Release 4.12 include/linux/ptp_classify.h
/*
* PTP 1588 support
*
* This file implements a BPF that recognizes PTP event messages.
*
* Copyright (C) 2010 OMICRON electronics GmbH
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _PTP_CLASSIFY_H_
#define _PTP_CLASSIFY_H_
#include <linux/ip.h>
#include <linux/skbuff.h>
#define PTP_CLASS_NONE 0x00
/* not a PTP event message */
#define PTP_CLASS_V1 0x01
/* protocol version 1 */
#define PTP_CLASS_V2 0x02
/* protocol version 2 */
#define PTP_CLASS_VMASK 0x0f
/* max protocol version is 15 */
#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 0x40
/* event in a L2 packet */
#define PTP_CLASS_PMASK 0x70
/* mask for the packet type field */
#define PTP_CLASS_VLAN 0x80
/* 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 */
#define PTP_CLASS_V2_IPV4 (PTP_CLASS_V2 | PTP_CLASS_IPV4)
#define PTP_CLASS_V2_IPV6 (PTP_CLASS_V2 | PTP_CLASS_IPV6)
#define PTP_CLASS_V2_L2 (PTP_CLASS_V2 | PTP_CLASS_L2)
#define PTP_CLASS_V2_VLAN (PTP_CLASS_V2 | PTP_CLASS_VLAN)
#define PTP_CLASS_L4 (PTP_CLASS_IPV4 | PTP_CLASS_IPV6)
#define PTP_EV_PORT 319
#define PTP_GEN_BIT 0x08
/* indicates general message, if set in message type */
#define OFF_PTP_SOURCE_UUID 22
/* PTPv1 only */
#define OFF_PTP_SEQUENCE_ID 30
#define OFF_PTP_CONTROL 32
/* PTPv1 only */
/* Below defines should actually be removed at some point in time. */
#define IP6_HLEN 40
#define UDP_HLEN 8
#define OFF_IHL 14
#define IPV4_HLEN(data) (((struct iphdr *)(data + OFF_IHL))->ihl << 2)
#if defined(CONFIG_NET_PTP_CLASSIFY)
/**
* ptp_classify_raw - classify a PTP packet
* @skb: buffer
*
* Runs a minimal BPF dissector to classify a network packet to
* determine the PTP class. In case the skb does not contain any
* PTP protocol data, PTP_CLASS_NONE will be returned, otherwise
* PTP_CLASS_V1_IPV{4,6}, PTP_CLASS_V2_IPV{4,6} or
* PTP_CLASS_V2_{L2,VLAN}, depending on the packet content.
*/
unsigned int ptp_classify_raw(const struct sk_buff *skb);
void __init ptp_classifier_init(void);
#else
static inline void ptp_classifier_init(void)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Daniel Borkmann | 8 | 100.00% | 1 | 100.00% |
| Total | 8 | 100.00% | 1 | 100.00% |
#endif
#endif /* _PTP_CLASSIFY_H_ */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Richard Cochran | 111 | 65.29% | 3 | 42.86% |
| Daniel Borkmann | 48 | 28.24% | 2 | 28.57% |
| Stefan Sörensen | 11 | 6.47% | 2 | 28.57% |
| Total | 170 | 100.00% | 7 | 100.00% |
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