Implement loss intervals option. Similar to dropped packets option implementation, reference it.
Changes:
- Adds tfrc_sp_parse_loss_intervals_opt, that parses loss intervals option received data
Signed-off-by: Ivo Calado <ivocalado@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Erivaldo Xavier <desadoc@xxxxxxxxx>
Signed-off-by: Leandro Sales <leandroal@xxxxxxxxx>
Index: dccp_tree_work03/net/dccp/ccids/lib/loss_interval_sp.c
===================================================================
--- dccp_tree_work03.orig/net/dccp/ccids/lib/loss_interval_sp.c 2009-10-08 22:59:38.114908156 -0300
+++ dccp_tree_work03/net/dccp/ccids/lib/loss_interval_sp.c 2009-10-08 22:59:43.986408220 -0300
@@ -550,6 +550,46 @@
li_data->dropped_packets_data[0] = optlen/3;
}
+/*
+ * tfrc_sp_parse_loss_intervals_opt - parses loss interval option
+ * li_data: used to store parsed data
+ * optval: option data
+ * optlen: option length
+ */
+void tfrc_sp_parse_loss_intervals_opt(struct tfrc_tx_li_data *li_data,
+ u8 *optval, u8 optlen)
+{
+ u8 pos;
+ u32 length;
+
+ if ((optlen%9) != 1) {
+ li_data->loss_interval_data[0] = 0;
+ return;
+ }
+
+ pos = 1;
+ optval++;
+
+ while (pos < optlen) {
+ length = ntohl(((*((u32 *)optval)) & 0xFFFFFF00) >> 8);
+ pos += 3;
+ optval += 3;
+
+ length += ntohl(((*((u32 *)optval))&0x7FFFFF00) >> 8);
+ pos += 6;
+ optval += 6;
+
+ li_data->loss_interval_data[(pos-1)%9] = length;
+
+ if ((pos/9) == 9) {
+ li_data->loss_interval_data[0] = 9;
+ return;
+ }
+ }
+
+ li_data->loss_interval_data[0] = (optlen-1)/9;
+}
+
static void tfrc_sp_lh_calc_i_mean(struct tfrc_loss_hist *lh, __u8 curr_ccval)
{
u32 i_i, i_tot0 = 0, i_tot1 = 0, w_tot = 0;
Index: dccp_tree_work03/net/dccp/ccids/lib/loss_interval_sp.h
===================================================================
--- dccp_tree_work03.orig/net/dccp/ccids/lib/loss_interval_sp.h 2009-10-08 22:59:38.114908156 -0300
+++ dccp_tree_work03/net/dccp/ccids/lib/loss_interval_sp.h 2009-10-08 22:59:43.986408220 -0300
@@ -177,6 +177,8 @@
u8 curr_ccval, u64 seqno);
extern void tfrc_sp_parse_dropped_packets_opt(struct tfrc_tx_li_data *li_data,
u8 *optval, u8 optlen);
+extern void tfrc_sp_parse_loss_intervals_opt(struct tfrc_tx_li_data *li_data,
+ u8 *optval, u8 optlen);
extern void tfrc_sp_tx_ld_cleanup(struct tfrc_ecn_echo_sum_entry **);
#endif /* _DCCP_LI_HIST_SP_ */
--
To unsubscribe from this list: send the line "unsubscribe dccp" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
