Messages in this thread | | | Subject | Re: [PATCH net-next RFC 1/5] vhost: split out ring head fetching logic | From | Jason Wang <> | Date | Mon, 25 Sep 2017 10:03:14 +0800 |
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On 2017年09月22日 16:31, Stefan Hajnoczi wrote: > On Fri, Sep 22, 2017 at 04:02:31PM +0800, Jason Wang wrote: >> +/* This looks in the virtqueue and for the first available buffer, and converts >> + * it to an iovec for convenient access. Since descriptors consist of some >> + * number of output then some number of input descriptors, it's actually two >> + * iovecs, but we pack them into one and note how many of each there were. >> + * >> + * This function returns the descriptor number found, or vq->num (which is >> + * never a valid descriptor number) if none was found. A negative code is >> + * returned on error. */ >> +int __vhost_get_vq_desc(struct vhost_virtqueue *vq, >> + struct iovec iov[], unsigned int iov_size, >> + unsigned int *out_num, unsigned int *in_num, >> + struct vhost_log *log, unsigned int *log_num, >> + __virtio16 head) > [...] >> +int vhost_get_vq_desc(struct vhost_virtqueue *vq, >> + struct iovec iov[], unsigned int iov_size, >> + unsigned int *out_num, unsigned int *in_num, >> + struct vhost_log *log, unsigned int *log_num) > Please document vhost_get_vq_desc(). > > Please also explain the difference between __vhost_get_vq_desc() and > vhost_get_vq_desc() in the documentation.
Right, will document this in next version.
Thanks
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