254 pfil_head_register(struct pfil_head_args *pa)  in pfil_head_register()  argument
258 	MPASS(pa->pa_version == PFIL_VERSION);  in pfil_head_register()
263 	head->head_flags = pa->pa_flags;  in pfil_head_register()
264 	head->head_type = pa->pa_type;  in pfil_head_register()
265 	head->head_name = pa->pa_headname;  in pfil_head_register()
271 		if (strcmp(pa->pa_headname, list->head_name) == 0) {  in pfil_head_register()
273 			    pa->pa_headname);  in pfil_head_register()
307 pfil_add_hook(struct pfil_hook_args *pa)  in pfil_add_hook()  argument
311 	MPASS(pa->pa_version == PFIL_VERSION);  in pfil_add_hook()
314 	hook->hook_mbuf_chk = pa->pa_mbuf_chk;  in pfil_add_hook()
315 	hook->hook_mem_chk = pa->pa_mem_chk;  in pfil_add_hook()
316 	hook->hook_ruleset = pa->pa_ruleset;  in pfil_add_hook()
317 	hook->hook_flags = pa->pa_flags;  in pfil_add_hook()
318 	hook->hook_type = pa->pa_type;  in pfil_add_hook()
319 	hook->hook_modname = pa->pa_modname;  in pfil_add_hook()
320 	hook->hook_rulname = pa->pa_rulname;  in pfil_add_hook()
324 		if (strcmp(pa->pa_modname, list->hook_modname) == 0 &&  in pfil_add_hook()
325 		    strcmp(pa->pa_rulname, list->hook_rulname) == 0) {  in pfil_add_hook()
327 			    pa->pa_modname, pa->pa_rulname);  in pfil_add_hook()
336 pfil_unlink(struct pfil_link_args *pa, pfil_head_t head, pfil_hook_t hook)  in pfil_unlink()  argument
342 	if (pa->pa_flags & PFIL_IN) {  in pfil_unlink()
350 	if (pa->pa_flags & PFIL_OUT) {  in pfil_unlink()
372 pfil_link(struct pfil_link_args *pa)  in pfil_link()  argument
379 	MPASS(pa->pa_version == PFIL_VERSION);  in pfil_link()
381 	if ((pa->pa_flags & (PFIL_IN | PFIL_UNLINK)) == PFIL_IN)  in pfil_link()
385 	if ((pa->pa_flags & (PFIL_OUT | PFIL_UNLINK)) == PFIL_OUT)  in pfil_link()
391 	if (pa->pa_flags & PFIL_HEADPTR)  in pfil_link()
392 		head = pa->pa_head;  in pfil_link()
395 			if (strcmp(pa->pa_headname, head->head_name) == 0)  in pfil_link()
397 	if (pa->pa_flags & PFIL_HOOKPTR)  in pfil_link()
398 		hook = pa->pa_hook;  in pfil_link()
401 			if (strcmp(pa->pa_modname, hook->hook_modname) == 0 &&  in pfil_link()
402 			    strcmp(pa->pa_rulname, hook->hook_rulname) == 0)  in pfil_link()
409 	if (pa->pa_flags & PFIL_UNLINK)  in pfil_link()
410 		return (pfil_unlink(pa, head, hook));  in pfil_link()
413 	    ((hook->hook_flags & pa->pa_flags) & ~head->head_flags)) {  in pfil_link()
418 	if (pa->pa_flags & PFIL_IN)  in pfil_link()
424 	if (pa->pa_flags & PFIL_OUT)  in pfil_link()
431 	if (pa->pa_flags & PFIL_IN) {  in pfil_link()
437 		if (pa->pa_flags & PFIL_APPEND)  in pfil_link()
444 	if (pa->pa_flags & PFIL_OUT) {  in pfil_link()
450 		if (pa->pa_flags & PFIL_APPEND)  in pfil_link()