On 01/07/15 08:32, Ouyang Changchun wrote:
> Check mq mode for VMDq RSS, handle it correctly instead of returning an error;
> Also remove the limitation of per pool queue number has max value of 1,
> because
> the per pool queue number could be 2 or 4 if it is VMDq RSS mode;
>
> The number of rxq specified in config will determine the mq mode for VMDq RSS.
>
> Signed-off-by: Changchun Ouyang <changchun.ouyang at intel.com>
>
> changes in v5:
> - Fix '<' issue, it should be '<=' to test rxq number;
> - Extract a function to remove the embeded switch-case statement.
>
> ---
> lib/librte_ether/rte_ethdev.c | 50
> ++++++++++++++++++++++++++++++++++++++-----
> 1 file changed, 45 insertions(+), 5 deletions(-)
>
> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> index 95f2ceb..8363e26 100644
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
> @@ -503,6 +503,31 @@ rte_eth_dev_tx_queue_config(struct rte_eth_dev *dev,
> uint16_t nb_queues)
> }
>
> static int
> +rte_eth_dev_check_vf_rss_rxq_num(uint8_t port_id, uint16_t nb_rx_q)
> +{
> + struct rte_eth_dev *dev = &rte_eth_devices[port_id];
> + switch (nb_rx_q) {
> + case 1:
> + case 2:
> + RTE_ETH_DEV_SRIOV(dev).active =
> + ETH_64_POOLS;
> + break;
> + case 4:
> + RTE_ETH_DEV_SRIOV(dev).active =
> + ETH_32_POOLS;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool = nb_rx_q;
> + RTE_ETH_DEV_SRIOV(dev).def_pool_q_idx =
> + dev->pci_dev->max_vfs * nb_rx_q;
> +
> + return 0;
> +}
> +
> +static int
> rte_eth_dev_check_mq_mode(uint8_t port_id, uint16_t nb_rx_q, uint16_t
> nb_tx_q,
> const struct rte_eth_conf *dev_conf)
> {
> @@ -510,8 +535,7 @@ rte_eth_dev_check_mq_mode(uint8_t port_id, uint16_t
> nb_rx_q, uint16_t nb_tx_q,
>
> if (RTE_ETH_DEV_SRIOV(dev).active != 0) {
> /* check multi-queue mode */
> - if ((dev_conf->rxmode.mq_mode == ETH_MQ_RX_RSS) ||
> - (dev_conf->rxmode.mq_mode == ETH_MQ_RX_DCB) ||
> + if ((dev_conf->rxmode.mq_mode == ETH_MQ_RX_DCB) ||
> (dev_conf->rxmode.mq_mode == ETH_MQ_RX_DCB_RSS) ||
> (dev_conf->txmode.mq_mode == ETH_MQ_TX_DCB)) {
> /* SRIOV only works in VMDq enable mode */
> @@ -525,7 +549,6 @@ rte_eth_dev_check_mq_mode(uint8_t port_id, uint16_t
> nb_rx_q, uint16_t nb_tx_q,
> }
>
> switch (dev_conf->rxmode.mq_mode) {
> - case ETH_MQ_RX_VMDQ_RSS:
> case ETH_MQ_RX_VMDQ_DCB:
> case ETH_MQ_RX_VMDQ_DCB_RSS:
> /* DCB/RSS VMDQ in SRIOV mode, not implement yet */
> @@ -534,6 +557,25 @@ rte_eth_dev_check_mq_mode(uint8_t port_id, uint16_t
> nb_rx_q, uint16_t nb_tx_q,
> "unsupported VMDQ mq_mode rx %u\n",
> port_id, dev_conf->rxmode.mq_mode);
> return (-EINVAL);
> + case ETH_MQ_RX_RSS:
> + PMD_DEBUG_TRACE("ethdev port_id=%" PRIu8
> + " SRIOV active, "
> + "Rx mq mode is changed from:"
> + "mq_mode %u into VMDQ mq_mode %u\n",
> + port_id,
> + dev_conf->rxmode.mq_mode,
> + dev->data->dev_conf.rxmode.mq_mode);
> + case ETH_MQ_RX_VMDQ_RSS:
> + dev->data->dev_conf.rxmode.mq_mode = ETH_MQ_RX_VMDQ_RSS;
> + if (nb_rx_q <= RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool)
> + if (rte_eth_dev_check_vf_rss_rxq_num(port_id,
> nb_rx_q) != 0) {
> + PMD_DEBUG_TRACE("ethdev port_id=%d"
> + " SRIOV active, invalid queue"
> + " number for VMDQ RSS\n",
> + port_id);
Some nitpicking here: I'd add the allowed values descriptions to the
error message. Something like: "invalid queue number for VMDQ RSS.
Allowed values are 1, 2 or 4\n".
> + return -EINVAL;
> + }
> + break;
> default: /* ETH_MQ_RX_VMDQ_ONLY or ETH_MQ_RX_NONE */
> /* if nothing mq mode configure, use default scheme */
> dev->data->dev_conf.rxmode.mq_mode =
> ETH_MQ_RX_VMDQ_ONLY;
> @@ -553,8 +595,6 @@ rte_eth_dev_check_mq_mode(uint8_t port_id, uint16_t
> nb_rx_q, uint16_t nb_tx_q,
> default: /* ETH_MQ_TX_VMDQ_ONLY or ETH_MQ_TX_NONE */
> /* if nothing mq mode configure, use default scheme */
> dev->data->dev_conf.txmode.mq_mode =
> ETH_MQ_TX_VMDQ_ONLY;
> - if (RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool > 1)
> - RTE_ETH_DEV_SRIOV(dev).nb_q_per_pool = 1;
I'm not sure u may just remove it. These lines originally belong to a
different flow. Are u sure u can remove them like that? What if the
mq_mode is ETH_MQ_RX_NONE and nb_q_per_pool has been initialized to 4 or
8 in ixgbe_pf_host_init()?
> break;
> }
>
