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add new switch configuration api

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SVN-Revision: 13009
This commit is contained in:
Felix Fietkau 2008-10-18 20:44:53 +00:00
parent fa6b452873
commit 487c622ac0
13 changed files with 3273 additions and 0 deletions
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47
package/swconfig/Makefile Normal file
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#
# Copyright (C) 2006 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
# $Id$
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=kmod-swconfig
PKG_RELEASE:=1
PKG_BUILD_DEPENDS:=libnl
include $(INCLUDE_DIR)/package.mk
define Package/swconfig
SECTION:=base
CATEGORY:=Base system
DEPENDS:=@LINUX_2_6_26||LINUX_2_6_27
TITLE:=Switch configuration utility
endef
TARGET_CPPFLAGS += \
-I$(STAGING_DIR)/usr/include \
-I$(LINUX_DIR)/include \
-I$(PKG_BUILD_DIR)
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/
endef
define Build/Compile
CFLAGS="$(TARGET_CFLAGS) $(TARGET_CPPFLAGS)" \
$(MAKE) -C $(PKG_BUILD_DIR) \
$(TARGET_CONFIGURE_OPTS) \
LIBS="$(STAGING_DIR)/usr/lib/libnl.a -lm"
endef
define Package/swconfig/install
$(INSTALL_DIR) $(1)/bin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/swconfig $(1)/bin/swconfig
endef
$(eval $(call BuildPackage,swconfig))

12
package/swconfig/src/Makefile Normal file
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ifndef CFLAGS
CFLAGS = -O2 -g -I ../src
endif
LIBS=-lnl
all: swconfig
%.o: %.c
$(CC) $(CFLAGS) -c -o $@ $^
swconfig: cli.o swlib.o
$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)

255
package/swconfig/src/cli.c Normal file
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/*
* swconfig.c: Switch configuration utility
*
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundatio.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>
#include <errno.h>
#include <stdint.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <linux/types.h>
#include <linux/netlink.h>
#include <linux/genetlink.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#include <linux/switch.h>
#include "swlib.h"
#define GET 1
#define SET 2
void print_attrs(struct switch_attr *attr)
{
int i = 0;
while (attr) {
const char *type;
switch(attr->type) {
case SWITCH_TYPE_INT:
type = "int";
break;
case SWITCH_TYPE_STRING:
type = "string";
break;
case SWITCH_TYPE_PORTS:
type = "ports";
break;
case SWITCH_TYPE_NOVAL:
type = "none";
break;
default:
type = "unknown";
break;
}
printf("\tAttribute %d (%s): %s (%s)\n", ++i, type, attr->name, attr->description);
attr = attr->next;
}
}
void list_attributes(struct switch_dev *dev)
{
printf("Switch %d: %s(%s), ports: %d, vlans: %d\n", dev->id, dev->dev_name, dev->name, dev->ports, dev->vlans);
printf(" --switch\n");
print_attrs(dev->ops);
printf(" --vlan\n");
print_attrs(dev->vlan_ops);
printf(" --port\n");
print_attrs(dev->port_ops);
}
void print_usage(void)
{
printf("swconfig dev <dev> [port <port>|vlan <vlan>] (help|set <key> <value>|get <key>)\n");
exit(0);
}
int main(int argc, char **argv)
{
int retval = 0;
struct switch_dev *dev;
struct switch_attr *a;
struct switch_val val;
int err;
int i;
struct switch_port *ports;
int cmd = 0;
char *cdev = NULL;
int cport = -1;
int cvlan = -1;
char *ckey = NULL;
char *cvalue = NULL;
int chelp = 0;
if(argc < 4)
print_usage();
if(strcmp(argv[1], "dev"))
print_usage();
cdev = argv[2];
for(i = 3; i < argc; i++)
{
int p;
if(!strcmp(argv[i], "help"))
{
chelp = 1;
continue;
}
if(i + 1 >= argc)
print_usage();
p = atoi(argv[i + 1]);
if(!strcmp(argv[i], "port"))
{
cport = p;
} else if(!strcmp(argv[i], "vlan"))
{
cvlan = p;
} else if(!strcmp(argv[i], "set"))
{
if(argc <= i + 1)
print_usage();
cmd = SET;
ckey = argv[i + 1];
if (argc > i + 2)
cvalue = argv[i + 2];
else
cvalue = NULL;
i++;
} else if(!strcmp(argv[i], "get"))
{
cmd = GET;
ckey = argv[i + 1];
} else{
print_usage();
}
i++;
}
if(cport > -1 && cvlan > -1)
print_usage();
dev = swlib_connect(cdev);
if (!dev) {
fprintf(stderr, "Failed to connect to the switch\n");
return 1;
}
ports = malloc(sizeof(struct switch_port) * dev->ports);
memset(ports, 0, sizeof(struct switch_port) * dev->ports);
swlib_scan(dev);
if(chelp)
{
list_attributes(dev);
goto out;
}
if(cport > -1)
a = swlib_lookup_attr(dev, SWLIB_ATTR_GROUP_PORT, ckey);
else if(cvlan > -1)
a = swlib_lookup_attr(dev, SWLIB_ATTR_GROUP_VLAN, ckey);
else
a = swlib_lookup_attr(dev, SWLIB_ATTR_GROUP_GLOBAL, ckey);
if(!a)
{
fprintf(stderr, "Unknown attribute \"%s\"\n", ckey);
goto out;
}
switch(cmd)
{
case SET:
if ((a->type != SWITCH_TYPE_NOVAL) &&
(cvalue == NULL))
print_usage();
switch(a->type) {
case SWITCH_TYPE_INT:
val.value.i = atoi(cvalue);
break;
case SWITCH_TYPE_STRING:
val.value.s = cvalue;
break;
case SWITCH_TYPE_PORTS:
val.len = 0;
while(cvalue && *cvalue)
{
ports[val.len].flags = 0;
ports[val.len].id = strtol(cvalue, &cvalue, 10);
while(*cvalue && !isspace(*cvalue)) {
if (*cvalue == 't')
ports[val.len].flags |= SWLIB_PORT_FLAG_TAGGED;
cvalue++;
}
if (*cvalue)
cvalue++;
val.len++;
}
val.value.ports = ports;
break;
default:
break;
}
if(cvlan > -1)
val.port_vlan = cvlan;
if(cport > -1)
val.port_vlan = cport;
if(swlib_set_attr(dev, a, &val) < 0)
{
fprintf(stderr, "failed\n");
retval = -1;
goto out;
}
break;
case GET:
if(cvlan > -1)
val.port_vlan = cvlan;
if(cport > -1)
val.port_vlan = cport;
if(swlib_get_attr(dev, a, &val) < 0)
{
fprintf(stderr, "failed\n");
retval = -1;
goto out;
}
switch(a->type) {
case SWITCH_TYPE_INT:
printf("%d\n", val.value.i);
break;
case SWITCH_TYPE_STRING:
printf("%s\n", val.value.s);
break;
case SWITCH_TYPE_PORTS:
for(i = 0; i < val.len; i++)
printf("%d ", val.value.ports[i]);
printf("\n");
break;
}
}
out:
swlib_free_all(dev);
free(ports);
return 0;
}

614
package/swconfig/src/swlib.c Normal file
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/*
* swlib.c: Switch configuration API (user space part)
*
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>
#include <errno.h>
#include <stdint.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <linux/switch.h>
#include "swlib.h"
//#define DEBUG 1
#ifdef DEBUG
#define DPRINTF(fmt, ...) fprintf(stderr, "%s(%d): " fmt, __func__, __LINE__, ##__VA_ARGS__)
#else
#define DPRINTF(fmt, ...) do {} while (0)
#endif
static struct nl_handle *handle;
static struct nl_cache *cache;
static struct genl_family *family;
static struct nlattr *tb[SWITCH_ATTR_MAX];
static int refcount = 0;
static struct nla_policy port_policy[] = {
[SWITCH_PORT_ID] = { .type = NLA_U32 },
[SWITCH_PORT_FLAG_TAGGED] = { .type = NLA_FLAG },
};
static inline void *
swlib_alloc(size_t size)
{
void *ptr;
ptr = malloc(size);
if (!ptr)
goto done;
memset(ptr, 0, size);
done:
return ptr;
}
static int
wait_handler(struct nl_msg *msg, void *arg)
{
int *finished = arg;
*finished = 1;
return NL_STOP;
}
/* helper function for performing netlink requests */
static int
swlib_call(int cmd, int (*call)(struct nl_msg *, void *),
int (*data)(struct nl_msg *, void *), void *arg)
{
struct nl_msg *msg;
struct nl_cb *cb = NULL;
int finished;
int flags = 0;
int err;
msg = nlmsg_alloc();
if (!msg) {
fprintf(stderr, "Out of memory!\n");
exit(1);
}
if (!data)
flags |= NLM_F_DUMP;
genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, genl_family_get_id(family), 0, flags, cmd, 0);
if (data) {
if (data(msg, arg) < 0)
goto nla_put_failure;
}
cb = nl_cb_alloc(NL_CB_CUSTOM);
if (!cb) {
fprintf(stderr, "nl_cb_alloc failed.\n");
exit(1);
}
err = nl_send_auto_complete(handle, msg);
if (err < 0) {
fprintf(stderr, "nl_send_auto_complete failed: %d\n", err);
goto out;
}
finished = 0;
if (call)
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, call, arg);
if (data)
nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, wait_handler, &finished);
else
nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, wait_handler, &finished);
err = nl_recvmsgs(handle, cb);
if (err < 0) {
goto out;
}
if (!finished)
err = nl_wait_for_ack(handle);
out:
if (cb)
nl_cb_put(cb);
nla_put_failure:
nlmsg_free(msg);
return err;
}
static int
send_attr(struct nl_msg *msg, void *arg)
{
struct switch_val *val = arg;
struct switch_attr *attr = val->attr;
NLA_PUT_U32(msg, SWITCH_ATTR_ID, attr->dev->id);
NLA_PUT_U32(msg, SWITCH_ATTR_OP_ID, attr->id);
switch(attr->atype) {
case SWLIB_ATTR_GROUP_PORT:
NLA_PUT_U32(msg, SWITCH_ATTR_OP_PORT, val->port_vlan);
break;
case SWLIB_ATTR_GROUP_VLAN:
NLA_PUT_U32(msg, SWITCH_ATTR_OP_VLAN, val->port_vlan);
break;
default:
break;
}
return 0;
nla_put_failure:
return -1;
}
static int
store_port_val(struct nl_msg *msg, struct nlattr *nla, struct switch_val *val)
{
struct nlattr *p;
int ports = val->attr->dev->ports;
int err = 0;
int remaining;
if (!val->value.ports)
val->value.ports = malloc(sizeof(struct switch_port) * ports);
nla_for_each_nested(p, nla, remaining) {
struct nlattr *tb[SWITCH_PORT_ATTR_MAX+1];
struct switch_port *port;
if (val->len >= ports)
break;
err = nla_parse_nested(tb, SWITCH_PORT_ATTR_MAX, p, port_policy);
if (err < 0)
goto out;
if (!tb[SWITCH_PORT_ID])
continue;
port = &val->value.ports[val->len];
port->id = nla_get_u32(tb[SWITCH_PORT_ID]);
port->flags = 0;
if (tb[SWITCH_PORT_FLAG_TAGGED])
port->flags |= SWLIB_PORT_FLAG_TAGGED;
val->len++;
}
out:
return err;
}
static int
store_val(struct nl_msg *msg, void *arg)
{
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct switch_val *val = arg;
struct switch_attr *attr = val->attr;
if (!val)
goto error;
if (nla_parse(tb, SWITCH_ATTR_MAX - 1, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL) < 0) {
goto error;
}
if (tb[SWITCH_ATTR_OP_VALUE_INT])
val->value.i = nla_get_u32(tb[SWITCH_ATTR_OP_VALUE_INT]);
else if (tb[SWITCH_ATTR_OP_VALUE_STR])
val->value.s = strdup(nla_get_string(tb[SWITCH_ATTR_OP_VALUE_STR]));
else if (tb[SWITCH_ATTR_OP_VALUE_PORTS])
val->err = store_port_val(msg, tb[SWITCH_ATTR_OP_VALUE_PORTS], val);
val->err = 0;
return 0;
error:
return NL_SKIP;
}
int
swlib_get_attr(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val)
{
int cmd;
int err;
switch(attr->atype) {
case SWLIB_ATTR_GROUP_GLOBAL:
cmd = SWITCH_CMD_GET_GLOBAL;
break;
case SWLIB_ATTR_GROUP_PORT:
cmd = SWITCH_CMD_GET_PORT;
break;
case SWLIB_ATTR_GROUP_VLAN:
cmd = SWITCH_CMD_GET_VLAN;
break;
default:
return -EINVAL;
}
memset(&val->value, 0, sizeof(val->value));
val->len = 0;
val->attr = attr;
val->err = -EINVAL;
err = swlib_call(cmd, store_val, send_attr, val);
if (!err)
err = val->err;
return err;
}
static int
send_attr_ports(struct nl_msg *msg, struct switch_val *val)
{
struct nlattr *n;
int i;
/* TODO implement multipart? */
if (val->len == 0)
goto done;
n = nla_nest_start(msg, SWITCH_ATTR_OP_VALUE_PORTS);
if (!n)
goto nla_put_failure;
for (i = 0; i < val->len; i++) {
struct switch_port *port = &val->value.ports[i];
struct nlattr *np;
np = nla_nest_start(msg, SWITCH_ATTR_PORT);
if (!np)
goto nla_put_failure;
NLA_PUT_U32(msg, SWITCH_PORT_ID, port->id);
if (port->flags & SWLIB_PORT_FLAG_TAGGED)
NLA_PUT_FLAG(msg, SWITCH_PORT_FLAG_TAGGED);
nla_nest_end(msg, np);
}
nla_nest_end(msg, n);
done:
return 0;
nla_put_failure:
return -1;
}
static int
send_attr_val(struct nl_msg *msg, void *arg)
{
struct switch_val *val = arg;
struct switch_attr *attr = val->attr;
if (send_attr(msg, arg))
goto nla_put_failure;
switch(attr->type) {
case SWITCH_TYPE_NOVAL:
break;
case SWITCH_TYPE_INT:
NLA_PUT_U32(msg, SWITCH_ATTR_OP_VALUE_INT, val->value.i);
break;
case SWITCH_TYPE_STRING:
if (!val->value.s)
goto nla_put_failure;
NLA_PUT_STRING(msg, SWITCH_ATTR_OP_VALUE_STR, val->value.s);
break;
case SWITCH_TYPE_PORTS:
if (send_attr_ports(msg, val) < 0)
goto nla_put_failure;
break;
default:
goto nla_put_failure;
}
return 0;
nla_put_failure:
return -1;
}
int
swlib_set_attr(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val)
{
int cmd;
switch(attr->atype) {
case SWLIB_ATTR_GROUP_GLOBAL:
cmd = SWITCH_CMD_SET_GLOBAL;
break;
case SWLIB_ATTR_GROUP_PORT:
cmd = SWITCH_CMD_SET_PORT;
break;
case SWLIB_ATTR_GROUP_VLAN:
cmd = SWITCH_CMD_SET_VLAN;
break;
default:
return -EINVAL;
}
val->attr = attr;
return swlib_call(cmd, NULL, send_attr_val, val);
}
struct attrlist_arg {
int id;
int atype;
struct switch_dev *dev;
struct switch_attr *prev;
struct switch_attr **head;
};
static int
add_id(struct nl_msg *msg, void *arg)
{
struct attrlist_arg *l = arg;
NLA_PUT_U32(msg, SWITCH_ATTR_ID, l->id);
return 0;
nla_put_failure:
return -1;
}
static int
add_attr(struct nl_msg *msg, void *ptr)
{
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct attrlist_arg *arg = ptr;
struct switch_attr *new;
if (nla_parse(tb, SWITCH_ATTR_MAX - 1, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL) < 0)
goto done;
new = swlib_alloc(sizeof(struct switch_attr));
if (!new)
goto done;
new->dev = arg->dev;
new->atype = arg->atype;
if (arg->prev) {
arg->prev->next = new;
} else {
arg->prev = *arg->head;
}
*arg->head = new;
arg->head = &new->next;
if (tb[SWITCH_ATTR_OP_ID])
new->id = nla_get_u32(tb[SWITCH_ATTR_OP_ID]);
if (tb[SWITCH_ATTR_OP_TYPE])
new->type = nla_get_u32(tb[SWITCH_ATTR_OP_TYPE]);
if (tb[SWITCH_ATTR_OP_NAME])
new->name = strdup(nla_get_string(tb[SWITCH_ATTR_OP_NAME]));
if (tb[SWITCH_ATTR_OP_DESCRIPTION])
new->description = strdup(nla_get_string(tb[SWITCH_ATTR_OP_DESCRIPTION]));
done:
return NL_SKIP;
}
int
swlib_scan(struct switch_dev *dev)
{
struct attrlist_arg arg;
if (dev->ops || dev->port_ops || dev->vlan_ops)
return 0;
arg.atype = SWLIB_ATTR_GROUP_GLOBAL;
arg.dev = dev;
arg.id = dev->id;
arg.prev = NULL;
arg.head = &dev->ops;
swlib_call(SWITCH_CMD_LIST_GLOBAL, add_attr, add_id, &arg);
arg.atype = SWLIB_ATTR_GROUP_PORT;
arg.prev = NULL;
arg.head = &dev->port_ops;
swlib_call(SWITCH_CMD_LIST_PORT, add_attr, add_id, &arg);
arg.atype = SWLIB_ATTR_GROUP_VLAN;
arg.prev = NULL;
arg.head = &dev->vlan_ops;
swlib_call(SWITCH_CMD_LIST_VLAN, add_attr, add_id, &arg);
return 0;
}
struct switch_attr *swlib_lookup_attr(struct switch_dev *dev,
enum swlib_attr_group atype, const char *name)
{
struct switch_attr *head;
if (!name || !dev)
return NULL;
switch(atype) {
case SWLIB_ATTR_GROUP_GLOBAL:
head = dev->ops;
break;
case SWLIB_ATTR_GROUP_PORT:
head = dev->port_ops;
break;
case SWLIB_ATTR_GROUP_VLAN:
head = dev->vlan_ops;
break;
}
while(head) {
if (!strcmp(name, head->name))
return head;
head = head->next;
}
return NULL;
}
static void
swlib_priv_free(void)
{
if (cache)
nl_cache_free(cache);
if (handle)
nl_handle_destroy(handle);
handle = NULL;
cache = NULL;
}
static int
swlib_priv_init(void)
{
handle = nl_handle_alloc();
if (!handle) {
DPRINTF("Failed to create handle\n");
goto err;
}
if (genl_connect(handle)) {
DPRINTF("Failed to connect to generic netlink\n");
goto err;
}
cache = genl_ctrl_alloc_cache(handle);
if (!cache) {
DPRINTF("Failed to allocate netlink cache\n");
goto err;
}
family = genl_ctrl_search_by_name(cache, "switch");
if (!family) {
DPRINTF("Switch API not present\n");
goto err;
}
return 0;
err:
swlib_priv_free();
return -EINVAL;
}
struct swlib_scan_arg {
const char *name;
struct switch_dev *head;
struct switch_dev *ptr;
};
static int
add_switch(struct nl_msg *msg, void *arg)
{
struct swlib_scan_arg *sa = arg;
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
struct switch_dev *dev;
const char *name;
if (nla_parse(tb, SWITCH_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL) < 0)
goto done;
if (!tb[SWITCH_ATTR_DEV_NAME])
goto done;
name = nla_get_string(tb[SWITCH_ATTR_DEV_NAME]);
if (sa->name && (strcmp(name, sa->name) != 0))
goto done;
dev = swlib_alloc(sizeof(struct switch_dev));
if (!dev)
goto done;
dev->dev_name = strdup(name);
if (tb[SWITCH_ATTR_ID])
dev->id = nla_get_u32(tb[SWITCH_ATTR_ID]);
if (tb[SWITCH_ATTR_NAME])
dev->name = strdup(nla_get_string(tb[SWITCH_ATTR_DEV_NAME]));
if (tb[SWITCH_ATTR_PORTS])
dev->ports = nla_get_u32(tb[SWITCH_ATTR_PORTS]);
if (tb[SWITCH_ATTR_VLANS])
dev->vlans = nla_get_u32(tb[SWITCH_ATTR_VLANS]);
if (!sa->head) {
sa->head = dev;
sa->ptr = dev;
} else {
sa->ptr->next = dev;
sa->ptr = dev;
}
refcount++;
done:
return NL_SKIP;
}
struct switch_dev *
swlib_connect(const char *name)
{
struct swlib_scan_arg arg;
int err;
if (!refcount) {
if (swlib_priv_init() < 0)
return NULL;
};
arg.head = NULL;
arg.ptr = NULL;
arg.name = name;
swlib_call(SWITCH_CMD_GET_SWITCH, add_switch, NULL, &arg);
if (!refcount)
swlib_priv_free();
return arg.head;
}
static void
swlib_free_attributes(struct switch_attr **head)
{
struct switch_attr *a = *head;
struct switch_attr *next;
while (a) {
next = a->next;
free(a);
a = next;
}
*head = NULL;
}
void
swlib_free(struct switch_dev *dev)
{
swlib_free_attributes(&dev->ops);
swlib_free_attributes(&dev->port_ops);
swlib_free_attributes(&dev->vlan_ops);
free(dev);
if (--refcount == 0)
swlib_priv_free();
}
void
swlib_free_all(struct switch_dev *dev)
{
struct switch_dev *p;
while (dev) {
p = dev->next;
swlib_free(dev);
dev = p;
}
}

213
package/swconfig/src/swlib.h Normal file
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@ -0,0 +1,213 @@
/*
* swlib.h: Switch configuration API (user space part)
*
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
Usage of the library functions:
The main datastructure for a switch is the struct switch_device
To get started, you first need to use switch_connect() to probe
for switches and allocate an instance of this struct.
There are two possible usage modes:
dev = switch_connect("eth0");
- this call will look for a switch registered for the linux device
"eth0" and only allocate a switch_device for this particular switch.
dev = switch_connect(NULL)
- this will return one switch_device struct for each available
switch. The switch_device structs are chained with by ->next pointer
Then to query a switch for all available attributes, use:
swlib_scan(dev);
All allocated datastructures for the switch_device struct can be freed with
swlib_free(dev);
or
swlib_free_all(dev);
The latter traverses a whole chain of switch_device structs and frees them all
Switch attributes (struct switch_attr) are divided into three groups:
dev->ops:
- global settings
dev->port_ops:
- per-port settings
dev->vlan_ops:
- per-vlan settings
switch_lookup_attr() is a small helper function to locate attributes
by name.
switch_set_attr() and switch_get_attr() can alter or request the values
of attributes.
Usage of the switch_attr struct:
->atype: attribute group, one of:
- SWLIB_ATTR_GROUP_GLOBAL
- SWLIB_ATTR_GROUP_VLAN
- SWLIB_ATTR_GROUP_PORT
->id: identifier for the attribute
->type: data type, one of:
- SWITCH_TYPE_INT
- SWITCH_TYPE_STRING
- SWITCH_TYPE_PORT
->name: short name of the attribute
->description: longer description
->next: pointer to the next attribute of the current group
Usage of the switch_val struct:
When setting attributes, following members of the struct switch_val need
to be set up:
->len (for attr->type == SWITCH_TYPE_PORT)
->port_vlan:
- port number (for attr->atype == SWLIB_ATTR_GROUP_PORT), or:
- vlan number (for attr->atype == SWLIB_ATTR_GROUP_VLAN)
->value.i (for attr->type == SWITCH_TYPE_INT)
->value.s (for attr->type == SWITCH_TYPE_STRING)
- owned by the caller, not stored in the library internally
->value.ports (for attr->type == SWITCH_TYPE_PORT)
- must point to an array of at lest val->len * sizeof(struct switch_port)
When getting string attributes, val->value.s must be freed by the caller
When getting port list attributes, an internal static buffer is used,
which changes from call to call.
*/
#ifndef __SWLIB_H
#define __SWLIB_H
enum swlib_attr_group {
SWLIB_ATTR_GROUP_GLOBAL,
SWLIB_ATTR_GROUP_VLAN,
SWLIB_ATTR_GROUP_PORT,
};
enum swlib_port_flags {
SWLIB_PORT_FLAG_TAGGED = (1 << 0),
};
struct switch_dev;
struct switch_attr;
struct switch_port;
struct switch_val;
struct switch_dev {
int id;
const char *name;
const char *dev_name;
int ports;
int vlans;
struct switch_attr *ops;
struct switch_attr *port_ops;
struct switch_attr *vlan_ops;
struct switch_dev *next;
void *priv;
};
struct switch_val {
struct switch_attr *attr;
int len;
int err;
int port_vlan;
union {
const char *s;
int i;
struct switch_port *ports;
} value;
};
struct switch_attr {
struct switch_dev *dev;
int atype;
int id;
int type;
const char *name;
const char *description;
struct switch_attr *next;
};
struct switch_port {
unsigned int id;
unsigned int flags;
};
/**
* swlib_connect: connect to the switch through netlink
* @name: name of the ethernet interface,
*
* if name is NULL, it connect and builds a chain of all switches
*/
struct switch_dev *swlib_connect(const char *name);
/**
* swlib_free: free all dynamically allocated data for the switch connection
* @dev: switch device struct
*
* all members of a switch device chain (generated by swlib_connect(NULL))
* must be freed individually
*/
void swlib_free(struct switch_dev *dev);
/**
* swlib_free_all: run swlib_free on all devices in the chain
* @dev: switch device struct
*/
void swlib_free_all(struct switch_dev *dev);
/**
* swlib_scan: probe the switch driver for available commands/attributes
* @dev: switch device struct
*/
int swlib_scan(struct switch_dev *dev);
/**
* swlib_lookup_attr: look up a switch attribute
* @dev: switch device struct
* @type: global, port or vlan
* @name: name of the attribute
*/
struct switch_attr *swlib_lookup_attr(struct switch_dev *dev,
enum swlib_attr_group atype, const char *name);
/**
* swlib_set_attr: set the value for an attribute
* @dev: switch device struct
* @attr: switch attribute struct
* @val: attribute value pointer
* returns 0 on success
*/
int swlib_set_attr(struct switch_dev *dev, struct switch_attr *attr,
struct switch_val *val);
/**
* swlib_get_attr: get the value for an attribute
* @dev: switch device struct
* @attr: switch attribute struct
* @val: attribute value pointer
* returns 0 on success
* for string attributes, the result string must be freed by the caller
*/
int swlib_get_attr(struct switch_dev *dev, struct switch_attr *attr,
struct switch_val *val);
#endif

1
target/linux/generic-2.6/config-2.6.26
View file

@ -1538,6 +1538,7 @@ CONFIG_SUNRPC_GSS=m
# CONFIG_SUN_PARTITION is not set
CONFIG_SUSPEND_UP_POSSIBLE=y
CONFIG_SWAP=y
# CONFIG_SWCONFIG is not set
# CONFIG_SYNCLINK_CS is not set
CONFIG_SYN_COOKIES=y
CONFIG_SYSCTL=y

1
target/linux/generic-2.6/config-2.6.27
View file

@ -1580,6 +1580,7 @@ CONFIG_SUNRPC_GSS=m
# CONFIG_SUN_PARTITION is not set
CONFIG_SUSPEND_UP_POSSIBLE=y
CONFIG_SWAP=y
# CONFIG_SWCONFIG is not set
# CONFIG_SYNCLINK_CS is not set
CONFIG_SYN_COOKIES=y
CONFIG_SYSCTL=y

872
target/linux/generic-2.6/files-2.6.26/drivers/net/phy/swconfig.c Normal file
View file

@ -0,0 +1,872 @@
/*
* swconfig.c: Switch configuration API
*
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/capability.h>
#include <linux/skbuff.h>
#include <linux/switch.h>
//#define DEBUG 1
#ifdef DEBUG
#define DPRINTF(format, ...) printk("%s: " format, __func__, ##__VA_ARGS__)
#else
#define DPRINTF(...) do {} while(0)
#endif
MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
MODULE_LICENSE("GPL");
static int swdev_id = 0;
static struct list_head swdevs;
static spinlock_t swdevs_lock = SPIN_LOCK_UNLOCKED;
struct swconfig_callback;
struct swconfig_callback
{
struct sk_buff *msg;
struct genlmsghdr *hdr;
struct genl_info *info;
int cmd;
/* callback for filling in the message data */
int (*fill)(struct swconfig_callback *cb, void *arg);
/* callback for closing the message before sending it */
int (*close)(struct swconfig_callback *cb, void *arg);
struct nlattr *nest[4];
int args[4];
};
/* defaults */
static int
swconfig_get_vlan_ports(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val)
{
int ret;
if (val->port_vlan >= dev->vlans)
return -EINVAL;
if (!dev->get_vlan_ports)
return -EOPNOTSUPP;
ret = dev->get_vlan_ports(dev, val);
printk("SET PORTS %d\n", val->len);
return ret;
}
static int
swconfig_set_vlan_ports(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val)
{
int i;
if (val->port_vlan >= dev->vlans)
return -EINVAL;
/* validate ports */
if (val->len > dev->ports)
return -EINVAL;
for (i = 0; i < val->len; i++) {
if (val->value.ports[i].id >= dev->ports)
return -EINVAL;
}
if (!dev->set_vlan_ports)
return -EOPNOTSUPP;
printk("SET PORTS %d\n", val->len);
return dev->set_vlan_ports(dev, val);
}
static int
swconfig_apply_config(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val)
{
/* don't complain if not supported by the switch driver */
if (!dev->apply_config)
return 0;
return dev->apply_config(dev);
}
enum global_defaults {
GLOBAL_APPLY,
};
enum vlan_defaults {
VLAN_PORTS,
};
enum port_defaults {
PORT_LINK,
};
static struct switch_attr default_global[] = {
[GLOBAL_APPLY] = {
.type = SWITCH_TYPE_NOVAL,
.name = "apply",
.description = "Activate changes in the hardware",
.set = swconfig_apply_config,
}
};
static struct switch_attr default_port[] = {
[PORT_LINK] = {
.type = SWITCH_TYPE_INT,
.name = "link",
.description = "Current link speed",
}
};
static struct switch_attr default_vlan[] = {
[VLAN_PORTS] = {
.type = SWITCH_TYPE_PORTS,
.name = "ports",
.description = "VLAN port mapping",
.set = swconfig_set_vlan_ports,
.get = swconfig_get_vlan_ports,
},
};
static void swconfig_defaults_init(struct switch_dev *dev)
{
dev->def_global = 0;
dev->def_vlan = 0;
dev->def_port = 0;
if (dev->get_vlan_ports || dev->set_vlan_ports)
set_bit(VLAN_PORTS, &dev->def_vlan);
/* always present, can be no-op */
set_bit(GLOBAL_APPLY, &dev->def_global);
}
static struct genl_family switch_fam = {
.id = GENL_ID_GENERATE,
.name = "switch",
.hdrsize = 0,
.version = 1,
.maxattr = SWITCH_ATTR_MAX,
};
static const struct nla_policy switch_policy[SWITCH_ATTR_MAX+1] = {
[SWITCH_ATTR_ID] = { .type = NLA_U32 },
[SWITCH_ATTR_OP_ID] = { .type = NLA_U32 },
[SWITCH_ATTR_OP_PORT] = { .type = NLA_U32 },
[SWITCH_ATTR_OP_VLAN] = { .type = NLA_U32 },
[SWITCH_ATTR_OP_VALUE_INT] = { .type = NLA_U32 },
[SWITCH_ATTR_OP_VALUE_STR] = { .type = NLA_NUL_STRING },
[SWITCH_ATTR_OP_VALUE_PORTS] = { .type = NLA_NESTED },
[SWITCH_ATTR_TYPE] = { .type = NLA_U32 },
};
static const struct nla_policy port_policy[SWITCH_PORT_ATTR_MAX+1] = {
[SWITCH_PORT_ID] = { .type = NLA_U32 },
[SWITCH_PORT_FLAG_TAGGED] = { .type = NLA_FLAG },
};
static inline void
swconfig_lock(void)
{
spin_lock(&swdevs_lock);
}
static inline void
swconfig_unlock(void)
{
spin_unlock(&swdevs_lock);
}
static struct switch_dev *
swconfig_get_dev(struct genl_info *info)
{
struct switch_dev *dev = NULL;
struct switch_dev *p;
int id;
if (!info->attrs[SWITCH_ATTR_ID])
goto done;
id = nla_get_u32(info->attrs[SWITCH_ATTR_ID]);
swconfig_lock();
list_for_each_entry(p, &swdevs, dev_list) {
if (id != p->id)
continue;
dev = p;
break;
}
if (dev)
spin_lock(&dev->lock);
else
DPRINTF("device %d not found\n", id);
swconfig_unlock();
done:
return dev;
}
static inline void
swconfig_put_dev(struct switch_dev *dev)
{
spin_unlock(&dev->lock);
}
static int
swconfig_dump_attr(struct swconfig_callback *cb, void *arg)
{
struct switch_attr *op = arg;
struct genl_info *info = cb->info;
struct sk_buff *msg = cb->msg;
int id = cb->args[0];
void *hdr;
hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq, &switch_fam,
NLM_F_MULTI, SWITCH_CMD_NEW_ATTR);
if (IS_ERR(hdr))
return -1;
NLA_PUT_U32(msg, SWITCH_ATTR_OP_ID, id);
NLA_PUT_U32(msg, SWITCH_ATTR_OP_TYPE, op->type);
NLA_PUT_STRING(msg, SWITCH_ATTR_OP_NAME, op->name);
if (op->description)
NLA_PUT_STRING(msg, SWITCH_ATTR_OP_DESCRIPTION,
op->description);
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
/* spread multipart messages across multiple message buffers */
static int
swconfig_send_multipart(struct swconfig_callback *cb, void *arg)
{
struct genl_info *info = cb->info;
int restart = 0;
int err;
do {
if (!cb->msg) {
cb->msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (cb->msg == NULL)
goto error;
}
if (!(cb->fill(cb, arg) < 0))
break;
/* fill failed, check if this was already the second attempt */
if (restart)
goto error;
/* try again in a new message, send the current one */
restart = 1;
if (cb->close) {
if (cb->close(cb, arg) < 0)
goto error;
}
err = genlmsg_unicast(cb->msg, info->snd_pid);
cb->msg = NULL;
if (err < 0)
goto error;
} while (restart);
return 0;
error:
if (cb->msg)
nlmsg_free(cb->msg);
return -1;
}
static int
swconfig_list_attrs(struct sk_buff *skb, struct genl_info *info)
{
struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
const struct switch_attrlist *alist;
struct switch_dev *dev;
struct swconfig_callback cb;
int err = -EINVAL;
int i;
/* defaults */
struct switch_attr *def_list;
unsigned long *def_active;
int n_def;
dev = swconfig_get_dev(info);
if (!dev)
return -EINVAL;
switch(hdr->cmd) {
case SWITCH_CMD_LIST_GLOBAL:
alist = &dev->attr_global;
def_list = default_global;
def_active = &dev->def_global;
n_def = ARRAY_SIZE(default_global);
break;
case SWITCH_CMD_LIST_VLAN:
alist = &dev->attr_vlan;
def_list = default_vlan;
def_active = &dev->def_vlan;
n_def = ARRAY_SIZE(default_vlan);
break;
case SWITCH_CMD_LIST_PORT:
alist = &dev->attr_port;
def_list = default_port;
def_active = &dev->def_port;
n_def = ARRAY_SIZE(default_port);
break;
default:
WARN_ON(1);
goto out;
}
memset(&cb, 0, sizeof(cb));
cb.info = info;
cb.fill = swconfig_dump_attr;
for (i = 0; i < alist->n_attr; i++) {
if (alist->attr[i].disabled)
continue;
cb.args[0] = i;
err = swconfig_send_multipart(&cb, &alist->attr[i]);
if (err < 0)
goto error;
}
/* defaults */
for (i = 0; i < n_def; i++) {
if (!test_bit(i, def_active))
continue;
cb.args[0] = SWITCH_ATTR_DEFAULTS_OFFSET + i;
err = swconfig_send_multipart(&cb, &def_list[i]);
if (err < 0)
goto error;
}
swconfig_put_dev(dev);
if (!cb.msg)
return 0;
return genlmsg_unicast(cb.msg, info->snd_pid);
error:
if (cb.msg)
nlmsg_free(cb.msg);
out:
swconfig_put_dev(dev);
return err;
}
static struct switch_attr *
swconfig_lookup_attr(struct switch_dev *dev, struct genl_info *info,
struct switch_val *val)
{
struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
const struct switch_attrlist *alist;
struct switch_attr *attr = NULL;
int attr_id;
/* defaults */
struct switch_attr *def_list;
unsigned long *def_active;
int n_def;
if (!info->attrs[SWITCH_ATTR_OP_ID])
goto done;
switch(hdr->cmd) {
case SWITCH_CMD_SET_GLOBAL:
case SWITCH_CMD_GET_GLOBAL:
alist = &dev->attr_global;
def_list = default_global;
def_active = &dev->def_global;
n_def = ARRAY_SIZE(default_global);
break;
case SWITCH_CMD_SET_VLAN:
case SWITCH_CMD_GET_VLAN:
alist = &dev->attr_vlan;
def_list = default_vlan;
def_active = &dev->def_vlan;
n_def = ARRAY_SIZE(default_vlan);
if (!info->attrs[SWITCH_ATTR_OP_VLAN])
goto done;
val->port_vlan = nla_get_u32(info->attrs[SWITCH_ATTR_OP_VLAN]);
break;
case SWITCH_CMD_SET_PORT:
case SWITCH_CMD_GET_PORT:
alist = &dev->attr_port;
def_list = default_port;
def_active = &dev->def_port;
n_def = ARRAY_SIZE(default_port);
if (!info->attrs[SWITCH_ATTR_OP_PORT])
goto done;
val->port_vlan = nla_get_u32(info->attrs[SWITCH_ATTR_OP_PORT]);
break;
default:
WARN_ON(1);
goto done;
}
if (!alist)
goto done;
attr_id = nla_get_u32(info->attrs[SWITCH_ATTR_OP_ID]);
if (attr_id >= SWITCH_ATTR_DEFAULTS_OFFSET) {
attr_id -= SWITCH_ATTR_DEFAULTS_OFFSET;
if (attr_id >= n_def)
goto done;
if (!test_bit(attr_id, def_active))
goto done;
attr = &def_list[attr_id];
} else {
if (attr_id >= alist->n_attr)
goto done;
attr = &alist->attr[attr_id];
}
if (attr->disabled)
attr = NULL;
done:
if (!attr)
DPRINTF("attribute lookup failed\n");
val->attr = attr;
return attr;
}
static int
swconfig_parse_ports(struct sk_buff *msg, struct nlattr *head,
struct switch_val *val, int max)
{
struct nlattr *nla;
int rem;
val->len = 0;
nla_for_each_nested(nla, head, rem) {
struct nlattr *tb[SWITCH_PORT_ATTR_MAX+1];
struct switch_port *port = &val->value.ports[val->len];
if (val->len >= max)
return -EINVAL;
if (nla_parse_nested(tb, SWITCH_PORT_ATTR_MAX, nla,
port_policy))
return -EINVAL;
if (!tb[SWITCH_PORT_ID])
return -EINVAL;
port->id = nla_get_u32(tb[SWITCH_PORT_ID]);
if (tb[SWITCH_PORT_FLAG_TAGGED])
port->flags |= (1 << SWITCH_PORT_FLAG_TAGGED);
val->len++;
}
return 0;
}
static int
swconfig_set_attr(struct sk_buff *skb, struct genl_info *info)
{
struct switch_attr *attr;
struct switch_dev *dev;
struct switch_val val;
int err = -EINVAL;
dev = swconfig_get_dev(info);
if (!dev)
return -EINVAL;
memset(&val, 0, sizeof(val));
attr = swconfig_lookup_attr(dev, info, &val);
if (!attr || !attr->set)
goto error;
val.attr = attr;
switch(attr->type) {
case SWITCH_TYPE_NOVAL:
break;
case SWITCH_TYPE_INT:
if (!info->attrs[SWITCH_ATTR_OP_VALUE_INT])
goto error;
val.value.i =
nla_get_u32(info->attrs[SWITCH_ATTR_OP_VALUE_INT]);
break;
case SWITCH_TYPE_STRING:
if (!info->attrs[SWITCH_ATTR_OP_VALUE_STR])
goto error;
val.value.s =
nla_data(info->attrs[SWITCH_ATTR_OP_VALUE_STR]);
break;
case SWITCH_TYPE_PORTS:
val.value.ports = dev->portbuf;
memset(dev->portbuf, 0,
sizeof(struct switch_port) * dev->ports);
/* TODO: implement multipart? */
if (info->attrs[SWITCH_ATTR_OP_VALUE_PORTS]) {
err = swconfig_parse_ports(skb,
info->attrs[SWITCH_ATTR_OP_VALUE_PORTS], &val, dev->ports);
if (err < 0)
goto error;
} else {
val.len = 0;
err = 0;
}
break;
default:
goto error;
}
err = attr->set(dev, attr, &val);
error:
swconfig_put_dev(dev);
return err;
}
static int
swconfig_close_portlist(struct swconfig_callback *cb, void *arg)
{
if (cb->nest[0])
nla_nest_end(cb->msg, cb->nest[0]);
return 0;
}
static int
swconfig_send_port(struct swconfig_callback *cb, void *arg)
{
const struct switch_port *port = arg;
struct nlattr *p = NULL;
if (!cb->nest[0]) {
cb->nest[0] = nla_nest_start(cb->msg, cb->cmd);
if (!cb->nest[0])
return -1;
}
p = nla_nest_start(cb->msg, SWITCH_ATTR_PORT);
if (!p)
goto error;
NLA_PUT_U32(cb->msg, SWITCH_PORT_ID, port->id);
if (port->flags & (1 << SWITCH_PORT_FLAG_TAGGED))
NLA_PUT_FLAG(cb->msg, SWITCH_PORT_FLAG_TAGGED);
nla_nest_end(cb->msg, p);
return 0;
nla_put_failure:
nla_nest_cancel(cb->msg, p);
error:
nla_nest_cancel(cb->msg, cb->nest[0]);
return -1;
}
static int
swconfig_send_ports(struct sk_buff **msg, struct genl_info *info, int attr,
const struct switch_val *val)
{
struct swconfig_callback cb;
int err = 0;
int i;
if (!val->value.ports)
return -EINVAL;
memset(&cb, 0, sizeof(cb));
cb.cmd = attr;
cb.msg = *msg;
cb.info = info;
cb.fill = swconfig_send_port;
cb.close = swconfig_close_portlist;
cb.nest[0] = nla_nest_start(cb.msg, cb.cmd);
for (i = 0; i < val->len; i++) {
err = swconfig_send_multipart(&cb, &val->value.ports[i]);
if (err)
goto done;
}
err = val->len;
swconfig_close_portlist(&cb, NULL);
*msg = cb.msg;
done:
return err;
}
static int
swconfig_get_attr(struct sk_buff *skb, struct genl_info *info)
{
struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
struct switch_attr *attr;
struct switch_dev *dev;
struct sk_buff *msg = NULL;
struct switch_val val;
int err = -EINVAL;
int cmd = hdr->cmd;
dev = swconfig_get_dev(info);
if (!dev)
return -EINVAL;
memset(&val, 0, sizeof(val));
attr = swconfig_lookup_attr(dev, info, &val);
if (!attr || !attr->get)
goto error_dev;
if (attr->type == SWITCH_TYPE_PORTS) {
val.value.ports = dev->portbuf;
memset(dev->portbuf, 0,
sizeof(struct switch_port) * dev->ports);
}
err = attr->get(dev, attr, &val);
if (err)
goto error;
msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (!msg)
goto error;
hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq, &switch_fam,
0, cmd);
if (IS_ERR(hdr))
goto nla_put_failure;
switch(attr->type) {
case SWITCH_TYPE_INT:
NLA_PUT_U32(msg, SWITCH_ATTR_OP_VALUE_INT, val.value.i);
break;
case SWITCH_TYPE_STRING:
NLA_PUT_STRING(msg, SWITCH_ATTR_OP_VALUE_STR, val.value.s);
break;
case SWITCH_TYPE_PORTS:
err = swconfig_send_ports(&msg, info,
SWITCH_ATTR_OP_VALUE_PORTS, &val);
if (err < 0)
goto nla_put_failure;
break;
default:
DPRINTF("invalid type in attribute\n");
err = -EINVAL;
goto error;
}
err = genlmsg_end(msg, hdr);
if (err < 0)
goto nla_put_failure;
swconfig_put_dev(dev);
return genlmsg_unicast(msg, info->snd_pid);
nla_put_failure:
if (msg)
nlmsg_free(msg);
error_dev:
swconfig_put_dev(dev);
error:
if (!err)
err = -ENOMEM;
return err;
}
static int
swconfig_send_switch(struct sk_buff *msg, u32 pid, u32 seq, int flags,
const struct switch_dev *dev)
{
void *hdr;
hdr = genlmsg_put(msg, pid, seq, &switch_fam, flags,
SWITCH_CMD_NEW_ATTR);
if (IS_ERR(hdr))
return -1;
NLA_PUT_U32(msg, SWITCH_ATTR_ID, dev->id);
NLA_PUT_STRING(msg, SWITCH_ATTR_NAME, dev->name);
NLA_PUT_STRING(msg, SWITCH_ATTR_DEV_NAME, dev->devname);
NLA_PUT_U32(msg, SWITCH_ATTR_VLANS, dev->vlans);
NLA_PUT_U32(msg, SWITCH_ATTR_PORTS, dev->ports);
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int swconfig_dump_switches(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct switch_dev *dev;
int start = cb->args[0];
int idx = 0;
swconfig_lock();
list_for_each_entry(dev, &swdevs, dev_list) {
if (++idx <= start)
continue;
if (swconfig_send_switch(skb, NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
dev) < 0)
break;
}
swconfig_unlock();
cb->args[0] = idx;
return skb->len;
}
static int
swconfig_done(struct netlink_callback *cb)
{
return 0;
}
static struct genl_ops swconfig_ops[] = {
{
.cmd = SWITCH_CMD_LIST_GLOBAL,
.doit = swconfig_list_attrs,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_LIST_VLAN,
.doit = swconfig_list_attrs,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_LIST_PORT,
.doit = swconfig_list_attrs,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_GET_GLOBAL,
.doit = swconfig_get_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_GET_VLAN,
.doit = swconfig_get_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_GET_PORT,
.doit = swconfig_get_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_SET_GLOBAL,
.doit = swconfig_set_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_SET_VLAN,
.doit = swconfig_set_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_SET_PORT,
.doit = swconfig_set_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_GET_SWITCH,
.dumpit = swconfig_dump_switches,
.policy = switch_policy,
.done = swconfig_done,
}
};
int
register_switch(struct switch_dev *dev, struct net_device *netdev)
{
INIT_LIST_HEAD(&dev->dev_list);
if (netdev) {
dev->netdev = netdev;
if (!dev->devname)
dev->devname = netdev->name;
}
BUG_ON(!dev->devname);
if (dev->ports > 0) {
dev->portbuf = kzalloc(sizeof(struct switch_port) * dev->ports,
GFP_KERNEL);
if (!dev->portbuf)
return -ENOMEM;
}
dev->id = ++swdev_id;
swconfig_defaults_init(dev);
spin_lock_init(&dev->lock);
swconfig_lock();
list_add(&dev->dev_list, &swdevs);
swconfig_unlock();
return 0;
}
EXPORT_SYMBOL_GPL(register_switch);
void
unregister_switch(struct switch_dev *dev)
{
kfree(dev->portbuf);
spin_lock(&dev->lock);
swconfig_lock();
list_del(&dev->dev_list);
swconfig_unlock();
}
EXPORT_SYMBOL_GPL(unregister_switch);
static int __init
swconfig_init(void)
{
int i, err;
INIT_LIST_HEAD(&swdevs);
err = genl_register_family(&switch_fam);
if (err)
return err;
for (i = 0; i < ARRAY_SIZE(swconfig_ops); i++) {
err = genl_register_ops(&switch_fam, &swconfig_ops[i]);
if (err)
goto unregister;
}
return 0;
unregister:
genl_unregister_family(&switch_fam);
return err;
}
static void __exit
swconfig_exit(void)
{
genl_unregister_family(&switch_fam);
}
module_init(swconfig_init);
module_exit(swconfig_exit);

168
target/linux/generic-2.6/files-2.6.26/include/linux/switch.h Normal file
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@ -0,0 +1,168 @@
/*
* switch.h: Switch configuration API
*
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __LINUX_SWITCH_H
#define __LINUX_SWITCH_H
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <linux/genetlink.h>
#ifndef __KERNEL__
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#else
#include <net/genetlink.h>
#endif
/* main attributes */
enum {
SWITCH_ATTR_UNSPEC,
/* global */
SWITCH_ATTR_TYPE,
/* device */
SWITCH_ATTR_ID,
SWITCH_ATTR_NAME,
SWITCH_ATTR_DEV_NAME,
SWITCH_ATTR_VLANS,
SWITCH_ATTR_PORTS,
/* attributes */
SWITCH_ATTR_OP_ID,
SWITCH_ATTR_OP_TYPE,
SWITCH_ATTR_OP_NAME,
SWITCH_ATTR_OP_PORT,
SWITCH_ATTR_OP_VLAN,
SWITCH_ATTR_OP_VALUE_INT,
SWITCH_ATTR_OP_VALUE_STR,
SWITCH_ATTR_OP_VALUE_PORTS,
SWITCH_ATTR_OP_DESCRIPTION,
/* port lists */
SWITCH_ATTR_PORT,
SWITCH_ATTR_MAX
};
/* commands */
enum {
SWITCH_CMD_UNSPEC,
SWITCH_CMD_GET_SWITCH,
SWITCH_CMD_NEW_ATTR,
SWITCH_CMD_LIST_GLOBAL,
SWITCH_CMD_GET_GLOBAL,
SWITCH_CMD_SET_GLOBAL,
SWITCH_CMD_LIST_PORT,
SWITCH_CMD_GET_PORT,
SWITCH_CMD_SET_PORT,
SWITCH_CMD_LIST_VLAN,
SWITCH_CMD_GET_VLAN,
SWITCH_CMD_SET_VLAN
};
/* data types */
enum switch_val_type {
SWITCH_TYPE_UNSPEC,
SWITCH_TYPE_INT,
SWITCH_TYPE_STRING,
SWITCH_TYPE_PORTS,
SWITCH_TYPE_NOVAL,
};
/* port nested attributes */
enum {
SWITCH_PORT_UNSPEC,
SWITCH_PORT_ID,
SWITCH_PORT_FLAG_TAGGED,
SWITCH_PORT_ATTR_MAX
};
#define SWITCH_ATTR_DEFAULTS_OFFSET 0x1000
#ifdef __KERNEL__
struct switch_dev;
struct switch_op;
struct switch_val;
struct switch_attr;
struct switch_attrlist;
int register_switch(struct switch_dev *dev, struct net_device *netdev);
void unregister_switch(struct switch_dev *dev);
struct switch_attrlist {
/* filled in by the driver */
int n_attr;
struct switch_attr *attr;
};
struct switch_dev {
int id;
void *priv;
const char *name;
/* NB: either devname or netdev must be set */
const char *devname;
struct net_device *netdev;
int ports;
int vlans;
int cpu_port;
struct switch_attrlist attr_global, attr_port, attr_vlan;
spinlock_t lock;
struct switch_port *portbuf;
struct list_head dev_list;
unsigned long def_global, def_port, def_vlan;
int (*get_vlan_ports)(struct switch_dev *dev, struct switch_val *val);
int (*set_vlan_ports)(struct switch_dev *dev, struct switch_val *val);
int (*apply_config)(struct switch_dev *dev);
};
struct switch_port {
u32 id;
u32 flags;
};
struct switch_val {
struct switch_attr *attr;
int port_vlan;
int len;
union {
const char *s;
u32 i;
struct switch_port *ports;
} value;
};
struct switch_attr {
int disabled;
int type;
const char *name;
const char *description;
int (*set)(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val);
int (*get)(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val);
/* for driver internal use */
int id;
int ofs;
int max;
};
#endif
#endif

872
target/linux/generic-2.6/files-2.6.27/drivers/net/phy/swconfig.c Normal file
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@ -0,0 +1,872 @@
/*
* swconfig.c: Switch configuration API
*
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/capability.h>
#include <linux/skbuff.h>
#include <linux/switch.h>
//#define DEBUG 1
#ifdef DEBUG
#define DPRINTF(format, ...) printk("%s: " format, __func__, ##__VA_ARGS__)
#else
#define DPRINTF(...) do {} while(0)
#endif
MODULE_AUTHOR("Felix Fietkau <nbd@openwrt.org>");
MODULE_LICENSE("GPL");
static int swdev_id = 0;
static struct list_head swdevs;
static spinlock_t swdevs_lock = SPIN_LOCK_UNLOCKED;
struct swconfig_callback;
struct swconfig_callback
{
struct sk_buff *msg;
struct genlmsghdr *hdr;
struct genl_info *info;
int cmd;
/* callback for filling in the message data */
int (*fill)(struct swconfig_callback *cb, void *arg);
/* callback for closing the message before sending it */
int (*close)(struct swconfig_callback *cb, void *arg);
struct nlattr *nest[4];
int args[4];
};
/* defaults */
static int
swconfig_get_vlan_ports(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val)
{
int ret;
if (val->port_vlan >= dev->vlans)
return -EINVAL;
if (!dev->get_vlan_ports)
return -EOPNOTSUPP;
ret = dev->get_vlan_ports(dev, val);
printk("SET PORTS %d\n", val->len);
return ret;
}
static int
swconfig_set_vlan_ports(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val)
{
int i;
if (val->port_vlan >= dev->vlans)
return -EINVAL;
/* validate ports */
if (val->len > dev->ports)
return -EINVAL;
for (i = 0; i < val->len; i++) {
if (val->value.ports[i].id >= dev->ports)
return -EINVAL;
}
if (!dev->set_vlan_ports)
return -EOPNOTSUPP;
printk("SET PORTS %d\n", val->len);
return dev->set_vlan_ports(dev, val);
}
static int
swconfig_apply_config(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val)
{
/* don't complain if not supported by the switch driver */
if (!dev->apply_config)
return 0;
return dev->apply_config(dev);
}
enum global_defaults {
GLOBAL_APPLY,
};
enum vlan_defaults {
VLAN_PORTS,
};
enum port_defaults {
PORT_LINK,
};
static struct switch_attr default_global[] = {
[GLOBAL_APPLY] = {
.type = SWITCH_TYPE_NOVAL,
.name = "apply",
.description = "Activate changes in the hardware",
.set = swconfig_apply_config,
}
};
static struct switch_attr default_port[] = {
[PORT_LINK] = {
.type = SWITCH_TYPE_INT,
.name = "link",
.description = "Current link speed",
}
};
static struct switch_attr default_vlan[] = {
[VLAN_PORTS] = {
.type = SWITCH_TYPE_PORTS,
.name = "ports",
.description = "VLAN port mapping",
.set = swconfig_set_vlan_ports,
.get = swconfig_get_vlan_ports,
},
};
static void swconfig_defaults_init(struct switch_dev *dev)
{
dev->def_global = 0;
dev->def_vlan = 0;
dev->def_port = 0;
if (dev->get_vlan_ports || dev->set_vlan_ports)
set_bit(VLAN_PORTS, &dev->def_vlan);
/* always present, can be no-op */
set_bit(GLOBAL_APPLY, &dev->def_global);
}
static struct genl_family switch_fam = {
.id = GENL_ID_GENERATE,
.name = "switch",
.hdrsize = 0,
.version = 1,
.maxattr = SWITCH_ATTR_MAX,
};
static const struct nla_policy switch_policy[SWITCH_ATTR_MAX+1] = {
[SWITCH_ATTR_ID] = { .type = NLA_U32 },
[SWITCH_ATTR_OP_ID] = { .type = NLA_U32 },
[SWITCH_ATTR_OP_PORT] = { .type = NLA_U32 },
[SWITCH_ATTR_OP_VLAN] = { .type = NLA_U32 },
[SWITCH_ATTR_OP_VALUE_INT] = { .type = NLA_U32 },
[SWITCH_ATTR_OP_VALUE_STR] = { .type = NLA_NUL_STRING },
[SWITCH_ATTR_OP_VALUE_PORTS] = { .type = NLA_NESTED },
[SWITCH_ATTR_TYPE] = { .type = NLA_U32 },
};
static const struct nla_policy port_policy[SWITCH_PORT_ATTR_MAX+1] = {
[SWITCH_PORT_ID] = { .type = NLA_U32 },
[SWITCH_PORT_FLAG_TAGGED] = { .type = NLA_FLAG },
};
static inline void
swconfig_lock(void)
{
spin_lock(&swdevs_lock);
}
static inline void
swconfig_unlock(void)
{
spin_unlock(&swdevs_lock);
}
static struct switch_dev *
swconfig_get_dev(struct genl_info *info)
{
struct switch_dev *dev = NULL;
struct switch_dev *p;
int id;
if (!info->attrs[SWITCH_ATTR_ID])
goto done;
id = nla_get_u32(info->attrs[SWITCH_ATTR_ID]);
swconfig_lock();
list_for_each_entry(p, &swdevs, dev_list) {
if (id != p->id)
continue;
dev = p;
break;
}
if (dev)
spin_lock(&dev->lock);
else
DPRINTF("device %d not found\n", id);
swconfig_unlock();
done:
return dev;
}
static inline void
swconfig_put_dev(struct switch_dev *dev)
{
spin_unlock(&dev->lock);
}
static int
swconfig_dump_attr(struct swconfig_callback *cb, void *arg)
{
struct switch_attr *op = arg;
struct genl_info *info = cb->info;
struct sk_buff *msg = cb->msg;
int id = cb->args[0];
void *hdr;
hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq, &switch_fam,
NLM_F_MULTI, SWITCH_CMD_NEW_ATTR);
if (IS_ERR(hdr))
return -1;
NLA_PUT_U32(msg, SWITCH_ATTR_OP_ID, id);
NLA_PUT_U32(msg, SWITCH_ATTR_OP_TYPE, op->type);
NLA_PUT_STRING(msg, SWITCH_ATTR_OP_NAME, op->name);
if (op->description)
NLA_PUT_STRING(msg, SWITCH_ATTR_OP_DESCRIPTION,
op->description);
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
/* spread multipart messages across multiple message buffers */
static int
swconfig_send_multipart(struct swconfig_callback *cb, void *arg)
{
struct genl_info *info = cb->info;
int restart = 0;
int err;
do {
if (!cb->msg) {
cb->msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (cb->msg == NULL)
goto error;
}
if (!(cb->fill(cb, arg) < 0))
break;
/* fill failed, check if this was already the second attempt */
if (restart)
goto error;
/* try again in a new message, send the current one */
restart = 1;
if (cb->close) {
if (cb->close(cb, arg) < 0)
goto error;
}
err = genlmsg_unicast(cb->msg, info->snd_pid);
cb->msg = NULL;
if (err < 0)
goto error;
} while (restart);
return 0;
error:
if (cb->msg)
nlmsg_free(cb->msg);
return -1;
}
static int
swconfig_list_attrs(struct sk_buff *skb, struct genl_info *info)
{
struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
const struct switch_attrlist *alist;
struct switch_dev *dev;
struct swconfig_callback cb;
int err = -EINVAL;
int i;
/* defaults */
struct switch_attr *def_list;
unsigned long *def_active;
int n_def;
dev = swconfig_get_dev(info);
if (!dev)
return -EINVAL;
switch(hdr->cmd) {
case SWITCH_CMD_LIST_GLOBAL:
alist = &dev->attr_global;
def_list = default_global;
def_active = &dev->def_global;
n_def = ARRAY_SIZE(default_global);
break;
case SWITCH_CMD_LIST_VLAN:
alist = &dev->attr_vlan;
def_list = default_vlan;
def_active = &dev->def_vlan;
n_def = ARRAY_SIZE(default_vlan);
break;
case SWITCH_CMD_LIST_PORT:
alist = &dev->attr_port;
def_list = default_port;
def_active = &dev->def_port;
n_def = ARRAY_SIZE(default_port);
break;
default:
WARN_ON(1);
goto out;
}
memset(&cb, 0, sizeof(cb));
cb.info = info;
cb.fill = swconfig_dump_attr;
for (i = 0; i < alist->n_attr; i++) {
if (alist->attr[i].disabled)
continue;
cb.args[0] = i;
err = swconfig_send_multipart(&cb, &alist->attr[i]);
if (err < 0)
goto error;
}
/* defaults */
for (i = 0; i < n_def; i++) {
if (!test_bit(i, def_active))
continue;
cb.args[0] = SWITCH_ATTR_DEFAULTS_OFFSET + i;
err = swconfig_send_multipart(&cb, &def_list[i]);
if (err < 0)
goto error;
}
swconfig_put_dev(dev);
if (!cb.msg)
return 0;
return genlmsg_unicast(cb.msg, info->snd_pid);
error:
if (cb.msg)
nlmsg_free(cb.msg);
out:
swconfig_put_dev(dev);
return err;
}
static struct switch_attr *
swconfig_lookup_attr(struct switch_dev *dev, struct genl_info *info,
struct switch_val *val)
{
struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
const struct switch_attrlist *alist;
struct switch_attr *attr = NULL;
int attr_id;
/* defaults */
struct switch_attr *def_list;
unsigned long *def_active;
int n_def;
if (!info->attrs[SWITCH_ATTR_OP_ID])
goto done;
switch(hdr->cmd) {
case SWITCH_CMD_SET_GLOBAL:
case SWITCH_CMD_GET_GLOBAL:
alist = &dev->attr_global;
def_list = default_global;
def_active = &dev->def_global;
n_def = ARRAY_SIZE(default_global);
break;
case SWITCH_CMD_SET_VLAN:
case SWITCH_CMD_GET_VLAN:
alist = &dev->attr_vlan;
def_list = default_vlan;
def_active = &dev->def_vlan;
n_def = ARRAY_SIZE(default_vlan);
if (!info->attrs[SWITCH_ATTR_OP_VLAN])
goto done;
val->port_vlan = nla_get_u32(info->attrs[SWITCH_ATTR_OP_VLAN]);
break;
case SWITCH_CMD_SET_PORT:
case SWITCH_CMD_GET_PORT:
alist = &dev->attr_port;
def_list = default_port;
def_active = &dev->def_port;
n_def = ARRAY_SIZE(default_port);
if (!info->attrs[SWITCH_ATTR_OP_PORT])
goto done;
val->port_vlan = nla_get_u32(info->attrs[SWITCH_ATTR_OP_PORT]);
break;
default:
WARN_ON(1);
goto done;
}
if (!alist)
goto done;
attr_id = nla_get_u32(info->attrs[SWITCH_ATTR_OP_ID]);
if (attr_id >= SWITCH_ATTR_DEFAULTS_OFFSET) {
attr_id -= SWITCH_ATTR_DEFAULTS_OFFSET;
if (attr_id >= n_def)
goto done;
if (!test_bit(attr_id, def_active))
goto done;
attr = &def_list[attr_id];
} else {
if (attr_id >= alist->n_attr)
goto done;
attr = &alist->attr[attr_id];
}
if (attr->disabled)
attr = NULL;
done:
if (!attr)
DPRINTF("attribute lookup failed\n");
val->attr = attr;
return attr;
}
static int
swconfig_parse_ports(struct sk_buff *msg, struct nlattr *head,
struct switch_val *val, int max)
{
struct nlattr *nla;
int rem;
val->len = 0;
nla_for_each_nested(nla, head, rem) {
struct nlattr *tb[SWITCH_PORT_ATTR_MAX+1];
struct switch_port *port = &val->value.ports[val->len];
if (val->len >= max)
return -EINVAL;
if (nla_parse_nested(tb, SWITCH_PORT_ATTR_MAX, nla,
port_policy))
return -EINVAL;
if (!tb[SWITCH_PORT_ID])
return -EINVAL;
port->id = nla_get_u32(tb[SWITCH_PORT_ID]);
if (tb[SWITCH_PORT_FLAG_TAGGED])
port->flags |= (1 << SWITCH_PORT_FLAG_TAGGED);
val->len++;
}
return 0;
}
static int
swconfig_set_attr(struct sk_buff *skb, struct genl_info *info)
{
struct switch_attr *attr;
struct switch_dev *dev;
struct switch_val val;
int err = -EINVAL;
dev = swconfig_get_dev(info);
if (!dev)
return -EINVAL;
memset(&val, 0, sizeof(val));
attr = swconfig_lookup_attr(dev, info, &val);
if (!attr || !attr->set)
goto error;
val.attr = attr;
switch(attr->type) {
case SWITCH_TYPE_NOVAL:
break;
case SWITCH_TYPE_INT:
if (!info->attrs[SWITCH_ATTR_OP_VALUE_INT])
goto error;
val.value.i =
nla_get_u32(info->attrs[SWITCH_ATTR_OP_VALUE_INT]);
break;
case SWITCH_TYPE_STRING:
if (!info->attrs[SWITCH_ATTR_OP_VALUE_STR])
goto error;
val.value.s =
nla_data(info->attrs[SWITCH_ATTR_OP_VALUE_STR]);
break;
case SWITCH_TYPE_PORTS:
val.value.ports = dev->portbuf;
memset(dev->portbuf, 0,
sizeof(struct switch_port) * dev->ports);
/* TODO: implement multipart? */
if (info->attrs[SWITCH_ATTR_OP_VALUE_PORTS]) {
err = swconfig_parse_ports(skb,
info->attrs[SWITCH_ATTR_OP_VALUE_PORTS], &val, dev->ports);
if (err < 0)
goto error;
} else {
val.len = 0;
err = 0;
}
break;
default:
goto error;
}
err = attr->set(dev, attr, &val);
error:
swconfig_put_dev(dev);
return err;
}
static int
swconfig_close_portlist(struct swconfig_callback *cb, void *arg)
{
if (cb->nest[0])
nla_nest_end(cb->msg, cb->nest[0]);
return 0;
}
static int
swconfig_send_port(struct swconfig_callback *cb, void *arg)
{
const struct switch_port *port = arg;
struct nlattr *p = NULL;
if (!cb->nest[0]) {
cb->nest[0] = nla_nest_start(cb->msg, cb->cmd);
if (!cb->nest[0])
return -1;
}
p = nla_nest_start(cb->msg, SWITCH_ATTR_PORT);
if (!p)
goto error;
NLA_PUT_U32(cb->msg, SWITCH_PORT_ID, port->id);
if (port->flags & (1 << SWITCH_PORT_FLAG_TAGGED))
NLA_PUT_FLAG(cb->msg, SWITCH_PORT_FLAG_TAGGED);
nla_nest_end(cb->msg, p);
return 0;
nla_put_failure:
nla_nest_cancel(cb->msg, p);
error:
nla_nest_cancel(cb->msg, cb->nest[0]);
return -1;
}
static int
swconfig_send_ports(struct sk_buff **msg, struct genl_info *info, int attr,
const struct switch_val *val)
{
struct swconfig_callback cb;
int err = 0;
int i;
if (!val->value.ports)
return -EINVAL;
memset(&cb, 0, sizeof(cb));
cb.cmd = attr;
cb.msg = *msg;
cb.info = info;
cb.fill = swconfig_send_port;
cb.close = swconfig_close_portlist;
cb.nest[0] = nla_nest_start(cb.msg, cb.cmd);
for (i = 0; i < val->len; i++) {
err = swconfig_send_multipart(&cb, &val->value.ports[i]);
if (err)
goto done;
}
err = val->len;
swconfig_close_portlist(&cb, NULL);
*msg = cb.msg;
done:
return err;
}
static int
swconfig_get_attr(struct sk_buff *skb, struct genl_info *info)
{
struct genlmsghdr *hdr = nlmsg_data(info->nlhdr);
struct switch_attr *attr;
struct switch_dev *dev;
struct sk_buff *msg = NULL;
struct switch_val val;
int err = -EINVAL;
int cmd = hdr->cmd;
dev = swconfig_get_dev(info);
if (!dev)
return -EINVAL;
memset(&val, 0, sizeof(val));
attr = swconfig_lookup_attr(dev, info, &val);
if (!attr || !attr->get)
goto error_dev;
if (attr->type == SWITCH_TYPE_PORTS) {
val.value.ports = dev->portbuf;
memset(dev->portbuf, 0,
sizeof(struct switch_port) * dev->ports);
}
err = attr->get(dev, attr, &val);
if (err)
goto error;
msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (!msg)
goto error;
hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq, &switch_fam,
0, cmd);
if (IS_ERR(hdr))
goto nla_put_failure;
switch(attr->type) {
case SWITCH_TYPE_INT:
NLA_PUT_U32(msg, SWITCH_ATTR_OP_VALUE_INT, val.value.i);
break;
case SWITCH_TYPE_STRING:
NLA_PUT_STRING(msg, SWITCH_ATTR_OP_VALUE_STR, val.value.s);
break;
case SWITCH_TYPE_PORTS:
err = swconfig_send_ports(&msg, info,
SWITCH_ATTR_OP_VALUE_PORTS, &val);
if (err < 0)
goto nla_put_failure;
break;
default:
DPRINTF("invalid type in attribute\n");
err = -EINVAL;
goto error;
}
err = genlmsg_end(msg, hdr);
if (err < 0)
goto nla_put_failure;
swconfig_put_dev(dev);
return genlmsg_unicast(msg, info->snd_pid);
nla_put_failure:
if (msg)
nlmsg_free(msg);
error_dev:
swconfig_put_dev(dev);
error:
if (!err)
err = -ENOMEM;
return err;
}
static int
swconfig_send_switch(struct sk_buff *msg, u32 pid, u32 seq, int flags,
const struct switch_dev *dev)
{
void *hdr;
hdr = genlmsg_put(msg, pid, seq, &switch_fam, flags,
SWITCH_CMD_NEW_ATTR);
if (IS_ERR(hdr))
return -1;
NLA_PUT_U32(msg, SWITCH_ATTR_ID, dev->id);
NLA_PUT_STRING(msg, SWITCH_ATTR_NAME, dev->name);
NLA_PUT_STRING(msg, SWITCH_ATTR_DEV_NAME, dev->devname);
NLA_PUT_U32(msg, SWITCH_ATTR_VLANS, dev->vlans);
NLA_PUT_U32(msg, SWITCH_ATTR_PORTS, dev->ports);
return genlmsg_end(msg, hdr);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int swconfig_dump_switches(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct switch_dev *dev;
int start = cb->args[0];
int idx = 0;
swconfig_lock();
list_for_each_entry(dev, &swdevs, dev_list) {
if (++idx <= start)
continue;
if (swconfig_send_switch(skb, NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
dev) < 0)
break;
}
swconfig_unlock();
cb->args[0] = idx;
return skb->len;
}
static int
swconfig_done(struct netlink_callback *cb)
{
return 0;
}
static struct genl_ops swconfig_ops[] = {
{
.cmd = SWITCH_CMD_LIST_GLOBAL,
.doit = swconfig_list_attrs,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_LIST_VLAN,
.doit = swconfig_list_attrs,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_LIST_PORT,
.doit = swconfig_list_attrs,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_GET_GLOBAL,
.doit = swconfig_get_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_GET_VLAN,
.doit = swconfig_get_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_GET_PORT,
.doit = swconfig_get_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_SET_GLOBAL,
.doit = swconfig_set_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_SET_VLAN,
.doit = swconfig_set_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_SET_PORT,
.doit = swconfig_set_attr,
.policy = switch_policy,
},
{
.cmd = SWITCH_CMD_GET_SWITCH,
.dumpit = swconfig_dump_switches,
.policy = switch_policy,
.done = swconfig_done,
}
};
int
register_switch(struct switch_dev *dev, struct net_device *netdev)
{
INIT_LIST_HEAD(&dev->dev_list);
if (netdev) {
dev->netdev = netdev;
if (!dev->devname)
dev->devname = netdev->name;
}
BUG_ON(!dev->devname);
if (dev->ports > 0) {
dev->portbuf = kzalloc(sizeof(struct switch_port) * dev->ports,
GFP_KERNEL);
if (!dev->portbuf)
return -ENOMEM;
}
dev->id = ++swdev_id;
swconfig_defaults_init(dev);
spin_lock_init(&dev->lock);
swconfig_lock();
list_add(&dev->dev_list, &swdevs);
swconfig_unlock();
return 0;
}
EXPORT_SYMBOL_GPL(register_switch);
void
unregister_switch(struct switch_dev *dev)
{
kfree(dev->portbuf);
spin_lock(&dev->lock);
swconfig_lock();
list_del(&dev->dev_list);
swconfig_unlock();
}
EXPORT_SYMBOL_GPL(unregister_switch);
static int __init
swconfig_init(void)
{
int i, err;
INIT_LIST_HEAD(&swdevs);
err = genl_register_family(&switch_fam);
if (err)
return err;
for (i = 0; i < ARRAY_SIZE(swconfig_ops); i++) {
err = genl_register_ops(&switch_fam, &swconfig_ops[i]);
if (err)
goto unregister;
}
return 0;
unregister:
genl_unregister_family(&switch_fam);
return err;
}
static void __exit
swconfig_exit(void)
{
genl_unregister_family(&switch_fam);
}
module_init(swconfig_init);
module_exit(swconfig_exit);

168
target/linux/generic-2.6/files-2.6.27/include/linux/switch.h Normal file
View file

@ -0,0 +1,168 @@
/*
* switch.h: Switch configuration API
*
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __LINUX_SWITCH_H
#define __LINUX_SWITCH_H
#include <linux/types.h>
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <linux/genetlink.h>
#ifndef __KERNEL__
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#else
#include <net/genetlink.h>
#endif
/* main attributes */
enum {
SWITCH_ATTR_UNSPEC,
/* global */
SWITCH_ATTR_TYPE,
/* device */
SWITCH_ATTR_ID,
SWITCH_ATTR_NAME,
SWITCH_ATTR_DEV_NAME,
SWITCH_ATTR_VLANS,
SWITCH_ATTR_PORTS,
/* attributes */
SWITCH_ATTR_OP_ID,
SWITCH_ATTR_OP_TYPE,
SWITCH_ATTR_OP_NAME,
SWITCH_ATTR_OP_PORT,
SWITCH_ATTR_OP_VLAN,
SWITCH_ATTR_OP_VALUE_INT,
SWITCH_ATTR_OP_VALUE_STR,
SWITCH_ATTR_OP_VALUE_PORTS,
SWITCH_ATTR_OP_DESCRIPTION,
/* port lists */
SWITCH_ATTR_PORT,
SWITCH_ATTR_MAX
};
/* commands */
enum {
SWITCH_CMD_UNSPEC,
SWITCH_CMD_GET_SWITCH,
SWITCH_CMD_NEW_ATTR,
SWITCH_CMD_LIST_GLOBAL,
SWITCH_CMD_GET_GLOBAL,
SWITCH_CMD_SET_GLOBAL,
SWITCH_CMD_LIST_PORT,
SWITCH_CMD_GET_PORT,
SWITCH_CMD_SET_PORT,
SWITCH_CMD_LIST_VLAN,
SWITCH_CMD_GET_VLAN,
SWITCH_CMD_SET_VLAN
};
/* data types */
enum switch_val_type {
SWITCH_TYPE_UNSPEC,
SWITCH_TYPE_INT,
SWITCH_TYPE_STRING,
SWITCH_TYPE_PORTS,
SWITCH_TYPE_NOVAL,
};
/* port nested attributes */
enum {
SWITCH_PORT_UNSPEC,
SWITCH_PORT_ID,
SWITCH_PORT_FLAG_TAGGED,
SWITCH_PORT_ATTR_MAX
};
#define SWITCH_ATTR_DEFAULTS_OFFSET 0x1000
#ifdef __KERNEL__
struct switch_dev;
struct switch_op;
struct switch_val;
struct switch_attr;
struct switch_attrlist;
int register_switch(struct switch_dev *dev, struct net_device *netdev);
void unregister_switch(struct switch_dev *dev);
struct switch_attrlist {
/* filled in by the driver */
int n_attr;
struct switch_attr *attr;
};
struct switch_dev {
int id;
void *priv;
const char *name;
/* NB: either devname or netdev must be set */
const char *devname;
struct net_device *netdev;
int ports;
int vlans;
int cpu_port;
struct switch_attrlist attr_global, attr_port, attr_vlan;
spinlock_t lock;
struct switch_port *portbuf;
struct list_head dev_list;
unsigned long def_global, def_port, def_vlan;
int (*get_vlan_ports)(struct switch_dev *dev, struct switch_val *val);
int (*set_vlan_ports)(struct switch_dev *dev, struct switch_val *val);
int (*apply_config)(struct switch_dev *dev);
};
struct switch_port {
u32 id;
u32 flags;
};
struct switch_val {
struct switch_attr *attr;
int port_vlan;
int len;
union {
const char *s;
u32 i;
struct switch_port *ports;
} value;
};
struct switch_attr {
int disabled;
int type;
const char *name;
const char *description;
int (*set)(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val);
int (*get)(struct switch_dev *dev, struct switch_attr *attr, struct switch_val *val);
/* for driver internal use */
int id;
int ofs;
int max;
};
#endif
#endif

25
target/linux/generic-2.6/patches-2.6.26/650-swconfig.patch Normal file
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@ -0,0 +1,25 @@
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -13,6 +13,12 @@ menuconfig PHYLIB
if PHYLIB
+config SWCONFIG
+ tristate "Switch configuration API"
+ ---help---
+ Switch configuration API using netlink. This allows
+ you to configure the VLAN features of certain switches.
+
comment "MII PHY device drivers"
config MARVELL_PHY
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -3,6 +3,7 @@
libphy-objs := phy.o phy_device.o mdio_bus.o
obj-$(CONFIG_PHYLIB) += libphy.o
+obj-$(CONFIG_SWCONFIG) += swconfig.o
obj-$(CONFIG_MARVELL_PHY) += marvell.o
obj-$(CONFIG_DAVICOM_PHY) += davicom.o
obj-$(CONFIG_CICADA_PHY) += cicada.o

25
target/linux/generic-2.6/patches-2.6.27/650-swconfig.patch Normal file
View file

@ -0,0 +1,25 @@
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -13,6 +13,12 @@ menuconfig PHYLIB
if PHYLIB
+config SWCONFIG
+ tristate "Switch configuration API"
+ ---help---
+ Switch configuration API using netlink. This allows
+ you to configure the VLAN features of certain switches.
+
comment "MII PHY device drivers"
config MARVELL_PHY
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -3,6 +3,7 @@
libphy-objs := phy.o phy_device.o mdio_bus.o
obj-$(CONFIG_PHYLIB) += libphy.o
+obj-$(CONFIG_SWCONFIG) += swconfig.o
obj-$(CONFIG_MARVELL_PHY) += marvell.o
obj-$(CONFIG_DAVICOM_PHY) += davicom.o
obj-$(CONFIG_CICADA_PHY) += cicada.o