search for: vlan_tci

...line int virtio_net_ext_to_skb(struct sk_buff *skb, ptr += sizeof(struct virtio_net_ext_ip6frag); } + if (ext->flags & VIRTIO_NET_EXT_F_VLAN) { + struct virtio_net_ext_vlan *vhdr = + (struct virtio_net_ext_vlan *)ptr; + + __vlan_hwaccel_put_tag(skb, vhdr->vlan_proto, vhdr->vlan_tci); + ptr += sizeof(struct virtio_net_ext_vlan); + } + return 0; } @@ -130,6 +138,15 @@ static inline int virtio_net_ext_from_skb(const struct sk_buff *skb, ext->flags |= VIRTIO_NET_EXT_F_IP6FRAG; } + if (ext_mask & VIRTIO_NET_EXT_F_VLAN && skb_vlan_tag_present(skb)) { +...

...For outgoing packets tcpdump works (and Ethereal for Windows sees the packet correctly on the wire) so the problem doesn't occur when sending packets. I added following line to vlan_dev.c: vlan_dev.c:: int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, struct packet_type* ptype): vlan_TCI = ntohs(vhdr->h_vlan_TCI); + /* Print the 802.1p priority */ +printk("VLAN Prio: %hx\n", vlan_TCI >> 13); vid = (vlan_TCI & VLAN_VID_MASK); With the code above I get the 802.1p correctly. Does anyone know how and when pcap grabs the packet (does pcap grab the packet before...

...receiving the packet after nftables changes the VLAN PCP, the IP header of the packet is corrupted. The VLAN PCP value remains unchanged. (See attached file: 2024-04-09 rx packet.pcapng) [Analysis] When receiving packets from the Linux bridge, the VLAN tag is already untagged and stored in skb->vlan_tci. However, when using the "vlan pcp set" command, the incorrect offset is obtained in nft_payload_set_eval(), resulting in packet corruption. To resolve this issue, "vlan pcp set" should set skb->vlan_tci instead of modifying skb->data. -- You are receiving this mail beca...

Curreclty virtion net header is fixed size and adding things to it is rather difficult to do. This series attempt to add the infrastructure as well as some extensions that try to resolve some deficiencies we currently have. First, vnet header only has space for 16 flags. This may not be enough in the future. The extensions will provide space for 32 possbile extension flags and 32 possible

Curreclty virtion net header is fixed size and adding things to it is rather difficult to do. This series attempt to add the infrastructure as well as some extensions that try to resolve some deficiencies we currently have. First, vnet header only has space for 16 flags. This may not be enough in the future. The extensions will provide space for 32 possbile extension flags and 32 possible

...ude "br_private.h" + +int br_vlan_input_frame(struct sk_buff *skb, struct net_bridge_port_vlan *vlan) +{ + if (skb->protocol != htons(ETH_P_8021Q)) { + skb->vlan = vlan->untagged; + } else { + struct vlan_ethhdr *vhdr = (struct vlan_ethhdr *)(skb->mac.raw); + unsigned short vlan_TCI = ntohs(vhdr->h_vlan_TCI); + unsigned short vid = (vlan_TCI & VLAN_VID_MASK); + + skb->vlan = vid ? vid : vlan->untagged; + } + + if (skb->vlan == 0) + goto err; + + if (br_vlan_filter(skb, vlan)) + goto err; + + return 0; + +err: + kfree_skb(skb); + return 1; +} + +int br_vlan_...

This series of patches provides an ability to add VLANs to the bridge ports. This is similar to what can be found in most switches. The bridge port may have any number of VLANs added to it including vlan 0 priority tagged traffic. When vlans are added to the port, only traffic tagged with particular vlan will forwarded over this port. Additionally, vlan ids are added to FDB entries and become

Changes since v9: * series re-ordering so make functionality more distinct. Basic vlan filtering is patches 1-4. Support for PVID/untagged vlans is patches 5 and 6. VLAN support for FDB/MDB is patches 7-11. Patch 12 is still additional egress policy. * Slight simplification to code that extracts the VID from skb. Since we now depend on the vlan module, at the time of input skb_tci is