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Code Issues Releases Activity

Restore "nat global" support.

Browse Source 
Now zero value of arg1 used to specify "tablearg", use the old "tablearg"
value for "nat global". Introduce new macro IP_FW_NAT44_GLOBAL to replace
hardcoded magic number to specify "nat global". Also replace 65535 magic
number with corresponding macro. Fix typo in comments.

PR:		211256
Tested by:	Victor Chernov
MFC after:	3 days
This commit is contained in:
Andrey V. Elsukov 2016-08-11 10:10:10 +00:00
parent 5004817335
commit d6eb9b0249
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=303955
4 changed files with 19 additions and 12 deletions
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4
sbin/ipfw/ipfw2.c
View File

@ -1583,7 +1583,7 @@ show_static_rule(struct cmdline_opts *co, struct format_opts *fo,
break;
case O_NAT:
if (cmd->arg1 != 0)
if (cmd->arg1 != IP_FW_NAT44_GLOBAL)
bprint_uint_arg(bp, "nat ", cmd->arg1);
else
bprintf(bp, "nat global");
@ -3776,7 +3776,7 @@ compile_rule(char *av[], uint32_t *rbuf, int *rbufsize, struct tidx *tstate)
action->len = F_INSN_SIZE(ipfw_insn_nat);
CHECK_ACTLEN;
if (*av != NULL && _substrcmp(*av, "global") == 0) {
action->arg1 = 0;
action->arg1 = IP_FW_NAT44_GLOBAL;
av++;
break;
} else

1
sys/netinet/ip_fw.h
View File

@ -60,6 +60,7 @@
#define IPFW_ARG_MAX 65534
#define IP_FW_TABLEARG 65535 /* Compat value for old clients */
#define IP_FW_TARG 0 /* Current tablearg value */
#define IP_FW_NAT44_GLOBAL 65535 /* arg1 value for "nat global" */
/*
* Number of entries in the call stack of the call/return commands.

2
sys/netpfil/ipfw/ip_fw2.c
View File

@ -2508,7 +2508,7 @@ do { \
set_match(args, f_pos, chain);
/* Check if this is 'global' nat rule */
if (cmd->arg1 == 0) {
if (cmd->arg1 == IP_FW_NAT44_GLOBAL) {
retval = ipfw_nat_ptr(args, NULL, m);
break;
}

24
sys/netpfil/ipfw/ip_fw_sockopt.c
View File

@ -530,9 +530,11 @@ import_rule0(struct rule_check_info *ci)
/*
* Alter opcodes:
* 1) convert tablearg value from 65335 to 0
* 2) Add high bit to O_SETFIB/O_SETDSCP values (to make room for targ).
* 1) convert tablearg value from 65535 to 0
* 2) Add high bit to O_SETFIB/O_SETDSCP values (to make room
* for targ).
* 3) convert table number in iface opcodes to u16
* 4) convert old `nat global` into new 65535
*/
l = krule->cmd_len;
cmd = krule->cmd;
@ -554,19 +556,21 @@ import_rule0(struct rule_check_info *ci)
case O_NETGRAPH:
case O_NGTEE:
case O_NAT:
if (cmd->arg1 == 65535)
if (cmd->arg1 == IP_FW_TABLEARG)
cmd->arg1 = IP_FW_TARG;
else if (cmd->arg1 == 0)
cmd->arg1 = IP_FW_NAT44_GLOBAL;
break;
case O_SETFIB:
case O_SETDSCP:
if (cmd->arg1 == 65535)
if (cmd->arg1 == IP_FW_TABLEARG)
cmd->arg1 = IP_FW_TARG;
else
cmd->arg1 |= 0x8000;
break;
case O_LIMIT:
lcmd = (ipfw_insn_limit *)cmd;
if (lcmd->conn_limit == 65535)
if (lcmd->conn_limit == IP_FW_TABLEARG)
lcmd->conn_limit = IP_FW_TARG;
break;
/* Interface tables */
@ -612,7 +616,7 @@ export_rule0(struct ip_fw *krule, struct ip_fw_rule0 *urule, int len)
/*
* Alter opcodes:
* 1) convert tablearg value from 0 to 65335
* 1) convert tablearg value from 0 to 65535
* 2) Remove highest bit from O_SETFIB/O_SETDSCP values.
* 3) convert table number in iface opcodes to int
*/
@ -637,19 +641,21 @@ export_rule0(struct ip_fw *krule, struct ip_fw_rule0 *urule, int len)
case O_NGTEE:
case O_NAT:
if (cmd->arg1 == IP_FW_TARG)
cmd->arg1 = 65535;
cmd->arg1 = IP_FW_TABLEARG;
else if (cmd->arg1 == IP_FW_NAT44_GLOBAL)
cmd->arg1 = 0;
break;
case O_SETFIB:
case O_SETDSCP:
if (cmd->arg1 == IP_FW_TARG)
cmd->arg1 = 65535;
cmd->arg1 = IP_FW_TABLEARG;
else
cmd->arg1 &= ~0x8000;
break;
case O_LIMIT:
lcmd = (ipfw_insn_limit *)cmd;
if (lcmd->conn_limit == IP_FW_TARG)
lcmd->conn_limit = 65535;
lcmd->conn_limit = IP_FW_TABLEARG;
break;
/* Interface tables */
case O_XMIT: