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-rw-r--r--samples/Kconfig1
-rw-r--r--samples/bpf/Makefile1
-rw-r--r--samples/bpf/bpf_load.c1
-rw-r--r--samples/bpf/sampleip_user.c1
-rw-r--r--samples/bpf/sockex2_kern.c11
-rw-r--r--samples/bpf/sockex3_kern.c8
-rw-r--r--samples/bpf/sockex3_user.c4
-rw-r--r--samples/bpf/tcp_tos_reflect_kern.c87
-rw-r--r--samples/bpf/test_cgrp2_attach2.c19
-rw-r--r--samples/bpf/test_current_task_under_cgroup_user.c1
-rw-r--r--samples/bpf/tracex3_user.c2
-rw-r--r--samples/bpf/xdpsock_kern.c2
-rw-r--r--samples/bpf/xdpsock_user.c15
13 files changed, 132 insertions, 21 deletions
diff --git a/samples/Kconfig b/samples/Kconfig
index bd133efc1a56..ad1ec7016d4c 100644
--- a/samples/Kconfig
+++ b/samples/Kconfig
@@ -1,5 +1,6 @@
menuconfig SAMPLES
bool "Sample kernel code"
+ depends on !UML
help
You can build and test sample kernel code here.
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 36f9f41d094b..be0a961450bc 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -153,6 +153,7 @@ always += tcp_cong_kern.o
always += tcp_iw_kern.o
always += tcp_clamp_kern.o
always += tcp_basertt_kern.o
+always += tcp_tos_reflect_kern.o
always += xdp_redirect_kern.o
always += xdp_redirect_map_kern.o
always += xdp_redirect_cpu_kern.o
diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index 904e775d1a44..e6d7e0fe155b 100644
--- a/samples/bpf/bpf_load.c
+++ b/samples/bpf/bpf_load.c
@@ -16,7 +16,6 @@
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/types.h>
-#include <sys/types.h>
#include <sys/socket.h>
#include <sys/syscall.h>
#include <sys/ioctl.h>
diff --git a/samples/bpf/sampleip_user.c b/samples/bpf/sampleip_user.c
index 60c2b73d1b4d..216c7ecbbbe9 100644
--- a/samples/bpf/sampleip_user.c
+++ b/samples/bpf/sampleip_user.c
@@ -9,7 +9,6 @@
*/
#include <stdio.h>
#include <stdlib.h>
-#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>
diff --git a/samples/bpf/sockex2_kern.c b/samples/bpf/sockex2_kern.c
index f58acfc92556..f2f9dbc021b0 100644
--- a/samples/bpf/sockex2_kern.c
+++ b/samples/bpf/sockex2_kern.c
@@ -14,7 +14,7 @@ struct vlan_hdr {
__be16 h_vlan_encapsulated_proto;
};
-struct bpf_flow_keys {
+struct flow_key_record {
__be32 src;
__be32 dst;
union {
@@ -59,7 +59,7 @@ static inline __u32 ipv6_addr_hash(struct __sk_buff *ctx, __u64 off)
}
static inline __u64 parse_ip(struct __sk_buff *skb, __u64 nhoff, __u64 *ip_proto,
- struct bpf_flow_keys *flow)
+ struct flow_key_record *flow)
{
__u64 verlen;
@@ -83,7 +83,7 @@ static inline __u64 parse_ip(struct __sk_buff *skb, __u64 nhoff, __u64 *ip_proto
}
static inline __u64 parse_ipv6(struct __sk_buff *skb, __u64 nhoff, __u64 *ip_proto,
- struct bpf_flow_keys *flow)
+ struct flow_key_record *flow)
{
*ip_proto = load_byte(skb,
nhoff + offsetof(struct ipv6hdr, nexthdr));
@@ -96,7 +96,8 @@ static inline __u64 parse_ipv6(struct __sk_buff *skb, __u64 nhoff, __u64 *ip_pro
return nhoff;
}
-static inline bool flow_dissector(struct __sk_buff *skb, struct bpf_flow_keys *flow)
+static inline bool flow_dissector(struct __sk_buff *skb,
+ struct flow_key_record *flow)
{
__u64 nhoff = ETH_HLEN;
__u64 ip_proto;
@@ -198,7 +199,7 @@ struct bpf_map_def SEC("maps") hash_map = {
SEC("socket2")
int bpf_prog2(struct __sk_buff *skb)
{
- struct bpf_flow_keys flow = {};
+ struct flow_key_record flow = {};
struct pair *value;
u32 key;
diff --git a/samples/bpf/sockex3_kern.c b/samples/bpf/sockex3_kern.c
index 95907f8d2b17..c527b57d3ec8 100644
--- a/samples/bpf/sockex3_kern.c
+++ b/samples/bpf/sockex3_kern.c
@@ -61,7 +61,7 @@ struct vlan_hdr {
__be16 h_vlan_encapsulated_proto;
};
-struct bpf_flow_keys {
+struct flow_key_record {
__be32 src;
__be32 dst;
union {
@@ -88,7 +88,7 @@ static inline __u32 ipv6_addr_hash(struct __sk_buff *ctx, __u64 off)
}
struct globals {
- struct bpf_flow_keys flow;
+ struct flow_key_record flow;
};
struct bpf_map_def SEC("maps") percpu_map = {
@@ -114,14 +114,14 @@ struct pair {
struct bpf_map_def SEC("maps") hash_map = {
.type = BPF_MAP_TYPE_HASH,
- .key_size = sizeof(struct bpf_flow_keys),
+ .key_size = sizeof(struct flow_key_record),
.value_size = sizeof(struct pair),
.max_entries = 1024,
};
static void update_stats(struct __sk_buff *skb, struct globals *g)
{
- struct bpf_flow_keys key = g->flow;
+ struct flow_key_record key = g->flow;
struct pair *value;
value = bpf_map_lookup_elem(&hash_map, &key);
diff --git a/samples/bpf/sockex3_user.c b/samples/bpf/sockex3_user.c
index 5ba3ae9d180b..9d02e0404719 100644
--- a/samples/bpf/sockex3_user.c
+++ b/samples/bpf/sockex3_user.c
@@ -13,7 +13,7 @@
#define PARSE_IP_PROG_FD (prog_fd[0])
#define PROG_ARRAY_FD (map_fd[0])
-struct bpf_flow_keys {
+struct flow_key_record {
__be32 src;
__be32 dst;
union {
@@ -64,7 +64,7 @@ int main(int argc, char **argv)
(void) f;
for (i = 0; i < 5; i++) {
- struct bpf_flow_keys key = {}, next_key;
+ struct flow_key_record key = {}, next_key;
struct pair value;
sleep(1);
diff --git a/samples/bpf/tcp_tos_reflect_kern.c b/samples/bpf/tcp_tos_reflect_kern.c
new file mode 100644
index 000000000000..d51dab19eca6
--- /dev/null
+++ b/samples/bpf/tcp_tos_reflect_kern.c
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 Facebook
+ *
+ * BPF program to automatically reflect TOS option from received syn packet
+ *
+ * Use load_sock_ops to load this BPF program.
+ */
+
+#include <uapi/linux/bpf.h>
+#include <uapi/linux/tcp.h>
+#include <uapi/linux/if_ether.h>
+#include <uapi/linux/if_packet.h>
+#include <uapi/linux/ip.h>
+#include <uapi/linux/ipv6.h>
+#include <uapi/linux/in.h>
+#include <linux/socket.h>
+#include "bpf_helpers.h"
+#include "bpf_endian.h"
+
+#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)
+{
+ char header[sizeof(struct ipv6hdr)];
+ struct ipv6hdr *hdr6;
+ struct iphdr *hdr;
+ int hdr_size = 0;
+ int save_syn = 1;
+ int tos = 0;
+ int rv = 0;
+ int op;
+
+ op = (int) skops->op;
+
+#ifdef DEBUG
+ bpf_printk("BPF command: %d\n", op);
+#endif
+ switch (op) {
+ case BPF_SOCK_OPS_TCP_LISTEN_CB:
+ rv = bpf_setsockopt(skops, SOL_TCP, TCP_SAVE_SYN,
+ &save_syn, sizeof(save_syn));
+ break;
+ case BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB:
+ if (skops->family == AF_INET)
+ hdr_size = sizeof(struct iphdr);
+ else
+ hdr_size = sizeof(struct ipv6hdr);
+ rv = bpf_getsockopt(skops, SOL_TCP, TCP_SAVED_SYN,
+ header, hdr_size);
+ if (!rv) {
+ if (skops->family == AF_INET) {
+ hdr = (struct iphdr *) header;
+ tos = hdr->tos;
+ if (tos != 0)
+ bpf_setsockopt(skops, SOL_IP, IP_TOS,
+ &tos, sizeof(tos));
+ } else {
+ hdr6 = (struct ipv6hdr *) header;
+ tos = ((hdr6->priority) << 4 |
+ (hdr6->flow_lbl[0]) >> 4);
+ if (tos)
+ bpf_setsockopt(skops, SOL_IPV6,
+ IPV6_TCLASS,
+ &tos, sizeof(tos));
+ }
+ rv = 0;
+ }
+ break;
+ default:
+ rv = -1;
+ }
+#ifdef DEBUG
+ bpf_printk("Returning %d\n", rv);
+#endif
+ skops->reply = rv;
+ return 1;
+}
+char _license[] SEC("license") = "GPL";
diff --git a/samples/bpf/test_cgrp2_attach2.c b/samples/bpf/test_cgrp2_attach2.c
index 180f9d813bca..d7b68ef5ba79 100644
--- a/samples/bpf/test_cgrp2_attach2.c
+++ b/samples/bpf/test_cgrp2_attach2.c
@@ -209,7 +209,7 @@ static int map_fd = -1;
static int prog_load_cnt(int verdict, int val)
{
- int cgroup_storage_fd;
+ int cgroup_storage_fd, percpu_cgroup_storage_fd;
if (map_fd < 0)
map_fd = bpf_create_map(BPF_MAP_TYPE_ARRAY, 4, 8, 1, 0);
@@ -225,6 +225,14 @@ static int prog_load_cnt(int verdict, int val)
return -1;
}
+ percpu_cgroup_storage_fd = bpf_create_map(
+ BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE,
+ sizeof(struct bpf_cgroup_storage_key), 8, 0, 0);
+ if (percpu_cgroup_storage_fd < 0) {
+ printf("failed to create map '%s'\n", strerror(errno));
+ return -1;
+ }
+
struct bpf_insn prog[] = {
BPF_MOV32_IMM(BPF_REG_0, 0),
BPF_STX_MEM(BPF_W, BPF_REG_10, BPF_REG_0, -4), /* *(u32 *)(fp - 4) = r0 */
@@ -235,11 +243,20 @@ static int prog_load_cnt(int verdict, int val)
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
BPF_MOV64_IMM(BPF_REG_1, val), /* r1 = 1 */
BPF_RAW_INSN(BPF_STX | BPF_XADD | BPF_DW, BPF_REG_0, BPF_REG_1, 0, 0), /* xadd r0 += r1 */
+
BPF_LD_MAP_FD(BPF_REG_1, cgroup_storage_fd),
BPF_MOV64_IMM(BPF_REG_2, 0),
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_local_storage),
BPF_MOV64_IMM(BPF_REG_1, val),
BPF_RAW_INSN(BPF_STX | BPF_XADD | BPF_W, BPF_REG_0, BPF_REG_1, 0, 0),
+
+ BPF_LD_MAP_FD(BPF_REG_1, percpu_cgroup_storage_fd),
+ BPF_MOV64_IMM(BPF_REG_2, 0),
+ BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_local_storage),
+ BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_0, 0),
+ BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, 0x1),
+ BPF_STX_MEM(BPF_W, BPF_REG_0, BPF_REG_3, 0),
+
BPF_MOV64_IMM(BPF_REG_0, verdict), /* r0 = verdict */
BPF_EXIT_INSN(),
};
diff --git a/samples/bpf/test_current_task_under_cgroup_user.c b/samples/bpf/test_current_task_under_cgroup_user.c
index 4be4874ca2bc..2259f997a26c 100644
--- a/samples/bpf/test_current_task_under_cgroup_user.c
+++ b/samples/bpf/test_current_task_under_cgroup_user.c
@@ -11,7 +11,6 @@
#include <unistd.h>
#include <bpf/bpf.h>
#include "bpf_load.h"
-#include <linux/bpf.h>
#include "cgroup_helpers.h"
#define CGROUP_PATH "/my-cgroup"
diff --git a/samples/bpf/tracex3_user.c b/samples/bpf/tracex3_user.c
index 6c6b10f4c3ee..56466d010139 100644
--- a/samples/bpf/tracex3_user.c
+++ b/samples/bpf/tracex3_user.c
@@ -17,8 +17,6 @@
#include "bpf_load.h"
#include "bpf_util.h"
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
-
#define SLOTS 100
static void clear_stats(int fd)
diff --git a/samples/bpf/xdpsock_kern.c b/samples/bpf/xdpsock_kern.c
index d8806c41362e..b8ccd0802b3f 100644
--- a/samples/bpf/xdpsock_kern.c
+++ b/samples/bpf/xdpsock_kern.c
@@ -16,7 +16,7 @@ struct bpf_map_def SEC("maps") xsks_map = {
.type = BPF_MAP_TYPE_XSKMAP,
.key_size = sizeof(int),
.value_size = sizeof(int),
- .max_entries = 4,
+ .max_entries = MAX_SOCKS,
};
struct bpf_map_def SEC("maps") rr_map = {
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index 4914788b6727..57ecadc58403 100644
--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c
@@ -118,7 +118,6 @@ struct xdpsock {
unsigned long prev_tx_npkts;
};
-#define MAX_SOCKS 4
static int num_socks;
struct xdpsock *xsks[MAX_SOCKS];
@@ -596,7 +595,7 @@ static void dump_stats(void)
prev_time = now;
- for (i = 0; i < num_socks; i++) {
+ for (i = 0; i < num_socks && xsks[i]; i++) {
char *fmt = "%-15s %'-11.0f %'-11lu\n";
double rx_pps, tx_pps;
@@ -649,6 +648,8 @@ static struct option long_options[] = {
{"xdp-skb", no_argument, 0, 'S'},
{"xdp-native", no_argument, 0, 'N'},
{"interval", required_argument, 0, 'n'},
+ {"zero-copy", no_argument, 0, 'z'},
+ {"copy", no_argument, 0, 'c'},
{0, 0, 0, 0}
};
@@ -667,6 +668,8 @@ static void usage(const char *prog)
" -S, --xdp-skb=n Use XDP skb-mod\n"
" -N, --xdp-native=n Enfore XDP native mode\n"
" -n, --interval=n Specify statistics update interval (default 1 sec).\n"
+ " -z, --zero-copy Force zero-copy mode.\n"
+ " -c, --copy Force copy mode.\n"
"\n";
fprintf(stderr, str, prog);
exit(EXIT_FAILURE);
@@ -679,7 +682,7 @@ static void parse_command_line(int argc, char **argv)
opterr = 0;
for (;;) {
- c = getopt_long(argc, argv, "rtli:q:psSNn:", long_options,
+ c = getopt_long(argc, argv, "rtli:q:psSNn:cz", long_options,
&option_index);
if (c == -1)
break;
@@ -716,6 +719,12 @@ static void parse_command_line(int argc, char **argv)
case 'n':
opt_interval = atoi(optarg);
break;
+ case 'z':
+ opt_xdp_bind_flags |= XDP_ZEROCOPY;
+ break;
+ case 'c':
+ opt_xdp_bind_flags |= XDP_COPY;
+ break;
default:
usage(basename(argv[0]));
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 22:00:33 +0000