ip: IP cmsg cleanup
Move the IP_CMSG_* constants from ip_sockglue.c to inet_sock.h so that
they can be referenced in other source files.
Restructure ip_cmsg_recv to not go through flags using shift, check
for flags by 'and'. This eliminates both the shift and a conditional
per flag check.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index 360b110..605ca42 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -16,7 +16,7 @@
#ifndef _INET_SOCK_H
#define _INET_SOCK_H
-
+#include <linux/bitops.h>
#include <linux/kmemcheck.h>
#include <linux/string.h>
#include <linux/types.h>
@@ -195,6 +195,15 @@
#define IPCORK_OPT 1 /* ip-options has been held in ipcork.opt */
#define IPCORK_ALLFRAG 2 /* always fragment (for ipv6 for now) */
+/* cmsg flags for inet */
+#define IP_CMSG_PKTINFO BIT(0)
+#define IP_CMSG_TTL BIT(1)
+#define IP_CMSG_TOS BIT(2)
+#define IP_CMSG_RECVOPTS BIT(3)
+#define IP_CMSG_RETOPTS BIT(4)
+#define IP_CMSG_PASSSEC BIT(5)
+#define IP_CMSG_ORIGDSTADDR BIT(6)
+
static inline struct inet_sock *inet_sk(const struct sock *sk)
{
return (struct inet_sock *)sk;