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igb: fix VF start with PF stopped

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When igb runs as a PF, mbox interrupt is prerequisite to make VF
start normally.
And PF sometimes won't 'dev_start', so the mbox interrupt register
during 'dev_init' is required.
The patch rolls back the interrupt register for mbox,lsc to the 'dev_init'.
As UIO doesn't support multiple vector, mbox has to occupy the only one.
It adds condition check on 'dev_start', rxq interrupt is not allowed
when PF running in IOV mode via UIO.

Signed-off-by: Cunming Liang <cunming.liang@intel.com>
This commit is contained in:
Cunming Liang 2015-11-04 16:45:38 +08:00 committed by Thomas Monjalon
parent d283059b7c
commit fe685de2b1
2 changed files with 31 additions and 10 deletions
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4
doc/guides/rel_notes/release_2_2.rst
View File

@ -114,6 +114,10 @@ Drivers
in Intel I210 NIC, as EtherType in RX descriptor is in bits 8:10 of
Packet Type and not in the default bits 0:2.
* **igb: Fixed VF start with PF stopped.**
VF needs the PF interrupt support initialized even if not started.
* **ixgbe: Fixed issue with X550 DCB.**
Fixed a DCB issue with x550 where for 8 TCs (Traffic Classes), if a packet

37
drivers/net/e1000/igb_ethdev.c
View File

@ -760,6 +760,13 @@ eth_igb_dev_init(struct rte_eth_dev *eth_dev)
eth_dev->data->port_id, pci_dev->id.vendor_id,
pci_dev->id.device_id);
rte_intr_callback_register(&pci_dev->intr_handle,
eth_igb_interrupt_handler,
(void *)eth_dev);
/* enable uio/vfio intr/eventfd mapping */
rte_intr_enable(&pci_dev->intr_handle);
/* enable support intr */
igb_intr_enable(eth_dev);
@ -1122,13 +1129,15 @@ eth_igb_start(struct rte_eth_dev *dev)
igb_pf_host_configure(dev);
/* check and configure queue intr-vector mapping */
if (dev->data->dev_conf.intr_conf.rxq != 0) {
if ((rte_intr_cap_multiple(intr_handle) ||
!RTE_ETH_DEV_SRIOV(dev).active) &&
dev->data->dev_conf.intr_conf.rxq != 0) {
intr_vector = dev->data->nb_rx_queues;
if (rte_intr_efd_enable(intr_handle, intr_vector))
return -1;
}
if (rte_intr_dp_is_en(intr_handle)) {
if (rte_intr_dp_is_en(intr_handle) && !intr_handle->intr_vec) {
intr_handle->intr_vec =
rte_zmalloc("intr_vec",
dev->data->nb_rx_queues * sizeof(int), 0);
@ -1221,20 +1230,22 @@ eth_igb_start(struct rte_eth_dev *dev)
}
e1000_setup_link(hw);
/* check if lsc interrupt feature is enabled */
if (dev->data->dev_conf.intr_conf.lsc != 0) {
if (rte_intr_allow_others(intr_handle)) {
rte_intr_callback_register(intr_handle,
eth_igb_interrupt_handler,
(void *)dev);
if (rte_intr_allow_others(intr_handle)) {
/* check if lsc interrupt is enabled */
if (dev->data->dev_conf.intr_conf.lsc != 0)
eth_igb_lsc_interrupt_setup(dev);
} else
} else {
rte_intr_callback_unregister(intr_handle,
eth_igb_interrupt_handler,
(void *)dev);
if (dev->data->dev_conf.intr_conf.lsc != 0)
PMD_INIT_LOG(INFO, "lsc won't enable because of"
" no intr multiplex\n");
}
/* check if rxq interrupt is enabled */
if (dev->data->dev_conf.intr_conf.rxq != 0)
if (dev->data->dev_conf.intr_conf.rxq != 0 &&
rte_intr_dp_is_en(intr_handle))
eth_igb_rxq_interrupt_setup(dev);
/* enable uio/vfio intr/eventfd mapping */
@ -1327,6 +1338,12 @@ eth_igb_stop(struct rte_eth_dev *dev)
}
filter_info->twotuple_mask = 0;
if (!rte_intr_allow_others(intr_handle))
/* resume to the default handler */
rte_intr_callback_register(intr_handle,
eth_igb_interrupt_handler,
(void *)dev);
/* Clean datapath event and queue/vec mapping */
rte_intr_efd_disable(intr_handle);
if (intr_handle->intr_vec != NULL) {