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| author | David Howells <dhowells@redhat.com> | 2022-08-27 14:27:56 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2022-11-08 16:42:28 +0000 |
| commit | 5d7edbc9231ec6b60f9c5b7e7980e9a1cd92e6bb (patch) | |
| tree | bb10e432f005b9988c542d079a1c6f0200b4fc64 /net/rxrpc/misc.c | |
| parent | d4d02d8bb5c412d977af7ea7c7ea91977a6a64dc (diff) | |
| download | linux-5d7edbc9231ec6b60f9c5b7e7980e9a1cd92e6bb.tar.gz linux-5d7edbc9231ec6b60f9c5b7e7980e9a1cd92e6bb.tar.bz2 linux-5d7edbc9231ec6b60f9c5b7e7980e9a1cd92e6bb.zip | |
rxrpc: Get rid of the Rx ring
Get rid of the Rx ring and replace it with a pair of queues instead. One
queue gets the packets that are in-sequence and are ready for processing by
recvmsg(); the other queue gets the out-of-sequence packets for addition to
the first queue as the holes get filled.
The annotation ring is removed and replaced with a SACK table. The SACK
table has the bits set that correspond exactly to the sequence number of
the packet being acked. The SACK ring is copied when an ACK packet is
being assembled and rotated so that the first ACK is in byte 0.
Flow control handling is altered so that packets that are moved to the
in-sequence queue are hard-ACK'd even before they're consumed - and then
the Rx window size in the ACK packet (rsize) is shrunk down to compensate
(even going to 0 if the window is full).
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/rxrpc/misc.c')
| -rw-r--r-- | net/rxrpc/misc.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/net/rxrpc/misc.c b/net/rxrpc/misc.c index f5f03f27bd6c..056c428d8bf3 100644 --- a/net/rxrpc/misc.c +++ b/net/rxrpc/misc.c @@ -40,10 +40,7 @@ unsigned long rxrpc_idle_ack_delay = HZ / 2; * limit is hit, we should generate an EXCEEDS_WINDOW ACK and discard further * packets. */ -unsigned int rxrpc_rx_window_size = RXRPC_INIT_RX_WINDOW_SIZE; -#if (RXRPC_RXTX_BUFF_SIZE - 1) < RXRPC_INIT_RX_WINDOW_SIZE -#error Need to reduce RXRPC_INIT_RX_WINDOW_SIZE -#endif +unsigned int rxrpc_rx_window_size = 255; /* * Maximum Rx MTU size. This indicates to the sender the size of jumbo packet |