diff options
| author | Max Krummenacher <max.krummenacher@toradex.com> | 2024-02-29 21:24:13 +0100 |
|---|---|---|
| committer | Max Krummenacher <max.krummenacher@toradex.com> | 2024-02-29 21:24:26 +0100 |
| commit | 99e9ab88844a2a2e1c048264315eb0d72eb0bf88 (patch) | |
| tree | 0d89b05b1816b8cac1be77ac9b3c297762502e67 /net/vmw_vsock/virtio_transport_common.c | |
| parent | 756e3199ba82d68ba07e5acf555d13aaa1da3da1 (diff) | |
| parent | d761b18f6bc83bce94251467e3c0974243318456 (diff) | |
Merge remote-tracking branch 'fslc/5.15-2.2.x-imx' into toradex_5.15-2.2.x-imx
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Conflicts:
drivers/gpu/drm/bridge/lontium-lt8912b.c
drivers/usb/dwc3/drd.c
Diffstat (limited to 'net/vmw_vsock/virtio_transport_common.c')
| -rw-r--r-- | net/vmw_vsock/virtio_transport_common.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c index 3a12aee33e92..b490f832439e 100644 --- a/net/vmw_vsock/virtio_transport_common.c +++ b/net/vmw_vsock/virtio_transport_common.c @@ -355,6 +355,8 @@ virtio_transport_stream_do_dequeue(struct vsock_sock *vsk, struct virtio_vsock_pkt *pkt; size_t bytes, total = 0; u32 free_space; + u32 fwd_cnt_delta; + bool low_rx_bytes; int err = -EFAULT; spin_lock_bh(&vvs->rx_lock); @@ -386,7 +388,10 @@ virtio_transport_stream_do_dequeue(struct vsock_sock *vsk, } } - free_space = vvs->buf_alloc - (vvs->fwd_cnt - vvs->last_fwd_cnt); + fwd_cnt_delta = vvs->fwd_cnt - vvs->last_fwd_cnt; + free_space = vvs->buf_alloc - fwd_cnt_delta; + low_rx_bytes = (vvs->rx_bytes < + sock_rcvlowat(sk_vsock(vsk), 0, INT_MAX)); spin_unlock_bh(&vvs->rx_lock); @@ -396,9 +401,11 @@ virtio_transport_stream_do_dequeue(struct vsock_sock *vsk, * too high causes extra messages. Too low causes transmitter * stalls. As stalls are in theory more expensive than extra * messages, we set the limit to a high value. TODO: experiment - * with different values. + * with different values. Also send credit update message when + * number of bytes in rx queue is not enough to wake up reader. */ - if (free_space < VIRTIO_VSOCK_MAX_PKT_BUF_SIZE) + if (fwd_cnt_delta && + (free_space < VIRTIO_VSOCK_MAX_PKT_BUF_SIZE || low_rx_bytes)) virtio_transport_send_credit_update(vsk); return total; @@ -565,7 +572,7 @@ static s64 virtio_transport_has_space(struct vsock_sock *vsk) struct virtio_vsock_sock *vvs = vsk->trans; s64 bytes; - bytes = vvs->peer_buf_alloc - (vvs->tx_cnt - vvs->peer_fwd_cnt); + bytes = (s64)vvs->peer_buf_alloc - (vvs->tx_cnt - vvs->peer_fwd_cnt); if (bytes < 0) bytes = 0; |