lib/tc: Support matching on ip tos

[ovs.git] / lib / netlink.h

diff --git a/lib/netlink.h b/lib/netlink.h
index a5c129ab296836aee2e9ecd9e48916301a1b26a0..44b8e4d1a9eb5ba030b0baf2471ee929ba93fc52 100644 (file)
--- a/lib/netlink.h
+++ b/lib/netlink.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009, 2010, 2011 Nicira, Inc.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2013, 2015 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -31,6 +31,8 @@
  * Linux-specific definitions for Netlink sockets, see netlink-socket.h.
  */
 
+#include <sys/types.h>
+#include <netinet/in.h>
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
@@ -59,19 +61,29 @@ void *nl_msg_push_uninit(struct ofpbuf *, size_t);
 
 /* Appending attributes. */
 void *nl_msg_put_unspec_uninit(struct ofpbuf *, uint16_t type, size_t);
+void *nl_msg_put_unspec_zero(struct ofpbuf *, uint16_t type, size_t);
 void nl_msg_put_unspec(struct ofpbuf *, uint16_t type, const void *, size_t);
 void nl_msg_put_flag(struct ofpbuf *, uint16_t type);
 void nl_msg_put_u8(struct ofpbuf *, uint16_t type, uint8_t value);
 void nl_msg_put_u16(struct ofpbuf *, uint16_t type, uint16_t value);
 void nl_msg_put_u32(struct ofpbuf *, uint16_t type, uint32_t value);
 void nl_msg_put_u64(struct ofpbuf *, uint16_t type, uint64_t value);
+void nl_msg_put_u128(struct ofpbuf *, uint16_t type, ovs_u128 value);
 void nl_msg_put_be16(struct ofpbuf *, uint16_t type, ovs_be16 value);
 void nl_msg_put_be32(struct ofpbuf *, uint16_t type, ovs_be32 value);
 void nl_msg_put_be64(struct ofpbuf *, uint16_t type, ovs_be64 value);
+void nl_msg_put_be128(struct ofpbuf *, uint16_t type, ovs_be128 value);
+void nl_msg_put_in6_addr(struct ofpbuf *msg, uint16_t type,
+                         const struct in6_addr *value);
+void nl_msg_put_odp_port(struct ofpbuf *, uint16_t type, odp_port_t value);
+void nl_msg_put_string__(struct ofpbuf *, uint16_t type, const char *value,
+                         size_t len);
 void nl_msg_put_string(struct ofpbuf *, uint16_t type, const char *value);
 
 size_t nl_msg_start_nested(struct ofpbuf *, uint16_t type);
 void nl_msg_end_nested(struct ofpbuf *, size_t offset);
+void nl_msg_cancel_nested(struct ofpbuf *, size_t offset);
+bool nl_msg_end_non_empty_nested(struct ofpbuf *, size_t offset);
 void nl_msg_put_nested(struct ofpbuf *, uint16_t type,
                        const void *data, size_t size);
 
@@ -83,25 +95,39 @@ void nl_msg_push_u8(struct ofpbuf *, uint16_t type, uint8_t value);
 void nl_msg_push_u16(struct ofpbuf *, uint16_t type, uint16_t value);
 void nl_msg_push_u32(struct ofpbuf *, uint16_t type, uint32_t value);
 void nl_msg_push_u64(struct ofpbuf *, uint16_t type, uint64_t value);
+void nl_msg_push_u128(struct ofpbuf *, uint16_t type, ovs_u128 value);
 void nl_msg_push_be16(struct ofpbuf *, uint16_t type, ovs_be16 value);
 void nl_msg_push_be32(struct ofpbuf *, uint16_t type, ovs_be32 value);
 void nl_msg_push_be64(struct ofpbuf *, uint16_t type, ovs_be64 value);
+void nl_msg_push_be128(struct ofpbuf *, uint16_t type, ovs_be128 value);
 void nl_msg_push_string(struct ofpbuf *, uint16_t type, const char *value);
 
 /* Separating buffers into individual messages. */
 struct nlmsghdr *nl_msg_next(struct ofpbuf *buffer, struct ofpbuf *msg);
 
 /* Sizes of various attribute types, in bytes, including the attribute header
- * and padding. */
+ * and padding.
+ *
+ * A minimum-size attribute is 4 bytes long: 4 bytes of header, no bytes of
+ * payload, no padding.
+ *
+ * A maximum-size attribute is 65536 bytes long: 4 bytes of header, 65531 bytes
+ * of payload, 1 byte of padding.  (Thus, NL_ATTR_SIZE() of a maximum length
+ * attribute payload does not fit in 16 bits.) */
 #define NL_ATTR_SIZE(PAYLOAD_SIZE) (NLA_HDRLEN + NLA_ALIGN(PAYLOAD_SIZE))
 #define NL_A_U8_SIZE   NL_ATTR_SIZE(sizeof(uint8_t))
 #define NL_A_U16_SIZE  NL_ATTR_SIZE(sizeof(uint16_t))
 #define NL_A_U32_SIZE  NL_ATTR_SIZE(sizeof(uint32_t))
 #define NL_A_U64_SIZE  NL_ATTR_SIZE(sizeof(uint64_t))
+#define NL_A_U128_SIZE  NL_ATTR_SIZE(sizeof(ovs_u128))
 #define NL_A_BE16_SIZE NL_ATTR_SIZE(sizeof(ovs_be16))
 #define NL_A_BE32_SIZE NL_ATTR_SIZE(sizeof(ovs_be32))
 #define NL_A_BE64_SIZE NL_ATTR_SIZE(sizeof(ovs_be64))
+#define NL_A_BE128_SIZE NL_ATTR_SIZE(sizeof(ovs_be128))
 #define NL_A_FLAG_SIZE NL_ATTR_SIZE(0)
+#define NL_A_IPV6_SIZE NL_ATTR_SIZE(sizeof(struct in6_addr))
+
+bool nl_attr_oversized(size_t payload_size);
 \f
 /* Netlink attribute types. */
 enum nl_attr_type
@@ -115,8 +141,11 @@ enum nl_attr_type
     NL_A_BE32 = NL_A_U32,
     NL_A_U64,
     NL_A_BE64 = NL_A_U64,
+    NL_A_U128,
+    NL_A_BE128 = NL_A_U128,
     NL_A_STRING,
     NL_A_FLAG,
+    NL_A_IPV6,
     NL_A_NESTED,
     N_NL_ATTR_TYPES
 };
@@ -125,7 +154,8 @@ enum nl_attr_type
 static inline struct nlattr *
 nl_attr_next(const struct nlattr *nla)
 {
-    return (void *) ((uint8_t *) nla + NLA_ALIGN(nla->nla_len));
+    return ALIGNED_CAST(struct nlattr *,
+                        ((uint8_t *) nla + NLA_ALIGN(nla->nla_len)));
 }
 
 static inline bool
@@ -133,14 +163,22 @@ nl_attr_is_valid(const struct nlattr *nla, size_t maxlen)
 {
     return (maxlen >= sizeof *nla
             && nla->nla_len >= sizeof *nla
-            && NLA_ALIGN(nla->nla_len) <= maxlen);
+            && nla->nla_len <= maxlen);
+}
+
+static inline size_t
+nl_attr_len_pad(const struct nlattr *nla, size_t maxlen)
+{
+    size_t len = NLA_ALIGN(nla->nla_len);
+
+    return len <= maxlen ? len : nla->nla_len;
 }
 
 /* This macro is careful to check for attributes with bad lengths. */
 #define NL_ATTR_FOR_EACH(ITER, LEFT, ATTRS, ATTRS_LEN)                  \
     for ((ITER) = (ATTRS), (LEFT) = (ATTRS_LEN);                        \
          nl_attr_is_valid(ITER, LEFT);                                  \
-         (LEFT) -= NLA_ALIGN((ITER)->nla_len), (ITER) = nl_attr_next(ITER))
+         (LEFT) -= nl_attr_len_pad(ITER, LEFT), (ITER) = nl_attr_next(ITER))
 
 
 /* This macro does not check for attributes with bad lengths.  It should only
@@ -149,7 +187,7 @@ nl_attr_is_valid(const struct nlattr *nla, size_t maxlen)
 #define NL_ATTR_FOR_EACH_UNSAFE(ITER, LEFT, ATTRS, ATTRS_LEN)           \
     for ((ITER) = (ATTRS), (LEFT) = (ATTRS_LEN);                        \
          (LEFT) > 0;                                                    \
-         (LEFT) -= NLA_ALIGN((ITER)->nla_len), (ITER) = nl_attr_next(ITER))
+         (LEFT) -= nl_attr_len_pad(ITER, LEFT), (ITER) = nl_attr_next(ITER))
 
 /* These variants are convenient for iterating nested attributes. */
 #define NL_NESTED_FOR_EACH(ITER, LEFT, A)                               \
@@ -167,9 +205,13 @@ uint8_t nl_attr_get_u8(const struct nlattr *);
 uint16_t nl_attr_get_u16(const struct nlattr *);
 uint32_t nl_attr_get_u32(const struct nlattr *);
 uint64_t nl_attr_get_u64(const struct nlattr *);
+ovs_u128 nl_attr_get_u128(const struct nlattr *);
 ovs_be16 nl_attr_get_be16(const struct nlattr *);
 ovs_be32 nl_attr_get_be32(const struct nlattr *);
 ovs_be64 nl_attr_get_be64(const struct nlattr *);
+ovs_be128 nl_attr_get_be128(const struct nlattr *);
+struct in6_addr nl_attr_get_in6_addr(const struct nlattr *nla);
+odp_port_t nl_attr_get_odp_port(const struct nlattr *);
 const char *nl_attr_get_string(const struct nlattr *);
 void nl_attr_get_nested(const struct nlattr *, struct ofpbuf *);