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authorLiangxing Wang <liangxing.wang@arm.com>2022-05-13 04:24:19 +0000
committerFlorin Coras <florin.coras@gmail.com>2022-06-10 18:11:58 +0000
commit2211277f3af5a6f50fedb3c6ccf65d4e96b1192a (patch)
treeee7c34f7ea5f952c7f1bdf97246f91ac5b44b078 /build/external
parent0d5f1a6c5449092ef4503e57e1e68d0032bc67ef (diff)
vcl: fix iperf3 server crash issue when it runs over vpp host stack.
Issue: Let iperf3 server run via ldp and vcl on top of vpp's host stack. If iperf3 client connects this iperf3 server with tcp MSS setting option, iperf3 server will always crash. Root cause: When MSS option is specified by iperf3 client, iperf3 server will recreate the listening socket firstly, then call setsockopt() to set MSS immediately. Iperf3 code can be referred here: https://github.com/esnet/iperf/blob/58332f8154e2140e40a6e0ea060a418138291718/src/iperf_tcp.c#L186. However, in vcl layer vpp_evt_q of this recreated session is not allocated yet. So iperf3 server crashes with vpp_evt_q null pointer access. Fix: Add session vpp_evt_q null pointer check in vcl_session_transport_attr(). Add a vcl test case for this MSS option scenario. Type: fix Signed-off-by: Liangxing Wang <liangxing.wang@arm.com> Change-Id: I2863bd0cffbe6e60108ab333f97c00530c006ba7
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