iptables: add connmark savedscp support
iptables: connmark - add savedscp option Naive user space front end to xt_connmark 'savedscp' option. e.g. iptables -A QOS_MARK_eth0 -t mangle -j CONNMARK --savedscp-mark 0xfc000000/0x01000000 Will save DSCP into the top 6 bits and OR 0x01 (ie set) the least significant bit of most significant byte. Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
This commit is contained in:
Kevin Darbyshire-Bryant
@@ -10,7 +10,7 @@ include $(INCLUDE_DIR)/kernel.mk
|
||||
|
||||
PKG_NAME:=iptables
|
||||
PKG_VERSION:=1.8.3
|
||||
PKG_RELEASE:=1
|
||||
PKG_RELEASE:=2
|
||||
|
||||
PKG_SOURCE_URL:=https://netfilter.org/projects/iptables/files
|
||||
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
|
||||
|
||||
@@ -0,0 +1,206 @@
|
||||
From 69b427fb5e1211c1110ce63be62b70504d04b0ff Mon Sep 17 00:00:00 2001
|
||||
From: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
|
||||
Date: Sat, 23 Mar 2019 10:21:03 +0000
|
||||
Subject: [PATCH] savedscp
|
||||
|
||||
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
|
||||
---
|
||||
extensions/libxt_CONNMARK.c | 68 ++++++++++++++++++++++++++-
|
||||
include/linux/netfilter/xt_connmark.h | 3 +-
|
||||
2 files changed, 69 insertions(+), 2 deletions(-)
|
||||
|
||||
--- a/extensions/libxt_CONNMARK.c
|
||||
+++ b/extensions/libxt_CONNMARK.c
|
||||
@@ -49,6 +49,7 @@ enum {
|
||||
O_CTMASK,
|
||||
O_NFMASK,
|
||||
O_MASK,
|
||||
+ O_SAVEDSCP_MARK,
|
||||
F_SET_MARK = 1 << O_SET_MARK,
|
||||
F_SAVE_MARK = 1 << O_SAVE_MARK,
|
||||
F_RESTORE_MARK = 1 << O_RESTORE_MARK,
|
||||
@@ -61,8 +62,10 @@ enum {
|
||||
F_CTMASK = 1 << O_CTMASK,
|
||||
F_NFMASK = 1 << O_NFMASK,
|
||||
F_MASK = 1 << O_MASK,
|
||||
+ F_SAVEDSCP_MARK = 1 << O_SAVEDSCP_MARK,
|
||||
F_OP_ANY = F_SET_MARK | F_SAVE_MARK | F_RESTORE_MARK |
|
||||
- F_AND_MARK | F_OR_MARK | F_XOR_MARK | F_SET_XMARK,
|
||||
+ F_AND_MARK | F_OR_MARK | F_XOR_MARK | F_SET_XMARK |
|
||||
+ F_SAVEDSCP_MARK,
|
||||
};
|
||||
|
||||
static const char *const xt_connmark_shift_ops[] = {
|
||||
@@ -75,6 +78,7 @@ static void CONNMARK_help(void)
|
||||
printf(
|
||||
"CONNMARK target options:\n"
|
||||
" --set-mark value[/mask] Set conntrack mark value\n"
|
||||
+" --savedscp-mark dscpmask/statemask Save DSCP to conntrack mark value\n"
|
||||
" --save-mark [--mask mask] Save the packet nfmark in the connection\n"
|
||||
" --restore-mark [--mask mask] Restore saved nfmark value\n");
|
||||
}
|
||||
@@ -83,6 +87,8 @@ static void CONNMARK_help(void)
|
||||
static const struct xt_option_entry CONNMARK_opts[] = {
|
||||
{.name = "set-mark", .id = O_SET_MARK, .type = XTTYPE_MARKMASK32,
|
||||
.excl = F_OP_ANY},
|
||||
+ {.name = "savedscp-mark", .id = O_SAVEDSCP_MARK, .type = XTTYPE_MARKMASK32,
|
||||
+ .excl = F_OP_ANY},
|
||||
{.name = "save-mark", .id = O_SAVE_MARK, .type = XTTYPE_NONE,
|
||||
.excl = F_OP_ANY},
|
||||
{.name = "restore-mark", .id = O_RESTORE_MARK, .type = XTTYPE_NONE,
|
||||
@@ -98,6 +104,8 @@ static const struct xt_option_entry conn
|
||||
.excl = F_OP_ANY},
|
||||
{.name = "set-mark", .id = O_SET_MARK, .type = XTTYPE_MARKMASK32,
|
||||
.excl = F_OP_ANY},
|
||||
+ {.name = "savedscp-mark", .id = O_SAVEDSCP_MARK, .type = XTTYPE_MARKMASK32,
|
||||
+ .excl = F_OP_ANY},
|
||||
{.name = "and-mark", .id = O_AND_MARK, .type = XTTYPE_UINT32,
|
||||
.excl = F_OP_ANY},
|
||||
{.name = "or-mark", .id = O_OR_MARK, .type = XTTYPE_UINT32,
|
||||
@@ -124,6 +132,8 @@ static const struct xt_option_entry conn
|
||||
.excl = F_OP_ANY},
|
||||
{.name = "set-mark", .id = O_SET_MARK, .type = XTTYPE_MARKMASK32,
|
||||
.excl = F_OP_ANY},
|
||||
+ {.name = "savedscp-mark", .id = O_SAVEDSCP_MARK, .type = XTTYPE_MARKMASK32,
|
||||
+ .excl = F_OP_ANY},
|
||||
{.name = "and-mark", .id = O_AND_MARK, .type = XTTYPE_UINT32,
|
||||
.excl = F_OP_ANY},
|
||||
{.name = "or-mark", .id = O_OR_MARK, .type = XTTYPE_UINT32,
|
||||
@@ -158,6 +168,7 @@ static void connmark_tg_help(void)
|
||||
" --restore-mark [--ctmask mask] [--nfmask mask]\n"
|
||||
" Copy nfmark to ctmark using masks\n"
|
||||
" --set-mark value[/mask] Set conntrack mark value\n"
|
||||
+" --savedscp-mark value/mask Save DSCP to conntrack mark value\n"
|
||||
" --save-mark [--mask mask] Save the packet nfmark in the connection\n"
|
||||
" --restore-mark [--mask mask] Restore saved nfmark value\n"
|
||||
" --and-mark value Binary AND the ctmark with bits\n"
|
||||
@@ -210,6 +221,11 @@ static void CONNMARK_parse(struct xt_opt
|
||||
markinfo->mark = cb->val.mark;
|
||||
markinfo->mask = cb->val.mask;
|
||||
break;
|
||||
+ case O_SAVEDSCP_MARK:
|
||||
+ markinfo->mode = XT_CONNMARK_SAVEDSCP;
|
||||
+ markinfo->mark = cb->val.mark;
|
||||
+ markinfo->mask = cb->val.mask;
|
||||
+ break;
|
||||
case O_SAVE_MARK:
|
||||
markinfo->mode = XT_CONNMARK_SAVE;
|
||||
break;
|
||||
@@ -238,6 +254,19 @@ static void connmark_tg_parse(struct xt_
|
||||
info->ctmark = cb->val.mark;
|
||||
info->ctmask = cb->val.mark | cb->val.mask;
|
||||
break;
|
||||
+ case O_SAVEDSCP_MARK:
|
||||
+ info->mode = XT_CONNMARK_SAVEDSCP;
|
||||
+ info->ctmark = cb->val.mark;
|
||||
+ info->ctmask = cb->val.mask;
|
||||
+ info->nfmask = info->ctmark ? ffs(info->ctmark) - 1 : 0;
|
||||
+ /* need 6 contiguous bits */
|
||||
+ if ((0x3f & (info->ctmark >> info->nfmask)) != 0x3f)
|
||||
+ xtables_error(PARAMETER_PROBLEM,
|
||||
+ "CONNMARK savedscp: insufficient contiguous dscpmask bits");
|
||||
+ if (info->ctmark & info->ctmask)
|
||||
+ xtables_error(PARAMETER_PROBLEM,
|
||||
+ "CONNMARK savedscp: dscpmask/statemask bits overlap");
|
||||
+ break;
|
||||
case O_AND_MARK:
|
||||
info->mode = XT_CONNMARK_SET;
|
||||
info->ctmark = 0;
|
||||
@@ -283,6 +312,19 @@ static void connmark_tg_parse_v2(struct
|
||||
info->ctmark = cb->val.mark;
|
||||
info->ctmask = cb->val.mark | cb->val.mask;
|
||||
break;
|
||||
+ case O_SAVEDSCP_MARK:
|
||||
+ info->mode = XT_CONNMARK_SAVEDSCP;
|
||||
+ info->ctmark = cb->val.mark;
|
||||
+ info->ctmask = cb->val.mask;
|
||||
+ info->shift_bits = info->ctmark ? ffs(info->ctmark) - 1 : 0;
|
||||
+ /* need 6 contiguous bits */
|
||||
+ if ((0x3f & (info->ctmark >> info->shift_bits)) != 0x3f)
|
||||
+ xtables_error(PARAMETER_PROBLEM,
|
||||
+ "CONNMARK savedscp: insufficient contiguous dscpmask bits");
|
||||
+ if (info->ctmark & info->ctmask)
|
||||
+ xtables_error(PARAMETER_PROBLEM,
|
||||
+ "CONNMARK savedscp: dscpmask/statemask bits overlap");
|
||||
+ break;
|
||||
case O_AND_MARK:
|
||||
info->mode = XT_CONNMARK_SET;
|
||||
info->ctmark = 0;
|
||||
@@ -351,6 +393,11 @@ static void CONNMARK_print(const void *i
|
||||
print_mark(markinfo->mark);
|
||||
print_mask("/", markinfo->mask);
|
||||
break;
|
||||
+ case XT_CONNMARK_SAVEDSCP:
|
||||
+ printf(" CONNMARK savedscp ");
|
||||
+ print_mark(markinfo->mark);
|
||||
+ print_mask("/", markinfo->mask);
|
||||
+ break;
|
||||
case XT_CONNMARK_SAVE:
|
||||
printf(" CONNMARK save ");
|
||||
print_mask("mask ", markinfo->mask);
|
||||
@@ -386,6 +433,10 @@ connmark_tg_print(const void *ip, const
|
||||
printf(" CONNMARK xset 0x%x/0x%x",
|
||||
info->ctmark, info->ctmask);
|
||||
break;
|
||||
+ case XT_CONNMARK_SAVEDSCP:
|
||||
+ printf(" CONNMARK DSCP set 0x%x/0x%x",
|
||||
+ info->ctmark, info->ctmask);
|
||||
+ break;
|
||||
case XT_CONNMARK_SAVE:
|
||||
if (info->nfmask == UINT32_MAX && info->ctmask == UINT32_MAX)
|
||||
printf(" CONNMARK save");
|
||||
@@ -433,6 +484,10 @@ connmark_tg_print_v2(const void *ip, con
|
||||
printf(" CONNMARK xset 0x%x/0x%x",
|
||||
info->ctmark, info->ctmask);
|
||||
break;
|
||||
+ case XT_CONNMARK_SAVEDSCP:
|
||||
+ printf(" CONNMARK DSCP xset 0x%x/0x%x",
|
||||
+ info->ctmark, info->ctmask);
|
||||
+ break;
|
||||
case XT_CONNMARK_SAVE:
|
||||
if (info->nfmask == UINT32_MAX && info->ctmask == UINT32_MAX)
|
||||
printf(" CONNMARK save");
|
||||
@@ -474,6 +529,11 @@ static void CONNMARK_save(const void *ip
|
||||
print_mark(markinfo->mark);
|
||||
print_mask("/", markinfo->mask);
|
||||
break;
|
||||
+ case XT_CONNMARK_SAVEDSCP:
|
||||
+ printf(" --savedscp-mark ");
|
||||
+ print_mark(markinfo->mark);
|
||||
+ print_mask("/", markinfo->mask);
|
||||
+ break;
|
||||
case XT_CONNMARK_SAVE:
|
||||
printf(" --save-mark ");
|
||||
print_mask("--mask ", markinfo->mask);
|
||||
@@ -505,6 +565,9 @@ connmark_tg_save(const void *ip, const s
|
||||
case XT_CONNMARK_SET:
|
||||
printf(" --set-xmark 0x%x/0x%x", info->ctmark, info->ctmask);
|
||||
break;
|
||||
+ case XT_CONNMARK_SAVEDSCP:
|
||||
+ printf(" --savedscp-mark 0x%x/0x%x", info->ctmark, info->ctmask);
|
||||
+ break;
|
||||
case XT_CONNMARK_SAVE:
|
||||
printf(" --save-mark --nfmask 0x%x --ctmask 0x%x",
|
||||
info->nfmask, info->ctmask);
|
||||
@@ -529,6 +592,9 @@ connmark_tg_save_v2(const void *ip, cons
|
||||
case XT_CONNMARK_SET:
|
||||
printf(" --set-xmark 0x%x/0x%x", info->ctmark, info->ctmask);
|
||||
break;
|
||||
+ case XT_CONNMARK_SAVEDSCP:
|
||||
+ printf(" --savedscp-mark 0x%x/0x%x", info->ctmark, info->ctmask);
|
||||
+ break;
|
||||
case XT_CONNMARK_SAVE:
|
||||
printf(" --save-mark --nfmask 0x%x --ctmask 0x%x",
|
||||
info->nfmask, info->ctmask);
|
||||
--- a/include/linux/netfilter/xt_connmark.h
|
||||
+++ b/include/linux/netfilter/xt_connmark.h
|
||||
@@ -15,7 +15,8 @@
|
||||
enum {
|
||||
XT_CONNMARK_SET = 0,
|
||||
XT_CONNMARK_SAVE,
|
||||
- XT_CONNMARK_RESTORE
|
||||
+ XT_CONNMARK_RESTORE,
|
||||
+ XT_CONNMARK_SAVEDSCP
|
||||
};
|
||||
|
||||
struct xt_connmark_tginfo1 {
|
||||
Reference in New Issue
Block a user