This series contains a set of fixes for bugs exposed when
we ran the following in a loop between a test machine pair:
while (1); do
# modprobe rds-tcp on test nodes
# run rds-stress in bi-dir mode between test machine pair
# modprobe -r rds-tcp on test nodes
done
rds-stress in bi-dir mode will cause both nodes to initiate
RDS-TCP connections at almost the same instant, exposing the
bugs fixed in this series.
Without the fixes, rds-stress reports sporadic packet drops,
and packets arriving out of sequence. After the fixes,we have
been able to run the test overnight, without any issues.
Each patch has a detailed description of the root-cause fixed
by the patch.
Sowmini Varadhan (3):
RDS: TCP: set RDS_FLAG_RETRANSMITTED in cp_retrans list
RDS: TCP: Track peer's connection generation number
RDS: TCP: Force every connection to be initiated by numerically
smaller IP address
net/rds/af_rds.c | 4 ++++
net/rds/connection.c | 3 +++
net/rds/message.c | 1 +
net/rds/rds.h | 8 +++++++-
net/rds/recv.c | 36 ++++++++++++++++++++++++++++++++++++
net/rds/send.c | 9 +++++++--
net/rds/tcp_connect.c | 14 +++++++++++++-
net/rds/tcp_listen.c | 29 ++++++++++++-----------------
net/rds/tcp_send.c | 3 +++
9 files changed, 86 insertions(+), 21 deletions(-)
