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Clean up comments, white space, and style in pfil.c (especially new VNET

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bits).

MFC after:	3 days (not VNET bits)
This commit is contained in:
Robert Watson 2009-10-19 15:19:14 +00:00
parent 07ba0ec4ff
commit cee8119875
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=198233
1 changed files with 28 additions and 30 deletions
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58
sys/net/pfil.c
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@ -86,14 +86,13 @@ pfil_run_hooks(struct pfil_head *ph, struct mbuf **mp, struct ifnet *ifp,
}
}
PFIL_RUNLOCK(ph, &rmpt);
*mp = m;
return (rv);
}
/*
* pfil_head_register() registers a pfil_head with the packet filter
* hook mechanism.
* pfil_head_register() registers a pfil_head with the packet filter hook
* mechanism.
*/
int
pfil_head_register(struct pfil_head *ph)
@ -105,7 +104,7 @@ pfil_head_register(struct pfil_head *ph)
if (ph->ph_type == lph->ph_type &&
ph->ph_un.phu_val == lph->ph_un.phu_val) {
PFIL_LIST_UNLOCK();
return EEXIST;
return (EEXIST);
}
}
PFIL_LOCK_INIT(ph);
@ -151,7 +150,6 @@ pfil_head_get(int type, u_long val)
if (ph->ph_type == type && ph->ph_un.phu_val == val)
break;
PFIL_LIST_UNLOCK();
return (ph);
}
@ -208,7 +206,7 @@ pfil_add_hook(int (*func)(void *, struct mbuf **, struct ifnet *, int,
ph->ph_nhooks++;
}
PFIL_WUNLOCK(ph);
return 0;
return (0);
locked_error:
PFIL_WUNLOCK(ph);
error:
@ -216,12 +214,12 @@ pfil_add_hook(int (*func)(void *, struct mbuf **, struct ifnet *, int,
free(pfh1, M_IFADDR);
if (pfh2 != NULL)
free(pfh2, M_IFADDR);
return err;
return (err);
}
/*
* pfil_remove_hook removes a specific function from the packet filter
* hook list.
* pfil_remove_hook removes a specific function from the packet filter hook
* list.
*/
int
pfil_remove_hook(int (*func)(void *, struct mbuf **, struct ifnet *, int,
@ -230,7 +228,6 @@ pfil_remove_hook(int (*func)(void *, struct mbuf **, struct ifnet *, int,
int err = 0;
PFIL_WLOCK(ph);
if (flags & PFIL_IN) {
err = pfil_list_remove(&ph->ph_in, func, arg);
if (err == 0)
@ -242,8 +239,7 @@ pfil_remove_hook(int (*func)(void *, struct mbuf **, struct ifnet *, int,
ph->ph_nhooks--;
}
PFIL_WUNLOCK(ph);
return err;
return (err);
}
static int
@ -257,17 +253,17 @@ pfil_list_add(pfil_list_t *list, struct packet_filter_hook *pfh1, int flags)
TAILQ_FOREACH(pfh, list, pfil_link)
if (pfh->pfil_func == pfh1->pfil_func &&
pfh->pfil_arg == pfh1->pfil_arg)
return EEXIST;
return (EEXIST);
/*
* insert the input list in reverse order of the output list
* so that the same path is followed in or out of the kernel.
* Insert the input list in reverse order of the output list so that
* the same path is followed in or out of the kernel.
*/
if (flags & PFIL_IN)
TAILQ_INSERT_HEAD(list, pfh1, pfil_link);
else
TAILQ_INSERT_TAIL(list, pfh1, pfil_link);
return 0;
return (0);
}
/*
@ -285,30 +281,32 @@ pfil_list_remove(pfil_list_t *list,
if (pfh->pfil_func == func && pfh->pfil_arg == arg) {
TAILQ_REMOVE(list, pfh, pfil_link);
free(pfh, M_IFADDR);
return 0;
return (0);
}
return ENOENT;
return (ENOENT);
}
/****************
* Stuff that must be initialized for every instance
* (including the first of course).
/*
* Stuff that must be initialized for every instance (including the first of
* course).
*/
static int
vnet_pfil_init(const void *unused)
{
LIST_INIT(&V_pfil_head_list);
return (0);
}
/***********************
/*
* Called for the removal of each instance.
*/
static int
vnet_pfil_uninit(const void *unused)
{
/* XXX should panic if list is not empty */
return 0;
return (0);
}
/* Define startup order. */
@ -317,17 +315,17 @@ vnet_pfil_uninit(const void *unused)
#define PFIL_VNET_ORDER (PFIL_MODEVENT_ORDER + 2) /* Later still. */
/*
* Starting up.
* Starting up.
*
* VNET_SYSINIT is called for each existing vnet and each new vnet.
*/
VNET_SYSINIT(vnet_pfil_init, PFIL_SYSINIT_ORDER, PFIL_VNET_ORDER,
vnet_pfil_init, NULL);
vnet_pfil_init, NULL);
/*
* Closing up shop. These are done in REVERSE ORDER,
* Not called on reboot.
* Closing up shop. These are done in REVERSE ORDER. Not called on reboot.
*
* VNET_SYSUNINIT is called for each exiting vnet as it exits.
*/
VNET_SYSUNINIT(vnet_pfil_uninit, PFIL_SYSINIT_ORDER, PFIL_VNET_ORDER,
vnet_pfil_uninit, NULL);
vnet_pfil_uninit, NULL);