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-rw-r--r--tc/p_udp.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/tc/p_udp.c b/tc/p_udp.c
new file mode 100644
index 0000000..d98224f
--- /dev/null
+++ b/tc/p_udp.c
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * m_pedit_udp.c packet editor: UDP header
+ *
+ * Authors: J Hadi Salim (hadi@cyberus.ca)
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include "utils.h"
+#include "tc_util.h"
+#include "m_pedit.h"
+
+static int
+parse_udp(int *argc_p, char ***argv_p,
+ struct m_pedit_sel *sel, struct m_pedit_key *tkey)
+{
+ int res = -1;
+ int argc = *argc_p;
+ char **argv = *argv_p;
+
+ if (argc < 2)
+ return -1;
+
+ if (!sel->extended)
+ return -1;
+
+ tkey->htype = TCA_PEDIT_KEY_EX_HDR_TYPE_UDP;
+
+ if (strcmp(*argv, "sport") == 0) {
+ NEXT_ARG();
+ tkey->off = 0;
+ res = parse_cmd(&argc, &argv, 2, TU32, RU16, sel, tkey, 0);
+ goto done;
+ }
+
+ if (strcmp(*argv, "dport") == 0) {
+ NEXT_ARG();
+ tkey->off = 2;
+ res = parse_cmd(&argc, &argv, 2, TU32, RU16, sel, tkey, 0);
+ goto done;
+ }
+
+ return -1;
+
+done:
+ *argc_p = argc;
+ *argv_p = argv;
+ return res;
+}
+
+struct m_pedit_util p_pedit_udp = {
+ .id = "udp",
+ .parse_peopt = parse_udp,
+};