According to the documentation (man ip-link), the minimum TXRATE should
be always <= Maximum TXRATE, but commit f89a2a05ffa9 ("Add support to
configure SR-IOV VF minimum and maximum Tx rate through ip tool") didn't
enforce it.

Fixes: f89a2a05ffa9 ("Add support to configure SR-IOV VF minimum and maximum Tx 
rate through ip tool")
Cc: Sucheta Chakraborty <sucheta.chakrabo...@qlogic.com>
Signed-off-by: Gal Pressman <g...@mellanox.com>
Reviewed-by: Eran Ben Elisha <era...@mellanox.com>
Reviewed-by: Leon Romanovsky <leo...@mellanox.com>
---
 ip/iplink.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ip/iplink.c b/ip/iplink.c
index 4c96711..22c9a29 100644
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -539,6 +539,14 @@ static int iplink_parse_vf(int vf, int *argcp, char 
***argvp,
                        if (tivt.max_tx_rate == -1)
                                tivt.max_tx_rate = tmax;
                }
+
+               if (tivt.max_tx_rate && tivt.min_tx_rate > tivt.max_tx_rate) {
+                       fprintf(stderr,
+                               "Invalid min_tx_rate %d - must be <= 
max_tx_rate %d\n",
+                               tivt.min_tx_rate, tivt.max_tx_rate);
+                       return -1;
+               }
+
                addattr_l(&req->n, sizeof(*req), IFLA_VF_RATE, &tivt,
                          sizeof(tivt));
        }
-- 
2.7.4

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