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6f3189f38a
linux/net
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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
..
6lowpan 6lowpan: Remove redundant initialisation. 2023-03-29 08:22:52 +01:00
9p net: 9p: avoid freeing uninit memory in p9pdu_vreadf 2023-12-13 05:44:30 +09:00
802 net: fill in MODULE_DESCRIPTION()s under net/802* 2023-10-28 11:29:28 +01:00
8021q vlan: skip nested type that is not IFLA_VLAN_QOS_MAPPING 2024-01-19 21:25:06 -08:00
appletalk net: remove SOCK_DEBUG leftovers 2023-12-26 20:31:01 +00:00
atm net: fill in MODULE_DESCRIPTION()s for ATM 2024-01-05 08:04:23 -08:00
ax25 net: implement lockless SO_PRIORITY 2023-10-01 19:09:54 +01:00
batman-adv batman-adv: Switch to linux/array_size.h 2023-11-14 08:16:34 +01:00
bluetooth TTY/Serial changes for 6.8-rc1 2024-01-18 11:37:24 -08:00
bpf bpf: treewide: Annotate BPF kfuncs in BTF 2024-01-31 20:40:56 -08:00
bridge netfilter: bridge: replace physindev with physinif in nf_bridge_info 2024-01-17 12:02:49 +01:00
caif net: fill in MODULE_DESCRIPTION()s for CAIF 2024-01-05 08:06:35 -08:00
can Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-12 17:07:34 -07:00
ceph libceph: remove MAX_EXTENTS check for sparse reads 2024-01-15 15:40:50 +01:00
core bpf: treewide: Annotate BPF kfuncs in BTF 2024-01-31 20:40:56 -08:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-01 21:07:46 -07:00
dccp inet_diag: add module pointer to "struct inet_diag_handler" 2024-01-23 15:13:54 +01:00
devlink devlink: extend multicast filtering by port index 2023-12-19 15:31:40 +01:00
dns_resolver Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
dsa net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events 2024-01-11 16:33:52 -08:00
ethernet
ethtool ethtool: netlink: Add missing ethnl_ops_begin/complete 2024-01-18 13:21:06 +01:00
handshake Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-10-26 13:46:28 -07:00
hsr net: fill in MODULE_DESCRIPTION()s for HSR 2024-01-11 16:16:08 -08:00
ieee802154 net: fill in MODULE_DESCRIPTION()s for ieee802154 2024-01-29 12:12:51 +00:00
ife net: sched: ife: fix potential use-after-free 2023-12-15 10:50:18 +00:00
ipv4 bpf: treewide: Annotate BPF kfuncs in BTF 2024-01-31 20:40:56 -08:00
ipv6 bpf-next-for-netdev 2024-01-26 21:08:22 -08:00
iucv iucv: make iucv_bus const 2023-12-29 07:46:38 +00:00
kcm net: kcm: fix direct access to bv_len 2024-01-03 18:37:22 -08:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-08-18 12:44:56 -07:00
l2tp ipv6: annotate data-races around np->ucast_oif 2023-12-11 10:59:17 +00:00
l3mdev
lapb
llc llc: Drop support for ETH_P_TR_802_2. 2024-01-19 21:30:09 -08:00
mac80211 wireless fixes for v6.8-rc2 2024-01-23 08:38:13 -08:00
mac802154 mac802154: Avoid new associations while disassociating 2023-12-15 11:14:57 +01:00
mctp mctp: perform route lookups under a RCU read-side lock 2023-10-10 19:43:22 -07:00
mpls networking: Update to register_net_sysctl_sz 2023-08-15 15:26:18 -07:00
mptcp inet_diag: add module pointer to "struct inet_diag_handler" 2024-01-23 15:13:54 +01:00
ncsi net/ncsi: Add NC-SI 1.2 Get MC MAC Address command 2023-11-18 15:00:51 +00:00
netfilter bpf: treewide: Annotate BPF kfuncs in BTF 2024-01-31 20:40:56 -08:00
netlabel calipso: fix memory leak in netlbl_calipso_add_pass() 2023-12-07 14:23:12 -05:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-01-25 14:20:08 -08:00
netrom net: implement lockless SO_PRIORITY 2023-10-01 19:09:54 +01:00
nfc net: fill in MODULE_DESCRIPTION()s for NFC 2024-01-11 16:16:08 -08:00
nsh net: move gso declarations and functions to their own files 2023-06-10 00:11:41 -07:00
openvswitch net/sched: act_ct: Always fill offloading tuple iifidx 2023-11-08 17:47:08 -08:00
packet sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
phonet sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
psample genetlink: Use internal flags for multicast groups 2023-12-29 08:43:59 +00:00
qrtr net: qrtr: ns: Return 0 if server port is not present 2024-01-01 18:41:29 +00:00
rds net/rds: Fix UBSAN: array-index-out-of-bounds in rds_cmsg_recv 2024-01-22 11:24:00 +00:00
rfkill Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-12-21 22:17:23 +01:00
rose net/rose: fix races in rose_kill_by_device() 2023-12-15 11:59:53 +00:00
rxrpc rxrpc: Fix use of Don't Fragment flag 2024-01-11 16:41:41 -08:00
sched taprio: validate TCA_TAPRIO_ATTR_FLAGS through policy instead of open-coding 2024-01-29 12:08:42 +00:00
sctp inet_diag: add module pointer to "struct inet_diag_handler" 2024-01-23 15:13:54 +01:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-01-25 14:20:08 -08:00
strparser
sunrpc nfsd-6.8 fixes: 2024-01-25 10:26:52 -08:00
switchdev net: switchdev: Add a helper to replay objects on a bridge port 2023-07-21 08:54:03 +01:00
tipc tipc: node: remove Excess struct member kernel-doc warnings 2024-01-24 17:48:29 -08:00
tls net: tls, fix WARNIING in __sk_msg_free 2024-01-14 12:17:14 +00:00
unix af_unix: Try to run GC async. 2024-01-26 20:34:25 -08:00
vmw_vsock sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
wireless wireless fixes for v6.8-rc2 2024-01-23 08:38:13 -08:00
x25 net: remove SOCK_DEBUG leftovers 2023-12-26 20:31:01 +00:00
xdp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-01-25 14:20:08 -08:00
xfrm bpf: treewide: Annotate BPF kfuncs in BTF 2024-01-31 20:40:56 -08:00
compat.c file: stop exposing receive_fd_user() 2023-12-12 14:24:14 +01:00
devres.c
Kconfig bpfilter: remove bpfilter 2024-01-04 10:23:10 -08:00
Kconfig.debug
Makefile bpfilter: remove bpfilter 2024-01-04 10:23:10 -08:00
socket.c vfs-6.8.iov_iter 2024-01-08 11:43:04 -08:00
sysctl_net.c sysctl: Add size to register_net_sysctl function 2023-08-15 15:26:17 -07:00