Document recently-implemented m_getm().
This commit is contained in:
parent
6c9e1e9481
commit
778f80298c
@ -70,6 +70,8 @@
|
||||
.Ft struct mbuf *
|
||||
.Fn m_get "int how" "int type"
|
||||
.Ft struct mbuf *
|
||||
.Fn m_getm "struct mbuf *orig" "int len" "int how" "int type"
|
||||
.Ft struct mbuf *
|
||||
.Fn m_getclr "int how" "int type"
|
||||
.Ft struct mbuf *
|
||||
.Fn m_gethdr "int how" "int type"
|
||||
@ -333,6 +335,26 @@ The functions are:
|
||||
A function version of
|
||||
.Fn MGET
|
||||
for non-critical paths.
|
||||
.It Fn m_getm orig len how type
|
||||
Allocate
|
||||
.Ar len
|
||||
bytes worth of mbufs and mbuf clusters if necessary and append the resulting
|
||||
allocated chain to the
|
||||
.Ar orig
|
||||
mbuf chain, if it is non-NULL.
|
||||
If the allocation fails at any point,
|
||||
free whatever was allocated and return NULL.
|
||||
If
|
||||
.Ar orig
|
||||
is non-NULL,
|
||||
it will not be freed.
|
||||
It is possible to use
|
||||
.Fn m_getm
|
||||
to either append
|
||||
.Ar len
|
||||
bytes to an existing mbuf or mbuf chain
|
||||
(for example, one which may be sitting in a pre-allocated ring)
|
||||
or to simply perform an all-or-nothing mbuf and mbuf cluster allocation.
|
||||
.It Fn m_gethdr how type
|
||||
A function version of
|
||||
.Fn MGETHDR
|
||||
|
Loading…
x
Reference in New Issue
Block a user