Add veth driver in libveth
Signed-off-by: Avik Sil <aviksil@linux.vnet.ibm.com> Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
This commit is contained in:
Avik Sil
Nikunj A Dadhania
parent
16e4888783
commit
eb5994df20
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@ -14,7 +14,8 @@ BOARD_TARGETS = tools_build romfs_build clients_build netdrivers stage1 subdirs
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SUBDIRS = slof veth virtio-net
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COMMON_LIBS = libc libbootmsg libbases libnvram libelf libhvcall libvirtio libusb
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COMMON_LIBS = libc libbootmsg libbases libnvram libelf libhvcall libvirtio libusb \
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libveth
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all: $(BOARD_TARGETS)
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$(MAKE) boot_rom.bin
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@ -21,14 +21,15 @@ all: Makefile.dep OF.ffs paflof $(SLOFCMNDIR)/xvect.bin
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CPPFLAGS = -I$(LIBCMNDIR)/libbootmsg -I$(LIBCMNDIR)/libhvcall \
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-I$(LIBCMNDIR)/libvirtio -I$(LIBCMNDIR)/libnvram \
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-I$(LIBCMNDIR)/libusb
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-I$(LIBCMNDIR)/libusb -I$(LIBCMNDIR)/libveth
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SLOF_LIBS = \
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$(LIBCMNDIR)/libbootmsg.a \
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$(LIBCMNDIR)/libelf.a \
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$(LIBCMNDIR)/libhvcall.a \
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$(LIBCMNDIR)/libvirtio.a \
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$(LIBCMNDIR)/libusb.a \
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$(LIBCMNDIR)/libnvram.a
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$(LIBCMNDIR)/libnvram.a \
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$(LIBCMNDIR)/libveth.a
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BOARD_SLOF_IN = \
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$(LIBCMNDIR)/libhvcall/hvcall.in \
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$(LIBCMNDIR)/libvirtio/virtio.in \
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@ -36,7 +37,8 @@ BOARD_SLOF_IN = \
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$(LIBCMNDIR)/libbootmsg/bootmsg.in \
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$(LIBCMNDIR)/libelf/libelf.in \
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$(LIBCMNDIR)/libnvram/libnvram.in \
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$(LIBCMNDIR)/libbases/libbases.in
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$(LIBCMNDIR)/libbases/libbases.in \
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$(LIBCMNDIR)/libveth/veth.in
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BOARD_SLOF_CODE = $(BOARD_SLOF_IN:%.in=%.code)
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include $(SLOFCMNDIR)/Makefile.inc
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@ -15,14 +15,41 @@
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" network" device-type
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INSTANCE VARIABLE obp-tftp-package
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0 VALUE veth-priv
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0 VALUE open-count
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: open ( -- okay? )
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my-unit 1 rtas-set-tce-bypass
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my-args s" obp-tftp" $open-package obp-tftp-package ! true
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open-count 0= IF
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my-unit 1 rtas-set-tce-bypass
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my-args s" obp-tftp" $open-package obp-tftp-package !
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s" local-mac-address" get-node get-property not
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s" reg" get-node get-property not 3 pick and IF
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>r nip r>
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libveth-open dup not IF ." libveth-open failed" EXIT THEN
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drop TO veth-priv
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THEN
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THEN
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open-count 1 + to open-count
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true
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;
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: close ( -- )
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s" close" obp-tftp-package @ $call-method
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my-unit 0 rtas-set-tce-bypass
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open-count 0> IF
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open-count 1 - dup to open-count
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0= IF
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s" close" obp-tftp-package @ $call-method
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veth-priv libveth-close
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my-unit 0 rtas-set-tce-bypass
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THEN
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THEN
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;
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: read ( buf len -- actual )
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veth-priv libveth-read
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;
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: write ( buf len -- actual )
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veth-priv libveth-write
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;
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: load ( addr -- len )
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@ -38,7 +38,6 @@ typedef struct {
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static const mod_descriptor_t modules[] = {
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{ "net_e1000", MOD_TYPE_NETWORK },
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{ "net_bcm", MOD_TYPE_NETWORK },
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{ "net_veth", MOD_TYPE_NETWORK },
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{ "net_virtio", MOD_TYPE_NETWORK },
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{ NULL, 0 }
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};
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@ -0,0 +1,24 @@
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/******************************************************************************
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* Copyright (c) 2013 IBM Corporation
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* All rights reserved.
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* This program and the accompanying materials
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* are made available under the terms of the BSD License
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* which accompanies this distribution, and is available at
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* http://www.opensource.org/licenses/bsd-license.php
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*
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* Contributors:
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* IBM Corporation - initial implementation
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******************************************************************************/
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#ifndef _NETDRIVER_H
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#define _NETDRIVER_H
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#include <stdint.h>
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typedef struct net_driver {
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uint8_t mac_addr[6];
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uint32_t reg;
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int running;
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} net_driver_t;
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#endif
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@ -10,7 +10,8 @@
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# * IBM Corporation - initial implementation
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# ****************************************************************************/
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SUBDIRS = libc libipmi libbootmsg libbases libnvram libelf libhvcall libvirtio libusb
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SUBDIRS = libc libipmi libbootmsg libbases libnvram libelf libhvcall libvirtio \
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libusb libveth
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all: subdirs
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@ -0,0 +1,50 @@
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# *****************************************************************************
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# * Copyright (c) 2004, 2008 IBM Corporation
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# * All rights reserved.
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# * This program and the accompanying materials
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# * are made available under the terms of the BSD License
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# * which accompanies this distribution, and is available at
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# * http://www.opensource.org/licenses/bsd-license.php
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# *
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# * Contributors:
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# * IBM Corporation - initial implementation
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# ****************************************************************************/
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TOPCMNDIR ?= ../..
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CPPFLAGS = -I../libc/include $(CPUARCHDEF) -I$(INCLBRDDIR) \
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-I$(INCLCMNDIR) -I$(INCLCMNDIR)/$(CPUARCH)
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CPPFLAGS += -I../libhvcall
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LDFLAGS = -nostdlib
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TARGET = ../libveth.a
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all: $(TARGET)
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SRCS = veth.c
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OBJS = $(SRCS:%.c=%.o)
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$(TARGET): $(OBJS)
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$(AR) -rc $@ $(OBJS)
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$(RANLIB) $@
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clean:
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$(RM) $(TARGET) $(OBJS)
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distclean: clean
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$(RM) Makefile.dep
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# Rules for creating the dependency file:
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depend:
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$(RM) Makefile.dep
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$(MAKE) Makefile.dep
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Makefile.dep: Makefile
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$(CC) -M $(CPPFLAGS) $(CFLAGS) $(SRCS) $(SRCSS) > Makefile.dep
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# Include dependency file if available:
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-include Makefile.dep
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@ -0,0 +1,273 @@
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/******************************************************************************
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* Copyright (c) 2011, 2013 IBM Corporation
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* All rights reserved.
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* This program and the accompanying materials
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* are made available under the terms of the BSD License
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* which accompanies this distribution, and is available at
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* http://www.opensource.org/licenses/bsd-license.php
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*
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* Contributors:
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* IBM Corporation - initial implementation
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*****************************************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <helpers.h>
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#include "veth.h"
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#include "libhvcall.h"
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#undef VETH_DEBUG
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//#define VETH_DEBUG
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#ifdef VETH_DEBUG
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#define dprintf(_x ...) printf(_x)
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#else
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#define dprintf(_x ...)
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#endif
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/* *** WARNING: We pass our addresses as-is as DMA addresses,
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* we -do- rely on the forth code to have enabled TCE bypass
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* on our device !
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*/
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#define vaddr_to_dma(vaddr) ((uint64_t)vaddr)
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struct ibmveth_buf_desc_fields {
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uint32_t flags_len;
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#define IBMVETH_BUF_VALID 0x80000000
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#define IBMVETH_BUF_TOGGLE 0x40000000
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#define IBMVETH_BUF_NO_CSUM 0x02000000
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#define IBMVETH_BUF_CSUM_GOOD 0x01000000
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#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF
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uint32_t address;
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};
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union ibmveth_buf_desc {
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uint64_t desc;
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struct ibmveth_buf_desc_fields fields;
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};
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struct ibmveth_rx_q_entry {
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uint32_t flags_off;
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#define IBMVETH_RXQ_TOGGLE 0x80000000
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#define IBMVETH_RXQ_TOGGLE_SHIFT 31
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#define IBMVETH_RXQ_VALID 0x40000000
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#define IBMVETH_RXQ_NO_CSUM 0x02000000
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#define IBMVETH_RXQ_CSUM_GOOD 0x01000000
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#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF
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uint32_t length;
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uint64_t correlator;
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};
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static void *buffer_list;
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static void *filter_list;
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static uint64_t *rx_bufs;
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static uint64_t *rx_bufs_aligned;
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static uint32_t cur_rx_toggle;
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static uint32_t cur_rx_index;
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#define RX_QUEUE_SIZE 16
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#define RX_BUF_SIZE 2048
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#define RX_BUF_MULT (RX_BUF_SIZE >> 3)
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static struct ibmveth_rx_q_entry *rx_queue;
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static inline uint64_t *veth_get_rx_buf(unsigned int i)
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{
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return &rx_bufs_aligned[i * RX_BUF_MULT];
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}
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static int veth_init(net_driver_t *driver)
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{
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char *mac_addr;
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union ibmveth_buf_desc rxq_desc;
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unsigned long rx_queue_len = sizeof(struct ibmveth_rx_q_entry) *
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RX_QUEUE_SIZE;
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unsigned int i;
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long rc;
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if (!driver)
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return -1;
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dprintf("veth_init(%02x:%02x:%02x:%02x:%02x:%02x)\n",
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mac_addr[0], mac_addr[1], mac_addr[2],
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mac_addr[3], mac_addr[4], mac_addr[5]);
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if (driver->running != 0)
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return 0;
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mac_addr = (char *)driver->mac_addr;
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cur_rx_toggle = IBMVETH_RXQ_TOGGLE;
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cur_rx_index = 0;
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buffer_list = SLOF_alloc_mem_aligned(8192, 4096);
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filter_list = buffer_list + 4096;
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rx_queue = SLOF_alloc_mem_aligned(rx_queue_len, 16);
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rx_bufs = SLOF_alloc_mem(2048 * RX_QUEUE_SIZE + 4);
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if (!buffer_list || !filter_list || !rx_queue || !rx_bufs) {
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printf("veth: Failed to allocate memory !\n");
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goto fail;
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}
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rx_bufs_aligned = (uint64_t *)(((uint64_t)rx_bufs | 3) + 1);
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rxq_desc.fields.address = vaddr_to_dma(rx_queue);
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rxq_desc.fields.flags_len = IBMVETH_BUF_VALID | rx_queue_len;
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rc = h_register_logical_lan(driver->reg,
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vaddr_to_dma(buffer_list),
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rxq_desc.desc,
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vaddr_to_dma(filter_list),
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(*(uint64_t *)mac_addr) >> 16);
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if (rc != H_SUCCESS) {
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printf("veth: Error %ld registering interface !\n", rc);
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goto fail;
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}
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for (i = 0; i < RX_QUEUE_SIZE; i++) {
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uint64_t *buf = veth_get_rx_buf(i);
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union ibmveth_buf_desc desc;
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*buf = (uint64_t)buf;
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desc.fields.address = vaddr_to_dma(buf);
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desc.fields.flags_len = IBMVETH_BUF_VALID | RX_BUF_SIZE;
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h_add_logical_lan_buffer(driver->reg, desc.desc);
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}
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driver->running = 1;
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return 0;
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fail:
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if (buffer_list)
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SLOF_free_mem(buffer_list, 8192);
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if (rx_queue)
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SLOF_free_mem(rx_queue, rx_queue_len);
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if (rx_bufs)
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SLOF_free_mem(rx_bufs, 2048 * RX_QUEUE_SIZE + 4);
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return -1;
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}
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static int veth_term(net_driver_t *driver)
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{
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dprintf("veth_term()\n");
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if (driver->running == 0)
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return 0;
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h_free_logical_lan(driver->reg);
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if (buffer_list)
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SLOF_free_mem(buffer_list, 8192);
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if (rx_queue)
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SLOF_free_mem(rx_queue, sizeof(struct ibmveth_rx_q_entry) * RX_QUEUE_SIZE);
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if (rx_bufs)
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SLOF_free_mem(rx_bufs, 2048 * RX_QUEUE_SIZE + 4);
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driver->running = 0;
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return 0;
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}
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static int veth_receive(char *f_buffer_pc, int f_len_i, net_driver_t *driver)
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{
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int packet = 0;
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dprintf("veth_receive()\n");
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while(!packet) {
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struct ibmveth_rx_q_entry *desc = &rx_queue[cur_rx_index];
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union ibmveth_buf_desc bdesc;
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void *buf;
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buf = (void *)desc->correlator;
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if ((desc->flags_off & IBMVETH_RXQ_TOGGLE) != cur_rx_toggle)
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break;
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if (!(desc->flags_off & IBMVETH_RXQ_VALID))
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goto recycle;
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if (desc->length > f_len_i) {
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printf("veth: Dropping too big packet [%d bytes]\n",
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desc->length);
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goto recycle;
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}
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packet = desc->length;
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memcpy(f_buffer_pc,
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buf + (desc->flags_off & IBMVETH_RXQ_OFF_MASK), packet);
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recycle:
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bdesc.fields.address = vaddr_to_dma(buf);
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bdesc.fields.flags_len = IBMVETH_BUF_VALID | RX_BUF_SIZE;
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h_add_logical_lan_buffer(driver->reg, bdesc.desc);
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cur_rx_index = (cur_rx_index + 1) % RX_QUEUE_SIZE;
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if (cur_rx_index == 0)
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cur_rx_toggle ^= IBMVETH_RXQ_TOGGLE;
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}
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return packet;
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}
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static int veth_xmit(char *f_buffer_pc, int f_len_i, net_driver_t *driver)
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{
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union ibmveth_buf_desc tx_desc;
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long rc;
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dprintf("veth_xmit(packet at %p, %d bytes)\n", f_buffer_pc, f_len_i);
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tx_desc.fields.address = vaddr_to_dma(f_buffer_pc);
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tx_desc.fields.flags_len = IBMVETH_BUF_VALID | f_len_i;
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rc = hv_send_logical_lan(driver->reg, tx_desc.desc, 0, 0, 0, 0, 0);
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if (rc != H_SUCCESS) {
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printf("veth: Error %ld sending packet !\n", rc);
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return -1;
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}
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return f_len_i;
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}
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net_driver_t *libveth_open(char *mac_addr, int mac_len, char *reg, int reg_len)
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{
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net_driver_t *driver;
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driver = SLOF_alloc_mem(sizeof(*driver));
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if (!driver) {
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printf("Unable to allocate veth driver\n");
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return NULL;
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}
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/* veth uses a 8-byte wide property instead of 6-byte wide MACs */
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if ((mac_len == 8) && (mac_addr[0] == 0) && mac_addr[1] == 0)
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mac_addr += 2;
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memcpy(driver->mac_addr, mac_addr, 6);
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driver->reg = *(uint32_t *)reg;
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driver->running = 0;
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if (veth_init(driver)) {
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SLOF_free_mem(driver, sizeof(*driver));
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return NULL;
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}
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return driver;
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}
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void libveth_close(net_driver_t *driver)
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{
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if (driver) {
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veth_term(driver);
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SLOF_free_mem(driver, sizeof(*driver));
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}
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}
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int libveth_read(char *buf, int len, net_driver_t *driver)
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{
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if (buf)
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return veth_receive(buf, len, driver);
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return -1;
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}
|
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int libveth_write(char *buf, int len, net_driver_t *driver)
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{
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if (buf)
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return veth_xmit(buf, len, driver);
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|
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return -1;
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}
|
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|
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@ -0,0 +1,61 @@
|
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/******************************************************************************
|
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* Copyright (c) 2013 IBM Corporation
|
||||
* All rights reserved.
|
||||
* This program and the accompanying materials
|
||||
* are made available under the terms of the BSD License
|
||||
* which accompanies this distribution, and is available at
|
||||
* http://www.opensource.org/licenses/bsd-license.php
|
||||
*
|
||||
* Contributors:
|
||||
* IBM Corporation - initial implementation
|
||||
*****************************************************************************/
|
||||
|
||||
/*
|
||||
* libveth Forth wrapper
|
||||
*/
|
||||
|
||||
#include <veth.h>
|
||||
|
||||
// : libveth-open ( mac-addr-str len reg-str len -- false | [ driver true ] )
|
||||
PRIM(LIBVETH_X2d_OPEN)
|
||||
{
|
||||
int reg_len = TOS.u; POP;
|
||||
char *reg = TOS.a; POP;
|
||||
int len = TOS.u; POP;
|
||||
char *mac_addr = TOS.a;
|
||||
|
||||
net_driver_t *net_driver = libveth_open(mac_addr, len, reg, reg_len);
|
||||
if (net_driver) {
|
||||
TOS.u = (unsigned long)net_driver; PUSH;
|
||||
TOS.n = -1;
|
||||
} else
|
||||
TOS.n = 0;
|
||||
}
|
||||
MIRP
|
||||
|
||||
// : libveth-close ( driver -- )
|
||||
PRIM(LIBVETH_X2d_CLOSE)
|
||||
{
|
||||
net_driver_t *driver = TOS.a; POP;
|
||||
libveth_close(driver);
|
||||
}
|
||||
MIRP
|
||||
|
||||
|
||||
// : libveth-read ( addr len driver -- actual )
|
||||
PRIM(LIBVETH_X2d_READ)
|
||||
{
|
||||
net_driver_t *driver = TOS.a; POP;
|
||||
int len = TOS.u; POP;
|
||||
TOS.n = libveth_read(TOS.a, len, driver);
|
||||
}
|
||||
MIRP
|
||||
|
||||
// : libveth-write ( addr len driver -- actual )
|
||||
PRIM(LIBVETH_X2d_WRITE)
|
||||
{
|
||||
net_driver_t *driver = TOS.a; POP;
|
||||
int len = TOS.u; POP;
|
||||
TOS.n = libveth_write(TOS.a, len, driver);
|
||||
}
|
||||
MIRP
|
||||
|
|
@ -0,0 +1,24 @@
|
|||
/******************************************************************************
|
||||
* Copyright (c) 2013 IBM Corporation
|
||||
* All rights reserved.
|
||||
* This program and the accompanying materials
|
||||
* are made available under the terms of the BSD License
|
||||
* which accompanies this distribution, and is available at
|
||||
* http://www.opensource.org/licenses/bsd-license.php
|
||||
*
|
||||
* Contributors:
|
||||
* IBM Corporation - initial implementation
|
||||
******************************************************************************/
|
||||
|
||||
#ifndef _VETH_H
|
||||
#define _VETH_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include <netdriver.h>
|
||||
|
||||
extern net_driver_t *libveth_open(char *mac_addr, int mac_len, char *reg, int reg_len);
|
||||
extern void libveth_close(net_driver_t *driver);
|
||||
extern int libveth_read(char *buf, int len, net_driver_t *driver);
|
||||
extern int libveth_write(char *buf, int len, net_driver_t *driver);
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
/******************************************************************************
|
||||
* Copyright (c) 2013 IBM Corporation
|
||||
* All rights reserved.
|
||||
* This program and the accompanying materials
|
||||
* are made available under the terms of the BSD License
|
||||
* which accompanies this distribution, and is available at
|
||||
* http://www.opensource.org/licenses/bsd-license.php
|
||||
*
|
||||
* Contributors:
|
||||
* IBM Corporation - initial implementation
|
||||
*****************************************************************************/
|
||||
|
||||
/*
|
||||
* libveth bindings for Forth - definitions
|
||||
*/
|
||||
|
||||
cod(LIBVETH-OPEN)
|
||||
cod(LIBVETH-CLOSE)
|
||||
cod(LIBVETH-READ)
|
||||
cod(LIBVETH-WRITE)
|
||||
Loading…
Reference in New Issue