[NET]: Split skb->csum
... into anonymous union of __wsum and __u32 (csum and csum_offset resp.)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/cassini.c b/drivers/net/cassini.c
index 521c5b7..fd2cc13 100644
--- a/drivers/net/cassini.c
+++ b/drivers/net/cassini.c
@@ -2825,7 +2825,7 @@
u64 csum_start_off, csum_stuff_off;
csum_start_off = (u64) (skb->h.raw - skb->data);
- csum_stuff_off = (u64) ((skb->h.raw + skb->csum) - skb->data);
+ csum_stuff_off = csum_start_off + skb->csum_offset;
ctrl = TX_DESC_CSUM_EN |
CAS_BASE(TX_DESC_CSUM_START, csum_start_off) |
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 7a08288..32dde0a 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2826,7 +2826,7 @@
context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
context_desc->upper_setup.tcp_fields.tucss = css;
- context_desc->upper_setup.tcp_fields.tucso = css + skb->csum;
+ 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);
diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index e09f575..7b12721 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -1249,7 +1249,7 @@
if(likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
struct ixgb_buffer *buffer_info;
css = skb->h.raw - skb->data;
- cso = (skb->h.raw + skb->csum) - skb->data;
+ cso = css + skb->csum_offset;
i = adapter->tx_ring.next_to_use;
context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i);
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index 806081b..36350e6 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -1955,7 +1955,7 @@
flags = (MXGEFW_FLAGS_NO_TSO | MXGEFW_FLAGS_FIRST);
if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
cksum_offset = (skb->h.raw - skb->data);
- pseudo_hdr_offset = (skb->h.raw + skb->csum) - skb->data;
+ pseudo_hdr_offset = cksum_offset + skb->csum_offset;
/* If the headers are excessively large, then we must
* fall back to a software checksum */
if (unlikely(cksum_offset > 255 || pseudo_hdr_offset > 127)) {
diff --git a/drivers/net/sk98lin/skge.c b/drivers/net/sk98lin/skge.c
index a5d41eb..12cbfd1 100644
--- a/drivers/net/sk98lin/skge.c
+++ b/drivers/net/sk98lin/skge.c
@@ -1562,7 +1562,7 @@
if (pMessage->ip_summed == CHECKSUM_PARTIAL) {
u16 hdrlen = pMessage->h.raw - pMessage->data;
- u16 offset = hdrlen + pMessage->csum;
+ u16 offset = hdrlen + pMessage->csum_offset;
if ((pMessage->h.ipiph->protocol == IPPROTO_UDP ) &&
(pAC->GIni.GIChipRev == 0) &&
@@ -1681,7 +1681,7 @@
*/
if (pMessage->ip_summed == CHECKSUM_PARTIAL) {
u16 hdrlen = pMessage->h.raw - pMessage->data;
- u16 offset = hdrlen + pMessage->csum;
+ u16 offset = hdrlen + pMessage->csum_offset;
Control = BMU_STFWD;
diff --git a/drivers/net/skge.c b/drivers/net/skge.c
index 27b537c..5513907 100644
--- a/drivers/net/skge.c
+++ b/drivers/net/skge.c
@@ -2565,7 +2565,7 @@
td->csum_offs = 0;
td->csum_start = offset;
- td->csum_write = offset + skb->csum;
+ td->csum_write = offset + skb->csum_offset;
} else
control = BMU_CHECK;
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index 0ef1848..842abd9 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1350,7 +1350,7 @@
u32 tcpsum;
tcpsum = offset << 16; /* sum start */
- tcpsum |= offset + skb->csum; /* sum write */
+ tcpsum |= offset + skb->csum_offset; /* sum write */
ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
if (skb->nh.iph->protocol == IPPROTO_UDP)
diff --git a/drivers/net/sungem.c b/drivers/net/sungem.c
index 253e96e..334c6cf 100644
--- a/drivers/net/sungem.c
+++ b/drivers/net/sungem.c
@@ -1030,7 +1030,7 @@
u64 csum_start_off, csum_stuff_off;
csum_start_off = (u64) (skb->h.raw - skb->data);
- csum_stuff_off = (u64) ((skb->h.raw + skb->csum) - skb->data);
+ csum_stuff_off = csum_start_off + skb->csum_offset;
ctrl = (TXDCTRL_CENAB |
(csum_start_off << 15) |
diff --git a/drivers/net/sunhme.c b/drivers/net/sunhme.c
index 9d7cd13..ec432ea 100644
--- a/drivers/net/sunhme.c
+++ b/drivers/net/sunhme.c
@@ -2272,7 +2272,7 @@
u32 csum_start_off, csum_stuff_off;
csum_start_off = (u32) (skb->h.raw - skb->data);
- csum_stuff_off = (u32) ((skb->h.raw + skb->csum) - skb->data);
+ csum_stuff_off = csum_start_off + skb->csum_offset;
tx_flags = (TXFLAG_OWN | TXFLAG_CSENABLE |
((csum_start_off << 14) & TXFLAG_CSBUFBEGIN) |
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index fcab543..14ec16d 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -274,7 +274,10 @@
unsigned int len,
data_len,
mac_len;
- __wsum csum;
+ union {
+ __wsum csum;
+ __u32 csum_offset;
+ };
__u32 priority;
__u8 local_df:1,
cloned:1,
diff --git a/net/core/dev.c b/net/core/dev.c
index 1a36b17..59d058a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1191,9 +1191,9 @@
offset = skb->tail - skb->h.raw;
BUG_ON(offset <= 0);
- BUG_ON(skb->csum + 2 > offset);
+ BUG_ON(skb->csum_offset + 2 > offset);
- *(__sum16*)(skb->h.raw + skb->csum) = csum_fold(csum);
+ *(__sum16*)(skb->h.raw + skb->csum_offset) = csum_fold(csum);
out_set_summed:
skb->ip_summed = CHECKSUM_NONE;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 07c25d6..a90bc43 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -1414,7 +1414,7 @@
skb->len - csstart, 0);
if (skb->ip_summed == CHECKSUM_PARTIAL) {
- long csstuff = csstart + skb->csum;
+ long csstuff = csstart + skb->csum_offset;
*((__sum16 *)(to + csstuff)) = csum_fold(csum);
}
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index e9d4671..4913f25 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -504,7 +504,7 @@
if (skb->ip_summed == CHECKSUM_PARTIAL) {
th->check = ~tcp_v4_check(th, len,
inet->saddr, inet->daddr, 0);
- skb->csum = offsetof(struct tcphdr, check);
+ skb->csum_offset = offsetof(struct tcphdr, check);
} else {
th->check = tcp_v4_check(th, len, inet->saddr, inet->daddr,
csum_partial((char *)th,
@@ -526,7 +526,7 @@
th->check = 0;
th->check = ~tcp_v4_check(th, skb->len, iph->saddr, iph->daddr, 0);
- skb->csum = offsetof(struct tcphdr, check);
+ skb->csum_offset = offsetof(struct tcphdr, check);
skb->ip_summed = CHECKSUM_PARTIAL;
return 0;
}
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 28e4cf6..1807a30 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -422,7 +422,7 @@
/*
* Only one fragment on the socket.
*/
- skb->csum = offsetof(struct udphdr, check);
+ skb->csum_offset = offsetof(struct udphdr, check);
uh->check = ~csum_tcpudp_magic(src, dst, len, IPPROTO_UDP, 0);
} else {
/*
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 0adb337..517c500 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -948,7 +948,7 @@
if (skb->ip_summed == CHECKSUM_PARTIAL) {
th->check = ~csum_ipv6_magic(&np->saddr, &np->daddr, len, IPPROTO_TCP, 0);
- skb->csum = offsetof(struct tcphdr, check);
+ skb->csum_offset = offsetof(struct tcphdr, check);
} else {
th->check = csum_ipv6_magic(&np->saddr, &np->daddr, len, IPPROTO_TCP,
csum_partial((char *)th, th->doff<<2,
@@ -970,7 +970,7 @@
th->check = 0;
th->check = ~csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr, skb->len,
IPPROTO_TCP, 0);
- skb->csum = offsetof(struct tcphdr, check);
+ skb->csum_offset = offsetof(struct tcphdr, check);
skb->ip_summed = CHECKSUM_PARTIAL;
return 0;
}