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Hangbin Liu 503e9229b0 iproute2: add check_libbpf() and get_libbpf_version() 
This patch aim to add basic checking functions for later iproute2
libbpf support.

First we add check_libbpf() in configure to see if we have bpf library
support. By default the system libbpf will be used, but static linking
against a custom libbpf version can be achieved by passing libbpf DESTDIR
to variable LIBBPF_DIR for configure.

Another variable LIBBPF_FORCE is used to control whether to build iproute2
with libbpf. If set to on, then force to build with libbpf and exit if
not available. If set to off, then force to not build with libbpf.

When dynamically linking against libbpf, we can't be sure that the
version we discovered at compile time is actually the one we are
using at runtime. This can lead to hard-to-debug errors. So we add
a new file lib/bpf_glue.c and a helper function get_libbpf_version()
to get correct libbpf version at runtime.

Signed-off-by: Hangbin Liu <haliu@redhat.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
 		2020-11-24 22:14:02 -07:00
..
.gitignore Another .gitignore file. 2006-08-08 12:11:23 -07:00
Makefile ip link: initial support for bareudp devices 2020-07-06 11:11:05 -07:00
ifcfg ifcfg/rtpr: convert to POSIX shell 2018-01-10 08:26:09 -08:00
ila_common.h SPDX license identifiers 2017-11-24 12:21:35 -08:00
ip.c iproute2: add check_libbpf() and get_libbpf_version() 2020-11-24 22:14:02 -07:00
ip6tunnel.c ip tunnel: add json output 2019-08-07 12:00:58 -07:00
ip_common.h add support for mptcp netlink interface 2020-04-29 16:43:18 +00:00
ipaddress.c Merge branch 'main' into next 2020-10-11 20:11:09 -06:00
ipaddrlabel.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
ipfou.c ip fou: respect preferred_family for IPv6 2020-07-06 11:03:09 -07:00
ipila.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
ipl2tp.c use print_{,h}hu instead of print_uint when format specifier is %{,h}hu 2019-02-10 19:00:59 -08:00
iplink.c ip: iplink: Convert to use parse_on_off() 2020-11-24 21:43:23 -07:00
iplink_bareudp.c iplink_bareudp: use common include syntax 2020-07-08 08:38:58 -07:00
iplink_bond.c ip: bond: add peer notification delay support 2019-07-10 13:54:09 -07:00
iplink_bond_slave.c iplink: bond: print lacp actor/partner oper states as strings 2020-01-02 17:45:32 +00:00
iplink_bridge.c ip link: xstats: fix TX IGMP reports string 2020-01-29 10:11:35 -08:00
iplink_bridge_slave.c ip: iplink_bridge_slave: Convert to use print_on_off() 2020-11-24 21:43:30 -07:00
iplink_can.c iplink_can: fix format output of clock with flag -details 2019-07-26 15:05:20 -07:00
iplink_dummy.c SPDX license identifiers 2017-11-24 12:21:35 -08:00
iplink_geneve.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
iplink_hsr.c iplink: hsr: add support for creating PRP device similar to HSR 2020-08-22 21:14:12 -07:00
iplink_ifb.c SPDX license identifiers 2017-11-24 12:21:35 -08:00
iplink_ipoib.c ip: iplink_ipoib.c: Remove extra spaces 2020-09-30 22:29:05 -07:00
iplink_ipvlan.c iplink: add ipvtap support 2018-09-20 17:53:56 -07:00
iplink_macvlan.c ip: link_macvlan.c: add json output support 2017-08-17 18:02:41 -07:00
iplink_netdevsim.c ip: link: add support for netdevsim device type 2018-01-02 20:46:19 -08:00
iplink_nlmon.c SPDX license identifiers 2017-11-24 12:21:35 -08:00
iplink_rmnet.c ip: add rmnet initial support 2018-06-15 11:15:14 -07:00
iplink_team.c SPDX license identifiers 2017-11-24 12:21:35 -08:00
iplink_vcan.c SPDX license identifiers 2017-11-24 12:21:35 -08:00
iplink_vlan.c lib: parse_mapping: Recognize a keyword "all" 2020-11-13 19:43:15 -07:00
iplink_vrf.c iplink_vrf: Save device index from response for return code 2018-06-01 15:45:09 -04:00
iplink_vxcan.c iplink: Perform most of request buffer setups and checks in iplink_parse() 2018-03-11 17:59:03 -07:00
iplink_vxlan.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
iplink_xdp.c iplink: add support for reporting multiple XDP programs 2018-07-15 13:10:03 -07:00
iplink_xstats.c ip: xstats: add json output support 2019-03-15 13:55:57 -07:00
ipmacsec.c lib: Add parse_one_of(), parse_on_off() 2020-11-13 19:43:15 -07:00
ipmaddr.c iproute2: ip maddress: Check multiaddr length 2020-08-22 21:12:30 -07:00
ipmonitor.c ipmonitor: Add nexthop option to monitor 2019-06-11 10:31:30 -07:00
ipmptcp.c mptcp: show all endpoints when no ID is specified 2020-07-27 16:39:58 -07:00
ipmroute.c Merge branch 'master' into next 2019-06-21 15:59:24 -07:00
ipneigh.c ipneigh: neigh get support 2019-10-01 08:23:43 -07:00
ipnetconf.c ip: ipnetconf: Convert to use print_on_off() 2020-11-24 21:43:34 -07:00
ipnetns.c ip: add error reporting when RTM_GETNSID failed 2020-10-12 08:10:25 -07:00
ipnexthop.c nexthop: Always print nexthop flags 2020-11-22 12:43:56 -07:00
ipntable.c ipntable: add missing ndts_table_fulls ntable stat 2020-10-06 15:07:10 -07:00
ipprefix.c Tree wide: Drop sockaddr_nl arg 2018-10-22 09:43:48 -07:00
iproute.c ip route: Print "trap" nexthop indication 2020-11-22 12:42:20 -07:00
iproute_lwtunnel.c lwtunnel: add support for rpl segment routing 2020-05-27 00:03:17 +00:00
iprule.c iprule: always print realms keyword for rule 2019-04-24 15:06:15 -07:00
ipseg6.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
iptoken.c ip/iptoken: fix dump error when ipv6 disabled 2019-06-26 14:23:12 -07:00
iptunnel.c ip tunnel: add json output 2019-08-07 12:00:58 -07:00
iptuntap.c ip: iptuntap: Convert to use print_on_off() 2020-11-24 21:43:41 -07:00
ipvrf.c ss: introduce cgroup2 cache and helper functions 2020-05-13 14:28:04 +00:00
ipxfrm.c ip xfrm: support printing XFRMA_SET_MARK_MASK attribute in states 2020-09-01 19:49:29 -06:00
link_gre.c erspan: Add type I version 0 support. 2020-04-30 02:40:10 +00:00
link_gre6.c erspan: Add type I version 0 support. 2020-04-30 02:40:10 +00:00
link_ip6tnl.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
link_iptnl.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
link_veth.c iplink: Perform most of request buffer setups and checks in iplink_parse() 2018-03-11 17:59:03 -07:00
link_vti.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
link_vti6.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
link_xfrm.c ip: xfrm if_id -ve value is error 2019-12-25 12:38:13 -08:00
routef mark shell scripts +x 2018-01-10 08:23:49 -08:00
routel mark shell scripts +x 2018-01-10 08:23:49 -08:00
rtm_map.c ip: add a new parameter -Numeric 2019-06-18 08:37:47 -07:00
rtmon.c replace SNAPSHOT with auto-generated version string 2020-08-03 10:02:47 -07:00
rtpr ifcfg/rtpr: convert to POSIX shell 2018-01-10 08:26:09 -08:00
static-syms.c SPDX license identifiers 2017-11-24 12:21:35 -08:00
tcp_metrics.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
tunnel.c ip tunnel: add json output 2019-08-07 12:00:58 -07:00
tunnel.h tunnel: factorize printout of GRE key and flags 2019-07-18 10:19:47 -07:00
xfrm.h xfrm: add option to hide keys in state output 2019-01-21 08:31:20 -08:00
xfrm_monitor.c treewide: refactor help messages 2019-05-20 14:35:07 -07:00
xfrm_policy.c ip xfrm: policy: support policies with IF_ID in get/delete/deleteall 2020-07-13 08:51:37 -07:00
xfrm_state.c ip xfrm: support setting XFRMA_SET_MARK_MASK attribute in states 2020-10-07 00:10:47 -06:00