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| author | Willem de Bruijn <willemb@google.com> | 2015-01-30 13:29:31 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-02 18:46:51 -0800 |
| commit | 49ca0d8bfaf3bc46d5eef60ce67b00eb195bd392 (patch) | |
| tree | d2f55a32923f6d91fcb2e0d0e0b6d2d4eb6f9abd /net/rxrpc/ar-error.c | |
| parent | 9766e97af1b901ffbb36fcc648e50626d926bb24 (diff) | |
| download | blackbird-op-linux-49ca0d8bfaf3bc46d5eef60ce67b00eb195bd392.tar.gz blackbird-op-linux-49ca0d8bfaf3bc46d5eef60ce67b00eb195bd392.zip | |
net-timestamp: no-payload option
Add timestamping option SOF_TIMESTAMPING_OPT_TSONLY. For transmit
timestamps, this loops timestamps on top of empty packets.
Doing so reduces the pressure on SO_RCVBUF. Payload inspection and
cmsg reception (aside from timestamps) are no longer possible. This
works together with a follow on patch that allows administrators to
only allow tx timestamping if it does not loop payload or metadata.
Signed-off-by: Willem de Bruijn <willemb@google.com>
----
Changes (rfc -> v1)
- add documentation
- remove unnecessary skb->len test (thanks to Richard Cochran)
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rxrpc/ar-error.c')
| -rw-r--r-- | net/rxrpc/ar-error.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/rxrpc/ar-error.c b/net/rxrpc/ar-error.c index 74c0fcd36838..5394b6be46ec 100644 --- a/net/rxrpc/ar-error.c +++ b/net/rxrpc/ar-error.c @@ -42,6 +42,11 @@ void rxrpc_UDP_error_report(struct sock *sk) _leave("UDP socket errqueue empty"); return; } + if (!skb->len) { + _leave("UDP empty message"); + kfree_skb(skb); + return; + } rxrpc_new_skb(skb); |
