switchdev: remove FIB offload infrastructure

Since this is now taken care of by FIB notifier, remove the code, with
all unused dependencies.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 181 deletions

diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index abd8d2a38a7d..02beb35f577f 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -21,7 +21,6 @@
 #include <linux/workqueue.h>
 #include <linux/if_vlan.h>
 #include <linux/rtnetlink.h>
-#include <net/ip_fib.h>
 #include <net/switchdev.h>
 
 /**
@@ -344,8 +343,6 @@ static size_t switchdev_obj_size(const struct switchdev_obj *obj)
         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:
@@ -1108,184 +1105,6 @@ int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
 }
 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)
-                fib_info_offload_inc(fi);
-
-        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)
-                fib_info_offload_dec(fi);
-
-        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)
 {