samples/bpf: Move open_raw_sock to separate header

This function was declared in libbpf.c and was the only remaining
function in this library, but has nothing to do with BPF. Shift it out
into a new header, sock_example.h, and include it from the relevant
samples.

Signed-off-by: Joe Stringer <joe@ovn.org>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20161209024620.31660-8-joe@ovn.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 5a73f5a..f01b66f 100644 (file)
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -36,7 +36,7 @@ hostprogs-y += lwt_len_hist
 hostprogs-y += xdp_tx_iptunnel
 
 # Libbpf dependencies
-LIBBPF := libbpf.o ../../tools/lib/bpf/bpf.o
+LIBBPF := ../../tools/lib/bpf/bpf.o
 
 test_lru_dist-objs := test_lru_dist.o $(LIBBPF)
 sock_example-objs := sock_example.o $(LIBBPF)

diff --git a/samples/bpf/fds_example.c b/samples/bpf/fds_example.c
index a5cddc9..e29bd52 100644 (file)
--- a/samples/bpf/fds_example.c
+++ b/samples/bpf/fds_example.c
@@ -14,6 +14,7 @@
 
 #include "bpf_load.h"
 #include "libbpf.h"
+#include "sock_example.h"
 
 #define BPF_F_PIN      (1 << 0)
 #define BPF_F_GET      (1 << 1)

diff --git a/samples/bpf/libbpf.h b/samples/bpf/libbpf.h
index 09aedc3..3705fba 100644 (file)
--- a/samples/bpf/libbpf.h
+++ b/samples/bpf/libbpf.h
@@ -185,7 +185,4 @@ struct bpf_insn;
                .off   = 0,                                     \
                .imm   = 0 })
 
-/* create RAW socket and bind to interface 'name' */
-int open_raw_sock(const char *name);
-
 #endif

diff --git a/samples/bpf/sock_example.c b/samples/bpf/sock_example.c
index 5546f8a..6fc6e19 100644 (file)
--- a/samples/bpf/sock_example.c
+++ b/samples/bpf/sock_example.c
@@ -27,6 +27,7 @@
 #include <linux/ip.h>
 #include <stddef.h>
 #include "libbpf.h"
+#include "sock_example.h"
 
 char bpf_log_buf[BPF_LOG_BUF_SIZE];
 

diff --git a/samples/bpf/libbpf.c b/samples/bpf/sock_example.h
similarity index 92%
rename from samples/bpf/libbpf.c
rename to samples/bpf/sock_example.h
index bee473a..09f7fe7 100644 (file)
--- a/samples/bpf/libbpf.c
+++ b/samples/bpf/sock_example.h
@@ -1,4 +1,3 @@
-/* eBPF mini library */
 #include <stdlib.h>
 #include <stdio.h>
 #include <linux/unistd.h>
@@ -11,7 +10,7 @@
 #include <arpa/inet.h>
 #include "libbpf.h"
 
-int open_raw_sock(const char *name)
+static inline int open_raw_sock(const char *name)
 {
        struct sockaddr_ll sll;
        int sock;

diff --git a/samples/bpf/sockex1_user.c b/samples/bpf/sockex1_user.c
index 9454448..6cd2feb 100644 (file)
--- a/samples/bpf/sockex1_user.c
+++ b/samples/bpf/sockex1_user.c
@@ -3,6 +3,7 @@
 #include <linux/bpf.h>
 #include "libbpf.h"
 #include "bpf_load.h"
+#include "sock_example.h"
 #include <unistd.h>
 #include <arpa/inet.h>
 

diff --git a/samples/bpf/sockex2_user.c b/samples/bpf/sockex2_user.c
index 6a40600..0e0207c 100644 (file)
--- a/samples/bpf/sockex2_user.c
+++ b/samples/bpf/sockex2_user.c
@@ -3,6 +3,7 @@
 #include <linux/bpf.h>
 #include "libbpf.h"
 #include "bpf_load.h"
+#include "sock_example.h"
 #include <unistd.h>
 #include <arpa/inet.h>
 #include <sys/resource.h>

diff --git a/samples/bpf/sockex3_user.c b/samples/bpf/sockex3_user.c
index 9099c42..b5524d4 100644 (file)
--- a/samples/bpf/sockex3_user.c
+++ b/samples/bpf/sockex3_user.c
@@ -3,6 +3,7 @@
 #include <linux/bpf.h>
 #include "libbpf.h"
 #include "bpf_load.h"
+#include "sock_example.h"
 #include <unistd.h>
 #include <arpa/inet.h>
 #include <sys/resource.h>