ShellPkg: Enhance ping6 to select the interface automatically

v2:
* Refine the code to make it more readable.

This patch is used to support no source IP specified case while
multiple NICs existed in the platform. The command will select the
first both connected and configured interface automatically.
Note: Source address is always required when pinging a
link-local address.

Cc: Bhupesh Sharma <bhupesh.sharma@nxp.com>
Cc: Jaben Carsey <jaben.carsey@intel.com>
Cc: Ye Ting <ting.ye@intel.com>
Cc: Fu Siyuan <siyuan.fu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
(cherry picked from commit 76cd3ffab6105c3c535125c1907ccdb4a9e19bbd)

1 files changed, 95 insertions, 71 deletions

diff --git a/ShellPkg/Library/UefiShellNetwork2CommandsLib/Ping6.c b/ShellPkg/Library/UefiShellNetwork2CommandsLib/Ping6.c
index af7d08f3ec..e4ae977eb5 100644
--- a/ShellPkg/Library/UefiShellNetwork2CommandsLib/Ping6.c
+++ b/ShellPkg/Library/UefiShellNetwork2CommandsLib/Ping6.c
@@ -663,6 +663,8 @@ Ping6CreateIpInstance (
   UINTN                            HandleIndex;

   UINTN                            HandleNum;

   EFI_HANDLE                       *HandleBuffer;

+  BOOLEAN                          UnspecifiedSrc;

+  BOOLEAN                          MediaPresent;

   EFI_SERVICE_BINDING_PROTOCOL     *Ip6Sb;

   EFI_IP6_CONFIG_PROTOCOL          *Ip6Cfg;

   EFI_IP6_CONFIG_DATA              Ip6Config;

@@ -671,10 +673,12 @@ Ping6CreateIpInstance (
   EFI_IPv6_ADDRESS                 *Addr;

   UINTN                            AddrIndex;

 

-  HandleBuffer = NULL;

-  Ip6Sb        = NULL;

-  IfInfo       = NULL;

-  IfInfoSize   = 0;

+  HandleBuffer      = NULL;

+  UnspecifiedSrc    = FALSE;

+  MediaPresent      = TRUE;

+  Ip6Sb             = NULL;

+  IfInfo            = NULL;

+  IfInfoSize        = 0;

 

   //

   // Locate all the handles with ip6 service binding protocol.

@@ -689,17 +693,23 @@ Ping6CreateIpInstance (
   if (EFI_ERROR (Status) || (HandleNum == 0)) {

     return EFI_ABORTED;

   }

+

+  if (NetIp6IsUnspecifiedAddr (&Private->SrcAddress)) {

+    //

+    // SrcAddress is unspecified. So, both connected and configured interface will be automatic selected. 

+    //

+    UnspecifiedSrc = TRUE;

+  }

+  

   //

-  // Source address is required when pinging a link-local address on multi-

-  // interfaces host.

+  // Source address is required when pinging a link-local address.

   //

-  if (NetIp6IsLinkLocalAddr (&Private->DstAddress) &&

-      NetIp6IsUnspecifiedAddr (&Private->SrcAddress) &&

-      (HandleNum > 1)) {

+  if (NetIp6IsLinkLocalAddr (&Private->DstAddress) && UnspecifiedSrc) {

     ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_PING6_INVALID_SOURCE), gShellNetwork2HiiHandle);

     Status = EFI_INVALID_PARAMETER;

     goto ON_ERROR;

   }

+  

   //

   // For each ip6 protocol, check interface addresses list.

   //

@@ -709,6 +719,19 @@ Ping6CreateIpInstance (
     IfInfo     = NULL;

     IfInfoSize = 0;

 

+    if (UnspecifiedSrc) {

+      //

+      // Check media.

+      //

+      NetLibDetectMedia (HandleBuffer[HandleIndex], &MediaPresent);

+      if (!MediaPresent) {

+        //

+        // Skip this one.

+        //

+        continue;

+      }

+    }

+

     Status = gBS->HandleProtocol (

                     HandleBuffer[HandleIndex],

                     &gEfiIp6ServiceBindingProtocolGuid,

@@ -718,80 +741,81 @@ Ping6CreateIpInstance (
       goto ON_ERROR;

     }

 

-    if (NetIp6IsUnspecifiedAddr (&Private->SrcAddress)) {

-      //

-      // No need to match interface address.

-      //

-      break;

-    } else {

-      //

-      // Ip6config protocol and ip6 service binding protocol are installed

-      // on the same handle.

-      //

-      Status = gBS->HandleProtocol (

-                      HandleBuffer[HandleIndex],

-                      &gEfiIp6ConfigProtocolGuid,

-                      (VOID **) &Ip6Cfg

-                      );

+    //

+    // Ip6config protocol and ip6 service binding protocol are installed

+    // on the same handle.

+    //

+    Status = gBS->HandleProtocol (

+                    HandleBuffer[HandleIndex],

+                    &gEfiIp6ConfigProtocolGuid,

+                    (VOID **) &Ip6Cfg

+                    );

 

-      if (EFI_ERROR (Status)) {

-        goto ON_ERROR;

-      }

-      //

-      // Get the interface information size.

-      //

-      Status = Ip6Cfg->GetData (

-                         Ip6Cfg,

-                         Ip6ConfigDataTypeInterfaceInfo,

-                         &IfInfoSize,

-                         NULL

-                         );

-

-      if (Status != EFI_BUFFER_TOO_SMALL) {

-        ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_PING6_IP6CFG_GETDATA), gShellNetwork2HiiHandle, Status);

-        goto ON_ERROR;

-      }

+    if (EFI_ERROR (Status)) {

+      goto ON_ERROR;

+    }

+    //

+    // Get the interface information size.

+    //

+    Status = Ip6Cfg->GetData (

+                       Ip6Cfg,

+                       Ip6ConfigDataTypeInterfaceInfo,

+                       &IfInfoSize,

+                       NULL

+                       );

+

+    if (Status != EFI_BUFFER_TOO_SMALL) {

+      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_PING6_IP6CFG_GETDATA), gShellNetwork2HiiHandle, Status);

+      goto ON_ERROR;

+    }

 

-      IfInfo = AllocateZeroPool (IfInfoSize);

+    IfInfo = AllocateZeroPool (IfInfoSize);

 

-      if (IfInfo == NULL) {

-        Status = EFI_OUT_OF_RESOURCES;

-        goto ON_ERROR;

-      }

-      //

-      // Get the interface info.

-      //

-      Status = Ip6Cfg->GetData (

-                         Ip6Cfg,

-                         Ip6ConfigDataTypeInterfaceInfo,

-                         &IfInfoSize,

-                         IfInfo

-                         );

+    if (IfInfo == NULL) {

+      Status = EFI_OUT_OF_RESOURCES;

+      goto ON_ERROR;

+    }

+    //

+    // Get the interface info.

+    //

+    Status = Ip6Cfg->GetData (

+                       Ip6Cfg,

+                       Ip6ConfigDataTypeInterfaceInfo,

+                       &IfInfoSize,

+                       IfInfo

+                       );

 

-      if (EFI_ERROR (Status)) {

-        ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_PING6_IP6CFG_GETDATA), gShellNetwork2HiiHandle, Status);

-        goto ON_ERROR;

-      }

-      //

-      // Check whether the source address is one of the interface addresses.

-      //

-      for (AddrIndex = 0; AddrIndex < IfInfo->AddressInfoCount; AddrIndex++) {

+    if (EFI_ERROR (Status)) {

+      ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_PING6_IP6CFG_GETDATA), gShellNetwork2HiiHandle, Status);

+      goto ON_ERROR;

+    }

+    //

+    // Check whether the source address is one of the interface addresses.

+    //

+    for (AddrIndex = 0; AddrIndex < IfInfo->AddressInfoCount; AddrIndex++) {

+      Addr = &(IfInfo->AddressInfo[AddrIndex].Address);

 

-        Addr = &(IfInfo->AddressInfo[AddrIndex].Address);

-        if (EFI_IP6_EQUAL (&Private->SrcAddress, Addr)) {

+      if (UnspecifiedSrc) {

+        if (!NetIp6IsUnspecifiedAddr (Addr) && !NetIp6IsLinkLocalAddr (Addr)) {

           //

-          // Match a certain interface address.

+          // Select the interface automatically.

           //

+          CopyMem(&Private->SrcAddress, Addr, sizeof(Private->SrcAddress));

           break;

         }

-      }

-

-      if (AddrIndex < IfInfo->AddressInfoCount) {

+      } else if (EFI_IP6_EQUAL (&Private->SrcAddress, Addr)) {

         //

-        // Found a nic handle with right interface address.

+        // Match a certain interface address.

         //

         break;

-      }

+      } 

+    }

+

+    if (AddrIndex < IfInfo->AddressInfoCount) {

+      //

+      // Found a nic handle with right interface address.

+      //

+      break;

     }

 

     FreePool (IfInfo);