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authorIdo Schimmel <idosch@mellanox.com>2018-06-15 16:23:36 +0300
committerDavid S. Miller <davem@davemloft.net>2018-06-15 09:11:16 -0700
commit53b562df8c203e189fc69f7af0d8668e8dec5a8a (patch)
tree98dc6a358149e98f86f86baba800a9eee96ae8e1 /drivers/net/ethernet/mellanox
parent6eba08c3626bca42b3cb0c9d43ac37ab11b4be1a (diff)
download96b-common-53b562df8c203e189fc69f7af0d8668e8dec5a8a.tar.gz
mlxsw: spectrum_router: Allow appending to dev-only routes
Commit f34436a43092 ("net/ipv6: Simplify route replace and appending into multipath route") changed the IPv6 route append logic so that dev-only routes can be appended and not only gatewayed routes. Align mlxsw with the new behaviour. Fixes: f34436a43092 ("net/ipv6: Simplify route replace and appending into multipath route") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox')
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c27
1 files changed, 19 insertions, 8 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
index 77b2adb29341..c8956ab224ea 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -4771,11 +4771,11 @@ mlxsw_sp_fib6_entry_rt(const struct mlxsw_sp_fib6_entry *fib6_entry)
static struct mlxsw_sp_fib6_entry *
mlxsw_sp_fib6_node_mp_entry_find(const struct mlxsw_sp_fib_node *fib_node,
- const struct fib6_info *nrt, bool replace)
+ const struct fib6_info *nrt, bool append)
{
struct mlxsw_sp_fib6_entry *fib6_entry;
- if (!mlxsw_sp_fib6_rt_can_mp(nrt) || replace)
+ if (!append)
return NULL;
list_for_each_entry(fib6_entry, &fib_node->entry_list, common.list) {
@@ -4790,8 +4790,7 @@ mlxsw_sp_fib6_node_mp_entry_find(const struct mlxsw_sp_fib_node *fib_node,
break;
if (rt->fib6_metric < nrt->fib6_metric)
continue;
- if (rt->fib6_metric == nrt->fib6_metric &&
- mlxsw_sp_fib6_rt_can_mp(rt))
+ if (rt->fib6_metric == nrt->fib6_metric)
return fib6_entry;
if (rt->fib6_metric > nrt->fib6_metric)
break;
@@ -5316,7 +5315,8 @@ static void mlxsw_sp_fib6_entry_replace(struct mlxsw_sp *mlxsw_sp,
}
static int mlxsw_sp_router_fib6_add(struct mlxsw_sp *mlxsw_sp,
- struct fib6_info *rt, bool replace)
+ struct fib6_info *rt, bool replace,
+ bool append)
{
struct mlxsw_sp_fib6_entry *fib6_entry;
struct mlxsw_sp_fib_node *fib_node;
@@ -5342,7 +5342,7 @@ static int mlxsw_sp_router_fib6_add(struct mlxsw_sp *mlxsw_sp,
/* Before creating a new entry, try to append route to an existing
* multipath entry.
*/
- fib6_entry = mlxsw_sp_fib6_node_mp_entry_find(fib_node, rt, replace);
+ fib6_entry = mlxsw_sp_fib6_node_mp_entry_find(fib_node, rt, append);
if (fib6_entry) {
err = mlxsw_sp_fib6_entry_nexthop_add(mlxsw_sp, fib6_entry, rt);
if (err)
@@ -5350,6 +5350,14 @@ static int mlxsw_sp_router_fib6_add(struct mlxsw_sp *mlxsw_sp,
return 0;
}
+ /* We received an append event, yet did not find any route to
+ * append to.
+ */
+ if (WARN_ON(append)) {
+ err = -EINVAL;
+ goto err_fib6_entry_append;
+ }
+
fib6_entry = mlxsw_sp_fib6_entry_create(mlxsw_sp, fib_node, rt);
if (IS_ERR(fib6_entry)) {
err = PTR_ERR(fib6_entry);
@@ -5367,6 +5375,7 @@ static int mlxsw_sp_router_fib6_add(struct mlxsw_sp *mlxsw_sp,
err_fib6_node_entry_link:
mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry);
err_fib6_entry_create:
+err_fib6_entry_append:
err_fib6_entry_nexthop_add:
mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
return err;
@@ -5717,7 +5726,7 @@ 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;
- bool replace;
+ bool replace, append;
int err;
rtnl_lock();
@@ -5728,8 +5737,10 @@ static void mlxsw_sp_router_fib6_event_work(struct work_struct *work)
case FIB_EVENT_ENTRY_APPEND: /* fall through */
case FIB_EVENT_ENTRY_ADD:
replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE;
+ append = fib_work->event == FIB_EVENT_ENTRY_APPEND;
err = mlxsw_sp_router_fib6_add(mlxsw_sp,
- fib_work->fen6_info.rt, replace);
+ fib_work->fen6_info.rt, replace,
+ append);
if (err)
mlxsw_sp_router_fib_abort(mlxsw_sp);
mlxsw_sp_rt6_release(fib_work->fen6_info.rt);