This implements the helper skb_adjust_room() for BPF_SKS_BK_STREAM_VERDICT
programs so we can push/pop headers from the data on recieve. The
obvious use case is to pop TLS headers of kTLS packets.
The first patch implements the helper and the second updates test_sockmap
to use it removing some case handling we had to do earlier to account for
the TLS headers in the kTLS case.
I have a couple more series to flush off my stack then I'll work on
modernizing the test_sockmap tests themselves. It was created before
global data and a few other nice things so its a bit more verbose
than necessary.
Thanks,
John
---
John Fastabend (2):
bpf, sockmap: add skb_adjust_room to pop bytes off ingress payload
bpf, sockmap: update selftests to use skb_adjust_room
net/core/filter.c | 51 ++++++++++++++++++++
.../selftests/bpf/progs/test_sockmap_kern.h | 34 ++++++++++---
tools/testing/selftests/bpf/test_sockmap.c | 27 ++---------
3 files changed, 82 insertions(+), 30 deletions(-)
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