From: David Gibson <david@gibson.dropbear.id.au>
To: passt-dev@passt.top, Stefano Brivio <sbrivio@redhat.com>
Cc: jlesev@gmail.com, David Gibson <david@gibson.dropbear.id.au>
Subject: [PATCH 0/8] Fix a number of bugs with handling of TCP packets from tap
Date: Fri, 8 Sep 2023 11:49:45 +1000 [thread overview]
Message-ID: <20230908014953.822952-1-david@gibson.dropbear.id.au> (raw)
In the course of investigating bug 68, I discovered a number of pretty
serious bugs in how we handle various cases in tcp_tap_handler() and
tcp_data_from_tap(). This series fixes a number of them.
Note that while I'm pretty sure the bugs fixed here are real, I
haven't yet positively traced how they lead to the symptoms in bug 68
- I'm still waiting on the results from some special instrumentation
to track that down.
Link: https://bugs.passt.top/show_bug.cgi?id=68
David Gibson (8):
tcp, tap: Correctly advance through packets in tcp_tap_handler()
udp, tap: Correctly advance through packets in udp_tap_handler()
tcp: Remove some redundant packet_get() operations
tcp: Never hash match closed connections
tcp: Return consumed packet count from tcp_data_from_tap()
tcp: Correctly handle RST followed rapidly by SYN
tcp: Consolidate paths where we initiate reset on tap interface
tcp: Correct handling of FIN,ACK followed by SYN
tap.c | 29 ++++++++++--------
tcp.c | 98 +++++++++++++++++++++++++++++++----------------------------
tcp.h | 2 +-
udp.c | 15 ++++-----
udp.h | 2 +-
5 files changed, 78 insertions(+), 68 deletions(-)
--
2.41.0
next reply other threads:[~2023-09-08 1:50 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-08 1:49 David Gibson [this message]
2023-09-08 1:49 ` [PATCH 1/8] tcp, tap: Correctly advance through packets in tcp_tap_handler() David Gibson
2023-09-08 1:49 ` [PATCH 2/8] udp, tap: Correctly advance through packets in udp_tap_handler() David Gibson
2023-09-08 1:49 ` [PATCH 3/8] tcp: Remove some redundant packet_get() operations David Gibson
2023-09-08 1:49 ` [PATCH 4/8] tcp: Never hash match closed connections David Gibson
2023-09-08 1:49 ` [PATCH 5/8] tcp: Return consumed packet count from tcp_data_from_tap() David Gibson
2023-09-08 1:49 ` [PATCH 6/8] tcp: Correctly handle RST followed rapidly by SYN David Gibson
2023-09-08 1:49 ` [PATCH 7/8] tcp: Consolidate paths where we initiate reset on tap interface David Gibson
2023-09-08 1:49 ` [PATCH 8/8] tcp: Correct handling of FIN,ACK followed by SYN David Gibson
2023-09-08 15:27 ` [PATCH 0/8] Fix a number of bugs with handling of TCP packets from tap Stefano Brivio
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