diff options
Diffstat (limited to 'drivers/net/tap.c')
| -rw-r--r-- | drivers/net/tap.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/net/tap.c b/drivers/net/tap.c index 8941aa199ea3..d30d730ed5a7 100644 --- a/drivers/net/tap.c +++ b/drivers/net/tap.c @@ -555,6 +555,9 @@ static int tap_open(struct inode *inode, struct file *file) goto err_put; } + /* tap groks IOCB_NOWAIT just fine, mark it as such */ + file->f_mode |= FMODE_NOWAIT; + dev_put(tap->dev); rtnl_unlock(); @@ -739,7 +742,7 @@ static ssize_t tap_get_user(struct tap_queue *q, void *msg_control, /* Move network header to the right position for VLAN tagged packets */ if (eth_type_vlan(skb->protocol) && - __vlan_get_protocol(skb, skb->protocol, &depth) != 0) + vlan_get_protocol_and_depth(skb, skb->protocol, &depth) != 0) skb_set_network_header(skb, depth); /* copy skb_ubuf_info for callback when skb has no error */ @@ -771,8 +774,12 @@ static ssize_t tap_write_iter(struct kiocb *iocb, struct iov_iter *from) { struct file *file = iocb->ki_filp; struct tap_queue *q = file->private_data; + int noblock = 0; + + if ((file->f_flags & O_NONBLOCK) || (iocb->ki_flags & IOCB_NOWAIT)) + noblock = 1; - return tap_get_user(q, NULL, from, file->f_flags & O_NONBLOCK); + return tap_get_user(q, NULL, from, noblock); } /* Put packet to the user space buffer */ @@ -888,8 +895,12 @@ static ssize_t tap_read_iter(struct kiocb *iocb, struct iov_iter *to) struct file *file = iocb->ki_filp; struct tap_queue *q = file->private_data; ssize_t len = iov_iter_count(to), ret; + int noblock = 0; + + if ((file->f_flags & O_NONBLOCK) || (iocb->ki_flags & IOCB_NOWAIT)) + noblock = 1; - ret = tap_do_read(q, to, file->f_flags & O_NONBLOCK, NULL); + ret = tap_do_read(q, to, noblock, NULL); ret = min_t(ssize_t, ret, len); if (ret > 0) iocb->ki_pos = ret; @@ -1186,7 +1197,7 @@ static int tap_get_user_xdp(struct tap_queue *q, struct xdp_buff *xdp) /* Move network header to the right position for VLAN tagged packets */ if (eth_type_vlan(skb->protocol) && - __vlan_get_protocol(skb, skb->protocol, &depth) != 0) + vlan_get_protocol_and_depth(skb, skb->protocol, &depth) != 0) skb_set_network_header(skb, depth); rcu_read_lock(); |