mirror of
https://git.rtems.org/rtems-libbsd/
synced 2025-07-23 00:15:59 +08:00
Initial addition of target specific files
+ This was needed for in_cksum.c. + Generic in_cksum.c does not include all needed methods. + generic in_cksum.c is generally sub-optimal. + Only PowerPC support merged.
This commit is contained in:
Joel Sherrill
parent
1a63f040cd
commit
9df96097b3
14
Makefile
14
Makefile
@ -7,6 +7,7 @@ include $(PROJECT_ROOT)/make/leaf.cfg
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CFLAGS += -ffreestanding
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CFLAGS += -I .
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CFLAGS += -I rtemsbsd
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CFLAGS += -I freebsd/$(RTEMS_CPU)/include
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CFLAGS += -I contrib/altq
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CFLAGS += -I contrib/pf
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CFLAGS += -B $(INSTALL_BASE)
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@ -14,6 +15,7 @@ CFLAGS += -w
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CFLAGS += -std=gnu99
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C_FILES = \
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freebsd/kern/kern_subr.c \
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freebsd/net/bridgestp.c \
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freebsd/net/ieee8023ad_lacp.c \
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freebsd/net/if_atmsubr.c \
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@ -66,7 +68,6 @@ C_FILES = \
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freebsd/netinet/if_ether.c \
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freebsd/netinet/igmp.c \
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freebsd/netinet/in.c \
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freebsd/netinet/in_cksum.c \
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freebsd/netinet/in_gif.c \
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freebsd/netinet/in_mcast.c \
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freebsd/netinet/in_pcb.c \
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@ -272,7 +273,6 @@ C_FILES = \
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freebsd/kern/init_main.c \
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freebsd/kern/kern_mbuf.c \
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freebsd/kern/kern_module.c \
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freebsd/kern/kern_subr.c \
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freebsd/kern/kern_sysctl.c \
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freebsd/kern/subr_bus.c \
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freebsd/kern/subr_kobj.c \
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@ -304,7 +304,9 @@ C_FILES = \
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freebsd/dev/usb/controller/usb_controller.c \
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freebsd/cam/cam.c \
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freebsd/cam/scsi/scsi_all.c \
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freebsd/dev/usb/storage/umass.c \
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freebsd/dev/usb/storage/umass.c
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# RTEMS Project Owned Files
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C_FILES += \
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rtemsbsd/dev/usb/controller/ohci_lpc3250.c \
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rtemsbsd/src/rtems-bsd-cam.c \
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rtemsbsd/src/rtems-bsd-nexus.c \
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@ -337,6 +339,12 @@ C_FILES = \
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rtemsbsd/src/rtems-bsd-sysctlbyname.c \
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rtemsbsd/src/rtems-bsd-sysctlnametomib.c \
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rtemsbsd/src/rtems-bsd-uma.c
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ifeq ($(RTEMS_CPU),powerpc)
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C_FILES += \
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freebsd/powerpc/powerpc/in_cksum.c
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endif
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C_O_FILES = $(C_FILES:%.c=%.o)
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C_DEP_FILES = $(C_FILES:%.c=%.dep)
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@ -48,6 +48,7 @@ isDryRun = False
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isEarlyExit = False
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isOnlyMakefile = False
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tempFile = "/tmp/tmp_FBRT"
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filesChanged = 0
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def usage():
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print "freebsd-to-rtems.py [args]"
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@ -150,6 +151,21 @@ def mapContribPath(path):
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path = m.group(1) + m.group(3) + m.group(2) + m.group(4)
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return path
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# Move target dependent files under a machine directory
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def mapCPUDependentPath(path):
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return path.replace("include/", "include/freebsd/machine/")
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# compare and overwrite destination file only if different
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def copyIfDifferent(new, old):
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global filesChanged
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if not os.path.exists(old) or \
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filecmp.cmp(new, old, shallow=False) == False:
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shutil.move(new, old)
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filesChanged += 1
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# print "Move " + new + " to " + old
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return True
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return False
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# generate an empty file as a place holder
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def installEmptyFile(src):
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global tempFile
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@ -185,21 +201,14 @@ def revertFixIncludes(data):
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data = re.sub('#([ \t]*)include <' + PREFIX + '/', '#\\1include <', data)
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return data
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# compare and overwrite destination file only if different
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def copyIfDifferent(new, old):
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if filecmp.cmp(new, old, shallow=False) == False:
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shutil.move(new, old)
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# print "Move " + new + " to " + old
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return True
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return False
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# Copy a header file from FreeBSD to the RTEMS BSD tree
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def installHeaderFile(org):
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def installHeaderFile(org, target):
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global tempFile
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src = FreeBSD_DIR + '/' + org
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dst = RTEMS_DIR + '/' + PREFIX + '/' + org # + org.replace('rtems/', '')
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dst = mapContribPath(dst)
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if target != "generic":
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dst = mapCPUDependentPath(dst)
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if isDryRun == True:
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if isVerbose == True:
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print "Install Header - " + src + " => " + dst
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@ -245,7 +254,7 @@ def installSourceFile(org):
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print "Install Source - " + src + " => " + dst
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# Revert a header file from the RTEMS BSD tree to the FreeBSD tree
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def revertHeaderFile(org):
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def revertHeaderFile(org, target):
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src = RTEMS_DIR + '/' + PREFIX + '/' + org.replace('rtems/', '')
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src = mapContribPath(src)
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dst = FreeBSD_DIR + '/' + org
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@ -257,6 +266,9 @@ def revertHeaderFile(org):
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os.makedirs(os.path.dirname(dst))
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except OSError:
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pass
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if target != "generic":
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print "Do not yet know how to revert target dependent files"
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sys.exit(1)
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data = open(src).read()
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out = open(dst, 'w')
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if org.find('rtems') == -1:
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@ -292,7 +304,8 @@ def deleteOutputDirectory():
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if isDryRun == True:
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return
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try:
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shutil.rmtree(RTEMS_DIR)
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print "Deleting output directory needs to be more precise"
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#shutil.rmtree(RTEMS_DIR)
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except OSError:
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pass
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@ -313,21 +326,22 @@ class ModuleManager:
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installEmptyFile(f)
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for m in self.modules:
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for f in m.headerFiles:
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installHeaderFile(f)
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installHeaderFile(f, m.target)
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for f in m.sourceFiles:
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installSourceFile(f)
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def revertFiles(self):
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for m in self.modules:
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for f in m.headerFiles:
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revertHeaderFile(f)
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revertHeaderFile(f, m.target)
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for f in m.sourceFiles:
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revertSourceFile(f)
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def createMakefile(self):
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if isVerbose == True:
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print "Create Makefile"
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global tempFile
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if isDryRun == True:
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if isVerbose == True:
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print "Create Makefile"
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return
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data = 'include config.inc\n' \
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'\n' \
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@ -338,6 +352,7 @@ class ModuleManager:
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'CFLAGS += -ffreestanding \n' \
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'CFLAGS += -I . \n' \
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'CFLAGS += -I rtemsbsd \n' \
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'CFLAGS += -I freebsd/$(RTEMS_CPU)/include \n' \
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'CFLAGS += -I contrib/altq \n' \
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'CFLAGS += -I contrib/pf \n' \
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'CFLAGS += -B $(INSTALL_BASE) \n' \
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@ -346,15 +361,32 @@ class ModuleManager:
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'\n'
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data += 'C_FILES ='
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for m in self.modules:
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for f in m.sourceFiles:
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f = PREFIX + '/' + f
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f = mapContribPath(f)
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data += ' \\\n\t' + f
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if m.target == "generic":
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for f in m.sourceFiles:
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f = PREFIX + '/' + f
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f = mapContribPath(f)
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data += ' \\\n\t' + f
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data += '\n'
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data += '# RTEMS Project Owned Files\n'
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data += 'C_FILES +='
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for f in rtems_sourceFiles:
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f = 'rtemsbsd/' + f
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data += ' \\\n\t' + f
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data += ' \\\n\trtemsbsd/' + f
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data += '\n'
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data += '\n'
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for m in self.modules:
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if m.target != "generic":
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data += "ifeq ($(RTEMS_CPU)," + m.target + ")\n"
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data += "C_FILES +="
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for f in m.sourceFiles:
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f = PREFIX + '/' + f
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f = mapContribPath(f)
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data += ' \\\n\t' + f
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data += '\n'
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data += 'endif\n'
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data += '\nC_O_FILES = $(C_FILES:%.c=%.o)\n' \
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data += '\n' \
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'C_O_FILES = $(C_FILES:%.c=%.o)\n' \
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'C_DEP_FILES = $(C_FILES:%.c=%.dep)\n' \
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'\n' \
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'LIB = libbsd.a\n' \
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@ -380,18 +412,26 @@ class ModuleManager:
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'\trm -f $(LIB) $(C_O_FILES) $(C_DEP_FILES)\n' \
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'\n' \
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'-include $(C_DEP_FILES)\n'
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out = open(RTEMS_DIR + '/Makefile', 'w')
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out = open(tempFile, 'w')
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out.write(data)
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out.close()
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makefile = RTEMS_DIR + '/Makefile'
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if copyIfDifferent(tempFile, makefile) == True:
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if isVerbose == True:
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print "Create Makefile"
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# Module - logical group of related files we can perform actions on
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class Module:
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def __init__(self, name):
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self.name = name
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self.target = "generic"
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self.headerFiles = []
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self.sourceFiles = []
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self.dependencies = []
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def setTarget(self, value):
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self.target = value
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def addHeaderFiles(self, files):
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self.headerFiles.extend(files)
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for file in files:
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@ -403,7 +443,8 @@ class Module:
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def addSourceFiles(self, files):
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self.sourceFiles.extend(files)
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for file in files:
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if file[-2] != '.' or file[-1] != 'c':
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if file[-2] != '.' or \
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(file[-1] != 'c' and file[-1] != 'S'):
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print "*** " + file + " does not end in .c"
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print "*** Move it to a header file list"
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sys.exit(2)
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@ -417,7 +458,6 @@ class Module:
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mm = ModuleManager()
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rtems_headerFiles = [
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'rtems/machine/in_cksum.h', # logically a net file
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'rtems/machine/atomic.h',
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'rtems/machine/_bus.h',
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'rtems/machine/bus.h',
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@ -996,7 +1036,6 @@ devUsbBase.addSourceFiles(
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#'kern/kern_mib.c',
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'kern/kern_mbuf.c',
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'kern/kern_module.c',
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'kern/kern_subr.c',
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'kern/kern_sysctl.c',
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'kern/subr_bus.c',
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'kern/subr_kobj.c',
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@ -1059,7 +1098,6 @@ devNet.addSourceFiles(
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)
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netDeps = Module('netDeps')
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# logically machine/in_cksum.h is part of this group but RTEMS provides its own
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netDeps.addHeaderFiles(
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[
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'security/mac/mac_framework.h',
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@ -1147,6 +1185,7 @@ net.addHeaderFiles(
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)
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net.addSourceFiles(
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[
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'kern/kern_subr.c',
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'net/bridgestp.c',
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'net/ieee8023ad_lacp.c',
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'net/if_atmsubr.c',
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@ -1271,6 +1310,7 @@ netinet.addHeaderFiles(
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'netinet/libalias/alias_sctp.h',
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]
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)
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# in_cksum.c is architecture dependent
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netinet.addSourceFiles(
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[
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'netinet/accf_data.c',
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@ -1280,7 +1320,6 @@ netinet.addSourceFiles(
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'netinet/if_ether.c',
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'netinet/igmp.c',
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'netinet/in.c',
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'netinet/in_cksum.c',
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'netinet/in_gif.c',
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'netinet/in_mcast.c',
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'netinet/in_pcb.c',
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@ -1639,6 +1678,7 @@ altq.addSourceFiles(
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]
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)
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# contrib/pf Module
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pf = Module('pf')
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pf.addHeaderFiles(
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[
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@ -1664,6 +1704,78 @@ pf.addSourceFiles(
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]
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)
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# ARM Architecture Specific Files Module
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armDependent = Module('armDependent')
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armDependent.setTarget("arm")
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armDependent.addHeaderFiles(
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[
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'arm/include/in_cksum.h',
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]
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)
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armDependent.addSourceFiles(
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[
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'arm/arm/in_cksum.c',
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'arm/arm/in_cksum_arm.S',
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]
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)
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# i386 Architecture Specific Files Module
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i386Dependent = Module('i386Dependent')
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i386Dependent.setTarget("i386")
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i386Dependent.addHeaderFiles(
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[
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'i386/include/in_cksum.h',
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]
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||||
)
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i386Dependent.addSourceFiles(
|
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[
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'i386/i386/in_cksum.c',
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]
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)
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# MIPS Architecture Specific Files Module
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mipsDependent = Module('mipsDependent')
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mipsDependent.setTarget("mips")
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mipsDependent.addHeaderFiles(
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[
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'mips/include/in_cksum.h',
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]
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)
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mipsDependent.addSourceFiles(
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[
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'mips/mips/in_cksum.c',
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]
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)
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||||
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# PowerPC Architecture Specific Files Module
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||||
powerpcDependent = Module('powerpcDependent')
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powerpcDependent.setTarget("powerpc")
|
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powerpcDependent.addHeaderFiles(
|
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[
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'powerpc/include/in_cksum.h',
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]
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||||
)
|
||||
powerpcDependent.addSourceFiles(
|
||||
[
|
||||
'powerpc/powerpc/in_cksum.c',
|
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]
|
||||
)
|
||||
|
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# SPARC64 Architecture Specific Files Module
|
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sparc64Dependent = Module('cpu_dependent')
|
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sparc64Dependent.setTarget("powerpc")
|
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sparc64Dependent.addHeaderFiles(
|
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[
|
||||
'sparc64/include/in_cksum.h',
|
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]
|
||||
)
|
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sparc64Dependent.addSourceFiles(
|
||||
[
|
||||
'sparc64/sparc64/in_cksum.c',
|
||||
]
|
||||
)
|
||||
|
||||
# Add Empty Files
|
||||
mm.addEmptyFiles(
|
||||
[
|
||||
'cam/cam_queue.h',
|
||||
@ -1731,7 +1843,6 @@ mm.addModule(altq)
|
||||
mm.addModule(pf)
|
||||
mm.addModule(devNet)
|
||||
|
||||
# mm.addModule(rtems)
|
||||
mm.addModule(local)
|
||||
mm.addModule(devUsbBase)
|
||||
mm.addModule(devUsb)
|
||||
@ -1740,9 +1851,15 @@ mm.addModule(devUsbController)
|
||||
|
||||
mm.addModule(cam)
|
||||
mm.addModule(devUsbStorage)
|
||||
|
||||
#mm.addModule(devUsbNet)
|
||||
|
||||
# Now add CPU Architecture Dependent Modules
|
||||
#mm.addModule(armDependent)
|
||||
#mm.addModule(i386Dependent)
|
||||
#mm.addModule(mipsDependent)
|
||||
mm.addModule(powerpcDependent)
|
||||
#mm.addModule(sparc64Dependent)
|
||||
|
||||
# Perform the actual file manipulation
|
||||
if isForward == True:
|
||||
if isOnlyMakefile == False:
|
||||
@ -1751,3 +1868,7 @@ if isForward == True:
|
||||
else:
|
||||
mm.revertFiles()
|
||||
|
||||
if filesChanged == 1:
|
||||
print str(filesChanged) + " file was changed."
|
||||
else:
|
||||
print str(filesChanged) + " files were changed."
|
||||
|
||||
76
freebsd/powerpc/include/freebsd/machine/in_cksum.h
Normal file
76
freebsd/powerpc/include/freebsd/machine/in_cksum.h
Normal file
@ -0,0 +1,76 @@
|
||||
/*-
|
||||
* Copyright (c) 1990 The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* from tahoe: in_cksum.c 1.2 86/01/05
|
||||
* from: @(#)in_cksum.c 1.3 (Berkeley) 1/19/91
|
||||
* from: Id: in_cksum.c,v 1.8 1995/12/03 18:35:19 bde Exp
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#ifndef _MACHINE_IN_CKSUM_HH_
|
||||
#define _MACHINE_IN_CKSUM_HH_ 1
|
||||
|
||||
#include <freebsd/sys/cdefs.h>
|
||||
|
||||
#define in_cksum(m, len) in_cksum_skip(m, len, 0)
|
||||
|
||||
/*
|
||||
* It it useful to have an Internet checksum routine which is inlineable
|
||||
* and optimized specifically for the task of computing IP header checksums
|
||||
* in the normal case (where there are no options and the header length is
|
||||
* therefore always exactly five 32-bit words.
|
||||
*/
|
||||
#ifdef __CC_SUPPORTS___INLINE
|
||||
|
||||
static __inline void
|
||||
in_cksum_update(struct ip *ip)
|
||||
{
|
||||
int __tmpsum;
|
||||
__tmpsum = (int)ntohs(ip->ip_sum) + 256;
|
||||
ip->ip_sum = htons(__tmpsum + (__tmpsum >> 16));
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
#define in_cksum_update(ip) \
|
||||
do { \
|
||||
int __tmpsum; \
|
||||
__tmpsum = (int)ntohs(ip->ip_sum) + 256; \
|
||||
ip->ip_sum = htons(__tmpsum + (__tmpsum >> 16)); \
|
||||
} while(0)
|
||||
|
||||
#endif
|
||||
|
||||
#ifdef _KERNEL
|
||||
u_int in_cksum_hdr(const struct ip *ip);
|
||||
u_short in_addword(u_short sum, u_short b);
|
||||
u_short in_pseudo(u_int sum, u_int b, u_int c);
|
||||
u_short in_cksum_skip(struct mbuf *m, int len, int skip);
|
||||
#endif
|
||||
|
||||
#endif /* _MACHINE_IN_CKSUM_HH_ */
|
||||
257
freebsd/powerpc/powerpc/in_cksum.c
Normal file
257
freebsd/powerpc/powerpc/in_cksum.c
Normal file
@ -0,0 +1,257 @@
|
||||
#include <freebsd/machine/rtems-bsd-config.h>
|
||||
|
||||
/* $FreeBSD$ */
|
||||
/* $NetBSD: in_cksum.c,v 1.7 1997/09/02 13:18:15 thorpej Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1988, 1992, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
* Copyright (c) 1996
|
||||
* Matt Thomas <matt@3am-software.com>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)in_cksum.c 8.1 (Berkeley) 6/10/93
|
||||
*/
|
||||
|
||||
#include <freebsd/sys/cdefs.h> /* RCS ID & Copyright macro defns */
|
||||
|
||||
#include <freebsd/sys/param.h>
|
||||
#include <freebsd/sys/mbuf.h>
|
||||
#include <freebsd/sys/systm.h>
|
||||
#include <freebsd/netinet/in_systm.h>
|
||||
#include <freebsd/netinet/in.h>
|
||||
#include <freebsd/netinet/ip.h>
|
||||
#include <freebsd/machine/in_cksum.h>
|
||||
|
||||
/*
|
||||
* Checksum routine for Internet Protocol family headers
|
||||
* (Portable Alpha version).
|
||||
*
|
||||
* This routine is very heavily used in the network
|
||||
* code and should be modified for each CPU to be as fast as possible.
|
||||
*/
|
||||
|
||||
#define ADDCARRY(x) (x > 65535 ? x -= 65535 : x)
|
||||
#define REDUCE32 \
|
||||
{ \
|
||||
q_util.q = sum; \
|
||||
sum = q_util.s[0] + q_util.s[1] + q_util.s[2] + q_util.s[3]; \
|
||||
}
|
||||
#define REDUCE16 \
|
||||
{ \
|
||||
q_util.q = sum; \
|
||||
l_util.l = q_util.s[0] + q_util.s[1] + q_util.s[2] + q_util.s[3]; \
|
||||
sum = l_util.s[0] + l_util.s[1]; \
|
||||
ADDCARRY(sum); \
|
||||
}
|
||||
|
||||
static const u_int32_t in_masks[] = {
|
||||
#if 0
|
||||
/*0 bytes*/ /*1 byte*/ /*2 bytes*/ /*3 bytes*/
|
||||
0x00000000, 0x000000FF, 0x0000FFFF, 0x00FFFFFF, /* offset 0 */
|
||||
0x00000000, 0x0000FF00, 0x00FFFF00, 0xFFFFFF00, /* offset 1 */
|
||||
0x00000000, 0x00FF0000, 0xFFFF0000, 0xFFFF0000, /* offset 2 */
|
||||
0x00000000, 0xFF000000, 0xFF000000, 0xFF000000, /* offset 3 */
|
||||
#else
|
||||
/*0 bytes*/ /*1 byte*/ /*2 bytes*/ /*3 bytes*/
|
||||
0x00000000, 0xFF000000, 0xFFFF0000, 0xFFFFFF00, /* offset 0 */
|
||||
0x00000000, 0x00FF0000, 0x00FFFF00, 0x00FFFFFF, /* offset 1 */
|
||||
0x00000000, 0x0000FF00, 0x0000FFFF, 0x0000FFFF, /* offset 2 */
|
||||
0x00000000, 0x000000FF, 0x000000FF, 0x000000FF, /* offset 3 */
|
||||
#endif
|
||||
};
|
||||
|
||||
union l_util {
|
||||
u_int16_t s[2];
|
||||
u_int32_t l;
|
||||
};
|
||||
union q_util {
|
||||
u_int16_t s[4];
|
||||
u_int32_t l[2];
|
||||
u_int64_t q;
|
||||
};
|
||||
|
||||
static u_int64_t
|
||||
in_cksumdata(const void *buf, int len)
|
||||
{
|
||||
const u_int32_t *lw = (const u_int32_t *) buf;
|
||||
u_int64_t sum = 0;
|
||||
u_int64_t prefilled;
|
||||
int offset;
|
||||
union q_util q_util;
|
||||
|
||||
if ((3 & (long) lw) == 0 && len == 20) {
|
||||
sum = (u_int64_t) lw[0] + lw[1] + lw[2] + lw[3] + lw[4];
|
||||
REDUCE32;
|
||||
return sum;
|
||||
}
|
||||
|
||||
if ((offset = 3 & (long) lw) != 0) {
|
||||
const u_int32_t *masks = in_masks + (offset << 2);
|
||||
lw = (u_int32_t *) (((long) lw) - offset);
|
||||
sum = *lw++ & masks[len >= 3 ? 3 : len];
|
||||
len -= 4 - offset;
|
||||
if (len <= 0) {
|
||||
REDUCE32;
|
||||
return sum;
|
||||
}
|
||||
}
|
||||
#if 0
|
||||
/*
|
||||
* Force to cache line boundary.
|
||||
*/
|
||||
offset = 32 - (0x1f & (long) lw);
|
||||
if (offset < 32 && len > offset) {
|
||||
len -= offset;
|
||||
if (4 & offset) {
|
||||
sum += (u_int64_t) lw[0];
|
||||
lw += 1;
|
||||
}
|
||||
if (8 & offset) {
|
||||
sum += (u_int64_t) lw[0] + lw[1];
|
||||
lw += 2;
|
||||
}
|
||||
if (16 & offset) {
|
||||
sum += (u_int64_t) lw[0] + lw[1] + lw[2] + lw[3];
|
||||
lw += 4;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
/*
|
||||
* access prefilling to start load of next cache line.
|
||||
* then add current cache line
|
||||
* save result of prefilling for loop iteration.
|
||||
*/
|
||||
prefilled = lw[0];
|
||||
while ((len -= 32) >= 4) {
|
||||
u_int64_t prefilling = lw[8];
|
||||
sum += prefilled + lw[1] + lw[2] + lw[3]
|
||||
+ lw[4] + lw[5] + lw[6] + lw[7];
|
||||
lw += 8;
|
||||
prefilled = prefilling;
|
||||
}
|
||||
if (len >= 0) {
|
||||
sum += prefilled + lw[1] + lw[2] + lw[3]
|
||||
+ lw[4] + lw[5] + lw[6] + lw[7];
|
||||
lw += 8;
|
||||
} else {
|
||||
len += 32;
|
||||
}
|
||||
while ((len -= 16) >= 0) {
|
||||
sum += (u_int64_t) lw[0] + lw[1] + lw[2] + lw[3];
|
||||
lw += 4;
|
||||
}
|
||||
len += 16;
|
||||
while ((len -= 4) >= 0) {
|
||||
sum += (u_int64_t) *lw++;
|
||||
}
|
||||
len += 4;
|
||||
if (len > 0)
|
||||
sum += (u_int64_t) (in_masks[len] & *lw);
|
||||
REDUCE32;
|
||||
return sum;
|
||||
}
|
||||
|
||||
u_short
|
||||
in_addword(u_short a, u_short b)
|
||||
{
|
||||
u_int64_t sum = a + b;
|
||||
|
||||
ADDCARRY(sum);
|
||||
return (sum);
|
||||
}
|
||||
|
||||
u_short
|
||||
#ifdef __rtems__
|
||||
/* prototype does not match in FreeBSD code */
|
||||
in_pseudo(u_int a, u_int b, u_int c)
|
||||
#else
|
||||
in_pseudo(u_int32_t a, u_int32_t b, u_int32_t c)
|
||||
#endif
|
||||
{
|
||||
u_int64_t sum;
|
||||
union q_util q_util;
|
||||
union l_util l_util;
|
||||
|
||||
sum = (u_int64_t) a + b + c;
|
||||
REDUCE16;
|
||||
return (sum);
|
||||
}
|
||||
|
||||
u_short
|
||||
in_cksum_skip(struct mbuf *m, int len, int skip)
|
||||
{
|
||||
u_int64_t sum = 0;
|
||||
int mlen = 0;
|
||||
int clen = 0;
|
||||
caddr_t addr;
|
||||
union q_util q_util;
|
||||
union l_util l_util;
|
||||
|
||||
len -= skip;
|
||||
for (; skip && m; m = m->m_next) {
|
||||
if (m->m_len > skip) {
|
||||
mlen = m->m_len - skip;
|
||||
addr = mtod(m, caddr_t) + skip;
|
||||
goto skip_start;
|
||||
} else {
|
||||
skip -= m->m_len;
|
||||
}
|
||||
}
|
||||
|
||||
for (; m && len; m = m->m_next) {
|
||||
if (m->m_len == 0)
|
||||
continue;
|
||||
mlen = m->m_len;
|
||||
addr = mtod(m, caddr_t);
|
||||
skip_start:
|
||||
if (len < mlen)
|
||||
mlen = len;
|
||||
|
||||
if ((clen ^ (int) addr) & 1)
|
||||
sum += in_cksumdata(addr, mlen) << 8;
|
||||
else
|
||||
sum += in_cksumdata(addr, mlen);
|
||||
|
||||
clen += mlen;
|
||||
len -= mlen;
|
||||
}
|
||||
REDUCE16;
|
||||
return (~sum & 0xffff);
|
||||
}
|
||||
|
||||
u_int in_cksum_hdr(const struct ip *ip)
|
||||
{
|
||||
u_int64_t sum = in_cksumdata(ip, sizeof(struct ip));
|
||||
union q_util q_util;
|
||||
union l_util l_util;
|
||||
REDUCE16;
|
||||
return (~sum & 0xffff);
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user