On 12/31/2015 4:41 PM, Yuval Shaia wrote:
To support security applications, that need to filter out connections based
on SGID, an ioctl command to retrieve SGID of a given socket is added.
[...]
+
+found:
+ if (!(neigh->nud_state & NUD_VALID))
+ return -EINVAL;
+
+ gid = (union ib_gid *)(neigh->ha + 4);
+ *sgid = be64_to_cpu(gid->global.interface_id);
+ *subnet_prefix = be64_to_cpu(gid->global.subnet_prefix);
wait (1st)
the neighbour holds a destination address, not source address, so why
are you talking on SGID?!
wait (2nd)
what prevents you from getting this info in user space through netlink
from the kernel rtnl routing/neighbour services?
root@r-dcs54 ~]# ip r s | grep 192.168.20.0/24
192.168.20.0/24 dev ib0 proto kernel scope link src 192.168.20.17
[root@r-dcs54 ~]# ip n s | grep ib0
192.168.20.18 dev ib0 lladdr
80:00:00:48:fe:80:00:00:00:00:00:00:f4:52:14:03:00:01:da:81 DELAY
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