From: Matteo Croce <mcroce@redhat.com>
Date: Wed, 13 Feb 2019 14:40:30 +0000 (+0100)
Subject: iplink: document XDP subcommand to force the XDP mode.
X-Git-Tag: v5.0.0~16
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=619765fe14b640c9aa8eff73fa5bc32da3cbfe80;p=thirdparty%2Fiproute2.git

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>
---

diff --git a/ip/iplink.c b/ip/iplink.c
index b5519201f..3a0cf4595 100644
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -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"