If we can't translate an interface index back to a name
we just print the number.
This change allows using a number instead of an interface index to
make this symmetric.
If we can't find an interface with the given name check
if its a numeric string and then use it instead.
Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
---
src/meta.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/src/meta.c b/src/meta.c
index 87eafeead389..34f9ee8e36e2 100644
--- a/src/meta.c
+++ b/src/meta.c
@@ -11,6 +11,7 @@
*/
#include <errno.h>
+#include <limits.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
@@ -166,8 +167,18 @@ static struct error_record *ifindex_type_parse(const struct expr *sym,
int ifindex;
ifindex = nft_if_nametoindex(sym->identifier);
- if (ifindex == 0)
- return error(&sym->location, "Interface does not exist");
+ if (ifindex == 0) {
+ char *end;
+ long res;
+
+ errno = 0;
+ res = strtol(sym->identifier, &end, 10);
+
+ if (res < 0 || res > INT_MAX || *end || errno)
+ return error(&sym->location, "Interface does not exist");
+
+ ifindex = (int)res;
+ }
*res = constant_expr_alloc(&sym->location, sym->dtype,
BYTEORDER_HOST_ENDIAN,
--
2.7.3
--
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