[PATCH v3] octeontx2-af: Fix missing check bugs in rvu_cgx.c

From: Yingjie Wang <redacted>

In rvu_mbox_handler_cgx_mac_addr_get()
and rvu_mbox_handler_cgx_mac_addr_set(),
the msg is expected only from PFs that are mapped to CGX LMACs.
It should be checked before mapping,
so we add the is_cgx_config_permitted() in the functions.

Fixes: 96be2e0da85e ("octeontx2-af: Support for MAC address filters in CGX")
Signed-off-by: Yingjie Wang <redacted>
Reviewed-by: Geetha sowjanya<gakula@marvell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
index d298b9357177..6c6b411e78fd 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c

@@ -469,6 +469,9 @@ int rvu_mbox_handler_cgx_mac_addr_set(struct rvu *rvu,
 	int pf = rvu_get_pf(req->hdr.pcifunc);
 	u8 cgx_id, lmac_id;
 
+	if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc))
+		return -EPERM;
+
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 
 	cgx_lmac_addr_set(cgx_id, lmac_id, req->mac_addr);

@@ -485,6 +488,9 @@ int rvu_mbox_handler_cgx_mac_addr_get(struct rvu *rvu,
 	int rc = 0, i;
 	u64 cfg;
 
+	if (!is_cgx_config_permitted(rvu, req->hdr.pcifunc))
+		return -EPERM;
+
 	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
 
 	rsp->hdr.rc = rc;

-- 
2.7.4

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Fri, 15 Jan 2021 06:10:04 -0800 you wrote:

From: Yingjie Wang <redacted>

In rvu_mbox_handler_cgx_mac_addr_get()
and rvu_mbox_handler_cgx_mac_addr_set(),
the msg is expected only from PFs that are mapped to CGX LMACs.
It should be checked before mapping,
so we add the is_cgx_config_permitted() in the functions.

[...]

Here is the summary with links:
  - [v3] octeontx2-af: Fix missing check bugs in rvu_cgx.c
    https://git.kernel.org/netdev/net/c/b7ba6cfabc42

You are awesome, thank you!
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