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path: root/drivers/infiniband/hw/mlx4/mad.c
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Diffstat (limited to 'drivers/infiniband/hw/mlx4/mad.c')
-rw-r--r--drivers/infiniband/hw/mlx4/mad.c29
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index c7619716c31d..9cd2b002d7ae 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -64,6 +64,14 @@ enum {
#define GUID_TBL_BLK_NUM_ENTRIES 8
#define GUID_TBL_BLK_SIZE (GUID_TBL_ENTRY_SIZE * GUID_TBL_BLK_NUM_ENTRIES)
+/* Counters should be saturate once they reach their maximum value */
+#define ASSIGN_32BIT_COUNTER(counter, value) do {\
+ if ((value) > U32_MAX) \
+ counter = cpu_to_be32(U32_MAX); \
+ else \
+ counter = cpu_to_be32(value); \
+} while (0)
+
struct mlx4_mad_rcv_buf {
struct ib_grh grh;
u8 payload[256];
@@ -806,10 +814,14 @@ static int ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
static void edit_counter(struct mlx4_counter *cnt,
struct ib_pma_portcounters *pma_cnt)
{
- pma_cnt->port_xmit_data = cpu_to_be32((be64_to_cpu(cnt->tx_bytes)>>2));
- pma_cnt->port_rcv_data = cpu_to_be32((be64_to_cpu(cnt->rx_bytes)>>2));
- pma_cnt->port_xmit_packets = cpu_to_be32(be64_to_cpu(cnt->tx_frames));
- pma_cnt->port_rcv_packets = cpu_to_be32(be64_to_cpu(cnt->rx_frames));
+ ASSIGN_32BIT_COUNTER(pma_cnt->port_xmit_data,
+ (be64_to_cpu(cnt->tx_bytes) >> 2));
+ ASSIGN_32BIT_COUNTER(pma_cnt->port_rcv_data,
+ (be64_to_cpu(cnt->rx_bytes) >> 2));
+ ASSIGN_32BIT_COUNTER(pma_cnt->port_xmit_packets,
+ be64_to_cpu(cnt->tx_frames));
+ ASSIGN_32BIT_COUNTER(pma_cnt->port_rcv_packets,
+ be64_to_cpu(cnt->rx_frames));
}
static int iboe_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
@@ -1418,6 +1430,10 @@ static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx,
tun_qp->ring[i].addr,
rx_buf_size,
DMA_FROM_DEVICE);
+ if (ib_dma_mapping_error(ctx->ib_dev, tun_qp->ring[i].map)) {
+ kfree(tun_qp->ring[i].addr);
+ goto err;
+ }
}
for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) {
@@ -1430,6 +1446,11 @@ static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx,
tun_qp->tx_ring[i].buf.addr,
tx_buf_size,
DMA_TO_DEVICE);
+ if (ib_dma_mapping_error(ctx->ib_dev,
+ tun_qp->tx_ring[i].buf.map)) {
+ kfree(tun_qp->tx_ring[i].buf.addr);
+ goto tx_err;
+ }
tun_qp->tx_ring[i].ah = NULL;
}
spin_lock_init(&tun_qp->tx_lock);