Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2017-12-28

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) Two small fixes for bpftool. Fix otherwise broken output if any of
   the system calls failed when listing maps in json format and instead
   of bailing out, skip maps or progs that disappeared between fetching
   next id and getting an fd for that id, both from Jakub.

2) Small fix in BPF selftests to respect LLC passed from command line
   when testing for -mcpu=probe presence, from Quentin.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 8 insertions, 4 deletions

diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index e2450c8e88e6..a8c3a33dd185 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -523,21 +523,23 @@ static int do_show(int argc, char **argv)
                                 break;
                         p_err("can't get next map: %s%s", strerror(errno),
                               errno == EINVAL ? " -- kernel too old?" : "");
-                        return -1;
+                        break;
                 }
 
                 fd = bpf_map_get_fd_by_id(id);
                 if (fd < 0) {
+                        if (errno == ENOENT)
+                                continue;
                         p_err("can't get map by id (%u): %s",
                               id, strerror(errno));
-                        return -1;
+                        break;
                 }
 
                 err = bpf_obj_get_info_by_fd(fd, &info, &len);
                 if (err) {
                         p_err("can't get map info: %s", strerror(errno));
                         close(fd);
-                        return -1;
+                        break;
                 }
 
                 if (json_output)
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index ad619b96c276..dded77345bfb 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -382,6 +382,8 @@ static int do_show(int argc, char **argv)
 
                 fd = bpf_prog_get_fd_by_id(id);
                 if (fd < 0) {
+                        if (errno == ENOENT)
+                                continue;
                         p_err("can't get prog by id (%u): %s",
                               id, strerror(errno));
                         err = -1;
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 05fc4e2e7b3a..9316e648a880 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -39,7 +39,7 @@ $(BPFOBJ): force
 CLANG ?= clang
 LLC   ?= llc
 
-PROBE := $(shell llc -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
+PROBE := $(shell $(LLC) -march=bpf -mcpu=probe -filetype=null /dev/null 2>&1)
 
 # Let newer LLVM versions transparently probe the kernel for availability
 # of full BPF instruction set.