commit 2c7524fc3ba82306e9834a22adc731bd563ed158
Author: Jamal Hadi Salim <hadi@cyberus.ca>
Date:   Wed Oct 14 08:09:54 2009 -0400

    skbedit: Add support to mark packets
    
    This adds support for setting the skb mark.
    
    Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>

diff --git a/include/linux/tc_act/tc_skbedit.h b/include/linux/tc_act/tc_skbedit.h
index a14e461..7a2e910 100644
--- a/include/linux/tc_act/tc_skbedit.h
+++ b/include/linux/tc_act/tc_skbedit.h
@@ -26,6 +26,7 @@
 
 #define SKBEDIT_F_PRIORITY		0x1
 #define SKBEDIT_F_QUEUE_MAPPING		0x2
+#define SKBEDIT_F_MARK			0x4
 
 struct tc_skbedit {
 	tc_gen;
@@ -37,6 +38,7 @@ enum {
 	TCA_SKBEDIT_PARMS,
 	TCA_SKBEDIT_PRIORITY,
 	TCA_SKBEDIT_QUEUE_MAPPING,
+	TCA_SKBEDIT_MARK,
 	__TCA_SKBEDIT_MAX
 };
 #define TCA_SKBEDIT_MAX (__TCA_SKBEDIT_MAX - 1)
diff --git a/tc/m_skbedit.c b/tc/m_skbedit.c
index ecb1f2d..623dc53 100644
--- a/tc/m_skbedit.c
+++ b/tc/m_skbedit.c
@@ -31,11 +31,13 @@
 static void
 explain(void)
 {
-	fprintf(stderr, "Usage: ... skbedit <[QM] [PM]>\n"
+	fprintf(stderr, "Usage: ... skbedit <[QM] [PM] [MM]>\n"
 			"QM = queue_mapping QUEUE_MAPPING\n"
 			"PM = priority PRIORITY \n"
+			"MM = mark MARK \n"
 			"QUEUE_MAPPING = device transmit queue to use\n"
-			"PRIORITY = classID to assign to priority field\n");
+			"PRIORITY = classID to assign to priority field\n"
+			"MARK = firewall mark to set\n");
 }
 
 static void
@@ -55,7 +57,7 @@ parse_skbedit(struct action_util *a, int *argc_p, char ***argv_p, int tca_id,
 	struct rtattr *tail;
 	unsigned int tmp;
 	__u16 queue_mapping;
-	__u32 flags = 0, priority;
+	__u32 flags = 0, priority, mark;
 	struct tc_skbedit sel = { 0 };
 
 	if (matches(*argv, "skbedit") != 0)
@@ -81,6 +83,14 @@ parse_skbedit(struct action_util *a, int *argc_p, char ***argv_p, int tca_id,
 				return -1;
 			}
 			ok++;
+		} else if (matches(*argv, "mark") == 0) {
+			flags |= SKBEDIT_F_MARK;
+			NEXT_ARG();
+			if (get_tc_classid(&mark, *argv)) {
+				fprintf(stderr, "Illegal mark\n");
+				return -1;
+			}
+			ok++;
 		} else if (matches(*argv, "help") == 0) {
 			usage();
 		} else {
@@ -138,6 +148,9 @@ parse_skbedit(struct action_util *a, int *argc_p, char ***argv_p, int tca_id,
 	if (flags & SKBEDIT_F_PRIORITY)
 		addattr_l(n, MAX_MSG, TCA_SKBEDIT_PRIORITY,
 			  &priority, sizeof(priority));
+	if (flags & SKBEDIT_F_MARK)
+		addattr_l(n, MAX_MSG, TCA_SKBEDIT_MARK,
+			  &mark, sizeof(mark));
 	tail->rta_len = (char *)NLMSG_TAIL(n) - (char *)tail;
 
 	*argc_p = argc;
@@ -151,6 +164,7 @@ static int print_skbedit(struct action_util *au, FILE *f, struct rtattr *arg)
 	struct rtattr *tb[TCA_SKBEDIT_MAX + 1];
 	SPRINT_BUF(b1);
 	__u32 *priority;
+	__u32 *mark;
 	__u16 *queue_mapping;
 
 	if (arg == NULL)
@@ -175,6 +189,10 @@ static int print_skbedit(struct action_util *au, FILE *f, struct rtattr *arg)
 		priority = RTA_DATA(tb[TCA_SKBEDIT_PRIORITY]);
 		fprintf(f, " priority %s", sprint_tc_classid(*priority, b1));
 	}
+	if (tb[TCA_SKBEDIT_MARK] != NULL) {
+		mark = RTA_DATA(tb[TCA_SKBEDIT_MARK]);
+		fprintf(f, " mark %d", *mark);
+	}
 
 	if (show_stats) {
 		if (tb[TCA_SKBEDIT_TM]) {