treewide: refactor help messages

[mirror_iproute2.git] / tc / f_bpf.c

diff --git a/tc/f_bpf.c b/tc/f_bpf.c
index 948d9051b9a5862e97693059527610981bd8d77f..135271aa16978c34d41e19b6e8ea3b261f9b07d2 100644 (file)
--- a/tc/f_bpf.c
+++ b/tc/f_bpf.c
@@ -23,36 +23,38 @@ static const enum bpf_prog_type bpf_type = BPF_PROG_TYPE_SCHED_CLS;
 
 static void explain(void)
 {
-       fprintf(stderr, "Usage: ... bpf ...\n");
-       fprintf(stderr, "\n");
-       fprintf(stderr, "BPF use case:\n");
-       fprintf(stderr, " bytecode BPF_BYTECODE\n");
-       fprintf(stderr, " bytecode-file FILE\n");
-       fprintf(stderr, "\n");
-       fprintf(stderr, "eBPF use case:\n");
-       fprintf(stderr, " object-file FILE [ section CLS_NAME ] [ export UDS_FILE ]");
-       fprintf(stderr, " [ verbose ] [ direct-action ] [ skip_hw | skip_sw ]\n");
-       fprintf(stderr, " object-pinned FILE [ direct-action ] [ skip_hw | skip_sw ]\n");
-       fprintf(stderr, "\n");
-       fprintf(stderr, "Common remaining options:\n");
-       fprintf(stderr, " [ action ACTION_SPEC ]\n");
-       fprintf(stderr, " [ classid CLASSID ]\n");
-       fprintf(stderr, "\n");
-       fprintf(stderr, "Where BPF_BYTECODE := \'s,c t f k,c t f k,c t f k,...\'\n");
-       fprintf(stderr, "c,t,f,k and s are decimals; s denotes number of 4-tuples\n");
-       fprintf(stderr, "\n");
-       fprintf(stderr, "Where FILE points to a file containing the BPF_BYTECODE string,\n");
-       fprintf(stderr, "an ELF file containing eBPF map definitions and bytecode, or a\n");
-       fprintf(stderr, "pinned eBPF program.\n");
-       fprintf(stderr, "\n");
-       fprintf(stderr, "Where CLS_NAME refers to the section name containing the\n");
-       fprintf(stderr, "classifier (default \'%s\').\n", bpf_prog_to_default_section(bpf_type));
-       fprintf(stderr, "\n");
-       fprintf(stderr, "Where UDS_FILE points to a unix domain socket file in order\n");
-       fprintf(stderr, "to hand off control of all created eBPF maps to an agent.\n");
-       fprintf(stderr, "\n");
-       fprintf(stderr, "ACTION_SPEC := ... look at individual actions\n");
-       fprintf(stderr, "NOTE: CLASSID is parsed as hexadecimal input.\n");
+       fprintf(stderr,
+               "Usage: ... bpf ...\n"
+               "\n"
+               "BPF use case:\n"
+               " bytecode BPF_BYTECODE\n"
+               " bytecode-file FILE\n"
+               "\n"
+               "eBPF use case:\n"
+               " object-file FILE [ section CLS_NAME ] [ export UDS_FILE ]"
+               " [ verbose ] [ direct-action ] [ skip_hw | skip_sw ]\n"
+               " object-pinned FILE [ direct-action ] [ skip_hw | skip_sw ]\n"
+               "\n"
+               "Common remaining options:\n"
+               " [ action ACTION_SPEC ]\n"
+               " [ classid CLASSID ]\n"
+               "\n"
+               "Where BPF_BYTECODE := \'s,c t f k,c t f k,c t f k,...\'\n"
+               "c,t,f,k and s are decimals; s denotes number of 4-tuples\n"
+               "\n"
+               "Where FILE points to a file containing the BPF_BYTECODE string,\n"
+               "an ELF file containing eBPF map definitions and bytecode, or a\n"
+               "pinned eBPF program.\n"
+               "\n"
+               "Where CLS_NAME refers to the section name containing the\n"
+               "classifier (default \'%s\').\n"
+               "\n"
+               "Where UDS_FILE points to a unix domain socket file in order\n"
+               "to hand off control of all created eBPF maps to an agent.\n"
+               "\n"
+               "ACTION_SPEC := ... look at individual actions\n"
+               "NOTE: CLASSID is parsed as hexadecimal input.\n",
+               bpf_prog_to_default_section(bpf_type));
 }
 
 static void bpf_cbpf_cb(void *nl, const struct sock_filter *ops, int ops_len)