From 0ab9cd9a4b3f3c464d63fd30e5f958bfdf690af3 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 25 Feb 2016 15:31:55 +0100 Subject: rocker: forbid to change world type Port to world assignment should be permitted only by qemu user. Driver should not be able to do it, so forbid that possibility. Signed-off-by: Jiri Pirko Signed-off-by: Jason Wang --- hw/net/rocker/rocker.c | 8 +++++++- hw/net/rocker/rocker_fp.c | 5 +++++ hw/net/rocker/rocker_fp.h | 1 + 3 files changed, 13 insertions(+), 1 deletion(-) (limited to 'hw') diff --git a/hw/net/rocker/rocker.c b/hw/net/rocker/rocker.c index f3e994d563..a1d921dc1c 100644 --- a/hw/net/rocker/rocker.c +++ b/hw/net/rocker/rocker.c @@ -400,7 +400,13 @@ static int cmd_set_port_settings(Rocker *r, if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]) { mode = rocker_tlv_get_u8(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]); - fp_port_set_world(fp_port, r->worlds[mode]); + if (mode >= ROCKER_WORLD_TYPE_MAX) { + return -ROCKER_EINVAL; + } + /* We don't support world change. */ + if (!fp_port_check_world(fp_port, r->worlds[mode])) { + return -ROCKER_EINVAL; + } } if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING]) { diff --git a/hw/net/rocker/rocker_fp.c b/hw/net/rocker/rocker_fp.c index af37fefc0a..0149899c62 100644 --- a/hw/net/rocker/rocker_fp.c +++ b/hw/net/rocker/rocker_fp.c @@ -186,6 +186,11 @@ void fp_port_set_world(FpPort *port, World *world) port->world = world; } +bool fp_port_check_world(FpPort *port, World *world) +{ + return port->world == world; +} + bool fp_port_enabled(FpPort *port) { return port->enabled; diff --git a/hw/net/rocker/rocker_fp.h b/hw/net/rocker/rocker_fp.h index ab80fd833c..04592bbfd2 100644 --- a/hw/net/rocker/rocker_fp.h +++ b/hw/net/rocker/rocker_fp.h @@ -40,6 +40,7 @@ int fp_port_set_settings(FpPort *port, uint32_t speed, bool fp_port_from_pport(uint32_t pport, uint32_t *port); World *fp_port_get_world(FpPort *port); void fp_port_set_world(FpPort *port, World *world); +bool fp_port_check_world(FpPort *port, World *world); bool fp_port_enabled(FpPort *port); void fp_port_enable(FpPort *port); void fp_port_disable(FpPort *port); -- cgit v1.2.3