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[NET]: Annotate callers of csum_fold() in net/* 

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 2006-11-14 21:24:49 -08:00 committed by David S. Miller
parent 9981a0e36a
commit d3bc23e7ee
13 changed files with 24 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
net/core/datagram.c
View File

@ -413,9 +413,9 @@ fault:
unsigned int __skb_checksum_complete(struct sk_buff *skb)
{
unsigned int sum;
__sum16 sum;
sum = (u16)csum_fold(skb_checksum(skb, 0, skb->len, skb->csum));
sum = csum_fold(skb_checksum(skb, 0, skb->len, skb->csum));
if (likely(!sum)) {
if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE))
netdev_rx_csum_fault(skb->dev);
@ -441,7 +441,7 @@ EXPORT_SYMBOL(__skb_checksum_complete);
int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb,
int hlen, struct iovec *iov)
{
unsigned int csum;
__wsum csum;
int chunk = skb->len - hlen;
/* Skip filled elements.
@ -460,7 +460,7 @@ int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb,
if (skb_copy_and_csum_datagram(skb, hlen, iov->iov_base,
chunk, &csum))
goto fault;
if ((unsigned short)csum_fold(csum))
if (csum_fold(csum))
goto csum_error;
if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE))
netdev_rx_csum_fault(skb->dev);

4
net/core/dev.c
View File

@ -1169,7 +1169,7 @@ EXPORT_SYMBOL(netif_device_attach);
*/
int skb_checksum_help(struct sk_buff *skb)
{
unsigned int csum;
__wsum csum;
int ret = 0, offset = skb->h.raw - skb->data;
if (skb->ip_summed == CHECKSUM_COMPLETE)
@ -1193,7 +1193,7 @@ int skb_checksum_help(struct sk_buff *skb)
BUG_ON(offset <= 0);
BUG_ON(skb->csum + 2 > offset);
*(u16*)(skb->h.raw + skb->csum) = csum_fold(csum);
*(__sum16*)(skb->h.raw + skb->csum) = csum_fold(csum);
out_set_summed:
skb->ip_summed = CHECKSUM_NONE;

2
net/core/netpoll.c
View File

@ -88,7 +88,7 @@ static int checksum_udp(struct sk_buff *skb, struct udphdr *uh,
psum = csum_tcpudp_nofold(saddr, daddr, ulen, IPPROTO_UDP, 0);
if (skb->ip_summed == CHECKSUM_COMPLETE &&
!(u16)csum_fold(csum_add(psum, skb->csum)))
!csum_fold(csum_add(psum, skb->csum)))
return 0;
skb->csum = psum;

4
net/core/skbuff.c
View File

@ -1396,7 +1396,7 @@ unsigned int skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to)
{
unsigned int csum;
__wsum csum;
long csstart;
if (skb->ip_summed == CHECKSUM_PARTIAL)
@ -1416,7 +1416,7 @@ void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to)
if (skb->ip_summed == CHECKSUM_PARTIAL) {
long csstuff = csstart + skb->csum;
*((unsigned short *)(to + csstuff)) = csum_fold(csum);
*((__sum16 *)(to + csstuff)) = csum_fold(csum);
}
}

4
net/ipv4/icmp.c
View File

@ -356,7 +356,7 @@ static void icmp_push_reply(struct icmp_bxm *icmp_param,
ip_flush_pending_frames(icmp_socket->sk);
else if ((skb = skb_peek(&icmp_socket->sk->sk_write_queue)) != NULL) {
struct icmphdr *icmph = skb->h.icmph;
unsigned int csum = 0;
__wsum csum = 0;
struct sk_buff *skb1;
skb_queue_walk(&icmp_socket->sk->sk_write_queue, skb1) {
@ -931,7 +931,7 @@ int icmp_rcv(struct sk_buff *skb)
switch (skb->ip_summed) {
case CHECKSUM_COMPLETE:
if (!(u16)csum_fold(skb->csum))
if (!csum_fold(skb->csum))
break;
/* fall through */
case CHECKSUM_NONE:

2
net/ipv4/igmp.c
View File

@ -932,7 +932,7 @@ int igmp_rcv(struct sk_buff *skb)
switch (skb->ip_summed) {
case CHECKSUM_COMPLETE:
if (!(u16)csum_fold(skb->csum))
if (!csum_fold(skb->csum))
break;
/* fall through */
case CHECKSUM_NONE:

4
net/ipv4/ip_gre.c
View File

@ -557,7 +557,7 @@ static int ipgre_rcv(struct sk_buff *skb)
struct iphdr *iph;
u8 *h;
__be16 flags;
u16 csum = 0;
__sum16 csum = 0;
__be32 key = 0;
u32 seqno = 0;
struct ip_tunnel *tunnel;
@ -580,7 +580,7 @@ static int ipgre_rcv(struct sk_buff *skb)
if (flags&GRE_CSUM) {
switch (skb->ip_summed) {
case CHECKSUM_COMPLETE:
csum = (u16)csum_fold(skb->csum);
csum = csum_fold(skb->csum);
if (!csum)
break;
/* fall through */

2
net/ipv4/ip_output.c
View File

@ -1384,7 +1384,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
&ipc, rt, MSG_DONTWAIT);
if ((skb = skb_peek(&sk->sk_write_queue)) != NULL) {
if (arg->csumoffset >= 0)
*((u16 *)skb->h.raw + arg->csumoffset) = csum_fold(csum_add(skb->csum, arg->csum));
*((__sum16 *)skb->h.raw + arg->csumoffset) = csum_fold(csum_add(skb->csum, arg->csum));
skb->ip_summed = CHECKSUM_NONE;
ip_push_pending_frames(sk);
}

2
net/ipv4/ipmr.c
View File

@ -1493,7 +1493,7 @@ static int pim_rcv(struct sk_buff * skb)
if (pim->type != ((PIM_VERSION<<4)|(PIM_REGISTER)) ||
(pim->flags&PIM_NULL_REGISTER) ||
(ip_compute_csum((void *)pim, sizeof(*pim)) != 0 &&
(u16)csum_fold(skb_checksum(skb, 0, skb->len, 0))))
csum_fold(skb_checksum(skb, 0, skb->len, 0))))
goto drop;
/* check if the inner packet is destined to mcast group */

2
net/ipv4/ipvs/ip_vs_core.c
View File

@ -538,7 +538,7 @@ static unsigned int ip_vs_post_routing(unsigned int hooknum,
u16 ip_vs_checksum_complete(struct sk_buff *skb, int offset)
{
return (u16) csum_fold(skb_checksum(skb, offset, skb->len - offset, 0));
return csum_fold(skb_checksum(skb, offset, skb->len - offset, 0));
}
static inline struct sk_buff *

2
net/ipv4/netfilter.c
View File

@ -172,7 +172,7 @@ unsigned int nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
case CHECKSUM_COMPLETE:
if (hook != NF_IP_PRE_ROUTING && hook != NF_IP_LOCAL_IN)
break;
if ((protocol == 0 && !(u16)csum_fold(skb->csum)) ||
if ((protocol == 0 && !csum_fold(skb->csum)) ||
!csum_tcpudp_magic(iph->saddr, iph->daddr,
skb->len - dataoff, protocol,
skb->csum)) {

8
net/ipv4/tcp.c
View File

@ -2162,7 +2162,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
struct tcphdr *th;
unsigned thlen;
unsigned int seq;
unsigned int delta;
__be32 delta;
unsigned int oldlen;
unsigned int len;
@ -2215,7 +2215,8 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
do {
th->fin = th->psh = 0;
th->check = ~csum_fold(th->check + delta);
th->check = ~csum_fold((__force __wsum)((__force u32)th->check +
(__force u32)delta));
if (skb->ip_summed != CHECKSUM_PARTIAL)
th->check = csum_fold(csum_partial(skb->h.raw, thlen,
skb->csum));
@ -2229,7 +2230,8 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
} while (skb->next);
delta = htonl(oldlen + (skb->tail - skb->h.raw) + skb->data_len);
th->check = ~csum_fold(th->check + delta);
th->check = ~csum_fold((__force __wsum)((__force u32)th->check +
(__force u32)delta));
if (skb->ip_summed != CHECKSUM_PARTIAL)
th->check = csum_fold(csum_partial(skb->h.raw, thlen,
skb->csum));

2
net/sunrpc/socklib.c
View File

@ -166,7 +166,7 @@ int csum_partial_copy_to_xdr(struct xdr_buf *xdr, struct sk_buff *skb)
}
if (desc.count)
return -1;
if ((unsigned short)csum_fold(desc.csum))
if (csum_fold(desc.csum))
return -1;
if (unlikely(skb->ip_summed == CHECKSUM_COMPLETE))
netdev_rx_csum_fault(skb->dev);