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6f3189f38a
linux/net/core
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Daniel Xu 6f3189f38a bpf: treewide: Annotate BPF kfuncs in BTF 
This commit marks kfuncs as such inside the .BTF_ids section. The upshot
of these annotations is that we'll be able to automatically generate
kfunc prototypes for downstream users. The process is as follows:

1. In source, use BTF_KFUNCS_START/END macro pair to mark kfuncs
2. During build, pahole injects into BTF a "bpf_kfunc" BTF_DECL_TAG for
   each function inside BTF_KFUNCS sets
3. At runtime, vmlinux or module BTF is made available in sysfs
4. At runtime, bpftool (or similar) can look at provided BTF and
   generate appropriate prototypes for functions with "bpf_kfunc" tag

To ensure future kfunc are similarly tagged, we now also return error
inside kfunc registration for untagged kfuncs. For vmlinux kfuncs,
we also WARN(), as initcall machinery does not handle errors.

Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
Acked-by: Benjamin Tissoires <bentiss@kernel.org>
Link: https://lore.kernel.org/r/e55150ceecbf0a5d961e608941165c0bee7bc943.1706491398.git.dxu@dxuuu.xyz
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-01-31 20:40:56 -08:00
..
bpf_sk_storage.c net: Namespace-ify sysctl_optmem_max 2023-12-15 11:01:27 +00:00
datagram.c iov_iter, net: Move hash_and_copy_to_iter() to net/ 2023-10-09 09:35:14 +02:00
dev_addr_lists_test.c net: fill in MODULE_DESCRIPTION()s under net/core 2023-10-28 11:29:27 +01:00
dev_addr_lists.c net: extract a few internals from netdevice.h 2022-04-07 20:32:09 -07:00
dev_ioctl.c net: partial revert of the "Make timestamping selectable: series 2023-11-18 18:42:37 -08:00
dev.c net: free altname using an RCU callback 2024-01-29 14:40:38 +00:00
dev.h net: free altname using an RCU callback 2024-01-29 14:40:38 +00:00
drop_monitor.c genetlink: Use internal flags for multicast groups 2023-12-29 08:43:59 +00:00
dst_cache.c
dst.c net: dst: remove unnecessary input parameter in dst_alloc and dst_init 2023-09-12 11:42:25 +02:00
failover.c net: failover: use IFF_NO_ADDRCONF flag to prevent ipv6 addrconf 2022-12-12 15:18:25 -08:00
fib_notifier.c
fib_rules.c fib: rules: remove repeated assignment in fib_nl2rule 2024-01-07 15:16:19 +00:00
filter.c bpf: treewide: Annotate BPF kfuncs in BTF 2024-01-31 20:40:56 -08:00
flow_dissector.c net/core: Fix ETH_P_1588 flow dissector 2023-09-15 10:40:04 +01:00
flow_offload.c tc: flower: Enable offload support IPSEC SPI field. 2023-08-02 10:09:32 +01:00
gen_estimator.c treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
gen_stats.c net: Remove the obsolte u64_stats_fetch_*_irq() users (net). 2022-10-28 20:13:54 -07:00
gro_cells.c net: drop the weight argument from netif_napi_add 2022-09-28 18:57:14 -07:00
gro.c gro: move the tc_ext comparison to a helper 2023-06-18 18:08:35 +01:00
gso_test.c net: gso_test: support CONFIG_MAX_SKB_FRAGS up to 45 2023-11-13 11:04:38 +00:00
gso.c net: move gso declarations and functions to their own files 2023-06-10 00:11:41 -07:00
hwbm.c
link_watch.c Revert "net: rtnetlink: remove local list in __linkwatch_run_queue()" 2023-12-11 10:57:16 +00:00
lwt_bpf.c lwt: Fix return values of BPF xmit ops 2023-08-18 16:05:26 +02:00
lwtunnel.c xfrm: lwtunnel: squelch kernel warning in case XFRM encap type is not available 2022-10-12 10:45:51 +02:00
Makefile net: page_pool: id the page pools 2023-11-28 15:48:39 +01:00
neighbour.c neighbour: Don't let neigh_forced_gc() disable preemption for long 2023-12-08 10:37:43 +00:00
net_namespace.c net: Namespace-ify sysctl_optmem_max 2023-12-15 11:01:27 +00:00
net-procfs.c net-sysfs: display two backlog queue len separately 2023-03-22 12:03:52 +01:00
net-sysfs.c net: sysfs: fix locking in carrier read 2023-12-08 16:10:17 -08:00
net-sysfs.h
net-traces.c udp6: add a missing call into udp_fail_queue_rcv_skb tracepoint 2023-07-07 09:16:52 +01:00
netclassid_cgroup.c cgroup, netclassid: on modifying netclassid in cgroup, only consider the main process. 2023-10-16 16:36:53 -07:00
netdev-genl-gen.c netdev-genl: spec: Extend netdev netlink spec in YAML for NAPI 2023-12-04 18:04:05 -08:00
netdev-genl-gen.h netdev-genl: spec: Extend netdev netlink spec in YAML for NAPI 2023-12-04 18:04:05 -08:00
netdev-genl.c netdev-genl: Add PID for the NAPI thread 2023-12-04 18:04:06 -08:00
netevent.c
netpoll.c netpoll: allocate netdev tracker right away 2023-06-15 08:21:11 +01:00
netprio_cgroup.c
of_net.c net: Explicitly include correct DT includes 2023-07-27 20:33:16 -07:00
page_pool_priv.h net: page_pool: report when page pool was destroyed 2023-11-28 15:48:39 +01:00
page_pool_user.c net: page_pool: fix general protection fault in page_pool_unlist 2023-11-30 10:14:58 -08:00
page_pool.c page_pool: halve BIAS_MAX for multiple user references of a fragment 2023-12-17 10:56:33 +00:00
pktgen.c net: pktgen: Use wait_event_freezable_timeout() for freezable kthread 2023-12-27 14:34:52 +00:00
ptp_classifier.c ptp: Add generic PTP is_sync() function 2022-03-07 11:31:34 +00:00
request_sock.c tcp: make sure init the accept_queue's spinlocks once 2024-01-19 21:13:25 -08:00
rtnetlink.c Revert "net: rtnetlink: Enslave device before bringing it up" 2024-01-11 16:47:40 -08:00
scm.c af_unix: Try to run GC async. 2024-01-26 20:34:25 -08:00
secure_seq.c tcp: Fix data-races around sysctl knobs related to SYN option. 2022-07-20 10:14:49 +01:00
selftests.c net: fill in MODULE_DESCRIPTION()s under net/core 2023-10-28 11:29:27 +01:00
skbuff.c Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
skmsg.c bpf, sockmap: af_unix stream sockets need to hold ref for pair sock 2023-11-30 00:25:16 +01:00
sock_destructor.h
sock_diag.c sock_diag: remove sock_diag_mutex 2024-01-23 15:13:55 +01:00
sock_map.c bpf: syzkaller found null ptr deref in unix_bpf proto add 2023-12-13 16:32:28 -08:00
sock_reuseport.c soreuseport: Fix socket selection for SO_INCOMING_CPU. 2022-10-25 11:35:16 +02:00
sock.c bpf-next-for-netdev 2024-01-26 21:08:22 -08:00
stream.c net: Return error from sk_stream_wait_connect() if sk_wait_event() fails 2023-12-15 10:48:51 +00:00
sysctl_net_core.c net: Namespace-ify sysctl_optmem_max 2023-12-15 11:01:27 +00:00
timestamping.c net: partial revert of the "Make timestamping selectable: series 2023-11-18 18:42:37 -08:00
tso.c net: tso: inline tso_count_descs() 2022-12-12 15:04:39 -08:00
utils.c net: core: inet[46]_pton strlen len types 2022-11-01 21:14:39 -07:00
xdp.c bpf: treewide: Annotate BPF kfuncs in BTF 2024-01-31 20:40:56 -08:00