diff options
| -rw-r--r-- | sys/kern/subr_mbuf.c | 11 | ||||
| -rw-r--r-- | sys/sys/mbuf.h | 1 |
2 files changed, 9 insertions, 3 deletions
diff --git a/sys/kern/subr_mbuf.c b/sys/kern/subr_mbuf.c index 02ad99a..21e1a40 100644 --- a/sys/kern/subr_mbuf.c +++ b/sys/kern/subr_mbuf.c @@ -1062,7 +1062,8 @@ mb_reclaim(void) (((uintptr_t)(cl) - (uintptr_t)cl_refcntmap) >> MCLSHIFT) #define _mext_dealloc_ref(m) \ - free((m)->m_ext.ref_cnt, M_MBUF) + if ((m)->m_ext.ext_type != EXT_EXTREF) \ + free((m)->m_ext.ref_cnt, M_MBUF) /****************************************************************************** * Internal routines. @@ -1508,9 +1509,13 @@ void m_extadd(struct mbuf *mb, caddr_t buf, u_int size, void (*freef)(void *, void *), void *args, int flags, int type) { + u_int *ref_cnt = NULL; - _mext_init_ref(mb, ((type != EXT_CLUSTER) ? - NULL : &cl_refcntmap[cl2ref(mb->m_ext.ext_buf)])); + if (type == EXT_CLUSTER) + ref_cnt = &cl_refcntmap[cl2ref(mb->m_ext.ext_buf)]; + else if (type == EXT_EXTREF) + ref_cnt = mb->m_ext.ref_cnt; + _mext_init_ref(mb, ref_cnt); if (mb->m_ext.ref_cnt != NULL) { mb->m_flags |= (M_EXT | flags); mb->m_ext.ext_buf = buf; diff --git a/sys/sys/mbuf.h b/sys/sys/mbuf.h index adc4832..0ad8664 100644 --- a/sys/sys/mbuf.h +++ b/sys/sys/mbuf.h @@ -173,6 +173,7 @@ struct mbuf { #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 */ +#define EXT_EXTREF 400 /* has externally maintained ref_cnt ptr*/ /* * Flags copied when copying m_pkthdr. |
