Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: features, fixes, cleanups

Features:

SR-IOV emulation for pci
virtio-mem-pci support for s390
interleave support for cxl
big endian support for vdpa svq
new QAPI events for vhost-user

Also vIOMMU reset order fixups are in.
Fixes, cleanups all over the place.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (41 commits)
  docs/devel/reset: Document reset expectations for DMA and IOMMU
  hw/vfio/common: Add a trace point in vfio_reset_handler
  hw/arm/smmuv3: Move reset to exit phase
  hw/i386/intel-iommu: Migrate to 3-phase reset
  hw/virtio/virtio-iommu: Migrate to 3-phase reset
  vhost-user-snd: correct the calculation of config_size
  net: vhost-user: add QAPI events to report connection state
  hw/virtio/virtio-nsm: Respond with correct length
  vdpa: Fix endian bugs in shadow virtqueue
  MAINTAINERS: add more files to `vhost`
  cryptodev/vhost: allocate CryptoDevBackendVhost using g_mem0()
  vhost-iova-tree: Update documentation
  vhost-iova-tree, svq: Implement GPA->IOVA & partial IOVA->HVA trees
  vhost-iova-tree: Implement an IOVA-only tree
  amd_iommu: Use correct bitmask to set capability BAR
  amd_iommu: Use correct DTE field for interrupt passthrough
  hw/virtio: reset virtio balloon stats on machine reset
  mem/cxl_type3: support 3, 6, 12 and 16 interleave ways
  hw/mem/cxl_type3: Ensure errp is set on realization failure
  hw/mem/cxl_type3: Fix special_ops memory leak on msix_init_exclusive_bar() failure
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 17 insertions, 26 deletions

diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index d847429b1c..de87cfadff 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -1352,18 +1352,25 @@ exit:
 
 static bool virtio_net_load_ebpf(VirtIONet *n, Error **errp)
 {
-    bool ret = false;
+    if (!virtio_net_attach_ebpf_to_backend(n->nic, -1)) {
+        return true;
+    }
 
-    if (virtio_net_attach_ebpf_to_backend(n->nic, -1)) {
-        trace_virtio_net_rss_load(n, n->nr_ebpf_rss_fds, n->ebpf_rss_fds);
-        if (n->ebpf_rss_fds) {
-            ret = virtio_net_load_ebpf_fds(n, errp);
-        } else {
-            ret = ebpf_rss_load(&n->ebpf_rss, errp);
-        }
+    trace_virtio_net_rss_load(n, n->nr_ebpf_rss_fds, n->ebpf_rss_fds);
+
+    /*
+     * If user explicitly gave QEMU RSS FDs to use, then
+     * failing to use them must be considered a fatal
+     * error. If no RSS FDs were provided, QEMU is trying
+     * eBPF on a "best effort" basis only, so report a
+     * warning and allow fallback to software RSS.
+     */
+    if (n->ebpf_rss_fds) {
+        return virtio_net_load_ebpf_fds(n, errp);
     }
 
-    return ret;
+    ebpf_rss_load(&n->ebpf_rss, &error_warn);
+    return true;
 }
 
 static void virtio_net_unload_ebpf(VirtIONet *n)
@@ -3913,23 +3920,7 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp)
     net_rx_pkt_init(&n->rx_pkt);
 
     if (virtio_has_feature(n->host_features, VIRTIO_NET_F_RSS)) {
-        Error *err = NULL;
-        if (!virtio_net_load_ebpf(n, &err)) {
-            /*
-             * If user explicitly gave QEMU RSS FDs to use, then
-             * failing to use them must be considered a fatal
-             * error. If no RSS FDs were provided, QEMU is trying
-             * eBPF on a "best effort" basis only, so report a
-             * warning and allow fallback to software RSS.
-             */
-            if (n->ebpf_rss_fds) {
-                error_propagate(errp, err);
-            } else {
-                warn_report("unable to load eBPF RSS: %s",
-                            error_get_pretty(err));
-                error_free(err);
-            }
-        }
+        virtio_net_load_ebpf(n, errp);
     }
 }