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Diffstat (limited to 'tools/lib/bpf/libbpf.c')
-rw-r--r--tools/lib/bpf/libbpf.c71
1 files changed, 65 insertions, 6 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 3a6108e3238b..e067be95da3c 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -82,17 +82,22 @@ static const char * const attach_type_name[] = {
[BPF_CGROUP_INET6_BIND] = "cgroup_inet6_bind",
[BPF_CGROUP_INET4_CONNECT] = "cgroup_inet4_connect",
[BPF_CGROUP_INET6_CONNECT] = "cgroup_inet6_connect",
+ [BPF_CGROUP_UNIX_CONNECT] = "cgroup_unix_connect",
[BPF_CGROUP_INET4_POST_BIND] = "cgroup_inet4_post_bind",
[BPF_CGROUP_INET6_POST_BIND] = "cgroup_inet6_post_bind",
[BPF_CGROUP_INET4_GETPEERNAME] = "cgroup_inet4_getpeername",
[BPF_CGROUP_INET6_GETPEERNAME] = "cgroup_inet6_getpeername",
+ [BPF_CGROUP_UNIX_GETPEERNAME] = "cgroup_unix_getpeername",
[BPF_CGROUP_INET4_GETSOCKNAME] = "cgroup_inet4_getsockname",
[BPF_CGROUP_INET6_GETSOCKNAME] = "cgroup_inet6_getsockname",
+ [BPF_CGROUP_UNIX_GETSOCKNAME] = "cgroup_unix_getsockname",
[BPF_CGROUP_UDP4_SENDMSG] = "cgroup_udp4_sendmsg",
[BPF_CGROUP_UDP6_SENDMSG] = "cgroup_udp6_sendmsg",
+ [BPF_CGROUP_UNIX_SENDMSG] = "cgroup_unix_sendmsg",
[BPF_CGROUP_SYSCTL] = "cgroup_sysctl",
[BPF_CGROUP_UDP4_RECVMSG] = "cgroup_udp4_recvmsg",
[BPF_CGROUP_UDP6_RECVMSG] = "cgroup_udp6_recvmsg",
+ [BPF_CGROUP_UNIX_RECVMSG] = "cgroup_unix_recvmsg",
[BPF_CGROUP_GETSOCKOPT] = "cgroup_getsockopt",
[BPF_CGROUP_SETSOCKOPT] = "cgroup_setsockopt",
[BPF_SK_SKB_STREAM_PARSER] = "sk_skb_stream_parser",
@@ -121,6 +126,8 @@ static const char * const attach_type_name[] = {
[BPF_TCX_INGRESS] = "tcx_ingress",
[BPF_TCX_EGRESS] = "tcx_egress",
[BPF_TRACE_UPROBE_MULTI] = "trace_uprobe_multi",
+ [BPF_NETKIT_PRIMARY] = "netkit_primary",
+ [BPF_NETKIT_PEER] = "netkit_peer",
};
static const char * const link_type_name[] = {
@@ -137,6 +144,7 @@ static const char * const link_type_name[] = {
[BPF_LINK_TYPE_NETFILTER] = "netfilter",
[BPF_LINK_TYPE_TCX] = "tcx",
[BPF_LINK_TYPE_UPROBE_MULTI] = "uprobe_multi",
+ [BPF_LINK_TYPE_NETKIT] = "netkit",
};
static const char * const map_type_name[] = {
@@ -8910,6 +8918,8 @@ static const struct bpf_sec_def section_defs[] = {
SEC_DEF("tc", SCHED_CLS, 0, SEC_NONE), /* deprecated / legacy, use tcx */
SEC_DEF("classifier", SCHED_CLS, 0, SEC_NONE), /* deprecated / legacy, use tcx */
SEC_DEF("action", SCHED_ACT, 0, SEC_NONE), /* deprecated / legacy, use tcx */
+ SEC_DEF("netkit/primary", SCHED_CLS, BPF_NETKIT_PRIMARY, SEC_NONE),
+ SEC_DEF("netkit/peer", SCHED_CLS, BPF_NETKIT_PEER, SEC_NONE),
SEC_DEF("tracepoint+", TRACEPOINT, 0, SEC_NONE, attach_tp),
SEC_DEF("tp+", TRACEPOINT, 0, SEC_NONE, attach_tp),
SEC_DEF("raw_tracepoint+", RAW_TRACEPOINT, 0, SEC_NONE, attach_raw_tp),
@@ -8960,14 +8970,19 @@ static const struct bpf_sec_def section_defs[] = {
SEC_DEF("cgroup/bind6", CGROUP_SOCK_ADDR, BPF_CGROUP_INET6_BIND, SEC_ATTACHABLE),
SEC_DEF("cgroup/connect4", CGROUP_SOCK_ADDR, BPF_CGROUP_INET4_CONNECT, SEC_ATTACHABLE),
SEC_DEF("cgroup/connect6", CGROUP_SOCK_ADDR, BPF_CGROUP_INET6_CONNECT, SEC_ATTACHABLE),
+ SEC_DEF("cgroup/connect_unix", CGROUP_SOCK_ADDR, BPF_CGROUP_UNIX_CONNECT, SEC_ATTACHABLE),
SEC_DEF("cgroup/sendmsg4", CGROUP_SOCK_ADDR, BPF_CGROUP_UDP4_SENDMSG, SEC_ATTACHABLE),
SEC_DEF("cgroup/sendmsg6", CGROUP_SOCK_ADDR, BPF_CGROUP_UDP6_SENDMSG, SEC_ATTACHABLE),
+ SEC_DEF("cgroup/sendmsg_unix", CGROUP_SOCK_ADDR, BPF_CGROUP_UNIX_SENDMSG, SEC_ATTACHABLE),
SEC_DEF("cgroup/recvmsg4", CGROUP_SOCK_ADDR, BPF_CGROUP_UDP4_RECVMSG, SEC_ATTACHABLE),
SEC_DEF("cgroup/recvmsg6", CGROUP_SOCK_ADDR, BPF_CGROUP_UDP6_RECVMSG, SEC_ATTACHABLE),
+ SEC_DEF("cgroup/recvmsg_unix", CGROUP_SOCK_ADDR, BPF_CGROUP_UNIX_RECVMSG, SEC_ATTACHABLE),
SEC_DEF("cgroup/getpeername4", CGROUP_SOCK_ADDR, BPF_CGROUP_INET4_GETPEERNAME, SEC_ATTACHABLE),
SEC_DEF("cgroup/getpeername6", CGROUP_SOCK_ADDR, BPF_CGROUP_INET6_GETPEERNAME, SEC_ATTACHABLE),
+ SEC_DEF("cgroup/getpeername_unix", CGROUP_SOCK_ADDR, BPF_CGROUP_UNIX_GETPEERNAME, SEC_ATTACHABLE),
SEC_DEF("cgroup/getsockname4", CGROUP_SOCK_ADDR, BPF_CGROUP_INET4_GETSOCKNAME, SEC_ATTACHABLE),
SEC_DEF("cgroup/getsockname6", CGROUP_SOCK_ADDR, BPF_CGROUP_INET6_GETSOCKNAME, SEC_ATTACHABLE),
+ SEC_DEF("cgroup/getsockname_unix", CGROUP_SOCK_ADDR, BPF_CGROUP_UNIX_GETSOCKNAME, SEC_ATTACHABLE),
SEC_DEF("cgroup/sysctl", CGROUP_SYSCTL, BPF_CGROUP_SYSCTL, SEC_ATTACHABLE),
SEC_DEF("cgroup/getsockopt", CGROUP_SOCKOPT, BPF_CGROUP_GETSOCKOPT, SEC_ATTACHABLE),
SEC_DEF("cgroup/setsockopt", CGROUP_SOCKOPT, BPF_CGROUP_SETSOCKOPT, SEC_ATTACHABLE),
@@ -11114,7 +11129,7 @@ static int attach_uprobe_multi(const struct bpf_program *prog, long cookie, stru
*link = NULL;
- n = sscanf(prog->sec_name, "%m[^/]/%m[^:]:%ms",
+ n = sscanf(prog->sec_name, "%m[^/]/%m[^:]:%m[^\n]",
&probe_type, &binary_path, &func_name);
switch (n) {
case 1:
@@ -11624,14 +11639,14 @@ err_out:
static int attach_uprobe(const struct bpf_program *prog, long cookie, struct bpf_link **link)
{
DECLARE_LIBBPF_OPTS(bpf_uprobe_opts, opts);
- char *probe_type = NULL, *binary_path = NULL, *func_name = NULL;
- int n, ret = -EINVAL;
+ char *probe_type = NULL, *binary_path = NULL, *func_name = NULL, *func_off;
+ int n, c, ret = -EINVAL;
long offset = 0;
*link = NULL;
- n = sscanf(prog->sec_name, "%m[^/]/%m[^:]:%m[a-zA-Z0-9_.]+%li",
- &probe_type, &binary_path, &func_name, &offset);
+ n = sscanf(prog->sec_name, "%m[^/]/%m[^:]:%m[^\n]",
+ &probe_type, &binary_path, &func_name);
switch (n) {
case 1:
/* handle SEC("u[ret]probe") - format is valid, but auto-attach is impossible. */
@@ -11642,7 +11657,17 @@ static int attach_uprobe(const struct bpf_program *prog, long cookie, struct bpf
prog->name, prog->sec_name);
break;
case 3:
- case 4:
+ /* check if user specifies `+offset`, if yes, this should be
+ * the last part of the string, make sure sscanf read to EOL
+ */
+ func_off = strrchr(func_name, '+');
+ if (func_off) {
+ n = sscanf(func_off, "+%li%n", &offset, &c);
+ if (n == 1 && *(func_off + c) == '\0')
+ func_off[0] = '\0';
+ else
+ offset = 0;
+ }
opts.retprobe = strcmp(probe_type, "uretprobe") == 0 ||
strcmp(probe_type, "uretprobe.s") == 0;
if (opts.retprobe && offset != 0) {
@@ -12106,6 +12131,40 @@ bpf_program__attach_tcx(const struct bpf_program *prog, int ifindex,
return bpf_program_attach_fd(prog, ifindex, "tcx", &link_create_opts);
}
+struct bpf_link *
+bpf_program__attach_netkit(const struct bpf_program *prog, int ifindex,
+ const struct bpf_netkit_opts *opts)
+{
+ LIBBPF_OPTS(bpf_link_create_opts, link_create_opts);
+ __u32 relative_id;
+ int relative_fd;
+
+ if (!OPTS_VALID(opts, bpf_netkit_opts))
+ return libbpf_err_ptr(-EINVAL);
+
+ relative_id = OPTS_GET(opts, relative_id, 0);
+ relative_fd = OPTS_GET(opts, relative_fd, 0);
+
+ /* validate we don't have unexpected combinations of non-zero fields */
+ if (!ifindex) {
+ pr_warn("prog '%s': target netdevice ifindex cannot be zero\n",
+ prog->name);
+ return libbpf_err_ptr(-EINVAL);
+ }
+ if (relative_fd && relative_id) {
+ pr_warn("prog '%s': relative_fd and relative_id cannot be set at the same time\n",
+ prog->name);
+ return libbpf_err_ptr(-EINVAL);
+ }
+
+ link_create_opts.netkit.expected_revision = OPTS_GET(opts, expected_revision, 0);
+ link_create_opts.netkit.relative_fd = relative_fd;
+ link_create_opts.netkit.relative_id = relative_id;
+ link_create_opts.flags = OPTS_GET(opts, flags, 0);
+
+ return bpf_program_attach_fd(prog, ifindex, "netkit", &link_create_opts);
+}
+
struct bpf_link *bpf_program__attach_freplace(const struct bpf_program *prog,
int target_fd,
const char *attach_func_name)
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-06 06:02:04 +0000