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Commit 286ef9d6 authored by Michael Chan's avatar Michael Chan Committed by David S. Miller
Browse files

bnxt_en: Enhance autoneg support. 



On some dual port NICs, the speed setting on one port can affect the
available speed on the other port.  Add logic to detect these changes
and adjust the advertised speed settings when necessary.

Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 16d663a6

drivers/net/ethernet/broadcom/bnxt/bnxt.c

+23 −0
Original line number Diff line number Diff line
@@ -1499,6 +1499,7 @@ static int bnxt_async_event_process(struct bnxt *bp, 
			netdev_warn(bp->dev, "Link speed %d no longer supported\n",

				    speed);

		}

		set_bit(BNXT_LINK_SPEED_CHNG_SP_EVENT, &bp->sp_event);

		/* fall thru */

	}

	case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE:
@@ -5095,6 +5096,7 @@ static int bnxt_update_link(struct bnxt *bp, bool chng_link_state) 
	struct hwrm_port_phy_qcfg_input req = {0};

	struct hwrm_port_phy_qcfg_output *resp = bp->hwrm_cmd_resp_addr;

	u8 link_up = link_info->link_up;

	u16 diff;



	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_PHY_QCFG, -1, -1);
@@ -5182,6 +5184,23 @@ static int bnxt_update_link(struct bnxt *bp, bool chng_link_state) 
		link_info->link_up = 0;

	}

	mutex_unlock(&bp->hwrm_cmd_lock);



	diff = link_info->support_auto_speeds ^ link_info->advertising;

	if ((link_info->support_auto_speeds | diff) !=

	    link_info->support_auto_speeds) {

		/* An advertised speed is no longer supported, so we need to

		 * update the advertisement settings.  See bnxt_reset() for

		 * comments about the rtnl_lock() sequence below.

		 */

		clear_bit(BNXT_STATE_IN_SP_TASK, &bp->state);

		rtnl_lock();

		link_info->advertising = link_info->support_auto_speeds;

		if (test_bit(BNXT_STATE_OPEN, &bp->state) &&

		    (link_info->autoneg & BNXT_AUTONEG_SPEED))

			bnxt_hwrm_set_link_setting(bp, true, false);

		set_bit(BNXT_STATE_IN_SP_TASK, &bp->state);

		rtnl_unlock();

	}

	return 0;

}
@@ -6108,6 +6127,10 @@ static void bnxt_sp_task(struct work_struct *work) 
	if (test_and_clear_bit(BNXT_RX_NTP_FLTR_SP_EVENT, &bp->sp_event))

		bnxt_cfg_ntp_filters(bp);

	if (test_and_clear_bit(BNXT_LINK_CHNG_SP_EVENT, &bp->sp_event)) {

		if (test_and_clear_bit(BNXT_LINK_SPEED_CHNG_SP_EVENT,

				       &bp->sp_event))

			bnxt_hwrm_phy_qcaps(bp);



		rc = bnxt_update_link(bp, true);

		if (rc)

			netdev_err(bp->dev, "SP task can't update link (rc: %x)\n",

drivers/net/ethernet/broadcom/bnxt/bnxt.h

+1 −0
Original line number Diff line number Diff line
@@ -1089,6 +1089,7 @@ struct bnxt { 
#define BNXT_RESET_TASK_SILENT_SP_EVENT	11

#define BNXT_GENEVE_ADD_PORT_SP_EVENT	12

#define BNXT_GENEVE_DEL_PORT_SP_EVENT	13

#define BNXT_LINK_SPEED_CHNG_SP_EVENT	14



	struct bnxt_pf_info	pf;

#ifdef CONFIG_BNXT_SRIOV