diff options
| author | David Howells <dhowells@redhat.com> | 2022-11-14 12:21:32 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2022-12-01 13:36:38 +0000 |
| commit | f14febd8df5a490acc40b919808f163e997d7f03 (patch) | |
| tree | a8b1f59d8dc66db55774153af7ece54049af90d5 /net | |
| parent | 2cc800863c49a1f4be1b10b756c09a878d3a3f00 (diff) | |
| download | linux-stable-f14febd8df5a490acc40b919808f163e997d7f03.tar.gz linux-stable-f14febd8df5a490acc40b919808f163e997d7f03.tar.bz2 linux-stable-f14febd8df5a490acc40b919808f163e997d7f03.zip | |
rxrpc: Extract the code from a received ABORT packet much earlier
Extract the code from a received rx ABORT packet much earlier and in a
single place and harmonise the responses to malformed ABORT packets.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Diffstat (limited to 'net')
| -rw-r--r-- | net/rxrpc/conn_event.c | 12 | ||||
| -rw-r--r-- | net/rxrpc/input.c | 31 |
2 files changed, 20 insertions, 23 deletions
diff --git a/net/rxrpc/conn_event.c b/net/rxrpc/conn_event.c index 71ed6b9dc63a..f890a30c4df6 100644 --- a/net/rxrpc/conn_event.c +++ b/net/rxrpc/conn_event.c @@ -282,8 +282,6 @@ static int rxrpc_process_event(struct rxrpc_connection *conn, u32 *_abort_code) { struct rxrpc_skb_priv *sp = rxrpc_skb(skb); - __be32 wtmp; - u32 abort_code; int loop, ret; if (conn->state >= RXRPC_CONN_REMOTELY_ABORTED) { @@ -305,16 +303,8 @@ static int rxrpc_process_event(struct rxrpc_connection *conn, return 0; case RXRPC_PACKET_TYPE_ABORT: - if (skb_copy_bits(skb, sizeof(struct rxrpc_wire_header), - &wtmp, sizeof(wtmp)) < 0) { - trace_rxrpc_rx_eproto(NULL, sp->hdr.serial, - tracepoint_string("bad_abort")); - return -EPROTO; - } - abort_code = ntohl(wtmp); - conn->error = -ECONNABORTED; - conn->abort_code = abort_code; + 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); diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c index 44caf88e04b8..42c8257158f7 100644 --- a/net/rxrpc/input.c +++ b/net/rxrpc/input.c @@ -1019,20 +1019,11 @@ static void rxrpc_input_ackall(struct rxrpc_call *call, struct sk_buff *skb) static void rxrpc_input_abort(struct rxrpc_call *call, struct sk_buff *skb) { struct rxrpc_skb_priv *sp = rxrpc_skb(skb); - __be32 wtmp; - u32 abort_code = RX_CALL_DEAD; - - _enter(""); - - if (skb->len >= 4 && - skb_copy_bits(skb, sizeof(struct rxrpc_wire_header), - &wtmp, sizeof(wtmp)) >= 0) - abort_code = ntohl(wtmp); - trace_rxrpc_rx_abort(call, sp->hdr.serial, abort_code); + trace_rxrpc_rx_abort(call, sp->hdr.serial, skb->priority); rxrpc_set_call_completion(call, RXRPC_CALL_REMOTELY_ABORTED, - abort_code, -ECONNABORTED); + skb->priority, -ECONNABORTED); } /* @@ -1194,6 +1185,20 @@ int rxrpc_extract_header(struct rxrpc_skb_priv *sp, struct sk_buff *skb) } /* + * Extract the abort code from an ABORT packet and stash it in skb->priority. + */ +static bool rxrpc_extract_abort(struct sk_buff *skb) +{ + __be32 wtmp; + + if (skb_copy_bits(skb, sizeof(struct rxrpc_wire_header), + &wtmp, sizeof(wtmp)) < 0) + return false; + skb->priority = ntohl(wtmp); + return true; +} + +/* * handle data received on the local endpoint * - may be called in interrupt context * @@ -1264,8 +1269,10 @@ int rxrpc_input_packet(struct sock *udp_sk, struct sk_buff *skb) case RXRPC_PACKET_TYPE_ACKALL: if (sp->hdr.callNumber == 0) goto bad_message; - fallthrough; + break; case RXRPC_PACKET_TYPE_ABORT: + if (!rxrpc_extract_abort(skb)) + return true; /* Just discard if malformed */ break; case RXRPC_PACKET_TYPE_DATA: |