diff options
| author | David Howells <dhowells@redhat.com> | 2022-10-17 08:54:57 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2023-01-31 16:38:09 +0000 |
| commit | af094824f20b454ee23b7b5a860b3ba58f4e6938 (patch) | |
| tree | 10093f83719001b3305ae729270f69470158ad45 /net/rxrpc/sysctl.c | |
| parent | 223f59016fa2b6d01814dc53ace1c146857ba236 (diff) | |
rxrpc: Allow a delay to be injected into packet reception
If CONFIG_AF_RXRPC_DEBUG_RX_DELAY=y, then a delay is injected between
packets and errors being received and them being made available to the
processing code, thereby allowing the RTT to be artificially increased.
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/sysctl.c')
| -rw-r--r-- | net/rxrpc/sysctl.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/net/rxrpc/sysctl.c b/net/rxrpc/sysctl.c index cde3224a5cd2..ecaeb4ecfb58 100644 --- a/net/rxrpc/sysctl.c +++ b/net/rxrpc/sysctl.c @@ -17,6 +17,9 @@ static const unsigned int n_65535 = 65535; static const unsigned int n_max_acks = 255; static const unsigned long one_jiffy = 1; static const unsigned long max_jiffies = MAX_JIFFY_OFFSET; +#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY +static const unsigned long max_500 = 500; +#endif /* * RxRPC operating parameters. @@ -63,6 +66,19 @@ static struct ctl_table rxrpc_sysctl_table[] = { .extra2 = (void *)&max_jiffies, }, + /* Values used in milliseconds */ +#ifdef CONFIG_AF_RXRPC_INJECT_RX_DELAY + { + .procname = "inject_rx_delay", + .data = &rxrpc_inject_rx_delay, + .maxlen = sizeof(unsigned long), + .mode = 0644, + .proc_handler = proc_doulongvec_minmax, + .extra1 = (void *)SYSCTL_LONG_ZERO, + .extra2 = (void *)&max_500, + }, +#endif + /* Non-time values */ { .procname = "reap_client_conns", @@ -109,7 +125,6 @@ static struct ctl_table rxrpc_sysctl_table[] = { .extra1 = (void *)SYSCTL_ONE, .extra2 = (void *)&four, }, - { } }; |