A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-06 03:45:24 -04:00
Code Issues Projects Releases Packages Wiki Activity

UPSTREAM: bpf: sockmap: Simplify sock_map_init_proto

Browse source 
We can take advantage of the fact that both callers of
sock_map_init_proto are holding a RCU read lock, and
have verified that psock is valid.

Change-Id: I012bf4f9541fdaad94b1f84e97c7dbf4abaf149f
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200309111243.6982-7-lmb@cloudflare.com
Signed-off-by: Tashfin Shakeer Rhythm <tashfinshakeerrhythm@gmail.com>
This commit is contained in:
Lorenz Bauer 2020-03-09 11:12:37 +00:00 • committed by basamaryan
commit 883d76baeb
No known key found for this signature in database
GPG key ID: 210D5384FB2A5885
1 changed files with 4 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

19
net/core/sock_map.c
View file

@ -180,28 +180,17 @@ static void sock_map_unref(struct sock *sk, void *link_raw)
}
}
static int sock_map_init_proto(struct sock *sk)
static int sock_map_init_proto(struct sock *sk, struct sk_psock *psock)
{
struct sk_psock *psock;
struct proto *prot;
sock_owned_by_me(sk);
rcu_read_lock();
psock = sk_psock(sk);
if (unlikely(!psock)) {
rcu_read_unlock();
return -EINVAL;
}
prot = tcp_bpf_get_proto(sk, psock);
if (IS_ERR(prot)) {
rcu_read_unlock();
if (IS_ERR(prot))
return PTR_ERR(prot);
}
sk_psock_update_proto(sk, psock, prot);
rcu_read_unlock();
return 0;
}
@ -280,7 +269,7 @@ static int sock_map_link(struct bpf_map *map, struct sk_psock_progs *progs,
if (msg_parser)
psock_set_prog(&psock->progs.msg_parser, msg_parser);
ret = sock_map_init_proto(sk);
ret = sock_map_init_proto(sk, psock);
if (ret < 0)
goto out_drop;
@ -328,7 +317,7 @@ static int sock_map_link_no_progs(struct bpf_map *map, struct sock *sk)
return -ENOMEM;
}
ret = sock_map_init_proto(sk);
ret = sock_map_init_proto(sk, psock);
if (ret < 0)
sk_psock_put(sk, psock);
return ret;