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[DCCP]: Tidyup CCID3 list handling 

As Arnaldo Carvalho de Melo points out I should be using list_entry in case
the structure changes in future. Current code functions but is reliant
on position and requires type cast.

Noticed when doing this that I have one more variable than I needed so
removing that also.

Signed off by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ian McDonald 2006-08-29 17:50:19 -07:00 committed by David S. Miller
parent 8394e9b2fa
commit fc747e82b4
1 changed files with 6 additions and 6 deletions
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12
net/dccp/ccids/ccid3.c
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@ -900,7 +900,7 @@ found:
static void ccid3_hc_rx_update_li(struct sock *sk, u64 seq_loss, u8 win_loss) static void ccid3_hc_rx_update_li(struct sock *sk, u64 seq_loss, u8 win_loss)
{ {
struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk); struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk);
struct dccp_li_hist_entry *next, *head; struct dccp_li_hist_entry *head;
u64 seq_temp; u64 seq_temp;
if (list_empty(&hcrx->ccid3hcrx_li_hist)) { if (list_empty(&hcrx->ccid3hcrx_li_hist)) {
@ -908,15 +908,15 @@ static void ccid3_hc_rx_update_li(struct sock *sk, u64 seq_loss, u8 win_loss)
&hcrx->ccid3hcrx_li_hist, seq_loss, win_loss)) &hcrx->ccid3hcrx_li_hist, seq_loss, win_loss))
return; return;
next = (struct dccp_li_hist_entry *) head = list_entry(hcrx->ccid3hcrx_li_hist.next,
hcrx->ccid3hcrx_li_hist.next; struct dccp_li_hist_entry, dccplih_node);
next->dccplih_interval = ccid3_hc_rx_calc_first_li(sk); head->dccplih_interval = ccid3_hc_rx_calc_first_li(sk);
} else { } else {
struct dccp_li_hist_entry *entry; struct dccp_li_hist_entry *entry;
struct list_head *tail; struct list_head *tail;
head = (struct dccp_li_hist_entry *) head = list_entry(hcrx->ccid3hcrx_li_hist.next,
hcrx->ccid3hcrx_li_hist.next; struct dccp_li_hist_entry, dccplih_node);
/* FIXME win count check removed as was wrong */ /* FIXME win count check removed as was wrong */
/* should make this check with receive history */ /* should make this check with receive history */
/* and compare there as per section 10.2 of RFC4342 */ /* and compare there as per section 10.2 of RFC4342 */