408fbc22ef
Sample use case of how this is encoded: user space via tuntap (or a connected VM/Machine/container) encodes the tcindex TLV. Sample use case of decoding: IFE action decodes it and the skb->tc_index is then used to classify. So something like this for encoded ICMP packets: .. first decode then reclassify... skb->tcindex will be set sudo $TC filter add dev $ETH parent ffff: prio 2 protocol 0xbeef \ u32 match u32 0 0 flowid 1:1 \ action ife decode reclassify ...next match the decode icmp packet... sudo $TC filter add dev $ETH parent ffff: prio 4 protocol ip \ u32 match ip protocol 1 0xff flowid 1:1 \ action continue ... last classify it using the tcindex classifier and do someaction.. sudo $TC filter add dev $ETH parent ffff: prio 5 protocol ip \ handle 0x11 tcindex classid 1:1 \ action blah.. Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
41 lines
783 B
C
41 lines
783 B
C
#ifndef __UAPI_TC_IFE_H
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#define __UAPI_TC_IFE_H
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#include <linux/types.h>
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#include <linux/pkt_cls.h>
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#define TCA_ACT_IFE 25
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/* Flag bits for now just encoding/decoding; mutually exclusive */
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#define IFE_ENCODE 1
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#define IFE_DECODE 0
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struct tc_ife {
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tc_gen;
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__u16 flags;
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};
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/*XXX: We need to encode the total number of bytes consumed */
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enum {
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TCA_IFE_UNSPEC,
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TCA_IFE_PARMS,
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TCA_IFE_TM,
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TCA_IFE_DMAC,
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TCA_IFE_SMAC,
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TCA_IFE_TYPE,
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TCA_IFE_METALST,
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TCA_IFE_PAD,
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__TCA_IFE_MAX
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};
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#define TCA_IFE_MAX (__TCA_IFE_MAX - 1)
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#define IFE_META_SKBMARK 1
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#define IFE_META_HASHID 2
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#define IFE_META_PRIO 3
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#define IFE_META_QMAP 4
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#define IFE_META_TCINDEX 5
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/*Can be overridden at runtime by module option*/
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#define __IFE_META_MAX 6
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#define IFE_META_MAX (__IFE_META_MAX - 1)
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#endif
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