From 75908376038c44ea154e4c2782ee367e679c81b1 Mon Sep 17 00:00:00 2001 From: Alexander Guller Date: Wed, 16 Jul 2014 11:57:49 +0300 Subject: [PATCH] net/mlx4_core: Make sure the max number of QPs per MCG isn't exceeded In B0 steering mode when adding QPs to the default MCG entry need to check that maximal number of QPs per MCG entry was not exceeded. Signed-off-by: Alexander Guller Reviewed-by: Aviad Yehezkel Signed-off-by: Eugenia Emantayev Signed-off-by: Amir Vadai Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/mcg.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/mcg.c b/drivers/net/ethernet/mellanox/mlx4/mcg.c index 04a8636..39ab85a 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mcg.c +++ b/drivers/net/ethernet/mellanox/mlx4/mcg.c @@ -477,8 +477,14 @@ static int add_promisc_qp(struct mlx4_dev *dev, u8 port, /* now need to add all the promisc qps to default entry */ memset(mgm, 0, sizeof *mgm); members_count = 0; - list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list) + list_for_each_entry(dqp, &s_steer->promisc_qps[steer], list) { + if (members_count == dev->caps.num_qp_per_mgm) { + /* entry is full */ + err = -ENOMEM; + goto out_list; + } mgm->qp[members_count++] = cpu_to_be32(dqp->qpn & MGM_QPN_MASK); + } mgm->members_count = cpu_to_be32(members_count | MLX4_PROT_ETH << 30); err = mlx4_WRITE_PROMISC(dev, port, steer, mailbox); -- 2.7.4