From: Jamal Hadi Salim <j...@mojatatu.com>
hard code static value of 10 for qmap
mark of 12
prio of 13
and hashid of 11
sudo tc filter add dev $ETH parent 1: protocol ip prio 10 \
u32 match ip protocol 1 0xff flowid 1:2 \
action ife encode \
type 0xDEAD \
use mark 12 \
use prio 13 \
use hashid 11 \
use qmap 10 \
dst 02:15:15:15:15:15
Note: as of the time of submission skbedit of queue map doesnt work
(just in case you try to use it)
Signed-off-by: Jamal Hadi Salim <j...@mojatatu.com>
---
net/sched/Kconfig | 5 +++
net/sched/Makefile | 1 +
net/sched/act_meta_qmap.c | 100 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 106 insertions(+)
create mode 100644 net/sched/act_meta_qmap.c
diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index 4c0c694..c25b192 100644
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -766,6 +766,11 @@ config NET_IFE_SKBHASH
depends on NET_ACT_IFE
---help---
+config NET_IFE_SKBQMAP
+ tristate "Support to encoding decoding skb queue_map on IFE action"
+ depends on NET_ACT_IFE
+ ---help---
+
config NET_CLS_IND
bool "Incoming device classification"
depends on NET_CLS_U32 || NET_CLS_FW
diff --git a/net/sched/Makefile b/net/sched/Makefile
index 321a9bc..fa97501 100644
--- a/net/sched/Makefile
+++ b/net/sched/Makefile
@@ -23,6 +23,7 @@ obj-$(CONFIG_NET_ACT_IFE) += act_ife.o
obj-$(CONFIG_NET_IFE_SKBMARK) += act_meta_mark.o
obj-$(CONFIG_NET_IFE_SKBPRIO) += act_meta_skbprio.o
obj-$(CONFIG_NET_IFE_SKBHASH) += act_meta_skbhash.o
+obj-$(CONFIG_NET_IFE_SKBQMAP) += act_meta_qmap.o
obj-$(CONFIG_NET_SCH_FIFO) += sch_fifo.o
obj-$(CONFIG_NET_SCH_CBQ) += sch_cbq.o
obj-$(CONFIG_NET_SCH_HTB) += sch_htb.o
diff --git a/net/sched/act_meta_qmap.c b/net/sched/act_meta_qmap.c
new file mode 100644
index 0000000..e5e8dbe
--- /dev/null
+++ b/net/sched/act_meta_qmap.c
@@ -0,0 +1,100 @@
+/*
+ * net/sched/act_meta_qmap.c skb queue map encoder/decoder
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * copyright Jamal Hadi Salim (2015)
+ *
+*/
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <net/netlink.h>
+#include <net/pkt_sched.h>
+#include <uapi/linux/tc_act/tc_ife.h>
+#include <net/tc_act/tc_ife.h>
+#include <linux/ip.h> /*XXX*/
+
+int skbqmap_check(struct sk_buff *skb, struct tcf_meta_info *e)
+{
+ //XXX: skb_get_queue_mapping()?
+ u32 ifeqmap = skb->queue_mapping;
+
+ if (e->metaval) {
+ ifeqmap = *(u32 *)e->metaval;
+ }
+
+ if (!ifeqmap)
+ return 0;
+ /* data + pad + LV = 2+2+4 */
+ return 8;
+}
+
+int skbqmap_encode(struct sk_buff *skb, void *skbdata, struct tcf_meta_info *e)
+{
+ /*(XXX: skb_get_queue_mapping()? */
+ u16 ifeqmap = skb->queue_mapping;
+
+ if (e->metaval) {
+ ifeqmap = *(u16 *)e->metaval;
+ }
+
+ if (!ifeqmap)
+ return 0;
+
+ ifeqmap = htons(ifeqmap);
+
+ return tlv_meta_encode(skbdata, e->metaid, 2, &ifeqmap);
+}
+
+int qmap_decode(struct sk_buff *skb, void *data, u16 len)
+{
+ u16 qm = *(u16 *) data;
+
+ skb->queue_mapping = ntohs(qm);
+ return 0;
+}
+
+static struct tcf_meta_ops ife_qmap_ops = {
+ .metaid = IFE_META_QMAP,
+ .metatype = NLA_U16,
+ .name = "skbqmap",
+ .synopsis = "skb queue map 16 bit metadata",
+ .check_presence = skbqmap_check,
+ .encode = skbqmap_encode,
+ .decode = qmap_decode,
+ .get = get_meta_u16,
+ .alloc = alloc_meta_u16,
+ .owner = THIS_MODULE,
+};
+
+static int __init ifeqmap_init_module(void)
+{
+ pr_emerg("Loaded IFE qmap\n");
+
+ return register_ife_op(&ife_qmap_ops);
+}
+
+static void __exit ifeqmap_cleanup_module(void)
+{
+ pr_emerg("Unloaded IFE qmap\n");
+ unregister_ife_op(&ife_qmap_ops);
+}
+
+module_init(ifeqmap_init_module);
+module_exit(ifeqmap_cleanup_module);
+
+MODULE_AUTHOR("Jamal Hadi Salim(2015)");
+MODULE_DESCRIPTION("Inter-FE skb qmap metadata action");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_IFE_META(IFE_META_QMAP);
--
1.9.1
