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-rw-r--r--net/rxrpc/call_event.c29
1 files changed, 11 insertions, 18 deletions
diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c
index 61a51c251e1b..aa1c8eee6557 100644
--- a/net/rxrpc/call_event.c
+++ b/net/rxrpc/call_event.c
@@ -248,7 +248,18 @@ static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
if (anno_type != RXRPC_TX_ANNO_RETRANS)
continue;
+ /* We need to reset the retransmission state, but we need to do
+ * so before we drop the lock as a new ACK/NAK may come in and
+ * confuse things
+ */
+ annotation &= ~RXRPC_TX_ANNO_MASK;
+ annotation |= RXRPC_TX_ANNO_RESENT;
+ call->rxtx_annotations[ix] = annotation;
+
skb = call->rxtx_buffer[ix];
+ if (!skb)
+ continue;
+
rxrpc_get_skb(skb, rxrpc_skb_got);
spin_unlock_bh(&call->lock);
@@ -262,24 +273,6 @@ static void rxrpc_resend(struct rxrpc_call *call, unsigned long now_j)
rxrpc_free_skb(skb, rxrpc_skb_freed);
spin_lock_bh(&call->lock);
-
- /* We need to clear the retransmit state, but there are two
- * things we need to be aware of: A new ACK/NAK might have been
- * received and the packet might have been hard-ACK'd (in which
- * case it will no longer be in the buffer).
- */
- if (after(seq, call->tx_hard_ack)) {
- annotation = call->rxtx_annotations[ix];
- anno_type = annotation & RXRPC_TX_ANNO_MASK;
- if (anno_type == RXRPC_TX_ANNO_RETRANS ||
- anno_type == RXRPC_TX_ANNO_NAK) {
- annotation &= ~RXRPC_TX_ANNO_MASK;
- annotation |= RXRPC_TX_ANNO_UNACK;
- }
- annotation |= RXRPC_TX_ANNO_RESENT;
- call->rxtx_annotations[ix] = annotation;
- }
-
if (after(call->tx_hard_ack, seq))
seq = call->tx_hard_ack;
}