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7f0a838254
linux-next/net
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Andrii Nakryiko 7f0a838254 bpf, xdp: Maintain info on attached XDP BPF programs in net_device 
Instead of delegating to drivers, maintain information about which BPF
programs are attached in which XDP modes (generic/skb, driver, or hardware)
locally in net_device. This effectively obsoletes XDP_QUERY_PROG command.

Such re-organization simplifies existing code already. But it also allows to
further add bpf_link-based XDP attachments without drivers having to know
about any of this at all, which seems like a good setup.
XDP_SETUP_PROG/XDP_SETUP_PROG_HW are just low-level commands to driver to
install/uninstall active BPF program. All the higher-level concerns about
prog/link interaction will be contained within generic driver-agnostic logic.

All the XDP_QUERY_PROG calls to driver in dev_xdp_uninstall() were removed.
It's not clear for me why dev_xdp_uninstall() were passing previous prog_flags
when resetting installed programs. That seems unnecessary, plus most drivers
don't populate prog_flags anyways. Having XDP_SETUP_PROG vs XDP_SETUP_PROG_HW
should be enough of an indicator of what is required of driver to correctly
reset active BPF program. dev_xdp_uninstall() is also generalized as an
iteration over all three supported mode.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200722064603.3350758-3-andriin@fb.com
2020-07-25 20:37:02 -07:00
..
6lowpan treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
9p net: 9p: kerneldoc fixes 2020-07-13 17:20:39 -07:00
802
8021q net: get rid of lockdep_set_class_and_subclass() 2020-06-28 21:37:23 -07:00
appletalk net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
atm net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
batman-adv batman-adv: Introduce a configurable per interface hop penalty 2020-06-26 10:37:11 +02:00
bluetooth net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
bpf bpf: Add tests for PTR_TO_BTF_ID vs. null comparison 2020-06-30 22:21:29 +02:00
bpfilter bpfilter: switch bpfilter_ip_set_sockopt to sockptr_t 2020-07-24 15:41:54 -07:00
bridge netfilter: switch nf_setsockopt to sockptr_t 2020-07-24 15:41:54 -07:00
caif net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
can net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
ceph libceph: don't omit used_replica in target_copy() 2020-06-16 16:02:08 +02:00
core bpf, xdp: Maintain info on attached XDP BPF programs in net_device 2020-07-25 20:37:02 -07:00
dcb dcb_doit: remove redundant skb check 2020-06-23 20:27:09 -07:00
dccp net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
decnet net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
dns_resolver docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
dsa net: dsa: stop overriding master's ndo_get_phys_port_name 2020-07-23 15:14:58 -07:00
ethernet net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
ethtool Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-11 00:46:00 -07:00
hsr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
ieee802154 net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
ife
ipv4 bpf: Refactor to provide aux info to bpf_iter_init_seq_priv_t 2020-07-25 20:16:32 -07:00
ipv6 bpf: Refactor bpf_iter_reg to have separate seq_info member 2020-07-25 20:16:32 -07:00
iucv net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
kcm net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
key net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
l2tp l2tp: WARN_ON rather than BUG_ON in l2tp_session_free 2020-07-24 17:19:14 -07:00
l3mdev l3mdev: add infrastructure for table to VRF mapping 2020-06-20 17:22:22 -07:00
lapb treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
llc net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
mac80211 net: mac80211: kerneldoc fixes 2020-07-13 17:20:39 -07:00
mac802154 treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
mpls treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
mptcp net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
ncsi net/ncsi: use eth_zero_addr() to clear mac address 2020-07-23 11:49:41 -07:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
netlabel net: netlabel: kerneldoc fixes 2020-07-13 17:20:40 -07:00
netlink bpf: Refactor bpf_iter_reg to have separate seq_info member 2020-07-25 20:16:32 -07:00
netrom net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
nsh treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
openvswitch net: openvswitch: fixes potential deadlock in dp cleanup code 2020-07-24 16:58:38 -07:00
packet net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
phonet net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
psample net: psample: fix build error when CONFIG_INET is not enabled 2020-05-23 16:36:05 -07:00
qrtr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
rds net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
rfkill
rose net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
strparser
sunrpc xprtrdma: fix incorrect header size calculations 2020-07-15 13:01:01 -04:00
switchdev net: switchdev: kerneldoc fixes 2020-07-13 17:20:40 -07:00
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
tls net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
unix net: make ->{get,set}sockopt in proto_ops optional 2020-07-19 18:16:41 -07:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
wimax
wireless net: wireless: kerneldoc fixes 2020-07-13 17:20:40 -07:00
x25 net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
xdp net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
xfrm net/xfrm: switch xfrm_user_policy to sockptr_t 2020-07-24 15:41:53 -07:00
compat.c net: remove compat_sys_{get,set}sockopt 2020-07-19 18:16:40 -07:00
devres.c net: devres: rename the release callback of devm_register_netdev() 2020-06-30 15:57:34 -07:00
Kconfig net: ethtool: Remove PHYLIB direct dependency 2020-07-07 15:41:05 -07:00
Makefile net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
socket.c net: optimize the sockptr_t for unified kernel/user address spaces 2020-07-24 15:41:54 -07:00
sysctl_net.c