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| author |   Jason Wang <jasowang@redhat.com> | 2017-09-04 11:36:09 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-09-05 14:26:41 -0700 |
| commit | 1cfe6e9351c256ec6aebcf64223aa21dc7654257 (patch) | |
| tree | 2fbaedcd4ca895951ffa43ad7a59711ba5c04091 /drivers/net/tun.c | |
| parent | tun: reserve extra headroom only when XDP is set (diff) | |
| download | linux-dev-1cfe6e9351c256ec6aebcf64223aa21dc7654257.tar.xz linux-dev-1cfe6e9351c256ec6aebcf64223aa21dc7654257.zip | |
tun: rename generic_xdp to skb_xdp
Rename "generic_xdp" to "skb_xdp" to avoid confusing it with the
generic XDP which will be done at netif_receive_skb().
Cc: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 80ac18f8b55f..3c9985f29950 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1267,7 +1267,7 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, struct tun_file *tfile, struct iov_iter *from, struct virtio_net_hdr *hdr, - int len, int *generic_xdp) + int len, int *skb_xdp) { struct page_frag *alloc_frag = ¤t->task_frag; struct sk_buff *skb; @@ -1301,13 +1301,13 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, * we do XDP on skb in case the headroom is not enough. */ if (hdr->gso_type || !xdp_prog) - *generic_xdp = 1; + *skb_xdp = 1; else - *generic_xdp = 0; + *skb_xdp = 0; rcu_read_lock(); xdp_prog = rcu_dereference(tun->xdp_prog); - if (xdp_prog && !*generic_xdp) { + if (xdp_prog && !*skb_xdp) { struct xdp_buff xdp; void *orig_data; u32 act; @@ -1389,7 +1389,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, bool zerocopy = false; int err; u32 rxhash; - int generic_xdp = 1; + int skb_xdp = 1; if (!(tun->dev->flags & IFF_UP)) return -EIO; @@ -1448,7 +1448,11 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, } if (tun_can_build_skb(tun, tfile, len, noblock, zerocopy)) { - skb = tun_build_skb(tun, tfile, from, &gso, len, &generic_xdp); + /* For the packet that is not easy to be processed + * (e.g gso or jumbo packet), we will do it at after + * skb was created with generic XDP routine. + */ + skb = tun_build_skb(tun, tfile, from, &gso, len, &skb_xdp); if (IS_ERR(skb)) { this_cpu_inc(tun->pcpu_stats->rx_dropped); return PTR_ERR(skb); @@ -1528,7 +1532,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, skb_reset_network_header(skb); skb_probe_transport_header(skb, 0); - if (generic_xdp) { + if (skb_xdp) { struct bpf_prog *xdp_prog; int ret; |