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dccp ccid-2: Use existing function to test for data packets 

This replaces a switch statement with a test, using the equivalent
function dccp_data_packet(skb).  It also doubles the range of the field
`rx_num_data_pkts' by changing the type from `int' to `u32', avoiding
signed/unsigned comparison with the u16 field `dccps_r_ack_ratio'.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
This commit is contained in:
Gerrit Renker 2011-07-03 09:53:12 -06:00
parent b4d5f4b288
commit 58fdea0f31
2 changed files with 11 additions and 11 deletions
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16
net/dccp/ccids/ccid2.c
View File

@ -627,18 +627,14 @@ static void ccid2_hc_tx_exit(struct sock *sk)
static void ccid2_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb)
{
const struct dccp_sock *dp = dccp_sk(sk);
struct ccid2_hc_rx_sock *hc = ccid2_hc_rx_sk(sk);
switch (DCCP_SKB_CB(skb)->dccpd_type) {
case DCCP_PKT_DATA:
case DCCP_PKT_DATAACK:
hc->rx_data++;
if (hc->rx_data >= dp->dccps_r_ack_ratio) {
dccp_send_ack(sk);
hc->rx_data = 0;
}
break;
if (!dccp_data_packet(skb))
return;
if (++hc->rx_num_data_pkts >= dccp_sk(sk)->dccps_r_ack_ratio) {
dccp_send_ack(sk);
hc->rx_num_data_pkts = 0;
}
}

6
net/dccp/ccids/ccid2.h
View File

@ -97,8 +97,12 @@ static inline u32 rfc3390_bytes_to_packets(const u32 smss)
return smss <= 1095 ? 4 : (smss > 2190 ? 2 : 3);
}
/**
* struct ccid2_hc_rx_sock - Receiving end of CCID-2 half-connection
* @rx_num_data_pkts: number of data packets received since last feedback
*/
struct ccid2_hc_rx_sock {
int rx_data;
u32 rx_num_data_pkts;
};
static inline struct ccid2_hc_tx_sock *ccid2_hc_tx_sk(const struct sock *sk)