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tsnep: Support XDP BPF program setup
Implement setup of BPF programs for XDP RX path with command XDP_SETUP_PROG of ndo_bpf(). This is the final step for XDP RX path support. There is no need to reinit the RX queues as they are always prepared for XDP. Additionally remove $(tsnep-y) from $(tsnep-objs) because it is added automatically. Test results with A53 1.2GHz: XDP_DROP (samples/bpf/xdp1) proto 17: 883878 pkt/s XDP_TX (samples/bpf/xdp2) proto 17: 255693 pkt/s XDP_REDIRECT (samples/bpf/xdpsock) sock0@eth2:0 rxdrop xdp-drv pps pkts 1.00 rx 855,582 5,404,523 tx 0 0 XDP_REDIRECT (samples/bpf/xdp_redirect) eth2->eth1 613,267 rx/s 0 err,drop/s 613,272 xmit/s Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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// SPDX-License-Identifier: GPL-2.0 | ||
/* Copyright (C) 2022 Gerhard Engleder <gerhard@engleder-embedded.com> */ | ||
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#include <linux/if_vlan.h> | ||
#include <net/xdp_sock_drv.h> | ||
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#include "tsnep.h" | ||
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int tsnep_xdp_setup_prog(struct tsnep_adapter *adapter, struct bpf_prog *prog, | ||
struct netlink_ext_ack *extack) | ||
{ | ||
struct bpf_prog *old_prog; | ||
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old_prog = xchg(&adapter->xdp_prog, prog); | ||
if (old_prog) | ||
bpf_prog_put(old_prog); | ||
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return 0; | ||
} |