tc/m_pedit.h

   1 /*
   2  * m_pedit.h            generic packet editor actions module
   3  *
   4  *              This program is free software; you can distribute it and/or
   5  *              modify it under the terms of the GNU General Public License
   6  *              as published by the Free Software Foundation; either version
   7  *              2 of the License, or (at your option) any later version.
   8  *
   9  * Authors:  J Hadi Salim (hadi@cyberus.ca)
  10  *
  11  */
  12
  13 #ifndef _ACT_PEDIT_H_
  14 #define _ACT_PEDIT_H_ 1
  15
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <unistd.h>
  19 #include <syslog.h>
  20 #include <fcntl.h>
  21 #include <sys/socket.h>
  22 #include <netinet/in.h>
  23 #include <arpa/inet.h>
  24 #include <string.h>
  25 #include "utils.h"
  26 #include "tc_util.h"
  27 #include <linux/tc_act/tc_pedit.h>
  28
  29 #define MAX_OFFS 128
  30
  31 #define TIPV4 1
  32 #define TIPV6 2
  33 #define TINT 3
  34 #define TU32 4
  35 #define TMAC 5
  36
  37 #define RU32 0xFFFFFFFF
  38 #define RU16 0xFFFF
  39 #define RU8 0xFF
  40
  41 #define PEDITKINDSIZ 16
  42
  43 struct m_pedit_key {
  44         __u32           mask;  /* AND */
  45         __u32           val;   /*XOR */
  46         __u32           off;  /*offset */
  47         __u32           at;
  48         __u32           offmask;
  49         __u32           shift;
  50
  51         enum pedit_header_type htype;
  52         enum pedit_cmd cmd;
  53 };
  54
  55 struct m_pedit_key_ex {
  56         enum pedit_header_type htype;
  57         enum pedit_cmd cmd;
  58 };
  59
  60 struct m_pedit_sel {
  61         struct tc_pedit_sel sel;
  62         struct tc_pedit_key keys[MAX_OFFS];
  63         struct m_pedit_key_ex keys_ex[MAX_OFFS];
  64         bool extended;
  65 };
  66
  67 struct m_pedit_util {
  68         struct m_pedit_util *next;
  69         char    id[PEDITKINDSIZ];
  70         int     (*parse_peopt)(int *argc_p, char ***argv_p,
  71                                struct m_pedit_sel *sel,
  72                                struct m_pedit_key *tkey);
  73 };
  74
  75 extern int pack_key(struct m_pedit_sel *sel, struct m_pedit_key *tkey);
  76 extern int pack_key32(__u32 retain, struct m_pedit_sel *sel,
  77                       struct m_pedit_key *tkey);
  78 extern int pack_key16(__u32 retain, struct m_pedit_sel *sel,
  79                       struct m_pedit_key *tkey);
  80 extern int pack_key8(__u32 retain, struct m_pedit_sel *sel,
  81                      struct m_pedit_key *tkey);
  82 extern int parse_val(int *argc_p, char ***argv_p, __u32 *val, int type);
  83 extern int parse_cmd(int *argc_p, char ***argv_p, __u32 len, int type,
  84                      __u32 retain,
  85                      struct m_pedit_sel *sel, struct m_pedit_key *tkey);
  86 extern int parse_offset(int *argc_p, char ***argv_p,
  87                         struct m_pedit_sel *sel, struct m_pedit_key *tkey);
  88 int parse_pedit(struct action_util *a, int *argc_p, char ***argv_p,
  89                 int tca_id, struct nlmsghdr *n);
  90 extern int print_pedit(struct action_util *au, FILE *f, struct rtattr *arg);
  91 extern int pedit_print_xstats(struct action_util *au, FILE *f,
  92                               struct rtattr *xstats);
  93
  94 #endif