d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Shorten list of arguments to mbuf external storage freeing function.

Browse Source 
All of these arguments are stored in m_ext, so there is no reason
to pass them in the argument list.  Not all functions need the second
argument, some don't even need the first one.  The second argument
lives in next cache line, so not dereferencing it is a performance
gain.  This was discovered in sendfile(2), which will be covered by
next commits.

The second goal of this commit is to bring even more flexibility
to m_ext mbufs, allowing to create more fields in m_ext, opaque to
the generic mbuf code, and potentially set and dereferenced by
subsystems.

Reviewed by:	gallatin, kbowling
Differential Revision:	https://reviews.freebsd.org/D12615
This commit is contained in:
Gleb Smirnoff 2017-10-09 20:35:31 +00:00
parent 32b413d7f0
commit e8fd18f306
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=324446
19 changed files with 89 additions and 130 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
share/man/man9/mbpool.9
View File

@ -27,7 +27,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd July 15, 2003
.Dd September 27, 2017
.Dt MBPOOL 9
.Os
.Sh NAME
@ -50,7 +50,7 @@
.Ft void
.Fn mbp_free "struct mbpool *mbp" "void *p"
.Ft void
.Fn mbp_ext_free "void *" "void *"
.Fn mbp_ext_free "struct mbuf *"
.Ft void
.Fn mbp_card_free "struct mbpool *mbp"
.Ft void
@ -223,8 +223,6 @@ The function
can be given to
.Fn m_extadd
as the free function.
The user argument must be the pointer to
the pool.
.Pp
Before using the contents of a buffer returned by the card, the driver
must call

17
share/man/man9/mbuf.9
View File

@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd October 10, 2016
.Dd September 27, 2017
.Dt MBUF 9
.Os
.\"
@ -44,12 +44,12 @@
.Fn MCLGET "struct mbuf *mbuf" "int how"
.Fo MEXTADD
.Fa "struct mbuf *mbuf"
.Fa "caddr_t buf"
.Fa "char *buf"
.Fa "u_int size"
.Fa "void (*free)(void *opt_arg1, void *opt_arg2)"
.Fa "void (*free)(struct mbuf *)"
.Fa "void *opt_arg1"
.Fa "void *opt_arg2"
.Fa "short flags"
.Fa "int flags"
.Fa "int type"
.Fc
.\"
@ -416,8 +416,13 @@ The
.Fa opt_arg1
and
.Fa opt_arg2
arguments will be passed unmodified to
.Fa free .
arguments will be saved in
.Va ext_arg1
and
.Va ext_arg2
fields of the
.Va struct m_ext
of the mbuf.
The
.Fa flags
argument specifies additional

21
sys/compat/ndis/kern_ndis.c
View File

@ -495,17 +495,21 @@ ndis_return(dobj, arg)
KeReleaseSpinLock(&block->nmb_returnlock, irql);
}
void
ndis_return_packet(struct mbuf *m, void *buf, void *arg)
static void
ndis_ext_free(struct mbuf *m)
{
return (ndis_return_packet(m->m_ext.ext_arg1));
}
void
ndis_return_packet(ndis_packet *p)
{
ndis_packet *p;
ndis_miniport_block *block;
if (arg == NULL)
if (p == NULL)
return;
p = arg;
/* Decrement refcount. */
p->np_refcnt--;
@ -676,9 +680,8 @@ ndis_ptom(m0, p)
return (ENOBUFS);
}
m->m_len = MmGetMdlByteCount(buf);
m->m_data = MmGetMdlVirtualAddress(buf);
MEXTADD(m, m->m_data, m->m_len, ndis_return_packet,
m->m_data, p, 0, EXT_NDIS);
m_extadd(m, MmGetMdlVirtualAddress(buf), m->m_len,
ndis_ext_free, p, NULL, 0, EXT_NDIS);
p->np_refcnt++;
totlen += m->m_len;

2
sys/compat/ndis/ndis_var.h
View File

@ -1743,7 +1743,7 @@ extern int ndis_halt_nic(void *);
extern int ndis_shutdown_nic(void *);
extern int ndis_pnpevent_nic(void *, int);
extern int ndis_init_nic(void *);
extern void ndis_return_packet(struct mbuf *, void *, void *);
extern void ndis_return_packet(ndis_packet *);
extern int ndis_init_dma(void *);
extern int ndis_destroy_dma(void *);
extern int ndis_create_sysctls(void *);

42
sys/dev/cas/if_cas.c
View File

@ -133,7 +133,7 @@ static void cas_detach(struct cas_softc *sc);
static int cas_disable_rx(struct cas_softc *sc);
static int cas_disable_tx(struct cas_softc *sc);
static void cas_eint(struct cas_softc *sc, u_int status);
static void cas_free(struct mbuf *m, void *arg1, void* arg2);
static void cas_free(struct mbuf *m);
static void cas_init(void *xsc);
static void cas_init_locked(struct cas_softc *sc);
static void cas_init_regs(struct cas_softc *sc);
@ -1732,16 +1732,10 @@ cas_rint(struct cas_softc *sc)
refcount_acquire(&rxds->rxds_refcount);
bus_dmamap_sync(sc->sc_rdmatag,
rxds->rxds_dmamap, BUS_DMASYNC_POSTREAD);
#if __FreeBSD_version < 800016
MEXTADD(m, (caddr_t)rxds->rxds_buf +
off * 256 + ETHER_ALIGN, len, cas_free,
rxds, M_RDONLY, EXT_NET_DRV);
#else
MEXTADD(m, (caddr_t)rxds->rxds_buf +
m_extadd(m, (char *)rxds->rxds_buf +
off * 256 + ETHER_ALIGN, len, cas_free,
sc, (void *)(uintptr_t)idx,
M_RDONLY, EXT_NET_DRV);
#endif
if ((m->m_flags & M_EXT) == 0) {
m_freem(m);
m = NULL;
@ -1779,16 +1773,10 @@ cas_rint(struct cas_softc *sc)
m->m_len = min(CAS_PAGE_SIZE - off, len);
bus_dmamap_sync(sc->sc_rdmatag,
rxds->rxds_dmamap, BUS_DMASYNC_POSTREAD);
#if __FreeBSD_version < 800016
MEXTADD(m, (caddr_t)rxds->rxds_buf + off,
m->m_len, cas_free, rxds, M_RDONLY,
EXT_NET_DRV);
#else
MEXTADD(m, (caddr_t)rxds->rxds_buf + off,
m_extadd(m, (char *)rxds->rxds_buf + off,
m->m_len, cas_free, sc,
(void *)(uintptr_t)idx, M_RDONLY,
EXT_NET_DRV);
#endif
if ((m->m_flags & M_EXT) == 0) {
m_freem(m);
m = NULL;
@ -1818,19 +1806,11 @@ cas_rint(struct cas_softc *sc)
sc->sc_rdmatag,
rxds2->rxds_dmamap,
BUS_DMASYNC_POSTREAD);
#if __FreeBSD_version < 800016
MEXTADD(m2,
(caddr_t)rxds2->rxds_buf,
m2->m_len, cas_free,
rxds2, M_RDONLY,
EXT_NET_DRV);
#else
MEXTADD(m2,
(caddr_t)rxds2->rxds_buf,
m_extadd(m2,
(char *)rxds2->rxds_buf,
m2->m_len, cas_free, sc,
(void *)(uintptr_t)idx2,
M_RDONLY, EXT_NET_DRV);
#endif
if ((m2->m_flags & M_EXT) ==
0) {
m_freem(m2);
@ -1889,21 +1869,15 @@ cas_rint(struct cas_softc *sc)
}
static void
cas_free(struct mbuf *m, void *arg1, void *arg2)
cas_free(struct mbuf *m)
{
struct cas_rxdsoft *rxds;
struct cas_softc *sc;
u_int idx, locked;
#if __FreeBSD_version < 800016
rxds = arg2;
sc = rxds->rxds_sc;
idx = rxds->rxds_idx;
#else
sc = arg1;
idx = (uintptr_t)arg2;
sc = m->m_ext.ext_arg1;
idx = (uintptr_t)m->m_ext.ext_arg2;
rxds = &sc->sc_rxdsoft[idx];
#endif
if (refcount_release(&rxds->rxds_refcount) == 0)
return;

15
sys/dev/cas/if_casvar.h
View File

@ -119,10 +119,6 @@ struct cas_rxdsoft {
void *rxds_buf; /* receive buffer */
bus_dmamap_t rxds_dmamap; /* our DMA map */
bus_addr_t rxds_paddr; /* physical address of the segment */
#if __FreeBSD_version < 800016
struct cas_softc *rxds_sc; /* softc pointer */
u_int rxds_idx; /* our index */
#endif
u_int rxds_refcount; /* hardware + mbuf references */
};
@ -239,18 +235,7 @@ do { \
__CAS_UPDATE_RXDESC(&(sc)->sc_rxdescs[(d)], \
&(sc)->sc_rxdsoft[(s)], (s))
#if __FreeBSD_version < 800016
#define CAS_INIT_RXDESC(sc, d, s) \
do { \
struct cas_rxdsoft *__rxds = &(sc)->sc_rxdsoft[(s)]; \
\
__rxds->rxds_sc = (sc); \
__rxds->rxds_idx = (s); \
__CAS_UPDATE_RXDESC(&(sc)->sc_rxdescs[(d)], __rxds, (s)); \
} while (0)
#else
#define CAS_INIT_RXDESC(sc, d, s) CAS_UPDATE_RXDESC(sc, d, s)
#endif
#define CAS_LOCK_INIT(_sc, _name) \
mtx_init(&(_sc)->sc_mtx, _name, MTX_NETWORK_LOCK, MTX_DEF)

6
sys/dev/cxgbe/t4_sge.c
View File

@ -1670,10 +1670,10 @@ cl_metadata(struct adapter *sc, struct sge_fl *fl, struct cluster_layout *cll,
}
static void
rxb_free(struct mbuf *m, void *arg1, void *arg2)
rxb_free(struct mbuf *m)
{
uma_zone_t zone = arg1;
caddr_t cl = arg2;
uma_zone_t zone = m->m_ext.ext_arg1;
void *cl = m->m_ext.ext_arg2;
uma_zfree(zone, cl);
counter_u64_add(extfree_rels, 1);

4
sys/dev/cxgbe/tom/t4_cpl_io.c
View File

@ -1979,9 +1979,9 @@ free_aiotx_buffer(struct aiotx_buffer *ab)
}
static void
t4_aiotx_mbuf_free(struct mbuf *m, void *buffer, void *arg)
t4_aiotx_mbuf_free(struct mbuf *m)
{
struct aiotx_buffer *ab = buffer;
struct aiotx_buffer *ab = m->m_ext.ext_arg1;
#ifdef VERBOSE_TRACES
CTR3(KTR_CXGBE, "%s: completed %d bytes for tid %d", __func__,

6
sys/dev/dpaa/if_dtsec_rm.c
View File

@ -337,11 +337,13 @@ dtsec_rm_pool_rx_init(struct dtsec_softc *sc)
* @{
*/
static void
dtsec_rm_fqr_mext_free(struct mbuf *m, void *buffer, void *arg)
dtsec_rm_fqr_mext_free(struct mbuf *m)
{
struct dtsec_softc *sc;
void *buffer;
sc = arg;
buffer = m->m_ext.ext_arg1;
sc = m->m_ext.ext_arg2;
if (bman_count(sc->sc_rx_pool) <= DTSEC_RM_POOL_RX_MAX_SIZE)
bman_put_buffer(sc->sc_rx_pool, buffer);
else

4
sys/dev/if_ndis/if_ndis.c
View File

@ -1418,7 +1418,7 @@ ndis_rxeof(adapter, packets, pktcnt)
p = packets[i];
if (p->np_oob.npo_status == NDIS_STATUS_SUCCESS) {
p->np_refcnt++;
(void)ndis_return_packet(NULL ,p, block);
ndis_return_packet(p);
}
}
return;
@ -1431,7 +1431,7 @@ ndis_rxeof(adapter, packets, pktcnt)
if (ndis_ptom(&m0, p)) {
device_printf(sc->ndis_dev, "ptom failed\n");
if (p->np_oob.npo_status == NDIS_STATUS_SUCCESS)
(void)ndis_return_packet(NULL, p, block);
ndis_return_packet(p);
} else {
#ifdef notdef
if (p->np_oob.npo_status == NDIS_STATUS_RESOURCES) {

14
sys/dev/iscsi_initiator/isc_soc.c
View File

@ -70,12 +70,13 @@ static int ou_refcnt = 0;
| function for freeing external storage for mbuf
*/
static void
ext_free(struct mbuf *m, void *a, void *b)
ext_free(struct mbuf *m)
{
pduq_t *pq = b;
pduq_t *pq = m->m_ext.ext_arg1;
if(pq->buf != NULL) {
debug(3, "ou_refcnt=%d a=%p b=%p", ou_refcnt, a, pq->buf);
debug(3, "ou_refcnt=%d a=%p b=%p",
ou_refcnt, m->m_ext.ext_buf, pq->buf);
free(pq->buf, M_ISCSIBUF);
pq->buf = NULL;
}
@ -137,11 +138,8 @@ isc_sendPDU(isc_session_t *sp, pduq_t *pq)
md->m_ext.ext_cnt = &ou_refcnt;
l = min(MCLBYTES, len);
debug(4, "setting ext_free(arg=%p len/l=%d/%d)", pq->buf, len, l);
MEXTADD(md, pp->ds_addr + off, l, ext_free,
#if __FreeBSD_version >= 800000
pp->ds_addr + off,
#endif
pq, 0, EXT_EXTREF);
m_extadd(md, pp->ds_addr + off, l, ext_free, pq, NULL, 0,
EXT_EXTREF);
md->m_len = l;
md->m_next = NULL;
mh->m_pkthdr.len += l;

15
sys/dev/lge/if_lge.c
View File

@ -123,7 +123,7 @@ static int lge_detach(device_t);
static int lge_alloc_jumbo_mem(struct lge_softc *);
static void lge_free_jumbo_mem(struct lge_softc *);
static void *lge_jalloc(struct lge_softc *);
static void lge_jfree(struct mbuf *, void *, void *);
static void lge_jfree(struct mbuf *);
static int lge_newbuf(struct lge_softc *, struct lge_rx_desc *, struct mbuf *);
static int lge_encap(struct lge_softc *, struct mbuf *, u_int32_t *);
@ -689,7 +689,7 @@ lge_newbuf(sc, c, m)
struct mbuf *m;
{
struct mbuf *m_new = NULL;
caddr_t *buf = NULL;
char *buf = NULL;
if (m == NULL) {
MGETHDR(m_new, M_NOWAIT, MT_DATA);
@ -710,10 +710,9 @@ lge_newbuf(sc, c, m)
return(ENOBUFS);
}
/* Attach the buffer to the mbuf */
m_new->m_data = (void *)buf;
m_new->m_len = m_new->m_pkthdr.len = LGE_JUMBO_FRAMELEN;
MEXTADD(m_new, buf, LGE_JUMBO_FRAMELEN, lge_jfree,
buf, (struct lge_softc *)sc, 0, EXT_NET_DRV);
m_extadd(m_new, buf, LGE_JUMBO_FRAMELEN, lge_jfree, sc, NULL,
0, EXT_NET_DRV);
} else {
m_new = m;
m_new->m_len = m_new->m_pkthdr.len = LGE_JUMBO_FRAMELEN;
@ -848,20 +847,20 @@ lge_jalloc(sc)
* Release a jumbo buffer.
*/
static void
lge_jfree(struct mbuf *m, void *buf, void *args)
lge_jfree(struct mbuf *m)
{
struct lge_softc *sc;
int i;
struct lge_jpool_entry *entry;
/* Extract the softc struct pointer. */
sc = args;
sc = m->m_ext.ext_arg1;
if (sc == NULL)
panic("lge_jfree: can't find softc pointer!");
/* calculate the slot this buffer belongs to */
i = ((vm_offset_t)buf
i = ((vm_offset_t)m->m_ext.ext_buf
- (vm_offset_t)sc->lge_cdata.lge_jumbo_buf) / LGE_JLEN;
if ((i < 0) || (i >= LGE_JSLOTS))

10
sys/dev/mwl/if_mwl.c
View File

@ -2522,12 +2522,12 @@ mwl_rxbuf_init(struct mwl_softc *sc, struct mwl_rxbuf *bf)
}
static void
mwl_ext_free(struct mbuf *m, void *data, void *arg)
mwl_ext_free(struct mbuf *m)
{
struct mwl_softc *sc = arg;
struct mwl_softc *sc = m->m_ext.ext_arg1;
/* XXX bounds check data */
mwl_putrxdma(sc, data);
mwl_putrxdma(sc, m->m_ext.ext_buf);
/*
* If we were previously blocked by a lack of rx dma buffers
* check if we now have enough to restart rx interrupt handling.
@ -2746,8 +2746,8 @@ mwl_rx_proc(void *arg, int npending)
* descriptor using the replacement dma
* buffer we just installed above.
*/
MEXTADD(m, data, MWL_AGGR_SIZE, mwl_ext_free,
data, sc, 0, EXT_NET_DRV);
m_extadd(m, data, MWL_AGGR_SIZE, mwl_ext_free, sc, NULL, 0,
EXT_NET_DRV);
m->m_data += off - hdrlen;
m->m_pkthdr.len = m->m_len = pktlen;
/* NB: dma buffer assumed read-only */

4
sys/dev/netmap/netmap_generic.c
View File

@ -166,7 +166,7 @@ nm_os_get_mbuf(struct ifnet *ifp, int len)
* has a KASSERT(), checking that the mbuf dtor function is not NULL.
*/
static void void_mbuf_dtor(struct mbuf *m, void *arg1, void *arg2) { }
static void void_mbuf_dtor(struct mbuf *m) { }
#define SET_MBUF_DESTRUCTOR(m, fn) do { \
(m)->m_ext.ext_free = (fn != NULL) ? \
@ -624,7 +624,7 @@ generic_mbuf_destructor(struct mbuf *m)
* txsync. */
netmap_generic_irq(na, r, NULL);
#ifdef __FreeBSD__
void_mbuf_dtor(m, NULL, NULL);
void_mbuf_dtor(m);
#endif
}

9
sys/dev/wb/if_wb.c
View File

@ -143,7 +143,7 @@ static int wb_probe(device_t);
static int wb_attach(device_t);
static int wb_detach(device_t);
static void wb_bfree(struct mbuf *, void *addr, void *args);
static void wb_bfree(struct mbuf *);
static int wb_newbuf(struct wb_softc *, struct wb_chain_onefrag *,
struct mbuf *);
static int wb_encap(struct wb_softc *, struct wb_chain *, struct mbuf *);
@ -824,7 +824,7 @@ wb_list_rx_init(sc)
}
static void
wb_bfree(struct mbuf *m, void *buf, void *args)
wb_bfree(struct mbuf *m)
{
}
@ -843,10 +843,9 @@ wb_newbuf(sc, c, m)
MGETHDR(m_new, M_NOWAIT, MT_DATA);
if (m_new == NULL)
return(ENOBUFS);
m_new->m_data = c->wb_buf;
m_new->m_pkthdr.len = m_new->m_len = WB_BUFBYTES;
MEXTADD(m_new, c->wb_buf, WB_BUFBYTES, wb_bfree, c->wb_buf,
NULL, 0, EXT_NET_DRV);
m_extadd(m_new, c->wb_buf, WB_BUFBYTES, wb_bfree, NULL, NULL,
0, EXT_NET_DRV);
} else {
m_new = m;
m_new->m_len = m_new->m_pkthdr.len = WB_BUFBYTES;

13
sys/kern/kern_mbuf.c
View File

@ -504,7 +504,7 @@ mb_ctor_clust(void *mem, int size, void *arg, int how)
#endif
m = (struct mbuf *)arg;
if (m != NULL) {
m->m_ext.ext_buf = (caddr_t)mem;
m->m_ext.ext_buf = (char *)mem;
m->m_data = m->m_ext.ext_buf;
m->m_flags |= M_EXT;
m->m_ext.ext_free = NULL;
@ -688,15 +688,13 @@ mb_free_ext(struct mbuf *m)
case EXT_DISPOSABLE:
KASSERT(m->m_ext.ext_free != NULL,
("%s: ext_free not set", __func__));
(*(m->m_ext.ext_free))(m, m->m_ext.ext_arg1,
m->m_ext.ext_arg2);
m->m_ext.ext_free(m);
uma_zfree(zone_mbuf, mref);
break;
case EXT_EXTREF:
KASSERT(m->m_ext.ext_free != NULL,
("%s: ext_free not set", __func__));
(*(m->m_ext.ext_free))(m, m->m_ext.ext_arg1,
m->m_ext.ext_arg2);
m->m_ext.ext_free(m);
break;
default:
KASSERT(m->m_ext.ext_type == 0,
@ -918,9 +916,8 @@ m_getm2(struct mbuf *m, int len, int how, short type, int flags)
* Nothing.
*/
void
m_extadd(struct mbuf *mb, caddr_t buf, u_int size,
void (*freef)(struct mbuf *, void *, void *), void *arg1, void *arg2,
int flags, int type)
m_extadd(struct mbuf *mb, char *buf, u_int size, m_ext_free_t freef,
void *arg1, void *arg2, int flags, int type)
{
KASSERT(type != EXT_CLUSTER, ("%s: EXT_CLUSTER not allowed", __func__));

4
sys/kern/subr_mbpool.c
View File

@ -281,10 +281,10 @@ mbp_free(struct mbpool *p, void *ptr)
* Mbuf system external mbuf free routine
*/
void
mbp_ext_free(struct mbuf *m, void *buf, void *arg)
mbp_ext_free(struct mbuf *m)
{
mbp_free(arg, buf);
mbp_free(m->m_ext.ext_arg2, m->m_ext.ext_arg1);
}
/*

2
sys/sys/mbpool.h
View File

@ -69,7 +69,7 @@ void *mbp_alloc(struct mbpool *, bus_addr_t *, uint32_t *);
void mbp_free(struct mbpool *, void *);
/* free a chunk that is an external mbuf */
void mbp_ext_free(struct mbuf *, void *, void *);
void mbp_ext_free(struct mbuf *);
/* free all buffers that are marked to be on the card */
void mbp_card_free(struct mbpool *);

25
sys/sys/mbuf.h
View File

@ -197,17 +197,17 @@ struct pkthdr {
* Compile-time assertions in uipc_mbuf.c test these values to ensure that
* they are correct.
*/
typedef void m_ext_free_t(struct mbuf *);
struct m_ext {
union {
volatile u_int ext_count; /* value of ref count info */
volatile u_int *ext_cnt; /* pointer to ref count info */
};
caddr_t ext_buf; /* start of buffer */
char *ext_buf; /* start of buffer */
uint32_t ext_size; /* size of buffer, for ext_free */
uint32_t ext_type:8, /* type of external storage */
ext_flags:24; /* external storage mbuf flags */
void (*ext_free) /* free routine if not the usual */
(struct mbuf *, void *, void *);
m_ext_free_t *ext_free; /* free routine if not the usual */
void *ext_arg1; /* optional argument pointer */
void *ext_arg2; /* optional argument pointer */
};
@ -436,10 +436,10 @@ struct mbuf {
#define EXT_FLAG_NOFREE 0x000010 /* don't free mbuf to pool, notyet */
#define EXT_FLAG_VENDOR1 0x010000 /* for vendor-internal use */
#define EXT_FLAG_VENDOR2 0x020000 /* for vendor-internal use */
#define EXT_FLAG_VENDOR3 0x040000 /* for vendor-internal use */
#define EXT_FLAG_VENDOR4 0x080000 /* for vendor-internal use */
#define EXT_FLAG_VENDOR1 0x010000 /* These flags are vendor */
#define EXT_FLAG_VENDOR2 0x020000 /* or submodule specific, */
#define EXT_FLAG_VENDOR3 0x040000 /* not used by mbuf code. */
#define EXT_FLAG_VENDOR4 0x080000 /* Set/read by submodule. */
#define EXT_FLAG_EXP1 0x100000 /* for experimental use */
#define EXT_FLAG_EXP2 0x200000 /* for experimental use */
@ -610,9 +610,8 @@ struct mbuf *m_devget(char *, int, int, struct ifnet *,
void (*)(char *, caddr_t, u_int));
struct mbuf *m_dup(const struct mbuf *, int);
int m_dup_pkthdr(struct mbuf *, const struct mbuf *, int);
void m_extadd(struct mbuf *, caddr_t, u_int,
void (*)(struct mbuf *, void *, void *), void *, void *,
int, int);
void m_extadd(struct mbuf *, char *, u_int, m_ext_free_t,
void *, void *, int, int);
u_int m_fixhdr(struct mbuf *);
struct mbuf *m_fragment(struct mbuf *, int, int);
void m_freem(struct mbuf *);
@ -667,8 +666,8 @@ m_gettype(int size)
* Associated an external reference counted buffer with an mbuf.
*/
static __inline void
m_extaddref(struct mbuf *m, caddr_t buf, u_int size, u_int *ref_cnt,
void (*freef)(struct mbuf *, void *, void *), void *arg1, void *arg2)
m_extaddref(struct mbuf *m, char *buf, u_int size, u_int *ref_cnt,
m_ext_free_t freef, void *arg1, void *arg2)
{
KASSERT(ref_cnt != NULL, ("%s: ref_cnt not provided", __func__));
@ -864,7 +863,7 @@ m_extrefcnt(struct mbuf *m)
#define MGETHDR(m, how, type) ((m) = m_gethdr((how), (type)))
#define MCLGET(m, how) m_clget((m), (how))
#define MEXTADD(m, buf, size, free, arg1, arg2, flags, type) \
m_extadd((m), (caddr_t)(buf), (size), (free), (arg1), (arg2), \
m_extadd((m), (char *)(buf), (size), (free), (arg1), (arg2), \
(flags), (type))
#define m_getm(m, len, how, type) \
m_getm2((m), (len), (how), (type), M_PKTHDR)