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i40e: fix VSI allocation for VMDq

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It fixes the issue of trying to allocate more VSIs for VMDq than
hardware remaining. It adds a check of the hardware remaining
before allocating VSIs for VMDq.

Fixes: c80707a0fd ("i40e: fix VMDq pool limit")

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
This commit is contained in:
Helin Zhang 2015-11-12 15:09:03 +08:00 committed by Thomas Monjalon
parent 6b6a94ee17
commit 50687c312a
1 changed files with 5 additions and 2 deletions
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7
drivers/net/i40e/i40e_ethdev.c
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@ -3118,13 +3118,16 @@ i40e_pf_parameter_init(struct rte_eth_dev *dev)
pf->vmdq_nb_qps = 0;
pf->max_nb_vmdq_vsi = 0;
if (hw->func_caps.vmdq) {
if (qp_count < hw->func_caps.num_tx_qp) {
if (qp_count < hw->func_caps.num_tx_qp &&
vsi_count < hw->func_caps.num_vsis) {
pf->max_nb_vmdq_vsi = (hw->func_caps.num_tx_qp -
qp_count) / pf->vmdq_nb_qp_max;
/* Limit the maximum number of VMDq vsi to the maximum
* ethdev can support
*/
pf->max_nb_vmdq_vsi = RTE_MIN(pf->max_nb_vmdq_vsi,
hw->func_caps.num_vsis - vsi_count);
pf->max_nb_vmdq_vsi = RTE_MIN(pf->max_nb_vmdq_vsi,
ETH_64_POOLS);
if (pf->max_nb_vmdq_vsi) {
@ -3140,7 +3143,7 @@ i40e_pf_parameter_init(struct rte_eth_dev *dev)
"VMDq");
}
} else {
PMD_DRV_LOG(INFO, "No queue left for VMDq");
PMD_DRV_LOG(INFO, "No queue or VSI left for VMDq");
}
}
qp_count += pf->vmdq_nb_qps * pf->max_nb_vmdq_vsi;