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opengnsys_ipxe
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Update to use POSIX-like API.

pull/1/head
Michael Brown 2006-04-25 12:04:07 +00:00
parent face774c4c
commit 00a1de964d
1 changed files with 8 additions and 19 deletions
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27
src/net/pkbuff.c
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@ -17,7 +17,7 @@
*/ */
#include <stdint.h> #include <stdint.h>
#include <gpxe/malloc.h> #include <malloc.h>
#include <gpxe/pkbuff.h> #include <gpxe/pkbuff.h>
/** @file /** @file
@ -31,35 +31,24 @@
* *
* @v len Required length of buffer * @v len Required length of buffer
* @ret pkb Packet buffer, or NULL if none available * @ret pkb Packet buffer, or NULL if none available
*
* The packet buffer will be aligned as per gmalloc().
*/ */
struct pk_buff * alloc_pkb ( size_t len ) { struct pk_buff * alloc_pkb ( size_t len ) {
struct pk_buff *pkb = NULL; struct pk_buff *pkb = NULL;
void *data;
/* Align buffer length */
len = ( len + __alignof__ ( *pkb ) - 1 ) & ~ __alignof__ ( *pkb );
/* Allocate memory for buffer plus descriptor */ /* Allocate memory for buffer plus descriptor */
data = gmalloc ( len + sizeof ( *pkb ) ); pkb = malloc ( sizeof ( *pkb ) + len );
if ( ! data ) if ( pkb ) {
return NULL; pkb->head = pkb->data = pkb->tail = ( void * ) ( pkb + 1 );
pkb->end = pkb->head + len;
pkb = ( struct pk_buff * ) ( data + len ); }
pkb->head = pkb->data = pkb->tail = data;
pkb->end = pkb;
return pkb; return pkb;
} }
/** /**
* Free packet buffer * Free packet buffer
* *
* @v pkb Packet buffer * @v pkb Packet buffer, or NULL
*/ */
void free_pkb ( struct pk_buff *pkb ) { void free_pkb ( struct pk_buff *pkb ) {
if ( pkb ) { free ( pkb );
gfree ( pkb->head,
( pkb->end - pkb->head ) + sizeof ( *pkb ) );
}
} }