From add16de717b4b9df71d3d554dab231179a234e2d Mon Sep 17 00:00:00 2001 From: Huisong Li Date: Fri, 10 Mar 2023 17:35:03 +0800 Subject: [PATCH] net/hns3: fix possible truncation of hash key when config [ upstream commit bb38316e738ad6009b3f20b3abfaf27ea8cb0202 ] The hash key length of hns3 driver is obtained from firmware. If the length is a multiple of HNS3_RSS_HASH_KEY_NUM (16), the last part of hash key will be truncated. Fixes: 88347111eb53 ("net/hns3: refactor set RSS hash algorithm and key interface") Signed-off-by: Huisong Li Signed-off-by: Dongdong Liu --- drivers/net/hns3/hns3_rss.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/hns3/hns3_rss.c b/drivers/net/hns3/hns3_rss.c index c38e12f79d..6478150f7b 100644 --- a/drivers/net/hns3/hns3_rss.c +++ b/drivers/net/hns3/hns3_rss.c @@ -301,7 +301,8 @@ hns3_set_rss_algo_key(struct hns3_hw *hw, uint8_t hash_algo, req->hash_config |= (hash_algo & HNS3_RSS_HASH_ALGO_MASK); req->hash_config |= (idx << HNS3_RSS_HASH_KEY_OFFSET_B); - if (idx == max_bd_num - 1) + if (idx == max_bd_num - 1 && + (key_len % HNS3_RSS_HASH_KEY_NUM) != 0) cur_key_size = key_len % HNS3_RSS_HASH_KEY_NUM; else cur_key_size = HNS3_RSS_HASH_KEY_NUM;