On 3/15/2016 11:53 AM, Sowmini Varadhan wrote:
Add per-net sysctl tunables to set the size of sndbuf and
rcvbuf on the kernel tcp socket.
The tunables are added at /proc/sys/net/rds/tcp/rds_tcp_sndbuf
and /proc/sys/net/rds/tcp/rds_tcp_rcvbuf.
Since these values must be set before accept() or connect(),
and there may be an arbitrary number of existing rds-tcp
sockets when the tunable is modified. To make sure that all
connections in the netns pick up the same value for the tunable,
we reset existing rds-tcp connections in the netns, so that
they can reconnect with the new parameters.
Signed-off-by: Sowmini Varadhan <sowmini.varad...@oracle.com>
---
v2; use sysctl instead of module param. Tunabes are now per netns,
and can be dynamically modified without restarting all namespaces.
v3: review comments from Santosh Shilimkar, Eric Dumazet
net/rds/tcp.c | 143 +++++++++++++++++++++++++++++++++++++++++++++++++++++----
1 files changed, 134 insertions(+), 9 deletions(-)
This version looks fine to me. Thanks !!
Acked-by: Santosh Shilimkar <santosh.shilim...@oracle.com>
