pf: convert DIOCSETDEBUG to netlink

Sponsored by:	Rubicon Communications, LLC ("Netgate")

lib/libpfctl/libpfctl.c

@@ -2490,3 +2490,35 @@ pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k,
 
 	return (e.error);
 }
+
+int
+pfctl_set_debug(struct pfctl_handle *h, uint32_t level)
+{
+	struct snl_writer nw;
+	struct snl_errmsg_data e = {};
+	struct nlmsghdr *hdr;
+	uint32_t seq_id;
+	int family_id;
+
+	family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME);
+	if (family_id == 0)
+		return (ENOTSUP);
+
+	snl_init_writer(&h->ss, &nw);
+	hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG);
+
+	snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level);
+
+	if ((hdr = snl_finalize_msg(&nw)) == NULL)
+		return (ENXIO);
+
+	seq_id = hdr->nlmsg_seq;
+
+	if (! snl_send_message(&h->ss, hdr))
+		return (ENXIO);
+
+	while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) {
+	}
+
+	return (e.error);
+}

lib/libpfctl/libpfctl.h

@@ -492,5 +492,6 @@ struct pfctl_natlook {
 };
 int	pfctl_natlook(struct pfctl_handle *h,
 	    const struct pfctl_natlook_key *k, struct pfctl_natlook *r);
+int	pfctl_set_debug(struct pfctl_handle *h, uint32_t level);
 
 #endif

sbin/pfctl/parse.y

@@ -763,7 +763,7 @@ option		: SET REASSEMBLE yesno optnodf		{
 				free($3);
 				YYERROR;
 			}
-			if (pfctl_set_debug(pf, $3) != 0) {
+			if (pfctl_do_set_debug(pf, $3) != 0) {
 				yyerror("error setting debuglevel %s", $3);
 				free($3);
 				YYERROR;

sbin/pfctl/pfctl.c

@@ -2695,7 +2695,7 @@ pfctl_cfg_syncookies(struct pfctl *pf, uint8_t val, struct pfctl_watermarks *w)
 }
 
 int
-pfctl_set_debug(struct pfctl *pf, char *d)
+pfctl_do_set_debug(struct pfctl *pf, char *d)
 {
 	u_int32_t	level;
 
@@ -2719,7 +2719,7 @@ pfctl_set_debug(struct pfctl *pf, char *d)
 	level = pf->debug;
 
 	if ((pf->opts & PF_OPT_NOACTION) == 0)
-		if (ioctl(dev, DIOCSETDEBUG, &level))
+		if (pfctl_set_debug(pfh, level))
 			err(1, "DIOCSETDEBUG");
 
 	if (pf->opts & PF_OPT_VERBOSE)
@@ -2731,7 +2731,7 @@ pfctl_set_debug(struct pfctl *pf, char *d)
 int
 pfctl_load_debug(struct pfctl *pf, unsigned int level)
 {
-	if (ioctl(pf->dev, DIOCSETDEBUG, &level)) {
+	if (pfctl_set_debug(pf->h, level)) {
 		warnx("DIOCSETDEBUG");
 		return (1);
 	}
@@ -2777,7 +2777,7 @@ pfctl_set_interface_flags(struct pfctl *pf, char *ifname, int flags, int how)
 void
 pfctl_debug(int dev, u_int32_t level, int opts)
 {
-	if (ioctl(dev, DIOCSETDEBUG, &level))
+	if (pfctl_set_debug(pfh, level))
 		err(1, "DIOCSETDEBUG");
 	if ((opts & PF_OPT_QUIET) == 0) {
 		fprintf(stderr, "debug level set to '");

sbin/pfctl/pfctl_parser.h

@@ -291,7 +291,7 @@ int	pfctl_set_optimization(struct pfctl *, const char *);
 int	pfctl_set_limit(struct pfctl *, const char *, unsigned int);
 int	pfctl_set_logif(struct pfctl *, char *);
 int	pfctl_set_hostid(struct pfctl *, u_int32_t);
-int	pfctl_set_debug(struct pfctl *, char *);
+int	pfctl_do_set_debug(struct pfctl *, char *);
 int	pfctl_set_interface_flags(struct pfctl *, char *, int, int);
 int	pfctl_cfg_syncookies(struct pfctl *, uint8_t, struct pfctl_watermarks *);
 

sys/netpfil/pf/pf_nl.c

@@ -1320,6 +1320,35 @@ pf_handle_natlook(struct nlmsghdr *hdr, struct nl_pstate *npt)
 	return (0);
 }
 
+struct pf_nl_set_debug
+{
+	uint32_t level;
+};
+#define	_OUT(_field)	offsetof(struct pf_nl_set_debug, _field)
+static const struct nlattr_parser nla_p_set_debug[] = {
+	{ .type = PF_SD_LEVEL, .off = _OUT(level), .cb = nlattr_get_uint32 },
+};
+static const struct nlfield_parser nlf_p_set_debug[] = {};
+#undef _OUT
+NL_DECLARE_PARSER(set_debug_parser, struct genlmsghdr, nlf_p_set_debug, nla_p_set_debug);
+
+static int
+pf_handle_set_debug(struct nlmsghdr *hdr, struct nl_pstate *npt)
+{
+	struct pf_nl_set_debug attrs = {};
+	int error;
+
+	error = nl_parse_nlmsg(hdr, &set_debug_parser, npt, &attrs);
+	if (error != 0)
+		return (error);
+
+	PF_RULES_WLOCK();
+	V_pf_status.debug = attrs.level;
+	PF_RULES_WUNLOCK();
+
+	return (0);
+}
+
 static const struct nlhdr_parser *all_parsers[] = {
 	&state_parser,
 	&addrule_parser,
@@ -1327,6 +1356,7 @@ static const struct nlhdr_parser *all_parsers[] = {
 	&clear_states_parser,
 	&set_statusif_parser,
 	&natlook_parser,
+	&set_debug_parser,
 };
 
 static int family_id;
@@ -1423,6 +1453,13 @@ static const struct genl_cmd pf_cmds[] = {
 		.cmd_flags = GENL_CMD_CAP_DUMP | GENL_CMD_CAP_HASPOL,
 		.cmd_priv = PRIV_NETINET_PF,
 	},
+	{
+		.cmd_num = PFNL_CMD_SET_DEBUG,
+		.cmd_name = "SET_DEBUG",
+		.cmd_cb = pf_handle_set_debug,
+		.cmd_flags = GENL_CMD_CAP_DO | GENL_CMD_CAP_HASPOL,
+		.cmd_priv = PRIV_NETINET_PF,
+	},
 };
 
 void

sys/netpfil/pf/pf_nl.h

@@ -49,6 +49,7 @@ enum {
 	PFNL_CMD_GET_STATUS = 11,
 	PFNL_CMD_CLEAR_STATUS = 12,
 	PFNL_CMD_NATLOOK = 13,
+	PFNL_CMD_SET_DEBUG = 14,
 	__PFNL_CMD_MAX,
 };
 #define PFNL_CMD_MAX (__PFNL_CMD_MAX -1)
@@ -328,6 +329,11 @@ enum pf_natlook_types_t {
 	PF_NL_DST_PORT		= 7, /* u16 */
 };
 
+enum pf_set_debug_types_t {
+	PF_SD_UNSPEC,
+	PF_SD_LEVEL		= 1, /* u32 */
+};
+
 #ifdef _KERNEL
 
 void	pf_nl_register(void);