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authorDavid Howells <dhowells@redhat.com>2018-05-10 23:26:00 +0100
committerDavid Howells <dhowells@redhat.com>2018-05-10 23:26:00 +0100
commitc54e43d752c7187595c8c62a231e0b0d53c7fded (patch)
tree3e813d2af3416daf069285dbaefced6e2cc89982 /net/rxrpc
parent4a026da91caaa36004a53a844dd00959370ea8fc (diff)
downloadlinux-c54e43d752c7187595c8c62a231e0b0d53c7fded.tar.bz2
rxrpc: Fix missing start of call timeout
The expect_rx_by call timeout is supposed to be set when a call is started to indicate that we need to receive a packet by that point. This is currently put back every time we receive a packet, but it isn't started when we first send a packet. Without this, the call may wait forever if the server doesn't deign to reply. Fix this by setting the timeout upon a successful UDP sendmsg call for the first DATA packet. The timeout is initiated only for initial transmission and not for subsequent retries as we don't want the retry mechanism to extend the timeout indefinitely. Fixes: a158bdd3247b ("rxrpc: Fix call timeouts") Reported-by: Marc Dionne <marc.dionne@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc')
-rw-r--r--net/rxrpc/ar-internal.h1
-rw-r--r--net/rxrpc/input.c2
-rw-r--r--net/rxrpc/output.c11
-rw-r--r--net/rxrpc/sendmsg.c10
4 files changed, 23 insertions, 1 deletions
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index 90d7079e0aa9..19975d2ca9a2 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -476,6 +476,7 @@ enum rxrpc_call_flag {
RXRPC_CALL_SEND_PING, /* A ping will need to be sent */
RXRPC_CALL_PINGING, /* Ping in process */
RXRPC_CALL_RETRANS_TIMEOUT, /* Retransmission due to timeout occurred */
+ RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */
};
/*
diff --git a/net/rxrpc/input.c b/net/rxrpc/input.c
index 0410d2277ca2..b5fd6381313d 100644
--- a/net/rxrpc/input.c
+++ b/net/rxrpc/input.c
@@ -971,7 +971,7 @@ static void rxrpc_input_call_packet(struct rxrpc_call *call,
if (timo) {
unsigned long now = jiffies, expect_rx_by;
- expect_rx_by = jiffies + timo;
+ expect_rx_by = now + timo;
WRITE_ONCE(call->expect_rx_by, expect_rx_by);
rxrpc_reduce_call_timer(call, expect_rx_by, now,
rxrpc_timer_set_for_normal);
diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index 7f1fc04775b3..6b9d27f0d7ec 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -414,6 +414,17 @@ done:
rxrpc_timer_set_for_lost_ack);
}
}
+
+ if (sp->hdr.seq == 1 &&
+ !test_and_set_bit(RXRPC_CALL_BEGAN_RX_TIMER,
+ &call->flags)) {
+ unsigned long nowj = jiffies, expect_rx_by;
+
+ expect_rx_by = nowj + call->next_rx_timo;
+ WRITE_ONCE(call->expect_rx_by, expect_rx_by);
+ rxrpc_reduce_call_timer(call, expect_rx_by, nowj,
+ rxrpc_timer_set_for_normal);
+ }
}
rxrpc_set_keepalive(call);
diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c
index 206e802ccbdc..be01f9c5d963 100644
--- a/net/rxrpc/sendmsg.c
+++ b/net/rxrpc/sendmsg.c
@@ -223,6 +223,15 @@ static void rxrpc_queue_packet(struct rxrpc_sock *rx, struct rxrpc_call *call,
ret = rxrpc_send_data_packet(call, skb, false);
if (ret < 0) {
+ switch (ret) {
+ case -ENETUNREACH:
+ case -EHOSTUNREACH:
+ case -ECONNREFUSED:
+ rxrpc_set_call_completion(call,
+ RXRPC_CALL_LOCAL_ERROR,
+ 0, ret);
+ goto out;
+ }
_debug("need instant resend %d", ret);
rxrpc_instant_resend(call, ix);
} else {
@@ -241,6 +250,7 @@ static void rxrpc_queue_packet(struct rxrpc_sock *rx, struct rxrpc_call *call,
rxrpc_timer_set_for_send);
}
+out:
rxrpc_free_skb(skb, rxrpc_skb_tx_freed);
_leave("");
}