Add support for DSCP matches and target

[project/firewall3.git] / rules.c

diff --git a/rules.c b/rules.c
index 5e1d5f3a6385fe084f53d9e4feae8659c4afe2ac..5af8bfd952623d625b538f4968e7180ef6407225 100644 (file)
--- a/rules.c
+++ b/rules.c
@@ -62,6 +62,9 @@ const struct fw3_option fw3_rule_opts[] = {
        FW3_OPT("set_mark",            mark,      rule,     set_mark),
        FW3_OPT("set_xmark",           mark,      rule,     set_xmark),
 
+       FW3_OPT("dscp",                dscp,      rule,     dscp),
+       FW3_OPT("set_dscp",            dscp,      rule,     set_dscp),
+
        FW3_OPT("target",              target,    rule,     target),
 
        { }
@@ -156,19 +159,28 @@ check_rule(struct fw3_state *state, struct fw3_rule *r, struct uci_element *e)
            r->target == FW3_FLAG_MARK)
        {
                warn_section("rule", r, e, "is set to target MARK but specifies neither "
-                               "'set_mark' nor 'set_xmark' option");
+                                          "'set_mark' nor 'set_xmark' option");
                return false;
        }
 
-       if (r->_dest && r->target == FW3_FLAG_MARK)
+       if (!r->set_dscp.set && r->target == FW3_FLAG_DSCP)
        {
-               warn_section("rule", r, e, "must not specify 'dest' for MARK target");
+               warn_section("rule", r, e, "is set to target DSCP but specifies no "
+                                          "'set_dscp' option");
                return false;
        }
 
-       if (r->set_mark.invert || r->set_xmark.invert)
+       if (r->_dest && (r->target == FW3_FLAG_MARK || r->target == FW3_FLAG_DSCP))
        {
-               warn_section("rule", r, e, "must not have inverted 'set_mark' or 'set_xmark'");
+               warn_section("rule", r, e, "must not specify 'dest' for %s target",
+                            fw3_flag_names[r->target]);
+               return false;
+       }
+
+       if (r->set_mark.invert || r->set_xmark.invert || r->set_dscp.invert)
+       {
+               warn_section("rule", r, e, "must not have inverted 'set_mark', "
+                                          "'set_xmark' or 'set_dscp'");
                return false;
        }
 
@@ -202,7 +214,7 @@ check_rule(struct fw3_state *state, struct fw3_rule *r, struct uci_element *e)
                warn_section("rule", r, e, "has no target specified, defaulting to REJECT");
                r->target = FW3_FLAG_REJECT;
        }
-       else if (r->target > FW3_FLAG_MARK)
+       else if (r->target > FW3_FLAG_DSCP)
        {
                warn_section("rule", r, e, "has invalid target specified, defaulting to REJECT");
                r->target = FW3_FLAG_REJECT;
@@ -297,7 +309,8 @@ append_chain(struct fw3_ipt_rule *r, struct fw3_rule *rule)
        {
                snprintf(chain, sizeof(chain), "zone_%s_helper", rule->src.name);
        }
-       else if (rule->target == FW3_FLAG_MARK && (rule->_src || rule->src.any))
+       else if ((rule->target == FW3_FLAG_MARK || rule->target == FW3_FLAG_DSCP) &&
+                (rule->_src || rule->src.any))
        {
                snprintf(chain, sizeof(chain), "PREROUTING");
        }
@@ -353,6 +366,13 @@ static void set_target(struct fw3_ipt_rule *r, struct fw3_rule *rule)
                fw3_ipt_rule_addarg(r, false, name, buf);
                return;
 
+       case FW3_FLAG_DSCP:
+               sprintf(buf, "0x%x", rule->set_dscp.dscp);
+
+               fw3_ipt_rule_target(r, "DSCP");
+               fw3_ipt_rule_addarg(r, false, "--set-dscp", buf);
+               return;
+
        case FW3_FLAG_NOTRACK:
                fw3_ipt_rule_target(r, "CT");
                fw3_ipt_rule_addarg(r, false, "--notrack", NULL);
@@ -461,6 +481,7 @@ print_rule(struct fw3_ipt_handle *handle, struct fw3_state *state,
        fw3_ipt_rule_limit(r, &rule->limit);
        fw3_ipt_rule_time(r, &rule->time);
        fw3_ipt_rule_mark(r, &rule->mark);
+       fw3_ipt_rule_dscp(r, &rule->dscp);
        set_target(r, rule);
        fw3_ipt_rule_extra(r, rule->extra);
        set_comment(r, rule->name, num);
@@ -492,6 +513,7 @@ expand_rule(struct fw3_ipt_handle *handle, struct fw3_state *state,
        if ((rule->target == FW3_FLAG_NOTRACK && handle->table != FW3_TABLE_RAW) ||
            (rule->target == FW3_FLAG_HELPER && handle->table != FW3_TABLE_RAW)  ||
            (rule->target == FW3_FLAG_MARK && handle->table != FW3_TABLE_MANGLE) ||
+           (rule->target == FW3_FLAG_DSCP && handle->table != FW3_TABLE_MANGLE) ||
                (rule->target < FW3_FLAG_NOTRACK && handle->table != FW3_TABLE_FILTER))
                return;