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Tsirkin" , Luigi Rizzo , Giuseppe Lettieri , Vincenzo Maffione , Andrew Melnychenko , Yuri Benditovich , Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost Cc: qemu-devel@nongnu.org, Akihiko Odaki X-Mailer: b4 0.14-dev-fd6e3 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::22f; envelope-from=akihiko.odaki@daynix.com; helo=mail-oi1-x22f.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @daynix-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1720933935760116600 If ebpf-rss-fds is specified but we fail to use, we should not fall back to loading eBPF programs by ourselves as such makes the situation complicated. Suggested-by: Daniel P. Berrang=C3=A9 Signed-off-by: Akihiko Odaki --- hw/net/virtio-net.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index e779ba2df428..2f0a4f2aabf7 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -1361,21 +1361,21 @@ static void virtio_net_disable_rss(VirtIONet *n) virtio_net_commit_rss_config(n); } =20 -static bool virtio_net_load_ebpf_fds(VirtIONet *n) +static bool virtio_net_load_ebpf_fds(VirtIONet *n, Error **errp) { int fds[EBPF_RSS_MAX_FDS] =3D { [0 ... EBPF_RSS_MAX_FDS - 1] =3D -1}; int ret =3D true; int i =3D 0; =20 if (n->nr_ebpf_rss_fds !=3D EBPF_RSS_MAX_FDS) { - warn_report("Expected %d file descriptors but got %d", - EBPF_RSS_MAX_FDS, n->nr_ebpf_rss_fds); + error_setg(errp, "Expected %d file descriptors but got %d", + EBPF_RSS_MAX_FDS, n->nr_ebpf_rss_fds); return false; } =20 for (i =3D 0; i < n->nr_ebpf_rss_fds; i++) { fds[i] =3D monitor_fd_param(monitor_cur(), n->ebpf_rss_fds[i], - &error_warn); + errp); if (fds[i] < 0) { ret =3D false; goto exit; @@ -1394,17 +1394,11 @@ exit: return ret; } =20 -static bool virtio_net_load_ebpf(VirtIONet *n) +static bool virtio_net_load_ebpf(VirtIONet *n, Error **errp) { - bool ret =3D false; - - if (virtio_net_attach_ebpf_to_backend(n->nic, -1)) { - if (!(n->ebpf_rss_fds && virtio_net_load_ebpf_fds(n))) { - ret =3D ebpf_rss_load(&n->ebpf_rss); - } - } - - return ret; + return virtio_net_attach_ebpf_to_backend(n->nic, -1) && + (n->ebpf_rss_fds ? virtio_net_load_ebpf_fds(n, errp) : + ebpf_rss_load(&n->ebpf_rss)); } =20 static void virtio_net_unload_ebpf(VirtIONet *n) @@ -3805,7 +3799,7 @@ static void virtio_net_device_realize(DeviceState *de= v, Error **errp) if (virtio_has_feature(n->host_features.on_bits | n->host_features.auto_bits, VIRTIO_NET_F_RSS)) { - virtio_net_load_ebpf(n); + virtio_net_load_ebpf(n, errp); } } =20 --=20 2.45.2