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Diffstat (limited to 'net/dccp/options.c')
-rw-r--r--net/dccp/options.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/net/dccp/options.c b/net/dccp/options.c
index ca13f7731994..34d536d5f1a1 100644
--- a/net/dccp/options.c
+++ b/net/dccp/options.c
@@ -29,8 +29,6 @@ int sysctl_dccp_feat_ack_ratio = DCCPF_INITIAL_ACK_RATIO;
int sysctl_dccp_feat_send_ack_vector = DCCPF_INITIAL_SEND_ACK_VECTOR;
int sysctl_dccp_feat_send_ndp_count = DCCPF_INITIAL_SEND_NDP_COUNT;
-EXPORT_SYMBOL_GPL(sysctl_dccp_feat_sequence_window);
-
void dccp_minisock_init(struct dccp_minisock *dmsk)
{
dmsk->dccpms_sequence_window = sysctl_dccp_feat_sequence_window;
@@ -174,21 +172,25 @@ int dccp_parse_options(struct sock *sk, struct sk_buff *skb)
opt_recv->dccpor_timestamp_echo = ntohl(*(__be32 *)value);
dccp_pr_debug("%s rx opt: TIMESTAMP_ECHO=%u, len=%d, "
- "ackno=%llu, ", dccp_role(sk),
+ "ackno=%llu", dccp_role(sk),
opt_recv->dccpor_timestamp_echo,
len + 2,
(unsigned long long)
DCCP_SKB_CB(skb)->dccpd_ack_seq);
- if (len == 4)
+ if (len == 4) {
+ dccp_pr_debug_cat("\n");
break;
+ }
if (len == 6)
elapsed_time = ntohs(*(__be16 *)(value + 4));
else
elapsed_time = ntohl(*(__be32 *)(value + 4));
+ dccp_pr_debug_cat(", ELAPSED_TIME=%d\n", elapsed_time);
+
/* Give precedence to the biggest ELAPSED_TIME */
if (elapsed_time > opt_recv->dccpor_elapsed_time)
opt_recv->dccpor_elapsed_time = elapsed_time;
@@ -565,6 +567,14 @@ int dccp_insert_options(struct sock *sk, struct sk_buff *skb)
dccp_insert_options_feat(sk, skb))
return -1;
+ /*
+ * Obtain RTT sample from Request/Response exchange.
+ * This is currently used in CCID 3 initialisation.
+ */
+ if (DCCP_SKB_CB(skb)->dccpd_type == DCCP_PKT_REQUEST &&
+ dccp_insert_option_timestamp(sk, skb))
+ return -1;
+
/* XXX: insert other options when appropriate */
if (DCCP_SKB_CB(skb)->dccpd_opt_len != 0) {