Messages in this thread | | | From | Eric Dumazet <> | Subject | [PATCH net-next 0/2] tcp: mmap: rework zerocopy receive | Date | Tue, 24 Apr 2018 22:27:20 -0700 |
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syzbot reported a lockdep issue caused by tcp mmap() support.
I implemented Andy Lutomirski nice suggestions to resolve the issue and increase scalability as well.
First patch is adding a new setsockopt() operation and changes mmap() behavior.
Second patch changes tcp_mmap reference program.
Eric Dumazet (2): tcp: add TCP_ZEROCOPY_RECEIVE support for zerocopy receive selftests: net: tcp_mmap must use TCP_ZEROCOPY_RECEIVE
include/uapi/linux/tcp.h | 8 ++ net/ipv4/tcp.c | 186 +++++++++++++------------ tools/testing/selftests/net/tcp_mmap.c | 63 +++++---- 3 files changed, 139 insertions(+), 118 deletions(-)
-- 2.17.0.484.g0c8726318c-goog
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