dhcp ip: DSCP settings for transmitted DHCP packets

[vpp.git] / src / vnet / ip / ip.c

diff --git a/src/vnet/ip/ip.c b/src/vnet/ip/ip.c
index bd9706b..133767b 100644 (file)
--- a/src/vnet/ip/ip.c
+++ b/src/vnet/ip/ip.c
@@ -31,7 +31,21 @@ ip_is_local_host (ip46_address_t * ip46_address, u8 is_ip4)
   if (is_ip4)
     return (ip46_address->ip4.as_u8[0] == 127);
   else
-    return (ip46_address->as_u64[0] == 0 && ip46_address->as_u64[1] == 1);
+    return (ip46_address->as_u64[0] == 0 &&
+           clib_net_to_host_u64 (ip46_address->as_u64[1]) == 1);
+}
+
+u8
+ip4_is_local_host (ip4_address_t * ip4_address)
+{
+  return (ip4_address->as_u8[0] == 127);
+}
+
+u8
+ip6_is_local_host (ip6_address_t * ip6_address)
+{
+  return (ip6_address->as_u64[0] == 0 &&
+         clib_net_to_host_u64 (ip6_address->as_u64[1]) == 1);
 }
 
 /**
@@ -56,8 +70,8 @@ ip_is_local (u32 fib_index, ip46_address_t * ip46_address, u8 is_ip4)
       prefix.fp_proto = FIB_PROTOCOL_IP6;
     }
 
-  clib_memcpy (&prefix.fp_addr, ip46_address, sizeof (ip46_address_t));
-  fei = fib_table_lookup (0, &prefix);
+  clib_memcpy_fast (&prefix.fp_addr, ip46_address, sizeof (ip46_address_t));
+  fei = fib_table_lookup (fib_index, &prefix);
   flags = fib_entry_get_flags (fei);
 
   return (flags & FIB_ENTRY_FLAG_LOCAL);
@@ -69,7 +83,7 @@ ip_copy (ip46_address_t * dst, ip46_address_t * src, u8 is_ip4)
   if (is_ip4)
     dst->ip4.as_u32 = src->ip4.as_u32;
   else
-    clib_memcpy (&dst->ip6, &src->ip6, sizeof (ip6_address_t));
+    clib_memcpy_fast (&dst->ip6, &src->ip6, sizeof (ip6_address_t));
 }
 
 void
@@ -78,7 +92,8 @@ ip_set (ip46_address_t * dst, void *src, u8 is_ip4)
   if (is_ip4)
     dst->ip4.as_u32 = ((ip4_address_t *) src)->as_u32;
   else
-    clib_memcpy (&dst->ip6, (ip6_address_t *) src, sizeof (ip6_address_t));
+    clib_memcpy_fast (&dst->ip6, (ip6_address_t *) src,
+                     sizeof (ip6_address_t));
 }
 
 u8
@@ -148,6 +163,154 @@ ip_interface_get_first_ip (u32 sw_if_index, u8 is_ip4)
   return 0;
 }
 
+void
+ip4_address_normalize (ip4_address_t * ip4, u8 preflen)
+{
+  ASSERT (preflen <= 32);
+  if (preflen == 0)
+    ip4->data_u32 = 0;
+  else
+    ip4->data_u32 &= clib_net_to_host_u32 (0xffffffff << (32 - preflen));
+}
+
+void
+ip6_address_normalize (ip6_address_t * ip6, u8 preflen)
+{
+  ASSERT (preflen <= 128);
+  if (preflen == 0)
+    {
+      ip6->as_u64[0] = 0;
+      ip6->as_u64[1] = 0;
+    }
+  else if (preflen <= 64)
+    {
+      ip6->as_u64[0] &=
+       clib_host_to_net_u64 (0xffffffffffffffffL << (64 - preflen));
+      ip6->as_u64[1] = 0;
+    }
+  else
+    ip6->as_u64[1] &=
+      clib_host_to_net_u64 (0xffffffffffffffffL << (128 - preflen));
+}
+
+void
+ip4_preflen_to_mask (u8 pref_len, ip4_address_t * ip)
+{
+  if (pref_len == 0)
+    ip->as_u32 = 0;
+  else
+    ip->as_u32 = clib_host_to_net_u32 (~((1 << (32 - pref_len)) - 1));
+}
+
+u32
+ip4_mask_to_preflen (ip4_address_t * mask)
+{
+  if (mask->as_u32 == 0)
+    return 0;
+  return (32 - log2_first_set (clib_net_to_host_u32 (mask->as_u32)));
+}
+
+void
+ip4_prefix_max_address_host_order (ip4_address_t * ip, u8 plen,
+                                  ip4_address_t * res)
+{
+  u32 not_mask;
+  not_mask = (1 << (32 - plen)) - 1;
+  res->as_u32 = clib_net_to_host_u32 (ip->as_u32) + not_mask;
+}
+
+void
+ip6_preflen_to_mask (u8 pref_len, ip6_address_t * mask)
+{
+  if (pref_len == 0)
+    {
+      mask->as_u64[0] = 0;
+      mask->as_u64[1] = 0;
+    }
+  else if (pref_len <= 64)
+    {
+      mask->as_u64[0] =
+       clib_host_to_net_u64 (0xffffffffffffffffL << (64 - pref_len));
+      mask->as_u64[1] = 0;
+    }
+  else
+    {
+      mask->as_u64[1] =
+       clib_host_to_net_u64 (0xffffffffffffffffL << (128 - pref_len));
+    }
+}
+
+void
+ip6_prefix_max_address_host_order (ip6_address_t * ip, u8 plen,
+                                  ip6_address_t * res)
+{
+  u64 not_mask;
+  if (plen == 0)
+    {
+      res->as_u64[0] = 0xffffffffffffffffL;
+      res->as_u64[1] = 0xffffffffffffffffL;
+    }
+  else if (plen <= 64)
+    {
+      not_mask = ((u64) 1 << (64 - plen)) - 1;
+      res->as_u64[0] = clib_net_to_host_u64 (ip->as_u64[0]) + not_mask;
+      res->as_u64[1] = 0xffffffffffffffffL;
+    }
+  else
+    {
+      not_mask = ((u64) 1 << (128 - plen)) - 1;
+      res->as_u64[1] = clib_net_to_host_u64 (ip->as_u64[1]) + not_mask;
+    }
+}
+
+u32
+ip6_mask_to_preflen (ip6_address_t * mask)
+{
+  u8 first1, first0;
+  if (mask->as_u64[0] == 0 && mask->as_u64[1] == 0)
+    return 0;
+  first1 = log2_first_set (clib_net_to_host_u64 (mask->as_u64[1]));
+  first0 = log2_first_set (clib_net_to_host_u64 (mask->as_u64[0]));
+
+  if (first1 != 0)
+    return 128 - first1;
+  else
+    return 64 - first0;
+}
+
+u8 *
+format_ip_address_family (u8 * s, va_list * args)
+{
+  ip_address_family_t af = va_arg (*args, ip_address_family_t);
+
+  switch (af)
+    {
+    case AF_IP4:
+      return (format (s, "ip4"));
+    case AF_IP6:
+      return (format (s, "ip6"));
+    }
+
+  return (format (s, "unknown"));
+}
+
+u8 *
+format_ip_dscp (u8 * s, va_list * va)
+{
+  ip_dscp_t dscp = va_arg (*va, u32);  // int promotion of u8
+
+  switch (dscp)
+    {
+#define _(n,v)                                                  \
+    case IP_DSCP_##v:                                           \
+      return (format (s, "%s", #v));
+      foreach_ip_dscp
+#undef _
+    }
+
+  return (format (s, "unknon"));
+}
+
 /*
  * fd.io coding-style-patch-verification: ON
  *