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[NET]: Split skb->csum

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... 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>
This commit is contained in:
Al Viro 2006-11-20 18:07:29 -08:00 committed by David S. Miller
parent 5b14027bf2
commit ff1dcadb1b
15 changed files with 22 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/cassini.c
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@ -2825,7 +2825,7 @@ static inline int cas_xmit_tx_ringN(struct cas *cp, int ring,
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) |

2
drivers/net/e1000/e1000_main.c
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@ -2826,7 +2826,7 @@ e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
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);

2
drivers/net/ixgb/ixgb_main.c
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@ -1249,7 +1249,7 @@ ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb)
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);

2
drivers/net/myri10ge/myri10ge.c
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@ -1955,7 +1955,7 @@ again:
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)) {

4
drivers/net/sk98lin/skge.c
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@ -1562,7 +1562,7 @@ struct sk_buff *pMessage) /* pointer to send-message */
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 @@ struct sk_buff *pMessage) /* pointer to send-message */
*/
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;

2
drivers/net/skge.c
View File

@ -2565,7 +2565,7 @@ static int skge_xmit_frame(struct sk_buff *skb, struct net_device *dev)
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;

2
drivers/net/sky2.c
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@ -1350,7 +1350,7 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
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)

2
drivers/net/sungem.c
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@ -1030,7 +1030,7 @@ static int gem_start_xmit(struct sk_buff *skb, struct net_device *dev)
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) |

2
drivers/net/sunhme.c
View File

@ -2272,7 +2272,7 @@ static int happy_meal_start_xmit(struct sk_buff *skb, struct net_device *dev)
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) |

5
include/linux/skbuff.h
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@ -274,7 +274,10 @@ struct sk_buff {
unsigned int len,
data_len,
mac_len;
__wsum csum;
union {
__wsum csum;
__u32 csum_offset;
};
__u32 priority;
__u8 local_df:1,
cloned:1,

4
net/core/dev.c
View File

@ -1191,9 +1191,9 @@ int skb_checksum_help(struct sk_buff *skb)
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;

2
net/core/skbuff.c
View File

@ -1414,7 +1414,7 @@ void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to)
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);
}

4
net/ipv4/tcp_ipv4.c
View File

@ -504,7 +504,7 @@ void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb)
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 @@ int tcp_v4_gso_send_check(struct sk_buff *skb)
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;
}

2
net/ipv4/udp.c
View File

@ -422,7 +422,7 @@ static void udp4_hwcsum_outgoing(struct sock *sk, struct sk_buff *skb,
/*
* 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 {
/*

4
net/ipv6/tcp_ipv6.c
View File

@ -948,7 +948,7 @@ static void tcp_v6_send_check(struct sock *sk, int len, struct sk_buff *skb)
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 @@ static int tcp_v6_gso_send_check(struct sk_buff *skb)
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;
}