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Message-Id: <20180322223351.31801-3-saeedm@mellanox.com>
Date: Thu, 22 Mar 2018 15:33:39 -0700
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Dave Watson <davejwatson@...com>,
Boris Pismenny <borisp@...lanox.com>,
Ilya Lesokhin <ilyal@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>
Subject: [PATCH V3 net-next 02/14] net: Rename and export copy_skb_header
From: Ilya Lesokhin <ilyal@...lanox.com>
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 <ilyal@...lanox.com>
Signed-off-by: Boris Pismenny <borisp@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
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 d8340e6e8814..dc0f81277723 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1031,6 +1031,7 @@ 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 715c13495ba6..9ae1812fb705 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -1304,7 +1304,7 @@ 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);
@@ -1312,6 +1312,7 @@ 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)
{
@@ -1354,7 +1355,7 @@ 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);
@@ -1418,7 +1419,7 @@ 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;
}
@@ -1598,7 +1599,7 @@ 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);
--
2.14.3
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