mirror of https://github.com/xemu-project/xemu.git
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEIV1G9IJGaJ7HfzVi7wSWWzmNYhEFAmasTgwACgkQ7wSWWzmN YhFUtAgAq45v7fQJ7cKKwRam/VrIkxT5cM59ODwzLSL9kPWfL6f/bJ7xM/zvLyvn LNBXFWWu+eNKA73f95cckZwaqZ4U6giGbiesCACn1IpgVtieLS+Lq78jsifKIAsR yxFvbT9oLhU0dZ1Up3+isc6V+jeAE4ZYu4KOiIt7PscTEzkJl+vSUjN4X9rRVtUD PzONUacL6MoTJtX8UZJZXNzLN9JTsN39Gx+LSDGQ27MDmDvE3R9BW+T0ZgF9JQZ7 wnrL5sharqF3gxa7X55fPBI1qwY5gWcH0yyJpRdM8guA13vhtvlrhNSypip9eKWi HtPHUTKEB5YOvF236WRiuQPIm/GNpA== =7HGN -----END PGP SIGNATURE----- Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging # -----BEGIN PGP SIGNATURE----- # # iQEzBAABCAAdFiEEIV1G9IJGaJ7HfzVi7wSWWzmNYhEFAmasTgwACgkQ7wSWWzmN # YhFUtAgAq45v7fQJ7cKKwRam/VrIkxT5cM59ODwzLSL9kPWfL6f/bJ7xM/zvLyvn # LNBXFWWu+eNKA73f95cckZwaqZ4U6giGbiesCACn1IpgVtieLS+Lq78jsifKIAsR # yxFvbT9oLhU0dZ1Up3+isc6V+jeAE4ZYu4KOiIt7PscTEzkJl+vSUjN4X9rRVtUD # PzONUacL6MoTJtX8UZJZXNzLN9JTsN39Gx+LSDGQ27MDmDvE3R9BW+T0ZgF9JQZ7 # wnrL5sharqF3gxa7X55fPBI1qwY5gWcH0yyJpRdM8guA13vhtvlrhNSypip9eKWi # HtPHUTKEB5YOvF236WRiuQPIm/GNpA== # =7HGN # -----END PGP SIGNATURE----- # gpg: Signature made Fri 02 Aug 2024 01:10:04 PM AEST # gpg: using RSA key 215D46F48246689EC77F3562EF04965B398D6211 # gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [undefined] # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211 * tag 'net-pull-request' of https://github.com/jasowang/qemu: net: Reinstate '-net nic, model=help' output as documented in man page net: update netdev stream man page with the reconnect parameter net: update netdev dgram man page with unix socket net: update netdev stream man page with unix socket net: update netdev stream/dgram man page virtio-net: Fix network stall at the host side waiting for kick virtio-net: Ensure queue index fits with RSS rtl8139: Fix behaviour for old kernels. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
commit
c4d242501a
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|
@ -2738,7 +2738,11 @@ static void rtl8139_io_writeb(void *opaque, uint8_t addr, uint32_t val)
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}
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break;
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case RxConfig:
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DPRINTF("RxConfig write(b) val=0x%02x\n", val);
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rtl8139_RxConfig_write(s,
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(rtl8139_RxConfig_read(s) & 0xFFFFFF00) | val);
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break;
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default:
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DPRINTF("not implemented write(b) addr=0x%x val=0x%02x\n", addr,
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val);
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|
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@ -1641,24 +1641,28 @@ static bool virtio_net_can_receive(NetClientState *nc)
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static int virtio_net_has_buffers(VirtIONetQueue *q, int bufsize)
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{
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int opaque;
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unsigned int in_bytes;
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VirtIONet *n = q->n;
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if (virtio_queue_empty(q->rx_vq) ||
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(n->mergeable_rx_bufs &&
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!virtqueue_avail_bytes(q->rx_vq, bufsize, 0))) {
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virtio_queue_set_notification(q->rx_vq, 1);
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/* To avoid a race condition where the guest has made some buffers
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* available after the above check but before notification was
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* enabled, check for available buffers again.
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*/
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if (virtio_queue_empty(q->rx_vq) ||
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(n->mergeable_rx_bufs &&
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!virtqueue_avail_bytes(q->rx_vq, bufsize, 0))) {
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while (virtio_queue_empty(q->rx_vq) || n->mergeable_rx_bufs) {
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opaque = virtqueue_get_avail_bytes(q->rx_vq, &in_bytes, NULL,
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bufsize, 0);
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/* Buffer is enough, disable notifiaction */
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if (bufsize <= in_bytes) {
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break;
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}
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if (virtio_queue_enable_notification_and_check(q->rx_vq, opaque)) {
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/* Guest has added some buffers, try again */
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continue;
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} else {
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return 0;
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}
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}
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virtio_queue_set_notification(q->rx_vq, 0);
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return 1;
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}
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@ -1905,7 +1909,8 @@ static ssize_t virtio_net_receive_rcu(NetClientState *nc, const uint8_t *buf,
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if (!no_rss && n->rss_data.enabled && n->rss_data.enabled_software_rss) {
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int index = virtio_net_process_rss(nc, buf, size, &extra_hdr);
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if (index >= 0) {
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NetClientState *nc2 = qemu_get_subqueue(n->nic, index);
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NetClientState *nc2 =
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qemu_get_subqueue(n->nic, index % n->curr_queue_pairs);
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return virtio_net_receive_rcu(nc2, buf, size, true);
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}
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}
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@ -744,6 +744,60 @@ int virtio_queue_empty(VirtQueue *vq)
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}
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}
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static bool virtio_queue_split_poll(VirtQueue *vq, unsigned shadow_idx)
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{
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if (unlikely(!vq->vring.avail)) {
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return false;
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}
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return (uint16_t)shadow_idx != vring_avail_idx(vq);
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}
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static bool virtio_queue_packed_poll(VirtQueue *vq, unsigned shadow_idx)
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{
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VRingPackedDesc desc;
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VRingMemoryRegionCaches *caches;
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if (unlikely(!vq->vring.desc)) {
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return false;
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}
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caches = vring_get_region_caches(vq);
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if (!caches) {
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return false;
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}
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vring_packed_desc_read(vq->vdev, &desc, &caches->desc,
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shadow_idx, true);
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return is_desc_avail(desc.flags, vq->shadow_avail_wrap_counter);
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}
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static bool virtio_queue_poll(VirtQueue *vq, unsigned shadow_idx)
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{
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if (virtio_device_disabled(vq->vdev)) {
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return false;
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}
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if (virtio_vdev_has_feature(vq->vdev, VIRTIO_F_RING_PACKED)) {
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return virtio_queue_packed_poll(vq, shadow_idx);
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} else {
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return virtio_queue_split_poll(vq, shadow_idx);
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}
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}
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bool virtio_queue_enable_notification_and_check(VirtQueue *vq,
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int opaque)
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{
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virtio_queue_set_notification(vq, 1);
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if (opaque >= 0) {
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return virtio_queue_poll(vq, (unsigned)opaque);
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} else {
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return false;
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}
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}
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static void virtqueue_unmap_sg(VirtQueue *vq, const VirtQueueElement *elem,
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unsigned int len)
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{
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@ -1442,9 +1496,9 @@ err:
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goto done;
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}
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void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
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unsigned int *out_bytes,
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unsigned max_in_bytes, unsigned max_out_bytes)
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int virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
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unsigned int *out_bytes, unsigned max_in_bytes,
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unsigned max_out_bytes)
|
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{
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uint16_t desc_size;
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VRingMemoryRegionCaches *caches;
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@ -1477,7 +1531,7 @@ void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
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caches);
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}
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return;
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return (int)vq->shadow_avail_idx;
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err:
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if (in_bytes) {
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*in_bytes = 0;
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@ -1485,6 +1539,8 @@ err:
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if (out_bytes) {
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*out_bytes = 0;
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}
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return -1;
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}
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int virtqueue_avail_bytes(VirtQueue *vq, unsigned int in_bytes,
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|
|
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|
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@ -273,9 +273,13 @@ void qemu_put_virtqueue_element(VirtIODevice *vdev, QEMUFile *f,
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VirtQueueElement *elem);
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int virtqueue_avail_bytes(VirtQueue *vq, unsigned int in_bytes,
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unsigned int out_bytes);
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void virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
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unsigned int *out_bytes,
|
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unsigned max_in_bytes, unsigned max_out_bytes);
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/**
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* Return <0 on error or an opaque >=0 to pass to
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* virtio_queue_enable_notification_and_check on success.
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*/
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int virtqueue_get_avail_bytes(VirtQueue *vq, unsigned int *in_bytes,
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unsigned int *out_bytes, unsigned max_in_bytes,
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unsigned max_out_bytes);
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void virtio_notify_irqfd(VirtIODevice *vdev, VirtQueue *vq);
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void virtio_notify(VirtIODevice *vdev, VirtQueue *vq);
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@ -309,6 +313,15 @@ int virtio_queue_ready(VirtQueue *vq);
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int virtio_queue_empty(VirtQueue *vq);
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/**
|
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* Enable notification and check whether guest has added some
|
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* buffers since last call to virtqueue_get_avail_bytes.
|
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*
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* @opaque: value returned from virtqueue_get_avail_bytes
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*/
|
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bool virtio_queue_enable_notification_and_check(VirtQueue *vq,
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||||
int opaque);
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||||
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||||
void virtio_queue_set_shadow_avail_idx(VirtQueue *vq, uint16_t idx);
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||||
|
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/* Host binding interface. */
|
||||
|
|
|
|||
25
net/net.c
25
net/net.c
|
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@ -1139,6 +1139,21 @@ NICInfo *qemu_find_nic_info(const char *typename, bool match_default,
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|||
return NULL;
|
||||
}
|
||||
|
||||
static bool is_nic_model_help_option(const char *model)
|
||||
{
|
||||
if (model && is_help_option(model)) {
|
||||
/*
|
||||
* Trigger the help output by instantiating the hash table which
|
||||
* will gather tha available models as they get registered.
|
||||
*/
|
||||
if (!nic_model_help) {
|
||||
nic_model_help = g_hash_table_new_full(g_str_hash, g_str_equal,
|
||||
g_free, NULL);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/* "I have created a device. Please configure it if you can" */
|
||||
bool qemu_configure_nic_device(DeviceState *dev, bool match_default,
|
||||
|
|
@ -1722,6 +1737,12 @@ void net_check_clients(void)
|
|||
|
||||
static int net_init_client(void *dummy, QemuOpts *opts, Error **errp)
|
||||
{
|
||||
const char *model = qemu_opt_get_del(opts, "model");
|
||||
|
||||
if (is_nic_model_help_option(model)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
return net_client_init(opts, false, errp);
|
||||
}
|
||||
|
||||
|
|
@ -1778,9 +1799,7 @@ static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp)
|
|||
memset(ni, 0, sizeof(*ni));
|
||||
ni->model = qemu_opt_get_del(opts, "model");
|
||||
|
||||
if (!nic_model_help && !g_strcmp0(ni->model, "help")) {
|
||||
nic_model_help = g_hash_table_new_full(g_str_hash, g_str_equal,
|
||||
g_free, NULL);
|
||||
if (is_nic_model_help_option(ni->model)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
189
qemu-options.hx
189
qemu-options.hx
|
|
@ -3353,6 +3353,195 @@ SRST
|
|||
-device e1000,netdev=n1,mac=52:54:00:12:34:56 \\
|
||||
-netdev socket,id=n1,mcast=239.192.168.1:1102,localaddr=1.2.3.4
|
||||
|
||||
``-netdev stream,id=str[,server=on|off],addr.type=inet,addr.host=host,addr.port=port[,to=maxport][,numeric=on|off][,keep-alive=on|off][,mptcp=on|off][,addr.ipv4=on|off][,addr.ipv6=on|off][,reconnect=seconds]``
|
||||
Configure a network backend to connect to another QEMU virtual machine or a proxy using a TCP/IP socket.
|
||||
|
||||
``server=on|off``
|
||||
if ``on`` create a server socket
|
||||
|
||||
``addr.host=host,addr.port=port``
|
||||
socket address to listen on (server=on) or connect to (server=off)
|
||||
|
||||
``to=maxport``
|
||||
if present, this is range of possible addresses, with port between ``port`` and ``maxport``.
|
||||
|
||||
``numeric=on|off``
|
||||
if ``on`` ``host`` and ``port`` are guaranteed to be numeric, otherwise a name resolution should be attempted (default: ``off``)
|
||||
|
||||
``keep-alive=on|off``
|
||||
enable keep-alive when connecting to this socket. Not supported for passive sockets.
|
||||
|
||||
``mptcp=on|off``
|
||||
enable multipath TCP
|
||||
|
||||
``ipv4=on|off``
|
||||
whether to accept IPv4 addresses, default to try both IPv4 and IPv6
|
||||
|
||||
``ipv6=on|off``
|
||||
whether to accept IPv6 addresses, default to try both IPv4 and IPv6
|
||||
|
||||
``reconnect=seconds``
|
||||
for a client socket, if a socket is disconnected, then attempt a reconnect after the given number of seconds.
|
||||
Setting this to zero disables this function. (default: 0)
|
||||
|
||||
Example (two guests connected using a TCP/IP socket):
|
||||
|
||||
.. parsed-literal::
|
||||
|
||||
# first VM
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:56 \\
|
||||
-netdev stream,id=net0,server=on,addr.type=inet,addr.host=localhost,addr.port=1234
|
||||
# second VM
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:57 \\
|
||||
-netdev stream,id=net0,server=off,addr.type=inet,addr.host=localhost,addr.port=1234,reconnect=5
|
||||
|
||||
``-netdev stream,id=str[,server=on|off],addr.type=unix,addr.path=path[,abstract=on|off][,tight=on|off][,reconnect=seconds]``
|
||||
Configure a network backend to connect to another QEMU virtual machine or a proxy using a stream oriented unix domain socket.
|
||||
|
||||
``server=on|off``
|
||||
if ``on`` create a server socket
|
||||
|
||||
``addr.path=path``
|
||||
filesystem path to use
|
||||
|
||||
``abstract=on|off``
|
||||
if ``on``, this is a Linux abstract socket address.
|
||||
|
||||
``tight=on|off``
|
||||
if false, pad an abstract socket address with enough null bytes to make it fill struct sockaddr_un member sun_path.
|
||||
|
||||
``reconnect=seconds``
|
||||
for a client socket, if a socket is disconnected, then attempt a reconnect after the given number of seconds.
|
||||
Setting this to zero disables this function. (default: 0)
|
||||
|
||||
Example (using passt as a replacement of -netdev user):
|
||||
|
||||
.. parsed-literal::
|
||||
|
||||
# start passt server as a non privileged user
|
||||
passt
|
||||
UNIX domain socket bound at /tmp/passt_1.socket
|
||||
# start QEMU to connect to passt
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0 \\
|
||||
-netdev stream,id=net0,server=off,addr.type=unix,addr.path=/tmp/passt_1.socket
|
||||
|
||||
Example (two guests connected using a stream oriented unix domain socket):
|
||||
|
||||
.. parsed-literal::
|
||||
|
||||
# first VM
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:56 \\
|
||||
netdev stream,id=net0,server=on,addr.type=unix,addr.path=/tmp/qemu0
|
||||
# second VM
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:57 \\
|
||||
-netdev stream,id=net0,server=off,addr.type=unix,addr.path=/tmp/qemu0,reconnect=5
|
||||
|
||||
``-netdev stream,id=str[,server=on|off],addr.type=fd,addr.str=file-descriptor[,reconnect=seconds]``
|
||||
Configure a network backend to connect to another QEMU virtual machine or a proxy using a stream oriented socket file descriptor.
|
||||
|
||||
``server=on|off``
|
||||
if ``on`` create a server socket
|
||||
|
||||
``addr.str=file-descriptor``
|
||||
file descriptor number to use as a socket
|
||||
|
||||
``reconnect=seconds``
|
||||
for a client socket, if a socket is disconnected, then attempt a reconnect after the given number of seconds.
|
||||
Setting this to zero disables this function. (default: 0)
|
||||
|
||||
``-netdev dgram,id=str,remote.type=inet,remote.host=maddr,remote.port=port[,local.type=inet,local.host=addr]``
|
||||
Configure a network backend to connect to a multicast address.
|
||||
|
||||
``remote.host=maddr,remote.port=port``
|
||||
multicast address
|
||||
|
||||
``local.host=addr``
|
||||
specify the host address to send packets from
|
||||
|
||||
Example:
|
||||
|
||||
.. parsed-literal::
|
||||
|
||||
# launch one QEMU instance
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:56 \\
|
||||
-netdev dgram,id=net0,remote.type=inet,remote.host=224.0.0.1,remote.port=1234
|
||||
# launch another QEMU instance on same "bus"
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:57 \\
|
||||
-netdev dgram,id=net0,remote.type=inet,remote.host=224.0.0.1,remote.port=1234
|
||||
# launch yet another QEMU instance on same "bus"
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:58 \\
|
||||
-netdev dgram,id=net0,remote.type=inet,remote.host=224.0.0.1,remote.port=1234
|
||||
|
||||
``-netdev dgram,id=str,remote.type=inet,remote.host=maddr,remote.port=port[,local.type=fd,local.str=file-descriptor]``
|
||||
Configure a network backend to connect to a multicast address using a UDP socket file descriptor.
|
||||
|
||||
``remote.host=maddr,remote.port=port``
|
||||
multicast address
|
||||
|
||||
``local.str=file-descriptor``
|
||||
File descriptor to use to send packets
|
||||
|
||||
``-netdev dgram,id=str,local.type=inet,local.host=addr,local.port=port[,remote.type=inet,remote.host=addr,remote.port=port]``
|
||||
Configure a network backend to connect to another QEMU virtual
|
||||
machine or a proxy using a datagram oriented unix domain socket.
|
||||
|
||||
``local.host=addr,local.port=port``
|
||||
IP address to use to send the packets from
|
||||
|
||||
``remote.host=addr,remote.port=port``
|
||||
Destination IP address
|
||||
|
||||
Example (two guests connected using an UDP/IP socket):
|
||||
|
||||
.. parsed-literal::
|
||||
|
||||
# first VM
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:56 \\
|
||||
-netdev dgram,id=net0,local.type=inet,local.host=localhost,local.port=1234,remote.type=inet,remote.host=localhost,remote.port=1235
|
||||
# second VM
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:56 \\
|
||||
-netdev dgram,id=net0,local.type=inet,local.host=localhost,local.port=1235,remote.type=inet,remote.host=localhost,remote.port=1234
|
||||
|
||||
``-netdev dgram,id=str,local.type=unix,local.path=path[,remote.type=unix,remote.path=path]``
|
||||
Configure a network backend to connect to another QEMU virtual
|
||||
machine or a proxy using a datagram oriented unix socket.
|
||||
|
||||
``local.path=path``
|
||||
filesystem path to use to bind the socket
|
||||
|
||||
``remote.path=path``
|
||||
filesystem path to use as a destination (see sendto(2))
|
||||
|
||||
Example (two guests connected using an UDP/UNIX socket):
|
||||
|
||||
.. parsed-literal::
|
||||
|
||||
# first VM
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:56 \\
|
||||
-netdev dgram,id=net0,local.type=unix,local.path=/tmp/qemu0,remote.type=unix,remote.path=/tmp/qemu1
|
||||
# second VM
|
||||
|qemu_system| linux.img \\
|
||||
-device virtio-net,netdev=net0,mac=52:54:00:12:34:57 \\
|
||||
-netdev dgram,id=net0,local.type=unix,local.path=/tmp/qemu1,remote.type=unix,remote.path=/tmp/qemu0
|
||||
|
||||
``-netdev dgram,id=str,local.type=fd,local.str=file-descriptor``
|
||||
Configure a network backend to connect to another QEMU virtual
|
||||
machine or a proxy using a datagram oriented socket file descriptor.
|
||||
|
||||
``local.str=file-descriptor``
|
||||
File descriptor to use to send packets
|
||||
|
||||
``-netdev l2tpv3,id=id,src=srcaddr,dst=dstaddr[,srcport=srcport][,dstport=dstport],txsession=txsession[,rxsession=rxsession][,ipv6=on|off][,udp=on|off][,cookie64=on|off][,counter=on|off][,pincounter=on|off][,txcookie=txcookie][,rxcookie=rxcookie][,offset=offset]``
|
||||
Configure a L2TPv3 pseudowire host network backend. L2TPv3 (RFC3931)
|
||||
is a popular protocol to transport Ethernet (and other Layer 2) data
|
||||
|
|
|
|||
Loading…
Reference in New Issue