net/sched: Allow flower to match on GTP options

Options are as follows: PDU_TYPE:QFI and they refernce to the fields from the PDU Session Protocol. PDU Session data is conveyed in GTP-U Extension Header. GTP-U Extension Header is described in 3GPP TS 29.281. PDU Session Protocol is described in 3GPP TS 38.415. PDU_TYPE - indicates the type of the PDU Session Information (4 bits) QFI - QoS Flow Identifier (6 bits) # ip link add gtp_dev type gtp role sgsn # tc qdisc add dev gtp_dev ingress # tc filter add dev gtp_dev protocol ip parent ffff: \ flower \ enc_key_id 11 \ gtp_opts 1:8/ff:ff \ action mirred egress redirect dev eth0

Wojciech Drewek committed 4 years ago

Commit e3acda71 parent d33bd754 files · +139 −1Browse files

Showing the changes to include/uapi (2 of 4 files). Show all

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2 files

include/uapi/linux/if_tunnel.h +3 −1
include/uapi/linux/pkt_cls.h +15 −0

include/uapi/linux/if_tunnel.h+3−1

@@ -176,8 +176,10 @@ enum { · 175 unmodified lines
176	176	#define TUNNEL_VXLAN_OPT __cpu_to_be16(0x1000)
177	177	#define TUNNEL_NOCACHE __cpu_to_be16(0x2000)
178	178	#define TUNNEL_ERSPAN_OPT __cpu_to_be16(0x4000)
	179	+#define TUNNEL_GTP_OPT __cpu_to_be16(0x8000)
179	180
180	181	#define TUNNEL_OPTIONS_PRESENT \
181		− (TUNNEL_GENEVE_OPT \| TUNNEL_VXLAN_OPT \| TUNNEL_ERSPAN_OPT)
	182	+ (TUNNEL_GENEVE_OPT \| TUNNEL_VXLAN_OPT \| TUNNEL_ERSPAN_OPT \| \
	183	+ TUNNEL_GTP_OPT)
182	184
183	185	#endif /* _UAPI_IF_TUNNEL_H_ */

include/uapi/linux/pkt_cls.h+15−0

@@ -616,6 +616,10 @@ enum { · 615 unmodified lines
616	616	* TCA_FLOWER_KEY_ENC_OPT_ERSPAN_
617	617	* attributes
618	618	*/
	619	+ TCA_FLOWER_KEY_ENC_OPTS_GTP, /* Nested
	620	+ * TCA_FLOWER_KEY_ENC_OPT_GTP_
	621	+ * attributes
	622	+ */
619	623	__TCA_FLOWER_KEY_ENC_OPTS_MAX,
620	624	};
621	625
@@ -654,6 +658,17 @@ enum { · 32 unmodified lines
654	658	#define TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX \
655	659	(__TCA_FLOWER_KEY_ENC_OPT_ERSPAN_MAX - 1)
656	660
	661	+enum {
	662	+ TCA_FLOWER_KEY_ENC_OPT_GTP_UNSPEC,
	663	+ TCA_FLOWER_KEY_ENC_OPT_GTP_PDU_TYPE, /* u8 */
	664	+ TCA_FLOWER_KEY_ENC_OPT_GTP_QFI, /* u8 */
	665	+
	666	+ __TCA_FLOWER_KEY_ENC_OPT_GTP_MAX,
	667	+};
	668	+
	669	+#define TCA_FLOWER_KEY_ENC_OPT_GTP_MAX \
	670	+ (__TCA_FLOWER_KEY_ENC_OPT_GTP_MAX - 1)
	671	+
657	672	enum {
658	673	TCA_FLOWER_KEY_MPLS_OPTS_UNSPEC,
659	674	TCA_FLOWER_KEY_MPLS_OPTS_LSE,