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dpif-netdev: Fix validation of VLAN PCP value in userspace datapath.

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Reported-by: Jean Tourrilhes <jt@hpl.hp.com>
This commit is contained in:
Ben Pfaff
2010-02-11 13:51:56 -08:00
parent da0603cf27
commit 33ce24ed46
2 changed files with 4 additions and 1 deletions
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2
lib/dpif-netdev.c
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@@ -752,7 +752,7 @@ dpif_netdev_validate_actions(const union odp_action *actions, int n_actions,
case ODPAT_SET_VLAN_PCP:
*mutates = true;
if (a->vlan_pcp.vlan_pcp & ~VLAN_PCP_MASK) {
if (a->vlan_pcp.vlan_pcp & ~(VLAN_PCP_MASK >> VLAN_PCP_SHIFT)) {
return EINVAL;
}
break;

3
lib/packets.h
View File

@@ -179,7 +179,10 @@ struct llc_snap_header {
BUILD_ASSERT_DECL(LLC_SNAP_HEADER_LEN == sizeof(struct llc_snap_header));
#define VLAN_VID_MASK 0x0fff
#define VLAN_VID_SHIFT 0
#define VLAN_PCP_MASK 0xe000
#define VLAN_PCP_SHIFT 13
#define VLAN_HEADER_LEN 4
struct vlan_header {