xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

qeth: allow dynamic change of rx checksumming

Browse Source 
Technically there is no need to set the card offline to change
RX checksumming. Get rid of this stupid limitation.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Frank Blaschka
2009-11-12 00:11:45 +00:00
committed by David S. Miller
parent c3b4a740db
commit 3fd434d846
3 changed files with 41 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
drivers/s390/net/qeth_l3_main.c
View File

@@ -1465,6 +1465,35 @@ static int qeth_l3_send_checksum_command(struct qeth_card *card)
return 0;
}
int qeth_l3_set_rx_csum(struct qeth_card *card,
enum qeth_checksum_types csum_type)
{
int rc = 0;
if (card->options.checksum_type == HW_CHECKSUMMING) {
if ((csum_type != HW_CHECKSUMMING) &&
(card->state != CARD_STATE_DOWN)) {
rc = qeth_l3_send_simple_setassparms(card,
IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
if (rc)
return -EIO;
}
} else {
if (csum_type == HW_CHECKSUMMING) {
if (card->state != CARD_STATE_DOWN) {
if (!qeth_is_supported(card,
IPA_INBOUND_CHECKSUM))
return -EPERM;
rc = qeth_l3_send_checksum_command(card);
if (rc)
return -EIO;
}
}
}
card->options.checksum_type = csum_type;
return rc;
}
static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
{
int rc = 0;
@@ -2954,27 +2983,14 @@ static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
{
struct qeth_card *card = dev->ml_priv;
enum qeth_card_states old_state;
enum qeth_checksum_types csum_type;
if ((card->state != CARD_STATE_UP) &&
(card->state != CARD_STATE_DOWN))
return -EPERM;
if (data)
csum_type = HW_CHECKSUMMING;
else
csum_type = SW_CHECKSUMMING;
if (card->options.checksum_type != csum_type) {
old_state = card->state;
if (card->state == CARD_STATE_UP)
__qeth_l3_set_offline(card->gdev, 1);
card->options.checksum_type = csum_type;
if (old_state == CARD_STATE_UP)
__qeth_l3_set_online(card->gdev, 1);
}
return 0;
return qeth_l3_set_rx_csum(card, csum_type);
}
static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)