diff options
| author | Michal Swiatkowski <michal.swiatkowski@intel.com> | 2019-07-25 02:53:59 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2019-08-26 23:25:14 -0700 |
| commit | 9c7dd7566d189426dd013edc3ddd00c1d981a8a0 (patch) | |
| tree | b851f7f082ceb42e4851bbed212e6ed3def6ecfe | |
| parent | e63a1dbdc7df4b6b48af920a86630c20a44340cf (diff) | |
ice: add validation in OP_CONFIG_VSI_QUEUES VF message
Check num_queue_pairs to avoid access to unallocated field of
vsi->tx_rings/vsi->rx_rings. Without this validation we can set
vsi->alloc_txq/vsi->alloc_rxq to value smaller than ICE_MAX_BASE_QS_PER_VF
and send this command with num_queue_pairs greater than
vsi->alloc_txq/vsi->alloc_rxq. This lead to access to unallocated memory.
In VF vsi alloc_txq and alloc_rxq should be the same. Get minimum
because looks more readable.
Also add validation for ring_len param. It should be greater than 32 and
be multiple of 32. Incorrect value leads to hang traffic on PF.
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c index 86637d99ee77..e6578d2f0876 100644 --- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c @@ -1713,6 +1713,19 @@ static bool ice_vc_isvalid_q_id(struct ice_vf *vf, u16 vsi_id, u8 qid) } /** + * ice_vc_isvalid_ring_len + * @ring_len: length of ring + * + * check for the valid ring count, should be multiple of ICE_REQ_DESC_MULTIPLE + */ +static bool ice_vc_isvalid_ring_len(u16 ring_len) +{ + return (ring_len >= ICE_MIN_NUM_DESC && + ring_len <= ICE_MAX_NUM_DESC && + !(ring_len % ICE_REQ_DESC_MULTIPLE)); +} + +/** * ice_vc_config_rss_key * @vf: pointer to the VF info * @msg: pointer to the msg buffer @@ -2107,16 +2120,17 @@ static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg) goto error_param; } - if (qci->num_queue_pairs > ICE_MAX_BASE_QS_PER_VF) { - dev_err(&pf->pdev->dev, - "VF-%d requesting more than supported number of queues: %d\n", - vf->vf_id, qci->num_queue_pairs); + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { v_ret = VIRTCHNL_STATUS_ERR_PARAM; goto error_param; } - vsi = pf->vsi[vf->lan_vsi_idx]; - if (!vsi) { + if (qci->num_queue_pairs > ICE_MAX_BASE_QS_PER_VF || + qci->num_queue_pairs > min_t(u16, vsi->alloc_txq, vsi->alloc_rxq)) { + dev_err(&pf->pdev->dev, + "VF-%d requesting more than supported number of queues: %d\n", + vf->vf_id, min_t(u16, vsi->alloc_txq, vsi->alloc_rxq)); v_ret = VIRTCHNL_STATUS_ERR_PARAM; goto error_param; } @@ -2127,6 +2141,8 @@ static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg) qpi->rxq.vsi_id != qci->vsi_id || qpi->rxq.queue_id != qpi->txq.queue_id || qpi->txq.headwb_enabled || + !ice_vc_isvalid_ring_len(qpi->txq.ring_len) || + !ice_vc_isvalid_ring_len(qpi->rxq.ring_len) || !ice_vc_isvalid_q_id(vf, qci->vsi_id, qpi->txq.queue_id)) { v_ret = VIRTCHNL_STATUS_ERR_PARAM; goto error_param; @@ -2137,7 +2153,8 @@ static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg) /* copy Rx queue info from VF into VSI */ vsi->rx_rings[i]->dma = qpi->rxq.dma_ring_addr; vsi->rx_rings[i]->count = qpi->rxq.ring_len; - if (qpi->rxq.databuffer_size > ((16 * 1024) - 128)) { + if (qpi->rxq.databuffer_size > ((16 * 1024) - 128) || + qpi->rxq.databuffer_size < 1024) { v_ret = VIRTCHNL_STATUS_ERR_PARAM; goto error_param; } |