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author | rwatson <rwatson@FreeBSD.org> | 2009-07-23 20:46:49 +0000 |
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committer | rwatson <rwatson@FreeBSD.org> | 2009-07-23 20:46:49 +0000 |
commit | b3be1c6e3bd7d3b5cf946ddb04c1c5811644229b (patch) | |
tree | 0191b21173debdadfbf9f7565dfc5a8b9eefe94a /sys/net/if_gif.c | |
parent | fc8defe5dd957eaee1f1c841d45804df5bbf20f5 (diff) | |
download | FreeBSD-src-b3be1c6e3bd7d3b5cf946ddb04c1c5811644229b.zip FreeBSD-src-b3be1c6e3bd7d3b5cf946ddb04c1c5811644229b.tar.gz |
Introduce and use a sysinit-based initialization scheme for virtual
network stacks, VNET_SYSINIT:
- Add VNET_SYSINIT and VNET_SYSUNINIT macros to declare events that will
occur each time a network stack is instantiated and destroyed. In the
!VIMAGE case, these are simply mapped into regular SYSINIT/SYSUNINIT.
For the VIMAGE case, we instead use SYSINIT's to track their order and
properties on registration, using them for each vnet when created/
destroyed, or immediately on module load for already-started vnets.
- Remove vnet_modinfo mechanism that existed to serve this purpose
previously, as well as its dependency scheme: we now just use the
SYSINIT ordering scheme.
- Implement VNET_DOMAIN_SET() to allow protocol domains to declare that
they want init functions to be called for each virtual network stack
rather than just once at boot, compiling down to DOMAIN_SET() in the
non-VIMAGE case.
- Walk all virtualized kernel subsystems and make use of these instead
of modinfo or DOMAIN_SET() for init/uninit events. In some cases,
convert modular components from using modevent to using sysinit (where
appropriate). In some cases, do minor rejuggling of SYSINIT ordering
to make room for or better manage events.
Portions submitted by: jhb (VNET_SYSINIT), bz (cleanup)
Discussed with: jhb, bz, julian, zec
Reviewed by: bz
Approved by: re (VIMAGE blanket)
Diffstat (limited to 'sys/net/if_gif.c')
-rw-r--r-- | sys/net/if_gif.c | 60 |
1 files changed, 18 insertions, 42 deletions
diff --git a/sys/net/if_gif.c b/sys/net/if_gif.c index f663283..3d75dd4 100644 --- a/sys/net/if_gif.c +++ b/sys/net/if_gif.c @@ -96,19 +96,15 @@ static struct mtx gif_mtx; static MALLOC_DEFINE(M_GIF, "gif", "Generic Tunnel Interface"); static VNET_DEFINE(LIST_HEAD(, gif_softc), gif_softc_list); -static VNET_DEFINE(int, max_gif_nesting); -static VNET_DEFINE(int, parallel_tunnels); #define V_gif_softc_list VNET(gif_softc_list) -#define V_max_gif_nesting VNET(max_gif_nesting) -#define V_parallel_tunnels VNET(parallel_tunnels) #ifdef INET -VNET_DEFINE(int, ip_gif_ttl); +VNET_DEFINE(int, ip_gif_ttl) = GIF_TTL; #define V_ip_gif_ttl VNET(ip_gif_ttl) #endif #ifdef INET6 -VNET_DEFINE(int, ip6_gif_hlim); +VNET_DEFINE(int, ip6_gif_hlim) = GIF_HLIM; #define V_ip6_gif_hlim VNET(ip6_gif_hlim) #endif @@ -120,16 +116,6 @@ void (*ng_gif_detach_p)(struct ifnet *ifp); static void gif_start(struct ifnet *); static int gif_clone_create(struct if_clone *, int, caddr_t); static void gif_clone_destroy(struct ifnet *); -static int vnet_gif_iattach(const void *); - -#ifdef VIMAGE -static const vnet_modinfo_t vnet_gif_modinfo = { - .vmi_id = VNET_MOD_GIF, - .vmi_name = "gif", - .vmi_dependson = VNET_MOD_NET, - .vmi_iattach = vnet_gif_iattach -}; -#endif IFC_SIMPLE_DECLARE(gif, 0); @@ -149,6 +135,10 @@ SYSCTL_NODE(_net_link, IFT_GIF, gif, CTLFLAG_RW, 0, */ #define MAX_GIF_NEST 1 #endif + +static VNET_DEFINE(int, max_gif_nesting) = MAX_GIF_NEST; +#define V_max_gif_nesting VNET(max_gif_nesting) + SYSCTL_VNET_INT(_net_link_gif, OID_AUTO, max_nesting, CTLFLAG_RW, &VNET_NAME(max_gif_nesting), 0, "Max nested tunnels"); @@ -163,6 +153,13 @@ SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM, gifhlim, CTLFLAG_RW, * pair of addresses. Some applications require this functionality so * we allow control over this check here. */ +#ifdef XBONEHACK +static VNET_DEFINE(int, parallel_tunnels) = 1; +#else +static VNET_DEFINE(int, parallel_tunnels) = 0; +#endif +#define V_parallel_tunnels VNET(parallel_tunnels) + SYSCTL_VNET_INT(_net_link_gif, OID_AUTO, parallel_tunnels, CTLFLAG_RW, &VNET_NAME(parallel_tunnels), 0, "Allow parallel tunnels?"); @@ -259,26 +256,14 @@ gif_clone_destroy(ifp) free(sc, M_GIF); } -static int -vnet_gif_iattach(const void *unused __unused) +static void +vnet_gif_init(const void *unused __unused) { LIST_INIT(&V_gif_softc_list); - V_max_gif_nesting = MAX_GIF_NEST; -#ifdef XBONEHACK - V_parallel_tunnels = 1; -#else - V_parallel_tunnels = 0; -#endif -#ifdef INET - V_ip_gif_ttl = GIF_TTL; -#endif -#ifdef INET6 - V_ip6_gif_hlim = GIF_HLIM; -#endif - - return (0); } +VNET_SYSINIT(vnet_gif_init, SI_SUB_PSEUDO, SI_ORDER_MIDDLE, vnet_gif_init, + NULL); static int gifmodevent(mod, type, data) @@ -290,20 +275,11 @@ gifmodevent(mod, type, data) switch (type) { case MOD_LOAD: mtx_init(&gif_mtx, "gif_mtx", NULL, MTX_DEF); - -#ifdef VIMAGE - vnet_mod_register(&vnet_gif_modinfo); -#else - vnet_gif_iattach(NULL); -#endif if_clone_attach(&gif_cloner); - break; + case MOD_UNLOAD: if_clone_detach(&gif_cloner); -#ifdef VIMAGE - vnet_mod_deregister(&vnet_gif_modinfo); -#endif mtx_destroy(&gif_mtx); break; default: |