On 3/7/2017 4:31 PM, Pascal Mazon wrote:
> Tap PMD is flexible, it supports any speed.
>
> Signed-off-by: Pascal Mazon <pascal.ma...@6wind.com>
> ---
> doc/guides/nics/features/tap.ini | 1 +
> drivers/net/tap/rte_eth_tap.c | 35 +++++++++++++++++++++++++++++++++++
> 2 files changed, 36 insertions(+)
>
> diff --git a/doc/guides/nics/features/tap.ini
> b/doc/guides/nics/features/tap.ini
> index d9b47a003654..dad5a0561087 100644
> --- a/doc/guides/nics/features/tap.ini
> +++ b/doc/guides/nics/features/tap.ini
> @@ -9,6 +9,7 @@ Jumbo frame = Y
> Promiscuous mode = Y
> Allmulticast mode = Y
> Basic stats = Y
> +Speed capabilities = Y
> Unicast MAC filter = Y
> Other kdrv = Y
> ARMv7 = Y
> diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
> index 1e46ee36efa2..ef525a3f0826 100644
> --- a/drivers/net/tap/rte_eth_tap.c
> +++ b/drivers/net/tap/rte_eth_tap.c
> @@ -351,6 +351,40 @@ tap_dev_configure(struct rte_eth_dev *dev __rte_unused)
> return 0;
> }
>
> +static uint32_t
> +tap_dev_speed_capa(void)
> +{
> + uint32_t speed = pmd_link.link_speed;
link_speed is already hardcoded into PMD, so there is nothing to detect
here. Would it be different if PMD directly return pmd_link.link_speed?
> + uint32_t capa = 0;
> +
> + if (speed >= ETH_SPEED_NUM_10M)
> + capa |= ETH_LINK_SPEED_10M;
> + if (speed >= ETH_SPEED_NUM_100M)
> + capa |= ETH_LINK_SPEED_100M;
> + if (speed >= ETH_SPEED_NUM_1G)
> + capa |= ETH_LINK_SPEED_1G;
> + if (speed >= ETH_SPEED_NUM_5G)
> + capa |= ETH_LINK_SPEED_2_5G;
> + if (speed >= ETH_SPEED_NUM_5G)
> + capa |= ETH_LINK_SPEED_5G;
> + if (speed >= ETH_SPEED_NUM_10G)
> + capa |= ETH_LINK_SPEED_10G;
> + if (speed >= ETH_SPEED_NUM_20G)
> + capa |= ETH_LINK_SPEED_20G;
> + if (speed >= ETH_SPEED_NUM_25G)
> + capa |= ETH_LINK_SPEED_25G;
> + if (speed >= ETH_SPEED_NUM_40G)
> + capa |= ETH_LINK_SPEED_40G;
> + if (speed >= ETH_SPEED_NUM_50G)
> + capa |= ETH_LINK_SPEED_50G;
> + if (speed >= ETH_SPEED_NUM_56G)
> + capa |= ETH_LINK_SPEED_56G;
> + if (speed >= ETH_SPEED_NUM_100G)
> + capa |= ETH_LINK_SPEED_100G;
I would prefer switch here [1], but functionally both are same, it is
your call.
[1]
switch (speed) {
case ETH_SPEED_NUM_100G:
capa |= ETH_LINK_SPEED_100G
/* fallthrough */
case ETH_SPEED_NUM_56G:
capa |= ETH_LINK_SPEED_56G
/* fallthrough */
...
};
> +
> + return capa;
> +}
> +
> static void
> tap_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
> {
> @@ -363,6 +397,7 @@ tap_dev_info(struct rte_eth_dev *dev, struct
> rte_eth_dev_info *dev_info)
> dev_info->max_tx_queues = internals->nb_queues;
> dev_info->min_rx_bufsize = 0;
> dev_info->pci_dev = NULL;
> + dev_info->speed_capa = tap_dev_speed_capa();
> }
>
> static void
>
