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authorChuck Lever <chuck.lever@oracle.com>2006-12-05 16:35:41 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-12-06 10:46:52 -0500
commit9d29231690925915015c21c1fff73c7118099843 (patch)
treeac1018a80198a7e493296f5fc8e9fbd8dac7d0f0 /net/sunrpc
parent7559c7a28fbcaa0bca028eeebd5f251b09befe6b (diff)
downloadlinux-9d29231690925915015c21c1fff73c7118099843.tar.gz
SUNRPC: skb_read_bits is the same as xs_tcp_copy_data
Clean-up: eliminate xs_tcp_copy_data -- it's exactly the same logic as the common routine skb_read_bits. The UDP and TCP socket read code now share the same routine for copying data into an xdr_buf. Now that skb_read_bits() is exported, rename it to avoid confusing it with a generic skb_* function. As these functions are XDR-specific, they should not have names that suggest they are of generic use. Also rename skb_read_and_csum_bits() to be consistent. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/socklib.c14
-rw-r--r--net/sunrpc/xprtsock.c24
2 files changed, 11 insertions, 27 deletions
diff --git a/net/sunrpc/socklib.c b/net/sunrpc/socklib.c
index 2635c543ba0..9c40d67c1ff 100644
--- a/net/sunrpc/socklib.c
+++ b/net/sunrpc/socklib.c
@@ -16,7 +16,7 @@
/**
- * skb_read_bits - copy some data bits from skb to internal buffer
+ * xdr_skb_read_bits - copy some data bits from skb to internal buffer
* @desc: sk_buff copy helper
* @to: copy destination
* @len: number of bytes to copy
@@ -24,11 +24,11 @@
* Possibly called several times to iterate over an sk_buff and copy
* data out of it.
*/
-static size_t skb_read_bits(skb_reader_t *desc, void *to, size_t len)
+size_t xdr_skb_read_bits(skb_reader_t *desc, void *to, size_t len)
{
if (len > desc->count)
len = desc->count;
- if (skb_copy_bits(desc->skb, desc->offset, to, len))
+ if (unlikely(skb_copy_bits(desc->skb, desc->offset, to, len)))
return 0;
desc->count -= len;
desc->offset += len;
@@ -36,14 +36,14 @@ static size_t skb_read_bits(skb_reader_t *desc, void *to, size_t len)
}
/**
- * skb_read_and_csum_bits - copy and checksum from skb to buffer
+ * xdr_skb_read_and_csum_bits - copy and checksum from skb to buffer
* @desc: sk_buff copy helper
* @to: copy destination
* @len: number of bytes to copy
*
* Same as skb_read_bits, but calculate a checksum at the same time.
*/
-static size_t skb_read_and_csum_bits(skb_reader_t *desc, void *to, size_t len)
+static size_t xdr_skb_read_and_csum_bits(skb_reader_t *desc, void *to, size_t len)
{
unsigned int pos;
__wsum csum2;
@@ -158,7 +158,7 @@ int csum_partial_copy_to_xdr(struct xdr_buf *xdr, struct sk_buff *skb)
goto no_checksum;
desc.csum = csum_partial(skb->data, desc.offset, skb->csum);
- if (xdr_partial_copy_from_skb(xdr, 0, &desc, skb_read_and_csum_bits) < 0)
+ if (xdr_partial_copy_from_skb(xdr, 0, &desc, xdr_skb_read_and_csum_bits) < 0)
return -1;
if (desc.offset != skb->len) {
__wsum csum2;
@@ -173,7 +173,7 @@ int csum_partial_copy_to_xdr(struct xdr_buf *xdr, struct sk_buff *skb)
netdev_rx_csum_fault(skb->dev);
return 0;
no_checksum:
- if (xdr_partial_copy_from_skb(xdr, 0, &desc, skb_read_bits) < 0)
+ if (xdr_partial_copy_from_skb(xdr, 0, &desc, xdr_skb_read_bits) < 0)
return -1;
if (desc.count)
return -1;
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index a94aff42d08..450c350a0c6 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -651,22 +651,6 @@ static void xs_udp_data_ready(struct sock *sk, int len)
read_unlock(&sk->sk_callback_lock);
}
-static inline size_t xs_tcp_copy_data(skb_reader_t *desc, void *p, size_t len)
-{
- if (len > desc->count)
- len = desc->count;
- if (skb_copy_bits(desc->skb, desc->offset, p, len)) {
- dprintk("RPC: failed to copy %zu bytes from skb. %zu bytes remain\n",
- len, desc->count);
- return 0;
- }
- desc->offset += len;
- desc->count -= len;
- dprintk("RPC: copied %zu bytes from skb. %zu bytes remain\n",
- len, desc->count);
- return len;
-}
-
static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, skb_reader_t *desc)
{
struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
@@ -675,7 +659,7 @@ static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, skb_reader_t *desc
p = ((char *) &transport->tcp_fraghdr) + transport->tcp_offset;
len = sizeof(transport->tcp_fraghdr) - transport->tcp_offset;
- used = xs_tcp_copy_data(desc, p, len);
+ used = xdr_skb_read_bits(desc, p, len);
transport->tcp_offset += used;
if (used != len)
return;
@@ -721,7 +705,7 @@ static inline void xs_tcp_read_xid(struct sock_xprt *transport, skb_reader_t *de
len = sizeof(transport->tcp_xid) - transport->tcp_offset;
dprintk("RPC: reading XID (%Zu bytes)\n", len);
p = ((char *) &transport->tcp_xid) + transport->tcp_offset;
- used = xs_tcp_copy_data(desc, p, len);
+ used = xdr_skb_read_bits(desc, p, len);
transport->tcp_offset += used;
if (used != len)
return;
@@ -761,12 +745,12 @@ static inline void xs_tcp_read_request(struct rpc_xprt *xprt, skb_reader_t *desc
memcpy(&my_desc, desc, sizeof(my_desc));
my_desc.count = len;
r = xdr_partial_copy_from_skb(rcvbuf, transport->tcp_copied,
- &my_desc, xs_tcp_copy_data);
+ &my_desc, xdr_skb_read_bits);
desc->count -= r;
desc->offset += r;
} else
r = xdr_partial_copy_from_skb(rcvbuf, transport->tcp_copied,
- desc, xs_tcp_copy_data);
+ desc, xdr_skb_read_bits);
if (r > 0) {
transport->tcp_copied += r;