---

yaml
---
r: 112231
b: refs/heads/master
c: 3ed3067
h: refs/heads/master
i:
  112229: d30c0f9
  112227: 10119b9
  112223: 06ccbaf
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: af807c82978ec1b8c5120b59b78ef951b3e4603b
+refs/heads/master: 3ed30676f5bc9960c67644fa37c5fdc36ae47b5b

trunk/drivers/net/e1000/e1000_main.c

@@ -2873,32 +2873,49 @@ static bool e1000_tx_csum(struct e1000_adapter *adapter,
 	struct e1000_buffer *buffer_info;
 	unsigned int i;
 	u8 css;
+	u32 cmd_len = E1000_TXD_CMD_DEXT;
 
-	if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
-		css = skb_transport_offset(skb);
+	if (skb->ip_summed != CHECKSUM_PARTIAL)
+		return false;
 
-		i = tx_ring->next_to_use;
-		buffer_info = &tx_ring->buffer_info[i];
-		context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
+	switch (skb->protocol) {
+	case __constant_htons(ETH_P_IP):
+		if (ip_hdr(skb)->protocol == IPPROTO_TCP)
+			cmd_len |= E1000_TXD_CMD_TCP;
+		break;
+	case __constant_htons(ETH_P_IPV6):
+		/* XXX not handling all IPV6 headers */
+		if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
+			cmd_len |= E1000_TXD_CMD_TCP;
+		break;
+	default:
+		if (unlikely(net_ratelimit()))
+			DPRINTK(DRV, WARNING,
+			        "checksum_partial proto=%x!\n", skb->protocol);
+		break;
+	}
 
-		context_desc->lower_setup.ip_config = 0;
-		context_desc->upper_setup.tcp_fields.tucss = css;
-		context_desc->upper_setup.tcp_fields.tucso =
-			css + skb->csum_offset;
-		context_desc->upper_setup.tcp_fields.tucse = 0;
-		context_desc->tcp_seg_setup.data = 0;
-		context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
+	css = skb_transport_offset(skb);
 
-		buffer_info->time_stamp = jiffies;
-		buffer_info->next_to_watch = i;
+	i = tx_ring->next_to_use;
+	buffer_info = &tx_ring->buffer_info[i];
+	context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
 
-		if (unlikely(++i == tx_ring->count)) i = 0;
-		tx_ring->next_to_use = i;
+	context_desc->lower_setup.ip_config = 0;
+	context_desc->upper_setup.tcp_fields.tucss = css;
+	context_desc->upper_setup.tcp_fields.tucso =
+		css + skb->csum_offset;
+	context_desc->upper_setup.tcp_fields.tucse = 0;
+	context_desc->tcp_seg_setup.data = 0;
+	context_desc->cmd_and_length = cpu_to_le32(cmd_len);
 
-		return true;
-	}
+	buffer_info->time_stamp = jiffies;
+	buffer_info->next_to_watch = i;
 
-	return false;
+	if (unlikely(++i == tx_ring->count)) i = 0;
+	tx_ring->next_to_use = i;
+
+	return true;
 }
 
 #define E1000_MAX_TXD_PWR	12