[dpdk-dev] [PATCH 3/3] net/mlx5: adjust removal error
Matan Azrad
matan at mellanox.com
Thu Nov 2 16:42:04 CET 2017
Fail-safe PMD expects to get -ENODEV error value if sub PMD control
command fails because of device removal.
Make control callbacks return with -ENODEV when the device has
disappeared.
Signed-off-by: Matan Azrad <matan at mellanox.com>
---
drivers/net/mlx5/mlx5.h | 1 +
drivers/net/mlx5/mlx5_ethdev.c | 39 +++++++++++++++++++++++++++++++++++----
drivers/net/mlx5/mlx5_flow.c | 2 ++
drivers/net/mlx5/mlx5_rss.c | 4 ++++
drivers/net/mlx5/mlx5_rxq.c | 12 ++++++++++--
drivers/net/mlx5/mlx5_stats.c | 6 +++++-
drivers/net/mlx5/mlx5_txq.c | 2 ++
7 files changed, 59 insertions(+), 7 deletions(-)
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index e6a69b8..0dd104a 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -208,6 +208,7 @@ int mlx5_ibv_device_to_pci_addr(const struct ibv_device *,
int mlx5_set_link_up(struct rte_eth_dev *dev);
void priv_dev_select_tx_function(struct priv *priv, struct rte_eth_dev *dev);
void priv_dev_select_rx_function(struct priv *priv, struct rte_eth_dev *dev);
+int mlx5_removed(const struct priv *priv);
/* mlx5_mac.c */
diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index c31ea4b..bf61cd6 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -394,6 +394,8 @@ struct priv *
ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
if (ret == -1) {
+ if (mlx5_removed(priv))
+ errno = ENODEV;
DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
name, value_str, value, strerror(errno));
return -1;
@@ -925,13 +927,17 @@ struct priv *
{
struct utsname utsname;
int ver[3];
+ int ret;
if (uname(&utsname) == -1 ||
sscanf(utsname.release, "%d.%d.%d",
&ver[0], &ver[1], &ver[2]) != 3 ||
KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
- return mlx5_link_update_unlocked_gset(dev, wait_to_complete);
- return mlx5_link_update_unlocked_gs(dev, wait_to_complete);
+ ret = mlx5_link_update_unlocked_gset(dev, wait_to_complete);
+ ret = mlx5_link_update_unlocked_gs(dev, wait_to_complete);
+ if (ret && mlx5_removed(mlx5_get_priv(dev)))
+ return -ENODEV;
+ return ret;
}
/**
@@ -978,6 +984,8 @@ struct priv *
strerror(ret));
priv_unlock(priv);
assert(ret >= 0);
+ if (mlx5_removed(priv))
+ return -ENODEV;
return -ret;
}
@@ -1029,6 +1037,8 @@ struct priv *
out:
priv_unlock(priv);
assert(ret >= 0);
+ if (mlx5_removed(priv))
+ return -ENODEV;
return -ret;
}
@@ -1083,6 +1093,8 @@ struct priv *
out:
priv_unlock(priv);
assert(ret >= 0);
+ if (mlx5_removed(priv))
+ return -ENODEV;
return -ret;
}
@@ -1364,13 +1376,13 @@ struct priv *
if (up) {
err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
if (err)
- return err;
+ return errno == ENODEV ? -ENODEV : err;
priv_dev_select_tx_function(priv, dev);
priv_dev_select_rx_function(priv, dev);
} else {
err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP);
if (err)
- return err;
+ return errno == ENODEV ? -ENODEV : err;
dev->rx_pkt_burst = removed_rx_burst;
dev->tx_pkt_burst = removed_tx_burst;
}
@@ -1474,3 +1486,22 @@ struct priv *
dev->rx_pkt_burst = mlx5_rx_burst;
}
}
+
+/**
+ * Check if mlx5 device was removed.
+ *
+ * @param priv
+ * Pointer to private structure.
+ *
+ * @return
+ * -ENODEV when device is removed and rte_errno is set, otherwise 0.
+ */
+int
+mlx5_removed(const struct priv *priv)
+{
+ struct ibv_device_attr device_attr;
+
+ if (ibv_query_device(priv->ctx, &device_attr) == EIO)
+ return -(rte_errno = ENODEV);
+ return 0;
+}
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 5f49bf5..448c0a3 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -3068,6 +3068,8 @@ struct rte_flow *
priv_lock(priv);
ret = priv_fdir_ctrl_func(priv, filter_op, arg);
priv_unlock(priv);
+ if (ret && mlx5_removed(priv))
+ ret = ENODEV;
break;
default:
ERROR("%p: filter type (%d) not supported",
diff --git a/drivers/net/mlx5/mlx5_rss.c b/drivers/net/mlx5/mlx5_rss.c
index f3de46d..1ad9269 100644
--- a/drivers/net/mlx5/mlx5_rss.c
+++ b/drivers/net/mlx5/mlx5_rss.c
@@ -250,6 +250,8 @@
priv_lock(priv);
ret = priv_dev_rss_reta_query(priv, reta_conf, reta_size);
priv_unlock(priv);
+ if (ret && mlx5_removed(priv))
+ return -ENODEV;
return -ret;
}
@@ -282,5 +284,7 @@
mlx5_dev_stop(dev);
mlx5_dev_start(dev);
}
+ if (ret && mlx5_removed(priv))
+ return -ENODEV;
return -ret;
}
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index a1f382b..c9a549d 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -278,6 +278,8 @@
(*priv->rxqs)[idx] = &rxq_ctrl->rxq;
out:
priv_unlock(priv);
+ if (mlx5_removed(priv))
+ return -ENODEV;
return -ret;
}
@@ -485,8 +487,11 @@
}
exit:
priv_unlock(priv);
- if (ret)
+ if (ret) {
WARN("unable to arm interrupt on rx queue %d", rx_queue_id);
+ if (mlx5_removed(priv))
+ return -ENODEV;
+ }
return -ret;
}
@@ -537,9 +542,12 @@
if (rxq_ibv)
mlx5_priv_rxq_ibv_release(priv, rxq_ibv);
priv_unlock(priv);
- if (ret)
+ if (ret) {
WARN("unable to disable interrupt on rx queue %d",
rx_queue_id);
+ if (mlx5_removed(priv))
+ return -ENODEV;
+ }
return -ret;
}
diff --git a/drivers/net/mlx5/mlx5_stats.c b/drivers/net/mlx5/mlx5_stats.c
index 5e225d3..33b2a60 100644
--- a/drivers/net/mlx5/mlx5_stats.c
+++ b/drivers/net/mlx5/mlx5_stats.c
@@ -438,13 +438,17 @@ struct mlx5_counter_ctrl {
stats_n = priv_ethtool_get_stats_n(priv);
if (stats_n < 0) {
priv_unlock(priv);
- return -1;
+ ret = -1;
+ goto error;
}
if (xstats_ctrl->stats_n != stats_n)
priv_xstats_init(priv);
ret = priv_xstats_get(priv, stats);
priv_unlock(priv);
}
+error:
+ if (ret < 0 && mlx5_removed(priv))
+ return -ENODEV;
return ret;
}
diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c
index fbb2630..a0101cb 100644
--- a/drivers/net/mlx5/mlx5_txq.c
+++ b/drivers/net/mlx5/mlx5_txq.c
@@ -186,6 +186,8 @@
(*priv->txqs)[idx] = &txq_ctrl->txq;
out:
priv_unlock(priv);
+ if (mlx5_removed(priv))
+ return -ENODEV;
return -ret;
}
--
1.8.3.1
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