pping/Makefile

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

USER_TARGETS   := pping
BPF_TARGETS    := pping_kern

LDLIBS     += -pthread
EXTRA_DEPS += pping.h pping_debug_cleanup.h

LIB_DIR = ../lib

include $(LIB_DIR)/common.mk
pping: Start pping implementation Add a XDP program to parse TCP timestamps and a simple loader Signed-off-by: Simon Sundberg <simon.sundberg@kau.se> 2020-12-11 19:25:35 +01:00			`# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)`

pping: TC-BPF use BTF map if iproute has libbpf Copy setup from traffic-pacing-edt to use BTF-defined map if configure detects that iproute2 has libbpf support, otherwise fall back on bpf_elf_map. Also fix a minor bug with setting default value for SEC in bpf_egress_loader.sh. Signed-off-by: Simon Sundberg <simon.sundberg@kau.se> 2021-01-25 20:40:57 +01:00			`USER_TARGETS := pping`
pping: Major refactor and add -f and -c options Merge the pping_kern_tc.c, pping_kern_xdp.c and pping_helpers.h into the single file pping_kern.c. Do not change any of the BPF code, except renaming the map ts_start to packet_ts. To handle both BPF programs kept in single ELF-file, change loading mechanism to extract and attach both tc and XDP programs from it. Also refactor main-method into several smaller functions to reduce its size. Finally, added the --force (-f) and --cleanup-interval (-c) options to the argument parsing, and improved the parsing of the --rate-limit (-r) option. NOTE: The verifier rejects program in it's current state as too large (over 1 million instructions). Setting the TCP_MAX_OPTIONS in pping_kern.c to 5 (or less) solves this. Unsure at the moment what causes the verifier to think the program is so large, as the code in pping_kern.c is identical to the one from the three files it was merged from. Signed-off-by: Simon Sundberg <simon.sundberg@kau.se> 2021-04-15 14:13:54 +02:00			`BPF_TARGETS := pping_kern`
pping: Start pping implementation Add a XDP program to parse TCP timestamps and a simple loader Signed-off-by: Simon Sundberg <simon.sundberg@kau.se> 2020-12-11 19:25:35 +01:00
pping: Refactor json code and format Use a JSON-writer library from iproute instead of complicated printf statement. Also output timestamp, rtt and min_rtt as integers in nanoseconds, rather than floats in seconds. Signed-off-by: Simon Sundberg <simon.sundberg@kau.se> 2021-06-22 15:02:34 +02:00			`LDLIBS += -pthread`
pping: Add map cleanup debug info Add some debug info to the periodical map cleanup process. Push debug information through the events perf buffer by using newly added map_clean_event. The old user space map cleanup process had some simple debug information that was lost when transitioning to using bpf_iter instead. Therefore, add back similar (but more extensive) debug information but now collected from the BPF-side. In addition to stats on entries deleted by the cleanup process, also include stats on entries deleted by ePPing itself due to matching (for timestamp entries) or detecting FIN/RST (for flow entries) Signed-off-by: Simon Sundberg <simon.sundberg@kau.se> 2022-02-17 14:01:08 +01:00			`EXTRA_DEPS += pping.h pping_debug_cleanup.h`
pping: Add perf-buffer The XDP program pushes the calculated RTTs to userspace through the perf-buffer and the userspace program polls it to print them out Signed-off-by: Simon Sundberg <simon.sundberg@kau.se> 2021-01-07 18:14:27 +01:00
pping: Start pping implementation Add a XDP program to parse TCP timestamps and a simple loader Signed-off-by: Simon Sundberg <simon.sundberg@kau.se> 2020-12-11 19:25:35 +01:00			`LIB_DIR = ../lib`

			`include $(LIB_DIR)/common.mk`