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iplink: document XDP subcommand to force the XDP mode. 

When attaching an eBPF program to a device, ip link can force the XDP mode
by using the xdp{generic,drv,offload} keyword instead of just 'xdp'.
Document this behaviour also in the help output.

Signed-off-by: Matteo Croce <mcroce@redhat.com>
Fixes: 14683814 ("bpf: add xdpdrv for requesting XDP driver mode")
Fixes: 1b5e8094 ("bpf: allow requesting XDP HW offload")
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Matteo Croce 2019-02-13 15:40:30 +01:00 committed by Stephen Hemminger
parent 0f3f0ca3a2
commit 619765fe14
1 changed files with 1 additions and 1 deletions
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ip/iplink.c
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@ -98,7 +98,7 @@ void iplink_usage(void)
" [ trust { on | off} ] ]\n"
" [ node_guid { eui64 } ]\n"
" [ port_guid { eui64 } ]\n"
" [ xdp { off |\n"
" [ { xdp | xdpgeneric | xdpdrv | xdpoffload } { off |\n"
" object FILE [ section NAME ] [ verbose ] |\n"
" pinned FILE } ]\n"
" [ master DEVICE ][ vrf NAME ]\n"