On Wed, May 24, 2017 at 1:25 PM, Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx> wrote: > On Wed, May 24, 2017 at 12:14:53PM -0600, Robert LeBlanc wrote: >> On Tue, May 23, 2017 at 5:17 PM, Robert LeBlanc <robert@xxxxxxxxxxxxx> wrote: >> > I could not replicate ping6 working today without passing the -I >> > parameter. I created https://github.com/linux-rdma/rdma-core/pull/136 > > It shouldn't have worked, the route cache probably needed flushing > after configuring policy routing. What I'm thinking happened is I tried the test too quickly after modifing the route tables, so something was cached that made it work. >> Hard coding the source IP address allows the connection to work fine. >> It seems for some reason, it is not using the information from the >> iface that we configured. > > Only information provided by the user can be used for route lookup. I'm trying to provide this information through iscsiadm ifaces, but iSER completely ignores it. # iscsiadm -m iface -I eth0iser -o new # iscsiadm -m iface -I eth0iser -o update -n iface.ipaddress -v 192.168.13.14 # iscsiadm -m iface -I eth0iser -o update -n iface.transport_name -v iser # iscsiadm -m discovery -t st -p 192.168.13.13 -I eth0iser My routing information: # ip route default via 10.64.0.1 dev eno1 proto static metric 100 10.64.0.0/10 dev eno1 proto kernel scope link src 10.91.0.14 metric 100 # ip rule 0: from all lookup local 32765: from 192.168.13.14 lookup r0 32766: from all lookup main 32767: from all lookup default # ip route show table r0 192.168.13.0/24 dev eth0 scope link The target has the IP 192.168.13.13 and the route in the default routing table (automatic entries not modified by me for simplicity). If I take out the hardcoded 'NULL' in iser_connect() and put in a hardcoded source IP address, just to test, then the connection is set up properly. That tells me that iser_connect() knows what to do and how to do it, it just never tries to use a source address if supplied through the iface configuration. > Do not try an extract a source address from some other information.. I want to get the source address (iface.ipaddress) from the iface (eth0iser in this case) and pass that into iser_connect(). I'm just not sure how to do that and where the best place to do that is. That is what I need some help understanding. Any push in the right direction is appreciated. Is the iface info parsed by the base iscsi code and then put into a struct that I can query? I sure hope it is that easy, but I'm having difficulty locating that code. Thanks, ---------------- Robert LeBlanc PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
