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path: root/drivers/net/netdevsim/fib.c
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Diffstat (limited to 'drivers/net/netdevsim/fib.c')
-rw-r--r--drivers/net/netdevsim/fib.c175
1 files changed, 107 insertions, 68 deletions
diff --git a/drivers/net/netdevsim/fib.c b/drivers/net/netdevsim/fib.c
index f61d094746c0..13540dee7364 100644
--- a/drivers/net/netdevsim/fib.c
+++ b/drivers/net/netdevsim/fib.c
@@ -18,7 +18,7 @@
#include <net/ip_fib.h>
#include <net/ip6_fib.h>
#include <net/fib_rules.h>
-#include <net/netns/generic.h>
+#include <net/net_namespace.h>
#include "netdevsim.h"
@@ -33,15 +33,14 @@ struct nsim_per_fib_data {
};
struct nsim_fib_data {
+ struct notifier_block fib_nb;
struct nsim_per_fib_data ipv4;
struct nsim_per_fib_data ipv6;
};
-static unsigned int nsim_fib_net_id;
-
-u64 nsim_fib_get_val(struct net *net, enum nsim_resource_id res_id, bool max)
+u64 nsim_fib_get_val(struct nsim_fib_data *fib_data,
+ enum nsim_resource_id res_id, bool max)
{
- struct nsim_fib_data *fib_data = net_generic(net, nsim_fib_net_id);
struct nsim_fib_entry *entry;
switch (res_id) {
@@ -64,12 +63,10 @@ u64 nsim_fib_get_val(struct net *net, enum nsim_resource_id res_id, bool max)
return max ? entry->max : entry->num;
}
-int nsim_fib_set_max(struct net *net, enum nsim_resource_id res_id, u64 val,
- struct netlink_ext_ack *extack)
+static void nsim_fib_set_max(struct nsim_fib_data *fib_data,
+ enum nsim_resource_id res_id, u64 val)
{
- struct nsim_fib_data *fib_data = net_generic(net, nsim_fib_net_id);
struct nsim_fib_entry *entry;
- int err = 0;
switch (res_id) {
case NSIM_RESOURCE_IPV4_FIB:
@@ -85,20 +82,10 @@ int nsim_fib_set_max(struct net *net, enum nsim_resource_id res_id, u64 val,
entry = &fib_data->ipv6.rules;
break;
default:
- return 0;
- }
-
- /* not allowing a new max to be less than curren occupancy
- * --> no means of evicting entries
- */
- if (val < entry->num) {
- NL_SET_ERR_MSG_MOD(extack, "New size is less than current occupancy");
- err = -EINVAL;
- } else {
- entry->max = val;
+ WARN_ON(1);
+ return;
}
-
- return err;
+ entry->max = val;
}
static int nsim_fib_rule_account(struct nsim_fib_entry *entry, bool add,
@@ -120,9 +107,9 @@ static int nsim_fib_rule_account(struct nsim_fib_entry *entry, bool add,
return err;
}
-static int nsim_fib_rule_event(struct fib_notifier_info *info, bool add)
+static int nsim_fib_rule_event(struct nsim_fib_data *data,
+ struct fib_notifier_info *info, bool add)
{
- struct nsim_fib_data *data = net_generic(info->net, nsim_fib_net_id);
struct netlink_ext_ack *extack = info->extack;
int err = 0;
@@ -157,9 +144,9 @@ static int nsim_fib_account(struct nsim_fib_entry *entry, bool add,
return err;
}
-static int nsim_fib_event(struct fib_notifier_info *info, bool add)
+static int nsim_fib_event(struct nsim_fib_data *data,
+ struct fib_notifier_info *info, bool add)
{
- struct nsim_fib_data *data = net_generic(info->net, nsim_fib_net_id);
struct netlink_ext_ack *extack = info->extack;
int err = 0;
@@ -178,18 +165,22 @@ static int nsim_fib_event(struct fib_notifier_info *info, bool add)
static int nsim_fib_event_nb(struct notifier_block *nb, unsigned long event,
void *ptr)
{
+ struct nsim_fib_data *data = container_of(nb, struct nsim_fib_data,
+ fib_nb);
struct fib_notifier_info *info = ptr;
int err = 0;
switch (event) {
case FIB_EVENT_RULE_ADD: /* fall through */
case FIB_EVENT_RULE_DEL:
- err = nsim_fib_rule_event(info, event == FIB_EVENT_RULE_ADD);
+ err = nsim_fib_rule_event(data, info,
+ event == FIB_EVENT_RULE_ADD);
break;
case FIB_EVENT_ENTRY_ADD: /* fall through */
case FIB_EVENT_ENTRY_DEL:
- err = nsim_fib_event(info, event == FIB_EVENT_ENTRY_ADD);
+ err = nsim_fib_event(data, info,
+ event == FIB_EVENT_ENTRY_ADD);
break;
}
@@ -199,68 +190,116 @@ static int nsim_fib_event_nb(struct notifier_block *nb, unsigned long event,
/* inconsistent dump, trying again */
static void nsim_fib_dump_inconsistent(struct notifier_block *nb)
{
- struct nsim_fib_data *data;
- struct net *net;
+ struct nsim_fib_data *data = container_of(nb, struct nsim_fib_data,
+ fib_nb);
- rcu_read_lock();
- for_each_net_rcu(net) {
- data = net_generic(net, nsim_fib_net_id);
+ data->ipv4.fib.num = 0ULL;
+ data->ipv4.rules.num = 0ULL;
+ data->ipv6.fib.num = 0ULL;
+ data->ipv6.rules.num = 0ULL;
+}
- data->ipv4.fib.num = 0ULL;
- data->ipv4.rules.num = 0ULL;
+static u64 nsim_fib_ipv4_resource_occ_get(void *priv)
+{
+ struct nsim_fib_data *data = priv;
- data->ipv6.fib.num = 0ULL;
- data->ipv6.rules.num = 0ULL;
- }
- rcu_read_unlock();
+ return nsim_fib_get_val(data, NSIM_RESOURCE_IPV4_FIB, false);
}
-static struct notifier_block nsim_fib_nb = {
- .notifier_call = nsim_fib_event_nb,
-};
-
-/* Initialize per network namespace state */
-static int __net_init nsim_fib_netns_init(struct net *net)
+static u64 nsim_fib_ipv4_rules_res_occ_get(void *priv)
{
- struct nsim_fib_data *data = net_generic(net, nsim_fib_net_id);
+ struct nsim_fib_data *data = priv;
- data->ipv4.fib.max = (u64)-1;
- data->ipv4.rules.max = (u64)-1;
+ return nsim_fib_get_val(data, NSIM_RESOURCE_IPV4_FIB_RULES, false);
+}
- data->ipv6.fib.max = (u64)-1;
- data->ipv6.rules.max = (u64)-1;
+static u64 nsim_fib_ipv6_resource_occ_get(void *priv)
+{
+ struct nsim_fib_data *data = priv;
- return 0;
+ return nsim_fib_get_val(data, NSIM_RESOURCE_IPV6_FIB, false);
}
-static struct pernet_operations nsim_fib_net_ops = {
- .init = nsim_fib_netns_init,
- .id = &nsim_fib_net_id,
- .size = sizeof(struct nsim_fib_data),
-};
+static u64 nsim_fib_ipv6_rules_res_occ_get(void *priv)
+{
+ struct nsim_fib_data *data = priv;
+
+ return nsim_fib_get_val(data, NSIM_RESOURCE_IPV6_FIB_RULES, false);
+}
-void nsim_fib_exit(void)
+static void nsim_fib_set_max_all(struct nsim_fib_data *data,
+ struct devlink *devlink)
{
- unregister_pernet_subsys(&nsim_fib_net_ops);
- unregister_fib_notifier(&nsim_fib_nb);
+ enum nsim_resource_id res_ids[] = {
+ NSIM_RESOURCE_IPV4_FIB, NSIM_RESOURCE_IPV4_FIB_RULES,
+ NSIM_RESOURCE_IPV6_FIB, NSIM_RESOURCE_IPV6_FIB_RULES
+ };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(res_ids); i++) {
+ int err;
+ u64 val;
+
+ err = devlink_resource_size_get(devlink, res_ids[i], &val);
+ if (err)
+ val = (u64) -1;
+ nsim_fib_set_max(data, res_ids[i], val);
+ }
}
-int nsim_fib_init(void)
+struct nsim_fib_data *nsim_fib_create(struct devlink *devlink,
+ struct netlink_ext_ack *extack)
{
+ struct nsim_fib_data *data;
int err;
- err = register_pernet_subsys(&nsim_fib_net_ops);
- if (err < 0) {
- pr_err("Failed to register pernet subsystem\n");
- goto err_out;
- }
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return ERR_PTR(-ENOMEM);
+
+ nsim_fib_set_max_all(data, devlink);
- err = register_fib_notifier(&nsim_fib_nb, nsim_fib_dump_inconsistent);
- if (err < 0) {
+ data->fib_nb.notifier_call = nsim_fib_event_nb;
+ err = register_fib_notifier(devlink_net(devlink), &data->fib_nb,
+ nsim_fib_dump_inconsistent, extack);
+ if (err) {
pr_err("Failed to register fib notifier\n");
goto err_out;
}
+ devlink_resource_occ_get_register(devlink,
+ NSIM_RESOURCE_IPV4_FIB,
+ nsim_fib_ipv4_resource_occ_get,
+ data);
+ devlink_resource_occ_get_register(devlink,
+ NSIM_RESOURCE_IPV4_FIB_RULES,
+ nsim_fib_ipv4_rules_res_occ_get,
+ data);
+ devlink_resource_occ_get_register(devlink,
+ NSIM_RESOURCE_IPV6_FIB,
+ nsim_fib_ipv6_resource_occ_get,
+ data);
+ devlink_resource_occ_get_register(devlink,
+ NSIM_RESOURCE_IPV6_FIB_RULES,
+ nsim_fib_ipv6_rules_res_occ_get,
+ data);
+ return data;
+
err_out:
- return err;
+ kfree(data);
+ return ERR_PTR(err);
+}
+
+void nsim_fib_destroy(struct devlink *devlink, struct nsim_fib_data *data)
+{
+ devlink_resource_occ_get_unregister(devlink,
+ NSIM_RESOURCE_IPV6_FIB_RULES);
+ devlink_resource_occ_get_unregister(devlink,
+ NSIM_RESOURCE_IPV6_FIB);
+ devlink_resource_occ_get_unregister(devlink,
+ NSIM_RESOURCE_IPV4_FIB_RULES);
+ devlink_resource_occ_get_unregister(devlink,
+ NSIM_RESOURCE_IPV4_FIB);
+ unregister_fib_notifier(devlink_net(devlink), &data->fib_nb);
+ kfree(data);
}