diff options
| author | Vladislav Grishenko <themiron@mail.ru> | 2026-07-30 15:48:55 +0500 |
|---|---|---|
| committer | Vladislav Grishenko <themiron@mail.ru> | 2026-08-03 01:06:01 +0500 |
| commit | f2606293c1007aa68a8bcf1e92ae3d64e250eadb (patch) | |
| tree | a804a66f12bf586f3724d959b40dab40e0862244 /drivers/ppposeq/CMakeLists.txt | |
| parent | 332daf3705c8f6ec2e04e041261f86ba7b8650a6 (diff) | |
| download | accel-ppp-sstp-ppposeq.tar.gz accel-ppp-sstp-ppposeq.zip | |
sstp: add ppposeq transport to avoid userspace HDLC framingsstp-ppposeq
A pty is a byte stream, so the tty flip buffer merges frames written
back to back and sstp has to re-delimit them with async HDLC escaping
and a CRC-16 FCS. On a 1452-byte payload that is ~3600 ns per frame,
most of it spent on the FCS.
PPPOSEQ is a pppox protocol whose socket is the ppp endpoint itself,
so one datagram is one frame and no framing is needed at all. The
same payload takes ~380 ns per frame, about 9 times less. Requires
kernel 2.6.37, the first with PX_MAX_PROTO 3, whose remaining slot
it claims.
Supported kernels are from 2.6.37 to 7.2.
The new ppp-mode option selects the transport; auto, the default,
falls back to async when the module is unavailable, so hosts with
prebuilt kernels are unaffected.
PPP_SYNC is removed, being disabled and unfixable over a pty: frame
boundaries cannot be recovered from the stream, and coalescing cannot
be prevented since frames arrive from the network stack.
Diffstat (limited to 'drivers/ppposeq/CMakeLists.txt')
| -rw-r--r-- | drivers/ppposeq/CMakeLists.txt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/ppposeq/CMakeLists.txt b/drivers/ppposeq/CMakeLists.txt new file mode 100644 index 00000000..08c45c76 --- /dev/null +++ b/drivers/ppposeq/CMakeLists.txt @@ -0,0 +1,19 @@ +if (NOT DEFINED KDIR) + set(KDIR "/usr/src/linux") +endif (NOT DEFINED KDIR) + +ADD_CUSTOM_COMMAND(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/driver/ppposeq.ko + COMMAND rm -rf ${CMAKE_CURRENT_BINARY_DIR}/driver + COMMAND mkdir ${CMAKE_CURRENT_BINARY_DIR}/driver + COMMAND ln -sf ${CMAKE_CURRENT_SOURCE_DIR}/* ${CMAKE_CURRENT_BINARY_DIR}/driver + COMMAND make -C ${KDIR} M=${CMAKE_CURRENT_BINARY_DIR}/driver modules + DEPENDS ppposeq.c ppposeq.h +) + +ADD_CUSTOM_TARGET(ppposeq_drv ALL + DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/driver/ppposeq.ko +) + +IF (NOT DEFINED CPACK_TYPE) + INSTALL(CODE "EXECUTE_PROCESS(COMMAND make -C ${KDIR} M=${CMAKE_CURRENT_BINARY_DIR}/driver modules_install)") +ENDIF() |