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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-04 11:47:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-04 11:47:58 -0700
commit6ba74014c1ab0e37af7de6f64b4eccbbae3cb9e7 (patch)
tree8f3892fc44f1e403675a6d7e88fda5c70e56ee4c /include/linux/ptp_classify.h
parent5abd9ccced7a726c817dd6b5b96bc933859138d1 (diff)
parent3ff1c25927e3af61c6bf0e4ed959504058ae4565 (diff)
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1443 commits) phy/marvell: add 88ec048 support igb: Program MDICNFG register prior to PHY init e1000e: correct MAC-PHY interconnect register offset for 82579 hso: Add new product ID can: Add driver for esd CAN-USB/2 device l2tp: fix export of header file for userspace can-raw: Fix skb_orphan_try handling Revert "net: remove zap_completion_queue" net: cleanup inclusion phy/marvell: add 88e1121 interface mode support u32: negative offset fix net: Fix a typo from "dev" to "ndev" igb: Use irq_synchronize per vector when using MSI-X ixgbevf: fix null pointer dereference due to filter being set for VLAN 0 e1000e: Fix irq_synchronize in MSI-X case e1000e: register pm_qos request on hardware activation ip_fragment: fix subtracting PPPOE_SES_HLEN from mtu twice net: Add getsockopt support for TCP thin-streams cxgb4: update driver version cxgb4: add new PCI IDs ... Manually fix up conflicts in: - drivers/net/e1000e/netdev.c: due to pm_qos registration infrastructure changes - drivers/net/phy/marvell.c: conflict between adding 88ec048 support and cleaning up the IDs - drivers/net/wireless/ipw2x00/ipw2100.c: trivial ipw2100_pm_qos_req conflict (registration change vs marking it static)
Diffstat (limited to 'include/linux/ptp_classify.h')
-rw-r--r--include/linux/ptp_classify.h126
1 files changed, 126 insertions, 0 deletions
diff --git a/include/linux/ptp_classify.h b/include/linux/ptp_classify.h
new file mode 100644
index 000000000000..943a85ab0020
--- /dev/null
+++ b/include/linux/ptp_classify.h
@@ -0,0 +1,126 @@
+/*
+ * 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/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/filter.h>
+#ifdef __KERNEL__
+#include <linux/in.h>
+#else
+#include <netinet/in.h>
+#endif
+
+#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 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_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_EV_PORT 319
+
+#define OFF_ETYPE 12
+#define OFF_IHL 14
+#define OFF_FRAG 20
+#define OFF_PROTO4 23
+#define OFF_NEXT 6
+#define OFF_UDP_DST 2
+
+#define IP6_HLEN 40
+#define UDP_HLEN 8
+
+#define RELOFF_DST4 (ETH_HLEN + OFF_UDP_DST)
+#define OFF_DST6 (ETH_HLEN + IP6_HLEN + OFF_UDP_DST)
+#define OFF_PTP6 (ETH_HLEN + IP6_HLEN + UDP_HLEN)
+
+#define OP_AND (BPF_ALU | BPF_AND | BPF_K)
+#define OP_JEQ (BPF_JMP | BPF_JEQ | BPF_K)
+#define OP_JSET (BPF_JMP | BPF_JSET | BPF_K)
+#define OP_LDB (BPF_LD | BPF_B | BPF_ABS)
+#define OP_LDH (BPF_LD | BPF_H | BPF_ABS)
+#define OP_LDHI (BPF_LD | BPF_H | BPF_IND)
+#define OP_LDX (BPF_LDX | BPF_B | BPF_MSH)
+#define OP_OR (BPF_ALU | BPF_OR | BPF_K)
+#define OP_RETA (BPF_RET | BPF_A)
+#define OP_RETK (BPF_RET | BPF_K)
+
+static inline int ptp_filter_init(struct sock_filter *f, int len)
+{
+ if (OP_LDH == f[0].code)
+ return sk_chk_filter(f, len);
+ else
+ return 0;
+}
+
+#define PTP_FILTER \
+ {OP_LDH, 0, 0, OFF_ETYPE }, /* */ \
+ {OP_JEQ, 0, 12, ETH_P_IP }, /* f goto L20 */ \
+ {OP_LDB, 0, 0, OFF_PROTO4 }, /* */ \
+ {OP_JEQ, 0, 9, IPPROTO_UDP }, /* f goto L10 */ \
+ {OP_LDH, 0, 0, OFF_FRAG }, /* */ \
+ {OP_JSET, 7, 0, 0x1fff }, /* t goto L11 */ \
+ {OP_LDX, 0, 0, OFF_IHL }, /* */ \
+ {OP_LDHI, 0, 0, RELOFF_DST4 }, /* */ \
+ {OP_JEQ, 0, 4, PTP_EV_PORT }, /* f goto L12 */ \
+ {OP_LDHI, 0, 0, ETH_HLEN + UDP_HLEN }, /* */ \
+ {OP_AND, 0, 0, PTP_CLASS_VMASK }, /* */ \
+ {OP_OR, 0, 0, PTP_CLASS_IPV4 }, /* */ \
+ {OP_RETA, 0, 0, 0 }, /* */ \
+/*L1x*/ {OP_RETK, 0, 0, PTP_CLASS_NONE }, /* */ \
+/*L20*/ {OP_JEQ, 0, 9, ETH_P_IPV6 }, /* f goto L40 */ \
+ {OP_LDB, 0, 0, ETH_HLEN + OFF_NEXT }, /* */ \
+ {OP_JEQ, 0, 6, IPPROTO_UDP }, /* f goto L30 */ \
+ {OP_LDH, 0, 0, OFF_DST6 }, /* */ \
+ {OP_JEQ, 0, 4, PTP_EV_PORT }, /* f goto L31 */ \
+ {OP_LDH, 0, 0, OFF_PTP6 }, /* */ \
+ {OP_AND, 0, 0, PTP_CLASS_VMASK }, /* */ \
+ {OP_OR, 0, 0, PTP_CLASS_IPV6 }, /* */ \
+ {OP_RETA, 0, 0, 0 }, /* */ \
+/*L3x*/ {OP_RETK, 0, 0, PTP_CLASS_NONE }, /* */ \
+/*L40*/ {OP_JEQ, 0, 6, ETH_P_8021Q }, /* f goto L50 */ \
+ {OP_LDH, 0, 0, OFF_ETYPE + 4 }, /* */ \
+ {OP_JEQ, 0, 9, ETH_P_1588 }, /* f goto L60 */ \
+ {OP_LDH, 0, 0, ETH_HLEN + VLAN_HLEN }, /* */ \
+ {OP_AND, 0, 0, PTP_CLASS_VMASK }, /* */ \
+ {OP_OR, 0, 0, PTP_CLASS_VLAN }, /* */ \
+ {OP_RETA, 0, 0, 0 }, /* */ \
+/*L50*/ {OP_JEQ, 0, 4, ETH_P_1588 }, /* f goto L61 */ \
+ {OP_LDH, 0, 0, ETH_HLEN }, /* */ \
+ {OP_AND, 0, 0, PTP_CLASS_VMASK }, /* */ \
+ {OP_OR, 0, 0, PTP_CLASS_L2 }, /* */ \
+ {OP_RETA, 0, 0, 0 }, /* */ \
+/*L6x*/ {OP_RETK, 0, 0, PTP_CLASS_NONE },
+
+#endif