[PATCH net-next v3 0/4] fixes from 2018-04-17 - v3

Ursula Braun
2018-04-26T15:18:19Z

From: Ursula Braun <ursula.braun@linux.ibm.com>

Dave,

in the mean time we challenged the benefit of these CLC handshake
optimizations for the sockopts TCP_NODELAY and TCP_CORK.
We decided to give up on them for now, since SMC still works
properly without.
There is now version 3 of the patch series with patches 2-4 implementing
sockopts that require special handling in SMC.

Version 3 changes
* no deferring of setsockopts TCP_NODELAY and TCP_CORK anymore
* allow fallback for some sockopts eliminating SMC usage
* when setting TCP_NODELAY always enforce data transmission
(not only together with corked data)

Version 2 changes of Patch 2/4 (and 3/4):
* return error -EOPNOTSUPP for TCP_FASTOPEN sockopts
* fix a kernel_setsockopt() usage bug by switching parameter
variable from type "u8" to "int"
* add return code validation when calling kernel_setsockopt()
* propagate a setsockopt error on the internal CLC socket
to the SMC socket.

Regards, Ursula

Karsten Graul (1):
net/smc: fix structure size

Ursula Braun (3):
net/smc: handle sockopts forcing fallback
net/smc: handle sockopt TCP_CORK
net/smc: handle sockopt TCP_DEFER_ACCEPT

net/smc/af_smc.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++---
net/smc/smc.h | 4 +++
net/smc/smc_cdc.c | 2 +-
net/smc/smc_cdc.h | 2 +-
net/smc/smc_rx.c | 2 +-
net/smc/smc_rx.h | 1 +
net/smc/smc_tx.c | 24 ++++++++++++--
7 files changed, 122 insertions(+), 11 deletions(-)

--
2.13.5