blob: 05bef03bf5e80d1ea7ba67b11693b835988443e0 [file] [log] [blame]
From 325648956d4e5e98dbb2552b77ac2da1900b6a00 Mon Sep 17 00:00:00 2001
From: Julian Wiedmann <jwi@linux.ibm.com>
Date: Wed, 18 Dec 2019 16:32:27 +0100
Subject: [PATCH] s390/qeth: fix promiscuous mode after reset
commit 0f399305cd31e5c813086eaa264f7f47e205c10e upstream.
When managing the promiscuous mode during an RX modeset, qeth caches the
current HW state to avoid repeated programming of the same state on each
modeset.
But while tearing down a device, we forget to clear the cached state. So
when the device is later set online again, the initial RX modeset
doesn't program the promiscuous mode since we believe it is already
enabled.
Fix this by clearing the cached state in the tear-down path.
Note that for the SBP variant of promiscuous mode, this accidentally
works right now because we unconditionally restore the SBP role while
re-initializing.
Fixes: 4a71df50047f ("qeth: new qeth device driver")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index ff8a6cd790b1..a59e6e1c2642 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -299,6 +299,7 @@ static void qeth_l2_stop_card(struct qeth_card *card)
flush_workqueue(card->event_wq);
card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
+ card->info.promisc_mode = 0;
}
static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
diff --git a/drivers/s390/net/qeth_l2_sys.c b/drivers/s390/net/qeth_l2_sys.c
index f2c3b127b1e4..10c2fd44170b 100644
--- a/drivers/s390/net/qeth_l2_sys.c
+++ b/drivers/s390/net/qeth_l2_sys.c
@@ -269,7 +269,8 @@ void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card)
return;
if (!card->options.sbp.supported_funcs)
return;
- if (card->options.sbp.role != QETH_SBP_ROLE_NONE) {
+ if (!card->options.sbp.reflect_promisc &&
+ card->options.sbp.role != QETH_SBP_ROLE_NONE) {
/* Conditional to avoid spurious error messages */
qeth_bridgeport_setrole(card, card->options.sbp.role);
/* Let the callback function refresh the stored role value. */
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 13bf3e2e9cea..a80b4ecc8c8e 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -1442,6 +1442,7 @@ static void qeth_l3_stop_card(struct qeth_card *card)
}
flush_workqueue(card->event_wq);
+ card->info.promisc_mode = 0;
}
/*
--
2.7.4