netdev - [PATCH 3/8] net: r8152: use skb_list_walk

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Date:   Wed,  8 Jan 2020 16:59:04 -0500
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     netdev@...r.kernel.org, davem@...emloft.net,
        siva.kallam@...adcom.com, christopher.lee@...i.com,
        ecree@...arflare.com, johannes.berg@...el.com
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>
Subject: [PATCH 3/8] net: r8152: use skb_list_walk_safe helper for gso segments

This is a straight-forward conversion case for the new function, and
while we're at it, we can remove a null write to skb->next by replacing
it with skb_mark_not_on_list.

Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
---
 drivers/net/usb/r8152.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 9ec1da429514..fe22a582373b 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -1897,8 +1897,8 @@ static void r8152_csum_workaround(struct r8152 *tp, struct sk_buff *skb,
 {
 	if (skb_shinfo(skb)->gso_size) {
 		netdev_features_t features = tp->netdev->features;
+		struct sk_buff *segs, *seg, *next;
 		struct sk_buff_head seg_list;
-		struct sk_buff *segs, *nskb;
 
 		features &= ~(NETIF_F_SG | NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
 		segs = skb_gso_segment(skb, features);
@@ -1907,12 +1907,10 @@ static void r8152_csum_workaround(struct r8152 *tp, struct sk_buff *skb,
 
 		__skb_queue_head_init(&seg_list);
 
-		do {
-			nskb = segs;
-			segs = segs->next;
-			nskb->next = NULL;
-			__skb_queue_tail(&seg_list, nskb);
-		} while (segs);
+		skb_list_walk_safe(segs, seg, next) {
+			skb_mark_not_on_list(seg);
+			__skb_queue_tail(&seg_list, seg);
+		}
 
 		skb_queue_splice(&seg_list, list);
 		dev_kfree_skb(skb);
-- 
2.24.1