packets: Fix misaligned data accesses for MPLS and SCTP fields.

[cascardo/ovs.git] / lib / ofp-print.c

diff --git a/lib/ofp-print.c b/lib/ofp-print.c
index 7e0963c..60e2148 100644 (file)
--- a/lib/ofp-print.c
+++ b/lib/ofp-print.c
@@ -68,17 +68,18 @@ ofp_packet_to_string(const void *data, size_t len)
     flow_extract(&buf, &md, &flow);
     flow_format(&ds, &flow);
 
-    l4_size = ofpbuf_get_l4_size(&buf);
+    l4_size = ofpbuf_l4_size(&buf);
 
     if (flow.nw_proto == IPPROTO_TCP && l4_size >= TCP_HEADER_LEN) {
-        struct tcp_header *th = ofpbuf_get_l4(&buf);
+        struct tcp_header *th = ofpbuf_l4(&buf);
         ds_put_format(&ds, " tcp_csum:%"PRIx16, ntohs(th->tcp_csum));
     } else if (flow.nw_proto == IPPROTO_UDP && l4_size >= UDP_HEADER_LEN) {
-        struct udp_header *uh = ofpbuf_get_l4(&buf);
+        struct udp_header *uh = ofpbuf_l4(&buf);
         ds_put_format(&ds, " udp_csum:%"PRIx16, ntohs(uh->udp_csum));
     } else if (flow.nw_proto == IPPROTO_SCTP && l4_size >= SCTP_HEADER_LEN) {
-        struct sctp_header *sh = ofpbuf_get_l4(&buf);
-        ds_put_format(&ds, " sctp_csum:%"PRIx32, ntohl(sh->sctp_csum));
+        struct sctp_header *sh = ofpbuf_l4(&buf);
+        ds_put_format(&ds, " sctp_csum:%"PRIx32,
+                      ntohl(get_16aligned_be32(&sh->sctp_csum)));
     }
 
     ds_put_char(&ds, '\n');