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firewire: net: better FIFO address range check and rcodes 

The AR req handler should not check the generation; higher level code
is the better place to handle bus generation changes.  The target node
ID just needs to be checked for not being the "all nodes" address; in
this case don't handle the request and don't respond.

Use Address_Error and Type_Error rcodes as appropriate.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2009-06-16 22:35:32 +02:00
parent b01b4babbf
commit 00635b8ee2
1 changed files with 14 additions and 16 deletions
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30
drivers/firewire/net.c
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@ -810,29 +810,27 @@ static void fwnet_receive_packet(struct fw_card *card, struct fw_request *r,
int speed, unsigned long long offset, void *payload,
size_t length, void *callback_data)
{
struct fwnet_device *dev;
int status;
struct fwnet_device *dev = callback_data;
int rcode;
dev = callback_data;
if (tcode != TCODE_WRITE_BLOCK_REQUEST
|| destination != card->node_id /* <- FIXME */
|| generation != card->generation /* <- FIXME */
|| offset != dev->handler.offset) {
fw_send_response(card, r, RCODE_CONFLICT_ERROR);
if (destination == IEEE1394_ALL_NODES) {
kfree(r);
return;
}
status = fwnet_incoming_packet(dev, payload, length,
source, generation, false);
if (status != 0) {
if (offset != dev->handler.offset)
rcode = RCODE_ADDRESS_ERROR;
else if (tcode != TCODE_WRITE_BLOCK_REQUEST)
rcode = RCODE_TYPE_ERROR;
else if (fwnet_incoming_packet(dev, payload, length,
source, generation, false) != 0) {
fw_error("Incoming packet failure\n");
fw_send_response(card, r, RCODE_CONFLICT_ERROR);
rcode = RCODE_CONFLICT_ERROR;
} else
rcode = RCODE_COMPLETE;
return;
}
fw_send_response(card, r, RCODE_COMPLETE);
fw_send_response(card, r, rcode);
}
static void fwnet_receive_broadcast(struct fw_iso_context *context,