This series of patches move the commonly used bpf_printk macro to bpf_helpers.h which is already included in all BPF programs which defined that macro on their own.
Michal Rostecki (2): selftests: bpf: Move bpf_printk to bpf_helpers.h samples: bpf: Do not define bpf_printk macro
samples/bpf/hbm_kern.h | 12 +++--------- samples/bpf/hbm_out_kern.c | 2 ++ samples/bpf/tcp_basertt_kern.c | 7 ------- samples/bpf/tcp_bufs_kern.c | 7 ------- samples/bpf/tcp_clamp_kern.c | 7 ------- samples/bpf/tcp_cong_kern.c | 7 ------- samples/bpf/tcp_iw_kern.c | 7 ------- samples/bpf/tcp_rwnd_kern.c | 7 ------- samples/bpf/tcp_synrto_kern.c | 7 ------- samples/bpf/tcp_tos_reflect_kern.c | 7 ------- samples/bpf/xdp_sample_pkts_kern.c | 7 ------- tools/testing/selftests/bpf/bpf_helpers.h | 8 ++++++++ .../testing/selftests/bpf/progs/sockmap_parse_prog.c | 7 ------- .../selftests/bpf/progs/sockmap_tcp_msg_prog.c | 7 ------- .../selftests/bpf/progs/sockmap_verdict_prog.c | 7 ------- .../testing/selftests/bpf/progs/test_lwt_seg6local.c | 7 ------- .../testing/selftests/bpf/progs/test_xdp_noinline.c | 7 ------- tools/testing/selftests/bpf/test_sockmap_kern.h | 7 ------- 18 files changed, 13 insertions(+), 114 deletions(-)
bpf_printk is a macro which is commonly used to print out debug messages in BPF programs and it was copied in many selftests and samples. Since all of them include bpf_helpers.h, this change moves the macro there.
Signed-off-by: Michal Rostecki mrostecki@opensuse.org --- tools/testing/selftests/bpf/bpf_helpers.h | 8 ++++++++ tools/testing/selftests/bpf/progs/sockmap_parse_prog.c | 7 ------- tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c | 7 ------- tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c | 7 ------- tools/testing/selftests/bpf/progs/test_lwt_seg6local.c | 7 ------- tools/testing/selftests/bpf/progs/test_xdp_noinline.c | 7 ------- tools/testing/selftests/bpf/test_sockmap_kern.h | 7 ------- 7 files changed, 8 insertions(+), 42 deletions(-)
diff --git a/tools/testing/selftests/bpf/bpf_helpers.h b/tools/testing/selftests/bpf/bpf_helpers.h index 6e80b66d7fb1..f1c23fc05bce 100644 --- a/tools/testing/selftests/bpf/bpf_helpers.h +++ b/tools/testing/selftests/bpf/bpf_helpers.h @@ -8,6 +8,14 @@ */ #define SEC(NAME) __attribute__((section(NAME), used))
+/* helper macro to print out debug messages */ +#define bpf_printk(fmt, ...) \ +({ \ + char ____fmt[] = fmt; \ + bpf_trace_printk(____fmt, sizeof(____fmt), \ + ##__VA_ARGS__); \ +}) + /* helper functions called from eBPF programs written in C */ static void *(*bpf_map_lookup_elem)(void *map, const void *key) = (void *) BPF_FUNC_map_lookup_elem; diff --git a/tools/testing/selftests/bpf/progs/sockmap_parse_prog.c b/tools/testing/selftests/bpf/progs/sockmap_parse_prog.c index 0f92858f6226..ed3e4a551c57 100644 --- a/tools/testing/selftests/bpf/progs/sockmap_parse_prog.c +++ b/tools/testing/selftests/bpf/progs/sockmap_parse_prog.c @@ -5,13 +5,6 @@
int _version SEC("version") = 1;
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sk_skb1") int bpf_prog1(struct __sk_buff *skb) { diff --git a/tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c b/tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c index 12a7b5c82ed6..65fbfdb6cd3a 100644 --- a/tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c +++ b/tools/testing/selftests/bpf/progs/sockmap_tcp_msg_prog.c @@ -5,13 +5,6 @@
int _version SEC("version") = 1;
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sk_msg1") int bpf_prog1(struct sk_msg_md *msg) { diff --git a/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c b/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c index 2ce7634a4012..bdc22be46f2e 100644 --- a/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c +++ b/tools/testing/selftests/bpf/progs/sockmap_verdict_prog.c @@ -5,13 +5,6 @@
int _version SEC("version") = 1;
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - struct bpf_map_def SEC("maps") sock_map_rx = { .type = BPF_MAP_TYPE_SOCKMAP, .key_size = sizeof(int), diff --git a/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c b/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c index 0575751bc1bc..7c7cb3177463 100644 --- a/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c +++ b/tools/testing/selftests/bpf/progs/test_lwt_seg6local.c @@ -6,13 +6,6 @@ #include "bpf_helpers.h" #include "bpf_endian.h"
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - /* Packet parsing state machine helpers. */ #define cursor_advance(_cursor, _len) \ ({ void *_tmp = _cursor; _cursor += _len; _tmp; }) diff --git a/tools/testing/selftests/bpf/progs/test_xdp_noinline.c b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c index 5e4aac74f9d0..4fe6aaad22a4 100644 --- a/tools/testing/selftests/bpf/progs/test_xdp_noinline.c +++ b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c @@ -15,13 +15,6 @@ #include <linux/udp.h> #include "bpf_helpers.h"
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - static __u32 rol32(__u32 word, unsigned int shift) { return (word << shift) | (word >> ((-shift) & 31)); diff --git a/tools/testing/selftests/bpf/test_sockmap_kern.h b/tools/testing/selftests/bpf/test_sockmap_kern.h index e7639f66a941..4e7d3da21357 100644 --- a/tools/testing/selftests/bpf/test_sockmap_kern.h +++ b/tools/testing/selftests/bpf/test_sockmap_kern.h @@ -28,13 +28,6 @@ * are established and verdicts are decided. */
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - struct bpf_map_def SEC("maps") sock_map = { .type = TEST_MAP_TYPE, .key_size = sizeof(int),
The bpf_printk macro was moved to bpf_helpers.h which is included in all example programs.
Signed-off-by: Michal Rostecki mrostecki@opensuse.org --- samples/bpf/hbm_kern.h | 12 +++--------- samples/bpf/hbm_out_kern.c | 2 ++ samples/bpf/tcp_basertt_kern.c | 7 ------- samples/bpf/tcp_bufs_kern.c | 7 ------- samples/bpf/tcp_clamp_kern.c | 7 ------- samples/bpf/tcp_cong_kern.c | 7 ------- samples/bpf/tcp_iw_kern.c | 7 ------- samples/bpf/tcp_rwnd_kern.c | 7 ------- samples/bpf/tcp_synrto_kern.c | 7 ------- samples/bpf/tcp_tos_reflect_kern.c | 7 ------- samples/bpf/xdp_sample_pkts_kern.c | 7 ------- 11 files changed, 5 insertions(+), 72 deletions(-)
diff --git a/samples/bpf/hbm_kern.h b/samples/bpf/hbm_kern.h index c5635d924193..0ac6823abbb7 100644 --- a/samples/bpf/hbm_kern.h +++ b/samples/bpf/hbm_kern.h @@ -30,16 +30,8 @@ #define ALLOW_PKT 1 #define TCP_ECN_OK 1
+#ifndef HBM_DEBUG #define HBM_DEBUG 0 // Set to 1 to enable debugging -#if HBM_DEBUG -#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) -#else -#define bpf_printk(fmt, ...) #endif
#define INITIAL_CREDIT_PACKETS 100 @@ -102,7 +94,9 @@ static __always_inline void hbm_get_pkt_info(struct __sk_buff *skb,
static __always_inline void hbm_init_vqueue(struct hbm_vqueue *qdp, int rate) { +#if HBM_DEBUG bpf_printk("Initializing queue_state, rate:%d\n", rate * 128); +#endif qdp->lasttime = bpf_ktime_get_ns(); qdp->credit = INIT_CREDIT; qdp->rate = rate * 128; diff --git a/samples/bpf/hbm_out_kern.c b/samples/bpf/hbm_out_kern.c index f806863d0b79..4374583b4242 100644 --- a/samples/bpf/hbm_out_kern.c +++ b/samples/bpf/hbm_out_kern.c @@ -111,9 +111,11 @@ int _hbm_out_cg(struct __sk_buff *skb) // Check if we should update rate if (qsp != NULL && (qsp->rate * 128) != qdp->rate) { qdp->rate = qsp->rate * 128; +#if HBM_DEBUG bpf_printk("Updating rate: %d (1sec:%llu bits)\n", (int)qdp->rate, CREDIT_PER_NS(1000000000, qdp->rate) * 8); +#endif }
// Set flags (drop, congestion, cwr) diff --git a/samples/bpf/tcp_basertt_kern.c b/samples/bpf/tcp_basertt_kern.c index 6ef1625e8b2c..9dba48c2b920 100644 --- a/samples/bpf/tcp_basertt_kern.c +++ b/samples/bpf/tcp_basertt_kern.c @@ -21,13 +21,6 @@
#define DEBUG 1
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sockops") int bpf_basertt(struct bpf_sock_ops *skops) { diff --git a/samples/bpf/tcp_bufs_kern.c b/samples/bpf/tcp_bufs_kern.c index e03e204739fa..af8486f33771 100644 --- a/samples/bpf/tcp_bufs_kern.c +++ b/samples/bpf/tcp_bufs_kern.c @@ -22,13 +22,6 @@
#define DEBUG 1
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sockops") int bpf_bufs(struct bpf_sock_ops *skops) { diff --git a/samples/bpf/tcp_clamp_kern.c b/samples/bpf/tcp_clamp_kern.c index a0dc2d254aca..26c0fd091f3c 100644 --- a/samples/bpf/tcp_clamp_kern.c +++ b/samples/bpf/tcp_clamp_kern.c @@ -22,13 +22,6 @@
#define DEBUG 1
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sockops") int bpf_clamp(struct bpf_sock_ops *skops) { diff --git a/samples/bpf/tcp_cong_kern.c b/samples/bpf/tcp_cong_kern.c index 4fd3ca979a06..6d4dc4c7dd1e 100644 --- a/samples/bpf/tcp_cong_kern.c +++ b/samples/bpf/tcp_cong_kern.c @@ -21,13 +21,6 @@
#define DEBUG 1
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sockops") int bpf_cong(struct bpf_sock_ops *skops) { diff --git a/samples/bpf/tcp_iw_kern.c b/samples/bpf/tcp_iw_kern.c index 9b139ec69560..da61d53378b3 100644 --- a/samples/bpf/tcp_iw_kern.c +++ b/samples/bpf/tcp_iw_kern.c @@ -22,13 +22,6 @@
#define DEBUG 1
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sockops") int bpf_iw(struct bpf_sock_ops *skops) { diff --git a/samples/bpf/tcp_rwnd_kern.c b/samples/bpf/tcp_rwnd_kern.c index cc71ee96e044..d011e38b80d2 100644 --- a/samples/bpf/tcp_rwnd_kern.c +++ b/samples/bpf/tcp_rwnd_kern.c @@ -21,13 +21,6 @@
#define DEBUG 1
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sockops") int bpf_rwnd(struct bpf_sock_ops *skops) { diff --git a/samples/bpf/tcp_synrto_kern.c b/samples/bpf/tcp_synrto_kern.c index ca87ed34f896..720d1950322d 100644 --- a/samples/bpf/tcp_synrto_kern.c +++ b/samples/bpf/tcp_synrto_kern.c @@ -21,13 +21,6 @@
#define DEBUG 1
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sockops") int bpf_synrto(struct bpf_sock_ops *skops) { diff --git a/samples/bpf/tcp_tos_reflect_kern.c b/samples/bpf/tcp_tos_reflect_kern.c index de788be6f862..369faca70a15 100644 --- a/samples/bpf/tcp_tos_reflect_kern.c +++ b/samples/bpf/tcp_tos_reflect_kern.c @@ -20,13 +20,6 @@
#define DEBUG 1
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - SEC("sockops") int bpf_basertt(struct bpf_sock_ops *skops) { diff --git a/samples/bpf/xdp_sample_pkts_kern.c b/samples/bpf/xdp_sample_pkts_kern.c index f7ca8b850978..6c7c7e0aaeda 100644 --- a/samples/bpf/xdp_sample_pkts_kern.c +++ b/samples/bpf/xdp_sample_pkts_kern.c @@ -7,13 +7,6 @@ #define SAMPLE_SIZE 64ul #define MAX_CPUS 128
-#define bpf_printk(fmt, ...) \ -({ \ - char ____fmt[] = fmt; \ - bpf_trace_printk(____fmt, sizeof(____fmt), \ - ##__VA_ARGS__); \ -}) - struct bpf_map_def SEC("maps") my_map = { .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY, .key_size = sizeof(int),
On Thu, May 16, 2019 at 4:21 AM Michal Rostecki mrostecki@opensuse.org wrote:
This series of patches move the commonly used bpf_printk macro to bpf_helpers.h which is already included in all BPF programs which defined that macro on their own.
makes sense, but it needs to wait until bpf-next reopens.
On Thu, May 16, 2019 at 11:43:03AM -0700, Alexei Starovoitov wrote:
On Thu, May 16, 2019 at 4:21 AM Michal Rostecki mrostecki@opensuse.org wrote:
This series of patches move the commonly used bpf_printk macro to bpf_helpers.h which is already included in all BPF programs which defined that macro on their own.
makes sense, but it needs to wait until bpf-next reopens.
Sorry for that! Please apply the v2 patch when bpf-next repoens.
linux-kselftest-mirror@lists.linaro.org
-
Alexei Starovoitov -
Michal Rostecki