Date: Sun, 18 Feb 1996 20:00:52 +0100 (MET) From: Andreas Klemm <andreas@knobel.gun.de> To: nao@sbl.cl.nec.co.jp (Naoki Hamada) Cc: hackers@freebsd.org, current@freebsd.org Subject: Re: mbuf enhancement patch Message-ID: <199602181900.UAA02120@knobel.gun.de> In-Reply-To: <199602151344.WAA16411@sirius.sbl.cl.nec.co.jp> from "Naoki Hamada" at Feb 15, 96 10:44:13 pm
next in thread | previous in thread | raw e-mail | index | archive | help
>
>
> Hello, guys!
>
> I found mbuf's are not buffered though mclusters are. So here is my
> patch for /sys/sys/mbuf.h. This seems to provide me slightly good
> network performance.
Did one of the core team members accept these patches
officially ?! Will they go into -current ?
Andreas ///
>
> -nao
>
> --- mbuf.h.orig Thu Feb 15 20:48:22 1996
> +++ mbuf.h Thu Feb 15 21:35:27 1996
> @@ -165,6 +165,8 @@
> /*
> * mbuf allocation/deallocation macros:
> *
> + * MMALLOC(struct mbuf *m, int how, int type)
> + * allocates an mbuf.
> * MGET(struct mbuf *m, int how, int type)
> * allocates an mbuf and initializes it to contain internal data.
> *
> @@ -172,8 +174,18 @@
> * allocates an mbuf and initializes it to contain a packet header
> * and internal data.
> */
> +#define MMALLOC(m, how, type) \
> + MBUFLOCK( \
> + if (mfree == 0) {\
> + MALLOC((m), struct mbuf *, MSIZE, mbtypes[type], (how)); \
> + } else { \
> + (m) = mfree; \
> + mfree = (m)->m_next; \
> + } \
> + )
> +
> #define MGET(m, how, type) { \
> - MALLOC((m), struct mbuf *, MSIZE, mbtypes[type], (how)); \
> + MMALLOC((m), (how), (type)); \
> if (m) { \
> (m)->m_type = (type); \
> MBUFLOCK(mbstat.m_mtypes[type]++;) \
> @@ -186,7 +198,7 @@
> }
>
> #define MGETHDR(m, how, type) { \
> - MALLOC((m), struct mbuf *, MSIZE, mbtypes[type], (how)); \
> + MMALLOC((m), (how), (type)); \
> if (m) { \
> (m)->m_type = (type); \
> MBUFLOCK(mbstat.m_mtypes[type]++;) \
> @@ -270,7 +282,10 @@
> MCLFREE((m)->m_ext.ext_buf); \
> } \
> (nn) = (m)->m_next; \
> - FREE((m), mbtypes[(m)->m_type]); \
> + MBUFLOCK ( \
> + (m)->m_next = mfree; \
> + mfree = (m); \
> + ) \
> }
> #endif
>
> @@ -358,6 +373,7 @@
> };
>
> #ifdef KERNEL
> +struct mbuf *mfree;
> extern struct mbuf *mbutl; /* virtual address of mclusters */
> extern char *mclrefcnt; /* cluster reference counts */
> struct mbstat mbstat;
>
--
andreas@knobel.gun.de /\/\___ Wiechers & Partner Datentechnik GmbH
Andreas Klemm ___/\/\/ $$ Support Unix - aklemm@wup.de $$
pgp p-key http://www-swiss.ai.mit.edu/~bal/pks-toplev.html >>> powered by <<<
ftp://sunsite.unc.edu/pub/Linux/system/Printing/aps-491.tgz >>> FreeBSD <<<
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199602181900.UAA02120>