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path: root/net/dccp/ccids/lib/packet_history.c
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Diffstat (limited to 'net/dccp/ccids/lib/packet_history.c')
-rw-r--r--net/dccp/ccids/lib/packet_history.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/net/dccp/ccids/lib/packet_history.c b/net/dccp/ccids/lib/packet_history.c
index 7b6b03e9271a..420c60f8604d 100644
--- a/net/dccp/ccids/lib/packet_history.c
+++ b/net/dccp/ccids/lib/packet_history.c
@@ -365,6 +365,25 @@ struct dccp_tx_hist_entry *
EXPORT_SYMBOL_GPL(dccp_tx_hist_find_entry);
+int dccp_rx_hist_find_entry(const struct list_head *list, const u64 seq,
+ u8 *ccval)
+{
+ struct dccp_rx_hist_entry *packet = NULL, *entry;
+
+ list_for_each_entry(entry, list, dccphrx_node)
+ if (entry->dccphrx_seqno == seq) {
+ packet = entry;
+ break;
+ }
+
+ if (packet)
+ *ccval = packet->dccphrx_ccval;
+
+ return packet != NULL;
+}
+
+EXPORT_SYMBOL_GPL(dccp_rx_hist_find_entry);
+
void dccp_tx_hist_purge_older(struct dccp_tx_hist *hist,
struct list_head *list,
struct dccp_tx_hist_entry *packet)