Skip to content

L
linux
Commit c70001a9 authored by Sony Chacko's avatar Sony Chacko Committed by David S. Miller
Browse files
Options

qlcnic: create file qlcnic_io.c for datapath routines 

Physical refactoring of 82xx adapter data path routines.

Move data path code to new file qlcnic_io.c
Existing data path code has coding stye issues, the code is
moved to the new file without fixing the style issues.

There is a seperate patch to fix the style issues in qlcnic_io.c
Signed-off-by: default avatarSony Chacko <sony.chacko@qlogic.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3a858a86
Show whitespace changes
Inline Side-by-side
Showing with 1373 additions and 1376 deletions
drivers/net/ethernet/qlogic/qlcnic/Makefile
View file @ c70001a9
...@@ -5,4 +5,4 @@ ...@@ -5,4 +5,4 @@
obj-$(CONFIG_QLCNIC) := qlcnic.o obj-$(CONFIG_QLCNIC) := qlcnic.o
qlcnic-y := qlcnic_hw.o qlcnic_main.o qlcnic_init.o \ qlcnic-y := qlcnic_hw.o qlcnic_main.o qlcnic_init.o \
qlcnic_ethtool.o qlcnic_ctx.o qlcnic_ethtool.o qlcnic_ctx.o qlcnic_io.o
drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
View file @ c70001a9
...@@ -89,16 +89,6 @@ ...@@ -89,16 +89,6 @@
#define QLCNIC_CT_DEFAULT_RX_BUF_LEN 2048 #define QLCNIC_CT_DEFAULT_RX_BUF_LEN 2048
#define QLCNIC_LRO_BUFFER_EXTRA 2048 #define QLCNIC_LRO_BUFFER_EXTRA 2048
/* Opcodes to be used with the commands */
#define TX_ETHER_PKT 0x01
#define TX_TCP_PKT 0x02
#define TX_UDP_PKT 0x03
#define TX_IP_PKT 0x04
#define TX_TCP_LSO 0x05
#define TX_TCP_LSO6 0x06
#define TX_TCPV6_PKT 0x0b
#define TX_UDPV6_PKT 0x0c
/* Tx defines */ /* Tx defines */
#define QLCNIC_MAX_FRAGS_PER_TX 14 #define QLCNIC_MAX_FRAGS_PER_TX 14
#define MAX_TSO_HEADER_DESC 2 #define MAX_TSO_HEADER_DESC 2
...@@ -147,28 +137,6 @@ ...@@ -147,28 +137,6 @@
* Added fileds of tcpHdrSize and ipHdrSize, The driver needs to do it only when * Added fileds of tcpHdrSize and ipHdrSize, The driver needs to do it only when
* we are doing LSO (above the 1500 size packet) only. * we are doing LSO (above the 1500 size packet) only.
*/ */
#define FLAGS_VLAN_TAGGED 0x10
#define FLAGS_VLAN_OOB 0x40
#define qlcnic_set_tx_vlan_tci(cmd_desc, v) \
(cmd_desc)->vlan_TCI = cpu_to_le16(v);
#define qlcnic_set_cmd_desc_port(cmd_desc, var) \
((cmd_desc)->port_ctxid |= ((var) & 0x0F))
#define qlcnic_set_cmd_desc_ctxid(cmd_desc, var) \
((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0))
#define qlcnic_set_tx_port(_desc, _port) \
((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0))
#define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \
((_desc)->flags_opcode |= \
cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7)))
#define qlcnic_set_tx_frags_len(_desc, _frags, _len) \
((_desc)->nfrags__length = \
cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8)))
struct cmd_desc_type0 { struct cmd_desc_type0 {
u8 tcp_hdr_offset; /* For LSO only */ u8 tcp_hdr_offset; /* For LSO only */
u8 ip_hdr_offset; /* For LSO only */ u8 ip_hdr_offset; /* For LSO only */
...@@ -203,65 +171,6 @@ struct rcv_desc { ...@@ -203,65 +171,6 @@ struct rcv_desc {
__le64 addr_buffer; __le64 addr_buffer;
} __packed; } __packed;
/* opcode field in status_desc */
#define QLCNIC_SYN_OFFLOAD 0x03
#define QLCNIC_RXPKT_DESC 0x04
#define QLCNIC_OLD_RXPKT_DESC 0x3f
#define QLCNIC_RESPONSE_DESC 0x05
#define QLCNIC_LRO_DESC 0x12
/* for status field in status_desc */
#define STATUS_CKSUM_LOOP 0
#define STATUS_CKSUM_OK 2
/* owner bits of status_desc */
#define STATUS_OWNER_HOST (0x1ULL << 56)
#define STATUS_OWNER_PHANTOM (0x2ULL << 56)
/* Status descriptor:
0-3 port, 4-7 status, 8-11 type, 12-27 total_length
28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset
53-55 desc_cnt, 56-57 owner, 58-63 opcode
*/
#define qlcnic_get_sts_port(sts_data) \
((sts_data) & 0x0F)
#define qlcnic_get_sts_status(sts_data) \
(((sts_data) >> 4) & 0x0F)
#define qlcnic_get_sts_type(sts_data) \
(((sts_data) >> 8) & 0x0F)
#define qlcnic_get_sts_totallength(sts_data) \
(((sts_data) >> 12) & 0xFFFF)
#define qlcnic_get_sts_refhandle(sts_data) \
(((sts_data) >> 28) & 0xFFFF)
#define qlcnic_get_sts_prot(sts_data) \
(((sts_data) >> 44) & 0x0F)
#define qlcnic_get_sts_pkt_offset(sts_data) \
(((sts_data) >> 48) & 0x1F)
#define qlcnic_get_sts_desc_cnt(sts_data) \
(((sts_data) >> 53) & 0x7)
#define qlcnic_get_sts_opcode(sts_data) \
(((sts_data) >> 58) & 0x03F)
#define qlcnic_get_lro_sts_refhandle(sts_data) \
((sts_data) & 0x0FFFF)
#define qlcnic_get_lro_sts_length(sts_data) \
(((sts_data) >> 16) & 0x0FFFF)
#define qlcnic_get_lro_sts_l2_hdr_offset(sts_data) \
(((sts_data) >> 32) & 0x0FF)
#define qlcnic_get_lro_sts_l4_hdr_offset(sts_data) \
(((sts_data) >> 40) & 0x0FF)
#define qlcnic_get_lro_sts_timestamp(sts_data) \
(((sts_data) >> 48) & 0x1)
#define qlcnic_get_lro_sts_type(sts_data) \
(((sts_data) >> 49) & 0x7)
#define qlcnic_get_lro_sts_push_flag(sts_data) \
(((sts_data) >> 52) & 0x1)
#define qlcnic_get_lro_sts_seq_number(sts_data) \
((sts_data) & 0x0FFFFFFFF)
#define qlcnic_get_lro_sts_mss(sts_data1) \
((sts_data1 >> 32) & 0x0FFFF)
struct status_desc { struct status_desc {
__le64 status_desc_data[2]; __le64 status_desc_data[2];
} __attribute__ ((aligned(16))); } __attribute__ ((aligned(16)));
...@@ -1648,6 +1557,15 @@ int qlcnic_clear_esw_stats(struct qlcnic_adapter *adapter, u8, u8, u8); ...@@ -1648,6 +1557,15 @@ int qlcnic_clear_esw_stats(struct qlcnic_adapter *adapter, u8, u8, u8);
int qlcnic_get_mac_stats(struct qlcnic_adapter *, struct qlcnic_mac_statistics *); int qlcnic_get_mac_stats(struct qlcnic_adapter *, struct qlcnic_mac_statistics *);
extern int qlcnic_config_tso; extern int qlcnic_config_tso;
int qlcnic_napi_add(struct qlcnic_adapter *, struct net_device *);
void qlcnic_napi_del(struct qlcnic_adapter *adapter);
void qlcnic_napi_enable(struct qlcnic_adapter *adapter);
void qlcnic_napi_disable(struct qlcnic_adapter *adapter);
int qlcnic_alloc_sds_rings(struct qlcnic_recv_context *, int);
void qlcnic_free_sds_rings(struct qlcnic_recv_context *);
void qlcnic_free_tx_rings(struct qlcnic_adapter *);
int qlcnic_alloc_tx_rings(struct qlcnic_adapter *, struct net_device *);
/* /*
* QLOGIC Board information * QLOGIC Board information
*/ */
...@@ -1694,6 +1612,21 @@ static inline u32 qlcnic_tx_avail(struct qlcnic_host_tx_ring *tx_ring) ...@@ -1694,6 +1612,21 @@ static inline u32 qlcnic_tx_avail(struct qlcnic_host_tx_ring *tx_ring)
tx_ring->producer; tx_ring->producer;
} }
static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring)
{
writel(0, sds_ring->crb_intr_mask);
}
static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring)
{
struct qlcnic_adapter *adapter = sds_ring->adapter;
writel(0x1, sds_ring->crb_intr_mask);
if (!QLCNIC_IS_MSI_FAMILY(adapter))
writel(0xfbff, adapter->tgt_mask_reg);
}
extern const struct ethtool_ops qlcnic_ethtool_ops; extern const struct ethtool_ops qlcnic_ethtool_ops;
extern const struct ethtool_ops qlcnic_ethtool_failed_ops; extern const struct ethtool_ops qlcnic_ethtool_failed_ops;
......
drivers/net/ethernet/qlogic/qlcnic/qlcnic_init.c
View file @ c70001a9
...@@ -25,10 +25,6 @@ static unsigned int crb_addr_xform[QLCNIC_MAX_CRB_XFORM]; ...@@ -25,10 +25,6 @@ static unsigned int crb_addr_xform[QLCNIC_MAX_CRB_XFORM];
#define QLCNIC_ADDR_ERROR (0xffffffff) #define QLCNIC_ADDR_ERROR (0xffffffff)
static void
qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring);
static int static int
qlcnic_check_fw_hearbeat(struct qlcnic_adapter *adapter); qlcnic_check_fw_hearbeat(struct qlcnic_adapter *adapter);
...@@ -1332,629 +1328,3 @@ qlcnic_release_firmware(struct qlcnic_adapter *adapter) ...@@ -1332,629 +1328,3 @@ qlcnic_release_firmware(struct qlcnic_adapter *adapter)
release_firmware(adapter->fw); release_firmware(adapter->fw);
adapter->fw = NULL; adapter->fw = NULL;
} }
static void
qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
struct qlcnic_fw_msg *msg)
{
u32 cable_OUI;
u16 cable_len;
u16 link_speed;
u8 link_status, module, duplex, autoneg;
u8 lb_status = 0;
struct net_device *netdev = adapter->netdev;
adapter->has_link_events = 1;
cable_OUI = msg->body[1] & 0xffffffff;
cable_len = (msg->body[1] >> 32) & 0xffff;
link_speed = (msg->body[1] >> 48) & 0xffff;
link_status = msg->body[2] & 0xff;
duplex = (msg->body[2] >> 16) & 0xff;
autoneg = (msg->body[2] >> 24) & 0xff;
lb_status = (msg->body[2] >> 32) & 0x3;
module = (msg->body[2] >> 8) & 0xff;
if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
"length %d\n", cable_OUI, cable_len);
else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
dev_info(&netdev->dev, "unsupported cable length %d\n",
cable_len);
if (!link_status && (lb_status == QLCNIC_ILB_MODE ||
lb_status == QLCNIC_ELB_MODE))
adapter->ahw->loopback_state |= QLCNIC_LINKEVENT;
qlcnic_advert_link_change(adapter, link_status);
if (duplex == LINKEVENT_FULL_DUPLEX)
adapter->link_duplex = DUPLEX_FULL;
else
adapter->link_duplex = DUPLEX_HALF;
adapter->module_type = module;
adapter->link_autoneg = autoneg;
if (link_status) {
adapter->link_speed = link_speed;
} else {
adapter->link_speed = SPEED_UNKNOWN;
adapter->link_duplex = DUPLEX_UNKNOWN;
}
}
static void
qlcnic_handle_fw_message(int desc_cnt, int index,
struct qlcnic_host_sds_ring *sds_ring)
{
struct qlcnic_fw_msg msg;
struct status_desc *desc;
struct qlcnic_adapter *adapter;
struct device *dev;
int i = 0, opcode, ret;
while (desc_cnt > 0 && i < 8) {
desc = &sds_ring->desc_head[index];
msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
index = get_next_index(index, sds_ring->num_desc);
desc_cnt--;
}
adapter = sds_ring->adapter;
dev = &adapter->pdev->dev;
opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
switch (opcode) {
case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
qlcnic_handle_linkevent(adapter, &msg);
break;
case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK:
ret = (u32)(msg.body[1]);
switch (ret) {
case 0:
adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE;
break;
case 1:
dev_info(dev, "loopback already in progress\n");
adapter->diag_cnt = -QLCNIC_TEST_IN_PROGRESS;
break;
case 2:
dev_info(dev, "loopback cable is not connected\n");
adapter->diag_cnt = -QLCNIC_LB_CABLE_NOT_CONN;
break;
default:
dev_info(dev, "loopback configure request failed,"
" ret %x\n", ret);
adapter->diag_cnt = -QLCNIC_UNDEFINED_ERROR;
break;
}
break;
default:
break;
}
}
static int
qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring,
struct qlcnic_rx_buffer *buffer)
{
struct sk_buff *skb;
dma_addr_t dma;
struct pci_dev *pdev = adapter->pdev;
skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
if (!skb) {
adapter->stats.skb_alloc_failure++;
return -ENOMEM;
}
skb_reserve(skb, NET_IP_ALIGN);
dma = pci_map_single(pdev, skb->data,
rds_ring->dma_size, PCI_DMA_FROMDEVICE);
if (pci_dma_mapping_error(pdev, dma)) {
adapter->stats.rx_dma_map_error++;
dev_kfree_skb_any(skb);
return -ENOMEM;
}
buffer->skb = skb;
buffer->dma = dma;
return 0;
}
static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
{
struct qlcnic_rx_buffer *buffer;
struct sk_buff *skb;
buffer = &rds_ring->rx_buf_arr[index];
if (unlikely(buffer->skb == NULL)) {
WARN_ON(1);
return NULL;
}
pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
PCI_DMA_FROMDEVICE);
skb = buffer->skb;
if (likely((adapter->netdev->features & NETIF_F_RXCSUM) &&
(cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) {
adapter->stats.csummed++;
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else {
skb_checksum_none_assert(skb);
}
buffer->skb = NULL;
return skb;
}
static inline int
qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, struct sk_buff *skb,
u16 *vlan_tag)
{
struct ethhdr *eth_hdr;
if (!__vlan_get_tag(skb, vlan_tag)) {
eth_hdr = (struct ethhdr *) skb->data;
memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2);
skb_pull(skb, VLAN_HLEN);
}
if (!adapter->pvid)
return 0;
if (*vlan_tag == adapter->pvid) {
/* Outer vlan tag. Packet should follow non-vlan path */
*vlan_tag = 0xffff;
return 0;
}
if (adapter->flags & QLCNIC_TAGGING_ENABLED)
return 0;
return -EINVAL;
}
static struct qlcnic_rx_buffer *
qlcnic_process_rcv(struct qlcnic_adapter *adapter,
struct qlcnic_host_sds_ring *sds_ring,
int ring, u64 sts_data0)
{
struct net_device *netdev = adapter->netdev;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
struct qlcnic_rx_buffer *buffer;
struct sk_buff *skb;
struct qlcnic_host_rds_ring *rds_ring;
int index, length, cksum, pkt_offset;
u16 vid = 0xffff;
if (unlikely(ring >= adapter->max_rds_rings))
return NULL;
rds_ring = &recv_ctx->rds_rings[ring];
index = qlcnic_get_sts_refhandle(sts_data0);
if (unlikely(index >= rds_ring->num_desc))
return NULL;
buffer = &rds_ring->rx_buf_arr[index];
length = qlcnic_get_sts_totallength(sts_data0);
cksum = qlcnic_get_sts_status(sts_data0);
pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
if (!skb)
return buffer;
if (length > rds_ring->skb_size)
skb_put(skb, rds_ring->skb_size);
else
skb_put(skb, length);
if (pkt_offset)
skb_pull(skb, pkt_offset);
if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
adapter->stats.rxdropped++;
dev_kfree_skb(skb);
return buffer;
}
skb->protocol = eth_type_trans(skb, netdev);
if (vid != 0xffff)
__vlan_hwaccel_put_tag(skb, vid);
napi_gro_receive(&sds_ring->napi, skb);
adapter->stats.rx_pkts++;
adapter->stats.rxbytes += length;
return buffer;
}
#define QLC_TCP_HDR_SIZE 20
#define QLC_TCP_TS_OPTION_SIZE 12
#define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
static struct qlcnic_rx_buffer *
qlcnic_process_lro(struct qlcnic_adapter *adapter,
int ring, u64 sts_data0, u64 sts_data1)
{
struct net_device *netdev = adapter->netdev;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
struct qlcnic_rx_buffer *buffer;
struct sk_buff *skb;
struct qlcnic_host_rds_ring *rds_ring;
struct iphdr *iph;
struct tcphdr *th;
bool push, timestamp;
int l2_hdr_offset, l4_hdr_offset;
int index;
u16 lro_length, length, data_offset;
u32 seq_number;
u16 vid = 0xffff;
if (unlikely(ring > adapter->max_rds_rings))
return NULL;
rds_ring = &recv_ctx->rds_rings[ring];
index = qlcnic_get_lro_sts_refhandle(sts_data0);
if (unlikely(index > rds_ring->num_desc))
return NULL;
buffer = &rds_ring->rx_buf_arr[index];
timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
lro_length = qlcnic_get_lro_sts_length(sts_data0);
l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
push = qlcnic_get_lro_sts_push_flag(sts_data0);
seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
if (!skb)
return buffer;
if (timestamp)
data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
else
data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
skb_put(skb, lro_length + data_offset);
skb_pull(skb, l2_hdr_offset);
if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
adapter->stats.rxdropped++;
dev_kfree_skb(skb);
return buffer;
}
skb->protocol = eth_type_trans(skb, netdev);
iph = (struct iphdr *)skb->data;
th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
iph->tot_len = htons(length);
iph->check = 0;
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
th->psh = push;
th->seq = htonl(seq_number);
length = skb->len;
if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP)
skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1);
if (vid != 0xffff)
__vlan_hwaccel_put_tag(skb, vid);
netif_receive_skb(skb);
adapter->stats.lro_pkts++;
adapter->stats.lrobytes += length;
return buffer;
}
int
qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
{
struct qlcnic_adapter *adapter = sds_ring->adapter;
struct list_head *cur;
struct status_desc *desc;
struct qlcnic_rx_buffer *rxbuf;
u64 sts_data0, sts_data1;
int count = 0;
int opcode, ring, desc_cnt;
u32 consumer = sds_ring->consumer;
while (count < max) {
desc = &sds_ring->desc_head[consumer];
sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
if (!(sts_data0 & STATUS_OWNER_HOST))
break;
desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
opcode = qlcnic_get_sts_opcode(sts_data0);
switch (opcode) {
case QLCNIC_RXPKT_DESC:
case QLCNIC_OLD_RXPKT_DESC:
case QLCNIC_SYN_OFFLOAD:
ring = qlcnic_get_sts_type(sts_data0);
rxbuf = qlcnic_process_rcv(adapter, sds_ring,
ring, sts_data0);
break;
case QLCNIC_LRO_DESC:
ring = qlcnic_get_lro_sts_type(sts_data0);
sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
rxbuf = qlcnic_process_lro(adapter, ring, sts_data0,
sts_data1);
break;
case QLCNIC_RESPONSE_DESC:
qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
default:
goto skip;
}
WARN_ON(desc_cnt > 1);
if (likely(rxbuf))
list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
else
adapter->stats.null_rxbuf++;
skip:
for (; desc_cnt > 0; desc_cnt--) {
desc = &sds_ring->desc_head[consumer];
desc->status_desc_data[0] =
cpu_to_le64(STATUS_OWNER_PHANTOM);
consumer = get_next_index(consumer, sds_ring->num_desc);
}
count++;
}
for (ring = 0; ring < adapter->max_rds_rings; ring++) {
struct qlcnic_host_rds_ring *rds_ring =
&adapter->recv_ctx->rds_rings[ring];
if (!list_empty(&sds_ring->free_list[ring])) {
list_for_each(cur, &sds_ring->free_list[ring]) {
rxbuf = list_entry(cur,
struct qlcnic_rx_buffer, list);
qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
}
spin_lock(&rds_ring->lock);
list_splice_tail_init(&sds_ring->free_list[ring],
&rds_ring->free_list);
spin_unlock(&rds_ring->lock);
}
qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
}
if (count) {
sds_ring->consumer = consumer;
writel(consumer, sds_ring->crb_sts_consumer);
}
return count;
}
void
qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring)
{
struct rcv_desc *pdesc;
struct qlcnic_rx_buffer *buffer;
int count = 0;
u32 producer;
struct list_head *head;
producer = rds_ring->producer;
head = &rds_ring->free_list;
while (!list_empty(head)) {
buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
if (!buffer->skb) {
if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
break;
}
count++;
list_del(&buffer->list);
/* make a rcv descriptor */
pdesc = &rds_ring->desc_head[producer];
pdesc->addr_buffer = cpu_to_le64(buffer->dma);
pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
producer = get_next_index(producer, rds_ring->num_desc);
}
if (count) {
rds_ring->producer = producer;
writel((producer-1) & (rds_ring->num_desc-1),
rds_ring->crb_rcv_producer);
}
}
static void
qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring)
{
struct rcv_desc *pdesc;
struct qlcnic_rx_buffer *buffer;
int count = 0;
uint32_t producer;
struct list_head *head;
if (!spin_trylock(&rds_ring->lock))
return;
producer = rds_ring->producer;
head = &rds_ring->free_list;
while (!list_empty(head)) {
buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
if (!buffer->skb) {
if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
break;
}
count++;
list_del(&buffer->list);
/* make a rcv descriptor */
pdesc = &rds_ring->desc_head[producer];
pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
pdesc->addr_buffer = cpu_to_le64(buffer->dma);
producer = get_next_index(producer, rds_ring->num_desc);
}
if (count) {
rds_ring->producer = producer;
writel((producer - 1) & (rds_ring->num_desc - 1),
rds_ring->crb_rcv_producer);
}
spin_unlock(&rds_ring->lock);
}
static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter)
{
int i;
unsigned char *data = skb->data;
printk(KERN_INFO "\n");
for (i = 0; i < skb->len; i++) {
QLCDB(adapter, DRV, "%02x ", data[i]);
if ((i & 0x0f) == 8)
printk(KERN_INFO "\n");
}
}
static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring,
u64 sts_data0)
{
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
struct sk_buff *skb;
struct qlcnic_host_rds_ring *rds_ring;
int index, length, cksum, pkt_offset;
if (unlikely(ring >= adapter->max_rds_rings))
return;
rds_ring = &recv_ctx->rds_rings[ring];
index = qlcnic_get_sts_refhandle(sts_data0);
length = qlcnic_get_sts_totallength(sts_data0);
if (unlikely(index >= rds_ring->num_desc))
return;
cksum = qlcnic_get_sts_status(sts_data0);
pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
if (!skb)
return;
if (length > rds_ring->skb_size)
skb_put(skb, rds_ring->skb_size);
else
skb_put(skb, length);
if (pkt_offset)
skb_pull(skb, pkt_offset);
if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
adapter->diag_cnt++;
else
dump_skb(skb, adapter);
dev_kfree_skb_any(skb);
adapter->stats.rx_pkts++;
adapter->stats.rxbytes += length;
return;
}
void
qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
{
struct qlcnic_adapter *adapter = sds_ring->adapter;
struct status_desc *desc;
u64 sts_data0;
int ring, opcode, desc_cnt;
u32 consumer = sds_ring->consumer;
desc = &sds_ring->desc_head[consumer];
sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
if (!(sts_data0 & STATUS_OWNER_HOST))
return;
desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
opcode = qlcnic_get_sts_opcode(sts_data0);
switch (opcode) {
case QLCNIC_RESPONSE_DESC:
qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
break;
default:
ring = qlcnic_get_sts_type(sts_data0);
qlcnic_process_rcv_diag(adapter, ring, sts_data0);
break;
}
for (; desc_cnt > 0; desc_cnt--) {
desc = &sds_ring->desc_head[consumer];
desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
consumer = get_next_index(consumer, sds_ring->num_desc);
}
sds_ring->consumer = consumer;
writel(consumer, sds_ring->crb_sts_consumer);
}
void qlcnic_fetch_mac(u32 off1, u32 off2, u8 alt_mac, u8 *mac)
{
u32 mac_low, mac_high;
int i;
mac_low = off1;
mac_high = off2;
if (alt_mac) {
mac_low |= (mac_low >> 16) | (mac_high << 16);
mac_high >>= 16;
}
for (i = 0; i < 2; i++)
mac[i] = (u8)(mac_high >> ((1 - i) * 8));
for (i = 2; i < 6; i++)
mac[i] = (u8)(mac_low >> ((5 - i) * 8));
}
drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c 0 → 100644
View file @ c70001a9
#include <linux/netdevice.h>
#include <linux/if_vlan.h>
#include <net/ip.h>
#include <linux/ipv6.h>
#include "qlcnic.h"
#define QLCNIC_MAC_HASH(MAC)\
((((MAC) & 0x70000) >> 0x10) | (((MAC) & 0x70000000000ULL) >> 0x25))
#define TX_ETHER_PKT 0x01
#define TX_TCP_PKT 0x02
#define TX_UDP_PKT 0x03
#define TX_IP_PKT 0x04
#define TX_TCP_LSO 0x05
#define TX_TCP_LSO6 0x06
#define TX_TCPV6_PKT 0x0b
#define TX_UDPV6_PKT 0x0c
#define FLAGS_VLAN_TAGGED 0x10
#define FLAGS_VLAN_OOB 0x40
#define qlcnic_set_tx_vlan_tci(cmd_desc, v) \
(cmd_desc)->vlan_TCI = cpu_to_le16(v);
#define qlcnic_set_cmd_desc_port(cmd_desc, var) \
((cmd_desc)->port_ctxid |= ((var) & 0x0F))
#define qlcnic_set_cmd_desc_ctxid(cmd_desc, var) \
((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0))
#define qlcnic_set_tx_port(_desc, _port) \
((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0))
#define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \
((_desc)->flags_opcode |= \
cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7)))
#define qlcnic_set_tx_frags_len(_desc, _frags, _len) \
((_desc)->nfrags__length = \
cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8)))
/* owner bits of status_desc */
#define STATUS_OWNER_HOST (0x1ULL << 56)
#define STATUS_OWNER_PHANTOM (0x2ULL << 56)
/* Status descriptor:
0-3 port, 4-7 status, 8-11 type, 12-27 total_length
28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset
53-55 desc_cnt, 56-57 owner, 58-63 opcode
*/
#define qlcnic_get_sts_port(sts_data) \
((sts_data) & 0x0F)
#define qlcnic_get_sts_status(sts_data) \
(((sts_data) >> 4) & 0x0F)
#define qlcnic_get_sts_type(sts_data) \
(((sts_data) >> 8) & 0x0F)
#define qlcnic_get_sts_totallength(sts_data) \
(((sts_data) >> 12) & 0xFFFF)
#define qlcnic_get_sts_refhandle(sts_data) \
(((sts_data) >> 28) & 0xFFFF)
#define qlcnic_get_sts_prot(sts_data) \
(((sts_data) >> 44) & 0x0F)
#define qlcnic_get_sts_pkt_offset(sts_data) \
(((sts_data) >> 48) & 0x1F)
#define qlcnic_get_sts_desc_cnt(sts_data) \
(((sts_data) >> 53) & 0x7)
#define qlcnic_get_sts_opcode(sts_data) \
(((sts_data) >> 58) & 0x03F)
#define qlcnic_get_lro_sts_refhandle(sts_data) \
((sts_data) & 0x0FFFF)
#define qlcnic_get_lro_sts_length(sts_data) \
(((sts_data) >> 16) & 0x0FFFF)
#define qlcnic_get_lro_sts_l2_hdr_offset(sts_data) \
(((sts_data) >> 32) & 0x0FF)
#define qlcnic_get_lro_sts_l4_hdr_offset(sts_data) \
(((sts_data) >> 40) & 0x0FF)
#define qlcnic_get_lro_sts_timestamp(sts_data) \
(((sts_data) >> 48) & 0x1)
#define qlcnic_get_lro_sts_type(sts_data) \
(((sts_data) >> 49) & 0x7)
#define qlcnic_get_lro_sts_push_flag(sts_data) \
(((sts_data) >> 52) & 0x1)
#define qlcnic_get_lro_sts_seq_number(sts_data) \
((sts_data) & 0x0FFFFFFFF)
#define qlcnic_get_lro_sts_mss(sts_data1) \
((sts_data1 >> 32) & 0x0FFFF)
/* opcode field in status_desc */
#define QLCNIC_SYN_OFFLOAD 0x03
#define QLCNIC_RXPKT_DESC 0x04
#define QLCNIC_OLD_RXPKT_DESC 0x3f
#define QLCNIC_RESPONSE_DESC 0x05
#define QLCNIC_LRO_DESC 0x12
/* for status field in status_desc */
#define STATUS_CKSUM_LOOP 0
#define STATUS_CKSUM_OK 2
static void qlcnic_change_filter(struct qlcnic_adapter *adapter,
u64 uaddr, __le16 vlan_id, struct qlcnic_host_tx_ring *tx_ring)
{
struct cmd_desc_type0 *hwdesc;
struct qlcnic_nic_req *req;
struct qlcnic_mac_req *mac_req;
struct qlcnic_vlan_req *vlan_req;
u32 producer;
u64 word;
producer = tx_ring->producer;
hwdesc = &tx_ring->desc_head[tx_ring->producer];
req = (struct qlcnic_nic_req *)hwdesc;
memset(req, 0, sizeof(struct qlcnic_nic_req));
req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23);
word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16);
req->req_hdr = cpu_to_le64(word);
mac_req = (struct qlcnic_mac_req *)&(req->words[0]);
mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD;
memcpy(mac_req->mac_addr, &uaddr, ETH_ALEN);
vlan_req = (struct qlcnic_vlan_req *)&req->words[1];
vlan_req->vlan_id = vlan_id;
tx_ring->producer = get_next_index(producer, tx_ring->num_desc);
smp_mb();
}
static void
qlcnic_send_filter(struct qlcnic_adapter *adapter,
struct qlcnic_host_tx_ring *tx_ring,
struct cmd_desc_type0 *first_desc,
struct sk_buff *skb)
{
struct ethhdr *phdr = (struct ethhdr *)(skb->data);
struct qlcnic_filter *fil, *tmp_fil;
struct hlist_node *tmp_hnode, *n;
struct hlist_head *head;
u64 src_addr = 0;
__le16 vlan_id = 0;
u8 hindex;
if (ether_addr_equal(phdr->h_source, adapter->mac_addr))
return;
if (adapter->fhash.fnum >= adapter->fhash.fmax)
return;
/* Only NPAR capable devices support vlan based learning*/
if (adapter->flags & QLCNIC_ESWITCH_ENABLED)
vlan_id = first_desc->vlan_TCI;
memcpy(&src_addr, phdr->h_source, ETH_ALEN);
hindex = QLCNIC_MAC_HASH(src_addr) & (QLCNIC_LB_MAX_FILTERS - 1);
head = &(adapter->fhash.fhead[hindex]);
hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) &&
tmp_fil->vlan_id == vlan_id) {
if (jiffies >
(QLCNIC_READD_AGE * HZ + tmp_fil->ftime))
qlcnic_change_filter(adapter, src_addr, vlan_id,
tx_ring);
tmp_fil->ftime = jiffies;
return;
}
}
fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC);
if (!fil)
return;
qlcnic_change_filter(adapter, src_addr, vlan_id, tx_ring);
fil->ftime = jiffies;
fil->vlan_id = vlan_id;
memcpy(fil->faddr, &src_addr, ETH_ALEN);
spin_lock(&adapter->mac_learn_lock);
hlist_add_head(&(fil->fnode), head);
adapter->fhash.fnum++;
spin_unlock(&adapter->mac_learn_lock);
}
static int
qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
struct cmd_desc_type0 *first_desc,
struct sk_buff *skb)
{
u8 opcode = 0, hdr_len = 0;
u16 flags = 0, vlan_tci = 0;
int copied, offset, copy_len;
struct cmd_desc_type0 *hwdesc;
struct vlan_ethhdr *vh;
struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
u16 protocol = ntohs(skb->protocol);
u32 producer = tx_ring->producer;
if (protocol == ETH_P_8021Q) {
vh = (struct vlan_ethhdr *)skb->data;
flags = FLAGS_VLAN_TAGGED;
vlan_tci = ntohs(vh->h_vlan_TCI);
protocol = ntohs(vh->h_vlan_encapsulated_proto);
} else if (vlan_tx_tag_present(skb)) {
flags = FLAGS_VLAN_OOB;
vlan_tci = vlan_tx_tag_get(skb);
}
if (unlikely(adapter->pvid)) {
if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
return -EIO;
if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED))
goto set_flags;
flags = FLAGS_VLAN_OOB;
vlan_tci = adapter->pvid;
}
set_flags:
qlcnic_set_tx_vlan_tci(first_desc, vlan_tci);
qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
if (*(skb->data) & BIT_0) {
flags |= BIT_0;
memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
}
opcode = TX_ETHER_PKT;
if ((adapter->netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
skb_shinfo(skb)->gso_size > 0) {
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
first_desc->total_hdr_length = hdr_len;
opcode = (protocol == ETH_P_IPV6) ? TX_TCP_LSO6 : TX_TCP_LSO;
/* For LSO, we need to copy the MAC/IP/TCP headers into
* the descriptor ring */
copied = 0;
offset = 2;
if (flags & FLAGS_VLAN_OOB) {
first_desc->total_hdr_length += VLAN_HLEN;
first_desc->tcp_hdr_offset = VLAN_HLEN;
first_desc->ip_hdr_offset = VLAN_HLEN;
/* Only in case of TSO on vlan device */
flags |= FLAGS_VLAN_TAGGED;
/* Create a TSO vlan header template for firmware */
hwdesc = &tx_ring->desc_head[producer];
tx_ring->cmd_buf_arr[producer].skb = NULL;
copy_len = min((int)sizeof(struct cmd_desc_type0) -
offset, hdr_len + VLAN_HLEN);
vh = (struct vlan_ethhdr *)((char *) hwdesc + 2);
skb_copy_from_linear_data(skb, vh, 12);
vh->h_vlan_proto = htons(ETH_P_8021Q);
vh->h_vlan_TCI = htons(vlan_tci);
skb_copy_from_linear_data_offset(skb, 12,
(char *)vh + 16, copy_len - 16);
copied = copy_len - VLAN_HLEN;
offset = 0;
producer = get_next_index(producer, tx_ring->num_desc);
}
while (copied < hdr_len) {
copy_len = min((int)sizeof(struct cmd_desc_type0) -
offset, (hdr_len - copied));
hwdesc = &tx_ring->desc_head[producer];
tx_ring->cmd_buf_arr[producer].skb = NULL;
skb_copy_from_linear_data_offset(skb, copied,
(char *) hwdesc + offset, copy_len);
copied += copy_len;
offset = 0;
producer = get_next_index(producer, tx_ring->num_desc);
}
tx_ring->producer = producer;
smp_mb();
adapter->stats.lso_frames++;
} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
u8 l4proto;
if (protocol == ETH_P_IP) {
l4proto = ip_hdr(skb)->protocol;
if (l4proto == IPPROTO_TCP)
opcode = TX_TCP_PKT;
else if (l4proto == IPPROTO_UDP)
opcode = TX_UDP_PKT;
} else if (protocol == ETH_P_IPV6) {
l4proto = ipv6_hdr(skb)->nexthdr;
if (l4proto == IPPROTO_TCP)
opcode = TX_TCPV6_PKT;
else if (l4proto == IPPROTO_UDP)
opcode = TX_UDPV6_PKT;
}
}
first_desc->tcp_hdr_offset += skb_transport_offset(skb);
first_desc->ip_hdr_offset += skb_network_offset(skb);
qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
return 0;
}
static int
qlcnic_map_tx_skb(struct pci_dev *pdev,
struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
{
struct qlcnic_skb_frag *nf;
struct skb_frag_struct *frag;
int i, nr_frags;
dma_addr_t map;
nr_frags = skb_shinfo(skb)->nr_frags;
nf = &pbuf->frag_array[0];
map = pci_map_single(pdev, skb->data,
skb_headlen(skb), PCI_DMA_TODEVICE);
if (pci_dma_mapping_error(pdev, map))
goto out_err;
nf->dma = map;
nf->length = skb_headlen(skb);
for (i = 0; i < nr_frags; i++) {
frag = &skb_shinfo(skb)->frags[i];
nf = &pbuf->frag_array[i+1];
map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
DMA_TO_DEVICE);
if (dma_mapping_error(&pdev->dev, map))
goto unwind;
nf->dma = map;
nf->length = skb_frag_size(frag);
}
return 0;
unwind:
while (--i >= 0) {
nf = &pbuf->frag_array[i+1];
pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
}
nf = &pbuf->frag_array[0];
pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
out_err:
return -ENOMEM;
}
static void
qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb,
struct qlcnic_cmd_buffer *pbuf)
{
struct qlcnic_skb_frag *nf = &pbuf->frag_array[0];
int nr_frags = skb_shinfo(skb)->nr_frags;
int i;
for (i = 0; i < nr_frags; i++) {
nf = &pbuf->frag_array[i+1];
pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
}
nf = &pbuf->frag_array[0];
pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
pbuf->skb = NULL;
}
static inline void
qlcnic_clear_cmddesc(u64 *desc)
{
desc[0] = 0ULL;
desc[2] = 0ULL;
desc[7] = 0ULL;
}
netdev_tx_t
qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
{
struct qlcnic_adapter *adapter = netdev_priv(netdev);
struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
struct qlcnic_cmd_buffer *pbuf;
struct qlcnic_skb_frag *buffrag;
struct cmd_desc_type0 *hwdesc, *first_desc;
struct pci_dev *pdev;
struct ethhdr *phdr;
int delta = 0;
int i, k;
u32 producer;
int frag_count;
u32 num_txd = tx_ring->num_desc;
if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
netif_stop_queue(netdev);
return NETDEV_TX_BUSY;
}
if (adapter->flags & QLCNIC_MACSPOOF) {
phdr = (struct ethhdr *)skb->data;
if (!ether_addr_equal(phdr->h_source, adapter->mac_addr))
goto drop_packet;
}
frag_count = skb_shinfo(skb)->nr_frags + 1;
/* 14 frags supported for normal packet and
* 32 frags supported for TSO packet
*/
if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) {
for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++)
delta += skb_frag_size(&skb_shinfo(skb)->frags[i]);
if (!__pskb_pull_tail(skb, delta))
goto drop_packet;
frag_count = 1 + skb_shinfo(skb)->nr_frags;
}
if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
netif_stop_queue(netdev);
if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH)
netif_start_queue(netdev);
else {
adapter->stats.xmit_off++;
return NETDEV_TX_BUSY;
}
}
producer = tx_ring->producer;
pbuf = &tx_ring->cmd_buf_arr[producer];
pdev = adapter->pdev;
first_desc = hwdesc = &tx_ring->desc_head[producer];
qlcnic_clear_cmddesc((u64 *)hwdesc);
if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
adapter->stats.tx_dma_map_error++;
goto drop_packet;
}
pbuf->skb = skb;
pbuf->frag_count = frag_count;
qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
qlcnic_set_tx_port(first_desc, adapter->portnum);
for (i = 0; i < frag_count; i++) {
k = i % 4;
if ((k == 0) && (i > 0)) {
/* move to next desc.*/
producer = get_next_index(producer, num_txd);
hwdesc = &tx_ring->desc_head[producer];
qlcnic_clear_cmddesc((u64 *)hwdesc);
tx_ring->cmd_buf_arr[producer].skb = NULL;
}
buffrag = &pbuf->frag_array[i];
hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
switch (k) {
case 0:
hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
break;
case 1:
hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
break;
case 2:
hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
break;
case 3:
hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
break;
}
}
tx_ring->producer = get_next_index(producer, num_txd);
smp_mb();
if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb)))
goto unwind_buff;
if (adapter->mac_learn)
qlcnic_send_filter(adapter, tx_ring, first_desc, skb);
adapter->stats.txbytes += skb->len;
adapter->stats.xmitcalled++;
qlcnic_update_cmd_producer(tx_ring);
return NETDEV_TX_OK;
unwind_buff:
qlcnic_unmap_buffers(pdev, skb, pbuf);
drop_packet:
adapter->stats.txdropped++;
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
{
struct net_device *netdev = adapter->netdev;
if (adapter->ahw->linkup && !linkup) {
netdev_info(netdev, "NIC Link is down\n");
adapter->ahw->linkup = 0;
if (netif_running(netdev)) {
netif_carrier_off(netdev);
netif_stop_queue(netdev);
}
} else if (!adapter->ahw->linkup && linkup) {
netdev_info(netdev, "NIC Link is up\n");
adapter->ahw->linkup = 1;
if (netif_running(netdev)) {
netif_carrier_on(netdev);
netif_wake_queue(netdev);
}
}
}
static int
qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring,
struct qlcnic_rx_buffer *buffer)
{
struct sk_buff *skb;
dma_addr_t dma;
struct pci_dev *pdev = adapter->pdev;
skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
if (!skb) {
adapter->stats.skb_alloc_failure++;
return -ENOMEM;
}
skb_reserve(skb, NET_IP_ALIGN);
dma = pci_map_single(pdev, skb->data,
rds_ring->dma_size, PCI_DMA_FROMDEVICE);
if (pci_dma_mapping_error(pdev, dma)) {
adapter->stats.rx_dma_map_error++;
dev_kfree_skb_any(skb);
return -ENOMEM;
}
buffer->skb = skb;
buffer->dma = dma;
return 0;
}
static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring)
{
struct rcv_desc *pdesc;
struct qlcnic_rx_buffer *buffer;
int count = 0;
uint32_t producer;
struct list_head *head;
if (!spin_trylock(&rds_ring->lock))
return;
producer = rds_ring->producer;
head = &rds_ring->free_list;
while (!list_empty(head)) {
buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
if (!buffer->skb) {
if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
break;
}
count++;
list_del(&buffer->list);
/* make a rcv descriptor */
pdesc = &rds_ring->desc_head[producer];
pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
pdesc->addr_buffer = cpu_to_le64(buffer->dma);
producer = get_next_index(producer, rds_ring->num_desc);
}
if (count) {
rds_ring->producer = producer;
writel((producer - 1) & (rds_ring->num_desc - 1),
rds_ring->crb_rcv_producer);
}
spin_unlock(&rds_ring->lock);
}
static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
{
u32 sw_consumer, hw_consumer;
int count = 0, i;
struct qlcnic_cmd_buffer *buffer;
struct pci_dev *pdev = adapter->pdev;
struct net_device *netdev = adapter->netdev;
struct qlcnic_skb_frag *frag;
int done;
struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
if (!spin_trylock(&adapter->tx_clean_lock))
return 1;
sw_consumer = tx_ring->sw_consumer;
hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
while (sw_consumer != hw_consumer) {
buffer = &tx_ring->cmd_buf_arr[sw_consumer];
if (buffer->skb) {
frag = &buffer->frag_array[0];
pci_unmap_single(pdev, frag->dma, frag->length,
PCI_DMA_TODEVICE);
frag->dma = 0ULL;
for (i = 1; i < buffer->frag_count; i++) {
frag++;
pci_unmap_page(pdev, frag->dma, frag->length,
PCI_DMA_TODEVICE);
frag->dma = 0ULL;
}
adapter->stats.xmitfinished++;
dev_kfree_skb_any(buffer->skb);
buffer->skb = NULL;
}
sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
if (++count >= MAX_STATUS_HANDLE)
break;
}
if (count && netif_running(netdev)) {
tx_ring->sw_consumer = sw_consumer;
smp_mb();
if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
netif_wake_queue(netdev);
adapter->stats.xmit_on++;
}
}
adapter->tx_timeo_cnt = 0;
}
/*
* If everything is freed up to consumer then check if the ring is full
* If the ring is full then check if more needs to be freed and
* schedule the call back again.
*
* This happens when there are 2 CPUs. One could be freeing and the
* other filling it. If the ring is full when we get out of here and
* the card has already interrupted the host then the host can miss the
* interrupt.
*
* There is still a possible race condition and the host could miss an
* interrupt. The card has to take care of this.
*/
hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
done = (sw_consumer == hw_consumer);
spin_unlock(&adapter->tx_clean_lock);
return done;
}
static int qlcnic_poll(struct napi_struct *napi, int budget)
{
struct qlcnic_host_sds_ring *sds_ring =
container_of(napi, struct qlcnic_host_sds_ring, napi);
struct qlcnic_adapter *adapter = sds_ring->adapter;
int tx_complete;
int work_done;
tx_complete = qlcnic_process_cmd_ring(adapter);
work_done = qlcnic_process_rcv_ring(sds_ring, budget);
if ((work_done < budget) && tx_complete) {
napi_complete(&sds_ring->napi);
if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
qlcnic_enable_int(sds_ring);
}
return work_done;
}
static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
{
struct qlcnic_host_sds_ring *sds_ring =
container_of(napi, struct qlcnic_host_sds_ring, napi);
struct qlcnic_adapter *adapter = sds_ring->adapter;
int work_done;
work_done = qlcnic_process_rcv_ring(sds_ring, budget);
if (work_done < budget) {
napi_complete(&sds_ring->napi);
if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
qlcnic_enable_int(sds_ring);
}
return work_done;
}
static void
qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
struct qlcnic_fw_msg *msg)
{
u32 cable_OUI;
u16 cable_len;
u16 link_speed;
u8 link_status, module, duplex, autoneg;
u8 lb_status = 0;
struct net_device *netdev = adapter->netdev;
adapter->has_link_events = 1;
cable_OUI = msg->body[1] & 0xffffffff;
cable_len = (msg->body[1] >> 32) & 0xffff;
link_speed = (msg->body[1] >> 48) & 0xffff;
link_status = msg->body[2] & 0xff;
duplex = (msg->body[2] >> 16) & 0xff;
autoneg = (msg->body[2] >> 24) & 0xff;
lb_status = (msg->body[2] >> 32) & 0x3;
module = (msg->body[2] >> 8) & 0xff;
if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
dev_info(&netdev->dev, "unsupported cable: OUI 0x%x, "
"length %d\n", cable_OUI, cable_len);
else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
dev_info(&netdev->dev, "unsupported cable length %d\n",
cable_len);
if (!link_status && (lb_status == QLCNIC_ILB_MODE ||
lb_status == QLCNIC_ELB_MODE))
adapter->ahw->loopback_state |= QLCNIC_LINKEVENT;
qlcnic_advert_link_change(adapter, link_status);
if (duplex == LINKEVENT_FULL_DUPLEX)
adapter->link_duplex = DUPLEX_FULL;
else
adapter->link_duplex = DUPLEX_HALF;
adapter->module_type = module;
adapter->link_autoneg = autoneg;
if (link_status) {
adapter->link_speed = link_speed;
} else {
adapter->link_speed = SPEED_UNKNOWN;
adapter->link_duplex = DUPLEX_UNKNOWN;
}
}
static void
qlcnic_handle_fw_message(int desc_cnt, int index,
struct qlcnic_host_sds_ring *sds_ring)
{
struct qlcnic_fw_msg msg;
struct status_desc *desc;
struct qlcnic_adapter *adapter;
struct device *dev;
int i = 0, opcode, ret;
while (desc_cnt > 0 && i < 8) {
desc = &sds_ring->desc_head[index];
msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
index = get_next_index(index, sds_ring->num_desc);
desc_cnt--;
}
adapter = sds_ring->adapter;
dev = &adapter->pdev->dev;
opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
switch (opcode) {
case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
qlcnic_handle_linkevent(adapter, &msg);
break;
case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK:
ret = (u32)(msg.body[1]);
switch (ret) {
case 0:
adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE;
break;
case 1:
dev_info(dev, "loopback already in progress\n");
adapter->diag_cnt = -QLCNIC_TEST_IN_PROGRESS;
break;
case 2:
dev_info(dev, "loopback cable is not connected\n");
adapter->diag_cnt = -QLCNIC_LB_CABLE_NOT_CONN;
break;
default:
dev_info(dev, "loopback configure request failed,"
" ret %x\n", ret);
adapter->diag_cnt = -QLCNIC_UNDEFINED_ERROR;
break;
}
break;
default:
break;
}
}
static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring, u16 index, u16 cksum)
{
struct qlcnic_rx_buffer *buffer;
struct sk_buff *skb;
buffer = &rds_ring->rx_buf_arr[index];
if (unlikely(buffer->skb == NULL)) {
WARN_ON(1);
return NULL;
}
pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
PCI_DMA_FROMDEVICE);
skb = buffer->skb;
if (likely((adapter->netdev->features & NETIF_F_RXCSUM) &&
(cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) {
adapter->stats.csummed++;
skb->ip_summed = CHECKSUM_UNNECESSARY;
} else {
skb_checksum_none_assert(skb);
}
buffer->skb = NULL;
return skb;
}
static inline int
qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter, struct sk_buff *skb,
u16 *vlan_tag)
{
struct ethhdr *eth_hdr;
if (!__vlan_get_tag(skb, vlan_tag)) {
eth_hdr = (struct ethhdr *) skb->data;
memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2);
skb_pull(skb, VLAN_HLEN);
}
if (!adapter->pvid)
return 0;
if (*vlan_tag == adapter->pvid) {
/* Outer vlan tag. Packet should follow non-vlan path */
*vlan_tag = 0xffff;
return 0;
}
if (adapter->flags & QLCNIC_TAGGING_ENABLED)
return 0;
return -EINVAL;
}
static struct qlcnic_rx_buffer *
qlcnic_process_rcv(struct qlcnic_adapter *adapter,
struct qlcnic_host_sds_ring *sds_ring,
int ring, u64 sts_data0)
{
struct net_device *netdev = adapter->netdev;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
struct qlcnic_rx_buffer *buffer;
struct sk_buff *skb;
struct qlcnic_host_rds_ring *rds_ring;
int index, length, cksum, pkt_offset;
u16 vid = 0xffff;
if (unlikely(ring >= adapter->max_rds_rings))
return NULL;
rds_ring = &recv_ctx->rds_rings[ring];
index = qlcnic_get_sts_refhandle(sts_data0);
if (unlikely(index >= rds_ring->num_desc))
return NULL;
buffer = &rds_ring->rx_buf_arr[index];
length = qlcnic_get_sts_totallength(sts_data0);
cksum = qlcnic_get_sts_status(sts_data0);
pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
if (!skb)
return buffer;
if (length > rds_ring->skb_size)
skb_put(skb, rds_ring->skb_size);
else
skb_put(skb, length);
if (pkt_offset)
skb_pull(skb, pkt_offset);
if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
adapter->stats.rxdropped++;
dev_kfree_skb(skb);
return buffer;
}
skb->protocol = eth_type_trans(skb, netdev);
if (vid != 0xffff)
__vlan_hwaccel_put_tag(skb, vid);
napi_gro_receive(&sds_ring->napi, skb);
adapter->stats.rx_pkts++;
adapter->stats.rxbytes += length;
return buffer;
}
#define QLC_TCP_HDR_SIZE 20
#define QLC_TCP_TS_OPTION_SIZE 12
#define QLC_TCP_TS_HDR_SIZE (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
static struct qlcnic_rx_buffer *
qlcnic_process_lro(struct qlcnic_adapter *adapter,
int ring, u64 sts_data0, u64 sts_data1)
{
struct net_device *netdev = adapter->netdev;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
struct qlcnic_rx_buffer *buffer;
struct sk_buff *skb;
struct qlcnic_host_rds_ring *rds_ring;
struct iphdr *iph;
struct tcphdr *th;
bool push, timestamp;
int l2_hdr_offset, l4_hdr_offset;
int index;
u16 lro_length, length, data_offset;
u32 seq_number;
u16 vid = 0xffff;
if (unlikely(ring > adapter->max_rds_rings))
return NULL;
rds_ring = &recv_ctx->rds_rings[ring];
index = qlcnic_get_lro_sts_refhandle(sts_data0);
if (unlikely(index > rds_ring->num_desc))
return NULL;
buffer = &rds_ring->rx_buf_arr[index];
timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
lro_length = qlcnic_get_lro_sts_length(sts_data0);
l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
push = qlcnic_get_lro_sts_push_flag(sts_data0);
seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
if (!skb)
return buffer;
if (timestamp)
data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
else
data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
skb_put(skb, lro_length + data_offset);
skb_pull(skb, l2_hdr_offset);
if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
adapter->stats.rxdropped++;
dev_kfree_skb(skb);
return buffer;
}
skb->protocol = eth_type_trans(skb, netdev);
iph = (struct iphdr *)skb->data;
th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
iph->tot_len = htons(length);
iph->check = 0;
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
th->psh = push;
th->seq = htonl(seq_number);
length = skb->len;
if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP)
skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1);
if (vid != 0xffff)
__vlan_hwaccel_put_tag(skb, vid);
netif_receive_skb(skb);
adapter->stats.lro_pkts++;
adapter->stats.lrobytes += length;
return buffer;
}
int
qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
{
struct qlcnic_adapter *adapter = sds_ring->adapter;
struct list_head *cur;
struct status_desc *desc;
struct qlcnic_rx_buffer *rxbuf;
u64 sts_data0, sts_data1;
int count = 0;
int opcode, ring, desc_cnt;
u32 consumer = sds_ring->consumer;
while (count < max) {
desc = &sds_ring->desc_head[consumer];
sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
if (!(sts_data0 & STATUS_OWNER_HOST))
break;
desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
opcode = qlcnic_get_sts_opcode(sts_data0);
switch (opcode) {
case QLCNIC_RXPKT_DESC:
case QLCNIC_OLD_RXPKT_DESC:
case QLCNIC_SYN_OFFLOAD:
ring = qlcnic_get_sts_type(sts_data0);
rxbuf = qlcnic_process_rcv(adapter, sds_ring,
ring, sts_data0);
break;
case QLCNIC_LRO_DESC:
ring = qlcnic_get_lro_sts_type(sts_data0);
sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
rxbuf = qlcnic_process_lro(adapter, ring, sts_data0,
sts_data1);
break;
case QLCNIC_RESPONSE_DESC:
qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
default:
goto skip;
}
WARN_ON(desc_cnt > 1);
if (likely(rxbuf))
list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
else
adapter->stats.null_rxbuf++;
skip:
for (; desc_cnt > 0; desc_cnt--) {
desc = &sds_ring->desc_head[consumer];
desc->status_desc_data[0] =
cpu_to_le64(STATUS_OWNER_PHANTOM);
consumer = get_next_index(consumer, sds_ring->num_desc);
}
count++;
}
for (ring = 0; ring < adapter->max_rds_rings; ring++) {
struct qlcnic_host_rds_ring *rds_ring =
&adapter->recv_ctx->rds_rings[ring];
if (!list_empty(&sds_ring->free_list[ring])) {
list_for_each(cur, &sds_ring->free_list[ring]) {
rxbuf = list_entry(cur,
struct qlcnic_rx_buffer, list);
qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
}
spin_lock(&rds_ring->lock);
list_splice_tail_init(&sds_ring->free_list[ring],
&rds_ring->free_list);
spin_unlock(&rds_ring->lock);
}
qlcnic_post_rx_buffers_nodb(adapter, rds_ring);
}
if (count) {
sds_ring->consumer = consumer;
writel(consumer, sds_ring->crb_sts_consumer);
}
return count;
}
void
qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter,
struct qlcnic_host_rds_ring *rds_ring)
{
struct rcv_desc *pdesc;
struct qlcnic_rx_buffer *buffer;
int count = 0;
u32 producer;
struct list_head *head;
producer = rds_ring->producer;
head = &rds_ring->free_list;
while (!list_empty(head)) {
buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
if (!buffer->skb) {
if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
break;
}
count++;
list_del(&buffer->list);
/* make a rcv descriptor */
pdesc = &rds_ring->desc_head[producer];
pdesc->addr_buffer = cpu_to_le64(buffer->dma);
pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
producer = get_next_index(producer, rds_ring->num_desc);
}
if (count) {
rds_ring->producer = producer;
writel((producer-1) & (rds_ring->num_desc-1),
rds_ring->crb_rcv_producer);
}
}
static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter)
{
int i;
unsigned char *data = skb->data;
printk(KERN_INFO "\n");
for (i = 0; i < skb->len; i++) {
QLCDB(adapter, DRV, "%02x ", data[i]);
if ((i & 0x0f) == 8)
printk(KERN_INFO "\n");
}
}
static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring,
u64 sts_data0)
{
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
struct sk_buff *skb;
struct qlcnic_host_rds_ring *rds_ring;
int index, length, cksum, pkt_offset;
if (unlikely(ring >= adapter->max_rds_rings))
return;
rds_ring = &recv_ctx->rds_rings[ring];
index = qlcnic_get_sts_refhandle(sts_data0);
length = qlcnic_get_sts_totallength(sts_data0);
if (unlikely(index >= rds_ring->num_desc))
return;
cksum = qlcnic_get_sts_status(sts_data0);
pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
if (!skb)
return;
if (length > rds_ring->skb_size)
skb_put(skb, rds_ring->skb_size);
else
skb_put(skb, length);
if (pkt_offset)
skb_pull(skb, pkt_offset);
if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
adapter->diag_cnt++;
else
dump_skb(skb, adapter);
dev_kfree_skb_any(skb);
adapter->stats.rx_pkts++;
adapter->stats.rxbytes += length;
return;
}
void
qlcnic_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
{
struct qlcnic_adapter *adapter = sds_ring->adapter;
struct status_desc *desc;
u64 sts_data0;
int ring, opcode, desc_cnt;
u32 consumer = sds_ring->consumer;
desc = &sds_ring->desc_head[consumer];
sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
if (!(sts_data0 & STATUS_OWNER_HOST))
return;
desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
opcode = qlcnic_get_sts_opcode(sts_data0);
switch (opcode) {
case QLCNIC_RESPONSE_DESC:
qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
break;
default:
ring = qlcnic_get_sts_type(sts_data0);
qlcnic_process_rcv_diag(adapter, ring, sts_data0);
break;
}
for (; desc_cnt > 0; desc_cnt--) {
desc = &sds_ring->desc_head[consumer];
desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
consumer = get_next_index(consumer, sds_ring->num_desc);
}
sds_ring->consumer = consumer;
writel(consumer, sds_ring->crb_sts_consumer);
}
void qlcnic_fetch_mac(u32 off1, u32 off2, u8 alt_mac, u8 *mac)
{
u32 mac_low, mac_high;
int i;
mac_low = off1;
mac_high = off2;
if (alt_mac) {
mac_low |= (mac_low >> 16) | (mac_high << 16);
mac_high >>= 16;
}
for (i = 0; i < 2; i++)
mac[i] = (u8)(mac_high >> ((1 - i) * 8));
for (i = 2; i < 6; i++)
mac[i] = (u8)(mac_low >> ((5 - i) * 8));
}
int qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
{
int ring;
struct qlcnic_host_sds_ring *sds_ring;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
return -ENOMEM;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
if (ring == adapter->max_sds_rings - 1)
netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll,
QLCNIC_NETDEV_WEIGHT/adapter->max_sds_rings);
else
netif_napi_add(netdev, &sds_ring->napi,
qlcnic_rx_poll, QLCNIC_NETDEV_WEIGHT*2);
}
return 0;
}
void qlcnic_napi_del(struct qlcnic_adapter *adapter)
{
int ring;
struct qlcnic_host_sds_ring *sds_ring;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
netif_napi_del(&sds_ring->napi);
}
qlcnic_free_sds_rings(adapter->recv_ctx);
}
void qlcnic_napi_enable(struct qlcnic_adapter *adapter)
{
int ring;
struct qlcnic_host_sds_ring *sds_ring;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
return;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
napi_enable(&sds_ring->napi);
qlcnic_enable_int(sds_ring);
}
}
void qlcnic_napi_disable(struct qlcnic_adapter *adapter)
{
int ring;
struct qlcnic_host_sds_ring *sds_ring;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
return;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
qlcnic_disable_int(sds_ring);
napi_synchronize(&sds_ring->napi);
napi_disable(&sds_ring->napi);
}
}
drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
View file @ c70001a9
...@@ -66,8 +66,6 @@ static void qlcnic_fw_poll_work(struct work_struct *work); ...@@ -66,8 +66,6 @@ static void qlcnic_fw_poll_work(struct work_struct *work);
static void qlcnic_schedule_work(struct qlcnic_adapter *adapter, static void qlcnic_schedule_work(struct qlcnic_adapter *adapter,
work_func_t func, int delay); work_func_t func, int delay);
static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter); static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter);
static int qlcnic_poll(struct napi_struct *napi, int budget);
static int qlcnic_rx_poll(struct napi_struct *napi, int budget);
#ifdef CONFIG_NET_POLL_CONTROLLER #ifdef CONFIG_NET_POLL_CONTROLLER
static void qlcnic_poll_controller(struct net_device *netdev); static void qlcnic_poll_controller(struct net_device *netdev);
#endif #endif
...@@ -130,23 +128,7 @@ static const u32 msi_tgt_status[8] = { ...@@ -130,23 +128,7 @@ static const u32 msi_tgt_status[8] = {
static const static const
struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG; struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG;
static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring) int qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
{
writel(0, sds_ring->crb_intr_mask);
}
static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring)
{
struct qlcnic_adapter *adapter = sds_ring->adapter;
writel(0x1, sds_ring->crb_intr_mask);
if (!QLCNIC_IS_MSI_FAMILY(adapter))
writel(0xfbff, adapter->tgt_mask_reg);
}
static int
qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
{ {
int size = sizeof(struct qlcnic_host_sds_ring) * count; int size = sizeof(struct qlcnic_host_sds_ring) * count;
...@@ -155,8 +137,7 @@ qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count) ...@@ -155,8 +137,7 @@ qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
return recv_ctx->sds_rings == NULL; return recv_ctx->sds_rings == NULL;
} }
static void void qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
{ {
if (recv_ctx->sds_rings != NULL) if (recv_ctx->sds_rings != NULL)
kfree(recv_ctx->sds_rings); kfree(recv_ctx->sds_rings);
...@@ -164,80 +145,6 @@ qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx) ...@@ -164,80 +145,6 @@ qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
recv_ctx->sds_rings = NULL; recv_ctx->sds_rings = NULL;
} }
static int
qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
{
int ring;
struct qlcnic_host_sds_ring *sds_ring;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
return -ENOMEM;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
if (ring == adapter->max_sds_rings - 1)
netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll,
QLCNIC_NETDEV_WEIGHT/adapter->max_sds_rings);
else
netif_napi_add(netdev, &sds_ring->napi,
qlcnic_rx_poll, QLCNIC_NETDEV_WEIGHT*2);
}
return 0;
}
static void
qlcnic_napi_del(struct qlcnic_adapter *adapter)
{
int ring;
struct qlcnic_host_sds_ring *sds_ring;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
netif_napi_del(&sds_ring->napi);
}
qlcnic_free_sds_rings(adapter->recv_ctx);
}
static void
qlcnic_napi_enable(struct qlcnic_adapter *adapter)
{
int ring;
struct qlcnic_host_sds_ring *sds_ring;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
return;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
napi_enable(&sds_ring->napi);
qlcnic_enable_int(sds_ring);
}
}
static void
qlcnic_napi_disable(struct qlcnic_adapter *adapter)
{
int ring;
struct qlcnic_host_sds_ring *sds_ring;
struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
return;
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
sds_ring = &recv_ctx->sds_rings[ring];
qlcnic_disable_int(sds_ring);
napi_synchronize(&sds_ring->napi);
napi_disable(&sds_ring->napi);
}
}
static void qlcnic_clear_stats(struct qlcnic_adapter *adapter) static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
{ {
memset(&adapter->stats, 0, sizeof(adapter->stats)); memset(&adapter->stats, 0, sizeof(adapter->stats));
...@@ -1924,428 +1831,6 @@ static void qlcnic_free_lb_filters_mem(struct qlcnic_adapter *adapter) ...@@ -1924,428 +1831,6 @@ static void qlcnic_free_lb_filters_mem(struct qlcnic_adapter *adapter)
adapter->fhash.fmax = 0; adapter->fhash.fmax = 0;
} }
static void qlcnic_change_filter(struct qlcnic_adapter *adapter,
u64 uaddr, __le16 vlan_id, struct qlcnic_host_tx_ring *tx_ring)
{
struct cmd_desc_type0 *hwdesc;
struct qlcnic_nic_req *req;
struct qlcnic_mac_req *mac_req;
struct qlcnic_vlan_req *vlan_req;
u32 producer;
u64 word;
producer = tx_ring->producer;
hwdesc = &tx_ring->desc_head[tx_ring->producer];
req = (struct qlcnic_nic_req *)hwdesc;
memset(req, 0, sizeof(struct qlcnic_nic_req));
req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23);
word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16);
req->req_hdr = cpu_to_le64(word);
mac_req = (struct qlcnic_mac_req *)&(req->words[0]);
mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD;
memcpy(mac_req->mac_addr, &uaddr, ETH_ALEN);
vlan_req = (struct qlcnic_vlan_req *)&req->words[1];
vlan_req->vlan_id = vlan_id;
tx_ring->producer = get_next_index(producer, tx_ring->num_desc);
smp_mb();
}
#define QLCNIC_MAC_HASH(MAC)\
((((MAC) & 0x70000) >> 0x10) | (((MAC) & 0x70000000000ULL) >> 0x25))
static void
qlcnic_send_filter(struct qlcnic_adapter *adapter,
struct qlcnic_host_tx_ring *tx_ring,
struct cmd_desc_type0 *first_desc,
struct sk_buff *skb)
{
struct ethhdr *phdr = (struct ethhdr *)(skb->data);
struct qlcnic_filter *fil, *tmp_fil;
struct hlist_node *tmp_hnode, *n;
struct hlist_head *head;
u64 src_addr = 0;
__le16 vlan_id = 0;
u8 hindex;
if (ether_addr_equal(phdr->h_source, adapter->mac_addr))
return;
if (adapter->fhash.fnum >= adapter->fhash.fmax)
return;
/* Only NPAR capable devices support vlan based learning*/
if (adapter->flags & QLCNIC_ESWITCH_ENABLED)
vlan_id = first_desc->vlan_TCI;
memcpy(&src_addr, phdr->h_source, ETH_ALEN);
hindex = QLCNIC_MAC_HASH(src_addr) & (QLCNIC_LB_MAX_FILTERS - 1);
head = &(adapter->fhash.fhead[hindex]);
hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) &&
tmp_fil->vlan_id == vlan_id) {
if (jiffies >
(QLCNIC_READD_AGE * HZ + tmp_fil->ftime))
qlcnic_change_filter(adapter, src_addr, vlan_id,
tx_ring);
tmp_fil->ftime = jiffies;
return;
}
}
fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC);
if (!fil)
return;
qlcnic_change_filter(adapter, src_addr, vlan_id, tx_ring);
fil->ftime = jiffies;
fil->vlan_id = vlan_id;
memcpy(fil->faddr, &src_addr, ETH_ALEN);
spin_lock(&adapter->mac_learn_lock);
hlist_add_head(&(fil->fnode), head);
adapter->fhash.fnum++;
spin_unlock(&adapter->mac_learn_lock);
}
static int
qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
struct cmd_desc_type0 *first_desc,
struct sk_buff *skb)
{
u8 opcode = 0, hdr_len = 0;
u16 flags = 0, vlan_tci = 0;
int copied, offset, copy_len;
struct cmd_desc_type0 *hwdesc;
struct vlan_ethhdr *vh;
struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
u16 protocol = ntohs(skb->protocol);
u32 producer = tx_ring->producer;
if (protocol == ETH_P_8021Q) {
vh = (struct vlan_ethhdr *)skb->data;
flags = FLAGS_VLAN_TAGGED;
vlan_tci = ntohs(vh->h_vlan_TCI);
protocol = ntohs(vh->h_vlan_encapsulated_proto);
} else if (vlan_tx_tag_present(skb)) {
flags = FLAGS_VLAN_OOB;
vlan_tci = vlan_tx_tag_get(skb);
}
if (unlikely(adapter->pvid)) {
if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
return -EIO;
if (vlan_tci && (adapter->flags & QLCNIC_TAGGING_ENABLED))
goto set_flags;
flags = FLAGS_VLAN_OOB;
vlan_tci = adapter->pvid;
}
set_flags:
qlcnic_set_tx_vlan_tci(first_desc, vlan_tci);
qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
if (*(skb->data) & BIT_0) {
flags |= BIT_0;
memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
}
opcode = TX_ETHER_PKT;
if ((adapter->netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
skb_shinfo(skb)->gso_size > 0) {
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
first_desc->total_hdr_length = hdr_len;
opcode = (protocol == ETH_P_IPV6) ? TX_TCP_LSO6 : TX_TCP_LSO;
/* For LSO, we need to copy the MAC/IP/TCP headers into
* the descriptor ring */
copied = 0;
offset = 2;
if (flags & FLAGS_VLAN_OOB) {
first_desc->total_hdr_length += VLAN_HLEN;
first_desc->tcp_hdr_offset = VLAN_HLEN;
first_desc->ip_hdr_offset = VLAN_HLEN;
/* Only in case of TSO on vlan device */
flags |= FLAGS_VLAN_TAGGED;
/* Create a TSO vlan header template for firmware */
hwdesc = &tx_ring->desc_head[producer];
tx_ring->cmd_buf_arr[producer].skb = NULL;
copy_len = min((int)sizeof(struct cmd_desc_type0) -
offset, hdr_len + VLAN_HLEN);
vh = (struct vlan_ethhdr *)((char *) hwdesc + 2);
skb_copy_from_linear_data(skb, vh, 12);
vh->h_vlan_proto = htons(ETH_P_8021Q);
vh->h_vlan_TCI = htons(vlan_tci);
skb_copy_from_linear_data_offset(skb, 12,
(char *)vh + 16, copy_len - 16);
copied = copy_len - VLAN_HLEN;
offset = 0;
producer = get_next_index(producer, tx_ring->num_desc);
}
while (copied < hdr_len) {
copy_len = min((int)sizeof(struct cmd_desc_type0) -
offset, (hdr_len - copied));
hwdesc = &tx_ring->desc_head[producer];
tx_ring->cmd_buf_arr[producer].skb = NULL;
skb_copy_from_linear_data_offset(skb, copied,
(char *) hwdesc + offset, copy_len);
copied += copy_len;
offset = 0;
producer = get_next_index(producer, tx_ring->num_desc);
}
tx_ring->producer = producer;
smp_mb();
adapter->stats.lso_frames++;
} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
u8 l4proto;
if (protocol == ETH_P_IP) {
l4proto = ip_hdr(skb)->protocol;
if (l4proto == IPPROTO_TCP)
opcode = TX_TCP_PKT;
else if (l4proto == IPPROTO_UDP)
opcode = TX_UDP_PKT;
} else if (protocol == ETH_P_IPV6) {
l4proto = ipv6_hdr(skb)->nexthdr;
if (l4proto == IPPROTO_TCP)
opcode = TX_TCPV6_PKT;
else if (l4proto == IPPROTO_UDP)
opcode = TX_UDPV6_PKT;
}
}
first_desc->tcp_hdr_offset += skb_transport_offset(skb);
first_desc->ip_hdr_offset += skb_network_offset(skb);
qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
return 0;
}
static int
qlcnic_map_tx_skb(struct pci_dev *pdev,
struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
{
struct qlcnic_skb_frag *nf;
struct skb_frag_struct *frag;
int i, nr_frags;
dma_addr_t map;
nr_frags = skb_shinfo(skb)->nr_frags;
nf = &pbuf->frag_array[0];
map = pci_map_single(pdev, skb->data,
skb_headlen(skb), PCI_DMA_TODEVICE);
if (pci_dma_mapping_error(pdev, map))
goto out_err;
nf->dma = map;
nf->length = skb_headlen(skb);
for (i = 0; i < nr_frags; i++) {
frag = &skb_shinfo(skb)->frags[i];
nf = &pbuf->frag_array[i+1];
map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
DMA_TO_DEVICE);
if (dma_mapping_error(&pdev->dev, map))
goto unwind;
nf->dma = map;
nf->length = skb_frag_size(frag);
}
return 0;
unwind:
while (--i >= 0) {
nf = &pbuf->frag_array[i+1];
pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
}
nf = &pbuf->frag_array[0];
pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
out_err:
return -ENOMEM;
}
static void
qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb,
struct qlcnic_cmd_buffer *pbuf)
{
struct qlcnic_skb_frag *nf = &pbuf->frag_array[0];
int nr_frags = skb_shinfo(skb)->nr_frags;
int i;
for (i = 0; i < nr_frags; i++) {
nf = &pbuf->frag_array[i+1];
pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
}
nf = &pbuf->frag_array[0];
pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
pbuf->skb = NULL;
}
static inline void
qlcnic_clear_cmddesc(u64 *desc)
{
desc[0] = 0ULL;
desc[2] = 0ULL;
desc[7] = 0ULL;
}
netdev_tx_t
qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
{
struct qlcnic_adapter *adapter = netdev_priv(netdev);
struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
struct qlcnic_cmd_buffer *pbuf;
struct qlcnic_skb_frag *buffrag;
struct cmd_desc_type0 *hwdesc, *first_desc;
struct pci_dev *pdev;
struct ethhdr *phdr;
int delta = 0;
int i, k;
u32 producer;
int frag_count;
u32 num_txd = tx_ring->num_desc;
if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
netif_stop_queue(netdev);
return NETDEV_TX_BUSY;
}
if (adapter->flags & QLCNIC_MACSPOOF) {
phdr = (struct ethhdr *)skb->data;
if (!ether_addr_equal(phdr->h_source, adapter->mac_addr))
goto drop_packet;
}
frag_count = skb_shinfo(skb)->nr_frags + 1;
/* 14 frags supported for normal packet and
* 32 frags supported for TSO packet
*/
if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) {
for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++)
delta += skb_frag_size(&skb_shinfo(skb)->frags[i]);
if (!__pskb_pull_tail(skb, delta))
goto drop_packet;
frag_count = 1 + skb_shinfo(skb)->nr_frags;
}
if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
netif_stop_queue(netdev);
if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH)
netif_start_queue(netdev);
else {
adapter->stats.xmit_off++;
return NETDEV_TX_BUSY;
}
}
producer = tx_ring->producer;
pbuf = &tx_ring->cmd_buf_arr[producer];
pdev = adapter->pdev;
first_desc = hwdesc = &tx_ring->desc_head[producer];
qlcnic_clear_cmddesc((u64 *)hwdesc);
if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
adapter->stats.tx_dma_map_error++;
goto drop_packet;
}
pbuf->skb = skb;
pbuf->frag_count = frag_count;
qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
qlcnic_set_tx_port(first_desc, adapter->portnum);
for (i = 0; i < frag_count; i++) {
k = i % 4;
if ((k == 0) && (i > 0)) {
/* move to next desc.*/
producer = get_next_index(producer, num_txd);
hwdesc = &tx_ring->desc_head[producer];
qlcnic_clear_cmddesc((u64 *)hwdesc);
tx_ring->cmd_buf_arr[producer].skb = NULL;
}
buffrag = &pbuf->frag_array[i];
hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
switch (k) {
case 0:
hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
break;
case 1:
hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
break;
case 2:
hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
break;
case 3:
hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
break;
}
}
tx_ring->producer = get_next_index(producer, num_txd);
smp_mb();
if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb)))
goto unwind_buff;
if (adapter->mac_learn)
qlcnic_send_filter(adapter, tx_ring, first_desc, skb);
adapter->stats.txbytes += skb->len;
adapter->stats.xmitcalled++;
qlcnic_update_cmd_producer(tx_ring);
return NETDEV_TX_OK;
unwind_buff:
qlcnic_unmap_buffers(pdev, skb, pbuf);
drop_packet:
adapter->stats.txdropped++;
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
static int qlcnic_check_temp(struct qlcnic_adapter *adapter) static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
{ {
struct net_device *netdev = adapter->netdev; struct net_device *netdev = adapter->netdev;
...@@ -2382,27 +1867,6 @@ static int qlcnic_check_temp(struct qlcnic_adapter *adapter) ...@@ -2382,27 +1867,6 @@ static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
return rv; return rv;
} }
void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
{
struct net_device *netdev = adapter->netdev;
if (adapter->ahw->linkup && !linkup) {
netdev_info(netdev, "NIC Link is down\n");
adapter->ahw->linkup = 0;
if (netif_running(netdev)) {
netif_carrier_off(netdev);
netif_stop_queue(netdev);
}
} else if (!adapter->ahw->linkup && linkup) {
netdev_info(netdev, "NIC Link is up\n");
adapter->ahw->linkup = 1;
if (netif_running(netdev)) {
netif_carrier_on(netdev);
netif_wake_queue(netdev);
}
}
}
static void qlcnic_tx_timeout(struct net_device *netdev) static void qlcnic_tx_timeout(struct net_device *netdev)
{ {
struct qlcnic_adapter *adapter = netdev_priv(netdev); struct qlcnic_adapter *adapter = netdev_priv(netdev);
...@@ -2509,122 +1973,6 @@ static irqreturn_t qlcnic_msix_intr(int irq, void *data) ...@@ -2509,122 +1973,6 @@ static irqreturn_t qlcnic_msix_intr(int irq, void *data)
return IRQ_HANDLED; return IRQ_HANDLED;
} }
static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
{
u32 sw_consumer, hw_consumer;
int count = 0, i;
struct qlcnic_cmd_buffer *buffer;
struct pci_dev *pdev = adapter->pdev;
struct net_device *netdev = adapter->netdev;
struct qlcnic_skb_frag *frag;
int done;
struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
if (!spin_trylock(&adapter->tx_clean_lock))
return 1;
sw_consumer = tx_ring->sw_consumer;
hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
while (sw_consumer != hw_consumer) {
buffer = &tx_ring->cmd_buf_arr[sw_consumer];
if (buffer->skb) {
frag = &buffer->frag_array[0];
pci_unmap_single(pdev, frag->dma, frag->length,
PCI_DMA_TODEVICE);
frag->dma = 0ULL;
for (i = 1; i < buffer->frag_count; i++) {
frag++;
pci_unmap_page(pdev, frag->dma, frag->length,
PCI_DMA_TODEVICE);
frag->dma = 0ULL;
}
adapter->stats.xmitfinished++;
dev_kfree_skb_any(buffer->skb);
buffer->skb = NULL;
}
sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
if (++count >= MAX_STATUS_HANDLE)
break;
}
if (count && netif_running(netdev)) {
tx_ring->sw_consumer = sw_consumer;
smp_mb();
if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
netif_wake_queue(netdev);
adapter->stats.xmit_on++;
}
}
adapter->tx_timeo_cnt = 0;
}
/*
* If everything is freed up to consumer then check if the ring is full
* If the ring is full then check if more needs to be freed and
* schedule the call back again.
*
* This happens when there are 2 CPUs. One could be freeing and the
* other filling it. If the ring is full when we get out of here and
* the card has already interrupted the host then the host can miss the
* interrupt.
*
* There is still a possible race condition and the host could miss an
* interrupt. The card has to take care of this.
*/
hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
done = (sw_consumer == hw_consumer);
spin_unlock(&adapter->tx_clean_lock);
return done;
}
static int qlcnic_poll(struct napi_struct *napi, int budget)
{
struct qlcnic_host_sds_ring *sds_ring =
container_of(napi, struct qlcnic_host_sds_ring, napi);
struct qlcnic_adapter *adapter = sds_ring->adapter;
int tx_complete;
int work_done;
tx_complete = qlcnic_process_cmd_ring(adapter);
work_done = qlcnic_process_rcv_ring(sds_ring, budget);
if ((work_done < budget) && tx_complete) {
napi_complete(&sds_ring->napi);
if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
qlcnic_enable_int(sds_ring);
}
return work_done;
}
static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
{
struct qlcnic_host_sds_ring *sds_ring =
container_of(napi, struct qlcnic_host_sds_ring, napi);
struct qlcnic_adapter *adapter = sds_ring->adapter;
int work_done;
work_done = qlcnic_process_rcv_ring(sds_ring, budget);
if (work_done < budget) {
napi_complete(&sds_ring->napi);
if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
qlcnic_enable_int(sds_ring);
}
return work_done;
}
#ifdef CONFIG_NET_POLL_CONTROLLER #ifdef CONFIG_NET_POLL_CONTROLLER
static void qlcnic_poll_controller(struct net_device *netdev) static void qlcnic_poll_controller(struct net_device *netdev)
{ {
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7