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Commit 8f48bcd4 authored by Thomas Graf's avatar Thomas Graf Committed by David S. Miller
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[RTNETLINK]: Add RTA_(PUT|GET) shortcuts for u8, u16, and flag 



Signed-off-by: default avatarThomas Graf <tgraf@suug.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e386c6eb

include/linux/rtnetlink.h

+23 −0
Original line number Diff line number Diff line
@@ -897,6 +897,14 @@ extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const voi 
		goto rtattr_failure; \

	memcpy(skb_put(skb, RTA_ALIGN(attrlen)), data, attrlen); })



#define RTA_PUT_U8(skb, attrtype, value) \

({	u8 _tmp = (value); \

	RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })



#define RTA_PUT_U16(skb, attrtype, value) \

({	u16 _tmp = (value); \

	RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })



#define RTA_PUT_U32(skb, attrtype, value) \

({	u32 _tmp = (value); \

	RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
@@ -914,6 +922,9 @@ extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const voi 
#define RTA_PUT_STRING(skb, attrtype, value) \

	RTA_PUT(skb, attrtype, strlen(value) + 1, value)



#define RTA_PUT_FLAG(skb, attrtype) \

	RTA_PUT(skb, attrtype, 0, NULL);



#define RTA_NEST(skb, type) \

({	struct rtattr *__start = (struct rtattr *) (skb)->tail; \

	RTA_PUT(skb, type, 0, NULL); \
@@ -928,6 +939,16 @@ extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const voi 
		skb_trim(skb, (unsigned char *) (start) - (skb)->data); \

	-1; })



#define RTA_GET_U8(rta) \

({	if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \

		goto rtattr_failure; \

	*(u8 *) RTA_DATA(rta); })



#define RTA_GET_U16(rta) \

({	if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \

		goto rtattr_failure; \

	*(u16 *) RTA_DATA(rta); })



#define RTA_GET_U32(rta) \

({	if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \

		goto rtattr_failure; \
@@ -940,6 +961,8 @@ extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const voi 
	memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \

	_tmp; })



#define RTA_GET_FLAG(rta) (!!(rta))



#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)

#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))