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[DCCP]: Combine allocating & zeroing header space on skb

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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>
This commit is contained in:
Gerrit Renker
2006-11-10 11:22:32 -02:00
committed by David S. Miller
parent 89e7e57778
commit 9b42078ed6
4 changed files with 14 additions and 24 deletions
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8
net/dccp/ipv6.c
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@@ -537,9 +537,7 @@ static void dccp_v6_ctl_send_reset(struct sk_buff *rxskb)
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 @@ static void dccp_v6_reqsk_send_ack(struct sk_buff *rxskb,
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;