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qeth: Increase default MTU for OSA devices

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Increase the default MTU for real OSA devices in layer 2 mode
to 1500 Bytes for increased compatibility.

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Raspl 2013-06-24 13:21:49 +02:00 committed by David S. Miller
parent 819bc78f53
commit fe44014a82
1 changed files with 4 additions and 3 deletions
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7
drivers/s390/net/qeth_core_main.c
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@ -2198,11 +2198,11 @@ static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
case QETH_LINK_TYPE_LANE_TR:
return 2000;
default:
return 1492;
return card->options.layer2 ? 1500 : 1492;
}
case QETH_CARD_TYPE_OSM:
case QETH_CARD_TYPE_OSX:
return 1492;
return card->options.layer2 ? 1500 : 1492;
default:
return 1500;
}
@ -2275,9 +2275,10 @@ static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
card->info.max_mtu = mtu;
card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
} else {
card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
iob->data);
card->info.initial_mtu = min(card->info.max_mtu,
qeth_get_initial_mtu_for_card(card));
card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
}