[Qemu-devel] [PATCH 3/7] slirp: Add new command-line suboption "[, dhcpvendopt=optstring]" to "-net user"

[Fedor Lyakhov]

New command-line suboption "[,dhcpvendopt=optstring]" is defined in the
qapi-schema.json. If supplied, the optstring is passed to SLIRP initialization.

Signed-off-by: Fedor Lyakhov <fedor.lyak...@gmail.com>
---
 net/slirp.c      | 9 +++++----
 qapi-schema.json | 3 +++
 slirp/libslirp.h | 3 ++-
 slirp/slirp.c    | 2 +-
 4 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/net/slirp.c b/net/slirp.c
index cce026b..6c86568 100644
--- a/net/slirp.c
+++ b/net/slirp.c
@@ -137,7 +137,8 @@ static int net_slirp_init(NetClientState *peer, const char 
*model,
                           const char *vhostname, const char *tftp_export,
                           const char *bootfile, const char *vdhcp_start,
                           const char *vnameserver, const char *smb_export,
-                          const char *vsmbserver, const char **dnssearch)
+                          const char *vsmbserver, const char *dhcp_vendopt,
+                          const char **dnssearch)
 {
     /* default settings according to historic slirp */
     struct in_addr net  = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
@@ -242,8 +243,8 @@ static int net_slirp_init(NetClientState *peer, const char 
*model,
 
     s = DO_UPCAST(SlirpState, nc, nc);
 
-    s->slirp = slirp_init(restricted, net, mask, host, vhostname,
-                          tftp_export, bootfile, dhcp, dns, dnssearch, s);
+    s->slirp = slirp_init(restricted, net, mask, host, vhostname, tftp_export,
+                          bootfile, dhcp, dns, dnssearch, dhcp_vendopt, s);
     QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
 
     for (config = slirp_configs; config; config = config->next) {
@@ -754,7 +755,7 @@ int net_init_slirp(const NetClientOptions *opts, const char 
*name,
     ret = net_slirp_init(peer, "user", name, user->q_restrict, vnet,
                          user->host, user->hostname, user->tftp,
                          user->bootfile, user->dhcpstart, user->dns, user->smb,
-                         user->smbserver, dnssearch);
+                         user->smbserver, user->dhcpvendopt, dnssearch);
 
     while (slirp_configs) {
         config = slirp_configs;
diff --git a/qapi-schema.json b/qapi-schema.json
index 391356f..d86aac5 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3056,6 +3056,8 @@
 # @dhcpstart: #optional the first of the 16 IPs the built-in DHCP server can
 #             assign
 #
+# @dhcpvendopt: #optional vendor-specific DHCP options to pass to the guest
+#
 # @dns: #optional guest-visible address of the virtual nameserver
 #
 # @dnssearch: #optional list of DNS suffixes to search, passed as DHCP option
@@ -3082,6 +3084,7 @@
     '*tftp':      'str',
     '*bootfile':  'str',
     '*dhcpstart': 'str',
+    '*dhcpvendopt':'str',
     '*dns':       'str',
     '*dnssearch': ['String'],
     '*smb':       'str',
diff --git a/slirp/libslirp.h b/slirp/libslirp.h
index 5bdcbd5..2bce4de 100644
--- a/slirp/libslirp.h
+++ b/slirp/libslirp.h
@@ -13,7 +13,8 @@ Slirp *slirp_init(int restricted, struct in_addr vnetwork,
                   const char *vhostname, const char *tftp_path,
                   const char *bootfile, struct in_addr vdhcp_start,
                   struct in_addr vnameserver, const char **vdnssearch,
-                  void *opaque);
+                  const char *dhpc_vendopt_string, void *opaque);
+
 void slirp_cleanup(Slirp *slirp);
 
 void slirp_pollfds_fill(GArray *pollfds, uint32_t *timeout);
diff --git a/slirp/slirp.c b/slirp/slirp.c
index bad8dad..3dfce46 100644
--- a/slirp/slirp.c
+++ b/slirp/slirp.c
@@ -204,7 +204,7 @@ Slirp *slirp_init(int restricted, struct in_addr vnetwork,
                   const char *vhostname, const char *tftp_path,
                   const char *bootfile, struct in_addr vdhcp_start,
                   struct in_addr vnameserver, const char **vdnssearch,
-                  void *opaque)
+                  const char *dhpc_vendopt_string, void *opaque)
 {
     Slirp *slirp = g_malloc0(sizeof(Slirp));
 
-- 
1.8.4.5