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From: "Xie, Huawei" <huawei.xie@intel.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Thread-Topic: vring_init bug
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Date: Wed, 9 Sep 2015 03:00:15 +0000
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Subject: [dpdk-dev] vring_init bug
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static inline void=0A=
vring_init(struct vring *vr, unsigned int num, uint8_t *p,=0A=
    unsigned long align)=0A=
{=0A=
    vr->num =3D num;=0A=
    vr->desc =3D (struct vring_desc *) p;=0A=
    vr->avail =3D (struct vring_avail *) (p +=0A=
        num * sizeof(struct vring_desc));=0A=
    vr->used =3D (void *)=0A=
        RTE_ALIGN_CEIL((uintptr_t)(&vr->avail->ring[num]), align);=0A=
}=0A=
=0A=
There is a bug in vr->used calculation. 2 bytes of used_event_idx isn't=0A=
considered. Would submit a fix.=0A=
__u16 available[num];=0A=
__u16 used_event_idx;=0A=
=0A=