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Date: Wed, 14 Jan 2009 18:43:09 +0200
From: "Eilon Greenstein" <eilong@...adcom.com>
To: "David Miller" <davem@...emloft.net>,
netdev <netdev@...r.kernel.org>
Subject: [PATCH 09/34]bnx2x: VLAN tagged packets without VLAN offload
Wrong handling of tagged packet if VLAN offload is disabled caused packets to
get corrupted
Signed-off-by: Eilon Greenstein <eilong@...adcom.com>
---
drivers/net/bnx2x.h | 12 +++++++-----
drivers/net/bnx2x_main.c | 42 +++++++++++++++++++++++++++++++++---------
2 files changed, 40 insertions(+), 14 deletions(-)
diff --git a/drivers/net/bnx2x.h b/drivers/net/bnx2x.h
index b9bc285..a6c9d23 100644
--- a/drivers/net/bnx2x.h
+++ b/drivers/net/bnx2x.h
@@ -20,6 +20,11 @@
* (you will need to reboot afterwards) */
/* #define BNX2X_STOP_ON_ERROR */
+#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
+#define BCM_VLAN 1
+#endif
+
+
/* error/debug prints */
#define DRV_MODULE_NAME "bnx2x"
@@ -78,11 +83,6 @@
#endif
-#ifdef NETIF_F_HW_VLAN_TX
-#define BCM_VLAN 1
-#endif
-
-
#define U64_LO(x) (u32)(((u64)(x)) & 0xffffffff)
#define U64_HI(x) (u32)(((u64)(x)) >> 32)
#define HILO_U64(hi, lo) ((((u64)(hi)) << 32) + (lo))
@@ -800,6 +800,8 @@ struct bnx2x {
#define TPA_ENABLE_FLAG 0x80
#define NO_MCP_FLAG 0x100
#define BP_NOMCP(bp) (bp->flags & NO_MCP_FLAG)
+#define HW_VLAN_TX_FLAG 0x400
+#define HW_VLAN_RX_FLAG 0x800
int func;
#define BP_PORT(bp) (bp->func % PORT_MAX)
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 4735f57..4993707 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -38,9 +38,7 @@
#include <linux/time.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
-#ifdef NETIF_F_HW_VLAN_TX
- #include <linux/if_vlan.h>
-#endif
+#include <linux/if_vlan.h>
#include <net/ip.h>
#include <net/tcp.h>
#include <net/checksum.h>
@@ -1299,6 +1297,13 @@ static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
if (likely(new_skb)) {
/* fix ip xsum and give it to the stack */
/* (no need to map the new skb) */
+#ifdef BCM_VLAN
+ int is_vlan_cqe =
+ (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) &
+ PARSING_FLAGS_VLAN);
+ int is_not_hwaccel_vlan_cqe =
+ (is_vlan_cqe && (!(bp->flags & HW_VLAN_RX_FLAG)));
+#endif
prefetch(skb);
prefetch(((char *)(skb)) + 128);
@@ -1323,6 +1328,12 @@ static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
struct iphdr *iph;
iph = (struct iphdr *)skb->data;
+#ifdef BCM_VLAN
+ /* If there is no Rx VLAN offloading -
+ take VLAN tag into an account */
+ if (unlikely(is_not_hwaccel_vlan_cqe))
+ iph = (struct iphdr *)((u8 *)iph + VLAN_HLEN);
+#endif
iph->check = 0;
iph->check = ip_fast_csum((u8 *)iph, iph->ihl);
}
@@ -1330,9 +1341,8 @@ static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
if (!bnx2x_fill_frag_skb(bp, fp, skb,
&cqe->fast_path_cqe, cqe_idx)) {
#ifdef BCM_VLAN
- if ((bp->vlgrp != NULL) &&
- (le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) &
- PARSING_FLAGS_VLAN))
+ if ((bp->vlgrp != NULL) && is_vlan_cqe &&
+ (!is_not_hwaccel_vlan_cqe))
vlan_hwaccel_receive_skb(skb, bp->vlgrp,
le16_to_cpu(cqe->fast_path_cqe.
vlan_tag));
@@ -1576,7 +1586,7 @@ reuse_rx:
}
#ifdef BCM_VLAN
- if ((bp->vlgrp != NULL) &&
+ if ((bp->vlgrp != NULL) && (bp->flags & HW_VLAN_RX_FLAG) &&
(le16_to_cpu(cqe->fast_path_cqe.pars_flags.flags) &
PARSING_FLAGS_VLAN))
vlan_hwaccel_receive_skb(skb, bp->vlgrp,
@@ -4554,7 +4564,7 @@ static void bnx2x_set_client_config(struct bnx2x *bp)
tstorm_client.config_flags =
TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE;
#ifdef BCM_VLAN
- if (bp->rx_mode && bp->vlgrp) {
+ if (bp->rx_mode && bp->vlgrp && (bp->flags & HW_VLAN_RX_FLAG)) {
tstorm_client.config_flags |=
TSTORM_ETH_CLIENT_CONFIG_VLAN_REMOVAL_ENABLE;
DP(NETIF_MSG_IFUP, "vlan removal enabled\n");
@@ -9587,11 +9597,14 @@ static int bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
"sending pkt %u @%p next_idx %u bd %u @%p\n",
pkt_prod, tx_buf, fp->tx_pkt_prod, bd_prod, tx_bd);
- if ((bp->vlgrp != NULL) && vlan_tx_tag_present(skb)) {
+#ifdef BCM_VLAN
+ if ((bp->vlgrp != NULL) && vlan_tx_tag_present(skb) &&
+ (bp->flags & HW_VLAN_TX_FLAG)) {
tx_bd->vlan = cpu_to_le16(vlan_tx_tag_get(skb));
tx_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_VLAN_TAG;
vlan_off += 4;
} else
+#endif
tx_bd->vlan = cpu_to_le16(pkt_prod);
if (xmit_type) {
@@ -10037,6 +10050,16 @@ static void bnx2x_vlan_rx_register(struct net_device *dev,
struct bnx2x *bp = netdev_priv(dev);
bp->vlgrp = vlgrp;
+
+ /* Set flags according to the required capabilities */
+ bp->flags &= ~(HW_VLAN_RX_FLAG | HW_VLAN_TX_FLAG);
+
+ if (dev->features & NETIF_F_HW_VLAN_TX)
+ bp->flags |= HW_VLAN_TX_FLAG;
+
+ if (dev->features & NETIF_F_HW_VLAN_RX)
+ bp->flags |= HW_VLAN_RX_FLAG;
+
if (netif_running(dev))
bnx2x_set_client_config(bp);
}
@@ -10193,6 +10216,7 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
dev->features |= NETIF_F_HIGHDMA;
#ifdef BCM_VLAN
dev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
+ bp->flags |= (HW_VLAN_RX_FLAG | HW_VLAN_TX_FLAG);
#endif
dev->features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
dev->features |= NETIF_F_TSO6;
--
1.5.4.3
--
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