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Diffstat (limited to 'Documentation/networking/rxrpc.txt')
| -rw-r--r-- | Documentation/networking/rxrpc.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/networking/rxrpc.txt b/Documentation/networking/rxrpc.txt index 1fb5c553aedd..b5407163d53b 100644 --- a/Documentation/networking/rxrpc.txt +++ b/Documentation/networking/rxrpc.txt @@ -280,6 +280,18 @@ Interaction with the user of the RxRPC socket: nominated by a socket option. +Notes on sendmsg: + + (*) MSG_WAITALL can be set to tell sendmsg to ignore signals if the peer is + making progress at accepting packets within a reasonable time such that we + manage to queue up all the data for transmission. This requires the + client to accept at least one packet per 2*RTT time period. + + If this isn't set, sendmsg() will return immediately, either returning + EINTR/ERESTARTSYS if nothing was consumed or returning the amount of data + consumed. + + Notes on recvmsg: (*) If there's a sequence of data messages belonging to a particular call on |