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authorDavid Howells <dhowells@redhat.com>2019-05-09 08:21:21 +0100
committerDavid Howells <dhowells@redhat.com>2019-05-16 16:25:20 +0100
commitb960a34b73e4c1c972623bc2076e24b97588d09e (patch)
treeb7fafd6110ffa1aed594d55097755eea65da5d8d /net/rxrpc/ar-internal.h
parent0ab4c9594812c4bc5606daf0677ae304bf7ec8c8 (diff)
downloadlinux-stericsson-b960a34b73e4c1c972623bc2076e24b97588d09e.tar.gz
rxrpc: Allow the kernel to mark a call as being non-interruptible
Allow kernel services using AF_RXRPC to indicate that a call should be non-interruptible. This allows kafs to make things like lock-extension and writeback data storage calls non-interruptible. If this is set, signals will be ignored for operations on that call where possible - such as waiting to get a call channel on an rxrpc connection. It doesn't prevent UDP sendmsg from being interrupted, but that will be handled by packet retransmission. rxrpc_kernel_recv_data() isn't affected by this since that never waits, preferring instead to return -EAGAIN and leave the waiting to the caller. Userspace initiated calls can't be set to be uninterruptible at this time. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'net/rxrpc/ar-internal.h')
-rw-r--r--net/rxrpc/ar-internal.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index 062ca9dc29b8..07fc1dfa4878 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -482,6 +482,7 @@ enum rxrpc_call_flag {
RXRPC_CALL_BEGAN_RX_TIMER, /* We began the expect_rx_by timer */
RXRPC_CALL_RX_HEARD, /* The peer responded at least once to this call */
RXRPC_CALL_RX_UNDERRUN, /* Got data underrun */
+ RXRPC_CALL_IS_INTR, /* The call is interruptible */
};
/*
@@ -711,6 +712,7 @@ struct rxrpc_call_params {
u32 normal; /* Max time since last call packet (msec) */
} timeouts;
u8 nr_timeouts; /* Number of timeouts specified */
+ bool intr; /* The call is interruptible */
};
struct rxrpc_send_params {