[net v3] selftests: txtimestamp: fix compilation issue

[net v3] selftests: txtimestamp: fix compilation issue

[Vadim Fedorenko]

PACKET_TX_TIMESTAMP is defined in if_packet.h but it is not included in
test. Include it instead of <netpacket/packet.h> otherwise the error of
redefinition arrives.
Also fix the compiler warning about ambiguous control flow by adding
explicit braces.

Fixes: 8fe2f761cae9 ("net-timestamp: expand documentation")
Suggested-by: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
---
 tools/testing/selftests/net/txtimestamp.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/net/txtimestamp.c b/tools/testing/selftests/net/txtimestamp.c
index 490a8cc..3d6bf54 100644
--- a/tools/testing/selftests/net/txtimestamp.c
+++ b/tools/testing/selftests/net/txtimestamp.c
@@ -26,6 +26,7 @@
 #include <inttypes.h>
 #include <linux/errqueue.h>
 #include <linux/if_ether.h>
+#include <linux/if_packet.h>
 #include <linux/ipv6.h>
 #include <linux/net_tstamp.h>
 #include <netdb.h>
@@ -34,7 +35,6 @@
 #include <netinet/ip.h>
 #include <netinet/udp.h>
 #include <netinet/tcp.h>
-#include <netpacket/packet.h>
 #include <poll.h>
 #include <stdarg.h>
 #include <stdbool.h>
@@ -53,6 +53,7 @@
 #define NSEC_PER_USEC	1000L
 #define USEC_PER_SEC	1000000L
 #define NSEC_PER_SEC	1000000000LL
+#define PACKET_TX_TIMESTAMP		16
 
 /* command line parameters */
 static int cfg_proto = SOCK_STREAM;
@@ -495,12 +496,12 @@ static void do_test(int family, unsigned int report_opt)
 	total_len = cfg_payload_len;
 	if (cfg_use_pf_packet || cfg_proto == SOCK_RAW) {
 		total_len += sizeof(struct udphdr);
-		if (cfg_use_pf_packet || cfg_ipproto == IPPROTO_RAW)
+		if (cfg_use_pf_packet || cfg_ipproto == IPPROTO_RAW) {
 			if (family == PF_INET)
 				total_len += sizeof(struct iphdr);
 			else
 				total_len += sizeof(struct ipv6hdr);
-
+		}
 		/* special case, only rawv6_sendmsg:
 		 * pass proto in sin6_port if not connected
 		 * also see ANK comment in net/ipv4/raw.c
-- 
1.8.3.1