From 08303c189581c985e60f588ad92a041e46b6e307 Mon Sep 17 00:00:00 2001 From: Ilya Lesokhin Date: Mon, 30 Apr 2018 10:16:11 +0300 Subject: [PATCH] net: Rename and export copy_skb_header copy_skb_header is renamed to skb_copy_header and exported. Exposing this function give more flexibility in copying SKBs. skb_copy and skb_copy_expand do not give enough control over which parts are copied. Signed-off-by: Ilya Lesokhin Signed-off-by: Boris Pismenny Signed-off-by: David S. Miller --- include/linux/skbuff.h | 1 + net/core/skbuff.c | 9 +++++---- 2 files changed, 6 insertions(+), 4 deletions(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index a4a5c0c5cba8..908d66e55b14 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1034,6 +1034,7 @@ static inline struct sk_buff *alloc_skb_fclone(unsigned int size, struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src); 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); struct sk_buff *skb_copy(const struct sk_buff *skb, gfp_t priority); struct sk_buff *__pskb_copy_fclone(struct sk_buff *skb, int headroom, gfp_t gfp_mask, bool fclone); diff --git a/net/core/skbuff.c b/net/core/skbuff.c index c647cfe114e0..c642304f178c 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -1305,7 +1305,7 @@ static void skb_headers_offset_update(struct sk_buff *skb, int off) skb->inner_mac_header += off; } -static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old) +void skb_copy_header(struct sk_buff *new, const struct sk_buff *old) { __copy_skb_header(new, old); @@ -1313,6 +1313,7 @@ static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old) skb_shinfo(new)->gso_segs = skb_shinfo(old)->gso_segs; skb_shinfo(new)->gso_type = skb_shinfo(old)->gso_type; } +EXPORT_SYMBOL(skb_copy_header); static inline int skb_alloc_rx_flag(const struct sk_buff *skb) { @@ -1355,7 +1356,7 @@ struct sk_buff *skb_copy(const struct sk_buff *skb, gfp_t gfp_mask) BUG_ON(skb_copy_bits(skb, -headerlen, n->head, headerlen + skb->len)); - copy_skb_header(n, skb); + skb_copy_header(n, skb); return n; } EXPORT_SYMBOL(skb_copy); @@ -1419,7 +1420,7 @@ struct sk_buff *__pskb_copy_fclone(struct sk_buff *skb, int headroom, skb_clone_fraglist(n); } - copy_skb_header(n, skb); + skb_copy_header(n, skb); out: return n; } @@ -1599,7 +1600,7 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb, BUG_ON(skb_copy_bits(skb, -head_copy_len, n->head + head_copy_off, skb->len + head_copy_len)); - copy_skb_header(n, skb); + skb_copy_header(n, skb); skb_headers_offset_update(n, newheadroom - oldheadroom);