From 4041a8ff653ec4e4d9e6395802cb3f4fca59f7f3 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 23 Jan 2020 22:21:59 +0000 Subject: rxrpc: Remove call->input_lock Remove call->input_lock as it was only necessary to serialise access to the state stored in the rxrpc_call struct by simultaneous softirq handlers presenting received packets. They now dump the packets in a queue and a single process-context handler now processes them. Signed-off-by: David Howells cc: Marc Dionne cc: linux-afs@lists.infradead.org --- net/rxrpc/input.c | 22 +++++----------------- 1 file changed, 5 insertions(+), 17 deletions(-) (limited to 'net/rxrpc/input.c') diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c index f4f6f3c62d03..13c52145a926 100644 --- a/net/rxrpc/input.c +++ b/net/rxrpc/input.c @@ -588,8 +588,6 @@ static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb) } } - spin_lock(&call->input_lock); - /* Received data implicitly ACKs all of the request packets we sent * when we're acting as a client. */ @@ -607,8 +605,6 @@ static void rxrpc_input_data(struct rxrpc_call *call, struct sk_buff *skb) out: trace_rxrpc_notify_socket(call->debug_id, serial); rxrpc_notify_socket(call); - - spin_unlock(&call->input_lock); rxrpc_free_skb(skb, rxrpc_skb_put_input); _leave(" [queued]"); } @@ -811,7 +807,7 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) offset = sizeof(struct rxrpc_wire_header); if (skb_copy_bits(skb, offset, &ack, sizeof(ack)) < 0) { rxrpc_proto_abort("XAK", call, 0); - goto out_not_locked; + goto out; } offset += sizeof(ack); @@ -863,7 +859,7 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) rxrpc_is_client_call(call)) { rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED, 0, -ENETRESET); - return; + goto out; } /* If we get an OUT_OF_SEQUENCE ACK from the server, that can also @@ -877,7 +873,7 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) rxrpc_is_client_call(call)) { rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED, 0, -ENETRESET); - return; + goto out; } /* Discard any out-of-order or duplicate ACKs (outside lock). */ @@ -885,7 +881,7 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) trace_rxrpc_rx_discard_ack(call->debug_id, ack_serial, first_soft_ack, call->acks_first_seq, prev_pkt, call->acks_prev_seq); - goto out_not_locked; + goto out; } info.rxMTU = 0; @@ -893,14 +889,12 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) if (skb->len >= ioffset + sizeof(info) && skb_copy_bits(skb, ioffset, &info, sizeof(info)) < 0) { rxrpc_proto_abort("XAI", call, 0); - goto out_not_locked; + goto out; } if (nr_acks > 0) skb_condense(skb); - spin_lock(&call->input_lock); - /* Discard any out-of-order or duplicate ACKs (inside lock). */ if (!rxrpc_is_ack_valid(call, first_soft_ack, prev_pkt)) { trace_rxrpc_rx_discard_ack(call->debug_id, ack_serial, @@ -992,8 +986,6 @@ static void rxrpc_input_ack(struct rxrpc_call *call, struct sk_buff *skb) rxrpc_congestion_management(call, skb, &summary, acked_serial); out: - spin_unlock(&call->input_lock); -out_not_locked: rxrpc_free_skb(skb_put, rxrpc_skb_put_input); rxrpc_free_skb(skb_old, rxrpc_skb_put_ack); } @@ -1005,12 +997,8 @@ static void rxrpc_input_ackall(struct rxrpc_call *call, struct sk_buff *skb) { struct rxrpc_ack_summary summary = { 0 }; - spin_lock(&call->input_lock); - if (rxrpc_rotate_tx_window(call, call->tx_top, &summary)) rxrpc_end_tx_phase(call, false, "ETL"); - - spin_unlock(&call->input_lock); } /* -- cgit