From: Cong Wang <cong.wang@xxxxxxxxxxxxx> This is the last patchset of the original large patchset. In the previous patchset, a new BPF sockmap program BPF_SK_SKB_VERDICT was introduced and UDP began to support it too. In this patchset, we add BPF_SK_SKB_VERDICT support to Unix datagram socket, so that we can finally splice Unix datagram socket and UDP socket. Please check each patch description for more details. To see the big picture, the previous patchsets are available here: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=1e0ab70778bd86a90de438cc5e1535c115a7c396 https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=89d69c5d0fbcabd8656459bc8b1a476d6f1efee4 and this patchset is available here: https://github.com/congwang/linux/tree/sockmap3 --- v5: lift socket state check for dgram remove ->unhash() case add retries for EAGAIN in all test cases remove an unused parameter of __unix_dgram_recvmsg() rebase on the latest bpf-next v4: fix af_unix disconnect case add unix_unhash() split out two small patches reduce u->iolock critical section remove an unused parameter of __unix_dgram_recvmsg() v3: fix Kconfig dependency make unix_read_sock() static fix a UAF in unix_release() add a missing header unix_bpf.c v2: separate out from the original large patchset rebase to the latest bpf-next clean up unix_read_sock() export sock_map_close() factor out some helpers in selftests for code reuse Cong Wang (11): sock_map: relax config dependency to CONFIG_NET sock_map: lift socket state restriction for datagram sockets af_unix: implement ->read_sock() for sockmap af_unix: set TCP_ESTABLISHED for datagram sockets too af_unix: add a dummy ->close() for sockmap af_unix: implement ->psock_update_sk_prot() af_unix: implement unix_dgram_bpf_recvmsg() selftests/bpf: factor out udp_socketpair() selftests/bpf: factor out add_to_sockmap() selftests/bpf: add a test case for unix sockmap selftests/bpf: add test cases for redirection between udp and unix MAINTAINERS | 1 + include/linux/bpf.h | 38 +- include/net/af_unix.h | 12 + kernel/bpf/Kconfig | 2 +- net/core/Makefile | 2 - net/core/sock_map.c | 22 +- net/ipv4/udp_bpf.c | 1 - net/unix/Makefile | 1 + net/unix/af_unix.c | 85 +++- net/unix/unix_bpf.c | 122 ++++++ .../selftests/bpf/prog_tests/sockmap_listen.c | 406 ++++++++++++++---- 11 files changed, 564 insertions(+), 128 deletions(-) create mode 100644 net/unix/unix_bpf.c -- 2.27.0
