diff options
| author | Eric Dumazet <edumazet@google.com> | 2019-05-24 09:03:39 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-05-26 14:08:05 -0700 |
| commit | 4907abc605e328d61bee56e4e89db4f56ade2090 (patch) | |
| tree | 764e708aaa78091e2a8ccb046cfbf8a59aa10c88 /net/ieee802154/6lowpan | |
| parent | a39aca678a0626941aa99c18c1c452ca758e7865 (diff) | |
| download | linux-4907abc605e328d61bee56e4e89db4f56ade2090.tar.gz linux-4907abc605e328d61bee56e4e89db4f56ade2090.tar.bz2 linux-4907abc605e328d61bee56e4e89db4f56ade2090.zip | |
net: dynamically allocate fqdir structures
Following patch will add rcu grace period before fqdir
rhashtable destruction, so we need to dynamically allocate
fqdir structures to not force expensive synchronize_rcu() calls
in netns dismantle path.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ieee802154/6lowpan')
| -rw-r--r-- | net/ieee802154/6lowpan/reassembly.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/net/ieee802154/6lowpan/reassembly.c b/net/ieee802154/6lowpan/reassembly.c index 03a444c9e191..e59c3b708969 100644 --- a/net/ieee802154/6lowpan/reassembly.c +++ b/net/ieee802154/6lowpan/reassembly.c @@ -79,7 +79,7 @@ fq_find(struct net *net, const struct lowpan_802154_cb *cb, key.src = *src; key.dst = *dst; - q = inet_frag_find(&ieee802154_lowpan->fqdir, &key); + q = inet_frag_find(ieee802154_lowpan->fqdir, &key); if (!q) return NULL; @@ -377,11 +377,11 @@ static int __net_init lowpan_frags_ns_sysctl_register(struct net *net) table[0].procname = NULL; } - table[0].data = &ieee802154_lowpan->fqdir.high_thresh; - table[0].extra1 = &ieee802154_lowpan->fqdir.low_thresh; - table[1].data = &ieee802154_lowpan->fqdir.low_thresh; - table[1].extra2 = &ieee802154_lowpan->fqdir.high_thresh; - table[2].data = &ieee802154_lowpan->fqdir.timeout; + table[0].data = &ieee802154_lowpan->fqdir->high_thresh; + table[0].extra1 = &ieee802154_lowpan->fqdir->low_thresh; + table[1].data = &ieee802154_lowpan->fqdir->low_thresh; + table[1].extra2 = &ieee802154_lowpan->fqdir->high_thresh; + table[2].data = &ieee802154_lowpan->fqdir->timeout; hdr = register_net_sysctl(net, "net/ieee802154/6lowpan", table); if (hdr == NULL) @@ -449,16 +449,18 @@ static int __net_init lowpan_frags_init_net(struct net *net) net_ieee802154_lowpan(net); int res; - ieee802154_lowpan->fqdir.high_thresh = IPV6_FRAG_HIGH_THRESH; - ieee802154_lowpan->fqdir.low_thresh = IPV6_FRAG_LOW_THRESH; - ieee802154_lowpan->fqdir.timeout = IPV6_FRAG_TIMEOUT; res = fqdir_init(&ieee802154_lowpan->fqdir, &lowpan_frags, net); if (res < 0) return res; + + ieee802154_lowpan->fqdir->high_thresh = IPV6_FRAG_HIGH_THRESH; + ieee802154_lowpan->fqdir->low_thresh = IPV6_FRAG_LOW_THRESH; + ieee802154_lowpan->fqdir->timeout = IPV6_FRAG_TIMEOUT; + res = lowpan_frags_ns_sysctl_register(net); if (res < 0) - fqdir_exit(&ieee802154_lowpan->fqdir); + fqdir_exit(ieee802154_lowpan->fqdir); return res; } @@ -468,7 +470,7 @@ static void __net_exit lowpan_frags_exit_net(struct net *net) net_ieee802154_lowpan(net); lowpan_frags_ns_sysctl_unregister(net); - fqdir_exit(&ieee802154_lowpan->fqdir); + fqdir_exit(ieee802154_lowpan->fqdir); } static struct pernet_operations lowpan_frags_ops = { |