[DLM] Add support for tcp communications

The following patch adds a TCP based communications layer
to the DLM which is compile time selectable. The existing SCTP
layer gives the advantage of allowing multihoming, whereas
the TCP layer has been heavily tested in previous versions of
the DLM and is known to be robust and therefore can be used as
a baseline for performance testing.

Signed-off-by: Patrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Patrick Caulfield 2006-11-02 11:19:21 -05:00 committed by Steven Whitehouse
parent 61057c6bb3
commit fdda387f73
4 changed files with 1283 additions and 1 deletions

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@ -9,6 +9,23 @@ config DLM
A general purpose distributed lock manager for kernel or userspace A general purpose distributed lock manager for kernel or userspace
applications. applications.
choice
prompt "Select DLM communications protocol"
depends on DLM
default DLM_TCP
help
The DLM Can use TCP or SCTP for it's network communications.
SCTP supports multi-homed operations whereas TCP doesn't.
However, SCTP seems to have stability problems at the moment.
config DLM_TCP
bool "TCP/IP"
config DLM_SCTP
bool "SCTP"
endchoice
config DLM_DEBUG config DLM_DEBUG
bool "DLM debugging" bool "DLM debugging"
depends on DLM depends on DLM

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@ -4,7 +4,6 @@ dlm-y := ast.o \
dir.o \ dir.o \
lock.o \ lock.o \
lockspace.o \ lockspace.o \
lowcomms.o \
main.o \ main.o \
member.o \ member.o \
memory.o \ memory.o \
@ -17,3 +16,6 @@ dlm-y := ast.o \
util.o util.o
dlm-$(CONFIG_DLM_DEBUG) += debug_fs.o dlm-$(CONFIG_DLM_DEBUG) += debug_fs.o
dlm-$(CONFIG_DLM_TCP) += lowcomms-tcp.o
dlm-$(CONFIG_DLM_SCTP) += lowcomms-sctp.o

1263
fs/dlm/lowcomms-tcp.c Normal file

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