diff options
| author | David Howells <dhowells@redhat.com> | 2024-02-01 13:29:36 +0300 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2024-03-06 02:35:26 +0300 |
| commit | 4b68137a20bc88fbbdf32301ed604ef000c94e5c (patch) | |
| tree | 403956ef1799300be36f10cf13457d57c085e231 /net/rxrpc/io_thread.c | |
| parent | 37473e41623409286ab2f5db628a59d4da9a79d7 (diff) | |
| download | linux-4b68137a20bc88fbbdf32301ed604ef000c94e5c.tar.xz | |
rxrpc: Extract useful fields from a received ACK to skb priv data
Extract useful fields from a received ACK packet into the skb private data
early on in the process of parsing incoming packets. This makes the ACK
fields available even before we've matched the ACK up to a call and will
allow us to deal with path MTU discovery probe responses even after the
relevant call has been completed.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
Diffstat (limited to 'net/rxrpc/io_thread.c')
| -rw-r--r-- | net/rxrpc/io_thread.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/rxrpc/io_thread.c b/net/rxrpc/io_thread.c index 4a3a08a0e2cd..0300baa9afcd 100644 --- a/net/rxrpc/io_thread.c +++ b/net/rxrpc/io_thread.c @@ -124,6 +124,7 @@ static bool rxrpc_extract_header(struct rxrpc_skb_priv *sp, struct sk_buff *skb) { struct rxrpc_wire_header whdr; + struct rxrpc_ackpacket ack; /* dig out the RxRPC connection details */ if (skb_copy_bits(skb, 0, &whdr, sizeof(whdr)) < 0) @@ -141,6 +142,16 @@ static bool rxrpc_extract_header(struct rxrpc_skb_priv *sp, sp->hdr.securityIndex = whdr.securityIndex; sp->hdr._rsvd = ntohs(whdr._rsvd); sp->hdr.serviceId = ntohs(whdr.serviceId); + + if (sp->hdr.type == RXRPC_PACKET_TYPE_ACK) { + if (skb_copy_bits(skb, sizeof(whdr), &ack, sizeof(ack)) < 0) + return rxrpc_bad_message(skb, rxrpc_badmsg_short_ack); + sp->ack.first_ack = ntohl(ack.firstPacket); + sp->ack.prev_ack = ntohl(ack.previousPacket); + sp->ack.acked_serial = ntohl(ack.serial); + sp->ack.reason = ack.reason; + sp->ack.nr_acks = ack.nAcks; + } return true; } |