commit 84fa7933a33f806bbbaae6775e87459b1ec584c0
author Patrick McHardy <kaber@trash.net> Tue Aug 29 16:44:56 2006 -0700
committer David S. Miller <davem@sunset.davemloft.net> Fri Sep 22 14:53:53 2006 -0700
tree 5be404225d90f640997b12f631e9b496b3fd0d61
parent 8584d6df39db5601965f9bc5e3bf2fea833ad7bb

[NET]: Replace CHECKSUM_HW by CHECKSUM_PARTIAL/CHECKSUM_COMPLETE

Replace CHECKSUM_HW by CHECKSUM_PARTIAL (for outgoing packets, whose
checksum still needs to be completed) and CHECKSUM_COMPLETE (for
incoming packets, device supplied full checksum).

Patch originally from Herbert Xu, updated by myself for 2.6.18-rc3.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/tcp_output.c

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index b4f3ffe..9252a50 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -577,7 +577,7 @@
 	TCP_SKB_CB(buff)->sacked = TCP_SKB_CB(skb)->sacked;
 	TCP_SKB_CB(skb)->sacked &= ~TCPCB_AT_TAIL;
 
-	if (!skb_shinfo(skb)->nr_frags && skb->ip_summed != CHECKSUM_HW) {
+	if (!skb_shinfo(skb)->nr_frags && skb->ip_summed != CHECKSUM_PARTIAL) {
 		/* Copy and checksum data tail into the new buffer. */
 		buff->csum = csum_partial_copy_nocheck(skb->data + len, skb_put(buff, nsize),
 						       nsize, 0);
@@ -586,7 +586,7 @@
 
 		skb->csum = csum_block_sub(skb->csum, buff->csum, len);
 	} else {
-		skb->ip_summed = CHECKSUM_HW;
+		skb->ip_summed = CHECKSUM_PARTIAL;
 		skb_split(skb, buff, len);
 	}
 
@@ -689,7 +689,7 @@
 		__pskb_trim_head(skb, len - skb_headlen(skb));
 
 	TCP_SKB_CB(skb)->seq += len;
-	skb->ip_summed = CHECKSUM_HW;
+	skb->ip_summed = CHECKSUM_PARTIAL;
 
 	skb->truesize	     -= len;
 	sk->sk_wmem_queued   -= len;
@@ -1062,7 +1062,7 @@
 	/* This packet was never sent out yet, so no SACK bits. */
 	TCP_SKB_CB(buff)->sacked = 0;
 
-	buff->ip_summed = skb->ip_summed = CHECKSUM_HW;
+	buff->ip_summed = skb->ip_summed = CHECKSUM_PARTIAL;
 	skb_split(skb, buff, len);
 
 	/* Fix up tso_factor for both original and new SKB.  */
@@ -1206,8 +1206,7 @@
 	TCP_SKB_CB(nskb)->flags = TCPCB_FLAG_ACK;
 	TCP_SKB_CB(nskb)->sacked = 0;
 	nskb->csum = 0;
-	if (skb->ip_summed == CHECKSUM_HW)
-		nskb->ip_summed = CHECKSUM_HW;
+	nskb->ip_summed = skb->ip_summed;
 
 	len = 0;
 	while (len < probe_size) {
@@ -1231,7 +1230,7 @@
 			                           ~(TCPCB_FLAG_FIN|TCPCB_FLAG_PSH);
 			if (!skb_shinfo(skb)->nr_frags) {
 				skb_pull(skb, copy);
-				if (skb->ip_summed != CHECKSUM_HW)
+				if (skb->ip_summed != CHECKSUM_PARTIAL)
 					skb->csum = csum_partial(skb->data, skb->len, 0);
 			} else {
 				__pskb_trim_head(skb, copy);
@@ -1572,10 +1571,9 @@
 
 		memcpy(skb_put(skb, next_skb_size), next_skb->data, next_skb_size);
 
-		if (next_skb->ip_summed == CHECKSUM_HW)
-			skb->ip_summed = CHECKSUM_HW;
+		skb->ip_summed = next_skb->ip_summed;
 
-		if (skb->ip_summed != CHECKSUM_HW)
+		if (skb->ip_summed != CHECKSUM_PARTIAL)
 			skb->csum = csum_block_add(skb->csum, next_skb->csum, skb_size);
 
 		/* Update sequence range on original skb. */