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mlxsw: spectrum_router: Sanitize IPv6 FIB rules 

We only allow FIB offload in the presence of default rules or an l3mdev
rule. In a similar fashion to IPv4 FIB rules, sanitize IPv6 rules.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2017-08-03 13:28:27 +02:00 committed by David S. Miller
parent 66a5763ac1
commit 583419fdf2
1 changed files with 25 additions and 0 deletions
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25
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
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@ -48,6 +48,7 @@
#include <net/neighbour.h>
#include <net/arp.h>
#include <net/ip_fib.h>
#include <net/ip6_fib.h>
#include <net/fib_rules.h>
#include <net/l3mdev.h>
#include <net/addrconf.h>
@ -3087,6 +3088,23 @@ static void mlxsw_sp_router_fib4_event_work(struct work_struct *work)
static void mlxsw_sp_router_fib6_event_work(struct work_struct *work)
{
struct mlxsw_sp_fib_event_work *fib_work =
container_of(work, struct mlxsw_sp_fib_event_work, work);
struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp;
struct fib_rule *rule;
rtnl_lock();
switch (fib_work->event) {
case FIB_EVENT_RULE_ADD: /* fall through */
case FIB_EVENT_RULE_DEL:
rule = fib_work->fr_info.rule;
if (!fib6_rule_default(rule) && !rule->l3mdev)
mlxsw_sp_router_fib_abort(mlxsw_sp);
fib_rule_put(rule);
break;
}
rtnl_unlock();
kfree(fib_work);
}
static void mlxsw_sp_router_fib4_event(struct mlxsw_sp_fib_event_work *fib_work,
@ -3119,6 +3137,13 @@ static void mlxsw_sp_router_fib4_event(struct mlxsw_sp_fib_event_work *fib_work,
static void mlxsw_sp_router_fib6_event(struct mlxsw_sp_fib_event_work *fib_work,
struct fib_notifier_info *info)
{
switch (fib_work->event) {
case FIB_EVENT_RULE_ADD: /* fall through */
case FIB_EVENT_RULE_DEL:
memcpy(&fib_work->fr_info, info, sizeof(fib_work->fr_info));
fib_rule_get(fib_work->fr_info.rule);
break;
}
}
/* Called with rcu_read_lock() */