On 02/07/2017 01:02 AM, Alexei Starovoitov wrote:
On 2/6/17 3:39 PM, Daniel Borkmann wrote:
On 02/04/2017 04:34 AM, Alexei Starovoitov wrote:
[...]
+BPF_CALL_1(bpf_skb_netns_id, struct sk_buff *, skb)
+{
+struct net_device *dev = skb->dev;
+
+if (!dev)
+return 0;
+return pro
On 2/6/17 3:39 PM, Daniel Borkmann wrote:
On 02/04/2017 04:34 AM, Alexei Starovoitov wrote:
[...]
+BPF_CALL_1(bpf_skb_netns_id, struct sk_buff *, skb)
+{
+struct net_device *dev = skb->dev;
+
+if (!dev)
+return 0;
+return proc_get_ns_devid_inum(&dev_net(dev)->ns);
+}
+
+stati
On 02/04/2017 04:34 AM, Alexei Starovoitov wrote:
[...]
+BPF_CALL_1(bpf_skb_netns_id, struct sk_buff *, skb)
+{
+ struct net_device *dev = skb->dev;
+
+ if (!dev)
+ return 0;
+ return proc_get_ns_devid_inum(&dev_net(dev)->ns);
+}
+
+static const struct bpf_func_pro
On Sun, Feb 5, 2017 at 11:24 AM, David Ahern wrote:
> On 2/3/17 8:34 PM, Alexei Starovoitov wrote:
>> Therefore introduce 'u64 bpf_sk_netns_id(sk);' helper. It returns
>> unique value that identifies netns of given socket or dev_net(skb->dev)
>> The upper 32-bits of the return value contain device
On 2/3/17 8:34 PM, Alexei Starovoitov wrote:
> Therefore introduce 'u64 bpf_sk_netns_id(sk);' helper. It returns
> unique value that identifies netns of given socket or dev_net(skb->dev)
> The upper 32-bits of the return value contain device id where namespace
> filesystem resides and lower 32-bits
in cases where bpf programs are looking at sockets and packets
that belong to different netns, it could be useful to get an id
that uniquely identify a netns within the whole system.
Therefore introduce 'u64 bpf_sk_netns_id(sk);' helper. It returns
unique value that identifies netns of given socke