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Rename pkb_available() to pkb_tailroom() for consistency with Linux's

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skb_tailroom().  Add pkb_headroom().
This commit is contained in:
Michael Brown 2007-01-09 20:56:31 +00:00
parent b7fcfe8ece
commit 18e5353bed
4 changed files with 21 additions and 11 deletions
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4
src/arch/i386/drivers/net/undinet.c
View File

@ -437,10 +437,10 @@ static void undinet_poll ( struct net_device *netdev ) {
/* Fragment will be dropped */
goto done;
}
if ( frag_len > pkb_available ( pkb ) ) {
if ( frag_len > pkb_tailroom ( pkb ) ) {
DBGC ( undinic, "UNDINIC %p fragment too "
"large\n", undinic );
frag_len = pkb_available ( pkb );
frag_len = pkb_tailroom ( pkb );
}
copy_from_real ( pkb_put ( pkb, frag_len ),
undi_isr.Frame.segment,

16
src/include/gpxe/pkbuff.h
View File

@ -137,12 +137,22 @@ static inline size_t pkb_len ( struct pk_buff *pkb ) {
}
/**
* Calculate available space in a packet buffer
* Calculate available space at start of a packet buffer
*
* @v pkb Packet buffer
* @ret len Length of data available in buffer
* @ret len Length of data available at start of buffer
*/
static inline size_t pkb_available ( struct pk_buff *pkb ) {
static inline size_t pkb_headroom ( struct pk_buff *pkb ) {
return ( pkb->data - pkb->head );
}
/**
* Calculate available space at end of a packet buffer
*
* @v pkb Packet buffer
* @ret len Length of data available at end of buffer
*/
static inline size_t pkb_tailroom ( struct pk_buff *pkb ) {
return ( pkb->end - pkb->tail );
}

6
src/net/tcp.c
View File

@ -255,7 +255,7 @@ static int tcp_senddata_conn ( struct tcp_connection *conn, int force_send ) {
if ( TCP_CAN_SEND_DATA ( conn->tcp_state ) &&
app && app->tcp_op->senddata ) {
conn->tx_pkb = pkb;
app->tcp_op->senddata ( app, pkb->data, pkb_available ( pkb ));
app->tcp_op->senddata ( app, pkb->data, pkb_tailroom ( pkb ) );
conn->tx_pkb = NULL;
}
@ -364,8 +364,8 @@ int tcp_send ( struct tcp_application *app, const void *data, size_t len ) {
}
/* Truncate length to fit packet buffer */
if ( len > pkb_available ( pkb ) )
len = pkb_available ( pkb );
if ( len > pkb_tailroom ( pkb ) )
len = pkb_tailroom ( pkb );
/* Copy payload */
memmove ( pkb_put ( pkb, len ), data, len );

6
src/net/udp.c
View File

@ -104,7 +104,7 @@ int udp_senddata ( struct udp_connection *conn ) {
}
pkb_reserve ( conn->tx_pkb, UDP_MAX_HLEN );
rc = conn->udp_op->senddata ( conn, conn->tx_pkb->data,
pkb_available ( conn->tx_pkb ) );
pkb_tailroom ( conn->tx_pkb ) );
if ( conn->tx_pkb )
free_pkb ( conn->tx_pkb );
return rc;
@ -137,8 +137,8 @@ int udp_sendto ( struct udp_connection *conn, struct sockaddr_tcpip *peer,
conn->tx_pkb = NULL;
/* Avoid overflowing TX buffer */
if ( len > pkb_available ( pkb ) )
len = pkb_available ( pkb );
if ( len > pkb_tailroom ( pkb ) )
len = pkb_tailroom ( pkb );
/* Copy payload */
memmove ( pkb_put ( pkb, len ), data, len );