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| author |   David Howells <dhowells@redhat.com> | 2019-08-27 09:51:30 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2019-08-27 09:51:30 +0100 |
| commit | e2de6c4048989007b353164b19d6b7d5be4fa9e3 (patch) | |
| tree | 09df8d01294fbeb0477e7eebe82ff213b46e7288 /net/rxrpc/ar-internal.h | |
| parent | rxrpc: Improve jumbo packet counting (diff) | |
| download | linux-dev-e2de6c4048989007b353164b19d6b7d5be4fa9e3.tar.xz linux-dev-e2de6c4048989007b353164b19d6b7d5be4fa9e3.zip | |
rxrpc: Use info in skbuff instead of reparsing a jumbo packet
Use the information now cached in the skbuff private data to avoid the need
to reparse a jumbo packet. We can find all the subpackets by dead
reckoning, so it's only necessary to note how many there are, whether the
last one is flagged as LAST_PACKET and whether any have the REQUEST_ACK
flag set.
This is necessary as once recvmsg() can see the packet, it can start
modifying it, such as doing in-place decryption.
Fixes: 248f219cb8bc ("rxrpc: Rewrite the data and ack handling code")
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc/ar-internal.h')
| -rw-r--r-- | net/rxrpc/ar-internal.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index 87cff6c218b6..20d7907a5bc6 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -617,8 +617,7 @@ struct rxrpc_call { #define RXRPC_TX_ANNO_LAST 0x04 #define RXRPC_TX_ANNO_RESENT 0x08 -#define RXRPC_RX_ANNO_JUMBO 0x3f /* Jumbo subpacket number + 1 if not zero */ -#define RXRPC_RX_ANNO_JLAST 0x40 /* Set if last element of a jumbo packet */ +#define RXRPC_RX_ANNO_SUBPACKET 0x3f /* Subpacket number in jumbogram */ #define RXRPC_RX_ANNO_VERIFIED 0x80 /* Set if verified and decrypted */ rxrpc_seq_t tx_hard_ack; /* Dead slot in buffer; the first transmitted but * not hard-ACK'd packet follows this. |