From: Julian Wiedmann <jwi@linux.ibm.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Stefan Raspl <raspl@linux.ibm.com>,
Ursula Braun <ubraun@linux.ibm.com>,
Julian Wiedmann <jwi@linux.ibm.com>
Subject: [PATCH net-next 15/15] s390/qeth: remove duplicated carrier state tracking
Date: Wed, 26 Sep 2018 18:29:16 +0200 [thread overview]
Message-ID: <20180926162916.102720-16-jwi@linux.ibm.com> (raw)
In-Reply-To: <20180926162916.102720-1-jwi@linux.ibm.com>
The netdevice is always available, apply any carrier state changes to it
without caching them.
On a STARTLAN event (ie. carrier-up), defer updating the state to
qeth_core_hardsetup_card() in the subsequent recovery action.
Also remove the carrier-state checks from the xmit routines. Stopping
transmission on carrier-down is the responsibility of upper-level code
(eg see dev_direct_xmit()).
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
drivers/s390/net/qeth_core.h | 1 -
drivers/s390/net/qeth_core_main.c | 12 +++++-------
drivers/s390/net/qeth_core_sys.c | 7 +++----
drivers/s390/net/qeth_l2_main.c | 6 +-----
drivers/s390/net/qeth_l3_main.c | 6 +-----
5 files changed, 10 insertions(+), 22 deletions(-)
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 64bcb1237db0..cd44ff2df6fe 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -763,7 +763,6 @@ struct qeth_switch_info {
struct qeth_card {
struct list_head list;
enum qeth_card_states state;
- int lan_online;
spinlock_t lock;
struct ccwgroup_device *gdev;
struct qeth_channel read;
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 9cbdc6760aba..0078b5d217cc 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -652,16 +652,13 @@ static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
"The link for interface %s on CHPID 0x%X failed\n",
QETH_CARD_IFNAME(card), card->info.chpid);
qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
+ netif_carrier_off(card->dev);
}
- card->lan_online = 0;
- netif_carrier_off(card->dev);
return NULL;
case IPA_CMD_STARTLAN:
dev_info(&card->gdev->dev,
"The link for %s on CHPID 0x%X has been restored\n",
QETH_CARD_IFNAME(card), card->info.chpid);
- netif_carrier_on(card->dev);
- card->lan_online = 1;
if (card->info.hwtrap)
card->info.hwtrap = 2;
qeth_schedule_recovery(card);
@@ -5133,13 +5130,14 @@ int qeth_core_hardsetup_card(struct qeth_card *card)
if (rc == IPA_RC_LAN_OFFLINE) {
dev_warn(&card->gdev->dev,
"The LAN is offline\n");
- card->lan_online = 0;
+ netif_carrier_off(card->dev);
} else {
rc = -ENODEV;
goto out;
}
- } else
- card->lan_online = 1;
+ } else {
+ netif_carrier_on(card->dev);
+ }
card->options.ipa4.supported_funcs = 0;
card->options.ipa6.supported_funcs = 0;
diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c
index 970f6c71a66e..30f61608fa22 100644
--- a/drivers/s390/net/qeth_core_sys.c
+++ b/drivers/s390/net/qeth_core_sys.c
@@ -31,10 +31,9 @@ static ssize_t qeth_dev_state_show(struct device *dev,
case CARD_STATE_SOFTSETUP:
return sprintf(buf, "SOFTSETUP\n");
case CARD_STATE_UP:
- if (card->lan_online)
- return sprintf(buf, "UP (LAN ONLINE)\n");
- else
- return sprintf(buf, "UP (LAN OFFLINE)\n");
+ return sprintf(buf, "UP (LAN %s)\n",
+ netif_carrier_ok(card->dev) ? "ONLINE" :
+ "OFFLINE");
case CARD_STATE_RECOVER:
return sprintf(buf, "RECOVER\n");
default:
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index ed475b4ddd3e..c810d53fff51 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -694,7 +694,7 @@ static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
int tx_bytes = skb->len;
int rc;
- if ((card->state != CARD_STATE_UP) || !card->lan_online) {
+ if (card->state != CARD_STATE_UP) {
card->stats.tx_carrier_errors++;
goto tx_drop;
}
@@ -997,10 +997,6 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
goto out_remove;
}
card->state = CARD_STATE_SOFTSETUP;
- if (card->lan_online)
- netif_carrier_on(card->dev);
- else
- netif_carrier_off(card->dev);
qeth_set_allowed_threads(card, 0xffffffff, 0);
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 86c89338b1a2..80893481bb85 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -2233,7 +2233,7 @@ static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
goto tx_drop;
}
- if (card->state != CARD_STATE_UP || !card->lan_online) {
+ if (card->state != CARD_STATE_UP) {
card->stats.tx_carrier_errors++;
goto tx_drop;
}
@@ -2573,10 +2573,6 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
qeth_set_allowed_threads(card, 0xffffffff, 0);
qeth_l3_recover_ip(card);
- if (card->lan_online)
- netif_carrier_on(card->dev);
- else
- netif_carrier_off(card->dev);
qeth_enable_hw_features(card->dev);
if (recover_flag == CARD_STATE_RECOVER) {
--
2.16.4
next prev parent reply other threads:[~2018-09-26 16:29 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-26 16:29 [PATCH net-next 00/15] s390/net: updates 2018-09-26 Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 01/15] s390/qeth: convert layer attribute to enum Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 02/15] s390/qeth: use DEFINE_MUTEX for qeth_mod_mutex Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 03/15] s390/qeth: fix discipline unload after setup error Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 04/15] s390/qeth: on gdev release, reset drvdata Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 05/15] net/af_iucv: locate IUCV header via skb_network_header() Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 06/15] s390/qeth: replace open-coded skb_queue_walk() Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 07/15] s390/qeth: remove additional skb refcount Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 08/15] s390/qeth: re-use qeth_notify_skbs() Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 09/15] s390/qeth: pass card pointer in iob callback Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 10/15] s390/qeth: remove CARD_FROM_CDEV helper Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 11/15] s390/qeth: remove various redundant code Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 12/15] s390/qeth: consume local address events Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 13/15] s390/qeth: re-indent qeth_check_ipa_data() Julian Wiedmann
2018-09-26 16:29 ` [PATCH net-next 14/15] s390/qeth: clean up drop conditions for received cmds Julian Wiedmann
2018-09-26 16:29 ` Julian Wiedmann [this message]
2018-09-26 17:02 ` [PATCH net-next 00/15] s390/net: updates 2018-09-26 David Miller
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