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Cleanup comment in machine/param.h regarding mbuf-related sizes, and get rid

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of MCLOFSET, which does not appear to be used anywhere anymore, and if it is,
it probably shouldn't be.
This commit is contained in:
Bosko Milekic 2000-10-08 03:52:27 +00:00
parent 039c6f3637
commit ec222a71d9
3 changed files with 15 additions and 23 deletions
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14
sys/alpha/include/param.h
View File

@ -120,18 +120,16 @@
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than CLBYTES (the software page size), and,
* on machines that exchange pages of input or output buffers with mbuf
* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
* of the hardware page size.
* MCLBYTES must be no larger than PAGE_SIZE.
*/
#ifndef MSIZE
#define MSIZE 256 /* size of an mbuf */
#endif /* MSIZE */
#ifndef MCLSHIFT
# define MCLSHIFT 11 /* convert bytes to m_buf clusters */
/* 2K cluster can hold Ether frame */
#define MCLSHIFT 11 /* convert bytes to mbuf clusters */
#endif /* MCLSHIFT */
#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
#define MCLOFSET (MCLBYTES - 1)
#define MCLBYTES (1 << MCLSHIFT) /* size of a mbuf cluster */
/* pages ("clicks") to disk blocks */
#define ctod(x) ((x) << (PAGE_SHIFT - DEV_BSHIFT))

10
sys/i386/include/param.h
View File

@ -102,20 +102,16 @@
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than CLBYTES (the software page size), and,
* on machines that exchange pages of input or output buffers with mbuf
* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
* of the hardware page size.
* MCLBYTES must be no larger than PAGE_SIZE.
*/
#ifndef MSIZE
#define MSIZE 256 /* size of an mbuf */
#endif /* MSIZE */
#ifndef MCLSHIFT
#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
#define MCLSHIFT 11 /* convert bytes to mbuf clusters */
#endif /* MCLSHIFT */
#define MCLBYTES (1 << MCLSHIFT) /* size of an m_buf cluster */
#define MCLOFSET (MCLBYTES - 1) /* offset within an m_buf cluster */
#define MCLBYTES (1 << MCLSHIFT) /* size of an mbuf cluster */
/*
* Some macros for units conversion

14
sys/ia64/include/param.h
View File

@ -116,18 +116,16 @@
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than CLBYTES (the software page size), and,
* on machines that exchange pages of input or output buffers with mbuf
* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
* of the hardware page size.
* MCLBYTES must be no larger than PAGE_SIZE.
*/
#ifndef MSIZE
#define MSIZE 256 /* size of an mbuf */
#endif /* MSIZE */
#ifndef MCLSHIFT
# define MCLSHIFT 11 /* convert bytes to m_buf clusters */
/* 2K cluster can hold Ether frame */
#define MCLSHIFT 11 /* convert bytes to mbuf clusters */
#endif /* MCLSHIFT */
#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
#define MCLOFSET (MCLBYTES - 1)
#define MCLBYTES (1 << MCLSHIFT) /* size of a mbuf cluster */
/*
* Size of kernel malloc arena in CLBYTES-sized logical pages