The third, and final, installment for mprds-tcp changes. In Patch 3 of this set, if the transport support t_mp_capable, we hash outgoing traffic across multiple paths. Additionally, even if the transport is MP capable, we may be peering with some node that does not support mprds, or supports a different number of paths. This necessitates RDS control plane changes so that both peers agree on the number of paths to be used for the rds-tcp connection. Patch 3 implements all these changes, which are documented in patch 5 of the series.
Patch 1 of this series is a bug fix for a race-condition that has always existed, but is now more easily encountered with mprds. Patch 2 is code refactoring. Patches 4 and 5 are Documentation updates. Sowmini Varadhan (5): RDS: TCP: avoid bad page reference in rds_tcp_listen_data_ready RDS: TCP: Reduce code duplication in rds_tcp_reset_callbacks() RDS: TCP: Enable multipath RDS for TCP Documentation: RDS: updates for SO_RDS_TRANSPORT socket option Documentation: RDS: Document Multipath RDS (mprds) Documentation/networking/rds.txt | 72 ++++++++++++++++++++++++++++++++++++- net/rds/bind.c | 6 +++ net/rds/connection.c | 17 ++++----- net/rds/message.c | 1 + net/rds/rds.h | 25 ++++++++++++- net/rds/recv.c | 75 ++++++++++++++++++++++++++++++++++++++ net/rds/send.c | 71 ++++++++++++++++++++++++++++++++++-- net/rds/tcp.c | 31 ++++++---------- net/rds/tcp.h | 1 + net/rds/tcp_connect.c | 7 +++- net/rds/tcp_listen.c | 65 +++++++++++++++++++++++++++++---- net/rds/tcp_send.c | 18 +++++++--- net/rds/threads.c | 2 + 13 files changed, 342 insertions(+), 49 deletions(-)
