Message ID | 20190329233850.29630-6-jeffrey.t.kirsher@intel.com |
---|---|
State | Accepted |
Delegated to: | Jeff Kirsher |
Headers | show |
Series | [1/6] igb: mark expected switch fall-through | expand |
> -----Original Message----- > From: Intel-wired-lan [mailto:intel-wired-lan-bounces@osuosl.org] On > Behalf Of Jeff Kirsher > Sent: Friday, March 29, 2019 4:39 PM > To: intel-wired-lan@lists.osuosl.org > Subject: [Intel-wired-lan] [PATCH 6/6] iavf: iavf_client: use struct_size() > helper > > From: "Gustavo A. R. Silva" <gustavo@embeddedor.com> > > One of the more common cases of allocation size calculations is finding the > size of a structure that has a zero-sized array at the end, along with memory > for some number of elements for that array. For example: > > struct foo { > int stuff; > struct boo entry[]; > }; > > size = sizeof(struct foo) + count * sizeof(struct boo); > > Instead of leaving these open-coded and prone to type mistakes, we can > now use the new struct_size() helper: > > size = struct_size(instance, entry, count); > > This code was detected with the help of Coccinelle. > > Signed-off-by: "Gustavo A. R. Silva" <gustavo@embeddedor.com> > --- > drivers/net/ethernet/intel/iavf/iavf_client.c | 7 +++---- > 1 file changed, 3 insertions(+), 4 deletions(-) Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
diff --git a/drivers/net/ethernet/intel/iavf/iavf_client.c b/drivers/net/ethernet/intel/iavf/iavf_client.c index aea45364fd1c..ab9db7e9f09d 100644 --- a/drivers/net/ethernet/intel/iavf/iavf_client.c +++ b/drivers/net/ethernet/intel/iavf/iavf_client.c @@ -451,7 +451,7 @@ static int iavf_client_setup_qvlist(struct i40e_info *ldev, struct i40e_qv_info *qv_info; iavf_status err; u32 v_idx, i; - u32 msg_size; + size_t msg_size; if (adapter->aq_required) return -EAGAIN; @@ -469,9 +469,8 @@ static int iavf_client_setup_qvlist(struct i40e_info *ldev, } v_qvlist_info = (struct virtchnl_iwarp_qvlist_info *)qvlist_info; - msg_size = sizeof(struct virtchnl_iwarp_qvlist_info) + - (sizeof(struct virtchnl_iwarp_qv_info) * - (v_qvlist_info->num_vectors - 1)); + msg_size = struct_size(v_qvlist_info, qv_info, + v_qvlist_info->num_vectors - 1); adapter->client_pending |= BIT(VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP); err = iavf_aq_send_msg_to_pf(&adapter->hw,