git: f2c6540dfa36 - stable/12 - loader: tftp client should use server address from rootip

The branch stable/12 has been updated by kevans:

URL: https://cgit.FreeBSD.org/src/commit/?id=f2c6540dfa3674b3724b6a0b8cf02f8a6435081a

commit f2c6540dfa3674b3724b6a0b8cf02f8a6435081a
Author:     Toomas Soome <tsoome@FreeBSD.org>
AuthorDate: 2021-08-02 12:27:38 +0000
Commit:     Kyle Evans <kevans@FreeBSD.org>
CommitDate: 2021-10-08 01:16:00 +0000

    loader: tftp client should use server address from rootip
    
    servip is set from bootp bp_siaddr (if present) and rootip is
    set immediately from servip in tha sane bootp code.
    
    However, the common/dev_net.c does only set rootip (based on
    url processing etc). Therefore, we should also use rootip in tftp
    reader.
    
    Fixes hung tftp based boot when bp_siaddr is not provided.
    
    (cherry picked from commit 1b1bb6f178802a4522824e0268634a99cdbda098)
---
 stand/libsa/tftp.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/stand/libsa/tftp.c b/stand/libsa/tftp.c
index 3892f2aad86a..22e03ab58da1 100644
--- a/stand/libsa/tftp.c
+++ b/stand/libsa/tftp.c
@@ -38,7 +38,7 @@ __FBSDID("$FreeBSD$");
  * Simple TFTP implementation for libsa.
  * Assumes:
  *  - socket descriptor (int) at open_file->f_devdata
- *  - server host IP in global servip
+ *  - server host IP in global rootip
  * Restrictions:
  *  - read only
  *  - lseek only with SEEK_SET or SEEK_CUR
@@ -83,8 +83,6 @@ struct fs_ops tftp_fsops = {
 	.fo_readdir = null_readdir
 };
 
-extern struct in_addr servip;
-
 static int	tftpport = 2000;
 static int	is_open = 0;
 
@@ -460,7 +458,7 @@ tftp_open(const char *path, struct open_file *f)
 		return (EINVAL);
 	}
 
-	io->destip = servip;
+	io->destip = rootip;
 	tftpfile->off = 0;
 	pathsize = (strlen(rootpath) + 1 + strlen(path) + 1) * sizeof(char);
 	tftpfile->path = malloc(pathsize);