search for: xdp_has_frag

...* This should only happen for the first several packets. + * In fact, vq reset can be used here to help us clean up + * the prefilled buffers, but many existing devices do not + * support it, and we don't want to bother users who are + * using xdp normally. + */ + if (!xdp_prog->aux->xdp_has_frags && + (*num_buf > 1 || headroom < virtnet_get_headroom(vi))) { + /* linearize data for XDP */ + xdp_page = xdp_linearize_page(rq, num_buf, + *page, offset, + VIRTIO_XDP_HEADROOM, + len); + + if (!xdp_page) + return NULL; + } else if (unlikely(hea...

...the first several packets. > + * In fact, vq reset can be used here to help us clean up > + * the prefilled buffers, but many existing devices do not > + * support it, and we don't want to bother users who are > + * using xdp normally. > + */ > + if (!xdp_prog->aux->xdp_has_frags && > + (*num_buf > 1 || headroom < virtnet_get_headroom(vi))) { > + /* linearize data for XDP */ > + xdp_page = xdp_linearize_page(rq, num_buf, > + *page, offset, > + VIRTIO_XDP_HEADROOM, > + len); > + > + if (!xdp_page) &g...

...'s worth it, since the use is very specific unless we could > > find a case that wants only one of them. > > It seems receive_small() only need the headroom expanding one. > For receive_mergeable(), it seems we can split into the below cases: > 1. " (!xdp_prog->aux->xdp_has_frags && (num_buf > 1 || headroom < virtnet_get_headroom(vi)))" > case only need linearizing. > 2. other cases only need headroom/tailroom expanding. > > Anyway, it is your call to decide if you want to take this > opportunity do a better refoctoring to virtio_net....

Due to historical reasons, the implementation of XDP in virtio-net is relatively chaotic. For example, the processing of XDP actions has two copies of similar code. Such as page, xdp_page processing, etc. The purpose of this patch set is to refactor these code. Reduce the difficulty of subsequent maintenance. Subsequent developers will not introduce new bugs because of some complex logical

Due to historical reasons, the implementation of XDP in virtio-net is relatively chaotic. For example, the processing of XDP actions has two copies of similar code. Such as page, xdp_page processing, etc. The purpose of this patch set is to refactor these code. Reduce the difficulty of subsequent maintenance. Subsequent developers will not introduce new bugs because of some complex logical

Due to historical reasons, the implementation of XDP in virtio-net is relatively chaotic. For example, the processing of XDP actions has two copies of similar code. Such as page, xdp_page processing, etc. The purpose of this patch set is to refactor these code. Reduce the difficulty of subsequent maintenance. Subsequent developers will not introduce new bugs because of some complex logical