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net: tun: record RX queue in skb before do_xdp_generic()

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[ Upstream commit 3fe260e00cd0bf0be853c48fcc1e19853df615bb ]

This allows netif_receive_generic_xdp() to correctly determine the RX
queue from which the skb is coming, so that the context passed to the
XDP program will contain the correct RX queue index.

Signed-off-by: Gilberto Bertin <me@jibi.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gilberto Bertin 2020-04-10 18:20:59 +02:00 committed by Greg Kroah-Hartman
parent f6b264f2a0
commit bb54dcca3f
1 changed files with 2 additions and 1 deletions
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3
drivers/net/tun.c
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@ -1925,6 +1925,7 @@ drop:
skb_reset_network_header(skb);
skb_probe_transport_header(skb);
skb_record_rx_queue(skb, tfile->queue_index);
if (skb_xdp) {
struct bpf_prog *xdp_prog;
@ -2492,6 +2493,7 @@ build:
skb->protocol = eth_type_trans(skb, tun->dev);
skb_reset_network_header(skb);
skb_probe_transport_header(skb);
skb_record_rx_queue(skb, tfile->queue_index);
if (skb_xdp) {
err = do_xdp_generic(xdp_prog, skb);
@ -2503,7 +2505,6 @@ build:
!tfile->detached)
rxhash = __skb_get_hash_symmetric(skb);
skb_record_rx_queue(skb, tfile->queue_index);
netif_receive_skb(skb);
/* No need for get_cpu_ptr() here since this function is