Commit 5d38c93e authored Sep 28, 2015 by Jingjing Wu Committed by Jeff Kirsher Oct 16, 2015

i40e: reset the invalid msg counter in vf when a valid msg is received



When the number of invalid messages from a VF is exceeded, the VF
will be disabled, due to the invalid messages.  This happens if
other VF drivers (like DPDK) send a message through the driver's
mailbox (aka virtchannel) interface, but the message is not
supported by the i40e pf driver, such as CONFIG_PROMISCUOUS_MODE.

This patch changes the num_invalid_msgs in struct i40e_vf to record
the continuous invalid msgs, and it will be reset when a valid msg
is received.

Change-ID: Iaec42fd3dcdd281476b3518be23261dd46fc3718
Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

parent ac26fc13

drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1102,6 +1102,8 @@ static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
		}
		} else {
		vf->num_valid_msgs++;
		/* reset the invalid counter, if a valid message is received. */
		vf->num_invalid_msgs = 0;
		}

		aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,

drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -96,7 +96,8 @@ struct i40e_vf {

		u8 num_queue_pairs; /* num of qps assigned to VF vsis */
		u64 num_mdd_events; /* num of mdd events detected */
		u64 num_invalid_msgs; /* num of malformed or invalid msgs detected */
		/* num of continuous malformed or invalid msgs detected */
		u64 num_invalid_msgs;
		u64 num_valid_msgs; /* num of valid msgs detected */

		unsigned long vf_caps; /* vf's adv. capabilities */