diff options
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 2fba3be5719e..76197ede22a9 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -196,7 +196,7 @@ struct tun_flow_entry { #define TUN_NUM_FLOW_ENTRIES 1024 -struct tun_steering_prog { +struct tun_prog { struct rcu_head rcu; struct bpf_prog *prog; }; @@ -238,7 +238,7 @@ struct tun_struct { u32 rx_batched; struct tun_pcpu_stats __percpu *pcpu_stats; struct bpf_prog __rcu *xdp_prog; - struct tun_steering_prog __rcu *steering_prog; + struct tun_prog __rcu *steering_prog; }; bool tun_is_xdp_buff(void *ptr) @@ -590,7 +590,7 @@ static u16 tun_automq_select_queue(struct tun_struct *tun, struct sk_buff *skb) static u16 tun_ebpf_select_queue(struct tun_struct *tun, struct sk_buff *skb) { - struct tun_steering_prog *prog; + struct tun_prog *prog; u16 ret = 0; prog = rcu_dereference(tun->steering_prog); @@ -2184,19 +2184,18 @@ static ssize_t tun_chr_read_iter(struct kiocb *iocb, struct iov_iter *to) return ret; } -static void tun_steering_prog_free(struct rcu_head *rcu) +static void tun_prog_free(struct rcu_head *rcu) { - struct tun_steering_prog *prog = container_of(rcu, - struct tun_steering_prog, rcu); + struct tun_prog *prog = container_of(rcu, struct tun_prog, rcu); bpf_prog_destroy(prog->prog); kfree(prog); } -static int __tun_set_steering_ebpf(struct tun_struct *tun, - struct bpf_prog *prog) +static int __tun_set_ebpf(struct tun_struct *tun, struct tun_prog **prog_p, + struct bpf_prog *prog) { - struct tun_steering_prog *old, *new = NULL; + struct tun_prog *old, *new = NULL; if (prog) { new = kmalloc(sizeof(*new), GFP_KERNEL); @@ -2206,13 +2205,13 @@ static int __tun_set_steering_ebpf(struct tun_struct *tun, } spin_lock_bh(&tun->lock); - old = rcu_dereference_protected(tun->steering_prog, + old = rcu_dereference_protected(*prog_p, lockdep_is_held(&tun->lock)); - rcu_assign_pointer(tun->steering_prog, new); + rcu_assign_pointer(*prog_p, new); spin_unlock_bh(&tun->lock); if (old) - call_rcu(&old->rcu, tun_steering_prog_free); + call_rcu(&old->rcu, tun_prog_free); return 0; } @@ -2225,7 +2224,7 @@ static void tun_free_netdev(struct net_device *dev) free_percpu(tun->pcpu_stats); tun_flow_uninit(tun); security_tun_dev_free_security(tun->security); - __tun_set_steering_ebpf(tun, NULL); + __tun_set_ebpf(tun, &tun->steering_prog, NULL); } static void tun_setup(struct net_device *dev) @@ -2720,7 +2719,8 @@ unlock: return ret; } -static int tun_set_steering_ebpf(struct tun_struct *tun, void __user *data) +static int tun_set_ebpf(struct tun_struct *tun, struct tun_prog **prog_p, + void __user *data) { struct bpf_prog *prog; int fd; @@ -2736,7 +2736,7 @@ static int tun_set_steering_ebpf(struct tun_struct *tun, void __user *data) return PTR_ERR(prog); } - return __tun_set_steering_ebpf(tun, prog); + return __tun_set_ebpf(tun, prog_p, prog); } static long __tun_chr_ioctl(struct file *file, unsigned int cmd, @@ -3016,7 +3016,7 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd, break; case TUNSETSTEERINGEBPF: - ret = tun_set_steering_ebpf(tun, argp); + ret = tun_set_ebpf(tun, &tun->steering_prog, argp); break; default: |