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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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7e4d784f58
To preserve the atomicity, hold the lock while applying multiple attributes. The major issue with a full conversion to the instance lock are software nesting devices (bonding/team/vrf/etc). Those devices call into the core stack for their lower (potentially real hw) devices. To avoid explicitly wrapping all those places into instance lock/unlock, introduce new API boundaries: - (some) existing dev_xxx calls are now considered "external" (to drivers) APIs and they transparently grab the instance lock if needed (dev_api.c) - new netif_xxx calls are internal core stack API (naming is sketchy, I've tried netdev_xxx_locked per Jakub's suggestion, but it feels a bit verbose; but happy to get back to this naming scheme if this is the preference) This avoids touching most of the existing ioctl/sysfs/drivers paths. Note the special handling of ndo_xxx_slave operations: I exploit the fact that none of the drivers that call these functions need/use instance lock. At the same time, they use dev_xxx APIs, so the lower device has to be unlocked. Changes in unregister_netdevice_many_notify (to protect dev->state with instance lock) trigger lockdep - the loop over close_list (mostly from cleanup_net) introduces spurious ordering issues. netdev_lock_cmp_fn has a justification on why it's ok to suppress for now. Cc: Saeed Mahameed <saeed@kernel.org> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20250305163732.2766420-7-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
50 lines
1.8 KiB
Makefile
50 lines
1.8 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the Linux networking core.
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#
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obj-y := sock.o request_sock.o skbuff.o datagram.o stream.o scm.o \
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gen_stats.o gen_estimator.o net_namespace.o secure_seq.o \
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flow_dissector.o
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obj-$(CONFIG_SYSCTL) += sysctl_net_core.o
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obj-y += dev.o dev_api.o dev_addr_lists.o dst.o netevent.o \
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neighbour.o rtnetlink.o utils.o link_watch.o filter.o \
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sock_diag.o dev_ioctl.o tso.o sock_reuseport.o \
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fib_notifier.o xdp.o flow_offload.o gro.o \
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netdev-genl.o netdev-genl-gen.o gso.o
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obj-$(CONFIG_NETDEV_ADDR_LIST_TEST) += dev_addr_lists_test.o
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obj-y += net-sysfs.o
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obj-y += hotdata.o
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obj-y += netdev_rx_queue.o
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obj-$(CONFIG_PAGE_POOL) += page_pool.o page_pool_user.o
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obj-$(CONFIG_PROC_FS) += net-procfs.o
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obj-$(CONFIG_NET_PKTGEN) += pktgen.o
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obj-$(CONFIG_NETPOLL) += netpoll.o
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obj-$(CONFIG_FIB_RULES) += fib_rules.o
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obj-$(CONFIG_TRACEPOINTS) += net-traces.o
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obj-$(CONFIG_NET_DROP_MONITOR) += drop_monitor.o
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obj-$(CONFIG_NET_IEEE8021Q_HELPERS) += ieee8021q_helpers.o
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obj-$(CONFIG_NET_SELFTESTS) += selftests.o
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obj-$(CONFIG_NETWORK_PHY_TIMESTAMPING) += timestamping.o
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obj-$(CONFIG_NET_PTP_CLASSIFY) += ptp_classifier.o
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obj-$(CONFIG_CGROUP_NET_PRIO) += netprio_cgroup.o
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obj-$(CONFIG_CGROUP_NET_CLASSID) += netclassid_cgroup.o
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obj-$(CONFIG_LWTUNNEL) += lwtunnel.o
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obj-$(CONFIG_LWTUNNEL_BPF) += lwt_bpf.o
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obj-$(CONFIG_DST_CACHE) += dst_cache.o
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obj-$(CONFIG_HWBM) += hwbm.o
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obj-$(CONFIG_GRO_CELLS) += gro_cells.o
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obj-$(CONFIG_FAILOVER) += failover.o
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obj-$(CONFIG_NET_SOCK_MSG) += skmsg.o
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obj-$(CONFIG_BPF_SYSCALL) += sock_map.o
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obj-$(CONFIG_BPF_SYSCALL) += bpf_sk_storage.o
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obj-$(CONFIG_OF) += of_net.o
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obj-$(CONFIG_NET_TEST) += net_test.o
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obj-$(CONFIG_NET_DEVMEM) += devmem.o
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obj-$(CONFIG_DEBUG_NET_SMALL_RTNL) += rtnl_net_debug.o
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obj-$(CONFIG_FAIL_SKB_REALLOC) += skb_fault_injection.o
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