[dpdk-dev] [Bug 350] ixgbe: incorrect speed capabilities advertised for X553 devices

[bugzilla@dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=350

            Bug ID: 350
           Summary: ixgbe: incorrect speed capabilities advertised for
                    X553 devices
           Product: DPDK
           Version: 19.08
          Hardware: All
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: dev@dpdk.org
          Reporter: mgsmith@netgate.com
  Target Milestone: ---

Overview:

X553 copper 1Gbps devices (vendor ID 0x8086, device IDs 0x15e4 and 0x15e5) have
speed_capa set to ETH_LINK_SPEED_1G | ETH_LINK_SPEED_10G when device info is
retrieved with rte_eth_dev_info_get(). These devices are not capable of
supporting 10G, but they are probably capable of supporting 100M and 10M, which
are omitted from speed_capa.

Steps to Reproduce:

1. Install FD.io VPP packages (available at
https://packagecloud.io/fdio/release) on a system with X553 copper ports
attached which has a recent release of Ubuntu or CentOS 7 installed.
2. If the X553 ports are attached to the kernel ixgbe driver, bring those ports
down with a command like 'sudo ip link set dev <interface_name> down'
3. Start VPP with 'sudo systemctl start vpp'. It should bind the ports to a uio
driver and take control of them.
4. Check the interfaces VPP is managing with 'sudo vppctl show int'. The X553
ports will have names like TenGigabitEthernetX/Y/Z (X/Y/Z are filled in with
PCI address). The 'TenGigabitEthernet' portion of the name was selected based
on the speeds advertised.

Actual Results:

If gdb is attached and used to inspect contents of a struct rte_eth_dev_info
that was filled in by rte_eth_dev_info_get(), speed_capa has a value of 288
(ETH_LINK_SPEED_1G | ETH_LINK_SPEED_10G).

Expected Results:

rte_eth_dev_info_get(), via ixgbe_dev_info_get(), should set speed_capa to
ETH_LINK_SPEED_1G | ETH_LINK_SPEED_100M | ETH_LINK_SPEED_10M for devices with
IDs 0x15E4 (IXGBE_DEV_ID_X550EM_A_1G_T) and 0x15E5
(IXGBE_DEV_ID_X550EM_A_1G_T_L)

Build date and hardware:

Problem observed in DPDK 19.05. Appears to still be present in current
Intel C3558 SoC with 4 copper ports - 2 with device ID 0x15e4, 2 with device ID
0x15e5

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