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authorAl Viro <viro@zeniv.linux.org.uk>2020-07-10 20:07:10 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2020-08-20 15:45:13 -0400
commit8d5930dfb7edbf136f2d9900be34ca7af4ba38c1 (patch)
tree907ac83ca0b3f85725ffff737f4f96a4554dc059
parent9123e3a74ec7b934a4a099e98af6a61c2f80bbf5 (diff)
skb_copy_and_csum_bits(): don't bother with the last argument
it's always 0 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--drivers/net/ethernet/sun/sunvnet_common.c2
-rw-r--r--include/linux/skbuff.h2
-rw-r--r--net/core/skbuff.c11
-rw-r--r--net/ipv4/icmp.c2
-rw-r--r--net/ipv4/ip_output.c4
-rw-r--r--net/ipv6/icmp.c4
-rw-r--r--net/ipv6/ip6_output.c2
-rw-r--r--net/sunrpc/socklib.c2
8 files changed, 15 insertions, 14 deletions
diff --git a/drivers/net/ethernet/sun/sunvnet_common.c b/drivers/net/ethernet/sun/sunvnet_common.c
index 8dc6c9ff22e1..80fde5f06fce 100644
--- a/drivers/net/ethernet/sun/sunvnet_common.c
+++ b/drivers/net/ethernet/sun/sunvnet_common.c
@@ -1168,7 +1168,7 @@ static inline struct sk_buff *vnet_skb_shape(struct sk_buff *skb, int ncookies)
*(__sum16 *)(skb->data + offset) = 0;
csum = skb_copy_and_csum_bits(skb, start,
nskb->data + start,
- skb->len - start, 0);
+ skb->len - start);
/* add in the header checksums */
if (skb->protocol == htons(ETH_P_IP)) {
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 46881d902124..31a6d2fce071 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3535,7 +3535,7 @@ int skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags);
int skb_copy_bits(const struct sk_buff *skb, int offset, void *to, int len);
int skb_store_bits(struct sk_buff *skb, int offset, const void *from, int len);
__wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset, u8 *to,
- int len, __wsum csum);
+ int len);
int skb_splice_bits(struct sk_buff *skb, struct sock *sk, unsigned int offset,
struct pipe_inode_info *pipe, unsigned int len,
unsigned int flags);
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 7e2e502ef519..6e806da2913e 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2723,19 +2723,20 @@ EXPORT_SYMBOL(skb_checksum);
/* Both of above in one bottle. */
__wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
- u8 *to, int len, __wsum csum)
+ u8 *to, int len)
{
int start = skb_headlen(skb);
int i, copy = start - offset;
struct sk_buff *frag_iter;
int pos = 0;
+ __wsum csum = 0;
/* Copy header. */
if (copy > 0) {
if (copy > len)
copy = len;
csum = csum_partial_copy_nocheck(skb->data + offset, to,
- copy, csum);
+ copy, 0);
if ((len -= copy) == 0)
return csum;
offset += copy;
@@ -2791,7 +2792,7 @@ __wsum skb_copy_and_csum_bits(const struct sk_buff *skb, int offset,
copy = len;
csum2 = skb_copy_and_csum_bits(frag_iter,
offset - start,
- to, copy, 0);
+ to, copy);
csum = csum_block_add(csum, csum2, pos);
if ((len -= copy) == 0)
return csum;
@@ -3011,7 +3012,7 @@ void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to)
csum = 0;
if (csstart != skb->len)
csum = skb_copy_and_csum_bits(skb, csstart, to + csstart,
- skb->len - csstart, 0);
+ skb->len - csstart);
if (skb->ip_summed == CHECKSUM_PARTIAL) {
long csstuff = csstart + skb->csum_offset;
@@ -3932,7 +3933,7 @@ normal:
skb_copy_and_csum_bits(head_skb, offset,
skb_put(nskb,
len),
- len, 0);
+ len);
SKB_GSO_CB(nskb)->csum_start =
skb_headroom(nskb) + doffset;
} else {
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index cf36f955bfe6..d15f78053ef4 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -352,7 +352,7 @@ static int icmp_glue_bits(void *from, char *to, int offset, int len, int odd,
csum = skb_copy_and_csum_bits(icmp_param->skb,
icmp_param->offset + offset,
- to, len, 0);
+ to, len);
skb->csum = csum_block_add(skb->csum, csum, odd);
if (icmp_pointers[icmp_param->data.icmph.type].error)
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 61f802d5350c..5bd059853376 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -1126,7 +1126,7 @@ alloc_new_skb:
if (fraggap) {
skb->csum = skb_copy_and_csum_bits(
skb_prev, maxfraglen,
- data + transhdrlen, fraggap, 0);
+ data + transhdrlen, fraggap);
skb_prev->csum = csum_sub(skb_prev->csum,
skb->csum);
data += fraggap;
@@ -1411,7 +1411,7 @@ ssize_t ip_append_page(struct sock *sk, struct flowi4 *fl4, struct page *page,
skb->csum = skb_copy_and_csum_bits(skb_prev,
maxfraglen,
skb_transport_header(skb),
- fraggap, 0);
+ fraggap);
skb_prev->csum = csum_sub(skb_prev->csum,
skb->csum);
pskb_trim_unique(skb_prev, maxfraglen);
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index a4e4912ad607..83b251151b5c 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -314,10 +314,10 @@ static int icmpv6_getfrag(void *from, char *to, int offset, int len, int odd, st
{
struct icmpv6_msg *msg = (struct icmpv6_msg *) from;
struct sk_buff *org_skb = msg->skb;
- __wsum csum = 0;
+ __wsum csum;
csum = skb_copy_and_csum_bits(org_skb, msg->offset + offset,
- to, len, csum);
+ to, len);
skb->csum = csum_block_add(skb->csum, csum, odd);
if (!(msg->type & ICMPV6_INFOMSG_MASK))
nf_ct_attach(skb, org_skb);
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index c78e67d7747f..2689498157d1 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1615,7 +1615,7 @@ alloc_new_skb:
if (fraggap) {
skb->csum = skb_copy_and_csum_bits(
skb_prev, maxfraglen,
- data + transhdrlen, fraggap, 0);
+ data + transhdrlen, fraggap);
skb_prev->csum = csum_sub(skb_prev->csum,
skb->csum);
data += fraggap;
diff --git a/net/sunrpc/socklib.c b/net/sunrpc/socklib.c
index 3fc8af8bb961..d52313af82bc 100644
--- a/net/sunrpc/socklib.c
+++ b/net/sunrpc/socklib.c
@@ -70,7 +70,7 @@ static size_t xdr_skb_read_and_csum_bits(struct xdr_skb_reader *desc, void *to,
if (len > desc->count)
len = desc->count;
pos = desc->offset;
- csum2 = skb_copy_and_csum_bits(desc->skb, pos, to, len, 0);
+ csum2 = skb_copy_and_csum_bits(desc->skb, pos, to, len);
desc->csum = csum_block_add(desc->csum, csum2, pos);
desc->count -= len;
desc->offset += len;