diff options
| author | Pravin B Shelar <pshelar@nicira.com> | 2013-03-07 17:21:40 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-10 01:08:57 +0400 |
| commit | f5b1729443fdaf57766f99dd6e18d9b4b6f7a89e (patch) | |
| tree | 31bee49ea7a33c93170f871a33d467a6d412305f | |
| parent | ee579677c29954f20e48e5bb80ae85b30100c2e0 (diff) | |
| download | linux-f5b1729443fdaf57766f99dd6e18d9b4b6f7a89e.tar.xz | |
net: Add skb_headers_offset_update helper function.
This function will be used in next VXLAN_GSO patch. This patch does
not change any functionality.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/skbuff.c | 34 |
1 files changed, 14 insertions, 20 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 0a48ae20c903..0278c7f787bf 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -867,6 +867,17 @@ 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) +{ + /* {transport,network,mac}_header and tail are relative to skb->head */ + skb->transport_header += off; + skb->network_header += off; + if (skb_mac_header_was_set(skb)) + skb->mac_header += off; + skb->inner_transport_header += off; + skb->inner_network_header += off; +} + static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old) { #ifndef NET_SKBUFF_DATA_USES_OFFSET @@ -879,13 +890,7 @@ static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old) __copy_skb_header(new, old); #ifndef NET_SKBUFF_DATA_USES_OFFSET - /* {transport,network,mac}_header are relative to skb->head */ - new->transport_header += offset; - new->network_header += offset; - if (skb_mac_header_was_set(new)) - new->mac_header += offset; - new->inner_transport_header += offset; - new->inner_network_header += offset; + skb_headers_offset_update(new, offset); #endif skb_shinfo(new)->gso_size = skb_shinfo(old)->gso_size; skb_shinfo(new)->gso_segs = skb_shinfo(old)->gso_segs; @@ -1077,14 +1082,8 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail, #else skb->end = skb->head + size; #endif - /* {transport,network,mac}_header and tail are relative to skb->head */ skb->tail += off; - skb->transport_header += off; - skb->network_header += off; - if (skb_mac_header_was_set(skb)) - skb->mac_header += off; - skb->inner_transport_header += off; - skb->inner_network_header += off; + skb_headers_offset_update(skb, off); /* Only adjust this if it actually is csum_start rather than csum */ if (skb->ip_summed == CHECKSUM_PARTIAL) skb->csum_start += nhead; @@ -1180,12 +1179,7 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb, if (n->ip_summed == CHECKSUM_PARTIAL) n->csum_start += off; #ifdef NET_SKBUFF_DATA_USES_OFFSET - n->transport_header += off; - n->network_header += off; - if (skb_mac_header_was_set(skb)) - n->mac_header += off; - n->inner_transport_header += off; - n->inner_network_header += off; + skb_headers_offset_update(n, off); #endif return n; |