[PATCH] i40evf: pass struct virtchnl_filter by reference rather than by value

[Colin King]

From: Colin Ian King <colin.k...@canonical.com>

Passing struct virtchnl_filter f by value requires a 272 byte copy
on x86_64, so instead pass it by reference is much more efficient. Also
adjust some lines that are over 80 chars.

Detected by CoverityScan, CID#1465285 ("Big parameter passed by value")

Signed-off-by: Colin Ian King <colin.k...@canonical.com>
---
 .../net/ethernet/intel/i40evf/i40evf_virtchnl.c    | 32 ++++++++++++----------
 1 file changed, 18 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c 
b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
index 6134b61e0938..3c76c817ca1a 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
@@ -1048,24 +1048,28 @@ void i40evf_disable_channels(struct i40evf_adapter 
*adapter)
  * Print the cloud filter
  **/
 static void i40evf_print_cloud_filter(struct i40evf_adapter *adapter,
-                                     struct virtchnl_filter f)
+                                     struct virtchnl_filter *f)
 {
-       switch (f.flow_type) {
+       switch (f->flow_type) {
        case VIRTCHNL_TCP_V4_FLOW:
                dev_info(&adapter->pdev->dev, "dst_mac: %pM src_mac: %pM 
vlan_id: %hu dst_ip: %pI4 src_ip %pI4 dst_port %hu src_port %hu\n",
-                        &f.data.tcp_spec.dst_mac, &f.data.tcp_spec.src_mac,
-                        ntohs(f.data.tcp_spec.vlan_id),
-                        &f.data.tcp_spec.dst_ip[0], &f.data.tcp_spec.src_ip[0],
-                        ntohs(f.data.tcp_spec.dst_port),
-                        ntohs(f.data.tcp_spec.src_port));
+                        &f->data.tcp_spec.dst_mac,
+                        &f->data.tcp_spec.src_mac,
+                        ntohs(f->data.tcp_spec.vlan_id),
+                        &f->data.tcp_spec.dst_ip[0],
+                        &f->data.tcp_spec.src_ip[0],
+                        ntohs(f->data.tcp_spec.dst_port),
+                        ntohs(f->data.tcp_spec.src_port));
                break;
        case VIRTCHNL_TCP_V6_FLOW:
                dev_info(&adapter->pdev->dev, "dst_mac: %pM src_mac: %pM 
vlan_id: %hu dst_ip: %pI6 src_ip %pI6 dst_port %hu src_port %hu\n",
-                        &f.data.tcp_spec.dst_mac, &f.data.tcp_spec.src_mac,
-                        ntohs(f.data.tcp_spec.vlan_id),
-                        &f.data.tcp_spec.dst_ip, &f.data.tcp_spec.src_ip,
-                        ntohs(f.data.tcp_spec.dst_port),
-                        ntohs(f.data.tcp_spec.src_port));
+                        &f->data.tcp_spec.dst_mac,
+                        &f->data.tcp_spec.src_mac,
+                        ntohs(f->data.tcp_spec.vlan_id),
+                        &f->data.tcp_spec.dst_ip,
+                        &f->data.tcp_spec.src_ip,
+                        ntohs(f->data.tcp_spec.dst_port),
+                        ntohs(f->data.tcp_spec.src_port));
                break;
        }
 }
@@ -1303,7 +1307,7 @@ void i40evf_virtchnl_completion(struct i40evf_adapter 
*adapter,
                                                 i40evf_stat_str(&adapter->hw,
                                                                 v_retval));
                                        i40evf_print_cloud_filter(adapter,
-                                                                 cf->f);
+                                                                 &cf->f);
                                        list_del(&cf->list);
                                        kfree(cf);
                                        adapter->num_cloud_filters--;
@@ -1322,7 +1326,7 @@ void i40evf_virtchnl_completion(struct i40evf_adapter 
*adapter,
                                                 i40evf_stat_str(&adapter->hw,
                                                                 v_retval));
                                        i40evf_print_cloud_filter(adapter,
-                                                                 cf->f);
+                                                                 &cf->f);
                                }
                        }
                        }
-- 
2.15.1