slirp: add a fake NC-SI backend

NC-SI (Network Controller Sideband Interface) enables a BMC to manage
a set of NICs on a system. This model takes the simplest approach and
reverses the NC-SI packets to pretend a NIC is present and exercise
the Linux driver.

The NCSI header file <ncsi-pkt.h> comes from mainline Linux and was
untabified.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/slirp/slirp.c b/slirp/slirp.c
index 5a94b06f5e..9a50918346 100644
--- a/slirp/slirp.c
+++ b/slirp/slirp.c
@@ -870,6 +870,10 @@ void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len)
         }
         break;
 
+    case ETH_P_NCSI:
+        ncsi_input(slirp, pkt, pkt_len);
+        break;
+
     default:
         break;
     }