usr.sbin/bhyve/pci_e82545.c

1084 	unsigned hdrlen, vlen;
1208 	hdrlen = vlen = 0;
1212 		hdrlen = ETHER_ADDR_LEN*2;
1218 			hdrlen = MAX(hdrlen, ckinfo[0].ck_off + 2);
1220 			hdrlen = MAX(hdrlen, ckinfo[1].ck_off + 2);
1222 		if (hdrlen != 0 && iov[0].iov_len > hdrlen &&
1223 		    iov[0].iov_len < hdrlen + 100)
1224 			hdrlen = iov[0].iov_len;
1227 		hdrlen = sc->esc_txctx.tcp_seg_setup.fields.hdr_len;
1233 		if (hdrlen > 240) {
1234 			WPRINTF("TSO hdrlen too large: %d\r\n", hdrlen);
1248 		if (vlen != 0 && hdrlen < ETHER_ADDR_LEN*2) {
1249 			WPRINTF("TSO hdrlen too small for vlan insertion "
1250 			    "(%d vs %d) -- dropped\r\n", hdrlen,
1269 		if (hdrlen < ckinfo[0].ck_start + 6 ||
1270 		    hdrlen < ckinfo[0].ck_off + 2) {
1271 			WPRINTF("TSO hdrlen too small for IP fields (%d) "
1272 			    "-- dropped\r\n", hdrlen);
1276 			if (hdrlen < ckinfo[1].ck_start + 14 ||
1278 			    hdrlen < ckinfo[1].ck_off + 2)) {
1279 				WPRINTF("TSO hdrlen too small for TCP fields "
1280 				    "(%d) -- dropped\r\n", hdrlen);
1284 			if (hdrlen < ckinfo[1].ck_start + 8) {
1285 				WPRINTF("TSO hdrlen too small for UDP fields "
1286 				    "(%d) -- dropped\r\n", hdrlen);
1293 	if (hdrlen != 0) {
1294 		hdr = __builtin_alloca(hdrlen + vlen);
1296 		for (left = hdrlen, hdrp = hdr; left > 0;
1310 		iov->iov_len = hdrlen;
1318 		hdrlen += ETHER_VLAN_ENCAP_LEN;
1352 	    tcp ? "TCP" : "UDP", hdrlen, paylen, mss, iovcnt);
1369 		tiov[0].iov_len = hdrlen;
1383 		    seg, hdrlen, now, tiovcnt);
1389 			    htons(hdrlen - ckinfo[0].ck_start + now);
1395 			    htons(hdrlen - ckinfo[0].ck_start - 40 +
1401 		tcpsum += htons(hdrlen - ckinfo[1].ck_start + now);
1415 			    hdrlen - ckinfo[1].ck_start + now;