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authorDave Barach <dave@barachs.net>2017-10-17 13:13:42 -0400
committerDave Barach <dave@barachs.net>2017-10-17 15:19:22 -0400
commitb9f2cf0bff89ccf5c88072213a25efb65fb5516e (patch)
tree1f34f55543b5dfeaf5edd199ca7587121188534a /src/vnet/dns/dns.c
parenta3db0782d4c069733fa2e3ac1763efd4499b1de7 (diff)
VPP-1032: fix coverity warnings
Change-Id: Ic3a0c51e5408921051deaf2e50372d9654574b27 Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vnet/dns/dns.c')
-rw-r--r--src/vnet/dns/dns.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/src/vnet/dns/dns.c b/src/vnet/dns/dns.c
index 71ae7bb827c..9facb9b5640 100644
--- a/src/vnet/dns/dns.c
+++ b/src/vnet/dns/dns.c
@@ -690,6 +690,15 @@ delete_random_entry (dns_main_t * dm)
if (dm->is_enabled == 0)
return VNET_API_ERROR_NAME_RESOLUTION_NOT_ENABLED;
+ /*
+ * Silence spurious coverity warning. We know pool_elts >> 0, or
+ * we wouldn't be here...
+ */
+#ifdef __COVERITY__
+ if (pool_elts (dm->entries) == 0)
+ return VNET_API_ERROR_UNSPECIFIED;
+#endif
+
dns_cache_lock (dm);
limit = pool_elts (dm->entries);
start_index = random_u32 (&dm->random_seed) % limit;
@@ -936,8 +945,7 @@ vnet_dns_cname_indirection_nolock (dns_main_t * dm, u32 ep_index, u8 * reply)
pos += len;
len = *pos++;
}
- qp = (dns_query_t *) pos;
- pos += sizeof (*qp);
+ pos += sizeof (dns_query_t);
}
pos2 = pos;
/* expect a pointer chase here for a CNAME record */
@@ -1122,7 +1130,7 @@ vnet_dns_response_to_reply (u8 * response,
if ((pos[0] & 0xC0) == 0xC0)
{
curpos = pos + 2;
- break;
+ goto curpos_set;
}
pos += len;
len = *pos++;
@@ -1130,6 +1138,7 @@ vnet_dns_response_to_reply (u8 * response,
curpos = pos;
}
+ curpos_set:
rr = (dns_rr_t *) curpos;
switch (clib_net_to_host_u16 (rr->type))