search for: vnet_hdr_len

...atic const struct file_operations tap_fops = { > #endif > }; > > +static int tap_get_user_xdp(struct tap_queue *q, struct xdp_buff *xdp) > +{ > + struct virtio_net_hdr *gso = xdp->data_hard_start + sizeof(int); > + int buflen = *(int *)xdp->data_hard_start; > + int vnet_hdr_len = 0; > + struct tap_dev *tap; > + struct sk_buff *skb; > + int err, depth; > + > + if (q->flags & IFF_VNET_HDR) > + vnet_hdr_len = READ_ONCE(q->vnet_hdr_sz); > + > + skb = build_skb(xdp->data_hard_start, buflen); > + if (!skb) { > + err = -ENOMEM; > +...

...ers/net/tap.c @@ -1146,14 +1146,83 @@ static const struct file_operations tap_fops = { #endif }; +static int tap_get_user_xdp(struct tap_queue *q, struct xdp_buff *xdp) +{ + struct virtio_net_hdr *gso = xdp->data_hard_start + sizeof(int); + int buflen = *(int *)xdp->data_hard_start; + int vnet_hdr_len = 0; + struct tap_dev *tap; + struct sk_buff *skb; + int err, depth; + + if (q->flags & IFF_VNET_HDR) + vnet_hdr_len = READ_ONCE(q->vnet_hdr_sz); + + skb = build_skb(xdp->data_hard_start, buflen); + if (!skb) { + err = -ENOMEM; + goto err; + } + + skb_reserve(skb, xdp->data - xdp...

Hi, This patches introduce virtio_net_hdr_{from,to}_skb functions for conversion of GSO information between skb and virtio_net_hdr. Mike Rapoport (6): virtio_net: add _UAPI prefix to virtio_net header guards virtio_net: introduce virtio_net_hdr_{from,to}_skb macvtap: use common code for virtio_net_hdr and skb GSO conversion tuntap: use common code for virtio_net_hdr and skb GSO

Hi, This patches introduce virtio_net_hdr_{from,to}_skb functions for conversion of GSO information between skb and virtio_net_hdr. Mike Rapoport (6): virtio_net: add _UAPI prefix to virtio_net header guards virtio_net: introduce virtio_net_hdr_{from,to}_skb macvtap: use common code for virtio_net_hdr and skb GSO conversion tuntap: use common code for virtio_net_hdr and skb GSO

Hi all: This series tries to batch submitting packets to underlayer socket through msg_control during sendmsg(). This is done by: 1) Doing userspace copy inside vhost_net 2) Build XDP buff 3) Batch at most 64 (VHOST_NET_BATCH) XDP buffs and submit them once through msg_control during sendmsg(). 4) Underlayer sockets can use XDP buffs directly when XDP is enalbed, or build skb based on XDP

multiple queue virtio-net: flow steering through host/guest cooperation Hello all: This is a rough series adds the guest/host cooperation of flow steering support based on Krish Kumar's multiple queue virtio-net driver patch 3/3 (http://lwn.net/Articles/467283/). This idea is simple, the backend pass the rxhash to the guest and guest would tell the backend the hash to queue mapping when

multiple queue virtio-net: flow steering through host/guest cooperation Hello all: This is a rough series adds the guest/host cooperation of flow steering support based on Krish Kumar's multiple queue virtio-net driver patch 3/3 (http://lwn.net/Articles/467283/). This idea is simple, the backend pass the rxhash to the guest and guest would tell the backend the hash to queue mapping when

Hi all: This series tries to batch submitting packets to underlayer socket through msg_control during sendmsg(). This is done by: 1) Doing userspace copy inside vhost_net 2) Build XDP buff 3) Batch at most 64 (VHOST_NET_BATCH) XDP buffs and submit them once through msg_control during sendmsg(). 4) Underlayer sockets can use XDP buffs directly when XDP is enalbed, or build skb based on XDP

Hi all: This series tries to batch submitting packets to underlayer socket through msg_control during sendmsg(). This is done by: 1) Doing userspace copy inside vhost_net 2) Build XDP buff 3) Batch at most 64 (VHOST_NET_BATCH) XDP buffs and submit them once through msg_control during sendmsg(). 4) Underlayer sockets can use XDP buffs directly when XDP is enalbed, or build skb based on XDP

...dif diff --git a/net/uip/core.c b/net/uip/core.c index e860f3a..7d4b19d 100644 --- a/net/uip/core.c +++ b/net/uip/core.c @@ -25,6 +25,12 @@ int uip_tx(struct iovec *iov, u16 out, struct uip_info *info) eth_len = iov[1].iov_len; eth = iov[1].iov_base; + if (out == 1) { + vnet_len = info->vnet_hdr_len; + eth = (void *)((char *)vnet + vnet_len); + eth_len = iov[0].iov_len - vnet_len; + } + /* * In case, ethernet frame is in more than one iov entry. * Copy iov buffer into one linear buffer. @@ -87,7 +93,6 @@ int uip_rx(struct iovec *iov, u16 in, struct uip_info *info) memcpy_toiovece...

...dif diff --git a/net/uip/core.c b/net/uip/core.c index e860f3a..7d4b19d 100644 --- a/net/uip/core.c +++ b/net/uip/core.c @@ -25,6 +25,12 @@ int uip_tx(struct iovec *iov, u16 out, struct uip_info *info) eth_len = iov[1].iov_len; eth = iov[1].iov_base; + if (out == 1) { + vnet_len = info->vnet_hdr_len; + eth = (void *)((char *)vnet + vnet_len); + eth_len = iov[0].iov_len - vnet_len; + } + /* * In case, ethernet frame is in more than one iov entry. * Copy iov buffer into one linear buffer. @@ -87,7 +93,6 @@ int uip_rx(struct iovec *iov, u16 in, struct uip_info *info) memcpy_toiovece...