#include <linux/workqueue.h>
#include <linux/if_vlan.h>
#include <linux/rtnetlink.h>
-#include <net/ip_fib.h>
#include <net/switchdev.h>
/**
switch (obj->id) {
case SWITCHDEV_OBJ_ID_PORT_VLAN:
return sizeof(struct switchdev_obj_port_vlan);
- case SWITCHDEV_OBJ_ID_IPV4_FIB:
- return sizeof(struct switchdev_obj_ipv4_fib);
case SWITCHDEV_OBJ_ID_PORT_FDB:
return sizeof(struct switchdev_obj_port_fdb);
case SWITCHDEV_OBJ_ID_PORT_MDB:
}
EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump);
-static struct net_device *switchdev_get_lowest_dev(struct net_device *dev)
-{
- const struct switchdev_ops *ops = dev->switchdev_ops;
- struct net_device *lower_dev;
- struct net_device *port_dev;
- struct list_head *iter;
-
- /* Recusively search down until we find a sw port dev.
- * (A sw port dev supports switchdev_port_attr_get).
- */
-
- if (ops && ops->switchdev_port_attr_get)
- return dev;
-
- netdev_for_each_lower_dev(dev, lower_dev, iter) {
- port_dev = switchdev_get_lowest_dev(lower_dev);
- if (port_dev)
- return port_dev;
- }
-
- return NULL;
-}
-
-static struct net_device *switchdev_get_dev_by_nhs(struct fib_info *fi)
-{
- struct switchdev_attr attr = {
- .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
- };
- struct switchdev_attr prev_attr;
- struct net_device *dev = NULL;
- int nhsel;
-
- ASSERT_RTNL();
-
- /* For this route, all nexthop devs must be on the same switch. */
-
- for (nhsel = 0; nhsel < fi->fib_nhs; nhsel++) {
- const struct fib_nh *nh = &fi->fib_nh[nhsel];
-
- if (!nh->nh_dev)
- return NULL;
-
- dev = switchdev_get_lowest_dev(nh->nh_dev);
- if (!dev)
- return NULL;
-
- attr.orig_dev = dev;
- if (switchdev_port_attr_get(dev, &attr))
- return NULL;
-
- if (nhsel > 0 &&
- !netdev_phys_item_id_same(&prev_attr.u.ppid, &attr.u.ppid))
- return NULL;
-
- prev_attr = attr;
- }
-
- return dev;
-}
-
-/**
- * switchdev_fib_ipv4_add - Add/modify switch IPv4 route entry
- *
- * @dst: route's IPv4 destination address
- * @dst_len: destination address length (prefix length)
- * @fi: route FIB info structure
- * @tos: route TOS
- * @type: route type
- * @nlflags: netlink flags passed in (NLM_F_*)
- * @tb_id: route table ID
- *
- * Add/modify switch IPv4 route entry.
- */
-int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
- u8 tos, u8 type, u32 nlflags, u32 tb_id)
-{
- struct switchdev_obj_ipv4_fib ipv4_fib = {
- .obj.id = SWITCHDEV_OBJ_ID_IPV4_FIB,
- .dst = dst,
- .dst_len = dst_len,
- .fi = fi,
- .tos = tos,
- .type = type,
- .nlflags = nlflags,
- .tb_id = tb_id,
- };
- struct net_device *dev;
- int err = 0;
-
- /* Don't offload route if using custom ip rules or if
- * IPv4 FIB offloading has been disabled completely.
- */
-
-#ifdef CONFIG_IP_MULTIPLE_TABLES
- if (fi->fib_net->ipv4.fib_has_custom_rules)
- return 0;
-#endif
-
- if (fi->fib_net->ipv4.fib_offload_disabled)
- return 0;
-
- dev = switchdev_get_dev_by_nhs(fi);
- if (!dev)
- return 0;
-
- ipv4_fib.obj.orig_dev = dev;
- err = switchdev_port_obj_add(dev, &ipv4_fib.obj);
- if (!err)
- fi->fib_flags |= RTNH_F_OFFLOAD;
-
- return err == -EOPNOTSUPP ? 0 : err;
-}
-EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_add);
-
-/**
- * switchdev_fib_ipv4_del - Delete IPv4 route entry from switch
- *
- * @dst: route's IPv4 destination address
- * @dst_len: destination address length (prefix length)
- * @fi: route FIB info structure
- * @tos: route TOS
- * @type: route type
- * @tb_id: route table ID
- *
- * Delete IPv4 route entry from switch device.
- */
-int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
- u8 tos, u8 type, u32 tb_id)
-{
- struct switchdev_obj_ipv4_fib ipv4_fib = {
- .obj.id = SWITCHDEV_OBJ_ID_IPV4_FIB,
- .dst = dst,
- .dst_len = dst_len,
- .fi = fi,
- .tos = tos,
- .type = type,
- .nlflags = 0,
- .tb_id = tb_id,
- };
- struct net_device *dev;
- int err = 0;
-
- if (!(fi->fib_flags & RTNH_F_OFFLOAD))
- return 0;
-
- dev = switchdev_get_dev_by_nhs(fi);
- if (!dev)
- return 0;
-
- ipv4_fib.obj.orig_dev = dev;
- err = switchdev_port_obj_del(dev, &ipv4_fib.obj);
- if (!err)
- fi->fib_flags &= ~RTNH_F_OFFLOAD;
-
- return err == -EOPNOTSUPP ? 0 : err;
-}
-EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_del);
-
-/**
- * switchdev_fib_ipv4_abort - Abort an IPv4 FIB operation
- *
- * @fi: route FIB info structure
- */
-void switchdev_fib_ipv4_abort(struct fib_info *fi)
-{
- /* There was a problem installing this route to the offload
- * device. For now, until we come up with more refined
- * policy handling, abruptly end IPv4 fib offloading for
- * for entire net by flushing offload device(s) of all
- * IPv4 routes, and mark IPv4 fib offloading broken from
- * this point forward.
- */
-
- fib_flush_external(fi->fib_net);
- fi->fib_net->ipv4.fib_offload_disabled = true;
-}
-EXPORT_SYMBOL_GPL(switchdev_fib_ipv4_abort);
-
bool switchdev_port_same_parent_id(struct net_device *a,
struct net_device *b)
{
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