Merge branch 'bpf-reject-tcp_nodelay-in-tcp-header-option'

KaFai Wan says:

====================
bpf: Reject TCP_NODELAY in TCP header option

This small patchset is about avoid infinite recursion in TCP header option callbacks
and bpf-tcp-cc callbacks via TCP_NODELAY setsockopt.

v4:
 - Fix the test case for TCP header option callbacks (Martin and Jiayuan)
 - Reject TCP_NODELAY in bpf-tcp-cc callbacks (AI and Martin)
 - Add a test case for bpf-tcp-cc

v3:
 - Remove CONFIG_INET check and add comment (Martin and Jiayuan)
 - Fix the test case (Martin)
 https://lore.kernel.org/bpf/20260417092035.2299913-1-kafai.wan@linux.dev/

v2:
 - Reject TCP_NODELAY in bpf_sock_ops_setsockopt() (AI and Martin)
 https://lore.kernel.org/bpf/20260416112308.1820332-1-kafai.wan@linux.dev/

v1:
 https://lore.kernel.org/bpf/20260414112310.1285783-1-kafai.wan@linux.dev/
====================

Link: https://patch.msgid.link/20260421155804.135786-1-kafai.wan@linux.dev
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>