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ieee1394: add comments in struct hpsb_packet

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to clarify who is supposed to set what

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2007-05-19 12:29:37 +02:00
parent 17a624869e
commit 6552731a05
1 changed files with 7 additions and 3 deletions
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10
drivers/ieee1394/ieee1394_core.h
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@ -37,7 +37,7 @@ struct hpsb_packet {
hpsb_unused, hpsb_queued, hpsb_pending, hpsb_complete
} __attribute__((packed)) state;
/* These are core internal. */
/* These are core-internal. */
signed char tlabel;
signed char ack_code;
unsigned char tcode;
@ -62,11 +62,15 @@ struct hpsb_packet {
/* Store jiffies for implementing bus timeouts. */
unsigned long sendtime;
/* Sizes are in bytes. *data can be DMA-mapped. */
/* Core-internal. */
size_t allocated_data_size; /* as allocated */
/* Sizes are in bytes. To be set by caller of hpsb_alloc_packet. */
size_t data_size; /* as filled in */
size_t header_size; /* as filled in, not counting the CRC */
quadlet_t *data;
/* Buffers */
quadlet_t *data; /* can be DMA-mapped */
quadlet_t header[5];
quadlet_t embedded_data[0]; /* keep as last member */
};