Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Alexei Starovoitov says:

====================
pull-request: bpf-next 2022-03-21 v2

We've added 137 non-merge commits during the last 17 day(s) which contain
a total of 143 files changed, 7123 insertions(+), 1092 deletions(-).

The main changes are:

1) Custom SEC() handling in libbpf, from Andrii.

2) subskeleton support, from Delyan.

3) Use btf_tag to recognize __percpu pointers in the verifier, from Hao.

4) Fix net.core.bpf_jit_harden race, from Hou.

5) Fix bpf_sk_lookup remote_port on big-endian, from Jakub.

6) Introduce fprobe (multi kprobe) _without_ arch bits, from Masami.
The arch specific bits will come later.

7) Introduce multi_kprobe bpf programs on top of fprobe, from Jiri.

8) Enable non-atomic allocations in local storage, from Joanne.

9) Various var_off ptr_to_btf_id fixed, from Kumar.

10) bpf_ima_file_hash helper, from Roberto.

11) Add "live packet" mode for XDP in BPF_PROG_RUN, from Toke.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (137 commits)
  selftests/bpf: Fix kprobe_multi test.
  Revert "rethook: x86: Add rethook x86 implementation"
  Revert "arm64: rethook: Add arm64 rethook implementation"
  Revert "powerpc: Add rethook support"
  Revert "ARM: rethook: Add rethook arm implementation"
  bpftool: Fix a bug in subskeleton code generation
  bpf: Fix bpf_prog_pack when PMU_SIZE is not defined
  bpf: Fix bpf_prog_pack for multi-node setup
  bpf: Fix warning for cast from restricted gfp_t in verifier
  bpf, arm: Fix various typos in comments
  libbpf: Close fd in bpf_object__reuse_map
  bpftool: Fix print error when show bpf map
  bpf: Fix kprobe_multi return probe backtrace
  Revert "bpf: Add support to inline bpf_get_func_ip helper on x86"
  bpf: Simplify check in btf_parse_hdr()
  selftests/bpf/test_lirc_mode2.sh: Exit with proper code
  bpf: Check for NULL return from bpf_get_btf_vmlinux
  selftests/bpf: Test skipping stacktrace
  bpf: Adjust BPF stack helper functions to accommodate skip > 0
  bpf: Select proper size for bpf_prog_pack
  ...
====================

Link: https://lore.kernel.org/r/20220322050159.5507-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 0 insertions, 89 deletions

diff --git a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
index 2b255e28ed26..7ad66a247c02 100644
--- a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
+++ b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
@@ -10,8 +10,6 @@
  * to drop unexpected traffic.
  */
 
-#define _GNU_SOURCE
-
 #include <arpa/inet.h>
 #include <linux/if.h>
 #include <linux/if_tun.h>
@@ -19,10 +17,8 @@
 #include <linux/sysctl.h>
 #include <linux/time_types.h>
 #include <linux/net_tstamp.h>
-#include <sched.h>
 #include <stdbool.h>
 #include <stdio.h>
-#include <sys/mount.h>
 #include <sys/stat.h>
 #include <unistd.h>
 
@@ -92,91 +88,6 @@ static int write_file(const char *path, const char *newval)
 	return 0;
 }
 
-struct nstoken {
-	int orig_netns_fd;
-};
-
-static int setns_by_fd(int nsfd)
-{
-	int err;
-
-	err = setns(nsfd, CLONE_NEWNET);
-	close(nsfd);
-
-	if (!ASSERT_OK(err, "setns"))
-		return err;
-
-	/* Switch /sys to the new namespace so that e.g. /sys/class/net
-	 * reflects the devices in the new namespace.
-	 */
-	err = unshare(CLONE_NEWNS);
-	if (!ASSERT_OK(err, "unshare"))
-		return err;
-
-	/* Make our /sys mount private, so the following umount won't
-	 * trigger the global umount in case it's shared.
-	 */
-	err = mount("none", "/sys", NULL, MS_PRIVATE, NULL);
-	if (!ASSERT_OK(err, "remount private /sys"))
-		return err;
-
-	err = umount2("/sys", MNT_DETACH);
-	if (!ASSERT_OK(err, "umount2 /sys"))
-		return err;
-
-	err = mount("sysfs", "/sys", "sysfs", 0, NULL);
-	if (!ASSERT_OK(err, "mount /sys"))
-		return err;
-
-	err = mount("bpffs", "/sys/fs/bpf", "bpf", 0, NULL);
-	if (!ASSERT_OK(err, "mount /sys/fs/bpf"))
-		return err;
-
-	return 0;
-}
-
-/**
- * open_netns() - Switch to specified network namespace by name.
- *
- * Returns token with which to restore the original namespace
- * using close_netns().
- */
-static struct nstoken *open_netns(const char *name)
-{
-	int nsfd;
-	char nspath[PATH_MAX];
-	int err;
-	struct nstoken *token;
-
-	token = calloc(1, sizeof(struct nstoken));
-	if (!ASSERT_OK_PTR(token, "malloc token"))
-		return NULL;
-
-	token->orig_netns_fd = open("/proc/self/ns/net", O_RDONLY);
-	if (!ASSERT_GE(token->orig_netns_fd, 0, "open /proc/self/ns/net"))
-		goto fail;
-
-	snprintf(nspath, sizeof(nspath), "%s/%s", "/var/run/netns", name);
-	nsfd = open(nspath, O_RDONLY | O_CLOEXEC);
-	if (!ASSERT_GE(nsfd, 0, "open netns fd"))
-		goto fail;
-
-	err = setns_by_fd(nsfd);
-	if (!ASSERT_OK(err, "setns_by_fd"))
-		goto fail;
-
-	return token;
-fail:
-	free(token);
-	return NULL;
-}
-
-static void close_netns(struct nstoken *token)
-{
-	ASSERT_OK(setns_by_fd(token->orig_netns_fd), "setns_by_fd");
-	free(token);
-}
-
 static int netns_setup_namespaces(const char *verb)
 {
 	const char * const *ns = namespaces;