These types will be used by the following patches to ensure a consistent
wire format for 128-bit connection tracking labels. Common functions for
comparison, endian translation, etc. are provided.
Signed-off-by: Joe Stringer <joestrin...@nicira.com>
---
v4: Reorder u128 elements rather than swapping in {ntoh,hton}128().
Add OVS_*128_MAX constants
Add is_ones() function.
---
include/openvswitch/types.h | 14 ++++++++++++++
lib/byte-order.h | 14 ++++++++++++++
lib/meta-flow.h | 1 +
lib/util.h | 30 ++++++++++++++++++++++++++++++
4 files changed, 59 insertions(+)
diff --git a/include/openvswitch/types.h b/include/openvswitch/types.h
index c138b9c..64d9012 100644
--- a/include/openvswitch/types.h
+++ b/include/openvswitch/types.h
@@ -84,10 +84,24 @@ typedef struct {
typedef union {
uint32_t u32[4];
struct {
+#ifdef WORDS_BIGENDIAN
+ uint64_t hi, lo;
+#else
uint64_t lo, hi;
+#endif
} u64;
} ovs_u128;
+typedef union {
+ ovs_be32 be32[4];
+ struct {
+ ovs_be64 hi, lo;
+ } be64;
+} ovs_be128;
+
+#define OVS_U128_MAX (ovs_u128) { .u64 = { UINT64_MAX, UINT64_MAX } }
+#define OVS_BE128_MAX (ovs_be128) { .be64 = { OVS_BE64_MAX, OVS_BE64_MAX } }
+
/* A 64-bit value, in network byte order, that is only aligned on a 32-bit
* boundary. */
typedef struct {
diff --git a/lib/byte-order.h b/lib/byte-order.h
index 544f46f..3f60698 100644
--- a/lib/byte-order.h
+++ b/lib/byte-order.h
@@ -42,6 +42,20 @@ ovs_be64 htonll(uint64_t);
uint64_t ntohll(ovs_be64);
#endif
+static inline void
+hton128(const ovs_u128 *src, ovs_be128 *dst)
+{
+ dst->be64.hi = htonll(src->u64.hi);
+ dst->be64.lo = htonll(src->u64.lo);
+}
+
+static inline void
+ntoh128(const ovs_be128 *src, ovs_u128 *dst)
+{
+ dst->u64.hi = ntohll(src->be64.hi);
+ dst->u64.lo = ntohll(src->be64.lo);
+}
+
static inline uint32_t
uint32_byteswap(uint32_t crc) {
return (((crc & 0x000000ff) << 24) |
diff --git a/lib/meta-flow.h b/lib/meta-flow.h
index 02272ef..f9379f9 100644
--- a/lib/meta-flow.h
+++ b/lib/meta-flow.h
@@ -1742,6 +1742,7 @@ union mf_value {
uint8_t tun_metadata[128];
struct in6_addr ipv6;
struct eth_addr mac;
+ ovs_be128 be128;
ovs_be64 be64;
ovs_be32 be32;
ovs_be16 be16;
diff --git a/lib/util.h b/lib/util.h
index 4186d49..340ef65 100644
--- a/lib/util.h
+++ b/lib/util.h
@@ -563,6 +563,36 @@ ovs_u128_equals(const ovs_u128 *a, const ovs_u128 *b)
return (a->u64.hi == b->u64.hi) && (a->u64.lo == b->u64.lo);
}
+/* Returns true if 'val' is 0. */
+static inline bool
+ovs_u128_is_zero(const ovs_u128 *val)
+{
+ return !(val->u64.hi || val->u64.lo);
+}
+
+/* Returns true if 'val' is all ones. */
+static inline bool
+ovs_u128_is_ones(const ovs_u128 *val)
+{
+ ovs_u128 ones = OVS_U128_MAX;
+
+ return ovs_u128_equals(val, &ones);
+}
+
+/* Returns non-zero if the parameters have equal value. */
+static inline int
+ovs_be128_equals(const ovs_be128 *a, const ovs_be128 *b)
+{
+ return (a->be64.hi == b->be64.hi) && (a->be64.lo == b->be64.lo);
+}
+
+/* Returns true if 'val' is 0. */
+static inline bool
+ovs_be128_is_zero(const ovs_be128 *val)
+{
+ return !(val->be64.hi || val->be64.lo);
+}
+
void xsleep(unsigned int seconds);
#ifdef _WIN32
--
2.1.4
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