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qeth: EDDP does not work on large MTUs 

Fix filling the qdio buffers in EDDP mode.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Frank Blaschka 2007-10-05 16:45:45 +02:00 committed by David S. Miller
parent bc4b2b497a
commit 6570ebc4f5
2 changed files with 11 additions and 8 deletions
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16
drivers/s390/net/qeth_eddp.c
View File

@ -159,13 +159,15 @@ qeth_eddp_fill_buffer(struct qeth_qdio_out_q *queue,
buffer = buf->buffer;
/* fill one skb into buffer */
for (i = 0; i < ctx->elements_per_skb; ++i){
buffer->element[buf->next_element_to_fill].addr =
ctx->elements[element].addr;
buffer->element[buf->next_element_to_fill].length =
ctx->elements[element].length;
buffer->element[buf->next_element_to_fill].flags =
ctx->elements[element].flags;
buf->next_element_to_fill++;
if (ctx->elements[element].length != 0) {
buffer->element[buf->next_element_to_fill].
addr = ctx->elements[element].addr;
buffer->element[buf->next_element_to_fill].
length = ctx->elements[element].length;
buffer->element[buf->next_element_to_fill].
flags = ctx->elements[element].flags;
buf->next_element_to_fill++;
}
element++;
elements--;
}

3
drivers/s390/net/qeth_main.c
View File

@ -4508,7 +4508,8 @@ qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
/* check if we have enough elements (including following
* free buffers) to handle eddp context */
if (qeth_eddp_check_buffers_for_context(queue,ctx) < 0){
printk("eddp tx_dropped 1\n");
if (net_ratelimit())
PRINT_WARN("eddp tx_dropped 1\n");
rc = -EBUSY;
goto out;
}