Add more check to make code more safely.

Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ouyang Qian  <ouyang.qian@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13903 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
ydong10
2012-11-01 02:10:31 +00:00
parent 0d5df2aba7
commit a56b6e03e2
6 changed files with 11 additions and 1 deletions

View File

@@ -240,6 +240,7 @@ Ip4IcmpReplyEcho (
// update is omitted.
//
Icmp = (IP4_ICMP_QUERY_HEAD *) NetbufGetByte (Data, 0, NULL);
ASSERT (Icmp != NULL);
Icmp->Head.Type = ICMP_ECHO_REPLY;
Icmp->Head.Checksum = 0;
Icmp->Head.Checksum = (UINT16) (~NetblockChecksum ((UINT8 *) Icmp, Data->TotalSize));