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mlxsw: spectrum_router: Rollback virtual router adjacency pointer update 

In the rare case where the adjacency pointer cannot be updated for a
given virtual router, rollback the operation so that virtual routers
that are already using the new index will use the old one again.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Ido Schimmel 2020-11-25 21:35:03 +02:00 committed by Jakub Kicinski
parent 40e4413d5d
commit 9a4ab10c74
1 changed files with 14 additions and 1 deletions
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15
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
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@ -3279,9 +3279,22 @@ static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp,
nhgi->adj_index,
nhgi->ecmp_size);
if (err)
return err;
goto err_mass_update_vr;
}
return 0;
err_mass_update_vr:
list_for_each_entry_continue_reverse(fib_entry, &nh_grp->fib_list,
nexthop_group_node) {
struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi;
fib = fib_entry->fib_node->fib;
mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib->proto,
fib->vr->id, nhgi->adj_index,
nhgi->ecmp_size,
old_adj_index, old_ecmp_size);
}
return err;
}
static int __mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index,