On 6/27/2018 3:07 AM, Ka-Cheong Poon wrote:
On 06/26/2018 09:08 PM, Sowmini Varadhan wrote:
On (06/26/18 21:02), Ka-Cheong Poon wrote:
[...]
I don't expect RDS apps will want to use link local address
in the first place. In fact, most normal network apps don't.
This is not true.
You
On (06/27/18 18:07), Ka-Cheong Poon wrote:
>
> There is a reason for that. It is the way folks expect
> how IPv6 addresses are being used.
have you tried "traceoute6 -s abc::2 fe80::2" on linux?
> It is not just forwarding. The simple case is that one
> picks a global address in a different li
On 06/26/2018 09:08 PM, Sowmini Varadhan wrote:
On (06/26/18 21:02), Ka-Cheong Poon wrote:
In this case, RFC 6724 prefers link local address as source.
the keyword is "prefers".
There is a reason for that. It is the way folks expect
how IPv6 addresses are being used.
While using non-li
On (06/26/18 21:02), Ka-Cheong Poon wrote:
>
> In this case, RFC 6724 prefers link local address as source.
the keyword is "prefers".
> While using non-link local address (say ULA) is not forbidden,
> doing this can easily cause inter-operability issues (does the
> app really know that the non-
On 06/26/2018 06:16 PM, Sowmini Varadhan wrote:
On (06/26/18 13:30), Ka-Cheong Poon wrote:
My answer to this is that if a socket is not bound to a link
local address (meaning it is bound to a non-link local address)
and it is used to send to a link local peer, I think it should
fail.
Hmm, I'm
On (06/26/18 13:30), Ka-Cheong Poon wrote:
>
> My answer to this is that if a socket is not bound to a link
> local address (meaning it is bound to a non-link local address)
> and it is used to send to a link local peer, I think it should
> fail.
Hmm, I'm not sure I agree. I dont think this is fo
On 06/26/2018 01:50 AM, Sowmini Varadhan wrote:
If a socket is bound, I guess the scope_id should be used. So
if a socket is not bound to a link local address and the socket
is used to sent to a link local peer, it should fail.
PF_RDS sockets *MUST* alwasy be bound. See
Documentation/network
On 6/25/2018 10:50 AM, Sowmini Varadhan wrote:
On (06/26/18 01:43), Ka-Cheong Poon wrote:
Yes, I think if the socket is bound, it should check the scope_id
in msg_name (if not NULL) to make sure that they match. A bound
RDS socket can send to multiple peers. But if the bound local
address is
On (06/26/18 01:43), Ka-Cheong Poon wrote:
>
> Yes, I think if the socket is bound, it should check the scope_id
> in msg_name (if not NULL) to make sure that they match. A bound
> RDS socket can send to multiple peers. But if the bound local
> address is link local, it should only be allowed to
On 06/26/2018 01:03 AM, Sowmini Varadhan wrote:
On (06/25/18 03:38), Ka-Cheong Poon wrote:
@@ -1105,8 +1105,27 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg,
size_t payload_len)
break;
case sizeof(*sin6): {
- ret = -EPROTONOSUPP
On (06/25/18 03:38), Ka-Cheong Poon wrote:
> @@ -1105,8 +1105,27 @@ int rds_sendmsg(struct socket *sock, struct msghdr
> *msg, size_t payload_len)
> break;
>
> case sizeof(*sin6): {
> - ret = -EPROTONOSUPPORT;
> - goto o
Hi Ka-Cheong,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on net-next/master]
url:
https://github.com/0day-ci/linux/commits/Ka-Cheong-Poon/rds-IPv6-support/20180625-190047
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
This patch enables RDS to use IPv6 addresses. For RDS/TCP, the
listener is now an IPv6 endpoint which accepts both IPv4 and IPv6
connection requests. RDS/RDMA/IB uses a private data (struct
rds_ib_connect_private) exchange between endpoints at RDS connection
establishment time to support RDMA. Thi
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