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path: root/drivers/net/ethernet/intel/e1000/e1000_main.c
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Diffstat (limited to 'drivers/net/ethernet/intel/e1000/e1000_main.c')
-rw-r--r--drivers/net/ethernet/intel/e1000/e1000_main.c524
1 files changed, 323 insertions, 201 deletions
diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c
index 660971f304b..24f3986cfae 100644
--- a/drivers/net/ethernet/intel/e1000/e1000_main.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
@@ -46,7 +46,7 @@ static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation
* Macro expands to...
* {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
*/
-static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
+static const struct pci_device_id e1000_pci_tbl[] = {
INTEL_E1000_ETHERNET_DEVICE(0x1000),
INTEL_E1000_ETHERNET_DEVICE(0x1001),
INTEL_E1000_ETHERNET_DEVICE(0x1004),
@@ -1075,7 +1075,10 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
NETIF_F_HW_CSUM |
NETIF_F_SG);
- netdev->priv_flags |= IFF_UNICAST_FLT;
+ /* Do not set IFF_UNICAST_FLT for VMWare's 82545EM */
+ if (hw->device_id != E1000_DEV_ID_82545EM_COPPER ||
+ hw->subsystem_vendor_id != PCI_VENDOR_ID_VMWARE)
+ netdev->priv_flags |= IFF_UNICAST_FLT;
adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
@@ -1497,7 +1500,7 @@ static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
struct pci_dev *pdev = adapter->pdev;
int size;
- size = sizeof(struct e1000_buffer) * txdr->count;
+ size = sizeof(struct e1000_tx_buffer) * txdr->count;
txdr->buffer_info = vzalloc(size);
if (!txdr->buffer_info)
return -ENOMEM;
@@ -1687,7 +1690,7 @@ static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
struct pci_dev *pdev = adapter->pdev;
int size, desc_len;
- size = sizeof(struct e1000_buffer) * rxdr->count;
+ size = sizeof(struct e1000_rx_buffer) * rxdr->count;
rxdr->buffer_info = vzalloc(size);
if (!rxdr->buffer_info)
return -ENOMEM;
@@ -1947,8 +1950,9 @@ void e1000_free_all_tx_resources(struct e1000_adapter *adapter)
e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
}
-static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
- struct e1000_buffer *buffer_info)
+static void
+e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
+ struct e1000_tx_buffer *buffer_info)
{
if (buffer_info->dma) {
if (buffer_info->mapped_as_page)
@@ -1977,7 +1981,7 @@ static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
struct e1000_tx_ring *tx_ring)
{
struct e1000_hw *hw = &adapter->hw;
- struct e1000_buffer *buffer_info;
+ struct e1000_tx_buffer *buffer_info;
unsigned long size;
unsigned int i;
@@ -1989,7 +1993,7 @@ static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
}
netdev_reset_queue(adapter->netdev);
- size = sizeof(struct e1000_buffer) * tx_ring->count;
+ size = sizeof(struct e1000_tx_buffer) * tx_ring->count;
memset(tx_ring->buffer_info, 0, size);
/* Zero out the descriptor ring */
@@ -2053,6 +2057,28 @@ void e1000_free_all_rx_resources(struct e1000_adapter *adapter)
e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
}
+#define E1000_HEADROOM (NET_SKB_PAD + NET_IP_ALIGN)
+static unsigned int e1000_frag_len(const struct e1000_adapter *a)
+{
+ return SKB_DATA_ALIGN(a->rx_buffer_len + E1000_HEADROOM) +
+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
+}
+
+static void *e1000_alloc_frag(const struct e1000_adapter *a)
+{
+ unsigned int len = e1000_frag_len(a);
+ u8 *data = netdev_alloc_frag(len);
+
+ if (likely(data))
+ data += E1000_HEADROOM;
+ return data;
+}
+
+static void e1000_free_frag(const void *data)
+{
+ put_page(virt_to_head_page(data));
+}
+
/**
* e1000_clean_rx_ring - Free Rx Buffers per Queue
* @adapter: board private structure
@@ -2062,44 +2088,42 @@ static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring)
{
struct e1000_hw *hw = &adapter->hw;
- struct e1000_buffer *buffer_info;
+ struct e1000_rx_buffer *buffer_info;
struct pci_dev *pdev = adapter->pdev;
unsigned long size;
unsigned int i;
- /* Free all the Rx ring sk_buffs */
+ /* Free all the Rx netfrags */
for (i = 0; i < rx_ring->count; i++) {
buffer_info = &rx_ring->buffer_info[i];
- if (buffer_info->dma &&
- adapter->clean_rx == e1000_clean_rx_irq) {
- dma_unmap_single(&pdev->dev, buffer_info->dma,
- buffer_info->length,
- DMA_FROM_DEVICE);
- } else if (buffer_info->dma &&
- adapter->clean_rx == e1000_clean_jumbo_rx_irq) {
- dma_unmap_page(&pdev->dev, buffer_info->dma,
- buffer_info->length,
- DMA_FROM_DEVICE);
+ if (adapter->clean_rx == e1000_clean_rx_irq) {
+ if (buffer_info->dma)
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
+ adapter->rx_buffer_len,
+ DMA_FROM_DEVICE);
+ if (buffer_info->rxbuf.data) {
+ e1000_free_frag(buffer_info->rxbuf.data);
+ buffer_info->rxbuf.data = NULL;
+ }
+ } else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) {
+ if (buffer_info->dma)
+ dma_unmap_page(&pdev->dev, buffer_info->dma,
+ adapter->rx_buffer_len,
+ DMA_FROM_DEVICE);
+ if (buffer_info->rxbuf.page) {
+ put_page(buffer_info->rxbuf.page);
+ buffer_info->rxbuf.page = NULL;
+ }
}
buffer_info->dma = 0;
- if (buffer_info->page) {
- put_page(buffer_info->page);
- buffer_info->page = NULL;
- }
- if (buffer_info->skb) {
- dev_kfree_skb(buffer_info->skb);
- buffer_info->skb = NULL;
- }
}
/* there also may be some cached data from a chained receive */
- if (rx_ring->rx_skb_top) {
- dev_kfree_skb(rx_ring->rx_skb_top);
- rx_ring->rx_skb_top = NULL;
- }
+ napi_free_frags(&adapter->napi);
+ rx_ring->rx_skb_top = NULL;
- size = sizeof(struct e1000_buffer) * rx_ring->count;
+ size = sizeof(struct e1000_rx_buffer) * rx_ring->count;
memset(rx_ring->buffer_info, 0, size);
/* Zero out the descriptor ring */
@@ -2674,10 +2698,11 @@ set_itr_now:
#define E1000_TX_FLAGS_VLAN_SHIFT 16
static int e1000_tso(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
+ struct e1000_tx_ring *tx_ring, struct sk_buff *skb,
+ __be16 protocol)
{
struct e1000_context_desc *context_desc;
- struct e1000_buffer *buffer_info;
+ struct e1000_tx_buffer *buffer_info;
unsigned int i;
u32 cmd_length = 0;
u16 ipcse = 0, tucse, mss;
@@ -2692,7 +2717,7 @@ static int e1000_tso(struct e1000_adapter *adapter,
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
mss = skb_shinfo(skb)->gso_size;
- if (skb->protocol == htons(ETH_P_IP)) {
+ if (protocol == htons(ETH_P_IP)) {
struct iphdr *iph = ip_hdr(skb);
iph->tot_len = 0;
iph->check = 0;
@@ -2702,7 +2727,7 @@ static int e1000_tso(struct e1000_adapter *adapter,
0);
cmd_length = E1000_TXD_CMD_IP;
ipcse = skb_transport_offset(skb) - 1;
- } else if (skb->protocol == htons(ETH_P_IPV6)) {
+ } else if (skb_is_gso_v6(skb)) {
ipv6_hdr(skb)->payload_len = 0;
tcp_hdr(skb)->check =
~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
@@ -2745,10 +2770,11 @@ static int e1000_tso(struct e1000_adapter *adapter,
}
static bool e1000_tx_csum(struct e1000_adapter *adapter,
- struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
+ struct e1000_tx_ring *tx_ring, struct sk_buff *skb,
+ __be16 protocol)
{
struct e1000_context_desc *context_desc;
- struct e1000_buffer *buffer_info;
+ struct e1000_tx_buffer *buffer_info;
unsigned int i;
u8 css;
u32 cmd_len = E1000_TXD_CMD_DEXT;
@@ -2756,7 +2782,7 @@ static bool e1000_tx_csum(struct e1000_adapter *adapter,
if (skb->ip_summed != CHECKSUM_PARTIAL)
return false;
- switch (skb->protocol) {
+ switch (protocol) {
case cpu_to_be16(ETH_P_IP):
if (ip_hdr(skb)->protocol == IPPROTO_TCP)
cmd_len |= E1000_TXD_CMD_TCP;
@@ -2807,7 +2833,7 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
{
struct e1000_hw *hw = &adapter->hw;
struct pci_dev *pdev = adapter->pdev;
- struct e1000_buffer *buffer_info;
+ struct e1000_tx_buffer *buffer_info;
unsigned int len = skb_headlen(skb);
unsigned int offset = 0, size, count = 0, i;
unsigned int f, bytecount, segs;
@@ -2953,7 +2979,7 @@ static void e1000_tx_queue(struct e1000_adapter *adapter,
{
struct e1000_hw *hw = &adapter->hw;
struct e1000_tx_desc *tx_desc = NULL;
- struct e1000_buffer *buffer_info;
+ struct e1000_tx_buffer *buffer_info;
u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
unsigned int i;
@@ -3097,6 +3123,7 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
int count = 0;
int tso;
unsigned int f;
+ __be16 protocol = vlan_get_protocol(skb);
/* This goes back to the question of how to logically map a Tx queue
* to a flow. Right now, performance is impacted slightly negatively
@@ -3210,7 +3237,7 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
first = tx_ring->next_to_use;
- tso = e1000_tso(adapter, tx_ring, skb);
+ tso = e1000_tso(adapter, tx_ring, skb, protocol);
if (tso < 0) {
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
@@ -3220,10 +3247,10 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
if (likely(hw->mac_type != e1000_82544))
tx_ring->last_tx_tso = true;
tx_flags |= E1000_TX_FLAGS_TSO;
- } else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
+ } else if (likely(e1000_tx_csum(adapter, tx_ring, skb, protocol)))
tx_flags |= E1000_TX_FLAGS_CSUM;
- if (likely(skb->protocol == htons(ETH_P_IP)))
+ if (protocol == htons(ETH_P_IP))
tx_flags |= E1000_TX_FLAGS_IPV4;
if (unlikely(skb->no_fcs))
@@ -3370,7 +3397,7 @@ static void e1000_dump(struct e1000_adapter *adapter)
for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
struct e1000_tx_desc *tx_desc = E1000_TX_DESC(*tx_ring, i);
- struct e1000_buffer *buffer_info = &tx_ring->buffer_info[i];
+ struct e1000_tx_buffer *buffer_info = &tx_ring->buffer_info[i];
struct my_u { __le64 a; __le64 b; };
struct my_u *u = (struct my_u *)tx_desc;
const char *type;
@@ -3412,7 +3439,7 @@ rx_ring_summary:
for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) {
struct e1000_rx_desc *rx_desc = E1000_RX_DESC(*rx_ring, i);
- struct e1000_buffer *buffer_info = &rx_ring->buffer_info[i];
+ struct e1000_rx_buffer *buffer_info = &rx_ring->buffer_info[i];
struct my_u { __le64 a; __le64 b; };
struct my_u *u = (struct my_u *)rx_desc;
const char *type;
@@ -3426,7 +3453,7 @@ rx_ring_summary:
pr_info("R[0x%03X] %016llX %016llX %016llX %p %s\n",
i, le64_to_cpu(u->a), le64_to_cpu(u->b),
- (u64)buffer_info->dma, buffer_info->skb, type);
+ (u64)buffer_info->dma, buffer_info->rxbuf.data, type);
} /* for */
/* dump the descriptor caches */
@@ -3808,7 +3835,7 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
struct e1000_tx_desc *tx_desc, *eop_desc;
- struct e1000_buffer *buffer_info;
+ struct e1000_tx_buffer *buffer_info;
unsigned int i, eop;
unsigned int count = 0;
unsigned int total_tx_bytes=0, total_tx_packets=0;
@@ -3946,12 +3973,12 @@ static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
}
/**
- * e1000_consume_page - helper function
+ * e1000_consume_page - helper function for jumbo Rx path
**/
-static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb,
+static void e1000_consume_page(struct e1000_rx_buffer *bi, struct sk_buff *skb,
u16 length)
{
- bi->page = NULL;
+ bi->rxbuf.page = NULL;
skb->len += length;
skb->data_len += length;
skb->truesize += PAGE_SIZE;
@@ -3978,6 +4005,113 @@ static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status,
}
/**
+ * e1000_tbi_adjust_stats
+ * @hw: Struct containing variables accessed by shared code
+ * @frame_len: The length of the frame in question
+ * @mac_addr: The Ethernet destination address of the frame in question
+ *
+ * Adjusts the statistic counters when a frame is accepted by TBI_ACCEPT
+ */
+static void e1000_tbi_adjust_stats(struct e1000_hw *hw,
+ struct e1000_hw_stats *stats,
+ u32 frame_len, const u8 *mac_addr)
+{
+ u64 carry_bit;
+
+ /* First adjust the frame length. */
+ frame_len--;
+ /* We need to adjust the statistics counters, since the hardware
+ * counters overcount this packet as a CRC error and undercount
+ * the packet as a good packet
+ */
+ /* This packet should not be counted as a CRC error. */
+ stats->crcerrs--;
+ /* This packet does count as a Good Packet Received. */
+ stats->gprc++;
+
+ /* Adjust the Good Octets received counters */
+ carry_bit = 0x80000000 & stats->gorcl;
+ stats->gorcl += frame_len;
+ /* If the high bit of Gorcl (the low 32 bits of the Good Octets
+ * Received Count) was one before the addition,
+ * AND it is zero after, then we lost the carry out,
+ * need to add one to Gorch (Good Octets Received Count High).
+ * This could be simplified if all environments supported
+ * 64-bit integers.
+ */
+ if (carry_bit && ((stats->gorcl & 0x80000000) == 0))
+ stats->gorch++;
+ /* Is this a broadcast or multicast? Check broadcast first,
+ * since the test for a multicast frame will test positive on
+ * a broadcast frame.
+ */
+ if (is_broadcast_ether_addr(mac_addr))
+ stats->bprc++;
+ else if (is_multicast_ether_addr(mac_addr))
+ stats->mprc++;
+
+ if (frame_len == hw->max_frame_size) {
+ /* In this case, the hardware has overcounted the number of
+ * oversize frames.
+ */
+ if (stats->roc > 0)
+ stats->roc--;
+ }
+
+ /* Adjust the bin counters when the extra byte put the frame in the
+ * wrong bin. Remember that the frame_len was adjusted above.
+ */
+ if (frame_len == 64) {
+ stats->prc64++;
+ stats->prc127--;
+ } else if (frame_len == 127) {
+ stats->prc127++;
+ stats->prc255--;
+ } else if (frame_len == 255) {
+ stats->prc255++;
+ stats->prc511--;
+ } else if (frame_len == 511) {
+ stats->prc511++;
+ stats->prc1023--;
+ } else if (frame_len == 1023) {
+ stats->prc1023++;
+ stats->prc1522--;
+ } else if (frame_len == 1522) {
+ stats->prc1522++;
+ }
+}
+
+static bool e1000_tbi_should_accept(struct e1000_adapter *adapter,
+ u8 status, u8 errors,
+ u32 length, const u8 *data)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u8 last_byte = *(data + length - 1);
+
+ if (TBI_ACCEPT(hw, status, errors, length, last_byte)) {
+ unsigned long irq_flags;
+
+ spin_lock_irqsave(&adapter->stats_lock, irq_flags);
+ e1000_tbi_adjust_stats(hw, &adapter->stats, length, data);
+ spin_unlock_irqrestore(&adapter->stats_lock, irq_flags);
+
+ return true;
+ }
+
+ return false;
+}
+
+static struct sk_buff *e1000_alloc_rx_skb(struct e1000_adapter *adapter,
+ unsigned int bufsz)
+{
+ struct sk_buff *skb = netdev_alloc_skb_ip_align(adapter->netdev, bufsz);
+
+ if (unlikely(!skb))
+ adapter->alloc_rx_buff_failed++;
+ return skb;
+}
+
+/**
* e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy
* @adapter: board private structure
* @rx_ring: ring to clean
@@ -3991,12 +4125,10 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring,
int *work_done, int work_to_do)
{
- struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct e1000_rx_desc *rx_desc, *next_rxd;
- struct e1000_buffer *buffer_info, *next_buffer;
- unsigned long irq_flags;
+ struct e1000_rx_buffer *buffer_info, *next_buffer;
u32 length;
unsigned int i;
int cleaned_count = 0;
@@ -4017,8 +4149,6 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
rmb(); /* read descriptor and rx_buffer_info after status DD */
status = rx_desc->status;
- skb = buffer_info->skb;
- buffer_info->skb = NULL;
if (++i == rx_ring->count) i = 0;
next_rxd = E1000_RX_DESC(*rx_ring, i);
@@ -4029,7 +4159,7 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
cleaned = true;
cleaned_count++;
dma_unmap_page(&pdev->dev, buffer_info->dma,
- buffer_info->length, DMA_FROM_DEVICE);
+ adapter->rx_buffer_len, DMA_FROM_DEVICE);
buffer_info->dma = 0;
length = le16_to_cpu(rx_desc->length);
@@ -4037,25 +4167,15 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
/* errors is only valid for DD + EOP descriptors */
if (unlikely((status & E1000_RXD_STAT_EOP) &&
(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
- u8 *mapped;
- u8 last_byte;
-
- mapped = page_address(buffer_info->page);
- last_byte = *(mapped + length - 1);
- if (TBI_ACCEPT(hw, status, rx_desc->errors, length,
- last_byte)) {
- spin_lock_irqsave(&adapter->stats_lock,
- irq_flags);
- e1000_tbi_adjust_stats(hw, &adapter->stats,
- length, mapped);
- spin_unlock_irqrestore(&adapter->stats_lock,
- irq_flags);
+ u8 *mapped = page_address(buffer_info->rxbuf.page);
+
+ if (e1000_tbi_should_accept(adapter, status,
+ rx_desc->errors,
+ length, mapped)) {
length--;
+ } else if (netdev->features & NETIF_F_RXALL) {
+ goto process_skb;
} else {
- if (netdev->features & NETIF_F_RXALL)
- goto process_skb;
- /* recycle both page and skb */
- buffer_info->skb = skb;
/* an error means any chain goes out the window
* too
*/
@@ -4072,16 +4192,18 @@ process_skb:
/* this descriptor is only the beginning (or middle) */
if (!rxtop) {
/* this is the beginning of a chain */
- rxtop = skb;
- skb_fill_page_desc(rxtop, 0, buffer_info->page,
+ rxtop = napi_get_frags(&adapter->napi);
+ if (!rxtop)
+ break;
+
+ skb_fill_page_desc(rxtop, 0,
+ buffer_info->rxbuf.page,
0, length);
} else {
/* this is the middle of a chain */
skb_fill_page_desc(rxtop,
skb_shinfo(rxtop)->nr_frags,
- buffer_info->page, 0, length);
- /* re-use the skb, only consumed the page */
- buffer_info->skb = skb;
+ buffer_info->rxbuf.page, 0, length);
}
e1000_consume_page(buffer_info, rxtop, length);
goto next_desc;
@@ -4090,32 +4212,51 @@ process_skb:
/* end of the chain */
skb_fill_page_desc(rxtop,
skb_shinfo(rxtop)->nr_frags,
- buffer_info->page, 0, length);
- /* re-use the current skb, we only consumed the
- * page
- */
- buffer_info->skb = skb;
+ buffer_info->rxbuf.page, 0, length);
skb = rxtop;
rxtop = NULL;
e1000_consume_page(buffer_info, skb, length);
} else {
+ struct page *p;
/* no chain, got EOP, this buf is the packet
* copybreak to save the put_page/alloc_page
*/
- if (length <= copybreak &&
- skb_tailroom(skb) >= length) {
+ p = buffer_info->rxbuf.page;
+ if (length <= copybreak) {
u8 *vaddr;
- vaddr = kmap_atomic(buffer_info->page);
+
+ if (likely(!(netdev->features & NETIF_F_RXFCS)))
+ length -= 4;
+ skb = e1000_alloc_rx_skb(adapter,
+ length);
+ if (!skb)
+ break;
+
+ vaddr = kmap_atomic(p);
memcpy(skb_tail_pointer(skb), vaddr,
length);
kunmap_atomic(vaddr);
/* re-use the page, so don't erase
- * buffer_info->page
+ * buffer_info->rxbuf.page
*/
skb_put(skb, length);
+ e1000_rx_checksum(adapter,
+ status | rx_desc->errors << 24,
+ le16_to_cpu(rx_desc->csum), skb);
+
+ total_rx_bytes += skb->len;
+ total_rx_packets++;
+
+ e1000_receive_skb(adapter, status,
+ rx_desc->special, skb);
+ goto next_desc;
} else {
- skb_fill_page_desc(skb, 0,
- buffer_info->page, 0,
+ skb = napi_get_frags(&adapter->napi);
+ if (!skb) {
+ adapter->alloc_rx_buff_failed++;
+ break;
+ }
+ skb_fill_page_desc(skb, 0, p, 0,
length);
e1000_consume_page(buffer_info, skb,
length);
@@ -4134,14 +4275,14 @@ process_skb:
pskb_trim(skb, skb->len - 4);
total_rx_packets++;
- /* eth type trans needs skb->data to point to something */
- if (!pskb_may_pull(skb, ETH_HLEN)) {
- e_err(drv, "pskb_may_pull failed.\n");
- dev_kfree_skb(skb);
- goto next_desc;
+ if (status & E1000_RXD_STAT_VP) {
+ __le16 vlan = rx_desc->special;
+ u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
+
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
}
- e1000_receive_skb(adapter, status, rx_desc->special, skb);
+ napi_gro_frags(&adapter->napi);
next_desc:
rx_desc->status = 0;
@@ -4172,25 +4313,25 @@ next_desc:
/* this should improve performance for small packets with large amounts
* of reassembly being done in the stack
*/
-static void e1000_check_copybreak(struct net_device *netdev,
- struct e1000_buffer *buffer_info,
- u32 length, struct sk_buff **skb)
+static struct sk_buff *e1000_copybreak(struct e1000_adapter *adapter,
+ struct e1000_rx_buffer *buffer_info,
+ u32 length, const void *data)
{
- struct sk_buff *new_skb;
+ struct sk_buff *skb;
if (length > copybreak)
- return;
+ return NULL;
- new_skb = netdev_alloc_skb_ip_align(netdev, length);
- if (!new_skb)
- return;
+ skb = e1000_alloc_rx_skb(adapter, length);
+ if (!skb)
+ return NULL;
+
+ dma_sync_single_for_cpu(&adapter->pdev->dev, buffer_info->dma,
+ length, DMA_FROM_DEVICE);
- skb_copy_to_linear_data_offset(new_skb, -NET_IP_ALIGN,
- (*skb)->data - NET_IP_ALIGN,
- length + NET_IP_ALIGN);
- /* save the skb in buffer_info as good */
- buffer_info->skb = *skb;
- *skb = new_skb;
+ memcpy(skb_put(skb, length), data, length);
+
+ return skb;
}
/**
@@ -4204,12 +4345,10 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring,
int *work_done, int work_to_do)
{
- struct e1000_hw *hw = &adapter->hw;
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct e1000_rx_desc *rx_desc, *next_rxd;
- struct e1000_buffer *buffer_info, *next_buffer;
- unsigned long flags;
+ struct e1000_rx_buffer *buffer_info, *next_buffer;
u32 length;
unsigned int i;
int cleaned_count = 0;
@@ -4222,6 +4361,7 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
while (rx_desc->status & E1000_RXD_STAT_DD) {
struct sk_buff *skb;
+ u8 *data;
u8 status;
if (*work_done >= work_to_do)
@@ -4230,10 +4370,27 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
rmb(); /* read descriptor and rx_buffer_info after status DD */
status = rx_desc->status;
- skb = buffer_info->skb;
- buffer_info->skb = NULL;
+ length = le16_to_cpu(rx_desc->length);
+
+ data = buffer_info->rxbuf.data;
+ prefetch(data);
+ skb = e1000_copybreak(adapter, buffer_info, length, data);
+ if (!skb) {
+ unsigned int frag_len = e1000_frag_len(adapter);
+
+ skb = build_skb(data - E1000_HEADROOM, frag_len);
+ if (!skb) {
+ adapter->alloc_rx_buff_failed++;
+ break;
+ }
- prefetch(skb->data - NET_IP_ALIGN);
+ skb_reserve(skb, E1000_HEADROOM);
+ dma_unmap_single(&pdev->dev, buffer_info->dma,
+ adapter->rx_buffer_len,
+ DMA_FROM_DEVICE);
+ buffer_info->dma = 0;
+ buffer_info->rxbuf.data = NULL;
+ }
if (++i == rx_ring->count) i = 0;
next_rxd = E1000_RX_DESC(*rx_ring, i);
@@ -4243,11 +4400,7 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
cleaned = true;
cleaned_count++;
- dma_unmap_single(&pdev->dev, buffer_info->dma,
- buffer_info->length, DMA_FROM_DEVICE);
- buffer_info->dma = 0;
- length = le16_to_cpu(rx_desc->length);
/* !EOP means multiple descriptors were used to store a single
* packet, if thats the case we need to toss it. In fact, we
* to toss every packet with the EOP bit clear and the next
@@ -4259,29 +4412,22 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
if (adapter->discarding) {
/* All receives must fit into a single buffer */
- e_dbg("Receive packet consumed multiple buffers\n");
- /* recycle */
- buffer_info->skb = skb;
+ netdev_dbg(netdev, "Receive packet consumed multiple buffers\n");
+ dev_kfree_skb(skb);
if (status & E1000_RXD_STAT_EOP)
adapter->discarding = false;
goto next_desc;
}
if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
- u8 last_byte = *(skb->data + length - 1);
- if (TBI_ACCEPT(hw, status, rx_desc->errors, length,
- last_byte)) {
- spin_lock_irqsave(&adapter->stats_lock, flags);
- e1000_tbi_adjust_stats(hw, &adapter->stats,
- length, skb->data);
- spin_unlock_irqrestore(&adapter->stats_lock,
- flags);
+ if (e1000_tbi_should_accept(adapter, status,
+ rx_desc->errors,
+ length, data)) {
length--;
+ } else if (netdev->features & NETIF_F_RXALL) {
+ goto process_skb;
} else {
- if (netdev->features & NETIF_F_RXALL)
- goto process_skb;
- /* recycle */
- buffer_info->skb = skb;
+ dev_kfree_skb(skb);
goto next_desc;
}
}
@@ -4296,9 +4442,10 @@ process_skb:
*/
length -= 4;
- e1000_check_copybreak(netdev, buffer_info, length, &skb);
-
- skb_put(skb, length);
+ if (buffer_info->rxbuf.data == NULL)
+ skb_put(skb, length);
+ else /* copybreak skb */
+ skb_trim(skb, length);
/* Receive Checksum Offload */
e1000_rx_checksum(adapter,
@@ -4344,38 +4491,19 @@ static void
e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
struct e1000_rx_ring *rx_ring, int cleaned_count)
{
- struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct e1000_rx_desc *rx_desc;
- struct e1000_buffer *buffer_info;
- struct sk_buff *skb;
+ struct e1000_rx_buffer *buffer_info;
unsigned int i;
- unsigned int bufsz = 256 - 16 /*for skb_reserve */ ;
i = rx_ring->next_to_use;
buffer_info = &rx_ring->buffer_info[i];
while (cleaned_count--) {
- skb = buffer_info->skb;
- if (skb) {
- skb_trim(skb, 0);
- goto check_page;
- }
-
- skb = netdev_alloc_skb_ip_align(netdev, bufsz);
- if (unlikely(!skb)) {
- /* Better luck next round */
- adapter->alloc_rx_buff_failed++;
- break;
- }
-
- buffer_info->skb = skb;
- buffer_info->length = adapter->rx_buffer_len;
-check_page:
/* allocate a new page if necessary */
- if (!buffer_info->page) {
- buffer_info->page = alloc_page(GFP_ATOMIC);
- if (unlikely(!buffer_info->page)) {
+ if (!buffer_info->rxbuf.page) {
+ buffer_info->rxbuf.page = alloc_page(GFP_ATOMIC);
+ if (unlikely(!buffer_info->rxbuf.page)) {
adapter->alloc_rx_buff_failed++;
break;
}
@@ -4383,17 +4511,15 @@ check_page:
if (!buffer_info->dma) {
buffer_info->dma = dma_map_page(&pdev->dev,
- buffer_info->page, 0,
- buffer_info->length,
+ buffer_info->rxbuf.page, 0,
+ adapter->rx_buffer_len,
DMA_FROM_DEVICE);
if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
- put_page(buffer_info->page);
- dev_kfree_skb(skb);
- buffer_info->page = NULL;
- buffer_info->skb = NULL;
+ put_page(buffer_info->rxbuf.page);
+ buffer_info->rxbuf.page = NULL;
buffer_info->dma = 0;
adapter->alloc_rx_buff_failed++;
- break; /* while !buffer_info->skb */
+ break;
}
}
@@ -4429,11 +4555,9 @@ static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
int cleaned_count)
{
struct e1000_hw *hw = &adapter->hw;
- struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct e1000_rx_desc *rx_desc;
- struct e1000_buffer *buffer_info;
- struct sk_buff *skb;
+ struct e1000_rx_buffer *buffer_info;
unsigned int i;
unsigned int bufsz = adapter->rx_buffer_len;
@@ -4441,57 +4565,52 @@ static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
buffer_info = &rx_ring->buffer_info[i];
while (cleaned_count--) {
- skb = buffer_info->skb;
- if (skb) {
- skb_trim(skb, 0);
- goto map_skb;
- }
+ void *data;
- skb = netdev_alloc_skb_ip_align(netdev, bufsz);
- if (unlikely(!skb)) {
+ if (buffer_info->rxbuf.data)
+ goto skip;
+
+ data = e1000_alloc_frag(adapter);
+ if (!data) {
/* Better luck next round */
adapter->alloc_rx_buff_failed++;
break;
}
/* Fix for errata 23, can't cross 64kB boundary */
- if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
- struct sk_buff *oldskb = skb;
+ if (!e1000_check_64k_bound(adapter, data, bufsz)) {
+ void *olddata = data;
e_err(rx_err, "skb align check failed: %u bytes at "
- "%p\n", bufsz, skb->data);
+ "%p\n", bufsz, data);
/* Try again, without freeing the previous */
- skb = netdev_alloc_skb_ip_align(netdev, bufsz);
+ data = e1000_alloc_frag(adapter);
/* Failed allocation, critical failure */
- if (!skb) {
- dev_kfree_skb(oldskb);
+ if (!data) {
+ e1000_free_frag(olddata);
adapter->alloc_rx_buff_failed++;
break;
}
- if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
+ if (!e1000_check_64k_bound(adapter, data, bufsz)) {
/* give up */
- dev_kfree_skb(skb);
- dev_kfree_skb(oldskb);
+ e1000_free_frag(data);
+ e1000_free_frag(olddata);
adapter->alloc_rx_buff_failed++;
- break; /* while !buffer_info->skb */
+ break;
}
/* Use new allocation */
- dev_kfree_skb(oldskb);
+ e1000_free_frag(olddata);
}
- buffer_info->skb = skb;
- buffer_info->length = adapter->rx_buffer_len;
-map_skb:
buffer_info->dma = dma_map_single(&pdev->dev,
- skb->data,
- buffer_info->length,
+ data,
+ adapter->rx_buffer_len,
DMA_FROM_DEVICE);
if (dma_mapping_error(&pdev->dev, buffer_info->dma)) {
- dev_kfree_skb(skb);
- buffer_info->skb = NULL;
+ e1000_free_frag(data);
buffer_info->dma = 0;
adapter->alloc_rx_buff_failed++;
- break; /* while !buffer_info->skb */
+ break;
}
/* XXX if it was allocated cleanly it will never map to a
@@ -4505,17 +4624,20 @@ map_skb:
e_err(rx_err, "dma align check failed: %u bytes at "
"%p\n", adapter->rx_buffer_len,
(void *)(unsigned long)buffer_info->dma);
- dev_kfree_skb(skb);
- buffer_info->skb = NULL;
dma_unmap_single(&pdev->dev, buffer_info->dma,
adapter->rx_buffer_len,
DMA_FROM_DEVICE);
+
+ e1000_free_frag(data);
+ buffer_info->rxbuf.data = NULL;
buffer_info->dma = 0;
adapter->alloc_rx_buff_failed++;
- break; /* while !buffer_info->skb */
+ break;
}
+ buffer_info->rxbuf.data = data;
+ skip:
rx_desc = E1000_RX_DESC(*rx_ring, i);
rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-04-01 17:28:56 +0000