1 files changed, 8 insertions, 6 deletions

diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c
index ce8059130070..be1b8baaf298 100644
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -481,9 +481,8 @@ done_computing_x:
                            jiffies + usecs_to_jiffies(t_nfb));
 }
 
-static int ccid3_hc_tx_parse_options(struct sock *sk, unsigned char option,
-                                     unsigned char len, u16 idx,
-                                     unsigned char *value)
+static int ccid3_hc_tx_parse_options(struct sock *sk, u8 packet_type,
+                                     u8 option, u8 *optval, u8 optlen)
 {
         struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk);
         struct ccid3_options_received *opt_recv = &hc->tx_options_received;
@@ -492,12 +491,15 @@ static int ccid3_hc_tx_parse_options(struct sock *sk, unsigned char option,
         switch (option) {
         case TFRC_OPT_RECEIVE_RATE:
         case TFRC_OPT_LOSS_EVENT_RATE:
-                if (unlikely(len != 4)) {
+                /* Must be ignored on Data packets, cf. RFC 4342 8.3 and 8.5 */
+                if (packet_type == DCCP_PKT_DATA)
+                        break;
+                if (unlikely(optlen != 4)) {
                         DCCP_WARN("%s(%p), invalid len %d for %u\n",
-                                  dccp_role(sk), sk, len, option);
+                                  dccp_role(sk), sk, optlen, option);
                         return -EINVAL;
                 }
-                opt_val = ntohl(get_unaligned((__be32 *)value));
+                opt_val = ntohl(get_unaligned((__be32 *)optval));
 
                 if (option == TFRC_OPT_RECEIVE_RATE) {
                         opt_recv->ccid3or_receive_rate = opt_val;