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| author | Samuel Mendoza-Jonas <sam@mendozajonas.com> | 2018-11-16 07:51:57 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-18 08:09:49 +0300 |
| commit | 0b970e1b040c10d0e2a252943a2feaa6ee3cacdf (patch) | |
| tree | ba87a5c6ec065e98939bc2afbd5506f1253323d0 /net/ncsi/ncsi-aen.c | |
| parent | cd09ab095c6dc4b2b0860f968a0f3ae8d752e76a (diff) | |
| download | linux-0b970e1b040c10d0e2a252943a2feaa6ee3cacdf.tar.xz | |
net/ncsi: Don't mark configured channels inactive
The concepts of a channel being 'active' and it having link are slightly
muddled in the NCSI driver. Tweak this slightly so that
NCSI_CHANNEL_ACTIVE represents a channel that has been configured and
enabled, and NCSI_CHANNEL_INACTIVE represents a de-configured channel.
This distinction is important because a channel can be 'active' but have
its link down; in this case the channel may still need to be configured
so that it may receive AEN link-state-change packets.
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ncsi/ncsi-aen.c')
| -rw-r--r-- | net/ncsi/ncsi-aen.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/net/ncsi/ncsi-aen.c b/net/ncsi/ncsi-aen.c index 65f47a648be3..57f77e5d381a 100644 --- a/net/ncsi/ncsi-aen.c +++ b/net/ncsi/ncsi-aen.c @@ -57,6 +57,7 @@ static int ncsi_aen_handler_lsc(struct ncsi_dev_priv *ndp, int state; unsigned long old_data, data; unsigned long flags; + bool had_link, has_link; /* Find the NCSI channel */ ncsi_find_package_and_channel(ndp, h->common.channel, NULL, &nc); @@ -73,6 +74,9 @@ static int ncsi_aen_handler_lsc(struct ncsi_dev_priv *ndp, ncm->data[2] = data; ncm->data[4] = ntohl(lsc->oem_status); + had_link = !!(old_data & 0x1); + has_link = !!(data & 0x1); + netdev_dbg(ndp->ndev.dev, "NCSI: LSC AEN - channel %u state %s\n", nc->id, data & 0x1 ? "up" : "down"); @@ -80,15 +84,16 @@ static int ncsi_aen_handler_lsc(struct ncsi_dev_priv *ndp, state = nc->state; spin_unlock_irqrestore(&nc->lock, flags); - if (!((old_data ^ data) & 0x1) || chained) - return 0; - if (!(state == NCSI_CHANNEL_INACTIVE && (data & 0x1)) && - !(state == NCSI_CHANNEL_ACTIVE && !(data & 0x1))) + if (state == NCSI_CHANNEL_INACTIVE) + netdev_warn(ndp->ndev.dev, + "NCSI: Inactive channel %u received AEN!\n", + nc->id); + + if ((had_link == has_link) || chained) return 0; - if (state == NCSI_CHANNEL_ACTIVE) + if (had_link) ndp->flags |= NCSI_DEV_RESHUFFLE; - ncsi_stop_channel_monitor(nc); spin_lock_irqsave(&ndp->lock, flags); list_add_tail_rcu(&nc->link, &ndp->channel_queue); |