Merge branch 'dp83640-fixes'

Stefan Sørensen says:

====================
dp83640 driver fixes

This series fixes a number of minor bugs in the dp83640 driver.
====================

Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 53 insertions, 34 deletions

diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c
index 185b03c08e16..47b711739ba9 100644
--- a/drivers/net/phy/dp83640.c
+++ b/drivers/net/phy/dp83640.c
@@ -20,6 +20,7 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/crc32.h>
 #include <linux/ethtool.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
@@ -36,8 +37,6 @@
 
 #define DP83640_PHY_ID	0x20005ce1
 #define PAGESEL		0x13
-#define LAYER4		0x02
-#define LAYER2		0x01
 #define MAX_RXTS	64
 #define N_EXT_TS	6
 #define N_PER_OUT	7
@@ -68,6 +67,8 @@
 /* phyter seems to miss the mark by 16 ns */
 #define ADJTIME_FIX	16
 
+#define SKB_TIMESTAMP_TIMEOUT	2 /* jiffies */
+
 #if defined(__BIG_ENDIAN)
 #define ENDIAN_FLAG	0
 #elif defined(__LITTLE_ENDIAN)
@@ -110,7 +111,7 @@ struct dp83640_private {
 	struct list_head list;
 	struct dp83640_clock *clock;
 	struct phy_device *phydev;
-	struct work_struct ts_work;
+	struct delayed_work ts_work;
 	int hwts_tx_en;
 	int hwts_rx_en;
 	int layer;
@@ -284,7 +285,7 @@ static void phy2rxts(struct phy_rxts *p, struct rxts *rxts)
 	rxts->seqid = p->seqid;
 	rxts->msgtype = (p->msgtype >> 12) & 0xf;
 	rxts->hash = p->msgtype & 0x0fff;
-	rxts->tmo = jiffies + 2;
+	rxts->tmo = jiffies + SKB_TIMESTAMP_TIMEOUT;
 }
 
 static u64 phy2txts(struct phy_txts *p)
@@ -787,9 +788,12 @@ static int decode_evnt(struct dp83640_private *dp83640,
 	return parsed;
 }
 
+#define DP83640_PACKET_HASH_OFFSET	20
+#define DP83640_PACKET_HASH_LEN		10
+
 static int match(struct sk_buff *skb, unsigned int type, struct rxts *rxts)
 {
-	u16 *seqid;
+	u16 *seqid, hash;
 	unsigned int offset = 0;
 	u8 *msgtype, *data = skb_mac_header(skb);
 
@@ -819,11 +823,19 @@ static int match(struct sk_buff *skb, unsigned int type, struct rxts *rxts)
 		msgtype = data + offset + OFF_PTP_CONTROL;
 	else
 		msgtype = data + offset;
+	if (rxts->msgtype != (*msgtype & 0xf))
+		return 0;
 
 	seqid = (u16 *)(data + offset + OFF_PTP_SEQUENCE_ID);
+	if (rxts->seqid != ntohs(*seqid))
+		return 0;
+
+	hash = ether_crc(DP83640_PACKET_HASH_LEN,
+			 data + offset + DP83640_PACKET_HASH_OFFSET) >> 20;
+	if (rxts->hash != hash)
+		return 0;
 
-	return rxts->msgtype == (*msgtype & 0xf) &&
-		rxts->seqid   == ntohs(*seqid);
+	return 1;
 }
 
 static void decode_rxts(struct dp83640_private *dp83640,
@@ -1103,7 +1115,7 @@ static int dp83640_probe(struct phy_device *phydev)
 		goto no_memory;
 
 	dp83640->phydev = phydev;
-	INIT_WORK(&dp83640->ts_work, rx_timestamp_work);
+	INIT_DELAYED_WORK(&dp83640->ts_work, rx_timestamp_work);
 
 	INIT_LIST_HEAD(&dp83640->rxts);
 	INIT_LIST_HEAD(&dp83640->rxpool);
@@ -1150,7 +1162,7 @@ static void dp83640_remove(struct phy_device *phydev)
 		return;
 
 	enable_status_frames(phydev, false);
-	cancel_work_sync(&dp83640->ts_work);
+	cancel_delayed_work_sync(&dp83640->ts_work);
 
 	skb_queue_purge(&dp83640->rx_queue);
 	skb_queue_purge(&dp83640->tx_queue);
@@ -1282,29 +1294,29 @@ static int dp83640_hwtstamp(struct phy_device *phydev, struct ifreq *ifr)
 	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
 	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
 		dp83640->hwts_rx_en = 1;
-		dp83640->layer = LAYER4;
-		dp83640->version = 1;
+		dp83640->layer = PTP_CLASS_L4;
+		dp83640->version = PTP_CLASS_V1;
 		break;
 	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
 	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
 	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
 		dp83640->hwts_rx_en = 1;
-		dp83640->layer = LAYER4;
-		dp83640->version = 2;
+		dp83640->layer = PTP_CLASS_L4;
+		dp83640->version = PTP_CLASS_V2;
 		break;
 	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
 	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
 	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
 		dp83640->hwts_rx_en = 1;
-		dp83640->layer = LAYER2;
-		dp83640->version = 2;
+		dp83640->layer = PTP_CLASS_L2;
+		dp83640->version = PTP_CLASS_V2;
 		break;
 	case HWTSTAMP_FILTER_PTP_V2_EVENT:
 	case HWTSTAMP_FILTER_PTP_V2_SYNC:
 	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
 		dp83640->hwts_rx_en = 1;
-		dp83640->layer = LAYER4|LAYER2;
-		dp83640->version = 2;
+		dp83640->layer = PTP_CLASS_L4 | PTP_CLASS_L2;
+		dp83640->version = PTP_CLASS_V2;
 		break;
 	default:
 		return -ERANGE;
@@ -1313,11 +1325,11 @@ static int dp83640_hwtstamp(struct phy_device *phydev, struct ifreq *ifr)
 	txcfg0 = (dp83640->version & TX_PTP_VER_MASK) << TX_PTP_VER_SHIFT;
 	rxcfg0 = (dp83640->version & TX_PTP_VER_MASK) << TX_PTP_VER_SHIFT;
 
-	if (dp83640->layer & LAYER2) {
+	if (dp83640->layer & PTP_CLASS_L2) {
 		txcfg0 |= TX_L2_EN;
 		rxcfg0 |= RX_L2_EN;
 	}
-	if (dp83640->layer & LAYER4) {
+	if (dp83640->layer & PTP_CLASS_L4) {
 		txcfg0 |= TX_IPV6_EN | TX_IPV4_EN;
 		rxcfg0 |= RX_IPV6_EN | RX_IPV4_EN;
 	}
@@ -1344,7 +1356,7 @@ static int dp83640_hwtstamp(struct phy_device *phydev, struct ifreq *ifr)
 static void rx_timestamp_work(struct work_struct *work)
 {
 	struct dp83640_private *dp83640 =
-		container_of(work, struct dp83640_private, ts_work);
+		container_of(work, struct dp83640_private, ts_work.work);
 	struct sk_buff *skb;
 
 	/* Deliver expired packets. */
@@ -1361,7 +1373,7 @@ static void rx_timestamp_work(struct work_struct *work)
 	}
 
 	if (!skb_queue_empty(&dp83640->rx_queue))
-		schedule_work(&dp83640->ts_work);
+		schedule_delayed_work(&dp83640->ts_work, SKB_TIMESTAMP_TIMEOUT);
 }
 
 static bool dp83640_rxtstamp(struct phy_device *phydev,
@@ -1383,7 +1395,11 @@ static bool dp83640_rxtstamp(struct phy_device *phydev,
 	if (!dp83640->hwts_rx_en)
 		return false;
 
+	if ((type & dp83640->version) == 0 || (type & dp83640->layer) == 0)
+		return false;
+
 	spin_lock_irqsave(&dp83640->rx_lock, flags);
+	prune_rx_ts(dp83640);
 	list_for_each_safe(this, next, &dp83640->rxts) {
 		rxts = list_entry(this, struct rxts, list);
 		if (match(skb, type, rxts)) {
@@ -1400,9 +1416,11 @@ static bool dp83640_rxtstamp(struct phy_device *phydev,
 
 	if (!shhwtstamps) {
 		skb_info->ptp_type = type;
-		skb_info->tmo = jiffies + 2;
+		skb_info->tmo = jiffies + SKB_TIMESTAMP_TIMEOUT;
 		skb_queue_tail(&dp83640->rx_queue, skb);
-		schedule_work(&dp83640->ts_work);
+		schedule_delayed_work(&dp83640->ts_work, SKB_TIMESTAMP_TIMEOUT);
+	} else {
+		netif_rx_ni(skb);
 	}
 
 	return true;
diff --git a/include/linux/ptp_classify.h b/include/linux/ptp_classify.h
index 159c987b1853..a079656b614c 100644
--- a/include/linux/ptp_classify.h
+++ b/include/linux/ptp_classify.h
@@ -32,9 +32,9 @@
 #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_PMASK 0x30 /* mask for the packet type field */
-#define PTP_CLASS_VLAN  0x40 /* event in a VLAN tagged 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 */
@@ -42,6 +42,7 @@
 #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 */
diff --git a/net/core/ptp_classifier.c b/net/core/ptp_classifier.c
index 4eab4a94a59d..703cf76aa7c2 100644
--- a/net/core/ptp_classifier.c
+++ b/net/core/ptp_classifier.c
@@ -58,7 +58,7 @@
  *   jneq #0x0, drop_ieee1588      ; for PTP_GEN_BIT and drop these
  *   ldh [18]                      ; reload payload
  *   and #0xf                      ; mask PTP_CLASS_VMASK
- *   or #0x70                      ; PTP_CLASS_VLAN|PTP_CLASS_L2
+ *   or #0xc0                      ; PTP_CLASS_VLAN|PTP_CLASS_L2
  *   ret a                         ; return PTP class
  *
  * ; PTP over UDP over IPv4 over 802.1Q over Ethernet
@@ -73,7 +73,7 @@
  *   jneq #319, drop_8021q_ipv4    ; is port PTP_EV_PORT ?
  *   ldh [x + 26]                  ; load payload
  *   and #0xf                      ; mask PTP_CLASS_VMASK
- *   or #0x50                      ; PTP_CLASS_VLAN|PTP_CLASS_IPV4
+ *   or #0x90                      ; PTP_CLASS_VLAN|PTP_CLASS_IPV4
  *   ret a                         ; return PTP class
  *   drop_8021q_ipv4: ret #0x0     ; PTP_CLASS_NONE
  *
@@ -86,7 +86,7 @@
  *   jneq #319, drop_8021q_ipv6          ; is port PTP_EV_PORT ?
  *   ldh [66]                      ; load payload
  *   and #0xf                      ; mask PTP_CLASS_VMASK
- *   or #0x60                      ; PTP_CLASS_VLAN|PTP_CLASS_IPV6
+ *   or #0xa0                      ; PTP_CLASS_VLAN|PTP_CLASS_IPV6
  *   ret a                         ; return PTP class
  *   drop_8021q_ipv6: ret #0x0     ; PTP_CLASS_NONE
  *
@@ -98,7 +98,7 @@
  *   jneq #0x0, drop_ieee1588      ; for PTP_GEN_BIT and drop these
  *   ldh [14]                      ; reload payload
  *   and #0xf                      ; mask PTP_CLASS_VMASK
- *   or #0x30                      ; PTP_CLASS_L2
+ *   or #0x40                      ; PTP_CLASS_L2
  *   ret a                         ; return PTP class
  *   drop_ieee1588: ret #0x0       ; PTP_CLASS_NONE
  */
@@ -150,7 +150,7 @@ void __init ptp_classifier_init(void)
 		{ 0x15,  0, 35, 0x00000000 },
 		{ 0x28,  0,  0, 0x00000012 },
 		{ 0x54,  0,  0, 0x0000000f },
-		{ 0x44,  0,  0, 0x00000070 },
+		{ 0x44,  0,  0, 0x000000c0 },
 		{ 0x16,  0,  0, 0x00000000 },
 		{ 0x15,  0, 12, 0x00000800 },
 		{ 0x30,  0,  0, 0x0000001b },
@@ -162,7 +162,7 @@ void __init ptp_classifier_init(void)
 		{ 0x15,  0,  4, 0x0000013f },
 		{ 0x48,  0,  0, 0x0000001a },
 		{ 0x54,  0,  0, 0x0000000f },
-		{ 0x44,  0,  0, 0x00000050 },
+		{ 0x44,  0,  0, 0x00000090 },
 		{ 0x16,  0,  0, 0x00000000 },
 		{ 0x06,  0,  0, 0x00000000 },
 		{ 0x15,  0,  8, 0x000086dd },
@@ -172,7 +172,7 @@ void __init ptp_classifier_init(void)
 		{ 0x15,  0,  4, 0x0000013f },
 		{ 0x28,  0,  0, 0x00000042 },
 		{ 0x54,  0,  0, 0x0000000f },
-		{ 0x44,  0,  0, 0x00000060 },
+		{ 0x44,  0,  0, 0x000000a0 },
 		{ 0x16,  0,  0, 0x00000000 },
 		{ 0x06,  0,  0, 0x00000000 },
 		{ 0x15,  0,  7, 0x000088f7 },
@@ -181,7 +181,7 @@ void __init ptp_classifier_init(void)
 		{ 0x15,  0,  4, 0x00000000 },
 		{ 0x28,  0,  0, 0x0000000e },
 		{ 0x54,  0,  0, 0x0000000f },
-		{ 0x44,  0,  0, 0x00000030 },
+		{ 0x44,  0,  0, 0x00000040 },
 		{ 0x16,  0,  0, 0x00000000 },
 		{ 0x06,  0,  0, 0x00000000 },
 	};