Reorganize source tree to use single autotools instance

Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 266 insertions, 0 deletions

diff --git a/src/vnet/l2/l2_input.h b/src/vnet/l2/l2_input.h
new file mode 100644
index 00000000000..f3fada6a7d3
--- /dev/null
+++ b/src/vnet/l2/l2_input.h
@@ -0,0 +1,266 @@
+/*
+ * l2_input.h : layer 2 input packet processing
+ *
+ * Copyright (c) 2013 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef included_vnet_l2_input_h
+#define included_vnet_l2_input_h
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/l2/l2_bd.h>
+#include <vnet/ethernet/packet.h>
+#include <vnet/ip/ip.h>
+
+/* Per-subinterface L2 feature configuration */
+
+typedef struct
+{
+
+  union
+  {
+    u16 bd_index;		/* bridge domain id */
+    u32 output_sw_if_index;	/* for xconnect */
+  };
+
+  /* Interface mode. If both are 0, this interface is in L3 mode */
+  u8 xconnect;
+  u8 bridge;
+
+  /* this is the bvi interface for the bridge-domain */
+  u8 bvi;
+
+  /* config for which input features are configured on this interface */
+  u32 feature_bitmap;
+
+  /* some of these flags are also in the feature bitmap */
+  u8 learn_enable;
+  u8 fwd_enable;
+  u8 flood_enable;
+
+  /* split horizon group */
+  u8 shg;
+
+} l2_input_config_t;
+
+
+typedef struct
+{
+
+  /* Next nodes for the feature bitmap */
+  u32 feat_next_node_index[32];
+
+  /* config vector indexed by sw_if_index */
+  l2_input_config_t *configs;
+
+  /* bridge domain config vector indexed by bd_index */
+  l2_bridge_domain_t *bd_configs;
+
+  /* convenience variables */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+} l2input_main_t;
+
+extern l2input_main_t l2input_main;
+
+extern vlib_node_registration_t l2input_node;
+
+static_always_inline l2_bridge_domain_t *
+l2input_bd_config_from_index (l2input_main_t * l2im, u32 bd_index)
+{
+  l2_bridge_domain_t *bd_config;
+
+  bd_config = vec_elt_at_index (l2im->bd_configs, bd_index);
+  return bd_is_valid (bd_config) ? bd_config : NULL;
+}
+
+/* L2 input indication packet is from BVI, using -2 */
+#define L2INPUT_BVI ((u32) (~0-1))
+
+/* L2 input features */
+
+/* Mappings from feature ID to graph node name */
+#define foreach_l2input_feat                    \
+ _(DROP,          "feature-bitmap-drop")        \
+ _(XCONNECT,      "l2-output")                  \
+ _(FLOOD,         "l2-flood")                   \
+ _(ARP_TERM,      "arp-term-l2bd")              \
+ _(UU_FLOOD,      "l2-flood")                   \
+ _(FWD,           "l2-fwd")                     \
+ _(RW,            "l2-rw")                      \
+ _(LEARN,         "l2-learn")                   \
+ _(VTR,           "l2-input-vtr")               \
+ _(VPATH,         "vpath-input-l2")             \
+ _(ACL,           "l2-input-acl")               \
+ _(POLICER_CLAS,  "l2-policer-classify")	\
+ _(INPUT_CLASSIFY, "l2-input-classify")
+
+/* Feature bitmap positions */
+typedef enum
+{
+#define _(sym,str) L2INPUT_FEAT_##sym##_BIT,
+  foreach_l2input_feat
+#undef _
+    L2INPUT_N_FEAT,
+} l2input_feat_t;
+
+/* Feature bit masks */
+typedef enum
+{
+#define _(sym,str) L2INPUT_FEAT_##sym = (1<<L2INPUT_FEAT_##sym##_BIT),
+  foreach_l2input_feat
+#undef _
+} l2input_feat_masks_t;
+
+/** Return an array of strings containing graph node names of each feature */
+char **l2input_get_feat_names (void);
+
+
+static_always_inline u8
+bd_feature_flood (l2_bridge_domain_t * bd_config)
+{
+  return ((bd_config->feature_bitmap & L2INPUT_FEAT_FLOOD) ==
+	  L2INPUT_FEAT_FLOOD);
+}
+
+static_always_inline u8
+bd_feature_uu_flood (l2_bridge_domain_t * bd_config)
+{
+  return ((bd_config->feature_bitmap & L2INPUT_FEAT_UU_FLOOD) ==
+	  L2INPUT_FEAT_UU_FLOOD);
+}
+
+static_always_inline u8
+bd_feature_forward (l2_bridge_domain_t * bd_config)
+{
+  return ((bd_config->feature_bitmap & L2INPUT_FEAT_FWD) == L2INPUT_FEAT_FWD);
+}
+
+static_always_inline u8
+bd_feature_learn (l2_bridge_domain_t * bd_config)
+{
+  return ((bd_config->feature_bitmap & L2INPUT_FEAT_LEARN) ==
+	  L2INPUT_FEAT_LEARN);
+}
+
+static_always_inline u8
+bd_feature_arp_term (l2_bridge_domain_t * bd_config)
+{
+  return ((bd_config->feature_bitmap & L2INPUT_FEAT_ARP_TERM) ==
+	  L2INPUT_FEAT_ARP_TERM);
+}
+
+/** Masks for eliminating features that do not apply to a packet */
+
+/** Get a pointer to the config for the given interface */
+l2_input_config_t *l2input_intf_config (u32 sw_if_index);
+
+/* Enable (or disable) the feature in the bitmap for the given interface */
+u32 l2input_intf_bitmap_enable (u32 sw_if_index,
+				u32 feature_bitmap, u32 enable);
+
+/* Sets modifies flags from a bridge domain */
+u32 l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value);
+
+
+#define MODE_L3        0
+#define MODE_L2_BRIDGE 1
+#define MODE_L2_XC     2
+#define MODE_L2_CLASSIFY 3
+
+#define MODE_ERROR_ETH        1
+#define MODE_ERROR_BVI_DEF    2
+
+u32 set_int_l2_mode (vlib_main_t * vm,
+		     vnet_main_t * vnet_main,
+		     u32 mode,
+		     u32 sw_if_index,
+		     u32 bd_index, u32 bvi, u32 shg, u32 xc_sw_if_index);
+
+static inline void
+vnet_update_l2_len (vlib_buffer_t * b)
+{
+  ethernet_header_t *eth;
+  u16 ethertype;
+  u8 vlan_count = 0;
+
+  /* point at currrent l2 hdr */
+  eth = vlib_buffer_get_current (b);
+
+  /*
+   * l2-output pays no attention to this
+   * but the tag push/pop code on an l2 subif needs it.
+   *
+   * Determine l2 header len, check for up to 2 vlans
+   */
+  vnet_buffer (b)->l2.l2_len = sizeof (ethernet_header_t);
+  ethertype = clib_net_to_host_u16 (eth->type);
+  if (ethernet_frame_is_tagged (ethertype))
+    {
+      ethernet_vlan_header_t *vlan;
+      vnet_buffer (b)->l2.l2_len += sizeof (*vlan);
+      vlan_count = 1;
+      vlan = (void *) (eth + 1);
+      ethertype = clib_net_to_host_u16 (vlan->type);
+      if (ethertype == ETHERNET_TYPE_VLAN)
+	{
+	  vnet_buffer (b)->l2.l2_len += sizeof (*vlan);
+	  vlan_count = 2;
+	}
+    }
+  ethernet_buffer_set_vlan_count (b, vlan_count);
+}
+
+/*
+ * Compute flow hash of an ethernet packet, use 5-tuple hash if L3 packet
+ * is ip4 or ip6. Otherwise hash on smac/dmac/etype.
+ * The vlib buffer current pointer is expected to be at ethernet header
+ * and vnet l2.l2_len is exppected to be setup already.
+ */
+static inline u32
+vnet_l2_compute_flow_hash (vlib_buffer_t * b)
+{
+  ethernet_header_t *eh = vlib_buffer_get_current (b);
+  u8 *l3h = (u8 *) eh + vnet_buffer (b)->l2.l2_len;
+  u16 ethertype = clib_net_to_host_u16 (*(u16 *) (l3h - 2));
+
+  if (ethertype == ETHERNET_TYPE_IP4)
+    return ip4_compute_flow_hash ((ip4_header_t *) l3h, IP_FLOW_HASH_DEFAULT);
+  else if (ethertype == ETHERNET_TYPE_IP6)
+    return ip6_compute_flow_hash ((ip6_header_t *) l3h, IP_FLOW_HASH_DEFAULT);
+  else
+    {
+      u32 a, b, c;
+      u32 *ap = (u32 *) & eh->dst_address[2];
+      u32 *bp = (u32 *) & eh->src_address[2];
+      a = *ap;
+      b = *bp;
+      c = ethertype;
+      hash_v3_mix32 (a, b, c);
+      hash_v3_finalize32 (a, b, c);
+      return c;
+    }
+}
+
+#endif
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */