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add helper functions for mapping size to zonez and types

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eliminate duplicated zone lookup switch statements
This commit is contained in:
Kip Macy 2007-04-04 00:31:49 +00:00
parent 385e723f67
commit ab43ffd2f6
1 changed files with 63 additions and 37 deletions
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100
sys/sys/mbuf.h
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@ -195,6 +195,7 @@ struct mbuf {
#define EXT_JUMBO9 4 /* jumbo cluster 9216 bytes */
#define EXT_JUMBO16 5 /* jumbo cluster 16184 bytes */
#define EXT_PACKET 6 /* mbuf+cluster from packet zone */
#define EXT_MBUF 7 /* external mbuf reference (M_IOVEC) */
#define EXT_NET_DRV 100 /* custom ext_buf provided by net driver(s) */
#define EXT_MOD_TYPE 200 /* custom module's ext_buf type */
#define EXT_DISPOSABLE 300 /* can throw this buffer away w/page flipping */
@ -345,6 +346,66 @@ static __inline void *m_cljget(struct mbuf *m, int how, int size);
static __inline void m_chtype(struct mbuf *m, short new_type);
void mb_free_ext(struct mbuf *);
static __inline int
m_gettype(int size)
{
int type;
switch (size) {
case MSIZE:
type = EXT_MBUF;
break;
case MCLBYTES:
type = EXT_CLUSTER;
break;
#if MJUMPAGESIZE != MCLBYTES
case MJUMPAGESIZE:
type = EXT_JUMBOP;
break;
#endif
case MJUM9BYTES:
type = EXT_JUMBO9;
break;
case MJUM16BYTES:
type = EXT_JUMBO16;
break;
default:
panic("%s: m_getjcl: invalid cluster size", __func__);
}
return (type);
}
static __inline uma_zone_t
m_getzone(int size)
{
uma_zone_t zone;
switch (size) {
case MSIZE:
zone = zone_mbuf;
break;
case MCLBYTES:
zone = zone_clust;
break;
#if MJUMPAGESIZE != MCLBYTES
case MJUMPAGESIZE:
zone = zone_jumbop;
break;
#endif
case MJUM9BYTES:
zone = zone_jumbo9;
break;
case MJUM16BYTES:
zone = zone_jumbo16;
break;
default:
panic("%s: m_getjcl: invalid cluster type", __func__);
}
return (zone);
}
static __inline struct mbuf *
m_get(int how, short type)
{
@ -412,24 +473,7 @@ m_getjcl(int how, short type, int flags, int size)
if (m == NULL)
return (NULL);
switch (size) {
case MCLBYTES:
zone = zone_clust;
break;
#if MJUMPAGESIZE != MCLBYTES
case MJUMPAGESIZE:
zone = zone_jumbop;
break;
#endif
case MJUM9BYTES:
zone = zone_jumbo9;
break;
case MJUM16BYTES:
zone = zone_jumbo16;
break;
default:
panic("%s: m_getjcl: invalid cluster type", __func__);
}
zone = m_getzone(size);
n = uma_zalloc_arg(zone, m, how);
if (n == NULL) {
uma_zfree(zone_mbuf, m);
@ -485,25 +529,7 @@ m_cljget(struct mbuf *m, int how, int size)
if (m != NULL)
m->m_ext.ext_buf = NULL;
switch (size) {
case MCLBYTES:
zone = zone_clust;
break;
#if MJUMPAGESIZE != MCLBYTES
case MJUMPAGESIZE:
zone = zone_jumbop;
break;
#endif
case MJUM9BYTES:
zone = zone_jumbo9;
break;
case MJUM16BYTES:
zone = zone_jumbo16;
break;
default:
panic("%s: m_getjcl: invalid cluster type", __func__);
}
zone = m_getzone(size);
return (uma_zalloc_arg(zone, m, how));
}