[PATCH] net: Initialize all members in skb_gro_remcsum_init()

[Geert Uytterhoeven]

skb_gro_remcsum_init() initializes the gro_remcsum.delta member only,
leading to compiler warnings about a possibly uninitialized
gro_remcsum.offset member:

drivers/net/vxlan.c: In function âvxlan_gro_receiveâ:
drivers/net/vxlan.c:602: warning: âgrc.offsetâ may be used uninitialized in this function
net/ipv4/fou.c: In function âgue_gro_receiveâ:
net/ipv4/fou.c:262: warning: âgrc.offsetâ may be used uninitialized in this function

While these are harmless for now:
  - skb_gro_remcsum_process() sets offset before changing delta,
  - skb_gro_remcsum_cleanup() checks if delta is non-zero before
    accessing offset,
it's safer to let the initialization function initialize all members.

Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
---
 include/linux/netdevice.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 5897b4ea5a3f9e0f..429d1790a27e85f3 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2342,6 +2342,7 @@ struct gro_remcsum {
 
 static inline void skb_gro_remcsum_init(struct gro_remcsum *grc)
 {
+	grc->offset = 0;
 	grc->delta = 0;
 }
 
-- 
1.9.1

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