diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-15 15:04:25 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-15 15:04:25 -0700 |
commit | 9a76aba02a37718242d7cdc294f0a3901928aa57 (patch) | |
tree | 2040d038f85d2120f21af83b0793efd5af1864e3 /tools/testing/selftests/bpf/test_cgroup_storage.c | |
parent | 0a957467c5fd46142bc9c52758ffc552d4c5e2f7 (diff) | |
parent | 26a1ccc6c117be8e33e0410fce8c5298b0015b99 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
"Highlights:
- Gustavo A. R. Silva keeps working on the implicit switch fallthru
changes.
- Support 802.11ax High-Efficiency wireless in cfg80211 et al, From
Luca Coelho.
- Re-enable ASPM in r8169, from Kai-Heng Feng.
- Add virtual XFRM interfaces, which avoids all of the limitations of
existing IPSEC tunnels. From Steffen Klassert.
- Convert GRO over to use a hash table, so that when we have many
flows active we don't traverse a long list during accumluation.
- Many new self tests for routing, TC, tunnels, etc. Too many
contributors to mention them all, but I'm really happy to keep
seeing this stuff.
- Hardware timestamping support for dpaa_eth/fsl-fman from Yangbo Lu.
- Lots of cleanups and fixes in L2TP code from Guillaume Nault.
- Add IPSEC offload support to netdevsim, from Shannon Nelson.
- Add support for slotting with non-uniform distribution to netem
packet scheduler, from Yousuk Seung.
- Add UDP GSO support to mlx5e, from Boris Pismenny.
- Support offloading of Team LAG in NFP, from John Hurley.
- Allow to configure TX queue selection based upon RX queue, from
Amritha Nambiar.
- Support ethtool ring size configuration in aquantia, from Anton
Mikaev.
- Support DSCP and flowlabel per-transport in SCTP, from Xin Long.
- Support list based batching and stack traversal of SKBs, this is
very exciting work. From Edward Cree.
- Busyloop optimizations in vhost_net, from Toshiaki Makita.
- Introduce the ETF qdisc, which allows time based transmissions. IGB
can offload this in hardware. From Vinicius Costa Gomes.
- Add parameter support to devlink, from Moshe Shemesh.
- Several multiplication and division optimizations for BPF JIT in
nfp driver, from Jiong Wang.
- Lots of prepatory work to make more of the packet scheduler layer
lockless, when possible, from Vlad Buslov.
- Add ACK filter and NAT awareness to sch_cake packet scheduler, from
Toke Høiland-Jørgensen.
- Support regions and region snapshots in devlink, from Alex Vesker.
- Allow to attach XDP programs to both HW and SW at the same time on
a given device, with initial support in nfp. From Jakub Kicinski.
- Add TLS RX offload and support in mlx5, from Ilya Lesokhin.
- Use PHYLIB in r8169 driver, from Heiner Kallweit.
- All sorts of changes to support Spectrum 2 in mlxsw driver, from
Ido Schimmel.
- PTP support in mv88e6xxx DSA driver, from Andrew Lunn.
- Make TCP_USER_TIMEOUT socket option more accurate, from Jon
Maxwell.
- Support for templates in packet scheduler classifier, from Jiri
Pirko.
- IPV6 support in RDS, from Ka-Cheong Poon.
- Native tproxy support in nf_tables, from Máté Eckl.
- Maintain IP fragment queue in an rbtree, but optimize properly for
in-order frags. From Peter Oskolkov.
- Improvde handling of ACKs on hole repairs, from Yuchung Cheng"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1996 commits)
bpf: test: fix spelling mistake "REUSEEPORT" -> "REUSEPORT"
hv/netvsc: Fix NULL dereference at single queue mode fallback
net: filter: mark expected switch fall-through
xen-netfront: fix warn message as irq device name has '/'
cxgb4: Add new T5 PCI device ids 0x50af and 0x50b0
net: dsa: mv88e6xxx: missing unlock on error path
rds: fix building with IPV6=m
inet/connection_sock: prefer _THIS_IP_ to current_text_addr
net: dsa: mv88e6xxx: bitwise vs logical bug
net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd()
ieee802154: hwsim: using right kind of iteration
net: hns3: Add vlan filter setting by ethtool command -K
net: hns3: Set tx ring' tc info when netdev is up
net: hns3: Remove tx ring BD len register in hns3_enet
net: hns3: Fix desc num set to default when setting channel
net: hns3: Fix for phy link issue when using marvell phy driver
net: hns3: Fix for information of phydev lost problem when down/up
net: hns3: Fix for command format parsing error in hclge_is_all_function_id_zero
net: hns3: Add support for serdes loopback selftest
bnxt_en: take coredump_record structure off stack
...
Diffstat (limited to 'tools/testing/selftests/bpf/test_cgroup_storage.c')
-rw-r--r-- | tools/testing/selftests/bpf/test_cgroup_storage.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_cgroup_storage.c b/tools/testing/selftests/bpf/test_cgroup_storage.c new file mode 100644 index 000000000000..dc83fb2d3f27 --- /dev/null +++ b/tools/testing/selftests/bpf/test_cgroup_storage.c @@ -0,0 +1,130 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <assert.h> +#include <bpf/bpf.h> +#include <linux/filter.h> +#include <stdio.h> +#include <stdlib.h> + +#include "cgroup_helpers.h" + +char bpf_log_buf[BPF_LOG_BUF_SIZE]; + +#define TEST_CGROUP "/test-bpf-cgroup-storage-buf/" + +int main(int argc, char **argv) +{ + struct bpf_insn prog[] = { + BPF_LD_MAP_FD(BPF_REG_1, 0), /* map fd */ + BPF_MOV64_IMM(BPF_REG_2, 0), /* flags, not used */ + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, + BPF_FUNC_get_local_storage), + BPF_MOV64_IMM(BPF_REG_1, 1), + BPF_STX_XADD(BPF_DW, BPF_REG_0, BPF_REG_1, 0), + BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0), + BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x1), + BPF_MOV64_REG(BPF_REG_0, BPF_REG_1), + BPF_EXIT_INSN(), + }; + size_t insns_cnt = sizeof(prog) / sizeof(struct bpf_insn); + int error = EXIT_FAILURE; + int map_fd, prog_fd, cgroup_fd; + struct bpf_cgroup_storage_key key; + unsigned long long value; + + map_fd = bpf_create_map(BPF_MAP_TYPE_CGROUP_STORAGE, sizeof(key), + sizeof(value), 0, 0); + if (map_fd < 0) { + printf("Failed to create map: %s\n", strerror(errno)); + goto out; + } + + prog[0].imm = map_fd; + prog_fd = bpf_load_program(BPF_PROG_TYPE_CGROUP_SKB, + prog, insns_cnt, "GPL", 0, + bpf_log_buf, BPF_LOG_BUF_SIZE); + if (prog_fd < 0) { + printf("Failed to load bpf program: %s\n", bpf_log_buf); + goto out; + } + + if (setup_cgroup_environment()) { + printf("Failed to setup cgroup environment\n"); + goto err; + } + + /* Create a cgroup, get fd, and join it */ + cgroup_fd = create_and_get_cgroup(TEST_CGROUP); + if (!cgroup_fd) { + printf("Failed to create test cgroup\n"); + goto err; + } + + if (join_cgroup(TEST_CGROUP)) { + printf("Failed to join cgroup\n"); + goto err; + } + + /* Attach the bpf program */ + if (bpf_prog_attach(prog_fd, cgroup_fd, BPF_CGROUP_INET_EGRESS, 0)) { + printf("Failed to attach bpf program\n"); + goto err; + } + + if (bpf_map_get_next_key(map_fd, NULL, &key)) { + printf("Failed to get the first key in cgroup storage\n"); + goto err; + } + + if (bpf_map_lookup_elem(map_fd, &key, &value)) { + printf("Failed to lookup cgroup storage\n"); + goto err; + } + + /* Every second packet should be dropped */ + assert(system("ping localhost -c 1 -W 1 -q > /dev/null") == 0); + assert(system("ping localhost -c 1 -W 1 -q > /dev/null")); + assert(system("ping localhost -c 1 -W 1 -q > /dev/null") == 0); + + /* Check the counter in the cgroup local storage */ + if (bpf_map_lookup_elem(map_fd, &key, &value)) { + printf("Failed to lookup cgroup storage\n"); + goto err; + } + + if (value != 3) { + printf("Unexpected data in the cgroup storage: %llu\n", value); + goto err; + } + + /* Bump the counter in the cgroup local storage */ + value++; + if (bpf_map_update_elem(map_fd, &key, &value, 0)) { + printf("Failed to update the data in the cgroup storage\n"); + goto err; + } + + /* Every second packet should be dropped */ + assert(system("ping localhost -c 1 -W 1 -q > /dev/null") == 0); + assert(system("ping localhost -c 1 -W 1 -q > /dev/null")); + assert(system("ping localhost -c 1 -W 1 -q > /dev/null") == 0); + + /* Check the final value of the counter in the cgroup local storage */ + if (bpf_map_lookup_elem(map_fd, &key, &value)) { + printf("Failed to lookup the cgroup storage\n"); + goto err; + } + + if (value != 7) { + printf("Unexpected data in the cgroup storage: %llu\n", value); + goto err; + } + + error = 0; + printf("test_cgroup_storage:PASS\n"); + +err: + cleanup_cgroup_environment(); + +out: + return error; +} |