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authorPhil Sutter <phil@nwl.cc>2020-10-30 12:42:57 +0100
committerPhil Sutter <phil@nwl.cc>2020-12-03 00:27:57 +0100
commit8bd4b4f79b5de483353a8c0d0962e71934b7bdd2 (patch)
treeba5d05c78d0ee9a45a0711fb386decf63342c119 /iptables/xshared.h
parent44457c0805905ea22b4ecf9156648e774dd29155 (diff)
xshared: Merge some command option-related code
Add OPT_FRAGMENT define into the enum of other OPT_* defines at the right position and adjust the arptables-specific ones that follow accordingly. Appropriately adjust inverse_for_options array in xtables-arp.c. Extend optflags from iptables.c by the arptables values for the sake of completeness, then move it to xshared.h along with NUMBER_OF_OPT definition. As a side-effect, this fixes for wrong ordering of entries in arptables' 'optflags' copy. Add arptables-specific bits to commands_v_options table (the speicific options are matches on ARP header fields, just treat them like '-s' option. This is also just a cosmetic change, arptables doesn't have a generic_opt_check() implementation and hence doesn't use such a table. With things potentially ready for common use, move commands_v_options table along with generic_opt_check() and opt2char() into xshared.c and drop the local (identical) implementations from iptables.c, ip6tables.c xtables.c and xtables-arp.c. While doing so, fix ordering of entries in that table: the row for CMD_ZERO_NUM was in the wrong position. Since all moved rows though are identical, this had no effect in practice. Fixes: d960a991350ca ("xtables-arp: Integrate OPT_* defines into xshared.h") Fixes: 384958620abab ("use nf_tables and nf_tables compatibility interface") Signed-off-by: Phil Sutter <phil@nwl.cc>
Diffstat (limited to 'iptables/xshared.h')
-rw-r--r--iptables/xshared.h20
1 files changed, 14 insertions, 6 deletions
diff --git a/iptables/xshared.h b/iptables/xshared.h
index c41bd054..9159b2b1 100644
--- a/iptables/xshared.h
+++ b/iptables/xshared.h
@@ -30,15 +30,20 @@ enum {
OPT_VIANAMEOUT = 1 << 8,
OPT_LINENUMBERS = 1 << 9,
OPT_COUNTERS = 1 << 10,
+ OPT_FRAGMENT = 1 << 11,
/* below are for arptables only */
- OPT_S_MAC = 1 << 11,
- OPT_D_MAC = 1 << 12,
- OPT_H_LENGTH = 1 << 13,
- OPT_OPCODE = 1 << 14,
- OPT_H_TYPE = 1 << 15,
- OPT_P_TYPE = 1 << 16,
+ OPT_S_MAC = 1 << 12,
+ OPT_D_MAC = 1 << 13,
+ OPT_H_LENGTH = 1 << 14,
+ OPT_OPCODE = 1 << 15,
+ OPT_H_TYPE = 1 << 16,
+ OPT_P_TYPE = 1 << 17,
};
+#define NUMBER_OF_OPT ARRAY_SIZE(optflags)
+static const char optflags[]
+= { 'n', 's', 'd', 'p', 'j', 'v', 'x', 'i', 'o', '0', 'c', 'f', 2, 3, 'l', 4, 5, 6 };
+
enum {
CMD_NONE = 0,
CMD_INSERT = 1 << 0,
@@ -216,4 +221,7 @@ void add_command(unsigned int *cmd, const int newcmd,
const int othercmds, int invert);
int parse_rulenumber(const char *rule);
+void generic_opt_check(int command, int options);
+char opt2char(int option);
+
#endif /* IPTABLES_XSHARED_H */