init: Indicate hardware checksum offloading features

During netif initialization, the handling of checksums is
printed per device with the info level. This commits adds
the following properties next to the protocols:
- For received traffic
 - `[+partial]`   Driver and device additionally support
                  receiving of partial checksummed packets.
 - `[+offloaded]` Driver and device additionally skip checksum
                  validation of already validated packets,
		  e.g., by a physical NIC on the host.
- For transmitted traffic
 - `[partial]`    Generated packets will only have a partial
                  checksum computed in software. The rest of
		  the checksum is intended to be computed by
		  a physical NIC on the host.

Signed-off-by: Simon Kuenzer <[email protected]>

init.c

@@ -269,9 +269,25 @@ static int liblwip_init(void)
 		}
 		IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_CHECK_UDP) {
 			uk_pr_info(" UDP");
+#if LWIP_CHECKSUM_PARTIAL
+			IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_PARTIAL_UDP) {
+				uk_pr_info("[+partial]");
+			}
+			IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_SKIPVALID_UDP) {
+				uk_pr_info("[+offloaded]");
+			}
+#endif /* LWIP_CHECKSUM_PARTIAL */
 		}
 		IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_CHECK_TCP) {
 			uk_pr_info(" TCP");
+#if LWIP_CHECKSUM_PARTIAL
+			IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_PARTIAL_TCP) {
+				uk_pr_info("[+partial]");
+			}
+			IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_SKIPVALID_TCP) {
+				uk_pr_info("[+offloaded]");
+			}
+#endif /* LWIP_CHECKSUM_PARTIAL */
 		}
 		IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_CHECK_ICMP) {
 			uk_pr_info(" ICMP");
@@ -288,9 +304,19 @@ static int liblwip_init(void)
 		}
 		IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_GEN_UDP) {
 			uk_pr_info(" UDP");
+#if LWIP_CHECKSUM_PARTIAL
+			IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_PARTIAL_UDP) {
+				uk_pr_info("[partial]");
+			}
+#endif /* LWIP_CHECKSUM_PARTIAL */
 		}
 		IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_GEN_TCP) {
 			uk_pr_info(" TCP");
+#if LWIP_CHECKSUM_PARTIAL
+			IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_PARTIAL_TCP) {
+				uk_pr_info("[partial]");
+			}
+#endif /* LWIP_CHECKSUM_PARTIAL */
 		}
 		IF__NETIF_CHECKSUM_ENABLED(nf, NETIF_CHECKSUM_GEN_ICMP) {
 			uk_pr_info(" ICMP");