diff options
| author | David Arinzon <darinzon@amazon.com> | 2022-12-29 07:30:06 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-12 12:00:37 +0100 |
| commit | 418608d50e6766f5b52206f684edc334ec1aca2f (patch) | |
| tree | e0d481a509f84cc0c616df93d1a2c75cb4594294 | |
| parent | e67f558199918d1867a5d4c0b1f8e8361938be2f (diff) | |
net: ena: Don't register memory info on XDP exchange
[ Upstream commit 9c9e539956fa67efb8a65e32b72a853740b33445 ]
Since the queues aren't destroyed when we only exchange XDP programs,
there's no need to re-register them again.
Fixes: 548c4940b9f1 ("net: ena: Implement XDP_TX action")
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David Arinzon <darinzon@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_netdev.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index 41c821348476..f4ee8671b738 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -512,16 +512,18 @@ static void ena_xdp_exchange_program_rx_in_range(struct ena_adapter *adapter, struct bpf_prog *prog, int first, int count) { + struct bpf_prog *old_bpf_prog; struct ena_ring *rx_ring; int i = 0; for (i = first; i < count; i++) { rx_ring = &adapter->rx_ring[i]; - xchg(&rx_ring->xdp_bpf_prog, prog); - if (prog) { + old_bpf_prog = xchg(&rx_ring->xdp_bpf_prog, prog); + + if (!old_bpf_prog && prog) { ena_xdp_register_rxq_info(rx_ring); rx_ring->rx_headroom = XDP_PACKET_HEADROOM; - } else { + } else if (old_bpf_prog && !prog) { ena_xdp_unregister_rxq_info(rx_ring); rx_ring->rx_headroom = NET_SKB_PAD; } |