Add macro to disable legacy vring functions.
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| @@ -135,6 +135,8 @@ struct vring { · 134 unmodified lines | |||
| 135 | #define VRING_USED_ALIGN_SIZE 4 | 135 | #define VRING_USED_ALIGN_SIZE 4 |
| 136 | #define VRING_DESC_ALIGN_SIZE 16 | 136 | #define VRING_DESC_ALIGN_SIZE 16 |
| 137 | 137 | ||
| 138 | #ifndef VIRTIO_RING_NO_LEGACY | ||
| 139 | |||
| 138 | /* The standard layout for the ring is a continuous chunk of memory which looks | 140 | /* The standard layout for the ring is a continuous chunk of memory which looks |
| 139 | * like this. We assume num is a power of 2. | 141 | * like this. We assume num is a power of 2. |
| 140 | * | 142 | * |
| @@ -181,6 +183,8 @@ static inline unsigned vring_size(unsigned int num, unsigned long align) · 40 unmodified lines | |||
| 181 | + sizeof(__virtio16) * 3 + sizeof(struct vring_used_elem) * num; | 183 | + sizeof(__virtio16) * 3 + sizeof(struct vring_used_elem) * num; |
| 182 | } | 184 | } |
| 183 | 185 | ||
| 186 | #endif /* VIRTIO_RING_NO_LEGACY */ | ||
| 187 | |||
| 184 | /* The following is used with USED_EVENT_IDX and AVAIL_EVENT_IDX */ | 188 | /* The following is used with USED_EVENT_IDX and AVAIL_EVENT_IDX */ |
| 185 | /* Assuming a given event_idx value from the other side, if | 189 | /* Assuming a given event_idx value from the other side, if |
| 186 | * we have just incremented index from old to new_idx, | 190 | * we have just incremented index from old to new_idx, |