| /* |
| * QLogic qlcnic NIC Driver |
| * Copyright (c) 2009-2013 QLogic Corporation |
| * |
| * See LICENSE.qlcnic for copyright and licensing details. |
| */ |
| |
| #include <linux/netdevice.h> |
| #include <linux/if_vlan.h> |
| #include <net/ip.h> |
| #include <linux/ipv6.h> |
| |
| #include "qlcnic.h" |
| |
| #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) & 0x07FFF) |
| #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) |
| |
| #define qlcnic_83xx_get_lro_sts_mss(sts) ((sts) & 0xffff) |
| |
| /* 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 |
| |
| #define QLCNIC_TX_POLL_BUDGET 128 |
| #define QLCNIC_TCP_HDR_SIZE 20 |
| #define QLCNIC_TCP_TS_OPTION_SIZE 12 |
| #define QLCNIC_FETCH_RING_ID(handle) ((handle) >> 63) |
| #define QLCNIC_DESC_OWNER_FW cpu_to_le64(STATUS_OWNER_PHANTOM) |
| |
| #define QLCNIC_TCP_TS_HDR_SIZE (QLCNIC_TCP_HDR_SIZE + QLCNIC_TCP_TS_OPTION_SIZE) |
| |
| /* for status field in status_desc */ |
| #define STATUS_CKSUM_LOOP 0 |
| #define STATUS_CKSUM_OK 2 |
| |
| #define qlcnic_83xx_pktln(sts) ((sts >> 32) & 0x3FFF) |
| #define qlcnic_83xx_hndl(sts) ((sts >> 48) & 0x7FFF) |
| #define qlcnic_83xx_csum_status(sts) ((sts >> 39) & 7) |
| #define qlcnic_83xx_opcode(sts) ((sts >> 42) & 0xF) |
| #define qlcnic_83xx_vlan_tag(sts) (((sts) >> 48) & 0xFFFF) |
| #define qlcnic_83xx_lro_pktln(sts) (((sts) >> 32) & 0x3FFF) |
| #define qlcnic_83xx_l2_hdr_off(sts) (((sts) >> 16) & 0xFF) |
| #define qlcnic_83xx_l4_hdr_off(sts) (((sts) >> 24) & 0xFF) |
| #define qlcnic_83xx_pkt_cnt(sts) (((sts) >> 16) & 0x7) |
| #define qlcnic_83xx_is_tstamp(sts) (((sts) >> 40) & 1) |
| #define qlcnic_83xx_is_psh_bit(sts) (((sts) >> 41) & 1) |
| #define qlcnic_83xx_is_ip_align(sts) (((sts) >> 46) & 1) |
| #define qlcnic_83xx_has_vlan_tag(sts) (((sts) >> 47) & 1) |
| |
| struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *, |
| struct qlcnic_host_rds_ring *, u16, u16); |
| |
| inline void qlcnic_83xx_enable_tx_intr(struct qlcnic_adapter *adapter, |
| struct qlcnic_host_tx_ring *tx_ring) |
| { |
| writel(0, tx_ring->crb_intr_mask); |
| } |
| |
| inline void qlcnic_83xx_disable_tx_intr(struct qlcnic_adapter *adapter, |
| struct qlcnic_host_tx_ring *tx_ring) |
| { |
| writel(1, tx_ring->crb_intr_mask); |
| } |
| |
| static inline u8 qlcnic_mac_hash(u64 mac) |
| { |
| return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff)); |
| } |
| |
| static inline u32 qlcnic_get_ref_handle(struct qlcnic_adapter *adapter, |
| u16 handle, u8 ring_id) |
| { |
| if (adapter->pdev->device == PCI_DEVICE_ID_QLOGIC_QLE834X) |
| return handle | (ring_id << 15); |
| else |
| return handle; |
| } |
| |
| static inline int qlcnic_82xx_is_lb_pkt(u64 sts_data) |
| { |
| return (qlcnic_get_sts_status(sts_data) == STATUS_CKSUM_LOOP) ? 1 : 0; |
| } |
| |
| void qlcnic_add_lb_filter(struct qlcnic_adapter *adapter, struct sk_buff *skb, |
| int loopback_pkt, __le16 vlan_id) |
| { |
| struct ethhdr *phdr = (struct ethhdr *)(skb->data); |
| struct qlcnic_filter *fil, *tmp_fil; |
| struct hlist_node *n; |
| struct hlist_head *head; |
| unsigned long time; |
| u64 src_addr = 0; |
| u8 hindex, found = 0, op; |
| int ret; |
| |
| memcpy(&src_addr, phdr->h_source, ETH_ALEN); |
| |
| if (loopback_pkt) { |
| if (adapter->rx_fhash.fnum >= adapter->rx_fhash.fmax) |
| return; |
| |
| hindex = qlcnic_mac_hash(src_addr) & |
| (adapter->fhash.fbucket_size - 1); |
| head = &(adapter->rx_fhash.fhead[hindex]); |
| |
| hlist_for_each_entry_safe(tmp_fil, n, head, fnode) { |
| if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) && |
| tmp_fil->vlan_id == vlan_id) { |
| time = tmp_fil->ftime; |
| if (jiffies > (QLCNIC_READD_AGE * HZ + time)) |
| tmp_fil->ftime = jiffies; |
| return; |
| } |
| } |
| |
| fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC); |
| if (!fil) |
| return; |
| |
| fil->ftime = jiffies; |
| memcpy(fil->faddr, &src_addr, ETH_ALEN); |
| fil->vlan_id = vlan_id; |
| spin_lock(&adapter->rx_mac_learn_lock); |
| hlist_add_head(&(fil->fnode), head); |
| adapter->rx_fhash.fnum++; |
| spin_unlock(&adapter->rx_mac_learn_lock); |
| } else { |
| hindex = qlcnic_mac_hash(src_addr) & |
| (adapter->fhash.fbucket_size - 1); |
| head = &(adapter->rx_fhash.fhead[hindex]); |
| spin_lock(&adapter->rx_mac_learn_lock); |
| hlist_for_each_entry_safe(tmp_fil, n, head, fnode) { |
| if (!memcmp(tmp_fil->faddr, &src_addr, ETH_ALEN) && |
| tmp_fil->vlan_id == vlan_id) { |
| found = 1; |
| break; |
| } |
| } |
| |
| if (!found) { |
| spin_unlock(&adapter->rx_mac_learn_lock); |
| return; |
| } |
| |
| op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD; |
| ret = qlcnic_sre_macaddr_change(adapter, (u8 *)&src_addr, |
| vlan_id, op); |
| if (!ret) { |
| op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL; |
| ret = qlcnic_sre_macaddr_change(adapter, |
| (u8 *)&src_addr, |
| vlan_id, op); |
| if (!ret) { |
| hlist_del(&(tmp_fil->fnode)); |
| adapter->rx_fhash.fnum--; |
| } |
| } |
| spin_unlock(&adapter->rx_mac_learn_lock); |
| } |
| } |
| |
| void qlcnic_82xx_change_filter(struct qlcnic_adapter *adapter, u64 *uaddr, |
| __le16 vlan_id) |
| { |
| struct cmd_desc_type0 *hwdesc; |
| struct qlcnic_nic_req *req; |
| struct qlcnic_mac_req *mac_req; |
| struct qlcnic_vlan_req *vlan_req; |
| struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring; |
| 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 cmd_desc_type0 *first_desc, |
| struct sk_buff *skb) |
| { |
| struct qlcnic_filter *fil, *tmp_fil; |
| struct hlist_node *n; |
| struct hlist_head *head; |
| struct net_device *netdev = adapter->netdev; |
| struct ethhdr *phdr = (struct ethhdr *)(skb->data); |
| 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) { |
| adapter->stats.mac_filter_limit_overrun++; |
| netdev_info(netdev, "Can not add more than %d mac addresses\n", |
| adapter->fhash.fmax); |
| return; |
| } |
| |
| memcpy(&src_addr, phdr->h_source, ETH_ALEN); |
| hindex = qlcnic_mac_hash(src_addr) & (adapter->fhash.fbucket_size - 1); |
| head = &(adapter->fhash.fhead[hindex]); |
| |
| hlist_for_each_entry_safe(tmp_fil, 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); |
| tmp_fil->ftime = jiffies; |
| return; |
| } |
| } |
| |
| fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC); |
| if (!fil) |
| return; |
| |
| qlcnic_change_filter(adapter, &src_addr, vlan_id); |
| 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 l4proto, opcode = 0, hdr_len = 0; |
| u16 flags = 0, vlan_tci = 0; |
| int copied, offset, copy_len, size; |
| 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 (skb_is_gso(skb)) { |
| 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) { |
| size = (int)sizeof(struct cmd_desc_type0) - offset; |
| copy_len = min(size, (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) { |
| 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 i, nr_frags = skb_shinfo(skb)->nr_frags; |
| |
| 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 i, k, frag_count, delta = 0; |
| u32 producer, num_txd; |
| |
| 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 = &tx_ring->desc_head[producer]; |
| 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->drv_mac_learn) |
| qlcnic_send_filter(adapter, 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, |
| u8 ring_id) |
| { |
| struct rcv_desc *pdesc; |
| struct qlcnic_rx_buffer *buffer; |
| int count = 0; |
| uint32_t producer, handle; |
| 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]; |
| handle = qlcnic_get_ref_handle(adapter, |
| buffer->ref_handle, ring_id); |
| pdesc->reference_handle = cpu_to_le16(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, |
| struct qlcnic_host_tx_ring *tx_ring, |
| int budget) |
| { |
| u32 sw_consumer, hw_consumer; |
| int i, done, count = 0; |
| struct qlcnic_cmd_buffer *buffer; |
| struct pci_dev *pdev = adapter->pdev; |
| struct net_device *netdev = adapter->netdev; |
| struct qlcnic_skb_frag *frag; |
| |
| 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 >= budget) |
| 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) |
| { |
| int tx_complete, work_done; |
| struct qlcnic_host_sds_ring *sds_ring; |
| struct qlcnic_adapter *adapter; |
| |
| sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
| adapter = sds_ring->adapter; |
| tx_complete = qlcnic_process_cmd_ring(adapter, adapter->tx_ring, |
| budget); |
| 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; |
| struct qlcnic_adapter *adapter; |
| int work_done; |
| |
| sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
| adapter = sds_ring->adapter; |
| |
| 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, link_speed; |
| u8 link_status, module, duplex, autoneg, lb_status = 0; |
| struct net_device *netdev = adapter->netdev; |
| |
| adapter->ahw->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->ahw->link_duplex = DUPLEX_FULL; |
| else |
| adapter->ahw->link_duplex = DUPLEX_HALF; |
| |
| adapter->ahw->module_type = module; |
| adapter->ahw->link_autoneg = autoneg; |
| |
| if (link_status) { |
| adapter->ahw->link_speed = link_speed; |
| } else { |
| adapter->ahw->link_speed = SPEED_UNKNOWN; |
| adapter->ahw->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->ahw->diag_cnt = -QLCNIC_TEST_IN_PROGRESS; |
| break; |
| case 2: |
| dev_info(dev, "loopback cable is not connected\n"); |
| adapter->ahw->diag_cnt = -QLCNIC_LB_CABLE_NOT_CONN; |
| break; |
| default: |
| dev_info(dev, |
| "loopback configure request failed, err %x\n", |
| ret); |
| adapter->ahw->diag_cnt = -QLCNIC_UNDEFINED_ERROR; |
| break; |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter, |
| struct qlcnic_host_rds_ring *ring, |
| u16 index, u16 cksum) |
| { |
| struct qlcnic_rx_buffer *buffer; |
| struct sk_buff *skb; |
| |
| buffer = &ring->rx_buf_arr[index]; |
| if (unlikely(buffer->skb == NULL)) { |
| WARN_ON(1); |
| return NULL; |
| } |
| |
| pci_unmap_single(adapter->pdev, buffer->dma, 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, is_lb_pkt; |
| u16 vid = 0xffff, t_vid; |
| |
| 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 (adapter->drv_mac_learn && |
| (adapter->flags & QLCNIC_ESWITCH_ENABLED)) { |
| t_vid = 0; |
| is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0); |
| qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, |
| cpu_to_le16(t_vid)); |
| } |
| |
| 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 ipv6hdr *ipv6h; |
| struct tcphdr *th; |
| bool push, timestamp; |
| int index, l2_hdr_offset, l4_hdr_offset, is_lb_pkt; |
| u16 lro_length, length, data_offset, t_vid, vid = 0xffff; |
| u32 seq_number; |
| |
| 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 (adapter->drv_mac_learn && |
| (adapter->flags & QLCNIC_ESWITCH_ENABLED)) { |
| t_vid = 0; |
| is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0); |
| qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, |
| cpu_to_le16(t_vid)); |
| } |
| |
| 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); |
| |
| if (ntohs(skb->protocol) == ETH_P_IPV6) { |
| ipv6h = (struct ipv6hdr *)skb->data; |
| th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr)); |
| length = (th->doff << 2) + lro_length; |
| ipv6h->payload_len = htons(length); |
| } else { |
| 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 (skb->protocol == htons(ETH_P_IPV6)) |
| skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; |
| else |
| skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; |
| } |
| |
| 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_host_rds_ring *rds_ring; |
| struct qlcnic_adapter *adapter = sds_ring->adapter; |
| struct list_head *cur; |
| struct status_desc *desc; |
| struct qlcnic_rx_buffer *rxbuf; |
| int opcode, desc_cnt, count = 0; |
| u64 sts_data0, sts_data1; |
| u8 ring; |
| 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] = QLCNIC_DESC_OWNER_FW; |
| consumer = get_next_index(consumer, sds_ring->num_desc); |
| } |
| count++; |
| } |
| |
| for (ring = 0; ring < adapter->max_rds_rings; 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, 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, u8 ring_id) |
| { |
| struct rcv_desc *pdesc; |
| struct qlcnic_rx_buffer *buffer; |
| int count = 0; |
| u32 producer, handle; |
| 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); |
| handle = qlcnic_get_ref_handle(adapter, buffer->ref_handle, |
| ring_id); |
| pdesc->reference_handle = cpu_to_le16(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; |
| |
| pr_info(KERN_INFO "\n"); |
| for (i = 0; i < skb->len; i++) { |
| QLCDB(adapter, DRV, "%02x ", data[i]); |
| if ((i & 0x0f) == 8) |
| pr_info(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->ahw->diag_cnt++; |
| else |
| dump_skb(skb, adapter); |
| |
| dev_kfree_skb_any(skb); |
| adapter->stats.rx_pkts++; |
| adapter->stats.rxbytes += length; |
| |
| return; |
| } |
| |
| void qlcnic_82xx_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); |
| } |
| |
| int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter, |
| struct net_device *netdev) |
| { |
| int ring, max_sds_rings; |
| 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; |
| |
| max_sds_rings = adapter->max_sds_rings; |
| |
| 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 / max_sds_rings); |
| else |
| netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll, |
| QLCNIC_NETDEV_WEIGHT*2); |
| } |
| |
| if (qlcnic_alloc_tx_rings(adapter, netdev)) { |
| qlcnic_free_sds_rings(recv_ctx); |
| return -ENOMEM; |
| } |
| |
| return 0; |
| } |
| |
| void qlcnic_82xx_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); |
| qlcnic_free_tx_rings(adapter); |
| } |
| |
| void qlcnic_82xx_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_82xx_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); |
| } |
| } |
| |
| #define QLC_83XX_NORMAL_LB_PKT (1ULL << 36) |
| #define QLC_83XX_LRO_LB_PKT (1ULL << 46) |
| |
| static inline int qlcnic_83xx_is_lb_pkt(u64 sts_data, int lro_pkt) |
| { |
| if (lro_pkt) |
| return (sts_data & QLC_83XX_LRO_LB_PKT) ? 1 : 0; |
| else |
| return (sts_data & QLC_83XX_NORMAL_LB_PKT) ? 1 : 0; |
| } |
| |
| static struct qlcnic_rx_buffer * |
| qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter, |
| struct qlcnic_host_sds_ring *sds_ring, |
| u8 ring, u64 sts_data[]) |
| { |
| 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, is_lb_pkt; |
| u16 vid = 0xffff, t_vid; |
| |
| if (unlikely(ring >= adapter->max_rds_rings)) |
| return NULL; |
| |
| rds_ring = &recv_ctx->rds_rings[ring]; |
| |
| index = qlcnic_83xx_hndl(sts_data[0]); |
| if (unlikely(index >= rds_ring->num_desc)) |
| return NULL; |
| |
| buffer = &rds_ring->rx_buf_arr[index]; |
| length = qlcnic_83xx_pktln(sts_data[0]); |
| cksum = qlcnic_83xx_csum_status(sts_data[1]); |
| skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum); |
| if (!skb) |
| return buffer; |
| |
| if (adapter->drv_mac_learn && |
| (adapter->flags & QLCNIC_ESWITCH_ENABLED)) { |
| t_vid = 0; |
| is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 0); |
| qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, |
| cpu_to_le16(t_vid)); |
| } |
| |
| if (length > rds_ring->skb_size) |
| skb_put(skb, rds_ring->skb_size); |
| else |
| skb_put(skb, length); |
| |
| 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; |
| } |
| |
| static struct qlcnic_rx_buffer * |
| qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter, |
| u8 ring, u64 sts_data[]) |
| { |
| 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 ipv6hdr *ipv6h; |
| struct tcphdr *th; |
| bool push; |
| int l2_hdr_offset, l4_hdr_offset; |
| int index, is_lb_pkt; |
| u16 lro_length, length, data_offset, gso_size; |
| u16 vid = 0xffff, t_vid; |
| |
| if (unlikely(ring > adapter->max_rds_rings)) |
| return NULL; |
| |
| rds_ring = &recv_ctx->rds_rings[ring]; |
| |
| index = qlcnic_83xx_hndl(sts_data[0]); |
| if (unlikely(index > rds_ring->num_desc)) |
| return NULL; |
| |
| buffer = &rds_ring->rx_buf_arr[index]; |
| |
| lro_length = qlcnic_83xx_lro_pktln(sts_data[0]); |
| l2_hdr_offset = qlcnic_83xx_l2_hdr_off(sts_data[1]); |
| l4_hdr_offset = qlcnic_83xx_l4_hdr_off(sts_data[1]); |
| push = qlcnic_83xx_is_psh_bit(sts_data[1]); |
| |
| skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); |
| if (!skb) |
| return buffer; |
| |
| if (adapter->drv_mac_learn && |
| (adapter->flags & QLCNIC_ESWITCH_ENABLED)) { |
| t_vid = 0; |
| is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 1); |
| qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, |
| cpu_to_le16(t_vid)); |
| } |
| if (qlcnic_83xx_is_tstamp(sts_data[1])) |
| data_offset = l4_hdr_offset + QLCNIC_TCP_TS_HDR_SIZE; |
| else |
| data_offset = l4_hdr_offset + QLCNIC_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); |
| if (ntohs(skb->protocol) == ETH_P_IPV6) { |
| ipv6h = (struct ipv6hdr *)skb->data; |
| th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr)); |
| |
| length = (th->doff << 2) + lro_length; |
| ipv6h->payload_len = htons(length); |
| } else { |
| 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; |
| length = skb->len; |
| |
| if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) { |
| gso_size = qlcnic_83xx_get_lro_sts_mss(sts_data[0]); |
| skb_shinfo(skb)->gso_size = gso_size; |
| if (skb->protocol == htons(ETH_P_IPV6)) |
| skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; |
| else |
| skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; |
| } |
| |
| if (vid != 0xffff) |
| __vlan_hwaccel_put_tag(skb, vid); |
| |
| netif_receive_skb(skb); |
| |
| adapter->stats.lro_pkts++; |
| adapter->stats.lrobytes += length; |
| return buffer; |
| } |
| |
| static int qlcnic_83xx_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, |
| int max) |
| { |
| struct qlcnic_host_rds_ring *rds_ring; |
| struct qlcnic_adapter *adapter = sds_ring->adapter; |
| struct list_head *cur; |
| struct status_desc *desc; |
| struct qlcnic_rx_buffer *rxbuf = NULL; |
| u8 ring; |
| u64 sts_data[2]; |
| int count = 0, opcode; |
| u32 consumer = sds_ring->consumer; |
| |
| while (count < max) { |
| desc = &sds_ring->desc_head[consumer]; |
| sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); |
| opcode = qlcnic_83xx_opcode(sts_data[1]); |
| if (!opcode) |
| break; |
| sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); |
| ring = QLCNIC_FETCH_RING_ID(sts_data[0]); |
| |
| switch (opcode) { |
| case QLC_83XX_REG_DESC: |
| rxbuf = qlcnic_83xx_process_rcv(adapter, sds_ring, |
| ring, sts_data); |
| break; |
| case QLC_83XX_LRO_DESC: |
| rxbuf = qlcnic_83xx_process_lro(adapter, ring, |
| sts_data); |
| break; |
| default: |
| dev_info(&adapter->pdev->dev, |
| "Unkonwn opcode: 0x%x\n", opcode); |
| goto skip; |
| } |
| |
| if (likely(rxbuf)) |
| list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]); |
| else |
| adapter->stats.null_rxbuf++; |
| skip: |
| desc = &sds_ring->desc_head[consumer]; |
| /* Reset the descriptor */ |
| desc->status_desc_data[1] = 0; |
| consumer = get_next_index(consumer, sds_ring->num_desc); |
| count++; |
| } |
| for (ring = 0; ring < adapter->max_rds_rings; 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, ring); |
| } |
| if (count) { |
| sds_ring->consumer = consumer; |
| writel(consumer, sds_ring->crb_sts_consumer); |
| } |
| return count; |
| } |
| |
| static int qlcnic_83xx_poll(struct napi_struct *napi, int budget) |
| { |
| int tx_complete; |
| int work_done; |
| struct qlcnic_host_sds_ring *sds_ring; |
| struct qlcnic_adapter *adapter; |
| struct qlcnic_host_tx_ring *tx_ring; |
| |
| sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
| adapter = sds_ring->adapter; |
| /* tx ring count = 1 */ |
| tx_ring = adapter->tx_ring; |
| |
| tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget); |
| work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); |
| if ((work_done < budget) && tx_complete) { |
| napi_complete(&sds_ring->napi); |
| qlcnic_83xx_enable_intr(adapter, sds_ring); |
| } |
| |
| return work_done; |
| } |
| |
| static int qlcnic_83xx_msix_tx_poll(struct napi_struct *napi, int budget) |
| { |
| int work_done; |
| struct qlcnic_host_tx_ring *tx_ring; |
| struct qlcnic_adapter *adapter; |
| |
| budget = QLCNIC_TX_POLL_BUDGET; |
| tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi); |
| adapter = tx_ring->adapter; |
| work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget); |
| if (work_done) { |
| napi_complete(&tx_ring->napi); |
| if (test_bit(__QLCNIC_DEV_UP , &adapter->state)) |
| qlcnic_83xx_enable_tx_intr(adapter, tx_ring); |
| } |
| |
| return work_done; |
| } |
| |
| static int qlcnic_83xx_rx_poll(struct napi_struct *napi, int budget) |
| { |
| int work_done; |
| struct qlcnic_host_sds_ring *sds_ring; |
| struct qlcnic_adapter *adapter; |
| |
| sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); |
| adapter = sds_ring->adapter; |
| work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget); |
| if (work_done < budget) { |
| napi_complete(&sds_ring->napi); |
| if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) |
| qlcnic_83xx_enable_intr(adapter, sds_ring); |
| } |
| |
| return work_done; |
| } |
| |
| void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter) |
| { |
| int ring; |
| struct qlcnic_host_sds_ring *sds_ring; |
| struct qlcnic_host_tx_ring *tx_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); |
| if (adapter->flags & QLCNIC_MSIX_ENABLED) |
| qlcnic_83xx_enable_intr(adapter, sds_ring); |
| } |
| |
| if (adapter->flags & QLCNIC_MSIX_ENABLED) { |
| for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) { |
| tx_ring = &adapter->tx_ring[ring]; |
| napi_enable(&tx_ring->napi); |
| qlcnic_83xx_enable_tx_intr(adapter, tx_ring); |
| } |
| } |
| } |
| |
| void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter) |
| { |
| int ring; |
| struct qlcnic_host_sds_ring *sds_ring; |
| struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
| struct qlcnic_host_tx_ring *tx_ring; |
| |
| 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]; |
| if (adapter->flags & QLCNIC_MSIX_ENABLED) |
| qlcnic_83xx_disable_intr(adapter, sds_ring); |
| napi_synchronize(&sds_ring->napi); |
| napi_disable(&sds_ring->napi); |
| } |
| |
| if (adapter->flags & QLCNIC_MSIX_ENABLED) { |
| for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) { |
| tx_ring = &adapter->tx_ring[ring]; |
| qlcnic_83xx_disable_tx_intr(adapter, tx_ring); |
| napi_synchronize(&tx_ring->napi); |
| napi_disable(&tx_ring->napi); |
| } |
| } |
| } |
| |
| int qlcnic_83xx_napi_add(struct qlcnic_adapter *adapter, |
| struct net_device *netdev) |
| { |
| int ring, max_sds_rings; |
| struct qlcnic_host_sds_ring *sds_ring; |
| struct qlcnic_host_tx_ring *tx_ring; |
| struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
| |
| if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings)) |
| return -ENOMEM; |
| |
| max_sds_rings = adapter->max_sds_rings; |
| for (ring = 0; ring < adapter->max_sds_rings; ring++) { |
| sds_ring = &recv_ctx->sds_rings[ring]; |
| if (adapter->flags & QLCNIC_MSIX_ENABLED) |
| netif_napi_add(netdev, &sds_ring->napi, |
| qlcnic_83xx_rx_poll, |
| QLCNIC_NETDEV_WEIGHT * 2); |
| else |
| netif_napi_add(netdev, &sds_ring->napi, |
| qlcnic_83xx_poll, |
| QLCNIC_NETDEV_WEIGHT / max_sds_rings); |
| } |
| |
| if (qlcnic_alloc_tx_rings(adapter, netdev)) { |
| qlcnic_free_sds_rings(recv_ctx); |
| return -ENOMEM; |
| } |
| |
| if (adapter->flags & QLCNIC_MSIX_ENABLED) { |
| for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) { |
| tx_ring = &adapter->tx_ring[ring]; |
| netif_napi_add(netdev, &tx_ring->napi, |
| qlcnic_83xx_msix_tx_poll, |
| QLCNIC_NETDEV_WEIGHT); |
| } |
| } |
| |
| return 0; |
| } |
| |
| void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter) |
| { |
| int ring; |
| struct qlcnic_host_sds_ring *sds_ring; |
| struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
| struct qlcnic_host_tx_ring *tx_ring; |
| |
| 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); |
| |
| if ((adapter->flags & QLCNIC_MSIX_ENABLED)) { |
| for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) { |
| tx_ring = &adapter->tx_ring[ring]; |
| netif_napi_del(&tx_ring->napi); |
| } |
| } |
| |
| qlcnic_free_tx_rings(adapter); |
| } |
| |
| void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter, |
| int ring, u64 sts_data[]) |
| { |
| struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; |
| struct sk_buff *skb; |
| struct qlcnic_host_rds_ring *rds_ring; |
| int index, length; |
| |
| if (unlikely(ring >= adapter->max_rds_rings)) |
| return; |
| |
| rds_ring = &recv_ctx->rds_rings[ring]; |
| index = qlcnic_83xx_hndl(sts_data[0]); |
| if (unlikely(index >= rds_ring->num_desc)) |
| return; |
| |
| length = qlcnic_83xx_pktln(sts_data[0]); |
| |
| skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK); |
| if (!skb) |
| return; |
| |
| if (length > rds_ring->skb_size) |
| skb_put(skb, rds_ring->skb_size); |
| else |
| skb_put(skb, length); |
| |
| if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr)) |
| adapter->ahw->diag_cnt++; |
| else |
| dump_skb(skb, adapter); |
| |
| dev_kfree_skb_any(skb); |
| return; |
| } |
| |
| void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring) |
| { |
| struct qlcnic_adapter *adapter = sds_ring->adapter; |
| struct status_desc *desc; |
| u64 sts_data[2]; |
| int ring, opcode; |
| u32 consumer = sds_ring->consumer; |
| |
| desc = &sds_ring->desc_head[consumer]; |
| sts_data[0] = le64_to_cpu(desc->status_desc_data[0]); |
| sts_data[1] = le64_to_cpu(desc->status_desc_data[1]); |
| opcode = qlcnic_83xx_opcode(sts_data[1]); |
| if (!opcode) |
| return; |
| |
| ring = QLCNIC_FETCH_RING_ID(qlcnic_83xx_hndl(sts_data[0])); |
| qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data); |
| 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); |
| } |