TCA_FLOWER_UNSPEC, TCA_FLOWER_UNSPEC, n);
}
-static int flower_parse_arp_op(char *str, __be16 eth_type,
- int op_type, int mask_type,
- struct nlmsghdr *n)
+static int flower_parse_u8(char *str, int value_type, int mask_type,
+ int (*value_from_name)(const char *str,
+ __u8 *value),
+ bool (*value_validate)(__u8 value),
+ struct nlmsghdr *n)
{
char *slash;
int ret, err = -1;
- uint8_t value, mask;
+ __u8 value, mask;
slash = strchr(str, '/');
if (slash)
*slash = '\0';
- if (!flower_eth_type_arp(eth_type))
- goto err;
-
- if (!strcmp(str, "request")) {
- value = ARPOP_REQUEST;
- } else if (!strcmp(str, "reply")) {
- value = ARPOP_REPLY;
- } else {
+ ret = value_from_name ? value_from_name(str, &value) : -1;
+ if (ret < 0) {
ret = get_u8(&value, str, 10);
if (ret)
goto err;
- if (value && value != ARPOP_REQUEST && value != ARPOP_REPLY)
- goto err;
}
+ if (value_validate && !value_validate(value))
+ goto err;
+
if (slash) {
ret = get_u8(&mask, slash + 1, 10);
if (ret)
mask = UINT8_MAX;
}
- addattr8(n, MAX_MSG, op_type, value);
+ addattr8(n, MAX_MSG, value_type, value);
addattr8(n, MAX_MSG, mask_type, mask);
err = 0;
return err;
}
+static int flower_arp_op_from_name(const char *name, __u8 *op)
+{
+ if (!strcmp(name, "request"))
+ *op = ARPOP_REQUEST;
+ else if (!strcmp(name, "reply"))
+ *op = ARPOP_REPLY;
+ else
+ return -1;
+
+ return 0;
+}
+
+static bool flow_arp_op_validate(__u8 op)
+{
+ return !op || op == ARPOP_REQUEST || op == ARPOP_REPLY;
+}
+
+static int flower_parse_arp_op(char *str, __be16 eth_type,
+ int op_type, int mask_type,
+ struct nlmsghdr *n)
+{
+ if (!flower_eth_type_arp(eth_type))
+ return -1;
+
+ return flower_parse_u8(str, op_type, mask_type, flower_arp_op_from_name,
+ flow_arp_op_validate, n);
+}
+
static int flower_icmp_attr_type(__be16 eth_type, __u8 ip_proto,
enum flower_icmp_field field)
{