search for: promisc

In current Crossbow''s implementation, vlan tag seems to be unconditionally retained for promisc mode listener even when MAC_OPEN_FLAGS_TAG_DISABLE is not specified. I saw comments in mac_rx_deliver() saying that this is deliberately designed like this. I''m wondering why we design it like this (choose not to respect MAC_OPEN_FLAGS_TAG_DISABLE flag for promisc mode listener)? Or am I...

Hello, Is it normal that eth0 in domain0 is in promisc mode ? [root@vmaster ~]# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0B:CD:4D:C4:8A inet addr:XXX.XXX.XXX.XXX Bcast:XXX.XXX.XXX.XXX Mask: 255.255.255.248 inet6 addr: fe80::20b:cdff:fe4d:c48a/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Me...

> From: "Roy" <roy@xxx.lt> > > I want to set interface to promisc mode and do all routing with iptables. > Is it somehow possible? as I see now kernel do not pass everything to > ipables. > > Basicaly I want to ignore ethernet addess and use only ip for routing. > > I suppose this may require writting special kernel driver or it > is possible...

...<net/ethernet.h> + #if defined(__OpenBSD__) #include <util.h> #endif @@ -1870,6 +1873,158 @@ static TAPState *net_tap_init(VLANState *vlan, const char *model, #endif /* !_WIN32 */ +typedef struct RAWState { + VLANClientState *vc; + int fd; + uint8_t buf[4096]; + int promisc; +} RAWState; + +static int net_raw_fd_init(Monitor *mon, const char *ifname, int promisc) +{ + int fd, ret; + struct ifreq req; + struct sockaddr_ll lladdr; + + fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); + if (fd < 0) + fprintf(stderr, "packet socket failed\n"); + + memset(&...

...<net/ethernet.h> + #if defined(__OpenBSD__) #include <util.h> #endif @@ -1870,6 +1873,158 @@ static TAPState *net_tap_init(VLANState *vlan, const char *model, #endif /* !_WIN32 */ +typedef struct RAWState { + VLANClientState *vc; + int fd; + uint8_t buf[4096]; + int promisc; +} RAWState; + +static int net_raw_fd_init(Monitor *mon, const char *ifname, int promisc) +{ + int fd, ret; + struct ifreq req; + struct sockaddr_ll lladdr; + + fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); + if (fd < 0) + fprintf(stderr, "packet socket failed\n"); + + memset(&...

...>status == VIRTIO_NET_OK); + +out: + kfree(buf); + return ret; } static int virtnet_set_mac_address(struct net_device *dev, void *p) @@ -1151,7 +1167,7 @@ static void virtnet_set_rx_mode(struct net_device *dev) { struct virtnet_info *vi = netdev_priv(dev); struct scatterlist sg[2]; - u8 promisc, allmulti; + u8 *cmdbyte; struct virtio_net_ctrl_mac *mac_data; struct netdev_hw_addr *ha; int uc_count; @@ -1163,22 +1179,25 @@ static void virtnet_set_rx_mode(struct net_device *dev) if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_RX)) return; - promisc = ((dev->flags &...

...>status == VIRTIO_NET_OK); + +out: + kfree(buf); + return ret; } static int virtnet_set_mac_address(struct net_device *dev, void *p) @@ -1151,7 +1167,7 @@ static void virtnet_set_rx_mode(struct net_device *dev) { struct virtnet_info *vi = netdev_priv(dev); struct scatterlist sg[2]; - u8 promisc, allmulti; + u8 *cmdbyte; struct virtio_net_ctrl_mac *mac_data; struct netdev_hw_addr *ha; int uc_count; @@ -1163,22 +1179,25 @@ static void virtnet_set_rx_mode(struct net_device *dev) if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_RX)) return; - promisc = ((dev->flags &...

Hello, I've got a very strange problem. Lately I've been setting up my linux servers for network (layer2) redundancy with a bridge interface containing two ethernet interfaces connecting to two switches. So far I didn't have any problems with it, but now a very strange thing happens with a new server I'm installing. The server is an ibm x346 having two onboard BCM5721 cards, the

...(buf); > + return ret; > } > > static int virtnet_set_mac_address(struct net_device *dev, void *p) > @@ -1151,7 +1167,7 @@ static void virtnet_set_rx_mode(struct net_device *dev) > { > struct virtnet_info *vi = netdev_priv(dev); > struct scatterlist sg[2]; > - u8 promisc, allmulti; > + u8 *cmdbyte; > struct virtio_net_ctrl_mac *mac_data; > struct netdev_hw_addr *ha; > int uc_count; > @@ -1163,22 +1179,25 @@ static void virtnet_set_rx_mode(struct net_device *dev) > if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_RX)) > return;...

...for some reason. ----- End forwarded message ----- I'm sure i checked this before, but a google search turned up this. ngctl mkpeer fec dummy fec ngctl msg fec0: add_iface '"sf2"' ngctl msg fec0: add_iface '"sf3"' ngctl msg fec0: set_mode_inet ifconfig sf2 promisc ifconfig sf3 promisc ifconfig fec0 promisc after this fec0 will be the virtual if that gets the frames. This does depend on the fec module. # cd /usr/src/sys/modules/netgraph/fec/ # make && make install http://taosecurity.blogspot.com/ <- this is where i found it. which points out t...

Hi folks, the standard config uses bridging with promiscous mode for eth0 (understandable) and the vifs (why that?). Does that mean that EVERY vif receives EVERY packet crossing the bridge - even those packets destined for other domains? Documentation compares bridging to "a cross over cable between virtual machine and domain0" which would...

Greetings all, I have tried to find a discussion of the removal of support for the PROMISC interface flag with the iproute2 tools. - it used to work (iproute2-2.2.4-$ANCIENT) - there''s a comment about it in the iproute docs [0] - (un-)setting the flag with ifconfig still works Can anybody point me to the discussion (linux-net, maybe?) where support for setting the PROMIS...

Hello All, While implementing CBQ for my network card , i found it has PROMISC mode enabled by default while installing RedHat-7.3 . What is it ? Is any way related to security. Regards Vanitha

Hello, There is a xen setup in which "brctl show" gives the following output. bridge name bridge id STP enabled interfaces eth1 8000.003048c9d4df no peth1 vif1.0 vif2.0

...rtio_net.c +++ b/drivers/net/virtio_net.c @@ -147,6 +147,17 @@ struct receive_queue { struct xdp_rxq_info xdp_rxq; }; +/* Control VQ buffers: protected by the rtnl lock */ +struct control_buf { + struct virtio_net_ctrl_hdr hdr; + virtio_net_ctrl_ack status; + struct virtio_net_ctrl_mq mq; + u8 promisc; + u8 allmulti; + u16 vid; + u64 offloads; +}; + struct virtnet_info { struct virtio_device *vdev; struct virtqueue *cvq; @@ -192,14 +203,7 @@ struct virtnet_info { struct hlist_node node; struct hlist_node node_dead; - /* Control VQ buffers: protected by the rtnl lock */ - struct virtio...

...l_switch, http://user-mode-linux.sourceforge.net/networking.html). A couple of virtual machines (run using user-mode linux, a tool that enables you to run linux inside linux) are connected to the virtual network. This is the script I use to set up the bridge: brctl addbr br0 ifconfig eth0 0.0.0.0 promisc up ifconfig tap0 0.0.0.0 promisc up ifconfig br0 abc.def.ghi.jkl netmask 255.255.255.0 up brctl stp br0 off #This is to ensure the bridge does not send spanning tree protocol packets. brctl setfd br0 1 brctl sethello br0 1 brctl addif br0 eth0 brctl addif br0 tap0 This worked fine. I then tried to...

...>status == VIRTIO_NET_OK); + +out: + kfree(buf); + return ret; } static int virtnet_set_mac_address(struct net_device *dev, void *p) @@ -1151,7 +1167,7 @@ static void virtnet_set_rx_mode(struct net_device *dev) { struct virtnet_info *vi = netdev_priv(dev); struct scatterlist sg[2]; - u8 promisc, allmulti; + u8 *cmdbyte; struct virtio_net_ctrl_mac *mac_data; struct netdev_hw_addr *ha; int uc_count; @@ -1163,22 +1179,25 @@ static void virtnet_set_rx_mode(struct net_device *dev) if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_RX)) return; - promisc = ((dev->flags &...

...(buf); > + return ret; > } > > static int virtnet_set_mac_address(struct net_device *dev, void *p) > @@ -1151,7 +1167,7 @@ static void virtnet_set_rx_mode(struct net_device *dev) > { > struct virtnet_info *vi = netdev_priv(dev); > struct scatterlist sg[2]; > - u8 promisc, allmulti; > + u8 *cmdbyte; > struct virtio_net_ctrl_mac *mac_data; > struct netdev_hw_addr *ha; > int uc_count; > @@ -1163,22 +1179,25 @@ static void virtnet_set_rx_mode(struct net_device *dev) > if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_RX)) > return;...

...en ping in de VLAN 2 from one server to the other but without success. I tried the tcpdump also on de XCP1.6 host ''tcpdump -n -i eth1 proto ICMP'' no success , also i tried this with the xenbr1 and vif2.5 but still not getting any ICMP packets through. So i tried the XEN bridge - promiscous mode brctl setageing xenbr1 0 ifconfig eth1 promisc Still not working. I tried this also on pif-param-set uuid=xxxxxxxx other-config:promiscous=´on´ and the vif-param-set uuid = xxxxxxx other-config:promiscous=´on´ still I can not see any ICMP packet getting through the XCP1.6 server. I plug...

Hi When I start arpwatch or tcpdump the Ethernet card eth0 goes into promiscuous mode but I cannot see it with ifconfig eth0 or ip link show. The only way I can see it is when I looked at dmesg. Ifconfig uses the old style IOFLAG way to determine this but looking into ip code this is supposed to work even with newer kernels (I''m on 2.6.17 now with the latest iprou...