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 /include/net/inet_frag.h | |
| parent | net: add a net pointer to struct fqdir (diff) | |
| download | linux-dev-4907abc605e328d61bee56e4e89db4f56ade2090.tar.xz linux-dev-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 'include/net/inet_frag.h')
| -rw-r--r-- | include/net/inet_frag.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h index 37cde5c1498c..5f754c660cfa 100644 --- a/include/net/inet_frag.h +++ b/include/net/inet_frag.h @@ -105,14 +105,25 @@ struct inet_frags { int inet_frags_init(struct inet_frags *); void inet_frags_fini(struct inet_frags *); -static inline int fqdir_init(struct fqdir *fqdir, struct inet_frags *f, +static inline int fqdir_init(struct fqdir **fqdirp, struct inet_frags *f, struct net *net) { + struct fqdir *fqdir = kzalloc(sizeof(*fqdir), GFP_KERNEL); + int res; + + if (!fqdir) + return -ENOMEM; fqdir->f = f; fqdir->net = net; - atomic_long_set(&fqdir->mem, 0); - return rhashtable_init(&fqdir->rhashtable, &fqdir->f->rhash_params); + res = rhashtable_init(&fqdir->rhashtable, &fqdir->f->rhash_params); + if (res < 0) { + kfree(fqdir); + return res; + } + *fqdirp = fqdir; + return 0; } + void fqdir_exit(struct fqdir *fqdir); void inet_frag_kill(struct inet_frag_queue *q); |