[PATCH][next] cxgb4: Use struct_size() helper

From: Gustavo A. R. Silva
Date: Fri Jun 19 2020 - 13:56:30 EST


Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Addresses-KSPP-ID: https://github.com/KSPP/linux/issues/83
Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
---
drivers/net/ethernet/chelsio/cxgb4/sge.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index 1359158652b7..b3da3d05aa2d 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -2431,7 +2431,7 @@ int cxgb4_ethofld_send_flowc(struct net_device *dev, u32 eotid, u32 tc)
struct sk_buff *skb;
int ret = 0;

- len = sizeof(*flowc) + sizeof(struct fw_flowc_mnemval) * nparams;
+ len = struct_size(flowc, mnemval, nparams);
len16 = DIV_ROUND_UP(len, 16);

entry = cxgb4_lookup_eotid(&adap->tids, eotid);
--
2.27.0