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Sebastian Andrzej Siewior 92dcabd7a0 net: Don't disable interrupts in __netdev_alloc_skb() 
__netdev_alloc_skb() can be used from any context and is used by NAPI
and non-NAPI drivers. Non-NAPI drivers use it in interrupt context and
NAPI drivers use it during initial allocation (->ndo_open() or
->ndo_change_mtu()). Some NAPI drivers share the same function for the
initial allocation and the allocation in their NAPI callback.

The interrupts are disabled in order to ensure locked access from every
context to `netdev_alloc_cache'.

Let __netdev_alloc_skb() check if interrupts are disabled. If they are, use
`netdev_alloc_cache'. Otherwise disable BH and use `napi_alloc_cache.page'.
The IRQ check is cheaper compared to disabling & enabling interrupts and
memory allocation with disabled interrupts does not work on -RT.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-09 19:40:09 -07:00
..
bpf_sk_storage.c bpf: move memory size checks to bpf_map_charge_init() 2019-05-31 16:52:56 -07:00
datagram.c datagram: remove rendundant 'peeked' argument 2019-04-08 09:51:54 -07:00
datagram.h net/core: Allow the compiler to verify declaration and definition consistency 2019-03-27 13:49:44 -07:00
dev.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 09:29:14 -07:00
dev_addr_lists.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dev_ioctl.c net/core: Document all dev_ioctl() arguments 2019-03-27 13:49:43 -07:00
devlink.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
drop_monitor.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
dst.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
dst_cache.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ethtool.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 09:29:14 -07:00
failover.c failover: allow name change on IFF_UP slave interfaces 2019-04-10 22:12:26 -07:00
fib_notifier.c net: Fix fib notifer to return errno 2018-03-29 14:10:30 -04:00
fib_rules.c Revert "fib_rules: return 0 directly if an exactly same rule exists when NLM_F_EXCL not supplied" 2019-06-05 17:54:46 -07:00
filter.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
flow_dissector.c flow_dissector: remove unused FLOW_DISSECTOR_F_STOP_AT_L3 flag 2019-06-03 14:56:35 -07:00
flow_offload.c flow_offload: use struct_size() in kzalloc() 2019-05-25 10:57:58 -07:00
gen_estimator.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gen_stats.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gro_cells.c gro_cells: make sure device is up in gro_cells_receive() 2019-03-10 11:07:14 -07:00
hwbm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
link_watch.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
lwt_bpf.c netlink: make validation more configurable for future strictness 2019-04-27 17:07:21 -04:00
lwtunnel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
Makefile bpf: Introduce bpf sk local storage 2019-04-27 09:07:04 -07:00
neighbour.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
net-procfs.c treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively 2019-04-09 14:19:06 +02:00
net-sysfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
net-sysfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
net-traces.c trace: events: add a few neigh tracepoints 2019-02-17 10:33:39 -08:00
net_namespace.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
netclassid_cgroup.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
netevent.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
netpoll.c net: ipv4: provide __rcu annotation for ifa_list 2019-06-02 18:08:36 -07:00
netprio_cgroup.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
page_pool.c page_pool: use DMA_ATTR_SKIP_CPU_SYNC for DMA mappings 2019-02-13 22:00:16 -08:00
pktgen.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
ptp_classifier.c net/core: work around section mismatch warning for ptp_classifier 2019-04-16 20:46:17 -07:00
request_sock.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtnetlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
scm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
secure_seq.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
skbuff.c net: Don't disable interrupts in __netdev_alloc_skb() 2019-06-09 19:40:09 -07:00
skmsg.c bpf: sockmap fix msg->sg.size account on ingress skb 2019-05-14 01:31:43 +02:00
sock.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sock_diag.c net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd() 2018-08-14 10:01:24 -07:00
sock_map.c bpf: move memory size checks to bpf_map_charge_init() 2019-05-31 16:52:56 -07:00
sock_reuseport.c net/core: Document reuseport_add_sock() bind_inany argument 2019-03-27 13:49:43 -07:00
stream.c tcp: reduce POLLOUT events caused by TCP_NOTSENT_LOWAT 2018-12-04 21:21:18 -08:00
sysctl_net_core.c net: convert rps_needed and rfs_needed to new static branch api 2019-03-23 21:57:38 -04:00
timestamping.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
tso.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
utils.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
xdp.c xdp: remove redundant variable 'headroom' 2018-09-01 01:35:53 +02:00