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ptp: Classify ptp over ip over vlan packets

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This extends the ptp bpf to also match ptp over ip over vlan packets. The ptp
classes are changed to orthogonal bitfields representing version, transport
and vlan values to simplify matching.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Sørensen
2014-06-27 11:59:10 +02:00
committed by David S. Miller
parent b9c701edc7
commit ae5c6c6d7b
4 changed files with 92 additions and 47 deletions
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5
include/linux/ptp_classify.h
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@@ -33,8 +33,8 @@
#define PTP_CLASS_IPV4 0x10 /* event in an IPV4 UDP packet */
#define PTP_CLASS_IPV6 0x20 /* event in an IPV6 UDP packet */
#define PTP_CLASS_L2 0x30 /* event in a L2 packet */
#define PTP_CLASS_VLAN 0x40 /* event in a VLAN tagged L2 packet */
#define PTP_CLASS_PMASK 0xf0 /* mask for the packet type field */
#define PTP_CLASS_PMASK 0x30 /* mask for the packet type field */
#define PTP_CLASS_VLAN 0x40 /* event in a VLAN tagged packet */
#define PTP_CLASS_V1_IPV4 (PTP_CLASS_V1 | PTP_CLASS_IPV4)
#define PTP_CLASS_V1_IPV6 (PTP_CLASS_V1 | PTP_CLASS_IPV6) /* probably DNE */
@@ -54,7 +54,6 @@
#define IP6_HLEN 40
#define UDP_HLEN 8
#define OFF_IHL 14
#define OFF_PTP6 (ETH_HLEN + IP6_HLEN + UDP_HLEN)
#define IPV4_HLEN(data) (((struct iphdr *)(data + OFF_IHL))->ihl << 2)
#if defined(CONFIG_NET_PTP_CLASSIFY)