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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-16 00:22:29 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-16 00:22:29 +0300 |
commit | d635a69dd4981cc51f90293f5f64268620ed1565 (patch) | |
tree | 5e0a758b402ea7d624c25c3a343545dd29e80f31 /net/ipv4/inet_fragment.c | |
parent | ac73e3dc8acd0a3be292755db30388c3580f5674 (diff) | |
parent | efd5a1584537698220578227e6467638307c2a0b (diff) | |
download | linux-d635a69dd4981cc51f90293f5f64268620ed1565.tar.xz |
Merge tag 'net-next-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core:
- support "prefer busy polling" NAPI operation mode, where we defer
softirq for some time expecting applications to periodically busy
poll
- AF_XDP: improve efficiency by more batching and hindering the
adjacency cache prefetcher
- af_packet: make packet_fanout.arr size configurable up to 64K
- tcp: optimize TCP zero copy receive in presence of partial or
unaligned reads making zero copy a performance win for much smaller
messages
- XDP: add bulk APIs for returning / freeing frames
- sched: support fragmenting IP packets as they come out of conntrack
- net: allow virtual netdevs to forward UDP L4 and fraglist GSO skbs
BPF:
- BPF switch from crude rlimit-based to memcg-based memory accounting
- BPF type format information for kernel modules and related tracing
enhancements
- BPF implement task local storage for BPF LSM
- allow the FENTRY/FEXIT/RAW_TP tracing programs to use
bpf_sk_storage
Protocols:
- mptcp: improve multiple xmit streams support, memory accounting and
many smaller improvements
- TLS: support CHACHA20-POLY1305 cipher
- seg6: add support for SRv6 End.DT4/DT6 behavior
- sctp: Implement RFC 6951: UDP Encapsulation of SCTP
- ppp_generic: add ability to bridge channels directly
- bridge: Connectivity Fault Management (CFM) support as is defined
in IEEE 802.1Q section 12.14.
Drivers:
- mlx5: make use of the new auxiliary bus to organize the driver
internals
- mlx5: more accurate port TX timestamping support
- mlxsw:
- improve the efficiency of offloaded next hop updates by using
the new nexthop object API
- support blackhole nexthops
- support IEEE 802.1ad (Q-in-Q) bridging
- rtw88: major bluetooth co-existance improvements
- iwlwifi: support new 6 GHz frequency band
- ath11k: Fast Initial Link Setup (FILS)
- mt7915: dual band concurrent (DBDC) support
- net: ipa: add basic support for IPA v4.5
Refactor:
- a few pieces of in_interrupt() cleanup work from Sebastian Andrzej
Siewior
- phy: add support for shared interrupts; get rid of multiple driver
APIs and have the drivers write a full IRQ handler, slight growth
of driver code should be compensated by the simpler API which also
allows shared IRQs
- add common code for handling netdev per-cpu counters
- move TX packet re-allocation from Ethernet switch tag drivers to a
central place
- improve efficiency and rename nla_strlcpy
- number of W=1 warning cleanups as we now catch those in a patchwork
build bot
Old code removal:
- wan: delete the DLCI / SDLA drivers
- wimax: move to staging
- wifi: remove old WDS wifi bridging support"
* tag 'net-next-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1922 commits)
net: hns3: fix expression that is currently always true
net: fix proc_fs init handling in af_packet and tls
nfc: pn533: convert comma to semicolon
af_vsock: Assign the vsock transport considering the vsock address flags
af_vsock: Set VMADDR_FLAG_TO_HOST flag on the receive path
vsock_addr: Check for supported flag values
vm_sockets: Add VMADDR_FLAG_TO_HOST vsock flag
vm_sockets: Add flags field in the vsock address data structure
net: Disable NETIF_F_HW_TLS_TX when HW_CSUM is disabled
tcp: Add logic to check for SYN w/ data in tcp_simple_retransmit
net: mscc: ocelot: install MAC addresses in .ndo_set_rx_mode from process context
nfc: s3fwrn5: Release the nfc firmware
net: vxget: clean up sparse warnings
mlxsw: spectrum_router: Use eXtended mezzanine to offload IPv4 router
mlxsw: spectrum: Set KVH XLT cache mode for Spectrum2/3
mlxsw: spectrum_router_xm: Introduce basic XM cache flushing
mlxsw: reg: Add Router LPM Cache Enable Register
mlxsw: reg: Add Router LPM Cache ML Delete Register
mlxsw: spectrum_router_xm: Implement L-value tracking for M-index
mlxsw: reg: Add XM Router M Table Register
...
Diffstat (limited to 'net/ipv4/inet_fragment.c')
-rw-r--r-- | net/ipv4/inet_fragment.c | 47 |
1 files changed, 39 insertions, 8 deletions
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index 10d31733297d..05cd198d7a6b 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -145,12 +145,16 @@ static void inet_frags_free_cb(void *ptr, void *arg) inet_frag_destroy(fq); } -static void fqdir_work_fn(struct work_struct *work) +static LLIST_HEAD(fqdir_free_list); + +static void fqdir_free_fn(struct work_struct *work) { - struct fqdir *fqdir = container_of(work, struct fqdir, destroy_work); - struct inet_frags *f = fqdir->f; + struct llist_node *kill_list; + struct fqdir *fqdir, *tmp; + struct inet_frags *f; - rhashtable_free_and_destroy(&fqdir->rhashtable, inet_frags_free_cb, NULL); + /* Atomically snapshot the list of fqdirs to free */ + kill_list = llist_del_all(&fqdir_free_list); /* We need to make sure all ongoing call_rcu(..., inet_frag_destroy_rcu) * have completed, since they need to dereference fqdir. @@ -158,10 +162,25 @@ static void fqdir_work_fn(struct work_struct *work) */ rcu_barrier(); - if (refcount_dec_and_test(&f->refcnt)) - complete(&f->completion); + llist_for_each_entry_safe(fqdir, tmp, kill_list, free_list) { + f = fqdir->f; + if (refcount_dec_and_test(&f->refcnt)) + complete(&f->completion); - kfree(fqdir); + kfree(fqdir); + } +} + +static DECLARE_WORK(fqdir_free_work, fqdir_free_fn); + +static void fqdir_work_fn(struct work_struct *work) +{ + struct fqdir *fqdir = container_of(work, struct fqdir, destroy_work); + + rhashtable_free_and_destroy(&fqdir->rhashtable, inet_frags_free_cb, NULL); + + if (llist_add(&fqdir->free_list, &fqdir_free_list)) + queue_work(system_wq, &fqdir_free_work); } int fqdir_init(struct fqdir **fqdirp, struct inet_frags *f, struct net *net) @@ -184,10 +203,22 @@ int fqdir_init(struct fqdir **fqdirp, struct inet_frags *f, struct net *net) } EXPORT_SYMBOL(fqdir_init); +static struct workqueue_struct *inet_frag_wq; + +static int __init inet_frag_wq_init(void) +{ + inet_frag_wq = create_workqueue("inet_frag_wq"); + if (!inet_frag_wq) + panic("Could not create inet frag workq"); + return 0; +} + +pure_initcall(inet_frag_wq_init); + void fqdir_exit(struct fqdir *fqdir) { INIT_WORK(&fqdir->destroy_work, fqdir_work_fn); - queue_work(system_wq, &fqdir->destroy_work); + queue_work(inet_frag_wq, &fqdir->destroy_work); } EXPORT_SYMBOL(fqdir_exit); |