[DCCP]: Combine allocating & zeroing header space on skb
This is a code simplification:
it combines three often recurring operations into one inline function,
* allocate `len' bytes header space in skb
* fill these `len' bytes with zeroes
* cast the start of this header space as dccp_hdr
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 6f1c2ad..116bddb 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -537,9 +537,7 @@
skb_reserve(skb, dccp_v6_ctl_socket->sk->sk_prot->max_header);
- skb->h.raw = skb_push(skb, dccp_hdr_reset_len);
- dh = dccp_hdr(skb);
- memset(dh, 0, dccp_hdr_reset_len);
+ dh = dccp_zeroed_hdr(skb, dccp_hdr_reset_len);
/* Swap the send and the receive. */
dh->dccph_type = DCCP_PKT_RESET;
@@ -601,9 +599,7 @@
skb_reserve(skb, dccp_v6_ctl_socket->sk->sk_prot->max_header);
- skb->h.raw = skb_push(skb, dccp_hdr_ack_len);
- dh = dccp_hdr(skb);
- memset(dh, 0, dccp_hdr_ack_len);
+ dh = dccp_zeroed_hdr(skb, dccp_hdr_ack_len);
/* Build DCCP header and checksum it. */
dh->dccph_type = DCCP_PKT_ACK;