[rds-devel] [PATCH net-next 1/3] net/rds: Use a single TCP socket for both send and receive.
santosh shilimkar
santosh.shilimkar at oracle.com
Wed Sep 30 09:13:47 PDT 2015
On 9/30/2015 9:09 AM, Sowmini Varadhan wrote:
> On (09/30/15 08:50), santosh shilimkar wrote:
>>> rs_tcp = (struct rds_tcp_connection *)conn->c_transport_data;
>>> - WARN_ON(!rs_tcp || rs_tcp->t_sock);
>>> + if (rs_tcp->t_sock && inet->inet_saddr < inet->inet_daddr) {
>>> + struct sock *nsk = new_sock->sk;
>>>
>> Any reason you dropped the WARN_ON. Note that till we got commit
>> 74e98eb0 (" RDS: verify the underlying transport exists before creating
>> a connection") merged, we had an issue. That guards it now.
>
> That was done deliberately. Now that we have only one tcp socket,
> we can run into an rds_tcp_connection for an outgoing connection
> that we initiated, thus rs_tcp->t_sock can be non-null - which is
> why a new check is added in the newly added line in the patch.
>
Thanks for clarification.
Regards,
Santosh
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