diff options
| author | Luigi Leonardi <luigi.leonardi@outlook.com> | 2024-07-30 21:43:07 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-08-02 09:20:28 +0100 |
| commit | e6ab45005772014ce49a693a63f928203c0cbbb0 (patch) | |
| tree | e9ea6a13aec5f4a2df45f5ebea0e27f601d7c792 /net/vmw_vsock/virtio_transport_common.c | |
| parent | 744500d81f81346b4d442809c0511684bb28c829 (diff) | |
vsock/virtio: add SIOCOUTQ support for all virtio based transports
Introduce support for virtio_transport_unsent_bytes
ioctl for virtio_transport, vhost_vsock and vsock_loopback.
For all transports the unsent bytes counter is incremented
in virtio_transport_get_credit.
In virtio_transport (G2H) and in vhost-vsock (H2G) the counter
is decremented when the skbuff is consumed. In vsock_loopback the
same skbuff is passed from the transmitter to the receiver, so
the counter is decremented before queuing the skbuff to the
receiver.
Signed-off-by: Luigi Leonardi <luigi.leonardi@outlook.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/vmw_vsock/virtio_transport_common.c')
| -rw-r--r-- | net/vmw_vsock/virtio_transport_common.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c index 16ff976a86e3..884ee128851e 100644 --- a/net/vmw_vsock/virtio_transport_common.c +++ b/net/vmw_vsock/virtio_transport_common.c @@ -463,6 +463,26 @@ void virtio_transport_inc_tx_pkt(struct virtio_vsock_sock *vvs, struct sk_buff * } EXPORT_SYMBOL_GPL(virtio_transport_inc_tx_pkt); +void virtio_transport_consume_skb_sent(struct sk_buff *skb, bool consume) +{ + struct sock *s = skb->sk; + + if (s && skb->len) { + struct vsock_sock *vs = vsock_sk(s); + struct virtio_vsock_sock *vvs; + + vvs = vs->trans; + + spin_lock_bh(&vvs->tx_lock); + vvs->bytes_unsent -= skb->len; + spin_unlock_bh(&vvs->tx_lock); + } + + if (consume) + consume_skb(skb); +} +EXPORT_SYMBOL_GPL(virtio_transport_consume_skb_sent); + u32 virtio_transport_get_credit(struct virtio_vsock_sock *vvs, u32 credit) { u32 ret; @@ -475,6 +495,7 @@ u32 virtio_transport_get_credit(struct virtio_vsock_sock *vvs, u32 credit) if (ret > credit) ret = credit; vvs->tx_cnt += ret; + vvs->bytes_unsent += ret; spin_unlock_bh(&vvs->tx_lock); return ret; @@ -488,6 +509,7 @@ void virtio_transport_put_credit(struct virtio_vsock_sock *vvs, u32 credit) spin_lock_bh(&vvs->tx_lock); vvs->tx_cnt -= credit; + vvs->bytes_unsent -= credit; spin_unlock_bh(&vvs->tx_lock); } EXPORT_SYMBOL_GPL(virtio_transport_put_credit); @@ -1090,6 +1112,19 @@ void virtio_transport_destruct(struct vsock_sock *vsk) } EXPORT_SYMBOL_GPL(virtio_transport_destruct); +ssize_t virtio_transport_unsent_bytes(struct vsock_sock *vsk) +{ + struct virtio_vsock_sock *vvs = vsk->trans; + size_t ret; + + spin_lock_bh(&vvs->tx_lock); + ret = vvs->bytes_unsent; + spin_unlock_bh(&vvs->tx_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(virtio_transport_unsent_bytes); + static int virtio_transport_reset(struct vsock_sock *vsk, struct sk_buff *skb) { |