xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: dynamically allocate fqdir structures

Browse Source 
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>
This commit is contained in:
Eric Dumazet
2019-05-24 09:03:39 -07:00
committed by David S. Miller
parent a39aca678a
commit 4907abc605
11 changed files with 78 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
include/net/inet_frag.h
View File

@@ -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);