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Commit b0768a86 authored by Toshiaki Makita's avatar Toshiaki Makita Committed by Daniel Borkmann
Browse files

net: Export skb_headers_offset_update 



This is needed for veth XDP which does skb_copy_expand()-like operation.

v2:
- Drop skb_copy_header part because it has already been exported now.

Signed-off-by: default avatarToshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent c4c20217

include/linux/skbuff.h

+1 −0
Original line number Diff line number Diff line
@@ -1038,6 +1038,7 @@ static inline struct sk_buff *alloc_skb_fclone(unsigned int size, 
}



struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src);

void skb_headers_offset_update(struct sk_buff *skb, int off);

int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask);

struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t priority);

void skb_copy_header(struct sk_buff *new, const struct sk_buff *old);

net/core/skbuff.c

+2 −1
Original line number Diff line number Diff line
@@ -1291,7 +1291,7 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask) 
}

EXPORT_SYMBOL(skb_clone);



static void skb_headers_offset_update(struct sk_buff *skb, int off)

void skb_headers_offset_update(struct sk_buff *skb, int off)

{

	/* Only adjust this if it actually is csum_start rather than csum */

	if (skb->ip_summed == CHECKSUM_PARTIAL)
@@ -1305,6 +1305,7 @@ static void skb_headers_offset_update(struct sk_buff *skb, int off) 
	skb->inner_network_header += off;

	skb->inner_mac_header += off;

}

EXPORT_SYMBOL(skb_headers_offset_update);



void skb_copy_header(struct sk_buff *new, const struct sk_buff *old)

{