[Qemu-devel] [PATCH 2/3] Add -bootp option for slip

[Anthony Liguori <anthony@codemonkey.ws>]

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The following patch adds a -bootp option.  This option takes a filename 
that will be advertised as the BOOTP filename.

Regards,

Anthony Liguori

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diff -r ea5eb79ade8d slirp/bootp.c
--- a/slirp/bootp.c	Thu Feb 15 16:49:28 2007 -0600
+++ b/slirp/bootp.c	Thu Feb 15 16:49:30 2007 -0600
@@ -38,6 +38,8 @@ typedef struct {
 
 BOOTPClient bootp_clients[NB_ADDR];
 
+const char *bootp_filename;
+
 static const uint8_t rfc1533_cookie[] = { RFC1533_COOKIE };
 
 #ifdef DEBUG
@@ -168,6 +170,10 @@ static void bootp_reply(struct bootp_t *
             goto new_addr;
         }
     }
+
+    if (bootp_filename)
+        snprintf(rbp->bp_file, sizeof(rbp->bp_file), "%s", bootp_filename);
+
     dprintf("offered addr=%08x\n", ntohl(daddr.sin_addr.s_addr));
 
     saddr.sin_addr.s_addr = htonl(ntohl(special_addr.s_addr) | CTL_ALIAS);
diff -r ea5eb79ade8d vl.c
--- a/vl.c	Thu Feb 15 16:49:28 2007 -0600
+++ b/vl.c	Thu Feb 15 16:57:07 2007 -0600
@@ -6488,6 +6488,7 @@ void help(void)
            "\n"
 #ifdef CONFIG_SLIRP
            "-tftp prefix    allow tftp access to files starting with prefix [-net user]\n"
+           "-bootp file     advertise file in BOOTP replies\n"
 #ifndef _WIN32
            "-smb dir        allow SMB access to files in 'dir' [-net user]\n"
 #endif
@@ -6576,6 +6577,7 @@ enum {
 
     QEMU_OPTION_net,
     QEMU_OPTION_tftp,
+    QEMU_OPTION_bootp,
     QEMU_OPTION_smb,
     QEMU_OPTION_redir,
 
@@ -6652,6 +6654,7 @@ const QEMUOption qemu_options[] = {
     { "net", HAS_ARG, QEMU_OPTION_net},
 #ifdef CONFIG_SLIRP
     { "tftp", HAS_ARG, QEMU_OPTION_tftp },
+    { "bootp", HAS_ARG, QEMU_OPTION_bootp },
 #ifndef _WIN32
     { "smb", HAS_ARG, QEMU_OPTION_smb },
 #endif
@@ -7185,6 +7188,9 @@ int main(int argc, char **argv)
             case QEMU_OPTION_tftp:
 		tftp_prefix = optarg;
                 break;
+            case QEMU_OPTION_bootp:
+                bootp_filename = optarg;
+                break;
 #ifndef _WIN32
             case QEMU_OPTION_smb:
 		net_slirp_smb(optarg);
diff -r ea5eb79ade8d vl.h
--- a/vl.h	Thu Feb 15 16:49:28 2007 -0600
+++ b/vl.h	Thu Feb 15 16:49:30 2007 -0600
@@ -163,6 +163,7 @@ extern int no_quit;
 extern int no_quit;
 extern int semihosting_enabled;
 extern int autostart;
+extern const char *bootp_filename;
 
 #define MAX_OPTION_ROMS 16
 extern const char *option_rom[MAX_OPTION_ROMS];
diff -r ea5eb79ade8d qemu-doc.texi
--- a/qemu-doc.texi	Thu Feb 15 16:49:28 2007 -0600
+++ b/qemu-doc.texi	Thu Feb 15 16:57:23 2007 -0600
@@ -445,6 +445,16 @@ guest must be configured in binary mode 
 guest must be configured in binary mode (use the command @code{bin} of
 the Unix TFTP client). The host IP address on the guest is as usual
 10.0.2.2.
+
+@item -bootp file
+When using the user mode network stack, broadcast @var{file} as the BOOTP
+filename.  In conjunction with @option{-tftp}, this can be used to network boot
+a guest from a local directory.
+
+Example (using pxelinux):
+@example
+qemu -hda linux.img -boot n -tftp /path/to/tftp/files -bootp /pxelinux.0
+@end example
 
 @item -smb dir
 When using the user mode network stack, activate a built-in SMB