34 lines
742 B
C
34 lines
742 B
C
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2020, Intel Corporation. */
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#include "igc.h"
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#include "igc_xdp.h"
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int igc_xdp_set_prog(struct igc_adapter *adapter, struct bpf_prog *prog,
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struct netlink_ext_ack *extack)
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{
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struct net_device *dev = adapter->netdev;
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bool if_running = netif_running(dev);
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struct bpf_prog *old_prog;
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if (dev->mtu > ETH_DATA_LEN) {
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/* For now, the driver doesn't support XDP functionality with
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* jumbo frames so we return error.
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*/
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NL_SET_ERR_MSG_MOD(extack, "Jumbo frames not supported");
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return -EOPNOTSUPP;
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}
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if (if_running)
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igc_close(dev);
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old_prog = xchg(&adapter->xdp_prog, prog);
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if (old_prog)
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bpf_prog_put(old_prog);
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if (if_running)
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igc_open(dev);
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return 0;
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}
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