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[DCCP]: Introduce generic function to test for `data packets'

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as per  RFC 4340, sec. 7.7.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gerrit Renker
2007-12-06 12:27:15 -02:00
committed by David S. Miller
parent c40616c597
commit 2180c41ca5
1 changed files with 12 additions and 0 deletions
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12
net/dccp/dccp.h
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@@ -334,6 +334,7 @@ struct dccp_skb_cb {
#define DCCP_SKB_CB(__skb) ((struct dccp_skb_cb *)&((__skb)->cb[0])) #define DCCP_SKB_CB(__skb) ((struct dccp_skb_cb *)&((__skb)->cb[0]))
/* RFC 4340, sec. 7.7 */
static inline int dccp_non_data_packet(const struct sk_buff *skb) static inline int dccp_non_data_packet(const struct sk_buff *skb)
{ {
const __u8 type = DCCP_SKB_CB(skb)->dccpd_type; const __u8 type = DCCP_SKB_CB(skb)->dccpd_type;
@@ -346,6 +347,17 @@ static inline int dccp_non_data_packet(const struct sk_buff *skb)
type == DCCP_PKT_SYNCACK; type == DCCP_PKT_SYNCACK;
} }
/* RFC 4340, sec. 7.7 */
static inline int dccp_data_packet(const struct sk_buff *skb)
{
const __u8 type = DCCP_SKB_CB(skb)->dccpd_type;
return type == DCCP_PKT_DATA ||
type == DCCP_PKT_DATAACK ||
type == DCCP_PKT_REQUEST ||
type == DCCP_PKT_RESPONSE;
}
static inline int dccp_packet_without_ack(const struct sk_buff *skb) static inline int dccp_packet_without_ack(const struct sk_buff *skb)
{ {
const __u8 type = DCCP_SKB_CB(skb)->dccpd_type; const __u8 type = DCCP_SKB_CB(skb)->dccpd_type;