Commit 35d04610 authored by Cong Wang's avatar Cong Wang Committed by David S. Miller

net: clean up skb headers code

commit 1a37e412 (net: Use 16bits for *_headers
fields of struct skbuff) converts skb->*_header to u16,
some #if NET_SKBUFF_DATA_USES_OFFSET are now useless,
and to be safe, we could just use "X = (typeof(X)) ~0U;"
as suggested by David.

Cc: David S. Miller <davem@davemloft.net>
Cc: Simon Horman <horms@verge.net.au>
Signed-off-by: default avatarCong Wang <amwang@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 938177e9
......@@ -1593,7 +1593,7 @@ static inline void skb_set_inner_mac_header(struct sk_buff *skb,
}
static inline bool skb_transport_header_was_set(const struct sk_buff *skb)
{
return skb->transport_header != ~0U;
return skb->transport_header != (typeof(skb->transport_header))~0U;
}
static inline unsigned char *skb_transport_header(const struct sk_buff *skb)
......@@ -1636,7 +1636,7 @@ static inline unsigned char *skb_mac_header(const struct sk_buff *skb)
static inline int skb_mac_header_was_set(const struct sk_buff *skb)
{
return skb->mac_header != ~0U;
return skb->mac_header != (typeof(skb->mac_header))~0U;
}
static inline void skb_reset_mac_header(struct sk_buff *skb)
......
......@@ -199,9 +199,7 @@ struct sk_buff *__alloc_skb_head(gfp_t gfp_mask, int node)
skb->truesize = sizeof(struct sk_buff);
atomic_set(&skb->users, 1);
#ifdef NET_SKBUFF_DATA_USES_OFFSET
skb->mac_header = (__u16) ~0U;
#endif
skb->mac_header = (typeof(skb->mac_header))~0U;
out:
return skb;
}
......@@ -275,10 +273,8 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask,
skb->data = data;
skb_reset_tail_pointer(skb);
skb->end = skb->tail + size;
#ifdef NET_SKBUFF_DATA_USES_OFFSET
skb->mac_header = (__u16) ~0U;
skb->transport_header = (__u16) ~0U;
#endif
skb->mac_header = (typeof(skb->mac_header))~0U;
skb->transport_header = (typeof(skb->transport_header))~0U;
/* make sure we initialize shinfo sequentially */
shinfo = skb_shinfo(skb);
......@@ -344,10 +340,8 @@ struct sk_buff *build_skb(void *data, unsigned int frag_size)
skb->data = data;
skb_reset_tail_pointer(skb);
skb->end = skb->tail + size;
#ifdef NET_SKBUFF_DATA_USES_OFFSET
skb->mac_header = (__u16) ~0U;
skb->transport_header = (__u16) ~0U;
#endif
skb->mac_header = (typeof(skb->mac_header))~0U;
skb->transport_header = (typeof(skb->transport_header))~0U;
/* make sure we initialize shinfo sequentially */
shinfo = skb_shinfo(skb);
......
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