ee422a28d6
supposed to be opaque to the driver, however it is exposed through several macros which expect certain behavior. In my original implementation, I used the mappedsystemva member of the structure to hold a pointer to the buffer and bytecount to hold the length. It turns out you must use the startva pointer to point to the page containing the start of the buffer and set byteoffset to the offset within the page where the buffer starts. So, for a buffer with address 'baseva,' startva is baseva & ~(PAGE_SIZE -1) and byteoffset is baseva & (PAGE_SIZE -1). We have to maintain this convention everywhere that ndis_buffers are used. Fortunately, Microsoft defines some macros for initializing and manipulating NDIS_BUFFER structures in ntddk.h. I adapted some of them for use here and used them where appropriate. This fixes the discrepancy I observed between how RX'ed packet sizes were being reported in the Broadcom wireless driver and the sample ethernet drivers that I've tested. This should also help the Intel Centrino wireless driver work. Also try to properly initialize the 802.11 BSS and IBSS channels. (Sadly, the channel value is meaningless since there's no way in the existing NDIS API to get/set the channel, but this should take care of any 'invalid channel (NULL)' messages printed on the console.
134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/*
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* Copyright (c) 2003
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* Bill Paul <wpaul@windriver.com>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NTOSKRNL_VAR_H_
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#define _NTOSKRNL_VAR_H_
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/* Note: assumes x86 page size of 4K. */
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#define PAGE_SHIFT 12
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#define SPAN_PAGES(ptr, len) \
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((uint32_t)((((uintptr_t)(ptr) & (PAGE_SIZE -1)) + \
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(len) + (PAGE_SIZE - 1)) >> PAGE_SHIFT))
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#define PAGE_ALIGN(ptr) \
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((void *)((uintptr_t)(ptr) & ~(PAGE_SIZE - 1)))
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#define BYTE_OFFSET(ptr) \
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((uint32_t)((uintptr_t)(ptr) & (PAGE_SIZE - 1)))
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#define MDL_INIT(b, baseva, len) \
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(b)->nb_next = NULL; \
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(b)->nb_size = (uint16_t)(sizeof(struct ndis_buffer) + \
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(sizeof(uint32_t) * SPAN_PAGES((baseva), (len)))); \
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(b)->nb_flags = 0; \
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(b)->nb_startva = (void *)PAGE_ALIGN((baseva)); \
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(b)->nb_byteoffset = BYTE_OFFSET((baseva)); \
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(b)->nb_bytecount = (uint32_t)(len);
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#define MDL_VA(b) \
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((void *)((char *)((b)->nb_startva) + (b)->nb_byteoffset))
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typedef uint32_t kspin_lock;
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struct slist_entry {
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struct slist_entry *sl_next;
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};
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typedef struct slist_entry slist_entry;
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union slist_header {
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uint64_t slh_align;
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struct {
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struct slist_entry *slh_next;
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uint16_t slh_depth;
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uint16_t slh_seq;
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} slh_list;
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};
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typedef union slist_header slist_header;
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struct list_entry {
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struct list_entry *nle_flink;
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struct list_entry *nle_blink;
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};
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typedef struct list_entry list_entry;
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struct general_lookaside {
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slist_header gl_listhead;
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uint16_t gl_depth;
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uint16_t gl_maxdepth;
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uint32_t gl_totallocs;
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union {
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uint32_t gl_allocmisses;
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uint32_t gl_allochits;
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} u_a;
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uint32_t gl_totalfrees;
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union {
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uint32_t gl_freemisses;
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uint32_t gl_freehits;
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} u_m;
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uint32_t gl_type;
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uint32_t gl_tag;
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uint32_t gl_size;
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void *gl_allocfunc;
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void *gl_freefunc;
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list_entry gl_listent;
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uint32_t gl_lasttotallocs;
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union {
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uint32_t gl_lastallocmisses;
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uint32_t gl_lastallochits;
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} u_l;
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uint32_t gl_rsvd[2];
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};
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typedef struct general_lookaside general_lookaside;
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struct npaged_lookaside_list {
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general_lookaside nll_l;
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kspin_lock nll_obsoletelock;
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};
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typedef struct npaged_lookaside_list npaged_lookaside_list;
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typedef struct npaged_lookaside_list paged_lookaside_list;
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typedef void * (*lookaside_alloc_func)(uint32_t, size_t, uint32_t);
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typedef void (*lookaside_free_func)(void *);
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extern image_patch_table ntoskrnl_functbl[];
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__BEGIN_DECLS
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extern int ntoskrnl_libinit(void);
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extern int ntoskrnl_libfini(void);
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__END_DECLS
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#endif /* _NTOSKRNL_VAR_H_ */
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