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-rw-r--r--tc/m_ematch.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/tc/m_ematch.h b/tc/m_ematch.h
new file mode 100644
index 0000000..c4443ee
--- /dev/null
+++ b/tc/m_ematch.h
@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __TC_EMATCH_H_
+#define __TC_EMATCH_H_
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+#include "utils.h"
+#include "tc_util.h"
+
+#define EMATCHKINDSIZ 16
+
+struct bstr {
+ char *data;
+ unsigned int len;
+ int quoted;
+ struct bstr *next;
+};
+
+struct bstr *bstr_alloc(const char *text);
+
+static inline struct bstr *bstr_new(char *data, unsigned int len)
+{
+ struct bstr *b = calloc(1, sizeof(*b));
+
+ if (b == NULL)
+ return NULL;
+
+ b->data = data;
+ b->len = len;
+
+ return b;
+}
+
+static inline int bstrcmp(const struct bstr *b, const char *text)
+{
+ int len = strlen(text);
+ int d = b->len - len;
+
+ if (d == 0)
+ return strncmp(b->data, text, len);
+
+ return d;
+}
+
+static inline struct bstr *bstr_next(struct bstr *b)
+{
+ return b->next;
+}
+
+unsigned long bstrtoul(const struct bstr *b);
+
+struct ematch {
+ struct bstr *args;
+ int index;
+ int inverted;
+ int relation;
+ int child_ref;
+ struct ematch *child;
+ struct ematch *next;
+};
+
+static inline struct ematch *new_ematch(struct bstr *args, int inverted)
+{
+ struct ematch *e = calloc(1, sizeof(*e));
+
+ if (e == NULL)
+ return NULL;
+
+ e->args = args;
+ e->inverted = inverted;
+
+ return e;
+}
+
+void print_ematch_tree(const struct ematch *tree);
+
+struct ematch_util {
+ char kind[EMATCHKINDSIZ];
+ int kind_num;
+ int (*parse_eopt)(struct nlmsghdr *, struct tcf_ematch_hdr *,
+ struct bstr *);
+ int (*parse_eopt_argv)(struct nlmsghdr *, struct tcf_ematch_hdr *,
+ int, char **);
+ int (*print_eopt)(FILE *, struct tcf_ematch_hdr *, void *, int);
+ void (*print_usage)(FILE *);
+ struct ematch_util *next;
+};
+
+static inline int parse_layer(const struct bstr *b)
+{
+ if (*((char *) b->data) == 'l')
+ return TCF_LAYER_LINK;
+ else if (*((char *) b->data) == 'n')
+ return TCF_LAYER_NETWORK;
+ else if (*((char *) b->data) == 't')
+ return TCF_LAYER_TRANSPORT;
+ else
+ return INT_MAX;
+}
+
+__attribute__((format(printf, 5, 6)))
+int em_parse_error(int err, struct bstr *args, struct bstr *carg,
+ struct ematch_util *, char *fmt, ...);
+int print_ematch(FILE *, const struct rtattr *);
+int parse_ematch(int *, char ***, int, struct nlmsghdr *);
+
+#endif