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document the locking behaviour of the functions that access

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the routing table.
This commit is contained in:
Luigi Rizzo 2004-04-24 23:34:04 +00:00
parent e265f05414
commit 3916ebe8f0
1 changed files with 15 additions and 3 deletions
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18
sys/net/route.h
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@ -324,10 +324,22 @@ void rt_ifmsg(struct ifnet *);
void rt_missmsg(int, struct rt_addrinfo *, int, int);
void rt_newaddrmsg(int, struct ifaddr *, int, struct rtentry *);
void rt_newmaddrmsg(int, struct ifmultiaddr *);
void rtalloc(struct route *);
int rt_setgate(struct rtentry *, struct sockaddr *, struct sockaddr *);
void rtalloc_ign(struct route *, u_long);
/* NB: the rtentry is returned locked */
/*
* Note the following locking behavior:
*
* rtalloc_ign() and rtalloc() return ro->ro_rt unlocked
*
* rtalloc1() returns a locked rtentry
*
* rtfree() and RTFREE_LOCKED() require a locked rtentry
*
* RTFREE() uses an unlocked entry.
*/
void rtalloc_ign(struct route *ro, u_long ignflags);
void rtalloc(struct route *ro); /* XXX deprecated, use rtalloc_ign(ro, 0) */
struct rtentry *rtalloc1(struct sockaddr *, int, u_long);
int rtexpunge(struct rtentry *);
void rtfree(struct rtentry *);