,6 +353,7 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
tr->src_epg = key0.gck_src;
tr->dst_epg = key0.gck_dst;
tr->acl_index = value0.gc_acl_index;
+ tr->a_bit = vnet_buffer2 (b0)->gbp.flags & VXLAN_GBP_GPFLAGS_A;
}
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
@@ -325,8 +371,8 @@ format_gbp_policy_dpo_trace (u8 * s, va_list * args)
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
gbp_policy_dpo_trace_t *t = va_arg (*args, gbp_policy_dpo_trace_t *);
- s = format (s, " src-epg:%d dst-epg:%d acl-index:%d",
- t->src_epg, t->dst_epg, t->acl_index);
+ s = format (s, " src-epg:%d dst-epg:%d acl-index:%d a-bit:%d",
+ t->src_epg, t->dst_epg, t->acl_index, t->a_bit);
return s;
}