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openwrt-mirror/package/network/utils/iptables/patches/010-add-set-dscpmark-support.patch
Curtis Deptuck 2e590a6364 iptables: update to 1.8.6 
Update iptables to 1.8.6

ChangeLog:
https://netfilter.org/projects/iptables/files/changes-iptables-1.8.6.txt

Refresh patch:
101-remove-check-already.patch

Signed-off-by: Curtis Deptuck <curtdept@me.com>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com> [refresh patches]
2021-01-09 10:24:04 +01:00

453 lines
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From 74267bacce0c43e5038b0377cb7c08f1ad9d50a3 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] iptables: connmark - add set-dscpmark option for openwrt
Naive user space front end to xt_connmark 'setdscp' option.
iptables -A QOS_MARK_eth0 -t mangle -j CONNMARK --set-dscpmark 0xfc000000/0x01000000
This version has a hack to support a backport to 4.14
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
---
extensions/libxt_CONNMARK.c | 315 +++++++++++++++++++++++++-
include/linux/netfilter/xt_connmark.h | 10 +
2 files changed, 324 insertions(+), 1 deletion(-)
--- a/extensions/libxt_CONNMARK.c
+++ b/extensions/libxt_CONNMARK.c
@@ -22,6 +22,7 @@
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
+#include <strings.h>
#include <xtables.h>
#include <linux/netfilter/xt_CONNMARK.h>
@@ -49,6 +50,7 @@ enum {
O_CTMASK,
O_NFMASK,
O_MASK,
+ O_DSCP_MARK,
F_SET_MARK = 1 << O_SET_MARK,
F_SAVE_MARK = 1 << O_SAVE_MARK,
F_RESTORE_MARK = 1 << O_RESTORE_MARK,
@@ -61,8 +63,10 @@ enum {
F_CTMASK = 1 << O_CTMASK,
F_NFMASK = 1 << O_NFMASK,
F_MASK = 1 << O_MASK,
+ F_DSCP_MARK = 1 << O_DSCP_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_DSCP_MARK,
};
static const char *const xt_connmark_shift_ops[] = {
@@ -114,6 +118,8 @@ static const struct xt_option_entry conn
.excl = F_MASK, .flags = XTOPT_PUT, XTOPT_POINTER(s, nfmask)},
{.name = "mask", .id = O_MASK, .type = XTTYPE_UINT32,
.excl = F_CTMASK | F_NFMASK},
+ {.name = "set-dscpmark", .id = O_DSCP_MARK, .type = XTTYPE_MARKMASK32,
+ .excl = F_OP_ANY},
XTOPT_TABLEEND,
};
#undef s
@@ -148,6 +154,38 @@ static const struct xt_option_entry conn
};
#undef s
+#define s struct xt_connmark_tginfo3
+static const struct xt_option_entry connmark_tg_opts_v3[] = {
+ {.name = "set-xmark", .id = O_SET_XMARK, .type = XTTYPE_MARKMASK32,
+ .excl = F_OP_ANY},
+ {.name = "set-mark", .id = O_SET_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,
+ .excl = F_OP_ANY},
+ {.name = "xor-mark", .id = O_XOR_MARK, .type = XTTYPE_UINT32,
+ .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,
+ .excl = F_OP_ANY},
+ {.name = "left-shift-mark", .id = O_LEFT_SHIFT_MARK, .type = XTTYPE_UINT8,
+ .min = 0, .max = 32},
+ {.name = "right-shift-mark", .id = O_RIGHT_SHIFT_MARK, .type = XTTYPE_UINT8,
+ .min = 0, .max = 32},
+ {.name = "ctmask", .id = O_CTMASK, .type = XTTYPE_UINT32,
+ .excl = F_MASK, .flags = XTOPT_PUT, XTOPT_POINTER(s, ctmask)},
+ {.name = "nfmask", .id = O_NFMASK, .type = XTTYPE_UINT32,
+ .excl = F_MASK, .flags = XTOPT_PUT, XTOPT_POINTER(s, nfmask)},
+ {.name = "mask", .id = O_MASK, .type = XTTYPE_UINT32,
+ .excl = F_CTMASK | F_NFMASK},
+ {.name = "set-dscpmark", .id = O_DSCP_MARK, .type = XTTYPE_MARKMASK32,
+ .excl = F_OP_ANY},
+ XTOPT_TABLEEND,
+};
+#undef s
+
static void connmark_tg_help(void)
{
printf(
@@ -175,6 +213,15 @@ static void connmark_tg_help_v2(void)
);
}
+static void connmark_tg_help_v3(void)
+{
+ connmark_tg_help_v2();
+ printf(
+" --set-dscpmark value/mask Save DSCP to conntrack mark value\n"
+);
+}
+
+
static void connmark_tg_init(struct xt_entry_target *target)
{
struct xt_connmark_tginfo1 *info = (void *)target->data;
@@ -199,6 +246,16 @@ static void connmark_tg_init_v2(struct x
info->shift_bits = 0;
}
+static void connmark_tg_init_v3(struct xt_entry_target *target)
+{
+ struct xt_connmark_tginfo3 *info;
+
+ connmark_tg_init_v2(target);
+ info = (void *)target->data;
+
+ info->func = 0;
+}
+
static void CONNMARK_parse(struct xt_option_call *cb)
{
struct xt_connmark_target_info *markinfo = cb->data;
@@ -253,6 +310,23 @@ static void connmark_tg_parse(struct xt_
info->ctmark = cb->val.u32;
info->ctmask = 0;
break;
+ case O_DSCP_MARK:
+/* we sneaky sneaky this. nfmask isn't used by the set mark functionality
+ * and by default is set to uint32max. We can use the top bit as a flag
+ * that we're in DSCP_MARK submode of SET_MARK, if set then it's normal
+ * if unset then we're in DSCP_MARK
+ */
+ info->mode = XT_CONNMARK_SET;
+ info->ctmark = cb->val.mark;
+ info->ctmask = cb->val.mask;
+ info->nfmask = info->ctmark ? ffs(info->ctmark) - 1 : 0;
+ /* need 6 contiguous bits */
+ if ((~0 & (info->ctmark >> info->nfmask)) != 0x3f)
+ xtables_error(PARAMETER_PROBLEM,
+ "CONNMARK set-dscpmark: need 6 contiguous dscpmask bits");
+ if (info->ctmark & info->ctmask)
+ xtables_error(PARAMETER_PROBLEM,
+ "CONNMARK set-dscpmark: dscpmask/statemask bits overlap");
case O_SAVE_MARK:
info->mode = XT_CONNMARK_SAVE;
break;
@@ -320,6 +394,78 @@ static void connmark_tg_parse_v2(struct
}
}
+static void connmark_tg_parse_v3(struct xt_option_call *cb)
+{
+ struct xt_connmark_tginfo3 *info = cb->data;
+
+ xtables_option_parse(cb);
+ switch (cb->entry->id) {
+ case O_SET_XMARK:
+ info->mode = XT_CONNMARK_SET;
+ info->func = XT_CONNMARK_VALUE;
+ info->ctmark = cb->val.mark;
+ info->ctmask = cb->val.mask;
+ break;
+ case O_SET_MARK:
+ info->mode = XT_CONNMARK_SET;
+ info->func = XT_CONNMARK_VALUE;
+ info->ctmark = cb->val.mark;
+ info->ctmask = cb->val.mark | cb->val.mask;
+ break;
+ case O_AND_MARK:
+ info->mode = XT_CONNMARK_SET;
+ info->func = XT_CONNMARK_VALUE;
+ info->ctmark = 0;
+ info->ctmask = ~cb->val.u32;
+ break;
+ case O_OR_MARK:
+ info->mode = XT_CONNMARK_SET;
+ info->func = XT_CONNMARK_VALUE;
+ info->ctmark = cb->val.u32;
+ info->ctmask = cb->val.u32;
+ break;
+ case O_XOR_MARK:
+ info->mode = XT_CONNMARK_SET;
+ info->func = XT_CONNMARK_VALUE;
+ info->ctmark = cb->val.u32;
+ info->ctmask = 0;
+ break;
+ case O_DSCP_MARK:
+ info->mode = XT_CONNMARK_SET;
+ info->func = XT_CONNMARK_DSCP;
+ 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 ((~0 & (info->ctmark >> info->shift_bits)) != 0x3f)
+ xtables_error(PARAMETER_PROBLEM,
+ "CONNMARK set-dscpmark: need 6 contiguous dscpmask bits");
+ if (info->ctmark & info->ctmask)
+ xtables_error(PARAMETER_PROBLEM,
+ "CONNMARK set-dscpmark: dscpmask/statemask bits overlap");
+ break;
+ case O_SAVE_MARK:
+ info->mode = XT_CONNMARK_SAVE;
+ break;
+ case O_RESTORE_MARK:
+ info->mode = XT_CONNMARK_RESTORE;
+ break;
+ case O_MASK:
+ info->nfmask = info->ctmask = cb->val.u32;
+ break;
+ case O_LEFT_SHIFT_MARK:
+ info->shift_dir = D_SHIFT_LEFT;
+ info->shift_bits = cb->val.u8;
+ break;
+ case O_RIGHT_SHIFT_MARK:
+ info->shift_dir = D_SHIFT_RIGHT;
+ info->shift_bits = cb->val.u8;
+ break;
+ default:
+ break;
+ }
+}
+
static void connmark_tg_check(struct xt_fcheck_call *cb)
{
if (!(cb->xflags & F_OP_ANY))
@@ -463,6 +609,65 @@ connmark_tg_print_v2(const void *ip, con
}
}
+static void
+connmark_tg_print_v3(const void *ip, const struct xt_entry_target *target,
+ int numeric)
+{
+ const struct xt_connmark_tginfo3 *info = (const void *)target->data;
+ const char *shift_op = xt_connmark_shift_ops[info->shift_dir];
+
+ switch (info->mode) {
+ case XT_CONNMARK_SET:
+ if (info->func & XT_CONNMARK_DSCP) {
+ printf(" CONNMARK DSCP 0x%x/0x%x",
+ info->ctmark, info->ctmask);
+ }
+ if (info->func & XT_CONNMARK_VALUE) {
+ if (info->ctmark == 0)
+ printf(" CONNMARK and 0x%x",
+ (unsigned int)(uint32_t)~info->ctmask);
+ else if (info->ctmark == info->ctmask)
+ printf(" CONNMARK or 0x%x", info->ctmark);
+ else if (info->ctmask == 0)
+ printf(" CONNMARK xor 0x%x", info->ctmark);
+ else if (info->ctmask == 0xFFFFFFFFU)
+ printf(" CONNMARK set 0x%x", info->ctmark);
+ else
+ printf(" CONNMARK 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");
+ else if (info->nfmask == info->ctmask)
+ printf(" CONNMARK save mask 0x%x", info->nfmask);
+ else
+ printf(" CONNMARK save nfmask 0x%x ctmask ~0x%x",
+ info->nfmask, info->ctmask);
+ break;
+ case XT_CONNMARK_RESTORE:
+ if (info->ctmask == UINT32_MAX && info->nfmask == UINT32_MAX)
+ printf(" CONNMARK restore");
+ else if (info->ctmask == info->nfmask)
+ printf(" CONNMARK restore mask 0x%x", info->ctmask);
+ else
+ printf(" CONNMARK restore ctmask 0x%x nfmask ~0x%x",
+ info->ctmask, info->nfmask);
+ break;
+
+ default:
+ printf(" ERROR: UNKNOWN CONNMARK MODE");
+ break;
+ }
+
+ if (info->mode <= XT_CONNMARK_RESTORE &&
+ !(info->mode == XT_CONNMARK_SET && info->func == XT_CONNMARK_DSCP) &&
+ info->shift_bits != 0) {
+ printf(" %s %u", shift_op, info->shift_bits);
+ }
+}
+
static void CONNMARK_save(const void *ip, const struct xt_entry_target *target)
{
const struct xt_connmark_target_info *markinfo =
@@ -548,6 +753,38 @@ connmark_tg_save_v2(const void *ip, cons
}
}
+static void
+connmark_tg_save_v3(const void *ip, const struct xt_entry_target *target)
+{
+ const struct xt_connmark_tginfo3 *info = (const void *)target->data;
+ const char *shift_op = xt_connmark_shift_ops[info->shift_dir];
+
+ switch (info->mode) {
+ case XT_CONNMARK_SET:
+ if (info->func & XT_CONNMARK_VALUE)
+ printf(" --set-xmark 0x%x/0x%x", info->ctmark, info->ctmask);
+ if (info->func & XT_CONNMARK_DSCP)
+ printf(" --set-dscpmark 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);
+ break;
+ case XT_CONNMARK_RESTORE:
+ printf(" --restore-mark --nfmask 0x%x --ctmask 0x%x",
+ info->nfmask, info->ctmask);
+ break;
+ default:
+ printf(" ERROR: UNKNOWN CONNMARK MODE");
+ break;
+ }
+ if (info->mode <= XT_CONNMARK_RESTORE &&
+ !(info->mode == XT_CONNMARK_SET && info->func == XT_CONNMARK_DSCP) &&
+ info->shift_bits != 0) {
+ printf(" --%s %u", shift_op, info->shift_bits);
+ }
+}
+
static int connmark_tg_xlate(struct xt_xlate *xl,
const struct xt_xlate_tg_params *params)
{
@@ -639,6 +876,66 @@ static int connmark_tg_xlate_v2(struct x
return 1;
}
+
+static int connmark_tg_xlate_v3(struct xt_xlate *xl,
+ const struct xt_xlate_tg_params *params)
+{
+ const struct xt_connmark_tginfo3 *info =
+ (const void *)params->target->data;
+ const char *shift_op = xt_connmark_shift_ops[info->shift_dir];
+
+ switch (info->mode) {
+ case XT_CONNMARK_SET:
+ xt_xlate_add(xl, "ct mark set ");
+ if (info->func & XT_CONNMARK_VALUE) {
+ if (info->ctmask == 0xFFFFFFFFU)
+ xt_xlate_add(xl, "0x%x ", info->ctmark);
+ else if (info->ctmark == 0)
+ xt_xlate_add(xl, "ct mark and 0x%x", ~info->ctmask);
+ else if (info->ctmark == info->ctmask)
+ xt_xlate_add(xl, "ct mark or 0x%x",
+ info->ctmark);
+ else if (info->ctmask == 0)
+ xt_xlate_add(xl, "ct mark xor 0x%x",
+ info->ctmark);
+ else
+ xt_xlate_add(xl, "ct mark xor 0x%x and 0x%x",
+ info->ctmark, ~info->ctmask);
+ }
+ if (info->func & XT_CONNMARK_DSCP) {
+/* FIXME the nftables syntax would go here if only we knew what it was */
+ xt_xlate_add(xl, "ct mark set typeof(ct mark) ip dscp "
+ "<< %u or 0x%x", info->shift_bits,
+ info->ctmask);
+ }
+ break;
+ case XT_CONNMARK_SAVE:
+ xt_xlate_add(xl, "ct mark set mark");
+ if (!(info->nfmask == UINT32_MAX &&
+ info->ctmask == UINT32_MAX)) {
+ if (info->nfmask == info->ctmask)
+ xt_xlate_add(xl, " and 0x%x", info->nfmask);
+ }
+ break;
+ case XT_CONNMARK_RESTORE:
+ xt_xlate_add(xl, "meta mark set ct mark");
+ if (!(info->nfmask == UINT32_MAX &&
+ info->ctmask == UINT32_MAX)) {
+ if (info->nfmask == info->ctmask)
+ xt_xlate_add(xl, " and 0x%x", info->nfmask);
+ }
+ break;
+ }
+
+ if (info->mode <= XT_CONNMARK_RESTORE &&
+ !(info->mode == XT_CONNMARK_SET && info->func == XT_CONNMARK_DSCP) &&
+ info->shift_bits != 0) {
+ xt_xlate_add(xl, " %s %u", shift_op, info->shift_bits);
+ }
+
+ return 1;
+}
+
static struct xtables_target connmark_tg_reg[] = {
{
.family = NFPROTO_UNSPEC,
@@ -687,6 +984,22 @@ static struct xtables_target connmark_tg
.x6_options = connmark_tg_opts_v2,
.xlate = connmark_tg_xlate_v2,
},
+ {
+ .version = XTABLES_VERSION,
+ .name = "CONNMARK",
+ .revision = 3,
+ .family = NFPROTO_UNSPEC,
+ .size = XT_ALIGN(sizeof(struct xt_connmark_tginfo3)),
+ .userspacesize = XT_ALIGN(sizeof(struct xt_connmark_tginfo3)),
+ .help = connmark_tg_help_v3,
+ .init = connmark_tg_init_v3,
+ .print = connmark_tg_print_v3,
+ .save = connmark_tg_save_v3,
+ .x6_parse = connmark_tg_parse_v3,
+ .x6_fcheck = connmark_tg_check,
+ .x6_options = connmark_tg_opts_v3,
+ .xlate = connmark_tg_xlate_v3,
+ },
};
void _init(void)
--- a/include/linux/netfilter/xt_connmark.h
+++ b/include/linux/netfilter/xt_connmark.h
@@ -18,6 +18,11 @@ enum {
XT_CONNMARK_RESTORE
};
+enum {
+ XT_CONNMARK_VALUE = (1 << 0),
+ XT_CONNMARK_DSCP = (1 << 1)
+};
+
struct xt_connmark_tginfo1 {
__u32 ctmark, ctmask, nfmask;
__u8 mode;
@@ -28,6 +33,11 @@ struct xt_connmark_tginfo2 {
__u8 shift_dir, shift_bits, mode;
};
+struct xt_connmark_tginfo3 {
+ __u32 ctmark, ctmask, nfmask;
+ __u8 shift_dir, shift_bits, mode, func;
+};
+
struct xt_connmark_mtinfo1 {
__u32 mark, mask;
__u8 invert;
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