netdev - [PATCH net 03/19] rxrpc: Separate call retransmission from other conn events

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Message-ID: <167308519246.1538866.13323069187362517647.stgit@warthog.procyon.org.uk>
Date:   Sat, 07 Jan 2023 09:53:12 +0000
From:   David Howells <dhowells@...hat.com>
To:     netdev@...r.kernel.org
Cc:     Marc Dionne <marc.dionne@...istor.com>,
        linux-afs@...ts.infradead.org, dhowells@...hat.com,
        linux-afs@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH net 03/19] rxrpc: Separate call retransmission from other conn
 events

Call the rxrpc_conn_retransmit_call() directly from rxrpc_input_packet()
rather than calling it via connection event handling.

Signed-off-by: David Howells <dhowells@...hat.com>
cc: Marc Dionne <marc.dionne@...istor.com>
cc: linux-afs@...ts.infradead.org
---

 net/rxrpc/ar-internal.h |    2 ++
 net/rxrpc/conn_event.c  |   34 +++++-----------------------------
 net/rxrpc/io_thread.c   |    2 +-
 3 files changed, 8 insertions(+), 30 deletions(-)

diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index 9cf763c338bc..f3b8806e7241 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -897,6 +897,8 @@ void rxrpc_clean_up_local_conns(struct rxrpc_local *);
 /*
  * conn_event.c
  */
+void rxrpc_conn_retransmit_call(struct rxrpc_connection *conn, struct sk_buff *skb,
+				unsigned int channel);
 void rxrpc_process_connection(struct work_struct *);
 void rxrpc_process_delayed_final_acks(struct rxrpc_connection *, bool);
 int rxrpc_input_conn_packet(struct rxrpc_connection *conn, struct sk_buff *skb);
diff --git a/net/rxrpc/conn_event.c b/net/rxrpc/conn_event.c
index 480364bcbf85..dfd29882126f 100644
--- a/net/rxrpc/conn_event.c
+++ b/net/rxrpc/conn_event.c
@@ -19,9 +19,9 @@
 /*
  * Retransmit terminal ACK or ABORT of the previous call.
  */
-static void rxrpc_conn_retransmit_call(struct rxrpc_connection *conn,
-				       struct sk_buff *skb,
-				       unsigned int channel)
+void rxrpc_conn_retransmit_call(struct rxrpc_connection *conn,
+				struct sk_buff *skb,
+				unsigned int channel)
 {
 	struct rxrpc_skb_priv *sp = skb ? rxrpc_skb(skb) : NULL;
 	struct rxrpc_channel *chan;
@@ -292,24 +292,6 @@ static int rxrpc_process_event(struct rxrpc_connection *conn,
 	_enter("{%d},{%u,%%%u},", conn->debug_id, sp->hdr.type, sp->hdr.serial);
 
 	switch (sp->hdr.type) {
-	case RXRPC_PACKET_TYPE_DATA:
-	case RXRPC_PACKET_TYPE_ACK:
-		rxrpc_conn_retransmit_call(conn, skb,
-					   sp->hdr.cid & RXRPC_CHANNELMASK);
-		return 0;
-
-	case RXRPC_PACKET_TYPE_BUSY:
-		/* Just ignore BUSY packets for now. */
-		return 0;
-
-	case RXRPC_PACKET_TYPE_ABORT:
-		conn->error = -ECONNABORTED;
-		conn->abort_code = skb->priority;
-		conn->state = RXRPC_CONN_REMOTELY_ABORTED;
-		set_bit(RXRPC_CONN_DONT_REUSE, &conn->flags);
-		rxrpc_abort_calls(conn, RXRPC_CALL_REMOTELY_ABORTED, sp->hdr.serial);
-		return -ECONNABORTED;
-
 	case RXRPC_PACKET_TYPE_CHALLENGE:
 		return conn->security->respond_to_challenge(conn, skb,
 							    _abort_code);
@@ -504,18 +486,12 @@ int rxrpc_input_conn_packet(struct rxrpc_connection *conn, struct sk_buff *skb)
 
 	if (conn->state >= RXRPC_CONN_REMOTELY_ABORTED) {
 		_leave(" = -ECONNABORTED [%u]", conn->state);
-		return -ECONNABORTED;
+		return 0;
 	}
 
 	_enter("{%d},{%u,%%%u},", conn->debug_id, sp->hdr.type, sp->hdr.serial);
 
 	switch (sp->hdr.type) {
-	case RXRPC_PACKET_TYPE_DATA:
-	case RXRPC_PACKET_TYPE_ACK:
-		rxrpc_conn_retransmit_call(conn, skb,
-					   sp->hdr.cid & RXRPC_CHANNELMASK);
-		return 0;
-
 	case RXRPC_PACKET_TYPE_BUSY:
 		/* Just ignore BUSY packets for now. */
 		return 0;
@@ -526,7 +502,7 @@ int rxrpc_input_conn_packet(struct rxrpc_connection *conn, struct sk_buff *skb)
 		conn->state = RXRPC_CONN_REMOTELY_ABORTED;
 		set_bit(RXRPC_CONN_DONT_REUSE, &conn->flags);
 		rxrpc_abort_calls(conn, RXRPC_CALL_REMOTELY_ABORTED, sp->hdr.serial);
-		return -ECONNABORTED;
+		return 0;
 
 	case RXRPC_PACKET_TYPE_CHALLENGE:
 	case RXRPC_PACKET_TYPE_RESPONSE:
diff --git a/net/rxrpc/io_thread.c b/net/rxrpc/io_thread.c
index 1ad067d66fb6..0e1a548d35f8 100644
--- a/net/rxrpc/io_thread.c
+++ b/net/rxrpc/io_thread.c
@@ -358,7 +358,7 @@ static int rxrpc_input_packet_on_conn(struct rxrpc_connection *conn,
 					    sp->hdr.seq,
 					    sp->hdr.serial,
 					    sp->hdr.flags);
-		rxrpc_input_conn_packet(conn, skb);
+		rxrpc_conn_retransmit_call(conn, skb, channel);
 		return 0;
 	}