"leng ntw timestamp bi->skb\n");
for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
- tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
+ tx_desc = IXGBE_TX_DESC(tx_ring, i);
tx_buffer_info = &tx_ring->tx_buffer_info[i];
u0 = (struct my_u0 *)tx_desc;
pr_info("T [0x%03X] %016llX %016llX %016llX"
for (i = 0; i < rx_ring->count; i++) {
rx_buffer_info = &rx_ring->rx_buffer_info[i];
- rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
+ rx_desc = IXGBE_RX_DESC(rx_ring, i);
u0 = (struct my_u0 *)rx_desc;
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
if (staterr & IXGBE_RXD_STAT_DD) {
u16 i = tx_ring->next_to_clean;
tx_buffer = &tx_ring->tx_buffer_info[i];
- tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
+ tx_desc = IXGBE_TX_DESC(tx_ring, i);
for (; budget; budget--) {
union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch;
i = 0;
tx_buffer = tx_ring->tx_buffer_info;
- tx_desc = IXGBE_TX_DESC_ADV(tx_ring, 0);
+ tx_desc = IXGBE_TX_DESC(tx_ring, 0);
}
} while (eop_desc);
if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) {
/* schedule immediate reset if we believe we hung */
struct ixgbe_hw *hw = &adapter->hw;
- tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
+ tx_desc = IXGBE_TX_DESC(tx_ring, i);
e_err(drv, "Detected Tx Unit Hang\n"
" Tx Queue <%d>\n"
" TDH, TDT <%x>, <%x>\n"
}
#endif /* CONFIG_IXGBE_DCA */
-static inline void ixgbe_rx_hash(union ixgbe_adv_rx_desc *rx_desc,
+static inline void ixgbe_rx_hash(struct ixgbe_ring *ring,
+ union ixgbe_adv_rx_desc *rx_desc,
struct sk_buff *skb)
{
- skb->rxhash = le32_to_cpu(rx_desc->wb.lower.hi_dword.rss);
+ if (ring->netdev->features & NETIF_F_RXHASH)
+ skb->rxhash = le32_to_cpu(rx_desc->wb.lower.hi_dword.rss);
}
/**
}
/**
- * ixgbe_receive_skb - Send a completed packet up the stack
- * @adapter: board private structure
- * @skb: packet to send up
- * @status: hardware indication of status of receive
- * @rx_ring: rx descriptor ring (for a specific queue) to setup
- * @rx_desc: rx descriptor
- **/
-static void ixgbe_receive_skb(struct ixgbe_q_vector *q_vector,
- struct sk_buff *skb, u8 status,
- struct ixgbe_ring *ring,
- union ixgbe_adv_rx_desc *rx_desc)
-{
- struct ixgbe_adapter *adapter = q_vector->adapter;
- struct napi_struct *napi = &q_vector->napi;
- bool is_vlan = (status & IXGBE_RXD_STAT_VP);
- u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
-
- if (is_vlan && (tag & VLAN_VID_MASK))
- __vlan_hwaccel_put_tag(skb, tag);
-
- if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
- napi_gro_receive(napi, skb);
- else
- netif_rx(skb);
-}
-
-/**
* ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
- * @adapter: address of board private structure
- * @status_err: hardware indication of status of receive
+ * @ring: structure containing ring specific data
+ * @rx_desc: current Rx descriptor being processed
* @skb: skb currently being received and modified
- * @status_err: status error value of last descriptor in packet
**/
-static inline void ixgbe_rx_checksum(struct ixgbe_adapter *adapter,
+static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring,
union ixgbe_adv_rx_desc *rx_desc,
- struct sk_buff *skb,
- u32 status_err)
+ struct sk_buff *skb)
{
- skb->ip_summed = CHECKSUM_NONE;
+ skb_checksum_none_assert(skb);
/* Rx csum disabled */
- if (!(adapter->flags & IXGBE_FLAG_RX_CSUM_ENABLED))
+ if (!(ring->netdev->features & NETIF_F_RXCSUM))
return;
/* if IP and error */
- if ((status_err & IXGBE_RXD_STAT_IPCS) &&
- (status_err & IXGBE_RXDADV_ERR_IPE)) {
- adapter->hw_csum_rx_error++;
+ if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) &&
+ ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) {
+ ring->rx_stats.csum_err++;
return;
}
- if (!(status_err & IXGBE_RXD_STAT_L4CS))
+ if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS))
return;
- if (status_err & IXGBE_RXDADV_ERR_TCPE) {
+ if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) {
u16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
/*
* 82599 errata, UDP frames with a 0 checksum can be marked as
* checksum errors.
*/
- if ((pkt_info & IXGBE_RXDADV_PKTTYPE_UDP) &&
- (adapter->hw.mac.type == ixgbe_mac_82599EB))
+ if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) &&
+ test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state))
return;
- adapter->hw_csum_rx_error++;
+ ring->rx_stats.csum_err++;
return;
}
static inline void ixgbe_release_rx_desc(struct ixgbe_ring *rx_ring, u32 val)
{
+ rx_ring->next_to_use = val;
/*
* Force memory writes to complete before letting h/w
* know there are new descriptors to fetch. (Only
writel(val, rx_ring->tail);
}
+static bool ixgbe_alloc_mapped_skb(struct ixgbe_ring *rx_ring,
+ struct ixgbe_rx_buffer *bi)
+{
+ struct sk_buff *skb = bi->skb;
+ dma_addr_t dma = bi->dma;
+
+ if (dma)
+ return true;
+
+ if (likely(!skb)) {
+ skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
+ rx_ring->rx_buf_len);
+ bi->skb = skb;
+ if (!skb) {
+ rx_ring->rx_stats.alloc_rx_buff_failed++;
+ return false;
+ }
+ }
+
+ dma = dma_map_single(rx_ring->dev, skb->data,
+ rx_ring->rx_buf_len, DMA_FROM_DEVICE);
+
+ if (dma_mapping_error(rx_ring->dev, dma)) {
+ rx_ring->rx_stats.alloc_rx_buff_failed++;
+ return false;
+ }
+
+ bi->dma = dma;
+ return true;
+}
+
+static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring,
+ struct ixgbe_rx_buffer *bi)
+{
+ struct page *page = bi->page;
+ dma_addr_t page_dma = bi->page_dma;
+ unsigned int page_offset = bi->page_offset ^ (PAGE_SIZE / 2);
+
+ if (page_dma)
+ return true;
+
+ if (!page) {
+ page = alloc_page(GFP_ATOMIC | __GFP_COLD);
+ bi->page = page;
+ if (unlikely(!page)) {
+ rx_ring->rx_stats.alloc_rx_page_failed++;
+ return false;
+ }
+ }
+
+ page_dma = dma_map_page(rx_ring->dev, page,
+ page_offset, PAGE_SIZE / 2,
+ DMA_FROM_DEVICE);
+
+ if (dma_mapping_error(rx_ring->dev, page_dma)) {
+ rx_ring->rx_stats.alloc_rx_page_failed++;
+ return false;
+ }
+
+ bi->page_dma = page_dma;
+ bi->page_offset = page_offset;
+ return true;
+}
+
/**
- * ixgbe_alloc_rx_buffers - Replace used receive buffers; packet split
+ * ixgbe_alloc_rx_buffers - Replace used receive buffers
* @rx_ring: ring to place buffers on
* @cleaned_count: number of buffers to replace
**/
{
union ixgbe_adv_rx_desc *rx_desc;
struct ixgbe_rx_buffer *bi;
- struct sk_buff *skb;
u16 i = rx_ring->next_to_use;
- /* do nothing if no valid netdev defined */
- if (!rx_ring->netdev)
+ /* nothing to do or no valid netdev defined */
+ if (!cleaned_count || !rx_ring->netdev)
return;
- while (cleaned_count--) {
- rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
- bi = &rx_ring->rx_buffer_info[i];
- skb = bi->skb;
-
- if (!skb) {
- skb = netdev_alloc_skb_ip_align(rx_ring->netdev,
- rx_ring->rx_buf_len);
- if (!skb) {
- rx_ring->rx_stats.alloc_rx_buff_failed++;
- goto no_buffers;
- }
- /* initialize queue mapping */
- skb_record_rx_queue(skb, rx_ring->queue_index);
- bi->skb = skb;
- }
+ rx_desc = IXGBE_RX_DESC(rx_ring, i);
+ bi = &rx_ring->rx_buffer_info[i];
+ i -= rx_ring->count;
- if (!bi->dma) {
- bi->dma = dma_map_single(rx_ring->dev,
- skb->data,
- rx_ring->rx_buf_len,
- DMA_FROM_DEVICE);
- if (dma_mapping_error(rx_ring->dev, bi->dma)) {
- rx_ring->rx_stats.alloc_rx_buff_failed++;
- bi->dma = 0;
- goto no_buffers;
- }
- }
+ while (cleaned_count--) {
+ if (!ixgbe_alloc_mapped_skb(rx_ring, bi))
+ break;
+ /* Refresh the desc even if buffer_addrs didn't change
+ * because each write-back erases this info. */
if (ring_is_ps_enabled(rx_ring)) {
- if (!bi->page) {
- bi->page = alloc_page(GFP_ATOMIC | __GFP_COLD);
- if (!bi->page) {
- rx_ring->rx_stats.alloc_rx_page_failed++;
- goto no_buffers;
- }
- }
+ rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
- if (!bi->page_dma) {
- /* use a half page if we're re-using */
- bi->page_offset ^= PAGE_SIZE / 2;
- bi->page_dma = dma_map_page(rx_ring->dev,
- bi->page,
- bi->page_offset,
- PAGE_SIZE / 2,
- DMA_FROM_DEVICE);
- if (dma_mapping_error(rx_ring->dev,
- bi->page_dma)) {
- rx_ring->rx_stats.alloc_rx_page_failed++;
- bi->page_dma = 0;
- goto no_buffers;
- }
- }
+ if (!ixgbe_alloc_mapped_page(rx_ring, bi))
+ break;
- /* Refresh the desc even if buffer_addrs didn't change
- * because each write-back erases this info. */
rx_desc->read.pkt_addr = cpu_to_le64(bi->page_dma);
- rx_desc->read.hdr_addr = cpu_to_le64(bi->dma);
} else {
rx_desc->read.pkt_addr = cpu_to_le64(bi->dma);
- rx_desc->read.hdr_addr = 0;
}
+ rx_desc++;
+ bi++;
i++;
- if (i == rx_ring->count)
- i = 0;
+ if (unlikely(!i)) {
+ rx_desc = IXGBE_RX_DESC(rx_ring, 0);
+ bi = rx_ring->rx_buffer_info;
+ i -= rx_ring->count;
+ }
+
+ /* clear the hdr_addr for the next_to_use descriptor */
+ rx_desc->read.hdr_addr = 0;
}
-no_buffers:
- if (rx_ring->next_to_use != i) {
- rx_ring->next_to_use = i;
+ i += rx_ring->count;
+
+ if (rx_ring->next_to_use != i)
ixgbe_release_rx_desc(rx_ring, i);
- }
}
static inline u16 ixgbe_get_hlen(union ixgbe_adv_rx_desc *rx_desc)
}
/**
- * ixgbe_transform_rsc_queue - change rsc queue into a full packet
- * @skb: pointer to the last skb in the rsc queue
+ * ixgbe_merge_active_tail - merge active tail into lro skb
+ * @tail: pointer to active tail in frag_list
+ *
+ * This function merges the length and data of an active tail into the
+ * skb containing the frag_list. It resets the tail's pointer to the head,
+ * but it leaves the heads pointer to tail intact.
+ **/
+static inline struct sk_buff *ixgbe_merge_active_tail(struct sk_buff *tail)
+{
+ struct sk_buff *head = IXGBE_CB(tail)->head;
+
+ if (!head)
+ return tail;
+
+ head->len += tail->len;
+ head->data_len += tail->len;
+ head->truesize += tail->len;
+
+ IXGBE_CB(tail)->head = NULL;
+
+ return head;
+}
+
+/**
+ * ixgbe_add_active_tail - adds an active tail into the skb frag_list
+ * @head: pointer to the start of the skb
+ * @tail: pointer to active tail to add to frag_list
+ *
+ * This function adds an active tail to the end of the frag list. This tail
+ * will still be receiving data so we cannot yet ad it's stats to the main
+ * skb. That is done via ixgbe_merge_active_tail.
+ **/
+static inline void ixgbe_add_active_tail(struct sk_buff *head,
+ struct sk_buff *tail)
+{
+ struct sk_buff *old_tail = IXGBE_CB(head)->tail;
+
+ if (old_tail) {
+ ixgbe_merge_active_tail(old_tail);
+ old_tail->next = tail;
+ } else {
+ skb_shinfo(head)->frag_list = tail;
+ }
+
+ IXGBE_CB(tail)->head = head;
+ IXGBE_CB(head)->tail = tail;
+}
+
+/**
+ * ixgbe_close_active_frag_list - cleanup pointers on a frag_list skb
+ * @head: pointer to head of an active frag list
+ *
+ * This function will clear the frag_tail_tracker pointer on an active
+ * frag_list and returns true if the pointer was actually set
+ **/
+static inline bool ixgbe_close_active_frag_list(struct sk_buff *head)
+{
+ struct sk_buff *tail = IXGBE_CB(head)->tail;
+
+ if (!tail)
+ return false;
+
+ ixgbe_merge_active_tail(tail);
+
+ IXGBE_CB(head)->tail = NULL;
+
+ return true;
+}
+
+/**
+ * ixgbe_get_headlen - determine size of header for RSC/LRO/GRO/FCOE
+ * @data: pointer to the start of the headers
+ * @max_len: total length of section to find headers in
+ *
+ * This function is meant to determine the length of headers that will
+ * be recognized by hardware for LRO, GRO, and RSC offloads. The main
+ * motivation of doing this is to only perform one pull for IPv4 TCP
+ * packets so that we can do basic things like calculating the gso_size
+ * based on the average data per packet.
+ **/
+static unsigned int ixgbe_get_headlen(unsigned char *data,
+ unsigned int max_len)
+{
+ union {
+ unsigned char *network;
+ /* l2 headers */
+ struct ethhdr *eth;
+ struct vlan_hdr *vlan;
+ /* l3 headers */
+ struct iphdr *ipv4;
+ } hdr;
+ __be16 protocol;
+ u8 nexthdr = 0; /* default to not TCP */
+ u8 hlen;
+
+ /* this should never happen, but better safe than sorry */
+ if (max_len < ETH_HLEN)
+ return max_len;
+
+ /* initialize network frame pointer */
+ hdr.network = data;
+
+ /* set first protocol and move network header forward */
+ protocol = hdr.eth->h_proto;
+ hdr.network += ETH_HLEN;
+
+ /* handle any vlan tag if present */
+ if (protocol == __constant_htons(ETH_P_8021Q)) {
+ if ((hdr.network - data) > (max_len - VLAN_HLEN))
+ return max_len;
+
+ protocol = hdr.vlan->h_vlan_encapsulated_proto;
+ hdr.network += VLAN_HLEN;
+ }
+
+ /* handle L3 protocols */
+ if (protocol == __constant_htons(ETH_P_IP)) {
+ if ((hdr.network - data) > (max_len - sizeof(struct iphdr)))
+ return max_len;
+
+ /* access ihl as a u8 to avoid unaligned access on ia64 */
+ hlen = (hdr.network[0] & 0x0F) << 2;
+
+ /* verify hlen meets minimum size requirements */
+ if (hlen < sizeof(struct iphdr))
+ return hdr.network - data;
+
+ /* record next protocol */
+ nexthdr = hdr.ipv4->protocol;
+ hdr.network += hlen;
+#ifdef CONFIG_FCOE
+ } else if (protocol == __constant_htons(ETH_P_FCOE)) {
+ if ((hdr.network - data) > (max_len - FCOE_HEADER_LEN))
+ return max_len;
+ hdr.network += FCOE_HEADER_LEN;
+#endif
+ } else {
+ return hdr.network - data;
+ }
+
+ /* finally sort out TCP */
+ if (nexthdr == IPPROTO_TCP) {
+ if ((hdr.network - data) > (max_len - sizeof(struct tcphdr)))
+ return max_len;
+
+ /* access doff as a u8 to avoid unaligned access on ia64 */
+ hlen = (hdr.network[12] & 0xF0) >> 2;
+
+ /* verify hlen meets minimum size requirements */
+ if (hlen < sizeof(struct tcphdr))
+ return hdr.network - data;
+
+ hdr.network += hlen;
+ }
+
+ /*
+ * If everything has gone correctly hdr.network should be the
+ * data section of the packet and will be the end of the header.
+ * If not then it probably represents the end of the last recognized
+ * header.
+ */
+ if ((hdr.network - data) < max_len)
+ return hdr.network - data;
+ else
+ return max_len;
+}
+
+static void ixgbe_get_rsc_cnt(struct ixgbe_ring *rx_ring,
+ union ixgbe_adv_rx_desc *rx_desc,
+ struct sk_buff *skb)
+{
+ __le32 rsc_enabled;
+ u32 rsc_cnt;
+
+ if (!ring_is_rsc_enabled(rx_ring))
+ return;
+
+ rsc_enabled = rx_desc->wb.lower.lo_dword.data &
+ cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK);
+
+ /* If this is an RSC frame rsc_cnt should be non-zero */
+ if (!rsc_enabled)
+ return;
+
+ rsc_cnt = le32_to_cpu(rsc_enabled);
+ rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT;
+
+ IXGBE_CB(skb)->append_cnt += rsc_cnt - 1;
+}
+
+static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring,
+ struct sk_buff *skb)
+{
+ u16 hdr_len = ixgbe_get_headlen(skb->data, skb_headlen(skb));
+
+ /* set gso_size to avoid messing up TCP MSS */
+ skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len),
+ IXGBE_CB(skb)->append_cnt);
+}
+
+static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring,
+ struct sk_buff *skb)
+{
+ /* if append_cnt is 0 then frame is not RSC */
+ if (!IXGBE_CB(skb)->append_cnt)
+ return;
+
+ rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt;
+ rx_ring->rx_stats.rsc_flush++;
+
+ ixgbe_set_rsc_gso_size(rx_ring, skb);
+
+ /* gso_size is computed using append_cnt so always clear it last */
+ IXGBE_CB(skb)->append_cnt = 0;
+}
+
+/**
+ * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor
+ * @rx_ring: rx descriptor ring packet is being transacted on
+ * @rx_desc: pointer to the EOP Rx descriptor
+ * @skb: pointer to current skb being populated
*
- * This function changes a queue full of hw rsc buffers into a completed
- * packet. It uses the ->prev pointers to find the first packet and then
- * turns it into the frag list owner.
+ * This function checks the ring, descriptor, and packet information in
+ * order to populate the hash, checksum, VLAN, timestamp, protocol, and
+ * other fields within the skb.
**/
-static inline struct sk_buff *ixgbe_transform_rsc_queue(struct sk_buff *skb)
+static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
+ union ixgbe_adv_rx_desc *rx_desc,
+ struct sk_buff *skb)
{
- unsigned int frag_list_size = 0;
- unsigned int skb_cnt = 1;
+ ixgbe_update_rsc_stats(rx_ring, skb);
+
+ ixgbe_rx_hash(rx_ring, rx_desc, skb);
- while (skb->prev) {
- struct sk_buff *prev = skb->prev;
- frag_list_size += skb->len;
- skb->prev = NULL;
- skb = prev;
- skb_cnt++;
+ ixgbe_rx_checksum(rx_ring, rx_desc, skb);
+
+ if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) {
+ u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan);
+ __vlan_hwaccel_put_tag(skb, vid);
}
- skb_shinfo(skb)->frag_list = skb->next;
- skb->next = NULL;
- skb->len += frag_list_size;
- skb->data_len += frag_list_size;
- skb->truesize += frag_list_size;
- IXGBE_RSC_CB(skb)->skb_cnt = skb_cnt;
+ skb_record_rx_queue(skb, rx_ring->queue_index);
- return skb;
+ skb->protocol = eth_type_trans(skb, rx_ring->netdev);
}
-static inline bool ixgbe_get_rsc_state(union ixgbe_adv_rx_desc *rx_desc)
+static void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector,
+ struct sk_buff *skb)
{
- return !!(le32_to_cpu(rx_desc->wb.lower.lo_dword.data) &
- IXGBE_RXDADV_RSCCNT_MASK);
+ struct ixgbe_adapter *adapter = q_vector->adapter;
+
+ if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
+ napi_gro_receive(&q_vector->napi, skb);
+ else
+ netif_rx(skb);
}
static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
struct ixgbe_ring *rx_ring,
int budget)
{
- struct ixgbe_adapter *adapter = q_vector->adapter;
union ixgbe_adv_rx_desc *rx_desc, *next_rxd;
- struct ixgbe_rx_buffer *rx_buffer_info, *next_buffer;
+ struct ixgbe_rx_buffer *rx_buffer_info;
struct sk_buff *skb;
unsigned int total_rx_bytes = 0, total_rx_packets = 0;
const int current_node = numa_node_id();
#ifdef IXGBE_FCOE
+ struct ixgbe_adapter *adapter = q_vector->adapter;
int ddp_bytes = 0;
#endif /* IXGBE_FCOE */
- u32 staterr;
u16 i;
u16 cleaned_count = 0;
- bool pkt_is_rsc = false;
i = rx_ring->next_to_clean;
- rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
- staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
+ rx_desc = IXGBE_RX_DESC(rx_ring, i);
- while (staterr & IXGBE_RXD_STAT_DD) {
+ while (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_DD)) {
u32 upper_len = 0;
rmb(); /* read descriptor and rx_buffer_info after status DD */
rx_buffer_info->skb = NULL;
prefetch(skb->data);
- if (ring_is_rsc_enabled(rx_ring))
- pkt_is_rsc = ixgbe_get_rsc_state(rx_desc);
-
/* linear means we are building an skb from multiple pages */
if (!skb_is_nonlinear(skb)) {
u16 hlen;
- if (pkt_is_rsc &&
- !(staterr & IXGBE_RXD_STAT_EOP) &&
- !skb->prev) {
- /*
- * When HWRSC is enabled, delay unmapping
- * of the first packet. It carries the
- * header information, HW may still
- * access the header after the writeback.
- * Only unmap it when EOP is reached
- */
- IXGBE_RSC_CB(skb)->delay_unmap = true;
- IXGBE_RSC_CB(skb)->dma = rx_buffer_info->dma;
- } else {
- dma_unmap_single(rx_ring->dev,
- rx_buffer_info->dma,
- rx_ring->rx_buf_len,
- DMA_FROM_DEVICE);
- }
- rx_buffer_info->dma = 0;
-
if (ring_is_ps_enabled(rx_ring)) {
hlen = ixgbe_get_hlen(rx_desc);
upper_len = le16_to_cpu(rx_desc->wb.upper.length);
}
skb_put(skb, hlen);
+
+ /*
+ * Delay unmapping of the first packet. It carries the
+ * header information, HW may still access the header
+ * after writeback. Only unmap it when EOP is reached
+ */
+ if (!IXGBE_CB(skb)->head) {
+ IXGBE_CB(skb)->delay_unmap = true;
+ IXGBE_CB(skb)->dma = rx_buffer_info->dma;
+ } else {
+ skb = ixgbe_merge_active_tail(skb);
+ dma_unmap_single(rx_ring->dev,
+ rx_buffer_info->dma,
+ rx_ring->rx_buf_len,
+ DMA_FROM_DEVICE);
+ }
+ rx_buffer_info->dma = 0;
} else {
/* assume packet split since header is unmapped */
upper_len = le16_to_cpu(rx_desc->wb.upper.length);
skb->truesize += PAGE_SIZE / 2;
}
+ ixgbe_get_rsc_cnt(rx_ring, rx_desc, skb);
+
i++;
if (i == rx_ring->count)
i = 0;
- next_rxd = IXGBE_RX_DESC_ADV(rx_ring, i);
+ next_rxd = IXGBE_RX_DESC(rx_ring, i);
prefetch(next_rxd);
cleaned_count++;
- if (pkt_is_rsc) {
- u32 nextp = (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
- IXGBE_RXDADV_NEXTP_SHIFT;
+ if ((!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))) {
+ struct ixgbe_rx_buffer *next_buffer;
+ u32 nextp;
+
+ if (IXGBE_CB(skb)->append_cnt) {
+ nextp = le32_to_cpu(
+ rx_desc->wb.upper.status_error);
+ nextp >>= IXGBE_RXDADV_NEXTP_SHIFT;
+ } else {
+ nextp = i;
+ }
+
next_buffer = &rx_ring->rx_buffer_info[nextp];
- } else {
- next_buffer = &rx_ring->rx_buffer_info[i];
- }
- if (!(staterr & IXGBE_RXD_STAT_EOP)) {
if (ring_is_ps_enabled(rx_ring)) {
rx_buffer_info->skb = next_buffer->skb;
rx_buffer_info->dma = next_buffer->dma;
next_buffer->skb = skb;
next_buffer->dma = 0;
} else {
- skb->next = next_buffer->skb;
- skb->next->prev = skb;
+ struct sk_buff *next_skb = next_buffer->skb;
+ ixgbe_add_active_tail(skb, next_skb);
+ IXGBE_CB(next_skb)->head = skb;
}
rx_ring->rx_stats.non_eop_descs++;
goto next_desc;
}
- if (skb->prev) {
- skb = ixgbe_transform_rsc_queue(skb);
- /* if we got here without RSC the packet is invalid */
- if (!pkt_is_rsc) {
- __pskb_trim(skb, 0);
- rx_buffer_info->skb = skb;
- goto next_desc;
- }
- }
+ dma_unmap_single(rx_ring->dev,
+ IXGBE_CB(skb)->dma,
+ rx_ring->rx_buf_len,
+ DMA_FROM_DEVICE);
+ IXGBE_CB(skb)->dma = 0;
+ IXGBE_CB(skb)->delay_unmap = false;
- if (ring_is_rsc_enabled(rx_ring)) {
- if (IXGBE_RSC_CB(skb)->delay_unmap) {
- dma_unmap_single(rx_ring->dev,
- IXGBE_RSC_CB(skb)->dma,
- rx_ring->rx_buf_len,
- DMA_FROM_DEVICE);
- IXGBE_RSC_CB(skb)->dma = 0;
- IXGBE_RSC_CB(skb)->delay_unmap = false;
- }
- }
- if (pkt_is_rsc) {
- if (ring_is_ps_enabled(rx_ring))
- rx_ring->rx_stats.rsc_count +=
- skb_shinfo(skb)->nr_frags;
- else
- rx_ring->rx_stats.rsc_count +=
- IXGBE_RSC_CB(skb)->skb_cnt;
- rx_ring->rx_stats.rsc_flush++;
+ if (ixgbe_close_active_frag_list(skb) &&
+ !IXGBE_CB(skb)->append_cnt) {
+ /* if we got here without RSC the packet is invalid */
+ dev_kfree_skb_any(skb);
+ goto next_desc;
}
/* ERR_MASK will only have valid bits if EOP set */
- if (unlikely(staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK)) {
+ if (unlikely(ixgbe_test_staterr(rx_desc,
+ IXGBE_RXDADV_ERR_FRAME_ERR_MASK))) {
dev_kfree_skb_any(skb);
goto next_desc;
}
- ixgbe_rx_checksum(adapter, rx_desc, skb, staterr);
- if (adapter->netdev->features & NETIF_F_RXHASH)
- ixgbe_rx_hash(rx_desc, skb);
-
/* probably a little skewed due to removing CRC */
total_rx_bytes += skb->len;
total_rx_packets++;
- skb->protocol = eth_type_trans(skb, rx_ring->netdev);
+ /* populate checksum, timestamp, VLAN, and protocol */
+ ixgbe_process_skb_fields(rx_ring, rx_desc, skb);
+
#ifdef IXGBE_FCOE
/* if ddp, not passing to ULD unless for FCP_RSP or error */
if (ixgbe_rx_is_fcoe(adapter, rx_desc)) {
- ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb,
- staterr);
+ ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
if (!ddp_bytes) {
dev_kfree_skb_any(skb);
goto next_desc;
}
}
#endif /* IXGBE_FCOE */
- ixgbe_receive_skb(q_vector, skb, staterr, rx_ring, rx_desc);
+ ixgbe_rx_skb(q_vector, skb);
budget--;
next_desc:
- rx_desc->wb.upper.status_error = 0;
-
if (!budget)
break;
/* use prefetched values */
rx_desc = next_rxd;
- staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
}
rx_ring->next_to_clean = i;
if (rx_buffer_info->skb) {
struct sk_buff *skb = rx_buffer_info->skb;
rx_buffer_info->skb = NULL;
- do {
- struct sk_buff *this = skb;
- if (IXGBE_RSC_CB(this)->delay_unmap) {
- dma_unmap_single(dev,
- IXGBE_RSC_CB(this)->dma,
- rx_ring->rx_buf_len,
- DMA_FROM_DEVICE);
- IXGBE_RSC_CB(this)->dma = 0;
- IXGBE_RSC_CB(skb)->delay_unmap = false;
- }
- skb = skb->prev;
- dev_kfree_skb(this);
- } while (skb);
+ /* We need to clean up RSC frag lists */
+ skb = ixgbe_merge_active_tail(skb);
+ ixgbe_close_active_frag_list(skb);
+ if (IXGBE_CB(skb)->delay_unmap) {
+ dma_unmap_single(dev,
+ IXGBE_CB(skb)->dma,
+ rx_ring->rx_buf_len,
+ DMA_FROM_DEVICE);
+ IXGBE_CB(skb)->dma = 0;
+ IXGBE_CB(skb)->delay_unmap = false;
+ }
+ dev_kfree_skb(skb);
}
if (!rx_buffer_info->page)
continue;
ring->dev = &adapter->pdev->dev;
ring->netdev = adapter->netdev;
+ /*
+ * 82599 errata, UDP frames with a 0 checksum can be marked as
+ * checksum errors.
+ */
+ if (adapter->hw.mac.type == ixgbe_mac_82599EB)
+ set_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state);
+
adapter->rx_ring[rx] = ring;
}
return -EIO;
}
- /* enable rx csum by default */
- adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
-
/* get assigned NUMA node */
adapter->node = dev_to_node(&pdev->dev);
u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0;
u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0;
- u64 bytes = 0, packets = 0;
+ u64 bytes = 0, packets = 0, hw_csum_rx_error = 0;
#ifdef IXGBE_FCOE
struct ixgbe_fcoe *fcoe = &adapter->fcoe;
unsigned int cpu;
non_eop_descs += rx_ring->rx_stats.non_eop_descs;
alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed;
alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed;
+ hw_csum_rx_error += rx_ring->rx_stats.csum_err;
bytes += rx_ring->stats.bytes;
packets += rx_ring->stats.packets;
}
adapter->non_eop_descs = non_eop_descs;
adapter->alloc_rx_page_failed = alloc_rx_page_failed;
adapter->alloc_rx_buff_failed = alloc_rx_buff_failed;
+ adapter->hw_csum_rx_error = hw_csum_rx_error;
netdev->stats.rx_bytes = bytes;
netdev->stats.rx_packets = packets;
struct ixgbe_adv_tx_context_desc *context_desc;
u16 i = tx_ring->next_to_use;
- context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
+ context_desc = IXGBE_TX_CTXTDESC(tx_ring, i);
i++;
tx_ring->next_to_use = (i < tx_ring->count) ? i : 0;
cmd_type = ixgbe_tx_cmd_type(tx_flags);
olinfo_status = ixgbe_tx_olinfo_status(tx_flags, paylen);
- tx_desc = IXGBE_TX_DESC_ADV(tx_ring, i);
+ tx_desc = IXGBE_TX_DESC(tx_ring, i);
for (;;) {
while (size > IXGBE_MAX_DATA_PER_TXD) {
tx_desc++;
i++;
if (i == tx_ring->count) {
- tx_desc = IXGBE_TX_DESC_ADV(tx_ring, 0);
+ tx_desc = IXGBE_TX_DESC(tx_ring, 0);
i = 0;
}
}
tx_desc++;
i++;
if (i == tx_ring->count) {
- tx_desc = IXGBE_TX_DESC_ADV(tx_ring, 0);
+ tx_desc = IXGBE_TX_DESC(tx_ring, 0);
i = 0;
}
}
struct ixgbe_adapter *adapter = netdev_priv(netdev);
bool need_reset = false;
- /* If Rx checksum is disabled, then RSC/LRO should also be disabled */
- if (!(data & NETIF_F_RXCSUM))
- adapter->flags &= ~IXGBE_FLAG_RX_CSUM_ENABLED;
- else
- adapter->flags |= IXGBE_FLAG_RX_CSUM_ENABLED;
-
/* Make sure RSC matches LRO, reset if change */
if (!!(data & NETIF_F_LRO) !=
!!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) {
projects / profile / ivi / kernel-adaptation-intel-automotive.git / blobdiff