path: root/tools/testing/selftests/bpf/test_tcpbpf_user.c
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authorDavid S. Miller <davem@davemloft.net>2018-02-26 10:37:24 -0500
committerDavid S. Miller <davem@davemloft.net>2018-02-26 10:37:24 -0500
commitba6056a41cb09575a5ffe2fcfa9a0afb1b60eb92 (patch)
treee1858eb29573b86b6a42cbd3d6fbd18aa7b565bf /tools/testing/selftests/bpf/test_tcpbpf_user.c
parentf74290fdb363665538743d14c4f00aeacdb68d87 (diff)
parentc53507778998d45543b27266742d04cd384de356 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says: ==================== pull-request: bpf-next 2018-02-26 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Various improvements for BPF kselftests: i) skip unprivileged tests when kernel.unprivileged_bpf_disabled sysctl knob is set, ii) count the number of skipped tests from unprivileged, iii) when a test case had an unexpected error then print the actual but also the unexpected one for better comparison, from Joe. 2) Add a sample program for collecting CPU state statistics with regards to how long the CPU resides in cstate and pstate levels. Based on cpu_idle and cpu_frequency trace points, from Leo. 3) Various x64 BPF JIT optimizations to further shrink the generated image size in order to make it more icache friendly. When tested on the Cilium generated programs, image size reduced by approx 4-5% in best case mainly due to how LLVM emits unsigned 32 bit constants, from Daniel. 4) Improvements and fixes on the BPF sockmap sample programs: i) fix the sockmap's Makefile to include nlattr.o for libbpf, ii) detach the sock ops programs from the cgroup before exit, from Prashant. 5) Avoid including xdp.h in filter.h by just forward declaring the struct xdp_rxq_info in filter.h, from Jesper. 6) Fix the BPF kselftests Makefile for cgroup_helpers.c by only declaring it a dependency for test_dev_cgroup.c but not every other test case where it is not needed, from Jesper. 7) Adjust rlimit RLIMIT_MEMLOCK for test_tcpbpf_user selftest since the default is insufficient for creating the 'global_map' used in the corresponding BPF program, from Yonghong. 8) Likewise, for the xdp_redirect sample, Tushar ran into the same when invoking xdp_redirect and xdp_monitor at the same time, therefore in order to have the sample generically work bump the limit here, too. Fix from Tushar. 9) Avoid an unnecessary NULL check in BPF_CGROUP_RUN_PROG_INET_SOCK() since sk is always guaranteed to be non-NULL, from Yafang. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/testing/selftests/bpf/test_tcpbpf_user.c')
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_tcpbpf_user.c b/tools/testing/selftests/bpf/test_tcpbpf_user.c
index 95a370f3d378..5d73db416460 100644
--- a/tools/testing/selftests/bpf/test_tcpbpf_user.c
+++ b/tools/testing/selftests/bpf/test_tcpbpf_user.c
@@ -11,6 +11,8 @@
#include <linux/ptrace.h>
#include <linux/bpf.h>
#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <sys/resource.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
@@ -42,6 +44,7 @@ static int bpf_find_map(const char *test, struct bpf_object *obj,
int main(int argc, char **argv)
+ struct rlimit limit = { RLIM_INFINITY, RLIM_INFINITY };
const char *file = "test_tcpbpf_kern.o";
struct tcpbpf_globals g = {0};
int cg_fd, prog_fd, map_fd;
@@ -54,6 +57,9 @@ int main(int argc, char **argv)
int pid;
int rv;
+ if (setrlimit(RLIMIT_MEMLOCK, &limit) < 0)
+ perror("Unable to lift memlock rlimit");
if (argc > 1 && strcmp(argv[1], "-d") == 0)
debug_flag = true;