bsd/net/if_utun_crypto_dtls.c

136 is_pattern_all_zeroes (u_int8_t *pattern,
141 	if (!pattern || !pattern_len) return FALSE; // false if args are NULL
144 		if (pattern[i] != 0) return FALSE;
150 is_pattern_masked_all_zeroes (u_int8_t *pattern,
156 	if (!pattern || !pattern_mask || !pattern_len) return FALSE; // false if args are NULL
159 		if ((pattern[i] & pattern_mask[i])) return FALSE;
165 utun_ctl_calc_dtls_framer_pattern_and_mask (u_int8_t *pattern_masked, u_int8_t *pattern, u_int8_t *mask, int len)
169 		pattern_masked[i] = (pattern[i] & mask[i]);
260 	// prepend/encapsulate the output pattern
473 		// Input framer (for tunnel hdr detection and decapsulation). there can be several pattern that identify data (vs. control) packets.
476 		// pattern and mask have to be configured
480 			printf("%s: invalid dtls in-pattern %d mask %d\n", __FUNCTION__,
485 		// pattern and mask lengths have to match
488 			printf("%s: inconsistent dtls in-pattern %d mask %d\n",__FUNCTION__,
496 			printf("%s: inconsistent dtls in-pattern %d mask %d, total %d\n",__FUNCTION__,
506 			printf("%s: in-pattern is all zeros, len %d\n",__FUNCTION__,
514 			printf("%s: in-pattern-mask is all zeros, len %d\n",__FUNCTION__,
523 			printf("%s: in-pattern-masked is all zeros, len %d\n",__FUNCTION__,
565 		// allocate and fill the pattern
576 		// allocate and fill the pattern-mask
601 		// pattern and mask have to be configured
626 		// any length field should be within the bounds of the out-pattern
641 		// any sequence field should be within the bounds of the out-pattern
686 		// alloc and fill in the out-pattern
730 			// no pattern means... clear all
736 		// when both specified, pattern and mask lengths have to match
1007 	 * make sure that family matches what the UTUN was configured for (punt those that don't... along with all that fail to match the data pattern.