[dpdk-dev] [PATCH v4 4/6] ether: Check VMDq RSS mode
Ouyang, Changchun
changchun.ouyang at intel.com
Sun Jan 4 09:58:09 CET 2015
> -----Original Message-----
> From: Vlad Zolotarov [mailto:vladz at cloudius-systems.com]
> Sent: Sunday, January 4, 2015 4:45 PM
> To: Ouyang, Changchun; dev at dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v4 4/6] ether: Check VMDq RSS mode
>
>
> On 01/04/15 09:18, 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>
> > ---
> > lib/librte_ether/rte_ethdev.c | 39
> ++++++++++++++++++++++++++++++++++-----
> > 1 file changed, 34 insertions(+), 5 deletions(-)
> >
> > diff --git a/lib/librte_ether/rte_ethdev.c
> > b/lib/librte_ether/rte_ethdev.c index 95f2ceb..59ff325 100644
> > --- a/lib/librte_ether/rte_ethdev.c
> > +++ b/lib/librte_ether/rte_ethdev.c
> > @@ -510,8 +510,7 @@ 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 +524,6 @@
> > 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
> > +532,39 @@ 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) {
> > + 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:
> > + PMD_DEBUG_TRACE("ethdev
> port_id=%d"
> > + " SRIOV active, "
> > + "queue number invalid\n",
> > + port_id);
> > + 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;
> > + }
>
> Don't u need to return an error in the "else" here?
Actually it has such a check after these code snippet, and it does return error for the else case,
Because it is original logic, I don't change any code around it, so it doesn't display here, you can check the codes.
Thanks
Changchun
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