---

yaml
---
r: 150045
b: refs/heads/master
c: b947356
h: refs/heads/master
i:
  150043: 6cd6bdf
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8dc92f7e2ecfd93f5c57da78594a7a5482e2c15e
+refs/heads/master: b9473560c6d882e0fbd3a8817e906c847b11c722

trunk/drivers/net/igb/e1000_82575.h

@@ -130,6 +130,7 @@ struct e1000_adv_tx_context_desc {
 #define E1000_ADVTXD_MACLEN_SHIFT    9  /* Adv ctxt desc mac len shift */
 #define E1000_ADVTXD_TUCMD_IPV4    0x00000400  /* IP Packet Type: 1=IPv4 */
 #define E1000_ADVTXD_TUCMD_L4T_TCP 0x00000800  /* L4 Packet TYPE of TCP */
+#define E1000_ADVTXD_TUCMD_L4T_SCTP 0x00001000 /* L4 packet TYPE of SCTP */
 /* IPSec Encrypt Enable for ESP */
 #define E1000_ADVTXD_L4LEN_SHIFT     8  /* Adv ctxt L4LEN shift */
 #define E1000_ADVTXD_MSS_SHIFT      16  /* Adv ctxt MSS shift */

trunk/drivers/net/igb/e1000_defines.h

@@ -291,6 +291,7 @@
 /* Receive Checksum Control */
 #define E1000_RXCSUM_IPOFL     0x00000100   /* IPv4 checksum offload */
 #define E1000_RXCSUM_TUOFL     0x00000200   /* TCP / UDP checksum offload */
+#define E1000_RXCSUM_CRCOFL    0x00000800   /* CRC32 offload enable */
 #define E1000_RXCSUM_PCSD      0x00002000   /* packet checksum disabled */
 
 /* Header split receive */

trunk/drivers/net/igb/igb_ethtool.c

@@ -293,10 +293,16 @@ static u32 igb_get_tx_csum(struct net_device *netdev)
 
 static int igb_set_tx_csum(struct net_device *netdev, u32 data)
 {
-	if (data)
+	struct igb_adapter *adapter = netdev_priv(netdev);
+
+	if (data) {
 		netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
-	else
-		netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
+		if (adapter->hw.mac.type == e1000_82576)
+			netdev->features |= NETIF_F_SCTP_CSUM;
+	} else {
+		netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+		                      NETIF_F_SCTP_CSUM);
+	}
 
 	return 0;
 }

trunk/drivers/net/igb/igb_main.c

@@ -1345,6 +1345,9 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 	if (pci_using_dac)
 		netdev->features |= NETIF_F_HIGHDMA;
 
+	if (adapter->hw.mac.type == e1000_82576)
+		netdev->features |= NETIF_F_SCTP_CSUM;
+
 	adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw);
 
 	/* before reading the NVM, reset the controller to put the device in a
@@ -2249,6 +2252,10 @@ static void igb_configure_rx(struct igb_adapter *adapter)
 	/* Don't need to set TUOFL or IPOFL, they default to 1 */
 	if (!adapter->rx_csum)
 		rxcsum &= ~(E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPOFL);
+	else if (adapter->hw.mac.type == e1000_82576)
+		/* Enable Receive Checksum Offload for SCTP */
+		rxcsum |= E1000_RXCSUM_CRCOFL;
+
 	wr32(E1000_RXCSUM, rxcsum);
 
 	/* Set the default pool for the PF's first queue */
@@ -3064,11 +3071,15 @@ static inline bool igb_tx_csum_adv(struct igb_adapter *adapter,
 				tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
 				if (ip_hdr(skb)->protocol == IPPROTO_TCP)
 					tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+				else if (ip_hdr(skb)->protocol == IPPROTO_SCTP)
+					tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP;
 				break;
 			case cpu_to_be16(ETH_P_IPV6):
 				/* XXX what about other V6 headers?? */
 				if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
 					tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
+				else if (ipv6_hdr(skb)->nexthdr == IPPROTO_SCTP)
+					tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP;
 				break;
 			default:
 				if (unlikely(net_ratelimit()))
@@ -4449,14 +4460,22 @@ static inline void igb_rx_checksum_adv(struct igb_adapter *adapter,
 	/* TCP/UDP checksum error bit is set */
 	if (status_err &
 	    (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) {
+		/*
+		 * work around errata with sctp packets where the TCPE aka
+		 * L4E bit is set incorrectly on 64 byte (60 byte w/o crc)
+		 * packets, (aka let the stack check the crc32c)
+		 */
+		if (!((adapter->hw.mac.type == e1000_82576) &&
+		      (skb->len == 60)))
+			adapter->hw_csum_err++;
 		/* let the stack verify checksum errors */
-		adapter->hw_csum_err++;
 		return;
 	}
 	/* It must be a TCP or UDP packet with a valid checksum */
 	if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))
 		skb->ip_summed = CHECKSUM_UNNECESSARY;
 
+	dev_dbg(&adapter->pdev->dev, "cksum success: bits %08X\n", status_err);
 	adapter->hw_csum_good++;
 }