diff options
| author | Yonghong Song <yhs@fb.com> | 2020-09-14 15:32:10 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-09-14 18:52:46 -0700 |
| commit | d317b0a8acfc4b126858e4cdadb03338d22f8ce0 (patch) | |
| tree | 853ed1996bfd2d2a92041ab32bb7708aa6ea5814 /tools/lib/bpf | |
| parent | 63bea244fee23f31a4379769ef09e30365bb74b7 (diff) | |
libbpf: Fix a compilation error with xsk.c for ubuntu 16.04
When syncing latest libbpf repo to bcc, ubuntu 16.04 (4.4.0 LTS kernel)
failed compilation for xsk.c:
In file included from /tmp/debuild.0jkauG/bcc/src/cc/libbpf/src/xsk.c:23:0:
/tmp/debuild.0jkauG/bcc/src/cc/libbpf/src/xsk.c: In function ‘xsk_get_ctx’:
/tmp/debuild.0jkauG/bcc/src/cc/libbpf/include/linux/list.h:81:9: warning: implicit
declaration of function ‘container_of’ [-Wimplicit-function-declaration]
container_of(ptr, type, member)
^
/tmp/debuild.0jkauG/bcc/src/cc/libbpf/include/linux/list.h:83:9: note: in expansion
of macro ‘list_entry’
list_entry((ptr)->next, type, member)
...
src/cc/CMakeFiles/bpf-static.dir/build.make:209: recipe for target
'src/cc/CMakeFiles/bpf-static.dir/libbpf/src/xsk.c.o' failed
Commit 2f6324a3937f ("libbpf: Support shared umems between queues and devices")
added include file <linux/list.h>, which uses macro "container_of".
xsk.c file also includes <linux/ethtool.h> before <linux/list.h>.
In a more recent distro kernel, <linux/ethtool.h> includes <linux/kernel.h>
which contains the macro definition for "container_of". So compilation is all fine.
But in ubuntu 16.04 kernel, <linux/ethtool.h> does not contain <linux/kernel.h>
which caused the above compilation error.
Let explicitly add <linux/kernel.h> in xsk.c to avoid compilation error
in old distro's.
Fixes: 2f6324a3937f ("libbpf: Support shared umems between queues and devices")
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200914223210.1831262-1-yhs@fb.com
Diffstat (limited to 'tools/lib/bpf')
| -rw-r--r-- | tools/lib/bpf/xsk.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/lib/bpf/xsk.c b/tools/lib/bpf/xsk.c index 49c324594792..30b4ca5d2ac7 100644 --- a/tools/lib/bpf/xsk.c +++ b/tools/lib/bpf/xsk.c @@ -20,6 +20,7 @@ #include <linux/if_ether.h> #include <linux/if_packet.h> #include <linux/if_xdp.h> +#include <linux/kernel.h> #include <linux/list.h> #include <linux/sockios.h> #include <net/if.h> |