netdev - [PATCH 6/8] tg3: Correct sw autoneg flow control advertisements

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <1198192903.0@teletran1>
Date:	Thu, 20 Dec 2007 15:21:43 -0800
From:	"Matt Carlson" <mcarlson@...adcom.com>
To:	davem@...emloft.net
cc:	netdev@...r.kernel.org, "Michael Chan" <mchan@...adcom.com>,
	andy@...yhouse.net
Subject: [PATCH 6/8] tg3: Correct sw autoneg flow control advertisements

This patch modifies the software autoneg code to use the administrator
specified flow control parameters.  Since the autonegotiation code uses
alternative flow control enumerations, the 1000-BaseX utility functions
are used and code was added to convert the definitions to and from the
alternate enumerations.

Signed-off-by: Matt Carlson <mcarlson@...adcom.com>
Signed-off-by: Michael Chan <mchan@...adcom.com>

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index e30a99f..373642c 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -1695,7 +1695,7 @@ static void tg3_setup_flow_control(struct tg3 *tp, u32 local_adv, u32 remote_adv
 	u32 old_tx_mode = tp->tx_mode;
 
 	if (tp->tg3_flags & TG3_FLAG_PAUSE_AUTONEG) {
-		if (tp->tg3_flags2 & (TG3_FLG2_MII_SERDES|TG3_FLG2_HW_AUTONEG))
+		if (tp->tg3_flags2 & TG3_FLG2_ANY_SERDES)
 			new_tg3_flags = tg3_resolve_flowctrl_1000X(local_adv,
 								   remote_adv);
 		else
@@ -2317,6 +2317,7 @@ struct tg3_fiber_aneginfo {
 static int tg3_fiber_aneg_smachine(struct tg3 *tp,
 				   struct tg3_fiber_aneginfo *ap)
 {
+	u16 flowctrl;
 	unsigned long delta;
 	u32 rx_cfg_reg;
 	int ret;
@@ -2416,7 +2417,12 @@ static int tg3_fiber_aneg_smachine(struct tg3 *tp,
 
 	case ANEG_STATE_ABILITY_DETECT_INIT:
 		ap->flags &= ~(MR_TOGGLE_TX);
-		ap->txconfig = (ANEG_CFG_FD | ANEG_CFG_PS1);
+		ap->txconfig = ANEG_CFG_FD;
+		flowctrl = tg3_advert_flowctrl_1000X(tp->link_config.flowctrl);
+		if (flowctrl & ADVERTISE_1000XPAUSE)
+			ap->txconfig |= ANEG_CFG_PS1;
+		if (flowctrl & ADVERTISE_1000XPSE_ASYM)
+			ap->txconfig |= ANEG_CFG_PS2;
 		tw32(MAC_TX_AUTO_NEG, ap->txconfig);
 		tp->mac_mode |= MAC_MODE_SEND_CONFIGS;
 		tw32_f(MAC_MODE, tp->mac_mode);
@@ -2562,7 +2568,7 @@ static int tg3_fiber_aneg_smachine(struct tg3 *tp,
 	return ret;
 }
 
-static int fiber_autoneg(struct tg3 *tp, u32 *flags)
+static int fiber_autoneg(struct tg3 *tp, u32 *txflags, u32 *rxflags)
 {
 	int res = 0;
 	struct tg3_fiber_aneginfo aninfo;
@@ -2596,7 +2602,8 @@ static int fiber_autoneg(struct tg3 *tp, u32 *flags)
 	tw32_f(MAC_MODE, tp->mac_mode);
 	udelay(40);
 
-	*flags = aninfo.flags;
+	*txflags = aninfo.txconfig;
+	*rxflags = aninfo.flags;
 
 	if (status == ANEG_DONE &&
 	    (aninfo.flags & (MR_AN_COMPLETE | MR_LINK_OK |
@@ -2806,18 +2813,21 @@ static int tg3_setup_fiber_by_hand(struct tg3 *tp, u32 mac_status)
 		goto out;
 
 	if (tp->link_config.autoneg == AUTONEG_ENABLE) {
-		u32 flags;
+		u32 txflags, rxflags;
 		int i;
 
-		if (fiber_autoneg(tp, &flags)) {
-			u32 local_adv, remote_adv;
+		if (fiber_autoneg(tp, &txflags, &rxflags)) {
+			u32 local_adv = 0, remote_adv = 0;
 
-			local_adv = ADVERTISE_PAUSE_CAP;
-			remote_adv = 0;
-			if (flags & MR_LP_ADV_SYM_PAUSE)
-				remote_adv |= LPA_PAUSE_CAP;
-			if (flags & MR_LP_ADV_ASYM_PAUSE)
-				remote_adv |= LPA_PAUSE_ASYM;
+			if (txflags & ANEG_CFG_PS1)
+				local_adv |= ADVERTISE_1000XPAUSE;
+			if (txflags & ANEG_CFG_PS2)
+				local_adv |= ADVERTISE_1000XPSE_ASYM;
+
+			if (rxflags & MR_LP_ADV_SYM_PAUSE)
+				remote_adv |= LPA_1000XPAUSE;
+			if (rxflags & MR_LP_ADV_ASYM_PAUSE)
+				remote_adv |= LPA_1000XPAUSE_ASYM;
 
 			tg3_setup_flow_control(tp, local_adv, remote_adv);
 
@@ -2841,6 +2851,8 @@ static int tg3_setup_fiber_by_hand(struct tg3 *tp, u32 mac_status)
 		    !(mac_status & MAC_STATUS_RCVD_CFG))
 			current_link_up = 1;
 	} else {
+		tg3_setup_flow_control(tp, 0, 0);
+
 		/* Forcing 1000FD link up. */
 		current_link_up = 1;
 


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html