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| author | Stefan Raspl <raspl@linux.vnet.ibm.com> | 2013-06-24 13:21:49 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-06-25 16:10:14 -0700 |
| commit | fe44014a8287b372e22ef4daf7b682e6378b784f (patch) | |
| tree | 71be76439c0fccbf668f5915d6515b8c19dfe262 /drivers/s390 | |
| parent | 819bc78f539038e3203f63342e20b75d7660d232 (diff) | |
| download | linux-fe44014a8287b372e22ef4daf7b682e6378b784f.tar.gz linux-fe44014a8287b372e22ef4daf7b682e6378b784f.tar.bz2 linux-fe44014a8287b372e22ef4daf7b682e6378b784f.zip | |
qeth: Increase default MTU for OSA devices
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>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 6cd0fc1b203a..f161a10a6579 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -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; } |