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-rw-r--r--drivers/net/enic/cq_desc.h5
-rw-r--r--drivers/net/enic/enic.h2
-rw-r--r--drivers/net/enic/enic_main.c86
-rw-r--r--drivers/net/enic/enic_res.c7
-rw-r--r--drivers/net/enic/enic_res.h4
-rw-r--r--drivers/net/enic/vnic_dev.c70
-rw-r--r--drivers/net/enic/vnic_devcmd.h19
-rw-r--r--drivers/net/enic/vnic_intr.h2
-rw-r--r--drivers/net/enic/vnic_resource.h2
-rw-r--r--drivers/net/enic/vnic_rq.h9
-rw-r--r--drivers/net/enic/vnic_rss.h13
-rw-r--r--drivers/net/enic/vnic_wq.h9
12 files changed, 146 insertions, 82 deletions
diff --git a/drivers/net/enic/cq_desc.h b/drivers/net/enic/cq_desc.h
index c036a8bfd04..1eb289f773b 100644
--- a/drivers/net/enic/cq_desc.h
+++ b/drivers/net/enic/cq_desc.h
@@ -44,9 +44,10 @@ struct cq_desc {
u8 type_color;
};
-#define CQ_DESC_TYPE_BITS 7
+#define CQ_DESC_TYPE_BITS 4
#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1)
#define CQ_DESC_COLOR_MASK 1
+#define CQ_DESC_COLOR_SHIFT 7
#define CQ_DESC_Q_NUM_BITS 10
#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1)
#define CQ_DESC_COMP_NDX_BITS 12
@@ -58,7 +59,7 @@ static inline void cq_desc_dec(const struct cq_desc *desc_arg,
const struct cq_desc *desc = desc_arg;
const u8 type_color = desc->type_color;
- *color = (type_color >> CQ_DESC_TYPE_BITS) & CQ_DESC_COLOR_MASK;
+ *color = (type_color >> CQ_DESC_COLOR_SHIFT) & CQ_DESC_COLOR_MASK;
/*
* Make sure color bit is read from desc *before* other fields
diff --git a/drivers/net/enic/enic.h b/drivers/net/enic/enic.h
index 7f677e89a78..a832cc5d6a1 100644
--- a/drivers/net/enic/enic.h
+++ b/drivers/net/enic/enic.h
@@ -33,7 +33,7 @@
#define DRV_NAME "enic"
#define DRV_DESCRIPTION "Cisco 10G Ethernet Driver"
-#define DRV_VERSION "0.0.1-18163.472-k1"
+#define DRV_VERSION "1.0.0.648"
#define DRV_COPYRIGHT "Copyright 2008 Cisco Systems, Inc"
#define PFX DRV_NAME ": "
diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c
index 180e968dc54..d039e16f276 100644
--- a/drivers/net/enic/enic_main.c
+++ b/drivers/net/enic/enic_main.c
@@ -273,6 +273,8 @@ static struct ethtool_ops enic_ethtool_ops = {
.set_sg = ethtool_op_set_sg,
.get_tso = ethtool_op_get_tso,
.set_tso = enic_set_tso,
+ .get_flags = ethtool_op_get_flags,
+ .set_flags = ethtool_op_set_flags,
};
static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf)
@@ -409,8 +411,8 @@ static irqreturn_t enic_isr_legacy(int irq, void *data)
}
if (ENIC_TEST_INTR(pba, ENIC_INTX_WQ_RQ)) {
- if (netif_rx_schedule_prep(netdev, &enic->napi))
- __netif_rx_schedule(netdev, &enic->napi);
+ if (netif_rx_schedule_prep(&enic->napi))
+ __netif_rx_schedule(&enic->napi);
} else {
vnic_intr_unmask(&enic->intr[ENIC_INTX_WQ_RQ]);
}
@@ -438,7 +440,7 @@ static irqreturn_t enic_isr_msi(int irq, void *data)
* writes).
*/
- netif_rx_schedule(enic->netdev, &enic->napi);
+ netif_rx_schedule(&enic->napi);
return IRQ_HANDLED;
}
@@ -448,7 +450,7 @@ static irqreturn_t enic_isr_msix_rq(int irq, void *data)
struct enic *enic = data;
/* schedule NAPI polling for RQ cleanup */
- netif_rx_schedule(enic->netdev, &enic->napi);
+ netif_rx_schedule(&enic->napi);
return IRQ_HANDLED;
}
@@ -895,6 +897,7 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq,
int skipped, void *opaque)
{
struct enic *enic = vnic_dev_priv(rq->vdev);
+ struct net_device *netdev = enic->netdev;
struct sk_buff *skb;
u8 type, color, eop, sop, ingress_port, vlan_stripped;
@@ -929,7 +932,7 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq,
if (net_ratelimit())
printk(KERN_ERR PFX
"%s: packet error: bad FCS\n",
- enic->netdev->name);
+ netdev->name);
}
dev_kfree_skb_any(skb);
@@ -943,19 +946,18 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq,
*/
skb_put(skb, bytes_written);
- skb->protocol = eth_type_trans(skb, enic->netdev);
+ skb->protocol = eth_type_trans(skb, netdev);
if (enic->csum_rx_enabled && !csum_not_calc) {
skb->csum = htons(checksum);
skb->ip_summed = CHECKSUM_COMPLETE;
}
- skb->dev = enic->netdev;
- enic->netdev->last_rx = jiffies;
+ skb->dev = netdev;
if (enic->vlan_group && vlan_stripped) {
- if (ENIC_SETTING(enic, LRO) && ipv4)
+ if ((netdev->features & NETIF_F_LRO) && ipv4)
lro_vlan_hwaccel_receive_skb(&enic->lro_mgr,
skb, enic->vlan_group,
vlan, cq_desc);
@@ -965,7 +967,7 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq,
} else {
- if (ENIC_SETTING(enic, LRO) && ipv4)
+ if ((netdev->features & NETIF_F_LRO) && ipv4)
lro_receive_skb(&enic->lro_mgr, skb, cq_desc);
else
netif_receive_skb(skb);
@@ -1063,10 +1065,10 @@ static int enic_poll(struct napi_struct *napi, int budget)
/* If no work done, flush all LROs and exit polling
*/
- if (ENIC_SETTING(enic, LRO))
+ if (netdev->features & NETIF_F_LRO)
lro_flush_all(&enic->lro_mgr);
- netif_rx_complete(netdev, napi);
+ netif_rx_complete(napi);
vnic_intr_unmask(&enic->intr[ENIC_MSIX_RQ]);
}
@@ -1107,10 +1109,10 @@ static int enic_poll_msix(struct napi_struct *napi, int budget)
/* If no work done, flush all LROs and exit polling
*/
- if (ENIC_SETTING(enic, LRO))
+ if (netdev->features & NETIF_F_LRO)
lro_flush_all(&enic->lro_mgr);
- netif_rx_complete(netdev, napi);
+ netif_rx_complete(napi);
vnic_intr_unmask(&enic->intr[ENIC_MSIX_RQ]);
}
@@ -1591,6 +1593,23 @@ static void enic_iounmap(struct enic *enic)
iounmap(enic->bar0.vaddr);
}
+static const struct net_device_ops enic_netdev_ops = {
+ .ndo_open = enic_open,
+ .ndo_stop = enic_stop,
+ .ndo_start_xmit = enic_hard_start_xmit,
+ .ndo_get_stats = enic_get_stats,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_multicast_list = enic_set_multicast_list,
+ .ndo_change_mtu = enic_change_mtu,
+ .ndo_vlan_rx_register = enic_vlan_rx_register,
+ .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
+ .ndo_tx_timeout = enic_tx_timeout,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = enic_poll_controller,
+#endif
+};
+
static int __devinit enic_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
@@ -1746,13 +1765,13 @@ static int __devinit enic_probe(struct pci_dev *pdev,
}
/* Get available resource counts
- */
+ */
enic_get_res_counts(enic);
/* Set interrupt mode based on resource counts and system
* capabilities
- */
+ */
err = enic_set_intr_mode(enic);
if (err) {
@@ -1814,21 +1833,9 @@ static int __devinit enic_probe(struct pci_dev *pdev,
goto err_out_free_vnic_resources;
}
- netdev->open = enic_open;
- netdev->stop = enic_stop;
- netdev->hard_start_xmit = enic_hard_start_xmit;
- netdev->get_stats = enic_get_stats;
- netdev->set_multicast_list = enic_set_multicast_list;
- netdev->change_mtu = enic_change_mtu;
- netdev->vlan_rx_register = enic_vlan_rx_register;
- netdev->vlan_rx_add_vid = enic_vlan_rx_add_vid;
- netdev->vlan_rx_kill_vid = enic_vlan_rx_kill_vid;
- netdev->tx_timeout = enic_tx_timeout;
+ netdev->netdev_ops = &enic_netdev_ops;
netdev->watchdog_timeo = 2 * HZ;
netdev->ethtool_ops = &enic_ethtool_ops;
-#ifdef CONFIG_NET_POLL_CONTROLLER
- netdev->poll_controller = enic_poll_controller;
-#endif
switch (vnic_dev_get_intr_mode(enic->vdev)) {
default:
@@ -1845,22 +1852,23 @@ static int __devinit enic_probe(struct pci_dev *pdev,
if (ENIC_SETTING(enic, TSO))
netdev->features |= NETIF_F_TSO |
NETIF_F_TSO6 | NETIF_F_TSO_ECN;
+ if (ENIC_SETTING(enic, LRO))
+ netdev->features |= NETIF_F_LRO;
if (using_dac)
netdev->features |= NETIF_F_HIGHDMA;
enic->csum_rx_enabled = ENIC_SETTING(enic, RXCSUM);
- if (ENIC_SETTING(enic, LRO)) {
- enic->lro_mgr.max_aggr = ENIC_LRO_MAX_AGGR;
- enic->lro_mgr.max_desc = ENIC_LRO_MAX_DESC;
- enic->lro_mgr.lro_arr = enic->lro_desc;
- enic->lro_mgr.get_skb_header = enic_get_skb_header;
- enic->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
- enic->lro_mgr.dev = netdev;
- enic->lro_mgr.ip_summed = CHECKSUM_COMPLETE;
- enic->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
- }
+ enic->lro_mgr.max_aggr = ENIC_LRO_MAX_AGGR;
+ enic->lro_mgr.max_desc = ENIC_LRO_MAX_DESC;
+ enic->lro_mgr.lro_arr = enic->lro_desc;
+ enic->lro_mgr.get_skb_header = enic_get_skb_header;
+ enic->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
+ enic->lro_mgr.dev = netdev;
+ enic->lro_mgr.ip_summed = CHECKSUM_COMPLETE;
+ enic->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
+
err = register_netdev(netdev);
if (err) {
diff --git a/drivers/net/enic/enic_res.c b/drivers/net/enic/enic_res.c
index 95184b9108e..e5fc9384f8f 100644
--- a/drivers/net/enic/enic_res.c
+++ b/drivers/net/enic/enic_res.c
@@ -90,11 +90,8 @@ int enic_get_vnic_config(struct enic *enic)
c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
- printk(KERN_INFO PFX "vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x "
- "wq/rq %d/%d\n",
- enic->mac_addr[0], enic->mac_addr[1], enic->mac_addr[2],
- enic->mac_addr[3], enic->mac_addr[4], enic->mac_addr[5],
- c->wq_desc_count, c->rq_desc_count);
+ printk(KERN_INFO PFX "vNIC MAC addr %pM wq/rq %d/%d\n",
+ enic->mac_addr, c->wq_desc_count, c->rq_desc_count);
printk(KERN_INFO PFX "vNIC mtu %d csum tx/rx %d/%d tso/lro %d/%d "
"intr timer %d\n",
c->mtu, ENIC_SETTING(enic, TXCSUM),
diff --git a/drivers/net/enic/enic_res.h b/drivers/net/enic/enic_res.h
index 68534a29b7a..7bf272fa859 100644
--- a/drivers/net/enic/enic_res.h
+++ b/drivers/net/enic/enic_res.h
@@ -58,8 +58,6 @@ static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq,
(u16)vlan_tag,
0 /* loopback */);
- wmb();
-
vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop);
}
@@ -127,8 +125,6 @@ static inline void enic_queue_rq_desc(struct vnic_rq *rq,
(u64)dma_addr | VNIC_PADDR_TARGET,
type, (u16)len);
- wmb();
-
vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len);
}
diff --git a/drivers/net/enic/vnic_dev.c b/drivers/net/enic/vnic_dev.c
index 4d104f5c30f..11708579b6c 100644
--- a/drivers/net/enic/vnic_dev.c
+++ b/drivers/net/enic/vnic_dev.c
@@ -43,6 +43,7 @@ struct vnic_dev {
struct vnic_devcmd_notify *notify;
struct vnic_devcmd_notify notify_copy;
dma_addr_t notify_pa;
+ u32 notify_sz;
u32 *linkstatus;
dma_addr_t linkstatus_pa;
struct vnic_stats *stats;
@@ -235,14 +236,6 @@ int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
int delay;
u32 status;
- int dev_cmd_err[] = {
- /* convert from fw's version of error.h to host's version */
- 0, /* ERR_SUCCESS */
- EINVAL, /* ERR_EINVAL */
- EFAULT, /* ERR_EFAULT */
- EPERM, /* ERR_EPERM */
- EBUSY, /* ERR_EBUSY */
- };
int err;
status = ioread32(&devcmd->status);
@@ -270,10 +263,12 @@ int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
if (!(status & STAT_BUSY)) {
if (status & STAT_ERROR) {
- err = dev_cmd_err[(int)readq(&devcmd->args[0])];
- printk(KERN_ERR "Error %d devcmd %d\n",
- err, _CMD_N(cmd));
- return -err;
+ err = (int)readq(&devcmd->args[0]);
+ if (err != ERR_ECMDUNKNOWN ||
+ cmd != CMD_CAPABILITY)
+ printk(KERN_ERR "Error %d devcmd %d\n",
+ err, _CMD_N(cmd));
+ return err;
}
if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
@@ -290,6 +285,17 @@ int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
return -ETIMEDOUT;
}
+static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
+{
+ u64 a0 = (u32)cmd, a1 = 0;
+ int wait = 1000;
+ int err;
+
+ err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
+
+ return !(err || a0);
+}
+
int vnic_dev_fw_info(struct vnic_dev *vdev,
struct vnic_devcmd_fw_info **fw_info)
{
@@ -489,10 +495,7 @@ void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
if (err)
- printk(KERN_ERR
- "Can't add addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
- addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
- err);
+ printk(KERN_ERR "Can't add addr [%pM], %d\n", addr, err);
}
void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
@@ -507,16 +510,14 @@ void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
if (err)
- printk(KERN_ERR
- "Can't del addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
- addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
- err);
+ printk(KERN_ERR "Can't del addr [%pM], %d\n", addr, err);
}
int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
{
u64 a0, a1;
int wait = 1000;
+ int r;
if (!vdev->notify) {
vdev->notify = pci_alloc_consistent(vdev->pdev,
@@ -524,13 +525,16 @@ int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
&vdev->notify_pa);
if (!vdev->notify)
return -ENOMEM;
+ memset(vdev->notify, 0, sizeof(struct vnic_devcmd_notify));
}
a0 = vdev->notify_pa;
a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
a1 += sizeof(struct vnic_devcmd_notify);
- return vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
+ r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
+ vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
+ return r;
}
void vnic_dev_notify_unset(struct vnic_dev *vdev)
@@ -543,22 +547,22 @@ void vnic_dev_notify_unset(struct vnic_dev *vdev)
a1 += sizeof(struct vnic_devcmd_notify);
vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
+ vdev->notify_sz = 0;
}
static int vnic_dev_notify_ready(struct vnic_dev *vdev)
{
u32 *words;
- unsigned int nwords = sizeof(struct vnic_devcmd_notify) / 4;
+ unsigned int nwords = vdev->notify_sz / 4;
unsigned int i;
u32 csum;
- if (!vdev->notify)
+ if (!vdev->notify || !vdev->notify_sz)
return 0;
do {
csum = 0;
- memcpy(&vdev->notify_copy, vdev->notify,
- sizeof(struct vnic_devcmd_notify));
+ memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
words = (u32 *)&vdev->notify_copy;
for (i = 1; i < nwords; i++)
csum += words[i];
@@ -571,7 +575,20 @@ int vnic_dev_init(struct vnic_dev *vdev, int arg)
{
u64 a0 = (u32)arg, a1 = 0;
int wait = 1000;
- return vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
+ int r = 0;
+
+ if (vnic_dev_capable(vdev, CMD_INIT))
+ r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
+ else {
+ vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
+ if (a0 & CMD_INITF_DEFAULT_MAC) {
+ // Emulate these for old CMD_INIT_v1 which
+ // didn't pass a0 so no CMD_INITF_*.
+ vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
+ vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
+ }
+ }
+ return r;
}
int vnic_dev_link_status(struct vnic_dev *vdev)
@@ -672,3 +689,4 @@ err_out:
return NULL;
}
+
diff --git a/drivers/net/enic/vnic_devcmd.h b/drivers/net/enic/vnic_devcmd.h
index d8617a3373b..8062c75154e 100644
--- a/drivers/net/enic/vnic_devcmd.h
+++ b/drivers/net/enic/vnic_devcmd.h
@@ -168,7 +168,8 @@ enum vnic_devcmd_cmd {
CMD_CLOSE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25),
/* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
- CMD_INIT = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
+/***** Replaced by CMD_INIT *****/
+ CMD_INIT_v1 = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
/* variant of CMD_INIT, with provisioning info
* (u64)a0=paddr of vnic_devcmd_provinfo
@@ -198,6 +199,14 @@ enum vnic_devcmd_cmd {
/* undo initialize of virtual link */
CMD_DEINIT = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34),
+
+ /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
+ CMD_INIT = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 35),
+
+ /* check fw capability of a cmd:
+ * in: (u32)a0=cmd
+ * out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */
+ CMD_CAPABILITY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 36),
};
/* flags for CMD_OPEN */
@@ -249,8 +258,16 @@ struct vnic_devcmd_notify {
u32 uif; /* uplink interface */
u32 status; /* status bits (see VNIC_STF_*) */
u32 error; /* error code (see ERR_*) for first ERR */
+ u32 link_down_cnt; /* running count of link down transitions */
};
#define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */
+#define VNIC_STF_STD_PAUSE 0x0002 /* standard link-level pause on */
+#define VNIC_STF_PFC_PAUSE 0x0004 /* priority flow control pause on */
+/* all supported status flags */
+#define VNIC_STF_ALL (VNIC_STF_FATAL_ERR |\
+ VNIC_STF_STD_PAUSE |\
+ VNIC_STF_PFC_PAUSE |\
+ 0)
struct vnic_devcmd_provinfo {
u8 oui[3];
diff --git a/drivers/net/enic/vnic_intr.h b/drivers/net/enic/vnic_intr.h
index ccc408116af..ce633a5a7e3 100644
--- a/drivers/net/enic/vnic_intr.h
+++ b/drivers/net/enic/vnic_intr.h
@@ -78,7 +78,7 @@ static inline void vnic_intr_return_credits(struct vnic_intr *intr,
static inline u32 vnic_intr_legacy_pba(u32 __iomem *legacy_pba)
{
- /* get and ack interrupt in one read (clear-and-ack-on-read) */
+ /* read PBA without clearing */
return ioread32(legacy_pba);
}
diff --git a/drivers/net/enic/vnic_resource.h b/drivers/net/enic/vnic_resource.h
index 144d2812f08..b61c22aec41 100644
--- a/drivers/net/enic/vnic_resource.h
+++ b/drivers/net/enic/vnic_resource.h
@@ -38,7 +38,7 @@ enum vnic_res_type {
RES_TYPE_INTR_CTRL, /* Interrupt ctrl table */
RES_TYPE_INTR_TABLE, /* MSI/MSI-X Interrupt table */
RES_TYPE_INTR_PBA, /* MSI/MSI-X PBA table */
- RES_TYPE_INTR_PBA_LEGACY, /* Legacy intr status, r2c */
+ RES_TYPE_INTR_PBA_LEGACY, /* Legacy intr status */
RES_TYPE_RSVD6,
RES_TYPE_RSVD7,
RES_TYPE_DEVCMD, /* Device command region */
diff --git a/drivers/net/enic/vnic_rq.h b/drivers/net/enic/vnic_rq.h
index 82bfca67cc4..fd0ef66d2e9 100644
--- a/drivers/net/enic/vnic_rq.h
+++ b/drivers/net/enic/vnic_rq.h
@@ -132,8 +132,15 @@ static inline void vnic_rq_post(struct vnic_rq *rq,
#define VNIC_RQ_RETURN_RATE 0xf /* keep 2^n - 1 */
#endif
- if ((buf->index & VNIC_RQ_RETURN_RATE) == 0)
+ if ((buf->index & VNIC_RQ_RETURN_RATE) == 0) {
+ /* Adding write memory barrier prevents compiler and/or CPU
+ * reordering, thus avoiding descriptor posting before
+ * descriptor is initialized. Otherwise, hardware can read
+ * stale descriptor fields.
+ */
+ wmb();
iowrite32(buf->index, &rq->ctrl->posted_index);
+ }
}
static inline void vnic_rq_return_descs(struct vnic_rq *rq, unsigned int count)
diff --git a/drivers/net/enic/vnic_rss.h b/drivers/net/enic/vnic_rss.h
index e325d65d7c3..5fbb3c923bc 100644
--- a/drivers/net/enic/vnic_rss.h
+++ b/drivers/net/enic/vnic_rss.h
@@ -1,6 +1,19 @@
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
*/
#ifndef _VNIC_RSS_H_
diff --git a/drivers/net/enic/vnic_wq.h b/drivers/net/enic/vnic_wq.h
index 7081828d8a4..c826137dc65 100644
--- a/drivers/net/enic/vnic_wq.h
+++ b/drivers/net/enic/vnic_wq.h
@@ -108,8 +108,15 @@ static inline void vnic_wq_post(struct vnic_wq *wq,
buf->len = len;
buf = buf->next;
- if (eop)
+ if (eop) {
+ /* Adding write memory barrier prevents compiler and/or CPU
+ * reordering, thus avoiding descriptor posting before
+ * descriptor is initialized. Otherwise, hardware can read
+ * stale descriptor fields.
+ */
+ wmb();
iowrite32(buf->index, &wq->ctrl->posted_index);
+ }
wq->to_use = buf;
wq->ring.desc_avail--;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 15:04:18 +0000