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Diffstat (limited to 'net/ncsi/ncsi-manage.c')
-rw-r--r--net/ncsi/ncsi-manage.c126
1 files changed, 95 insertions, 31 deletions
diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c
index 5e509e547c2d..a3bd5fa8ad09 100644
--- a/net/ncsi/ncsi-manage.c
+++ b/net/ncsi/ncsi-manage.c
@@ -540,42 +540,86 @@ static void ncsi_suspend_channel(struct ncsi_dev_priv *ndp)
nd->state = ncsi_dev_state_suspend_select;
/* Fall through */
case ncsi_dev_state_suspend_select:
- case ncsi_dev_state_suspend_dcnt:
- case ncsi_dev_state_suspend_dc:
- case ncsi_dev_state_suspend_deselect:
ndp->pending_req_num = 1;
- np = ndp->active_package;
- nc = ndp->active_channel;
+ nca.type = NCSI_PKT_CMD_SP;
nca.package = np->id;
- if (nd->state == ncsi_dev_state_suspend_select) {
- nca.type = NCSI_PKT_CMD_SP;
- nca.channel = NCSI_RESERVED_CHANNEL;
- if (ndp->flags & NCSI_DEV_HWA)
- nca.bytes[0] = 0;
- else
- nca.bytes[0] = 1;
+ nca.channel = NCSI_RESERVED_CHANNEL;
+ if (ndp->flags & NCSI_DEV_HWA)
+ nca.bytes[0] = 0;
+ else
+ nca.bytes[0] = 1;
+
+ /* To retrieve the last link states of channels in current
+ * package when current active channel needs fail over to
+ * another one. It means we will possibly select another
+ * channel as next active one. The link states of channels
+ * are most important factor of the selection. So we need
+ * accurate link states. Unfortunately, the link states on
+ * inactive channels can't be updated with LSC AEN in time.
+ */
+ if (ndp->flags & NCSI_DEV_RESHUFFLE)
+ nd->state = ncsi_dev_state_suspend_gls;
+ else
nd->state = ncsi_dev_state_suspend_dcnt;
- } else if (nd->state == ncsi_dev_state_suspend_dcnt) {
- nca.type = NCSI_PKT_CMD_DCNT;
- nca.channel = nc->id;
- nd->state = ncsi_dev_state_suspend_dc;
- } else if (nd->state == ncsi_dev_state_suspend_dc) {
- nca.type = NCSI_PKT_CMD_DC;
+ ret = ncsi_xmit_cmd(&nca);
+ if (ret)
+ goto error;
+
+ break;
+ case ncsi_dev_state_suspend_gls:
+ ndp->pending_req_num = np->channel_num;
+
+ nca.type = NCSI_PKT_CMD_GLS;
+ nca.package = np->id;
+
+ nd->state = ncsi_dev_state_suspend_dcnt;
+ NCSI_FOR_EACH_CHANNEL(np, nc) {
nca.channel = nc->id;
- nca.bytes[0] = 1;
- nd->state = ncsi_dev_state_suspend_deselect;
- } else if (nd->state == ncsi_dev_state_suspend_deselect) {
- nca.type = NCSI_PKT_CMD_DP;
- nca.channel = NCSI_RESERVED_CHANNEL;
- nd->state = ncsi_dev_state_suspend_done;
+ ret = ncsi_xmit_cmd(&nca);
+ if (ret)
+ goto error;
}
+ break;
+ case ncsi_dev_state_suspend_dcnt:
+ ndp->pending_req_num = 1;
+
+ nca.type = NCSI_PKT_CMD_DCNT;
+ nca.package = np->id;
+ nca.channel = nc->id;
+
+ nd->state = ncsi_dev_state_suspend_dc;
ret = ncsi_xmit_cmd(&nca);
- if (ret) {
- nd->state = ncsi_dev_state_functional;
- return;
- }
+ if (ret)
+ goto error;
+
+ break;
+ case ncsi_dev_state_suspend_dc:
+ ndp->pending_req_num = 1;
+
+ nca.type = NCSI_PKT_CMD_DC;
+ nca.package = np->id;
+ nca.channel = nc->id;
+ nca.bytes[0] = 1;
+
+ nd->state = ncsi_dev_state_suspend_deselect;
+ ret = ncsi_xmit_cmd(&nca);
+ if (ret)
+ goto error;
+
+ break;
+ case ncsi_dev_state_suspend_deselect:
+ ndp->pending_req_num = 1;
+
+ nca.type = NCSI_PKT_CMD_DP;
+ nca.package = np->id;
+ nca.channel = NCSI_RESERVED_CHANNEL;
+
+ nd->state = ncsi_dev_state_suspend_done;
+ ret = ncsi_xmit_cmd(&nca);
+ if (ret)
+ goto error;
break;
case ncsi_dev_state_suspend_done:
@@ -589,6 +633,10 @@ static void ncsi_suspend_channel(struct ncsi_dev_priv *ndp)
netdev_warn(nd->dev, "Wrong NCSI state 0x%x in suspend\n",
nd->state);
}
+
+ return;
+error:
+ nd->state = ncsi_dev_state_functional;
}
static void ncsi_configure_channel(struct ncsi_dev_priv *ndp)
@@ -597,6 +645,7 @@ static void ncsi_configure_channel(struct ncsi_dev_priv *ndp)
struct net_device *dev = nd->dev;
struct ncsi_package *np = ndp->active_package;
struct ncsi_channel *nc = ndp->active_channel;
+ struct ncsi_channel *hot_nc = NULL;
struct ncsi_cmd_arg nca;
unsigned char index;
unsigned long flags;
@@ -702,12 +751,20 @@ static void ncsi_configure_channel(struct ncsi_dev_priv *ndp)
break;
case ncsi_dev_state_config_done:
spin_lock_irqsave(&nc->lock, flags);
- if (nc->modes[NCSI_MODE_LINK].data[2] & 0x1)
+ if (nc->modes[NCSI_MODE_LINK].data[2] & 0x1) {
+ hot_nc = nc;
nc->state = NCSI_CHANNEL_ACTIVE;
- else
+ } else {
+ hot_nc = NULL;
nc->state = NCSI_CHANNEL_INACTIVE;
+ }
spin_unlock_irqrestore(&nc->lock, flags);
+ /* Update the hot channel */
+ spin_lock_irqsave(&ndp->lock, flags);
+ ndp->hot_channel = hot_nc;
+ spin_unlock_irqrestore(&ndp->lock, flags);
+
ncsi_start_channel_monitor(nc);
ncsi_process_next_channel(ndp);
break;
@@ -725,10 +782,14 @@ error:
static int ncsi_choose_active_channel(struct ncsi_dev_priv *ndp)
{
struct ncsi_package *np;
- struct ncsi_channel *nc, *found;
+ struct ncsi_channel *nc, *found, *hot_nc;
struct ncsi_channel_mode *ncm;
unsigned long flags;
+ spin_lock_irqsave(&ndp->lock, flags);
+ hot_nc = ndp->hot_channel;
+ spin_unlock_irqrestore(&ndp->lock, flags);
+
/* The search is done once an inactive channel with up
* link is found.
*/
@@ -746,6 +807,9 @@ static int ncsi_choose_active_channel(struct ncsi_dev_priv *ndp)
if (!found)
found = nc;
+ if (nc == hot_nc)
+ found = nc;
+
ncm = &nc->modes[NCSI_MODE_LINK];
if (ncm->data[2] & 0x1) {
spin_unlock_irqrestore(&nc->lock, flags);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-27 18:19:01 +0300