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Port close results in "invalid port_id" log message

dpdk-dev [email protected] 1 participant 2 messages Jan 22, 2021 – Jan 31, 2021

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https://bugs.dpdk.org/show_bug.cgi?id=624

Bug ID: 624
Summary: Port close results in "invalid port_id" log message
Product: DPDK
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: ethdev
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---

Closing port leads to an EAL error log message:

```
int
rte_eth_dev_close(uint16_t port_id)
{
        struct rte_eth_dev *dev;
        int firsterr, binerr;
        int *lasterr = &firsterr;

        RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
        dev = &rte_eth_devices[port_id];

        RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_close, -ENOTSUP);
        *lasterr = (*dev->dev_ops->dev_close)(dev);
        if (*lasterr != 0)
                lasterr = &binerr;

        rte_ethdev_trace_close(port_id);
        *lasterr = rte_eth_dev_release_port(dev);

        return eth_err(port_id, firsterr);
}
```

eth_err() is called after rte_dev_release_port(), so the port_id is no longer valid at that stage. The eth_err() itself calls rte_eth_dev_is_removed(), which in turn calls RTE_ETH_VALID_PORTID_OR_ERR_RET(), which outputs a log message on invalid port_id.

Offending commit seems to be:

```
commit 8a5a0aad5d3e4f4f75ca81932eb247de94765685
Author: Thomas Monjalon <[email protected]>
Date:   Fri Oct 16 15:32:59 2020 +0200

    ethdev: allow close function to return an error

    The API function rte_eth_dev_close() was returning void.
    The return type is changed to int for notifying of errors.

    If an error happens during a close operation,
    the status of the port is undefined,
    a maximum of resources having been freed.

    Signed-off-by: Thomas Monjalon <[email protected]>
    Reviewed-by: Liron Himi <[email protected]>
    Acked-by: Stephen Hemminger <[email protected]>
    Acked-by: Andrew Rybchenko <[email protected]>
    Reviewed-by: Ferruh Yigit <[email protected]>
```
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#1 lore raw

https://bugs.dpdk.org/show_bug.cgi?id=624

Thomas Monjalon ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|IN_PROGRESS                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Thomas Monjalon ([email protected]) --- Resolved in http://git.dpdk.org/dpdk/commit/?id=a6f34f9100

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