diff options
| author | John Baldwin <jhb@FreeBSD.org> | 2015-11-16 21:36:50 +0000 |
|---|---|---|
| committer | John Baldwin <jhb@FreeBSD.org> | 2015-11-16 21:36:50 +0000 |
| commit | 1941909336df8c7fd37da8b74d52aea786d13de9 (patch) | |
| tree | 9ddb5ebef396cd2f882c77885e8d9847956defc4 /sys/dev/vmware | |
| parent | 2409c5b0cccec7bbc120cc750c2ab34f07017ba5 (diff) | |
Notes
Diffstat (limited to 'sys/dev/vmware')
| -rw-r--r-- | sys/dev/vmware/vmxnet3/if_vmx.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sys/dev/vmware/vmxnet3/if_vmx.c b/sys/dev/vmware/vmxnet3/if_vmx.c index 5faf716acf4d..be249c9fcb51 100644 --- a/sys/dev/vmware/vmxnet3/if_vmx.c +++ b/sys/dev/vmware/vmxnet3/if_vmx.c @@ -510,6 +510,13 @@ vmxnet3_check_version(struct vmxnet3_softc *sc) return (0); } +static int +trunc_powerof2(int val) +{ + + return (1U << (fls(val) - 1)); +} + static void vmxnet3_initial_config(struct vmxnet3_softc *sc) { @@ -520,14 +527,14 @@ vmxnet3_initial_config(struct vmxnet3_softc *sc) nqueue = VMXNET3_DEF_TX_QUEUES; if (nqueue > mp_ncpus) nqueue = mp_ncpus; - sc->vmx_max_ntxqueues = nqueue; + sc->vmx_max_ntxqueues = trunc_powerof2(nqueue); nqueue = vmxnet3_tunable_int(sc, "rxnqueue", vmxnet3_default_rxnqueue); if (nqueue > VMXNET3_MAX_RX_QUEUES || nqueue < 1) nqueue = VMXNET3_DEF_RX_QUEUES; if (nqueue > mp_ncpus) nqueue = mp_ncpus; - sc->vmx_max_nrxqueues = nqueue; + sc->vmx_max_nrxqueues = trunc_powerof2(nqueue); if (vmxnet3_tunable_int(sc, "mq_disable", vmxnet3_mq_disable)) { sc->vmx_max_nrxqueues = 1; |