@@ -1119,6 +1119,8 @@ static enum mapping_status get_mapping_status(struct sock *ssk,
}
if (mpext->data_fin == 1) {
+ u64 data_fin_seq;
+
if (data_len == 1) {
bool updated = mptcp_update_rcv_data_fin(msk, mpext->data_seq,
mpext->dsn64);
@@ -1131,26 +1133,26 @@ static enum mapping_status get_mapping_status(struct sock *ssk,
*/
skb_ext_del(skb, SKB_EXT_MPTCP);
return MAPPING_OK;
- } else {
- if (updated)
- mptcp_schedule_work((struct sock *)msk);
-
- return MAPPING_DATA_FIN;
}
- } else {
- u64 data_fin_seq = mpext->data_seq + data_len - 1;
- /* If mpext->data_seq is a 32-bit value, data_fin_seq
- * must also be limited to 32 bits.
- */
- if (!mpext->dsn64)
- data_fin_seq &= GENMASK_ULL(31, 0);
+ if (updated)
+ mptcp_schedule_work((struct sock *)msk);
- mptcp_update_rcv_data_fin(msk, data_fin_seq, mpext->dsn64);
- pr_debug("DATA_FIN with mapping seq=%llu dsn64=%d",
- data_fin_seq, mpext->dsn64);
+ return MAPPING_DATA_FIN;
}
+ data_fin_seq = mpext->data_seq + data_len - 1;
+
+ /* If mpext->data_seq is a 32-bit value, data_fin_seq must also
+ * be limited to 32 bits.
+ */
+ if (!mpext->dsn64)
+ data_fin_seq &= GENMASK_ULL(31, 0);
+
+ mptcp_update_rcv_data_fin(msk, data_fin_seq, mpext->dsn64);
+ pr_debug("DATA_FIN with mapping seq=%llu dsn64=%d",
+ data_fin_seq, mpext->dsn64);
+
/* Adjust for DATA_FIN using 1 byte of sequence space */
data_len--;
}