Cross Reference: /src/sys/net/npf/npf

Lines Matching refs:npf
32  * NPF network interface handling.
34  * NPF uses its own interface IDs (npf-if-id).  These IDs start from 1.
40  * - Bind a symbolic interface name to NPF interface ID.
41  * - Associate NPF interface ID when the network interface is attached.
43  * When NPF configuration is (re)loaded, each referenced network interface
49  * To avoid race conditions when an active NPF configuration is updated or
74 #define	NPF_IFMAP_SLOT2ID(npf, slot)	((npf)->ifmap_off + (slot) + 1)
75 #define	NPF_IFMAP_ID2SLOT(npf, id)	\
76     ((id) - atomic_load_relaxed(&(npf)->ifmap_off) - 1)
79 npf_ifmap_init(npf_t *npf, const npf_ifops_t *ifops)
84 	ifops->flush(npf, (void *)(uintptr_t)0);
86 	mutex_init(&npf->ifmap_lock, MUTEX_DEFAULT, IPL_SOFTNET);
87 	npf->ifmap = kmem_zalloc(nbytes, KM_SLEEP);
88 	npf->ifmap_cnt = 0;
89 	npf->ifmap_off = 0;
90 	npf->ifops = ifops;
94 npf_ifmap_fini(npf_t *npf)
97 	mutex_destroy(&npf->ifmap_lock);
98 	kmem_free(npf->ifmap, nbytes);
102 npf_ifmap_lookup(npf_t *npf, const char *ifname)
104 	KASSERT(mutex_owned(&npf->ifmap_lock));
106 	for (unsigned i = 0; i < npf->ifmap_cnt; i++) {
107 		npf_ifmap_t *ifmap = &npf->ifmap[i];
110 			return NPF_IFMAP_SLOT2ID(npf, i);
118  * NPF network ID on success (non-zero).
120  * This routine is mostly called on NPF configuration (re)load for the
124 npf_ifmap_register(npf_t *npf, const char *ifname)
130 	mutex_enter(&npf->ifmap_lock);
131 	if ((id = npf_ifmap_lookup(npf, ifname)) != NPF_IFMAP_NOID) {
134 	if (npf->ifmap_cnt == NPF_MAX_IFMAP) {
139 	KASSERT(npf->ifmap_cnt < NPF_MAX_IFMAP);
142 	i = npf->ifmap_cnt++;
143 	ifmap = &npf->ifmap[i];
145 	id = NPF_IFMAP_SLOT2ID(npf, i);
147 	if ((ifp = npf->ifops->lookup(npf, ifname)) != NULL) {
148 		npf->ifops->setmeta(npf, ifp, (void *)(uintptr_t)id);
151 	mutex_exit(&npf->ifmap_lock);
156 npf_ifmap_flush(npf_t *npf)
158 	mutex_enter(&npf->ifmap_lock);
159 	npf->ifops->flush(npf, (void *)(uintptr_t)NPF_IFMAP_NOID);
160 	for (unsigned i = 0; i < npf->ifmap_cnt; i++) {
161 		npf->ifmap[i].ifname[0] = '\0';
163 	npf->ifmap_cnt = 0;
169 	if (npf->ifmap_off < (UINT_MAX - NPF_MAX_IFMAP)) {
170 		npf->ifmap_off += NPF_MAX_IFMAP;
172 		npf->ifmap_off = 0;
174 	mutex_exit(&npf->ifmap_lock);
183  * => This routine is lock-free; if the NPF configuration is flushed
188 npf_ifmap_getid(npf_t *npf, const ifnet_t *ifp)
190 	const unsigned id = (uintptr_t)npf->ifops->getmeta(npf, ifp);
199 npf_ifmap_copylogname(npf_t *npf, unsigned id, char *buf, size_t len)
201 	const unsigned i = NPF_IFMAP_ID2SLOT(npf, id);
210 		const npf_ifmap_t *ifmap = &npf->ifmap[i];
218 npf_ifmap_copyname(npf_t *npf, unsigned id, char *buf, size_t len)
220 	mutex_enter(&npf->ifmap_lock);
221 	npf_ifmap_copylogname(npf, id, buf, len);
222 	mutex_exit(&npf->ifmap_lock);
226 npfk_ifmap_attach(npf_t *npf, ifnet_t *ifp)
228 	const npf_ifops_t *ifops = npf->ifops;
231 	mutex_enter(&npf->ifmap_lock);
232 	id = npf_ifmap_lookup(npf, ifops->getname(npf, ifp));
233 	ifops->setmeta(npf, ifp, (void *)(uintptr_t)id);
234 	mutex_exit(&npf->ifmap_lock);
238 npfk_ifmap_detach(npf_t *npf, ifnet_t *ifp)
241 	mutex_enter(&npf->ifmap_lock);
242 	npf->ifops->setmeta(npf, ifp, (void *)(uintptr_t)NPF_IFMAP_NOID);
243 	mutex_exit(&npf->ifmap_lock);
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