This adds support for the MSG_PEEK flag when redirecting into an
ingress psock sk_msg queue.
The first patch adds some base support to the helpers, then the
feature, and finally we add an option for the test suite to do
a duplicate MSG_PEEK call on every recv to test the feature.
With duplicate MSG_PEEK call all tests continue to PASS.
---
John Fastabend (3):
bpf: skmsg, improve sk_msg_used_element to work in cork context
bpf: sockmap, support for msg_peek in sk_msg with redirect ingress
bpf: sockmap, add msg_peek tests to test_sockmap
include/linux/skmsg.h | 13 +-
include/net/tcp.h | 2
net/ipv4/tcp_bpf.c | 42 +++++--
net/tls/tls_sw.c | 3 -
tools/testing/selftests/bpf/test_sockmap.c | 167 +++++++++++++++++++---------
5 files changed, 153 insertions(+), 74 deletions(-)
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