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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020, Intel Corporation. */
#include "igc.h"
#include "igc_xdp.h"
int igc_xdp_set_prog(struct igc_adapter *adapter, struct bpf_prog *prog,
struct netlink_ext_ack *extack)
{
struct net_device *dev = adapter->netdev;
bool if_running = netif_running(dev);
struct bpf_prog *old_prog;
if (dev->mtu > ETH_DATA_LEN) {
/* For now, the driver doesn't support XDP functionality with
* jumbo frames so we return error.
*/
NL_SET_ERR_MSG_MOD(extack, "Jumbo frames not supported");
return -EOPNOTSUPP;
}
if (if_running)
igc_close(dev);
old_prog = xchg(&adapter->xdp_prog, prog);
if (old_prog)
bpf_prog_put(old_prog);
if (if_running)
igc_open(dev);
return 0;
}
int igc_xdp_register_rxq_info(struct igc_ring *ring)
{
struct net_device *dev = ring->netdev;
int err;
err = xdp_rxq_info_reg(&ring->xdp_rxq, dev, ring->queue_index, 0);
if (err) {
netdev_err(dev, "Failed to register xdp rxq info\n");
return err;
}
err = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, MEM_TYPE_PAGE_SHARED,
NULL);
if (err) {
netdev_err(dev, "Failed to register xdp rxq mem model\n");
xdp_rxq_info_unreg(&ring->xdp_rxq);
return err;
}
return 0;
}
void igc_xdp_unregister_rxq_info(struct igc_ring *ring)
{
xdp_rxq_info_unreg(&ring->xdp_rxq);
}
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