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authorLinus Torvalds <torvalds@linux-foundation.org>2024-07-16 19:28:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2024-07-16 19:28:34 -0700
commit51835949dda3783d4639cfa74ce13a3c9829de00 (patch)
tree2b593de5eba6ecc73f7c58fc65fdaffae45c7323 /tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
parent0434dbe32053d07d658165be681505120c6b1abc (diff)
parent77ae5e5b00720372af2860efdc4bc652ac682696 (diff)
Merge tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextHEADmaster
Pull networking updates from Jakub Kicinski: "Not much excitement - a handful of large patchsets (devmem among them) did not make it in time. Core & protocols: - Use local_lock in addition to local_bh_disable() to protect per-CPU resources in networking, a step closer for local_bh_disable() not to act as a big lock on PREEMPT_RT - Use flex array for netdevice priv area, ensure its cache alignment - Add a sysctl knob to allow user to specify a default rto_min at socket init time. Bit of a big hammer but multiple companies were independently carrying such patch downstream so clearly it's useful - Support scheduling transmission of packets based on CLOCK_TAI - Un-pin TCP TIMEWAIT timer to avoid it firing on CPUs later cordoned off using cpusets - Support multiple L2TPv3 UDP tunnels using the same 5-tuple address - Allow configuration of multipath hash seed, to both allow synchronizing hashing of two routers, and preventing partial accidental sync - Improve TCP compliance with RFC 9293 for simultaneous connect() - Support sending NAT keepalives in IPsec ESP in UDP states. Userspace IKE daemon had to do this before, but the kernel can better keep track of it - Support sending supervision HSR frames with MAC addresses stored in ProxyNodeTable when RedBox (i.e. HSR-SAN) is enabled - Introduce IPPROTO_SMC for selecting SMC when socket is created - Allow UDP GSO transmit from devices with no checksum offload - openvswitch: add packet sampling via psample, separating the sampled traffic from "upcall" packets sent to user space for forwarding - nf_tables: shrink memory consumption for transaction objects Things we sprinkled into general kernel code: - Power Sequencing subsystem (used by Qualcomm Bluetooth driver for QCA6390) [ Already merged separately - Linus ] - Add IRQ information in sysfs for auxiliary bus - Introduce guard definition for local_lock - Add aligned flavor of __cacheline_group_{begin, end}() markings for grouping fields in structures BPF: - Notify user space (via epoll) when a struct_ops object is getting detached/unregistered - Add new kfuncs for a generic, open-coded bits iterator - Enable BPF programs to declare arrays of kptr, bpf_rb_root, and bpf_list_head - Support resilient split BTF which cuts down on duplication and makes BTF as compact as possible WRT BTF from modules - Add support for dumping kfunc prototypes from BTF which enables both detecting as well as dumping compilable prototypes for kfuncs - riscv64 BPF JIT improvements in particular to add 12-argument support for BPF trampolines and to utilize bpf_prog_pack for the latter - Add the capability to offload the netfilter flowtable in XDP layer through kfuncs Driver API: - Allow users to configure IRQ tresholds between which automatic IRQ moderation can choose - Expand Power Sourcing (PoE) status with power, class and failure reason. Support setting power limits - Track additional RSS contexts in the core, make sure configuration changes don't break them - Support IPsec crypto offload for IPv6 ESP and IPv4 UDP-encapsulated ESP data paths - Support updating firmware on SFP modules Tests and tooling: - mptcp: use net/lib.sh to manage netns - TCP-AO and TCP-MD5: replace debug prints used by tests with tracepoints - openvswitch: make test self-contained (don't depend on OvS CLI tools) Drivers: - Ethernet high-speed NICs: - Broadcom (bnxt): - increase the max total outstanding PTP TX packets to 4 - add timestamping statistics support - implement netdev_queue_mgmt_ops - support new RSS context API - Intel (100G, ice, idpf): - implement FEC statistics and dumping signal quality indicators - support E825C products (with 56Gbps PHYs) - nVidia/Mellanox: - support HW-GRO - mlx4/mlx5: support per-queue statistics via netlink - obey the max number of EQs setting in sub-functions - AMD/Solarflare: - support new RSS context API - AMD/Pensando: - ionic: rework fix for doorbell miss to lower overhead and skip it on new HW - Wangxun: - txgbe: support Flow Director perfect filters - Ethernet NICs consumer, embedded and virtual: - Add driver for Tehuti Networks TN40xx chips - Add driver for Meta's internal NIC chips - Add driver for Ethernet MAC on Airoha EN7581 SoCs - Add driver for Renesas Ethernet-TSN devices - Google cloud vNIC: - flow steering support - Microsoft vNIC: - support page sizes other than 4KB on ARM64 - vmware vNIC: - support latency measurement (update to version 9) - VirtIO net: - support for Byte Queue Limits - support configuring thresholds for automatic IRQ moderation - support for AF_XDP Rx zero-copy - Synopsys (stmmac): - support for STM32MP13 SoC - let platforms select the right PCS implementation - TI: - icssg-prueth: add multicast filtering support - icssg-prueth: enable PTP timestamping and PPS - Renesas: - ravb: improve Rx performance 30-400% by using page pool, theaded NAPI and timer-based IRQ coalescing - ravb: add MII support for R-Car V4M - Cadence (macb): - macb: add ARP support to Wake-On-LAN - Cortina: - use phylib for RX and TX pause configuration - Ethernet switches: - nVidia/Mellanox: - support configuration of multipath hash seed - report more accurate max MTU - use page_pool to improve Rx performance - MediaTek: - mt7530: add support for bridge port isolation - Qualcomm: - qca8k: add support for bridge port isolation - Microchip: - lan9371/2: add 100BaseTX PHY support - NXP: - vsc73xx: implement VLAN operations - Ethernet PHYs: - aquantia: enable support for aqr115c - aquantia: add support for PHY LEDs - realtek: add support for rtl8224 2.5Gbps PHY - xpcs: add memory-mapped device support - add BroadR-Reach link mode and support in Broadcom's PHY driver - CAN: - add document for ISO 15765-2 protocol support - mcp251xfd: workaround for erratum DS80000789E, use timestamps to catch when device returns incorrect FIFO status - WiFi: - mac80211/cfg80211: - parse Transmit Power Envelope (TPE) data in mac80211 instead of in drivers - improvements for 6 GHz regulatory flexibility - multi-link improvements - support multiple radios per wiphy - remove DEAUTH_NEED_MGD_TX_PREP flag - Intel (iwlwifi): - bump FW API to 91 for BZ/SC devices - report 64-bit radiotap timestamp - enable P2P low latency by default - handle Transmit Power Envelope (TPE) advertised by AP - remove support for older FW for new devices - fast resume (keeping the device configured) - mvm: re-enable Multi-Link Operation (MLO) - aggregation (A-MSDU) optimizations - MediaTek (mt76): - mt7925 Multi-Link Operation (MLO) support - Qualcomm (ath10k): - LED support for various chipsets - Qualcomm (ath12k): - remove unsupported Tx monitor handling - support channel 2 in 6 GHz band - support Spatial Multiplexing Power Save (SMPS) in 6 GHz band - supprt multiple BSSID (MBSSID) and Enhanced Multi-BSSID Advertisements (EMA) - support dynamic VLAN - add panic handler for resetting the firmware state - DebugFS support for datapath statistics - WCN7850: support for Wake on WLAN - Microchip (wilc1000): - read MAC address during probe to make it visible to user space - suspend/resume improvements - TI (wl18xx): - support newer firmware versions - RealTek (rtw89): - preparation for RTL8852BE-VT support - Wake on WLAN support for WiFi 6 chips - 36-bit PCI DMA support - RealTek (rtlwifi): - RTL8192DU support - Broadcom (brcmfmac): - Management Frame Protection support (to enable WPA3) - Bluetooth: - qualcomm: use the power sequencer for QCA6390 - btusb: mediatek: add ISO data transmission functions - hci_bcm4377: add BCM4388 support - btintel: add support for BlazarU core - btintel: add support for Whale Peak2 - btnxpuart: add support for AW693 A1 chipset - btnxpuart: add support for IW615 chipset - btusb: add Realtek RTL8852BE support ID 0x13d3:0x3591" * tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1589 commits) eth: fbnic: Fix spelling mistake "tiggerring" -> "triggering" tcp: Replace strncpy() with strscpy() wifi: ath12k: fix build vs old compiler tcp: Don't access uninit tcp_rsk(req)->ao_keyid in tcp_create_openreq_child(). eth: fbnic: Write the TCAM tables used for RSS control and Rx to host eth: fbnic: Add L2 address programming eth: fbnic: Add basic Rx handling eth: fbnic: Add basic Tx handling eth: fbnic: Add link detection eth: fbnic: Add initial messaging to notify FW of our presence eth: fbnic: Implement Rx queue alloc/start/stop/free eth: fbnic: Implement Tx queue alloc/start/stop/free eth: fbnic: Allocate a netdevice and napi vectors with queues eth: fbnic: Add FW communication mechanism eth: fbnic: Add message parsing for FW messages eth: fbnic: Add register init to set PCIe/Ethernet device config eth: fbnic: Allocate core device specific structures and devlink interface eth: fbnic: Add scaffolding for Meta's NIC driver PCI: Add Meta Platforms vendor ID net/sched: cls_flower: propagate tca[TCA_OPTIONS] to NL_REQ_ATTR_CHECK ...
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c')
-rw-r--r--tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c247
1 files changed, 191 insertions, 56 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
index 0aca02532794..63422f4f3896 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
@@ -23,6 +23,11 @@
static const unsigned int total_bytes = 10 * 1024 * 1024;
static int expected_stg = 0xeB9F;
+struct cb_opts {
+ const char *cc;
+ int map_fd;
+};
+
static int settcpca(int fd, const char *tcp_ca)
{
int err;
@@ -34,55 +39,66 @@ static int settcpca(int fd, const char *tcp_ca)
return 0;
}
-static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map)
+static bool start_test(char *addr_str,
+ const struct network_helper_opts *srv_opts,
+ const struct network_helper_opts *cli_opts,
+ int *srv_fd, int *cli_fd)
{
- int lfd = -1, fd = -1;
- int err;
+ *srv_fd = start_server_str(AF_INET6, SOCK_STREAM, addr_str, 0, srv_opts);
+ if (!ASSERT_NEQ(*srv_fd, -1, "start_server_str"))
+ goto err;
- lfd = start_server(AF_INET6, SOCK_STREAM, NULL, 0, 0);
- if (!ASSERT_NEQ(lfd, -1, "socket"))
- return;
-
- fd = socket(AF_INET6, SOCK_STREAM, 0);
- if (!ASSERT_NEQ(fd, -1, "socket")) {
- close(lfd);
- return;
- }
+ /* connect to server */
+ *cli_fd = connect_to_fd_opts(*srv_fd, SOCK_STREAM, cli_opts);
+ if (!ASSERT_NEQ(*cli_fd, -1, "connect_to_fd_opts"))
+ goto err;
- if (settcpca(lfd, tcp_ca) || settcpca(fd, tcp_ca))
- goto done;
+ return true;
- if (sk_stg_map) {
- err = bpf_map_update_elem(bpf_map__fd(sk_stg_map), &fd,
- &expected_stg, BPF_NOEXIST);
- if (!ASSERT_OK(err, "bpf_map_update_elem(sk_stg_map)"))
- goto done;
+err:
+ if (*srv_fd != -1) {
+ close(*srv_fd);
+ *srv_fd = -1;
}
+ if (*cli_fd != -1) {
+ close(*cli_fd);
+ *cli_fd = -1;
+ }
+ return false;
+}
- /* connect to server */
- err = connect_fd_to_fd(fd, lfd, 0);
- if (!ASSERT_NEQ(err, -1, "connect"))
- goto done;
-
- if (sk_stg_map) {
- int tmp_stg;
+static void do_test(const struct network_helper_opts *opts)
+{
+ int lfd = -1, fd = -1;
- err = bpf_map_lookup_elem(bpf_map__fd(sk_stg_map), &fd,
- &tmp_stg);
- if (!ASSERT_ERR(err, "bpf_map_lookup_elem(sk_stg_map)") ||
- !ASSERT_EQ(errno, ENOENT, "bpf_map_lookup_elem(sk_stg_map)"))
- goto done;
- }
+ if (!start_test(NULL, opts, opts, &lfd, &fd))
+ goto done;
ASSERT_OK(send_recv_data(lfd, fd, total_bytes), "send_recv_data");
done:
- close(lfd);
- close(fd);
+ if (lfd != -1)
+ close(lfd);
+ if (fd != -1)
+ close(fd);
+}
+
+static int cc_cb(int fd, void *opts)
+{
+ struct cb_opts *cb_opts = (struct cb_opts *)opts;
+
+ return settcpca(fd, cb_opts->cc);
}
static void test_cubic(void)
{
+ struct cb_opts cb_opts = {
+ .cc = "bpf_cubic",
+ };
+ struct network_helper_opts opts = {
+ .post_socket_cb = cc_cb,
+ .cb_opts = &cb_opts,
+ };
struct bpf_cubic *cubic_skel;
struct bpf_link *link;
@@ -96,7 +112,7 @@ static void test_cubic(void)
return;
}
- do_test("bpf_cubic", NULL);
+ do_test(&opts);
ASSERT_EQ(cubic_skel->bss->bpf_cubic_acked_called, 1, "pkts_acked called");
@@ -104,8 +120,37 @@ static void test_cubic(void)
bpf_cubic__destroy(cubic_skel);
}
+static int stg_post_socket_cb(int fd, void *opts)
+{
+ struct cb_opts *cb_opts = (struct cb_opts *)opts;
+ int err;
+
+ err = settcpca(fd, cb_opts->cc);
+ if (err)
+ return err;
+
+ err = bpf_map_update_elem(cb_opts->map_fd, &fd,
+ &expected_stg, BPF_NOEXIST);
+ if (!ASSERT_OK(err, "bpf_map_update_elem(sk_stg_map)"))
+ return err;
+
+ return 0;
+}
+
static void test_dctcp(void)
{
+ struct cb_opts cb_opts = {
+ .cc = "bpf_dctcp",
+ };
+ struct network_helper_opts opts = {
+ .post_socket_cb = cc_cb,
+ .cb_opts = &cb_opts,
+ };
+ struct network_helper_opts cli_opts = {
+ .post_socket_cb = stg_post_socket_cb,
+ .cb_opts = &cb_opts,
+ };
+ int lfd = -1, fd = -1, tmp_stg, err;
struct bpf_dctcp *dctcp_skel;
struct bpf_link *link;
@@ -119,11 +164,58 @@ static void test_dctcp(void)
return;
}
- do_test("bpf_dctcp", dctcp_skel->maps.sk_stg_map);
+ cb_opts.map_fd = bpf_map__fd(dctcp_skel->maps.sk_stg_map);
+ if (!start_test(NULL, &opts, &cli_opts, &lfd, &fd))
+ goto done;
+
+ err = bpf_map_lookup_elem(cb_opts.map_fd, &fd, &tmp_stg);
+ if (!ASSERT_ERR(err, "bpf_map_lookup_elem(sk_stg_map)") ||
+ !ASSERT_EQ(errno, ENOENT, "bpf_map_lookup_elem(sk_stg_map)"))
+ goto done;
+
+ ASSERT_OK(send_recv_data(lfd, fd, total_bytes), "send_recv_data");
ASSERT_EQ(dctcp_skel->bss->stg_result, expected_stg, "stg_result");
+done:
bpf_link__destroy(link);
bpf_dctcp__destroy(dctcp_skel);
+ if (lfd != -1)
+ close(lfd);
+ if (fd != -1)
+ close(fd);
+}
+
+static void test_dctcp_autoattach_map(void)
+{
+ struct cb_opts cb_opts = {
+ .cc = "bpf_dctcp",
+ };
+ struct network_helper_opts opts = {
+ .post_socket_cb = cc_cb,
+ .cb_opts = &cb_opts,
+ };
+ struct bpf_dctcp *dctcp_skel;
+ struct bpf_link *link;
+
+ dctcp_skel = bpf_dctcp__open_and_load();
+ if (!ASSERT_OK_PTR(dctcp_skel, "bpf_dctcp__open_and_load"))
+ return;
+
+ bpf_map__set_autoattach(dctcp_skel->maps.dctcp, true);
+ bpf_map__set_autoattach(dctcp_skel->maps.dctcp_nouse, false);
+
+ if (!ASSERT_OK(bpf_dctcp__attach(dctcp_skel), "bpf_dctcp__attach"))
+ goto destroy;
+
+ /* struct_ops is auto-attached */
+ link = dctcp_skel->links.dctcp;
+ if (!ASSERT_OK_PTR(link, "link"))
+ goto destroy;
+
+ do_test(&opts);
+
+destroy:
+ bpf_dctcp__destroy(dctcp_skel);
}
static char *err_str;
@@ -171,11 +263,22 @@ static void test_invalid_license(void)
static void test_dctcp_fallback(void)
{
int err, lfd = -1, cli_fd = -1, srv_fd = -1;
- struct network_helper_opts opts = {
- .cc = "cubic",
- };
struct bpf_dctcp *dctcp_skel;
struct bpf_link *link = NULL;
+ struct cb_opts dctcp = {
+ .cc = "bpf_dctcp",
+ };
+ struct network_helper_opts srv_opts = {
+ .post_socket_cb = cc_cb,
+ .cb_opts = &dctcp,
+ };
+ struct cb_opts cubic = {
+ .cc = "cubic",
+ };
+ struct network_helper_opts cli_opts = {
+ .post_socket_cb = cc_cb,
+ .cb_opts = &cubic,
+ };
char srv_cc[16];
socklen_t cc_len = sizeof(srv_cc);
@@ -190,13 +293,7 @@ static void test_dctcp_fallback(void)
if (!ASSERT_OK_PTR(link, "dctcp link"))
goto done;
- lfd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
- if (!ASSERT_GE(lfd, 0, "lfd") ||
- !ASSERT_OK(settcpca(lfd, "bpf_dctcp"), "lfd=>bpf_dctcp"))
- goto done;
-
- cli_fd = connect_to_fd_opts(lfd, &opts);
- if (!ASSERT_GE(cli_fd, 0, "cli_fd"))
+ if (!start_test("::1", &srv_opts, &cli_opts, &lfd, &cli_fd))
goto done;
srv_fd = accept(lfd, NULL, 0);
@@ -297,6 +394,13 @@ static void test_unsupp_cong_op(void)
static void test_update_ca(void)
{
+ struct cb_opts cb_opts = {
+ .cc = "tcp_ca_update",
+ };
+ struct network_helper_opts opts = {
+ .post_socket_cb = cc_cb,
+ .cb_opts = &cb_opts,
+ };
struct tcp_ca_update *skel;
struct bpf_link *link;
int saved_ca1_cnt;
@@ -307,25 +411,34 @@ static void test_update_ca(void)
return;
link = bpf_map__attach_struct_ops(skel->maps.ca_update_1);
- ASSERT_OK_PTR(link, "attach_struct_ops");
+ if (!ASSERT_OK_PTR(link, "attach_struct_ops"))
+ goto out;
- do_test("tcp_ca_update", NULL);
+ do_test(&opts);
saved_ca1_cnt = skel->bss->ca1_cnt;
ASSERT_GT(saved_ca1_cnt, 0, "ca1_ca1_cnt");
err = bpf_link__update_map(link, skel->maps.ca_update_2);
ASSERT_OK(err, "update_map");
- do_test("tcp_ca_update", NULL);
+ do_test(&opts);
ASSERT_EQ(skel->bss->ca1_cnt, saved_ca1_cnt, "ca2_ca1_cnt");
ASSERT_GT(skel->bss->ca2_cnt, 0, "ca2_ca2_cnt");
bpf_link__destroy(link);
+out:
tcp_ca_update__destroy(skel);
}
static void test_update_wrong(void)
{
+ struct cb_opts cb_opts = {
+ .cc = "tcp_ca_update",
+ };
+ struct network_helper_opts opts = {
+ .post_socket_cb = cc_cb,
+ .cb_opts = &cb_opts,
+ };
struct tcp_ca_update *skel;
struct bpf_link *link;
int saved_ca1_cnt;
@@ -336,24 +449,33 @@ static void test_update_wrong(void)
return;
link = bpf_map__attach_struct_ops(skel->maps.ca_update_1);
- ASSERT_OK_PTR(link, "attach_struct_ops");
+ if (!ASSERT_OK_PTR(link, "attach_struct_ops"))
+ goto out;
- do_test("tcp_ca_update", NULL);
+ do_test(&opts);
saved_ca1_cnt = skel->bss->ca1_cnt;
ASSERT_GT(saved_ca1_cnt, 0, "ca1_ca1_cnt");
err = bpf_link__update_map(link, skel->maps.ca_wrong);
ASSERT_ERR(err, "update_map");
- do_test("tcp_ca_update", NULL);
+ do_test(&opts);
ASSERT_GT(skel->bss->ca1_cnt, saved_ca1_cnt, "ca2_ca1_cnt");
bpf_link__destroy(link);
+out:
tcp_ca_update__destroy(skel);
}
static void test_mixed_links(void)
{
+ struct cb_opts cb_opts = {
+ .cc = "tcp_ca_update",
+ };
+ struct network_helper_opts opts = {
+ .post_socket_cb = cc_cb,
+ .cb_opts = &cb_opts,
+ };
struct tcp_ca_update *skel;
struct bpf_link *link, *link_nl;
int err;
@@ -363,12 +485,13 @@ static void test_mixed_links(void)
return;
link_nl = bpf_map__attach_struct_ops(skel->maps.ca_no_link);
- ASSERT_OK_PTR(link_nl, "attach_struct_ops_nl");
+ if (!ASSERT_OK_PTR(link_nl, "attach_struct_ops_nl"))
+ goto out;
link = bpf_map__attach_struct_ops(skel->maps.ca_update_1);
ASSERT_OK_PTR(link, "attach_struct_ops");
- do_test("tcp_ca_update", NULL);
+ do_test(&opts);
ASSERT_GT(skel->bss->ca1_cnt, 0, "ca1_ca1_cnt");
err = bpf_link__update_map(link, skel->maps.ca_no_link);
@@ -376,6 +499,7 @@ static void test_mixed_links(void)
bpf_link__destroy(link);
bpf_link__destroy(link_nl);
+out:
tcp_ca_update__destroy(skel);
}
@@ -418,7 +542,8 @@ static void test_link_replace(void)
bpf_link__destroy(link);
link = bpf_map__attach_struct_ops(skel->maps.ca_update_2);
- ASSERT_OK_PTR(link, "attach_struct_ops_2nd");
+ if (!ASSERT_OK_PTR(link, "attach_struct_ops_2nd"))
+ goto out;
/* BPF_F_REPLACE with a wrong old map Fd. It should fail!
*
@@ -441,6 +566,7 @@ static void test_link_replace(void)
bpf_link__destroy(link);
+out:
tcp_ca_update__destroy(skel);
}
@@ -455,6 +581,13 @@ static void test_tcp_ca_kfunc(void)
static void test_cc_cubic(void)
{
+ struct cb_opts cb_opts = {
+ .cc = "bpf_cc_cubic",
+ };
+ struct network_helper_opts opts = {
+ .post_socket_cb = cc_cb,
+ .cb_opts = &cb_opts,
+ };
struct bpf_cc_cubic *cc_cubic_skel;
struct bpf_link *link;
@@ -468,7 +601,7 @@ static void test_cc_cubic(void)
return;
}
- do_test("bpf_cc_cubic", NULL);
+ do_test(&opts);
bpf_link__destroy(link);
bpf_cc_cubic__destroy(cc_cubic_skel);
@@ -506,4 +639,6 @@ void test_bpf_tcp_ca(void)
test_tcp_ca_kfunc();
if (test__start_subtest("cc_cubic"))
test_cc_cubic();
+ if (test__start_subtest("dctcp_autoattach_map"))
+ test_dctcp_autoattach_map();
}