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authorSamuel Mendoza-Jonas <sam@mendozajonas.com>2017-12-15 16:16:40 +1100
committerDavid S. Miller <davem@davemloft.net>2017-12-18 14:50:11 -0500
commit75e8e15635e08f2598ecd20f4f71f4d043dd6e68 (patch)
tree328d75bf43e0f9f403fca2323e8d827cac200b43 /net/ncsi
parent27e9f4b3e55a8b869493970d01f48685bfd54834 (diff)
downloadlinux-75e8e15635e08f2598ecd20f4f71f4d043dd6e68.tar.bz2
net/ncsi: Don't take any action on HNCDSC AEN
The current HNCDSC handler takes the status flag from the AEN packet and will update or change the current channel based on this flag and the current channel status. However the flag from the HNCDSC packet merely represents the host link state. While the state of the host interface is potentially interesting information it should not affect the state of the NCSI link. Indeed the NCSI specification makes no mention of any recommended action related to the host network controller driver state. Update the HNCDSC handler to record the host network driver status but take no other action. Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Acked-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ncsi')
-rw-r--r--net/ncsi/ncsi-aen.c35
1 files changed, 3 insertions, 32 deletions
diff --git a/net/ncsi/ncsi-aen.c b/net/ncsi/ncsi-aen.c
index 67e708e98ccf..e7b05de1e6d1 100644
--- a/net/ncsi/ncsi-aen.c
+++ b/net/ncsi/ncsi-aen.c
@@ -143,43 +143,14 @@ static int ncsi_aen_handler_hncdsc(struct ncsi_dev_priv *ndp,
if (!nc)
return -ENODEV;
- /* If the channel is active one, we need reconfigure it */
spin_lock_irqsave(&nc->lock, flags);
ncm = &nc->modes[NCSI_MODE_LINK];
hncdsc = (struct ncsi_aen_hncdsc_pkt *)h;
ncm->data[3] = ntohl(hncdsc->status);
- netdev_info(ndp->ndev.dev, "NCSI: HNCDSC AEN - channel %u state %s\n",
- nc->id, ncm->data[3] & 0x3 ? "up" : "down");
- if (!list_empty(&nc->link) ||
- nc->state != NCSI_CHANNEL_ACTIVE) {
- spin_unlock_irqrestore(&nc->lock, flags);
- return 0;
- }
-
- spin_unlock_irqrestore(&nc->lock, flags);
- if (!(ndp->flags & NCSI_DEV_HWA) && !(ncm->data[3] & 0x1))
- ndp->flags |= NCSI_DEV_RESHUFFLE;
-
- /* If this channel is the active one and the link doesn't
- * work, we have to choose another channel to be active one.
- * The logic here is exactly similar to what we do when link
- * is down on the active channel.
- *
- * On the other hand, we need configure it when host driver
- * state on the active channel becomes ready.
- */
- ncsi_stop_channel_monitor(nc);
-
- spin_lock_irqsave(&nc->lock, flags);
- nc->state = (ncm->data[3] & 0x1) ? NCSI_CHANNEL_INACTIVE :
- NCSI_CHANNEL_ACTIVE;
spin_unlock_irqrestore(&nc->lock, flags);
-
- spin_lock_irqsave(&ndp->lock, flags);
- list_add_tail_rcu(&nc->link, &ndp->channel_queue);
- spin_unlock_irqrestore(&ndp->lock, flags);
-
- ncsi_process_next_channel(ndp);
+ netdev_printk(KERN_DEBUG, ndp->ndev.dev,
+ "NCSI: host driver %srunning on channel %u\n",
+ ncm->data[3] & 0x1 ? "" : "not ", nc->id);
return 0;
}