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net: ena: Don't register memory info on XDP exchange

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[ 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: 548c4940b9 ("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>
This commit is contained in:
David Arinzon
2022-12-29 07:30:06 +00:00
committed by Greg Kroah-Hartman
parent a4aa727ad0
commit f17d9aec07
1 changed files with 5 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/ethernet/amazon/ena/ena_netdev.c
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@@ -516,16 +516,18 @@ 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;
}