Merge tag 'v3.15-rc1' into patchwork

Linux 3.15-rc1

* tag 'v3.15-rc1': (12180 commits)
  Linux 3.15-rc1
  mm: Initialize error in shmem_file_aio_read()
  cifs: Use min_t() when comparing "size_t" and "unsigned long"
  sym53c8xx_2: Set DID_REQUEUE return code when aborting squeue
  powerpc: Don't try to set LPCR unless we're in hypervisor mode
  futex: update documentation for ordering guarantees
  ceph: fix pr_fmt() redefinition
  vti: don't allow to add the same tunnel twice
  gre: don't allow to add the same tunnel twice
  drivers: net: xen-netfront: fix array initialization bug
  missing bits of "splice: fix racy pipe->buffers uses"
  cifs: fix the race in cifs_writev()
  ceph_sync_{,direct_}write: fix an oops on ceph_osdc_new_request() failure
  pktgen: be friendly to LLTX devices
  r8152: check RTL8152_UNPLUG
  net: sun4i-emac: add promiscuous support
  net/apne: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO
  blackfin: cleanup board files
  bf609: clock: drop unused clock bit set/clear functions
  Blackfin: bf537: rename "CONFIG_ADT75"
  ...

1 files changed, 21 insertions, 82 deletions

diff --git a/include/linux/ptp_classify.h b/include/linux/ptp_classify.h
index 1dc420ba213a..7dfed71d76a6 100644
--- a/include/linux/ptp_classify.h
+++ b/include/linux/ptp_classify.h
@@ -23,15 +23,8 @@
 #ifndef _PTP_CLASSIFY_H_
 #define _PTP_CLASSIFY_H_
 
-#include <linux/if_ether.h>
-#include <linux/if_vlan.h>
 #include <linux/ip.h>
-#include <linux/filter.h>
-#ifdef __KERNEL__
-#include <linux/in.h>
-#else
-#include <netinet/in.h>
-#endif
+#include <linux/skbuff.h>
 
 #define PTP_CLASS_NONE  0x00 /* not a PTP event message */
 #define PTP_CLASS_V1    0x01 /* protocol version 1 */
@@ -44,7 +37,7 @@
 #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_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)
@@ -53,88 +46,34 @@
 #define PTP_EV_PORT 319
 #define PTP_GEN_BIT 0x08 /* indicates general message, if set in message type */
 
-#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 OFF_PTP_SOURCE_UUID	22 /* PTPv1 only */
 #define OFF_PTP_SEQUENCE_ID	30
 #define OFF_PTP_CONTROL		32 /* PTPv1 only */
 
-#define IPV4_HLEN(data) (((struct iphdr *)(data + OFF_IHL))->ihl << 2)
-
+/* Below defines should actually be removed at some point in time. */
 #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_IHL		14
 #define OFF_PTP6	(ETH_HLEN + IP6_HLEN + UDP_HLEN)
+#define IPV4_HLEN(data) (((struct iphdr *)(data + OFF_IHL))->ihl << 2)
 
-#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)
+#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);
 
-static inline int ptp_filter_init(struct sock_filter *f, int len)
+void __init ptp_classifier_init(void);
+#else
+static inline void ptp_classifier_init(void)
 {
-	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,   9, ETH_P_8021Q		}, /* f goto L50   */ \
-	{OP_LDH,	0,   0, OFF_ETYPE + 4		}, /*              */ \
-	{OP_JEQ,	0,  15, ETH_P_1588		}, /* f goto L60   */ \
-	{OP_LDB,	0,   0, ETH_HLEN + VLAN_HLEN	}, /*              */ \
-	{OP_AND,	0,   0, PTP_GEN_BIT		}, /*              */ \
-	{OP_JEQ,	0,  12, 0			}, /* f goto L6x   */ \
-	{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,   7, ETH_P_1588		}, /* f goto L61   */ \
-	{OP_LDB,	0,   0, ETH_HLEN		}, /*              */ \
-	{OP_AND,	0,   0, PTP_GEN_BIT		}, /*              */ \
-	{OP_JEQ,	0,   4, 0			}, /* f goto L6x   */ \
-	{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
+#endif /* _PTP_CLASSIFY_H_ */