The database documentation says:
If an interface does not support a given statistic, then that pair is
omitted.
but in fact the implementation included the key-value pair for an
unsupported statistic with -1 as the value.
Found by inspection.
Signed-off-by: Ben Pfaff <b...@nicira.com>
---
vswitchd/bridge.c | 25 +++++++++++++++----------
1 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/vswitchd/bridge.c b/vswitchd/bridge.c
index 19a8f48..bead43e 100644
--- a/vswitchd/bridge.c
+++ b/vswitchd/bridge.c
@@ -1898,11 +1898,12 @@ iface_refresh_stats(struct iface *iface)
IFACE_STAT(rx_crc_errors, "rx_crc_err") \
IFACE_STAT(collisions, "collisions")
-#define IFACE_STAT(MEMBER, NAME) NAME,
- static char *keys[] = { IFACE_STATS };
+#define IFACE_STAT(MEMBER, NAME) +1
+ enum { N_IFACE_STATS = IFACE_STATS };
#undef IFACE_STAT
- int64_t values[ARRAY_SIZE(keys)];
- int i;
+ int64_t values[N_IFACE_STATS];
+ char *keys[N_IFACE_STATS];
+ int n;
struct netdev_stats stats;
@@ -1914,15 +1915,19 @@ iface_refresh_stats(struct iface *iface)
* all-1s, and we will deal with that correctly below. */
netdev_get_stats(iface->netdev, &stats);
- /* Copy statistics into values[] array. */
- i = 0;
-#define IFACE_STAT(MEMBER, NAME) values[i++] = stats.MEMBER;
+ /* Copy statistics into keys[] and values[]. */
+ n = 0;
+#define IFACE_STAT(MEMBER, NAME) \
+ if (stats.MEMBER != UINT64_MAX) { \
+ keys[n] = NAME; \
+ values[n] = stats.MEMBER; \
+ n++; \
+ }
IFACE_STATS;
#undef IFACE_STAT
- ovs_assert(i == ARRAY_SIZE(keys));
+ ovs_assert(n <= N_IFACE_STATS);
- ovsrec_interface_set_statistics(iface->cfg, keys, values,
- ARRAY_SIZE(keys));
+ ovsrec_interface_set_statistics(iface->cfg, keys, values, n);
#undef IFACE_STATS
}
--
1.7.2.5
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