From a0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 4 May 2024 16:18:53 +0200 Subject: Adding upstream version 6.1.0. Signed-off-by: Daniel Baumann --- tc/p_tcp.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 tc/p_tcp.c (limited to 'tc/p_tcp.c') diff --git a/tc/p_tcp.c b/tc/p_tcp.c new file mode 100644 index 0000000..ec7b08a --- /dev/null +++ b/tc/p_tcp.c @@ -0,0 +1,72 @@ +/* + * m_pedit_tcp.c packet editor: TCP header + * + * This program is free software; you can distribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Authors: J Hadi Salim (hadi@cyberus.ca) + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "utils.h" +#include "tc_util.h" +#include "m_pedit.h" + +static int +parse_tcp(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_TCP; + + 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; + } + + if (strcmp(*argv, "flags") == 0) { + NEXT_ARG(); + tkey->off = 13; + res = parse_cmd(&argc, &argv, 1, TU32, RU8, sel, tkey, 0); + goto done; + } + + return -1; + +done: + *argc_p = argc; + *argv_p = argv; + return res; +} +struct m_pedit_util p_pedit_tcp = { + .id = "tcp", + .parse_peopt = parse_tcp, +}; -- cgit v1.2.3