Hello Nithin,
> BOOLEAN validateDp; /* Does command require a valid DP argument. */
> } NETLINK_CMD, *PNETLINK_CMD;
Perhaps a better name would be validateDpIfIndex? Or, is there going to be
something more to be validated later on, when validateDp = TRUE?
> if (nlFamilyOps->cmds[i].validateDp == TRUE) {
> OvsAcquireCtrlLock();
> if (ovsMsg->ovsHdr.dp_ifindex ==
> (INT)gOvsSwitchContext->dpNo) {
> status = STATUS_INVALID_PARAMETER;
> OvsReleaseCtrlLock();
> goto done;
> }
> ...
I am not sure... shouldn't it have been:
"if (ovsMsg->ovsHdr.dp_ifindex != (INT)gOvsSwitchContext->dpNo)" ?
Also, is the dpIfIndex supposed to be given from kernel to userspace (such as,
in the DP NEW) or it will be a constant sent from userspace?
How is "dp_ifindex" going to be matched with gOvsSwitchContext->dpNo?
Thanks,
Sam
________________________________________
Date: Thu, 28 Aug 2014 10:59:11 -0700
From: Nithin Raju <nit...@vmware.com>
To: dev@openvswitch.org
Subject: [ovs-dev] [PATCH 2/4] datapath-windows: make NL version a
UIN8 and add a validateDp arg
Message-ID: <1409248753-12733-2-git-send-email-nit...@vmware.com>
I didn't realize earlier that version in a netlink message was a
UINT8. So, fixing that here.
Also, some of the commands don't pass a valid DP value. Hence adding
a field to identify such commands.
Signed-off-by: Nithin Raju <nit...@vmware.com>
---
datapath-windows/ovsext/Datapath.c | 74 +++++++++++++++++++-----------------
1 files changed, 39 insertions(+), 35 deletions(-)
diff --git a/datapath-windows/ovsext/Datapath.c
b/datapath-windows/ovsext/Datapath.c
index 40654f5..8438dd8 100644
--- a/datapath-windows/ovsext/Datapath.c
+++ b/datapath-windows/ovsext/Datapath.c
@@ -73,13 +73,15 @@ typedef struct _NETLINK_CMD {
UINT16 cmd;
NetlinkCmdHandler handler;
UINT32 supportedDevOp; /* Supported device operations. */
+ BOOLEAN validateDp; /* Does command require a valid DP argument. */
} NETLINK_CMD, *PNETLINK_CMD;
/* A netlink family is a group of commands. */
typedef struct _NETLINK_FAMILY {
CHAR *name;
UINT32 id;
- UINT16 version;
+ UINT8 version;
+ UINT8 pad;
UINT16 maxAttr;
NETLINK_CMD *cmds; /* Array of netlink commands and handlers. */
UINT16 opsCount;
@@ -109,16 +111,17 @@ static NTSTATUS OvsGetPidCmdHandler(PIRP irp,
PFILE_OBJECT fileObject,
/* Netlink control family: this is a Windows specific family. */
NETLINK_CMD nlControlFamilyCmdOps[] = {
- { OVS_CTRL_CMD_WIN_GET_PID, OvsGetPidCmdHandler, OVS_TRANSACTION_DEV_OP, }
+ { OVS_CTRL_CMD_WIN_GET_PID, OvsGetPidCmdHandler,
+ OVS_TRANSACTION_DEV_OP, FALSE }
};
NETLINK_FAMILY nlControlFamilyOps = {
- OVS_WIN_CONTROL_FAMILY,
- OVS_WIN_NL_CTRL_FAMILY_ID,
- OVS_WIN_CONTROL_VERSION,
- OVS_WIN_CONTROL_ATTR_MAX,
- nlControlFamilyCmdOps,
- ARRAY_SIZE(nlControlFamilyCmdOps)
+ .name = OVS_WIN_CONTROL_FAMILY,
+ .id = OVS_WIN_NL_CTRL_FAMILY_ID,
+ .version = OVS_WIN_CONTROL_VERSION,
+ .maxAttr = OVS_WIN_CONTROL_ATTR_MAX,
+ .cmds = nlControlFamilyCmdOps,
+ .opsCount = ARRAY_SIZE(nlControlFamilyCmdOps)
};
@@ -126,45 +129,45 @@ NETLINK_FAMILY nlControlFamilyOps = {
/* Netlink packet family. */
/* XXX: Add commands here. */
NETLINK_FAMILY nlPacketFamilyOps = {
- OVS_PACKET_FAMILY,
- OVS_WIN_NL_PACKET_FAMILY_ID,
- OVS_PACKET_VERSION,
- OVS_PACKET_ATTR_MAX,
- NULL, /* XXX: placeholder. */
- 0
+ .name = OVS_PACKET_FAMILY,
+ .id = OVS_WIN_NL_PACKET_FAMILY_ID,
+ .version = OVS_PACKET_VERSION,
+ .maxAttr = OVS_PACKET_ATTR_MAX,
+ .cmds = NULL, /* XXX: placeholder. */
+ .opsCount = 0
};
/* Netlink datapath family. */
/* XXX: Add commands here. */
NETLINK_FAMILY nlDatapathFamilyOps = {
- OVS_DATAPATH_FAMILY,
- OVS_WIN_NL_DATAPATH_FAMILY_ID,
- OVS_DATAPATH_VERSION,
- OVS_DP_ATTR_MAX,
- NULL, /* XXX: placeholder. */
- 0
+ .name = OVS_DATAPATH_FAMILY,
+ .id = OVS_WIN_NL_DATAPATH_FAMILY_ID,
+ .version = OVS_DATAPATH_VERSION,
+ .maxAttr = OVS_DP_ATTR_MAX,
+ .cmds = NULL, /* XXX: placeholder. */
+ .opsCount = 0
};
/* Netlink vport family. */
/* XXX: Add commands here. */
NETLINK_FAMILY nlVportFamilyOps = {
- OVS_VPORT_FAMILY,
- OVS_WIN_NL_VPORT_FAMILY_ID,
- OVS_VPORT_VERSION,
- OVS_VPORT_ATTR_MAX,
- NULL, /* XXX: placeholder. */
- 0
+ .name = OVS_VPORT_FAMILY,
+ .id = OVS_WIN_NL_VPORT_FAMILY_ID,
+ .version = OVS_VPORT_VERSION,
+ .maxAttr = OVS_VPORT_ATTR_MAX,
+ .cmds = NULL, /* XXX: placeholder. */
+ .opsCount = 0
};
/* Netlink flow family. */
/* XXX: Add commands here. */
NETLINK_FAMILY nlFLowFamilyOps = {
- OVS_FLOW_FAMILY,
- OVS_WIN_NL_FLOW_FAMILY_ID,
- OVS_FLOW_VERSION,
- OVS_FLOW_ATTR_MAX,
- NULL, /* XXX: placeholder. */
- 0
+ .name = OVS_FLOW_FAMILY,
+ .id = OVS_WIN_NL_FLOW_FAMILY_ID,
+ .version = OVS_FLOW_VERSION,
+ .maxAttr = OVS_FLOW_ATTR_MAX,
+ .cmds = NULL, /* XXX: placeholder. */
+ .opsCount = 0
};
static NTSTATUS
@@ -713,10 +716,11 @@ ValidateNetlinkCmd(UINT32 devOp,
goto done;
}
- /* Validate the DP for commands where the DP is actually set. */
- if (ovsMsg->genlMsg.cmd != OVS_CTRL_CMD_WIN_GET_PID) {
+ /* Validate the DP for commands that require a DP. */
+ if (nlFamilyOps->cmds[i].validateDp == TRUE) {
OvsAcquireCtrlLock();
- if (ovsMsg->ovsHdr.dp_ifindex == (INT)gOvsSwitchContext->dpNo)
{
+ if (ovsMsg->ovsHdr.dp_ifindex ==
+ (INT)gOvsSwitchContext->dpNo) {
status = STATUS_INVALID_PARAMETER;
OvsReleaseCtrlLock();
goto done;
--
1.7.4.1
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