ethernet: configure system default ethernet MTU
[vpp.git] / src / vnet / ethernet / interface.c
index bef13b8..3b9093c 100644 (file)
 #include <vnet/ip/ip.h>
 #include <vnet/pg/pg.h>
 #include <vnet/ethernet/ethernet.h>
+//#include <vnet/ethernet/arp.h>
 #include <vnet/l2/l2_input.h>
+#include <vnet/l2/l2_bd.h>
 #include <vnet/adj/adj.h>
+#include <vnet/adj/adj_mcast.h>
+#include <vnet/ip-neighbor/ip_neighbor.h>
 
 /**
  * @file
@@ -51,7 +55,7 @@
  * This file contains code to manage loopback interfaces.
  */
 
-const u8 *
+static const u8 *
 ethernet_ip4_mcast_dst_addr (void)
 {
   const static u8 ethernet_mcast_dst_mac[] = {
@@ -61,7 +65,7 @@ ethernet_ip4_mcast_dst_addr (void)
   return (ethernet_mcast_dst_mac);
 }
 
-const u8 *
+static const u8 *
 ethernet_ip6_mcast_dst_addr (void)
 {
   const static u8 ethernet_mcast_dst_mac[] = {
@@ -151,7 +155,7 @@ ethernet_build_rewrite (vnet_main_t * vnm,
       if (dst_address)
        clib_memcpy (h->dst_address, dst_address, sizeof (h->dst_address));
       else
-       memset (h->dst_address, ~0, sizeof (h->dst_address));   /* broadcast */
+       clib_memset (h->dst_address, ~0, sizeof (h->dst_address));      /* broadcast */
     }
 
   if (PREDICT_FALSE (!is_p2p) && sub_sw->sub.eth.flags.one_tag)
@@ -193,32 +197,80 @@ ethernet_build_rewrite (vnet_main_t * vnm,
 void
 ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
 {
-  ip_adjacency_t *adj;
-
-  adj = adj_get (ai);
-
   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
+
   if ((si->type == VNET_SW_INTERFACE_TYPE_P2P) ||
       (si->type == VNET_SW_INTERFACE_TYPE_PIPE))
     {
       default_update_adjacency (vnm, sw_if_index, ai);
     }
-  else if (FIB_PROTOCOL_IP4 == adj->ia_nh_proto)
-    {
-      arp_update_adjacency (vnm, sw_if_index, ai);
-    }
-  else if (FIB_PROTOCOL_IP6 == adj->ia_nh_proto)
-    {
-      ip6_ethernet_update_adjacency (vnm, sw_if_index, ai);
-    }
   else
     {
-      ASSERT (0);
+      ip_adjacency_t *adj;
+
+      adj = adj_get (ai);
+
+      switch (adj->lookup_next_index)
+       {
+       case IP_LOOKUP_NEXT_GLEAN:
+         adj_glean_update_rewrite (ai);
+         break;
+       case IP_LOOKUP_NEXT_ARP:
+         ip_neighbor_update (vnm, ai);
+         break;
+       case IP_LOOKUP_NEXT_BCAST:
+         adj_nbr_update_rewrite (ai,
+                                 ADJ_NBR_REWRITE_FLAG_COMPLETE,
+                                 ethernet_build_rewrite
+                                 (vnm,
+                                  adj->rewrite_header.sw_if_index,
+                                  adj->ia_link,
+                                  VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST));
+         break;
+       case IP_LOOKUP_NEXT_MCAST:
+         {
+           /*
+            * Construct a partial rewrite from the known ethernet mcast dest MAC
+            */
+           u8 *rewrite;
+           u8 offset;
+
+           rewrite = ethernet_build_rewrite
+             (vnm,
+              sw_if_index,
+              adj->ia_link,
+              (adj->ia_nh_proto == FIB_PROTOCOL_IP6 ?
+               ethernet_ip6_mcast_dst_addr () :
+               ethernet_ip4_mcast_dst_addr ()));
+
+           /*
+            * Complete the remaining fields of the adj's rewrite to direct the
+            * complete of the rewrite at switch time by copying in the IP
+            * dst address's bytes.
+            * Ofset is 2 bytes into the destintation address.
+            */
+           offset = vec_len (rewrite) - 2;
+           adj_mcast_update_rewrite (ai, rewrite, offset);
+
+           break;
+         }
+       case IP_LOOKUP_NEXT_DROP:
+       case IP_LOOKUP_NEXT_PUNT:
+       case IP_LOOKUP_NEXT_LOCAL:
+       case IP_LOOKUP_NEXT_REWRITE:
+       case IP_LOOKUP_NEXT_MCAST_MIDCHAIN:
+       case IP_LOOKUP_NEXT_MIDCHAIN:
+       case IP_LOOKUP_NEXT_ICMP_ERROR:
+       case IP_LOOKUP_N_NEXT:
+         ASSERT (0);
+         break;
+       }
     }
 }
 
 static clib_error_t *
-ethernet_mac_change (vnet_hw_interface_t * hi, char *mac_address)
+ethernet_mac_change (vnet_hw_interface_t * hi,
+                    const u8 * old_address, const u8 * mac_address)
 {
   ethernet_interface_t *ei;
   ethernet_main_t *em;
@@ -231,8 +283,12 @@ ethernet_mac_change (vnet_hw_interface_t * hi, char *mac_address)
   clib_memcpy (hi->hw_address, mac_address, vec_len (hi->hw_address));
 
   clib_memcpy (ei->address, (u8 *) mac_address, sizeof (ei->address));
-  ethernet_arp_change_mac (hi->sw_if_index);
-  ethernet_ndp_change_mac (hi->sw_if_index);
+
+  {
+    ethernet_address_change_ctx_t *cb;
+    vec_foreach (cb, em->address_change_callbacks)
+      cb->function (em, hi->sw_if_index, cb->function_opaque);
+  }
 
   return (NULL);
 }
@@ -275,7 +331,7 @@ clib_error_t *
 ethernet_register_interface (vnet_main_t * vnm,
                             u32 dev_class_index,
                             u32 dev_instance,
-                            u8 * address,
+                            const u8 * address,
                             u32 * hw_if_index_return,
                             ethernet_flag_change_function_t flag_change)
 {
@@ -303,11 +359,12 @@ ethernet_register_interface (vnet_main_t * vnm,
   hi->max_packet_bytes = hi->max_supported_packet_bytes =
     ETHERNET_MAX_PACKET_BYTES;
 
-  /* Standard default ethernet MTU. */
-  vnet_sw_interface_set_mtu (vnm, hi->sw_if_index, 9000);
+  /* Default ethernet MTU, 9000 unless set by ethernet_config see below */
+  vnet_sw_interface_set_mtu (vnm, hi->sw_if_index, em->default_mtu);
 
   clib_memcpy (ei->address, address, sizeof (ei->address));
   vec_add (hi->hw_address, address, sizeof (ei->address));
+  CLIB_MEM_UNPOISON (hi->hw_address, 8);
 
   if (error)
     {
@@ -340,6 +397,7 @@ ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index)
          if (vlan_table->vlans[idx].qinqs)
            {
              pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
+             vlan_table->vlans[idx].qinqs = 0;
            }
        }
       pool_put_index (em->vlan_pool, main_intf->dot1q_vlans);
@@ -353,6 +411,7 @@ ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index)
          if (vlan_table->vlans[idx].qinqs)
            {
              pool_put_index (em->qinq_pool, vlan_table->vlans[idx].qinqs);
+             vlan_table->vlans[idx].qinqs = 0;
            }
        }
       pool_put_index (em->vlan_pool, main_intf->dot1ad_vlans);
@@ -375,6 +434,7 @@ ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
   ASSERT (hi->hw_class_index == ethernet_hw_interface_class.index);
 
   ei = pool_elt_at_index (em->interfaces, hi->hw_instance);
+  ei->flags = flags;
   if (ei->flag_change)
     return ei->flag_change (vnm, hi, flags);
   return (u32) ~ 0;
@@ -401,7 +461,7 @@ simulated_ethernet_interface_tx (vlib_main_t * vm,
   u32 new_tx_sw_if_index = ~0;
 
   n_left_from = frame->n_vectors;
-  from = vlib_frame_args (frame);
+  from = vlib_frame_vector_args (frame);
 
   vlib_get_buffers (vm, from, bufs, n_left_from);
   b = bufs;
@@ -633,18 +693,26 @@ simulated_ethernet_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
   return 0;
 }
 
+static clib_error_t *
+simulated_ethernet_mac_change (vnet_hw_interface_t * hi,
+                              const u8 * old_address, const u8 * mac_address)
+{
+  l2input_interface_mac_change (hi->sw_if_index, old_address, mac_address);
+
+  return (NULL);
+}
+
+
 /* *INDENT-OFF* */
 VNET_DEVICE_CLASS (ethernet_simulated_device_class) = {
   .name = "Loopback",
   .format_device_name = format_simulated_ethernet_name,
   .tx_function = simulated_ethernet_interface_tx,
   .admin_up_down_function = simulated_ethernet_admin_up_down,
+  .mac_addr_change_function = simulated_ethernet_mac_change,
 };
 /* *INDENT-ON* */
 
-VLIB_DEVICE_TX_FUNCTION_MULTIARCH (ethernet_simulated_device_class,
-                                  simulated_ethernet_interface_tx);
-
 /*
  * Maintain a bitmap of allocated loopback instance numbers.
  */
@@ -735,7 +803,7 @@ vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address,
 
   *sw_if_indexp = (u32) ~ 0;
 
-  memset (address, 0, sizeof (address));
+  clib_memset (address, 0, sizeof (address));
 
   /*
    * Allocate a loopback instance.  Either select on dynamically
@@ -807,7 +875,7 @@ create_simulated_ethernet_interfaces (vlib_main_t * vm,
   u8 is_specified = 0;
   u32 user_instance = 0;
 
-  memset (mac_address, 0, sizeof (mac_address));
+  clib_memset (mac_address, 0, sizeof (mac_address));
 
   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
     {
@@ -878,6 +946,53 @@ ethernet_get_interface (ethernet_main_t * em, u32 hw_if_index)
          index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
 }
 
+mac_address_t *
+ethernet_interface_add_del_address (ethernet_main_t * em,
+                                   u32 hw_if_index, const u8 * address,
+                                   u8 is_add)
+{
+  ethernet_interface_t *ei = ethernet_get_interface (em, hw_if_index);
+  mac_address_t *if_addr = 0;
+
+  /* return if there is not an ethernet interface for this hw interface */
+  if (!ei)
+    return 0;
+
+  /* determine whether the address is configured on the interface */
+  vec_foreach (if_addr, ei->secondary_addrs)
+  {
+    if (!ethernet_mac_address_equal (if_addr->bytes, address))
+      continue;
+
+    break;
+  }
+
+  if (if_addr && vec_is_member (ei->secondary_addrs, if_addr))
+    {
+      /* delete found address */
+      if (!is_add)
+       {
+         vec_delete (ei->secondary_addrs, 1, if_addr - ei->secondary_addrs);
+         if_addr = 0;
+       }
+      /* address already found, so nothing needs to be done if adding */
+    }
+  else
+    {
+      /* if_addr could be 0 or past the end of the vector. reset to 0 */
+      if_addr = 0;
+
+      /* add new address */
+      if (is_add)
+       {
+         vec_add2 (ei->secondary_addrs, if_addr, 1);
+         clib_memcpy (&if_addr->bytes, address, sizeof (if_addr->bytes));
+       }
+    }
+
+  return if_addr;
+}
+
 int
 vnet_delete_loopback_interface (u32 sw_if_index)
 {
@@ -898,6 +1013,48 @@ vnet_delete_loopback_interface (u32 sw_if_index)
   return 0;
 }
 
+int
+vnet_create_sub_interface (u32 sw_if_index, u32 id,
+                          u32 flags, u16 inner_vlan_id, u16 outer_vlan_id,
+                          u32 * sub_sw_if_index)
+{
+  vnet_main_t *vnm = vnet_get_main ();
+  vnet_interface_main_t *im = &vnm->interface_main;
+  vnet_hw_interface_t *hi;
+  u64 sup_and_sub_key = ((u64) (sw_if_index) << 32) | (u64) id;
+  vnet_sw_interface_t template;
+  uword *p;
+  u64 *kp;
+
+  hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
+
+  p = hash_get_mem (im->sw_if_index_by_sup_and_sub, &sup_and_sub_key);
+  if (p)
+    {
+      return (VNET_API_ERROR_VLAN_ALREADY_EXISTS);
+    }
+
+  clib_memset (&template, 0, sizeof (template));
+  template.type = VNET_SW_INTERFACE_TYPE_SUB;
+  template.flood_class = VNET_FLOOD_CLASS_NORMAL;
+  template.sup_sw_if_index = sw_if_index;
+  template.sub.id = id;
+  template.sub.eth.raw_flags = flags;
+  template.sub.eth.outer_vlan_id = outer_vlan_id;
+  template.sub.eth.inner_vlan_id = inner_vlan_id;
+
+  if (vnet_create_sw_interface (vnm, &template, sub_sw_if_index))
+    return (VNET_API_ERROR_UNSPECIFIED);
+
+  kp = clib_mem_alloc (sizeof (*kp));
+  *kp = sup_and_sub_key;
+
+  hash_set (hi->sub_interface_sw_if_index_by_id, id, *sub_sw_if_index);
+  hash_set_mem (im->sw_if_index_by_sup_and_sub, kp, *sub_sw_if_index);
+
+  return (0);
+}
+
 int
 vnet_delete_sub_interface (u32 sw_if_index)
 {
@@ -1035,6 +1192,29 @@ VLIB_CLI_COMMAND (delete_sub_interface_command, static) = {
 };
 /* *INDENT-ON* */
 
+static clib_error_t *
+ethernet_config (vlib_main_t * vm, unformat_input_t * input)
+{
+  ethernet_main_t *em = &ethernet_main;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "default-mtu %u", &em->default_mtu))
+       {
+         if (em->default_mtu < 64 || em->default_mtu > 9000)
+           return clib_error_return (0, "default MTU must be >=64, <=9000");
+       }
+      else
+       {
+         return clib_error_return (0, "unknown input '%U'",
+                                   format_unformat_error, input);
+       }
+    }
+  return 0;
+}
+
+VLIB_CONFIG_FUNCTION (ethernet_config, "ethernet");
+
 /*
  * fd.io coding-style-patch-verification: ON
  *