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0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * QLogic qlcnic NIC Driver
0004  * Copyright (c) 2009-2013 QLogic Corporation
0005  */
0006 
0007 #include <linux/netdevice.h>
0008 #include <linux/if_vlan.h>
0009 #include <net/ip.h>
0010 #include <linux/ipv6.h>
0011 #include <net/checksum.h>
0012 #include <linux/printk.h>
0013 #include <linux/jiffies.h>
0014 
0015 #include "qlcnic.h"
0016 
0017 #define QLCNIC_TX_ETHER_PKT     0x01
0018 #define QLCNIC_TX_TCP_PKT       0x02
0019 #define QLCNIC_TX_UDP_PKT       0x03
0020 #define QLCNIC_TX_IP_PKT        0x04
0021 #define QLCNIC_TX_TCP_LSO       0x05
0022 #define QLCNIC_TX_TCP_LSO6      0x06
0023 #define QLCNIC_TX_ENCAP_PKT     0x07
0024 #define QLCNIC_TX_ENCAP_LSO     0x08
0025 #define QLCNIC_TX_TCPV6_PKT     0x0b
0026 #define QLCNIC_TX_UDPV6_PKT     0x0c
0027 
0028 #define QLCNIC_FLAGS_VLAN_TAGGED    0x10
0029 #define QLCNIC_FLAGS_VLAN_OOB       0x40
0030 
0031 #define qlcnic_set_tx_vlan_tci(cmd_desc, v) \
0032     (cmd_desc)->vlan_TCI = cpu_to_le16(v);
0033 #define qlcnic_set_cmd_desc_port(cmd_desc, var) \
0034     ((cmd_desc)->port_ctxid |= ((var) & 0x0F))
0035 #define qlcnic_set_cmd_desc_ctxid(cmd_desc, var)    \
0036     ((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0))
0037 
0038 #define qlcnic_set_tx_port(_desc, _port) \
0039     ((_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0))
0040 
0041 #define qlcnic_set_tx_flags_opcode(_desc, _flags, _opcode) \
0042     ((_desc)->flags_opcode |= \
0043     cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7)))
0044 
0045 #define qlcnic_set_tx_frags_len(_desc, _frags, _len) \
0046     ((_desc)->nfrags__length = \
0047     cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8)))
0048 
0049 /* owner bits of status_desc */
0050 #define STATUS_OWNER_HOST   (0x1ULL << 56)
0051 #define STATUS_OWNER_PHANTOM    (0x2ULL << 56)
0052 
0053 /* Status descriptor:
0054    0-3 port, 4-7 status, 8-11 type, 12-27 total_length
0055    28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset
0056    53-55 desc_cnt, 56-57 owner, 58-63 opcode
0057  */
0058 #define qlcnic_get_sts_port(sts_data)   \
0059     ((sts_data) & 0x0F)
0060 #define qlcnic_get_sts_status(sts_data) \
0061     (((sts_data) >> 4) & 0x0F)
0062 #define qlcnic_get_sts_type(sts_data)   \
0063     (((sts_data) >> 8) & 0x0F)
0064 #define qlcnic_get_sts_totallength(sts_data)    \
0065     (((sts_data) >> 12) & 0xFFFF)
0066 #define qlcnic_get_sts_refhandle(sts_data)  \
0067     (((sts_data) >> 28) & 0xFFFF)
0068 #define qlcnic_get_sts_prot(sts_data)   \
0069     (((sts_data) >> 44) & 0x0F)
0070 #define qlcnic_get_sts_pkt_offset(sts_data) \
0071     (((sts_data) >> 48) & 0x1F)
0072 #define qlcnic_get_sts_desc_cnt(sts_data)   \
0073     (((sts_data) >> 53) & 0x7)
0074 #define qlcnic_get_sts_opcode(sts_data) \
0075     (((sts_data) >> 58) & 0x03F)
0076 
0077 #define qlcnic_get_lro_sts_refhandle(sts_data)  \
0078     ((sts_data) & 0x07FFF)
0079 #define qlcnic_get_lro_sts_length(sts_data) \
0080     (((sts_data) >> 16) & 0x0FFFF)
0081 #define qlcnic_get_lro_sts_l2_hdr_offset(sts_data)  \
0082     (((sts_data) >> 32) & 0x0FF)
0083 #define qlcnic_get_lro_sts_l4_hdr_offset(sts_data)  \
0084     (((sts_data) >> 40) & 0x0FF)
0085 #define qlcnic_get_lro_sts_timestamp(sts_data)  \
0086     (((sts_data) >> 48) & 0x1)
0087 #define qlcnic_get_lro_sts_type(sts_data)   \
0088     (((sts_data) >> 49) & 0x7)
0089 #define qlcnic_get_lro_sts_push_flag(sts_data)      \
0090     (((sts_data) >> 52) & 0x1)
0091 #define qlcnic_get_lro_sts_seq_number(sts_data)     \
0092     ((sts_data) & 0x0FFFFFFFF)
0093 #define qlcnic_get_lro_sts_mss(sts_data1)       \
0094     ((sts_data1 >> 32) & 0x0FFFF)
0095 
0096 #define qlcnic_83xx_get_lro_sts_mss(sts) ((sts) & 0xffff)
0097 
0098 /* opcode field in status_desc */
0099 #define QLCNIC_SYN_OFFLOAD  0x03
0100 #define QLCNIC_RXPKT_DESC   0x04
0101 #define QLCNIC_OLD_RXPKT_DESC   0x3f
0102 #define QLCNIC_RESPONSE_DESC    0x05
0103 #define QLCNIC_LRO_DESC     0x12
0104 
0105 #define QLCNIC_TCP_HDR_SIZE     20
0106 #define QLCNIC_TCP_TS_OPTION_SIZE   12
0107 #define QLCNIC_FETCH_RING_ID(handle)    ((handle) >> 63)
0108 #define QLCNIC_DESC_OWNER_FW        cpu_to_le64(STATUS_OWNER_PHANTOM)
0109 
0110 #define QLCNIC_TCP_TS_HDR_SIZE (QLCNIC_TCP_HDR_SIZE + QLCNIC_TCP_TS_OPTION_SIZE)
0111 
0112 /* for status field in status_desc */
0113 #define STATUS_CKSUM_LOOP   0
0114 #define STATUS_CKSUM_OK     2
0115 
0116 #define qlcnic_83xx_pktln(sts)      ((sts >> 32) & 0x3FFF)
0117 #define qlcnic_83xx_hndl(sts)       ((sts >> 48) & 0x7FFF)
0118 #define qlcnic_83xx_csum_status(sts)    ((sts >> 39) & 7)
0119 #define qlcnic_83xx_opcode(sts) ((sts >> 42) & 0xF)
0120 #define qlcnic_83xx_vlan_tag(sts)   (((sts) >> 48) & 0xFFFF)
0121 #define qlcnic_83xx_lro_pktln(sts)  (((sts) >> 32) & 0x3FFF)
0122 #define qlcnic_83xx_l2_hdr_off(sts) (((sts) >> 16) & 0xFF)
0123 #define qlcnic_83xx_l4_hdr_off(sts) (((sts) >> 24) & 0xFF)
0124 #define qlcnic_83xx_pkt_cnt(sts)    (((sts) >> 16) & 0x7)
0125 #define qlcnic_83xx_is_tstamp(sts)  (((sts) >> 40) & 1)
0126 #define qlcnic_83xx_is_psh_bit(sts) (((sts) >> 41) & 1)
0127 #define qlcnic_83xx_is_ip_align(sts)    (((sts) >> 46) & 1)
0128 #define qlcnic_83xx_has_vlan_tag(sts)   (((sts) >> 47) & 1)
0129 
0130 static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring,
0131                    int max);
0132 
0133 static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *,
0134                         struct qlcnic_host_rds_ring *,
0135                         u16, u16);
0136 
0137 static inline u8 qlcnic_mac_hash(u64 mac, u16 vlan)
0138 {
0139     return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff) ^ (vlan & 0xff));
0140 }
0141 
0142 static inline u32 qlcnic_get_ref_handle(struct qlcnic_adapter *adapter,
0143                     u16 handle, u8 ring_id)
0144 {
0145     if (qlcnic_83xx_check(adapter))
0146         return handle | (ring_id << 15);
0147     else
0148         return handle;
0149 }
0150 
0151 static inline int qlcnic_82xx_is_lb_pkt(u64 sts_data)
0152 {
0153     return (qlcnic_get_sts_status(sts_data) == STATUS_CKSUM_LOOP) ? 1 : 0;
0154 }
0155 
0156 static void qlcnic_delete_rx_list_mac(struct qlcnic_adapter *adapter,
0157                       struct qlcnic_filter *fil,
0158                       void *addr, u16 vlan_id)
0159 {
0160     int ret;
0161     u8 op;
0162 
0163     op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD;
0164     ret = qlcnic_sre_macaddr_change(adapter, addr, vlan_id, op);
0165     if (ret)
0166         return;
0167 
0168     op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL;
0169     ret = qlcnic_sre_macaddr_change(adapter, addr, vlan_id, op);
0170     if (!ret) {
0171         hlist_del(&fil->fnode);
0172         adapter->rx_fhash.fnum--;
0173     }
0174 }
0175 
0176 static struct qlcnic_filter *qlcnic_find_mac_filter(struct hlist_head *head,
0177                             void *addr, u16 vlan_id)
0178 {
0179     struct qlcnic_filter *tmp_fil = NULL;
0180     struct hlist_node *n;
0181 
0182     hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
0183         if (ether_addr_equal(tmp_fil->faddr, addr) &&
0184             tmp_fil->vlan_id == vlan_id)
0185             return tmp_fil;
0186     }
0187 
0188     return NULL;
0189 }
0190 
0191 static void qlcnic_add_lb_filter(struct qlcnic_adapter *adapter,
0192                  struct sk_buff *skb, int loopback_pkt, u16 vlan_id)
0193 {
0194     struct ethhdr *phdr = (struct ethhdr *)(skb->data);
0195     struct qlcnic_filter *fil, *tmp_fil;
0196     struct hlist_head *head;
0197     unsigned long time;
0198     u64 src_addr = 0;
0199     u8 hindex, op;
0200     int ret;
0201 
0202     if (!qlcnic_sriov_pf_check(adapter) || (vlan_id == 0xffff))
0203         vlan_id = 0;
0204 
0205     memcpy(&src_addr, phdr->h_source, ETH_ALEN);
0206     hindex = qlcnic_mac_hash(src_addr, vlan_id) &
0207          (adapter->fhash.fbucket_size - 1);
0208 
0209     if (loopback_pkt) {
0210         if (adapter->rx_fhash.fnum >= adapter->rx_fhash.fmax)
0211             return;
0212 
0213         head = &(adapter->rx_fhash.fhead[hindex]);
0214 
0215         tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id);
0216         if (tmp_fil) {
0217             time = tmp_fil->ftime;
0218             if (time_after(jiffies, QLCNIC_READD_AGE * HZ + time))
0219                 tmp_fil->ftime = jiffies;
0220             return;
0221         }
0222 
0223         fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC);
0224         if (!fil)
0225             return;
0226 
0227         fil->ftime = jiffies;
0228         memcpy(fil->faddr, &src_addr, ETH_ALEN);
0229         fil->vlan_id = vlan_id;
0230         spin_lock(&adapter->rx_mac_learn_lock);
0231         hlist_add_head(&(fil->fnode), head);
0232         adapter->rx_fhash.fnum++;
0233         spin_unlock(&adapter->rx_mac_learn_lock);
0234     } else {
0235         head = &adapter->fhash.fhead[hindex];
0236 
0237         spin_lock(&adapter->mac_learn_lock);
0238 
0239         tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id);
0240         if (tmp_fil) {
0241             op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL;
0242             ret = qlcnic_sre_macaddr_change(adapter,
0243                             (u8 *)&src_addr,
0244                             vlan_id, op);
0245             if (!ret) {
0246                 hlist_del(&tmp_fil->fnode);
0247                 adapter->fhash.fnum--;
0248             }
0249 
0250             spin_unlock(&adapter->mac_learn_lock);
0251 
0252             return;
0253         }
0254 
0255         spin_unlock(&adapter->mac_learn_lock);
0256 
0257         head = &adapter->rx_fhash.fhead[hindex];
0258 
0259         spin_lock(&adapter->rx_mac_learn_lock);
0260 
0261         tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id);
0262         if (tmp_fil)
0263             qlcnic_delete_rx_list_mac(adapter, tmp_fil, &src_addr,
0264                           vlan_id);
0265 
0266         spin_unlock(&adapter->rx_mac_learn_lock);
0267     }
0268 }
0269 
0270 void qlcnic_82xx_change_filter(struct qlcnic_adapter *adapter, u64 *uaddr,
0271                    u16 vlan_id, struct qlcnic_host_tx_ring *tx_ring)
0272 {
0273     struct cmd_desc_type0 *hwdesc;
0274     struct qlcnic_nic_req *req;
0275     struct qlcnic_mac_req *mac_req;
0276     struct qlcnic_vlan_req *vlan_req;
0277     u32 producer;
0278     u64 word;
0279 
0280     producer = tx_ring->producer;
0281     hwdesc = &tx_ring->desc_head[tx_ring->producer];
0282 
0283     req = (struct qlcnic_nic_req *)hwdesc;
0284     memset(req, 0, sizeof(struct qlcnic_nic_req));
0285     req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23);
0286 
0287     word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16);
0288     req->req_hdr = cpu_to_le64(word);
0289 
0290     mac_req = (struct qlcnic_mac_req *)&(req->words[0]);
0291     mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD;
0292     memcpy(mac_req->mac_addr, uaddr, ETH_ALEN);
0293 
0294     vlan_req = (struct qlcnic_vlan_req *)&req->words[1];
0295     vlan_req->vlan_id = cpu_to_le16(vlan_id);
0296 
0297     tx_ring->producer = get_next_index(producer, tx_ring->num_desc);
0298     smp_mb();
0299 }
0300 
0301 static void qlcnic_send_filter(struct qlcnic_adapter *adapter,
0302                    struct cmd_desc_type0 *first_desc,
0303                    struct sk_buff *skb,
0304                    struct qlcnic_host_tx_ring *tx_ring)
0305 {
0306     struct vlan_ethhdr *vh = (struct vlan_ethhdr *)(skb->data);
0307     struct ethhdr *phdr = (struct ethhdr *)(skb->data);
0308     u16 protocol = ntohs(skb->protocol);
0309     struct qlcnic_filter *fil, *tmp_fil;
0310     struct hlist_head *head;
0311     struct hlist_node *n;
0312     u64 src_addr = 0;
0313     u16 vlan_id = 0;
0314     u8 hindex, hval;
0315 
0316     if (ether_addr_equal(phdr->h_source, adapter->mac_addr))
0317         return;
0318 
0319     if (adapter->flags & QLCNIC_VLAN_FILTERING) {
0320         if (protocol == ETH_P_8021Q) {
0321             vh = (struct vlan_ethhdr *)skb->data;
0322             vlan_id = ntohs(vh->h_vlan_TCI);
0323         } else if (skb_vlan_tag_present(skb)) {
0324             vlan_id = skb_vlan_tag_get(skb);
0325         }
0326     }
0327 
0328     memcpy(&src_addr, phdr->h_source, ETH_ALEN);
0329     hval = qlcnic_mac_hash(src_addr, vlan_id);
0330     hindex = hval & (adapter->fhash.fbucket_size - 1);
0331     head = &(adapter->fhash.fhead[hindex]);
0332 
0333     hlist_for_each_entry_safe(tmp_fil, n, head, fnode) {
0334         if (ether_addr_equal(tmp_fil->faddr, (u8 *)&src_addr) &&
0335             tmp_fil->vlan_id == vlan_id) {
0336             if (time_is_before_jiffies(QLCNIC_READD_AGE * HZ + tmp_fil->ftime))
0337                 qlcnic_change_filter(adapter, &src_addr,
0338                              vlan_id, tx_ring);
0339             tmp_fil->ftime = jiffies;
0340             return;
0341         }
0342     }
0343 
0344     if (unlikely(adapter->fhash.fnum >= adapter->fhash.fmax)) {
0345         adapter->stats.mac_filter_limit_overrun++;
0346         return;
0347     }
0348 
0349     fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC);
0350     if (!fil)
0351         return;
0352 
0353     qlcnic_change_filter(adapter, &src_addr, vlan_id, tx_ring);
0354     fil->ftime = jiffies;
0355     fil->vlan_id = vlan_id;
0356     memcpy(fil->faddr, &src_addr, ETH_ALEN);
0357     spin_lock(&adapter->mac_learn_lock);
0358     hlist_add_head(&(fil->fnode), head);
0359     adapter->fhash.fnum++;
0360     spin_unlock(&adapter->mac_learn_lock);
0361 }
0362 
0363 #define QLCNIC_ENCAP_VXLAN_PKT      BIT_0
0364 #define QLCNIC_ENCAP_OUTER_L3_IP6   BIT_1
0365 #define QLCNIC_ENCAP_INNER_L3_IP6   BIT_2
0366 #define QLCNIC_ENCAP_INNER_L4_UDP   BIT_3
0367 #define QLCNIC_ENCAP_DO_L3_CSUM     BIT_4
0368 #define QLCNIC_ENCAP_DO_L4_CSUM     BIT_5
0369 
0370 static int qlcnic_tx_encap_pkt(struct qlcnic_adapter *adapter,
0371                    struct cmd_desc_type0 *first_desc,
0372                    struct sk_buff *skb,
0373                    struct qlcnic_host_tx_ring *tx_ring)
0374 {
0375     u8 opcode = 0, inner_hdr_len = 0, outer_hdr_len = 0, total_hdr_len = 0;
0376     int copied, copy_len, descr_size;
0377     u32 producer = tx_ring->producer;
0378     struct cmd_desc_type0 *hwdesc;
0379     u16 flags = 0, encap_descr = 0;
0380 
0381     opcode = QLCNIC_TX_ETHER_PKT;
0382     encap_descr = QLCNIC_ENCAP_VXLAN_PKT;
0383 
0384     if (skb_is_gso(skb)) {
0385         inner_hdr_len = skb_inner_transport_header(skb) +
0386                 inner_tcp_hdrlen(skb) -
0387                 skb_inner_mac_header(skb);
0388 
0389         /* VXLAN header size = 8 */
0390         outer_hdr_len = skb_transport_offset(skb) + 8 +
0391                 sizeof(struct udphdr);
0392         first_desc->outer_hdr_length = outer_hdr_len;
0393         total_hdr_len = inner_hdr_len + outer_hdr_len;
0394         encap_descr |= QLCNIC_ENCAP_DO_L3_CSUM |
0395                    QLCNIC_ENCAP_DO_L4_CSUM;
0396         first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
0397         first_desc->hdr_length = inner_hdr_len;
0398 
0399         /* Copy inner and outer headers in Tx descriptor(s)
0400          * If total_hdr_len > cmd_desc_type0, use multiple
0401          * descriptors
0402          */
0403         copied = 0;
0404         descr_size = (int)sizeof(struct cmd_desc_type0);
0405         while (copied < total_hdr_len) {
0406             copy_len = min(descr_size, (total_hdr_len - copied));
0407             hwdesc = &tx_ring->desc_head[producer];
0408             tx_ring->cmd_buf_arr[producer].skb = NULL;
0409             skb_copy_from_linear_data_offset(skb, copied,
0410                              (char *)hwdesc,
0411                              copy_len);
0412             copied += copy_len;
0413             producer = get_next_index(producer, tx_ring->num_desc);
0414         }
0415 
0416         tx_ring->producer = producer;
0417 
0418         /* Make sure updated tx_ring->producer is visible
0419          * for qlcnic_tx_avail()
0420          */
0421         smp_mb();
0422         adapter->stats.encap_lso_frames++;
0423 
0424         opcode = QLCNIC_TX_ENCAP_LSO;
0425     } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
0426         if (inner_ip_hdr(skb)->version == 6) {
0427             if (inner_ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
0428                 encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP;
0429         } else {
0430             if (inner_ip_hdr(skb)->protocol == IPPROTO_UDP)
0431                 encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP;
0432         }
0433 
0434         adapter->stats.encap_tx_csummed++;
0435         opcode = QLCNIC_TX_ENCAP_PKT;
0436     }
0437 
0438     /* Prepare first 16 bits of byte offset 16 of Tx descriptor */
0439     if (ip_hdr(skb)->version == 6)
0440         encap_descr |= QLCNIC_ENCAP_OUTER_L3_IP6;
0441 
0442     /* outer IP header's size in 32bit words size*/
0443     encap_descr |= (skb_network_header_len(skb) >> 2) << 6;
0444 
0445     /* outer IP header offset */
0446     encap_descr |= skb_network_offset(skb) << 10;
0447     first_desc->encap_descr = cpu_to_le16(encap_descr);
0448 
0449     first_desc->tcp_hdr_offset = skb_inner_transport_header(skb) -
0450                      skb->data;
0451     first_desc->ip_hdr_offset = skb_inner_network_offset(skb);
0452 
0453     qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
0454 
0455     return 0;
0456 }
0457 
0458 static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter,
0459              struct cmd_desc_type0 *first_desc, struct sk_buff *skb,
0460              struct qlcnic_host_tx_ring *tx_ring)
0461 {
0462     u8 l4proto, opcode = 0, hdr_len = 0, tag_vlan = 0;
0463     u16 flags = 0, vlan_tci = 0;
0464     int copied, offset, copy_len, size;
0465     struct cmd_desc_type0 *hwdesc;
0466     struct vlan_ethhdr *vh;
0467     u16 protocol = ntohs(skb->protocol);
0468     u32 producer = tx_ring->producer;
0469 
0470     if (protocol == ETH_P_8021Q) {
0471         vh = (struct vlan_ethhdr *)skb->data;
0472         flags = QLCNIC_FLAGS_VLAN_TAGGED;
0473         vlan_tci = ntohs(vh->h_vlan_TCI);
0474         protocol = ntohs(vh->h_vlan_encapsulated_proto);
0475         tag_vlan = 1;
0476     } else if (skb_vlan_tag_present(skb)) {
0477         flags = QLCNIC_FLAGS_VLAN_OOB;
0478         vlan_tci = skb_vlan_tag_get(skb);
0479         tag_vlan = 1;
0480     }
0481     if (unlikely(adapter->tx_pvid)) {
0482         if (tag_vlan && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
0483             return -EIO;
0484         if (tag_vlan && (adapter->flags & QLCNIC_TAGGING_ENABLED))
0485             goto set_flags;
0486 
0487         flags = QLCNIC_FLAGS_VLAN_OOB;
0488         vlan_tci = adapter->tx_pvid;
0489     }
0490 set_flags:
0491     qlcnic_set_tx_vlan_tci(first_desc, vlan_tci);
0492     qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
0493 
0494     if (*(skb->data) & BIT_0) {
0495         flags |= BIT_0;
0496         memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
0497     }
0498     opcode = QLCNIC_TX_ETHER_PKT;
0499     if (skb_is_gso(skb)) {
0500         hdr_len = skb_tcp_all_headers(skb);
0501         first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
0502         first_desc->hdr_length = hdr_len;
0503         opcode = (protocol == ETH_P_IPV6) ? QLCNIC_TX_TCP_LSO6 :
0504                             QLCNIC_TX_TCP_LSO;
0505 
0506         /* For LSO, we need to copy the MAC/IP/TCP headers into
0507         * the descriptor ring */
0508         copied = 0;
0509         offset = 2;
0510 
0511         if (flags & QLCNIC_FLAGS_VLAN_OOB) {
0512             first_desc->hdr_length += VLAN_HLEN;
0513             first_desc->tcp_hdr_offset = VLAN_HLEN;
0514             first_desc->ip_hdr_offset = VLAN_HLEN;
0515 
0516             /* Only in case of TSO on vlan device */
0517             flags |= QLCNIC_FLAGS_VLAN_TAGGED;
0518 
0519             /* Create a TSO vlan header template for firmware */
0520             hwdesc = &tx_ring->desc_head[producer];
0521             tx_ring->cmd_buf_arr[producer].skb = NULL;
0522 
0523             copy_len = min((int)sizeof(struct cmd_desc_type0) -
0524                        offset, hdr_len + VLAN_HLEN);
0525 
0526             vh = (struct vlan_ethhdr *)((char *) hwdesc + 2);
0527             skb_copy_from_linear_data(skb, vh, 12);
0528             vh->h_vlan_proto = htons(ETH_P_8021Q);
0529             vh->h_vlan_TCI = htons(vlan_tci);
0530 
0531             skb_copy_from_linear_data_offset(skb, 12,
0532                              (char *)vh + 16,
0533                              copy_len - 16);
0534             copied = copy_len - VLAN_HLEN;
0535             offset = 0;
0536             producer = get_next_index(producer, tx_ring->num_desc);
0537         }
0538 
0539         while (copied < hdr_len) {
0540             size = (int)sizeof(struct cmd_desc_type0) - offset;
0541             copy_len = min(size, (hdr_len - copied));
0542             hwdesc = &tx_ring->desc_head[producer];
0543             tx_ring->cmd_buf_arr[producer].skb = NULL;
0544             skb_copy_from_linear_data_offset(skb, copied,
0545                              (char *)hwdesc +
0546                              offset, copy_len);
0547             copied += copy_len;
0548             offset = 0;
0549             producer = get_next_index(producer, tx_ring->num_desc);
0550         }
0551 
0552         tx_ring->producer = producer;
0553         smp_mb();
0554         adapter->stats.lso_frames++;
0555 
0556     } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
0557         if (protocol == ETH_P_IP) {
0558             l4proto = ip_hdr(skb)->protocol;
0559 
0560             if (l4proto == IPPROTO_TCP)
0561                 opcode = QLCNIC_TX_TCP_PKT;
0562             else if (l4proto == IPPROTO_UDP)
0563                 opcode = QLCNIC_TX_UDP_PKT;
0564         } else if (protocol == ETH_P_IPV6) {
0565             l4proto = ipv6_hdr(skb)->nexthdr;
0566 
0567             if (l4proto == IPPROTO_TCP)
0568                 opcode = QLCNIC_TX_TCPV6_PKT;
0569             else if (l4proto == IPPROTO_UDP)
0570                 opcode = QLCNIC_TX_UDPV6_PKT;
0571         }
0572     }
0573     first_desc->tcp_hdr_offset += skb_transport_offset(skb);
0574     first_desc->ip_hdr_offset += skb_network_offset(skb);
0575     qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
0576 
0577     return 0;
0578 }
0579 
0580 static int qlcnic_map_tx_skb(struct pci_dev *pdev, struct sk_buff *skb,
0581                  struct qlcnic_cmd_buffer *pbuf)
0582 {
0583     struct qlcnic_skb_frag *nf;
0584     skb_frag_t *frag;
0585     int i, nr_frags;
0586     dma_addr_t map;
0587 
0588     nr_frags = skb_shinfo(skb)->nr_frags;
0589     nf = &pbuf->frag_array[0];
0590 
0591     map = dma_map_single(&pdev->dev, skb->data, skb_headlen(skb),
0592                  DMA_TO_DEVICE);
0593     if (dma_mapping_error(&pdev->dev, map))
0594         goto out_err;
0595 
0596     nf->dma = map;
0597     nf->length = skb_headlen(skb);
0598 
0599     for (i = 0; i < nr_frags; i++) {
0600         frag = &skb_shinfo(skb)->frags[i];
0601         nf = &pbuf->frag_array[i+1];
0602         map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
0603                        DMA_TO_DEVICE);
0604         if (dma_mapping_error(&pdev->dev, map))
0605             goto unwind;
0606 
0607         nf->dma = map;
0608         nf->length = skb_frag_size(frag);
0609     }
0610 
0611     return 0;
0612 
0613 unwind:
0614     while (--i >= 0) {
0615         nf = &pbuf->frag_array[i+1];
0616         dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE);
0617     }
0618 
0619     nf = &pbuf->frag_array[0];
0620     dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE);
0621 
0622 out_err:
0623     return -ENOMEM;
0624 }
0625 
0626 static void qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb,
0627                  struct qlcnic_cmd_buffer *pbuf)
0628 {
0629     struct qlcnic_skb_frag *nf = &pbuf->frag_array[0];
0630     int i, nr_frags = skb_shinfo(skb)->nr_frags;
0631 
0632     for (i = 0; i < nr_frags; i++) {
0633         nf = &pbuf->frag_array[i+1];
0634         dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE);
0635     }
0636 
0637     nf = &pbuf->frag_array[0];
0638     dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE);
0639     pbuf->skb = NULL;
0640 }
0641 
0642 static inline void qlcnic_clear_cmddesc(u64 *desc)
0643 {
0644     desc[0] = 0ULL;
0645     desc[2] = 0ULL;
0646     desc[7] = 0ULL;
0647 }
0648 
0649 netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
0650 {
0651     struct qlcnic_adapter *adapter = netdev_priv(netdev);
0652     struct qlcnic_host_tx_ring *tx_ring;
0653     struct qlcnic_cmd_buffer *pbuf;
0654     struct qlcnic_skb_frag *buffrag;
0655     struct cmd_desc_type0 *hwdesc, *first_desc;
0656     struct pci_dev *pdev;
0657     struct ethhdr *phdr;
0658     int i, k, frag_count, delta = 0;
0659     u32 producer, num_txd;
0660     u16 protocol;
0661     bool l4_is_udp = false;
0662 
0663     if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
0664         netif_tx_stop_all_queues(netdev);
0665         return NETDEV_TX_BUSY;
0666     }
0667 
0668     if (adapter->flags & QLCNIC_MACSPOOF) {
0669         phdr = (struct ethhdr *)skb->data;
0670         if (!ether_addr_equal(phdr->h_source, adapter->mac_addr))
0671             goto drop_packet;
0672     }
0673 
0674     tx_ring = &adapter->tx_ring[skb_get_queue_mapping(skb)];
0675     num_txd = tx_ring->num_desc;
0676 
0677     frag_count = skb_shinfo(skb)->nr_frags + 1;
0678 
0679     /* 14 frags supported for normal packet and
0680      * 32 frags supported for TSO packet
0681      */
0682     if (!skb_is_gso(skb) && frag_count > QLCNIC_MAX_FRAGS_PER_TX) {
0683         for (i = 0; i < (frag_count - QLCNIC_MAX_FRAGS_PER_TX); i++)
0684             delta += skb_frag_size(&skb_shinfo(skb)->frags[i]);
0685 
0686         if (!__pskb_pull_tail(skb, delta))
0687             goto drop_packet;
0688 
0689         frag_count = 1 + skb_shinfo(skb)->nr_frags;
0690     }
0691 
0692     if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
0693         netif_tx_stop_queue(tx_ring->txq);
0694         if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
0695             netif_tx_start_queue(tx_ring->txq);
0696         } else {
0697             tx_ring->tx_stats.xmit_off++;
0698             return NETDEV_TX_BUSY;
0699         }
0700     }
0701 
0702     producer = tx_ring->producer;
0703     pbuf = &tx_ring->cmd_buf_arr[producer];
0704     pdev = adapter->pdev;
0705     first_desc = &tx_ring->desc_head[producer];
0706     hwdesc = &tx_ring->desc_head[producer];
0707     qlcnic_clear_cmddesc((u64 *)hwdesc);
0708 
0709     if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
0710         adapter->stats.tx_dma_map_error++;
0711         goto drop_packet;
0712     }
0713 
0714     pbuf->skb = skb;
0715     pbuf->frag_count = frag_count;
0716 
0717     qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
0718     qlcnic_set_tx_port(first_desc, adapter->portnum);
0719 
0720     for (i = 0; i < frag_count; i++) {
0721         k = i % 4;
0722 
0723         if ((k == 0) && (i > 0)) {
0724             /* move to next desc.*/
0725             producer = get_next_index(producer, num_txd);
0726             hwdesc = &tx_ring->desc_head[producer];
0727             qlcnic_clear_cmddesc((u64 *)hwdesc);
0728             tx_ring->cmd_buf_arr[producer].skb = NULL;
0729         }
0730 
0731         buffrag = &pbuf->frag_array[i];
0732         hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
0733         switch (k) {
0734         case 0:
0735             hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
0736             break;
0737         case 1:
0738             hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
0739             break;
0740         case 2:
0741             hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
0742             break;
0743         case 3:
0744             hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
0745             break;
0746         }
0747     }
0748 
0749     tx_ring->producer = get_next_index(producer, num_txd);
0750     smp_mb();
0751 
0752     protocol = ntohs(skb->protocol);
0753     if (protocol == ETH_P_IP)
0754         l4_is_udp = ip_hdr(skb)->protocol == IPPROTO_UDP;
0755     else if (protocol == ETH_P_IPV6)
0756         l4_is_udp = ipv6_hdr(skb)->nexthdr == IPPROTO_UDP;
0757 
0758     /* Check if it is a VXLAN packet */
0759     if (!skb->encapsulation || !l4_is_udp ||
0760         !qlcnic_encap_tx_offload(adapter)) {
0761         if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb,
0762                        tx_ring)))
0763             goto unwind_buff;
0764     } else {
0765         if (unlikely(qlcnic_tx_encap_pkt(adapter, first_desc,
0766                          skb, tx_ring)))
0767             goto unwind_buff;
0768     }
0769 
0770     if (adapter->drv_mac_learn)
0771         qlcnic_send_filter(adapter, first_desc, skb, tx_ring);
0772 
0773     tx_ring->tx_stats.tx_bytes += skb->len;
0774     tx_ring->tx_stats.xmit_called++;
0775 
0776     /* Ensure writes are complete before HW fetches Tx descriptors */
0777     wmb();
0778     qlcnic_update_cmd_producer(tx_ring);
0779 
0780     return NETDEV_TX_OK;
0781 
0782 unwind_buff:
0783     qlcnic_unmap_buffers(pdev, skb, pbuf);
0784 drop_packet:
0785     adapter->stats.txdropped++;
0786     dev_kfree_skb_any(skb);
0787     return NETDEV_TX_OK;
0788 }
0789 
0790 void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
0791 {
0792     struct net_device *netdev = adapter->netdev;
0793 
0794     if (adapter->ahw->linkup && !linkup) {
0795         netdev_info(netdev, "NIC Link is down\n");
0796         adapter->ahw->linkup = 0;
0797         netif_carrier_off(netdev);
0798     } else if (!adapter->ahw->linkup && linkup) {
0799         adapter->ahw->linkup = 1;
0800 
0801         /* Do not advertise Link up to the stack if device
0802          * is in loopback mode
0803          */
0804         if (qlcnic_83xx_check(adapter) && adapter->ahw->lb_mode) {
0805             netdev_info(netdev, "NIC Link is up for loopback test\n");
0806             return;
0807         }
0808 
0809         netdev_info(netdev, "NIC Link is up\n");
0810         netif_carrier_on(netdev);
0811     }
0812 }
0813 
0814 static int qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
0815                    struct qlcnic_host_rds_ring *rds_ring,
0816                    struct qlcnic_rx_buffer *buffer)
0817 {
0818     struct sk_buff *skb;
0819     dma_addr_t dma;
0820     struct pci_dev *pdev = adapter->pdev;
0821 
0822     skb = netdev_alloc_skb(adapter->netdev, rds_ring->skb_size);
0823     if (!skb) {
0824         adapter->stats.skb_alloc_failure++;
0825         return -ENOMEM;
0826     }
0827 
0828     skb_reserve(skb, NET_IP_ALIGN);
0829     dma = dma_map_single(&pdev->dev, skb->data, rds_ring->dma_size,
0830                  DMA_FROM_DEVICE);
0831 
0832     if (dma_mapping_error(&pdev->dev, dma)) {
0833         adapter->stats.rx_dma_map_error++;
0834         dev_kfree_skb_any(skb);
0835         return -ENOMEM;
0836     }
0837 
0838     buffer->skb = skb;
0839     buffer->dma = dma;
0840 
0841     return 0;
0842 }
0843 
0844 static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
0845                     struct qlcnic_host_rds_ring *rds_ring,
0846                     u8 ring_id)
0847 {
0848     struct rcv_desc *pdesc;
0849     struct qlcnic_rx_buffer *buffer;
0850     int  count = 0;
0851     uint32_t producer, handle;
0852     struct list_head *head;
0853 
0854     if (!spin_trylock(&rds_ring->lock))
0855         return;
0856 
0857     producer = rds_ring->producer;
0858     head = &rds_ring->free_list;
0859     while (!list_empty(head)) {
0860         buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
0861 
0862         if (!buffer->skb) {
0863             if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
0864                 break;
0865         }
0866         count++;
0867         list_del(&buffer->list);
0868 
0869         /* make a rcv descriptor  */
0870         pdesc = &rds_ring->desc_head[producer];
0871         handle = qlcnic_get_ref_handle(adapter,
0872                            buffer->ref_handle, ring_id);
0873         pdesc->reference_handle = cpu_to_le16(handle);
0874         pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
0875         pdesc->addr_buffer = cpu_to_le64(buffer->dma);
0876         producer = get_next_index(producer, rds_ring->num_desc);
0877     }
0878     if (count) {
0879         rds_ring->producer = producer;
0880         writel((producer - 1) & (rds_ring->num_desc - 1),
0881                rds_ring->crb_rcv_producer);
0882     }
0883     spin_unlock(&rds_ring->lock);
0884 }
0885 
0886 static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter,
0887                    struct qlcnic_host_tx_ring *tx_ring,
0888                    int budget)
0889 {
0890     u32 sw_consumer, hw_consumer;
0891     int i, done, count = 0;
0892     struct qlcnic_cmd_buffer *buffer;
0893     struct pci_dev *pdev = adapter->pdev;
0894     struct net_device *netdev = adapter->netdev;
0895     struct qlcnic_skb_frag *frag;
0896 
0897     if (!spin_trylock(&tx_ring->tx_clean_lock))
0898         return 1;
0899 
0900     sw_consumer = tx_ring->sw_consumer;
0901     hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
0902 
0903     while (sw_consumer != hw_consumer) {
0904         buffer = &tx_ring->cmd_buf_arr[sw_consumer];
0905         if (buffer->skb) {
0906             frag = &buffer->frag_array[0];
0907             dma_unmap_single(&pdev->dev, frag->dma, frag->length,
0908                      DMA_TO_DEVICE);
0909             frag->dma = 0ULL;
0910             for (i = 1; i < buffer->frag_count; i++) {
0911                 frag++;
0912                 dma_unmap_page(&pdev->dev, frag->dma,
0913                            frag->length, DMA_TO_DEVICE);
0914                 frag->dma = 0ULL;
0915             }
0916             tx_ring->tx_stats.xmit_finished++;
0917             dev_kfree_skb_any(buffer->skb);
0918             buffer->skb = NULL;
0919         }
0920 
0921         sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
0922         if (++count >= budget)
0923             break;
0924     }
0925 
0926     tx_ring->sw_consumer = sw_consumer;
0927 
0928     if (count && netif_running(netdev)) {
0929         smp_mb();
0930         if (netif_tx_queue_stopped(tx_ring->txq) &&
0931             netif_carrier_ok(netdev)) {
0932             if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
0933                 netif_tx_wake_queue(tx_ring->txq);
0934                 tx_ring->tx_stats.xmit_on++;
0935             }
0936         }
0937         adapter->tx_timeo_cnt = 0;
0938     }
0939     /*
0940      * If everything is freed up to consumer then check if the ring is full
0941      * If the ring is full then check if more needs to be freed and
0942      * schedule the call back again.
0943      *
0944      * This happens when there are 2 CPUs. One could be freeing and the
0945      * other filling it. If the ring is full when we get out of here and
0946      * the card has already interrupted the host then the host can miss the
0947      * interrupt.
0948      *
0949      * There is still a possible race condition and the host could miss an
0950      * interrupt. The card has to take care of this.
0951      */
0952     hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
0953     done = (sw_consumer == hw_consumer);
0954 
0955     spin_unlock(&tx_ring->tx_clean_lock);
0956 
0957     return done;
0958 }
0959 
0960 static int qlcnic_poll(struct napi_struct *napi, int budget)
0961 {
0962     int tx_complete, work_done;
0963     struct qlcnic_host_sds_ring *sds_ring;
0964     struct qlcnic_adapter *adapter;
0965     struct qlcnic_host_tx_ring *tx_ring;
0966 
0967     sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
0968     adapter = sds_ring->adapter;
0969     tx_ring = sds_ring->tx_ring;
0970 
0971     tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring,
0972                           budget);
0973     work_done = qlcnic_process_rcv_ring(sds_ring, budget);
0974 
0975     /* Check if we need a repoll */
0976     if (!tx_complete)
0977         work_done = budget;
0978 
0979     if (work_done < budget) {
0980         napi_complete_done(&sds_ring->napi, work_done);
0981         if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
0982             qlcnic_enable_sds_intr(adapter, sds_ring);
0983             qlcnic_enable_tx_intr(adapter, tx_ring);
0984         }
0985     }
0986 
0987     return work_done;
0988 }
0989 
0990 static int qlcnic_tx_poll(struct napi_struct *napi, int budget)
0991 {
0992     struct qlcnic_host_tx_ring *tx_ring;
0993     struct qlcnic_adapter *adapter;
0994     int work_done;
0995 
0996     tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi);
0997     adapter = tx_ring->adapter;
0998 
0999     work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1000     if (work_done) {
1001         napi_complete(&tx_ring->napi);
1002         if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1003             qlcnic_enable_tx_intr(adapter, tx_ring);
1004     } else {
1005         /* As qlcnic_process_cmd_ring() returned 0, we need a repoll*/
1006         work_done = budget;
1007     }
1008 
1009     return work_done;
1010 }
1011 
1012 static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
1013 {
1014     struct qlcnic_host_sds_ring *sds_ring;
1015     struct qlcnic_adapter *adapter;
1016     int work_done;
1017 
1018     sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1019     adapter = sds_ring->adapter;
1020 
1021     work_done = qlcnic_process_rcv_ring(sds_ring, budget);
1022 
1023     if (work_done < budget) {
1024         napi_complete_done(&sds_ring->napi, work_done);
1025         if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
1026             qlcnic_enable_sds_intr(adapter, sds_ring);
1027     }
1028 
1029     return work_done;
1030 }
1031 
1032 static void qlcnic_handle_linkevent(struct qlcnic_adapter *adapter,
1033                     struct qlcnic_fw_msg *msg)
1034 {
1035     u32 cable_OUI;
1036     u16 cable_len, link_speed;
1037     u8  link_status, module, duplex, autoneg, lb_status = 0;
1038     struct net_device *netdev = adapter->netdev;
1039 
1040     adapter->ahw->has_link_events = 1;
1041 
1042     cable_OUI = msg->body[1] & 0xffffffff;
1043     cable_len = (msg->body[1] >> 32) & 0xffff;
1044     link_speed = (msg->body[1] >> 48) & 0xffff;
1045 
1046     link_status = msg->body[2] & 0xff;
1047     duplex = (msg->body[2] >> 16) & 0xff;
1048     autoneg = (msg->body[2] >> 24) & 0xff;
1049     lb_status = (msg->body[2] >> 32) & 0x3;
1050 
1051     module = (msg->body[2] >> 8) & 0xff;
1052     if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE)
1053         dev_info(&netdev->dev,
1054              "unsupported cable: OUI 0x%x, length %d\n",
1055              cable_OUI, cable_len);
1056     else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN)
1057         dev_info(&netdev->dev, "unsupported cable length %d\n",
1058              cable_len);
1059 
1060     if (!link_status && (lb_status == QLCNIC_ILB_MODE ||
1061         lb_status == QLCNIC_ELB_MODE))
1062         adapter->ahw->loopback_state |= QLCNIC_LINKEVENT;
1063 
1064     qlcnic_advert_link_change(adapter, link_status);
1065 
1066     if (duplex == LINKEVENT_FULL_DUPLEX)
1067         adapter->ahw->link_duplex = DUPLEX_FULL;
1068     else
1069         adapter->ahw->link_duplex = DUPLEX_HALF;
1070 
1071     adapter->ahw->module_type = module;
1072     adapter->ahw->link_autoneg = autoneg;
1073 
1074     if (link_status) {
1075         adapter->ahw->link_speed = link_speed;
1076     } else {
1077         adapter->ahw->link_speed = SPEED_UNKNOWN;
1078         adapter->ahw->link_duplex = DUPLEX_UNKNOWN;
1079     }
1080 }
1081 
1082 static void qlcnic_handle_fw_message(int desc_cnt, int index,
1083                      struct qlcnic_host_sds_ring *sds_ring)
1084 {
1085     struct qlcnic_fw_msg msg;
1086     struct status_desc *desc;
1087     struct qlcnic_adapter *adapter;
1088     struct device *dev;
1089     int i = 0, opcode, ret;
1090 
1091     while (desc_cnt > 0 && i < 8) {
1092         desc = &sds_ring->desc_head[index];
1093         msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
1094         msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);
1095 
1096         index = get_next_index(index, sds_ring->num_desc);
1097         desc_cnt--;
1098     }
1099 
1100     adapter = sds_ring->adapter;
1101     dev = &adapter->pdev->dev;
1102     opcode = qlcnic_get_nic_msg_opcode(msg.body[0]);
1103 
1104     switch (opcode) {
1105     case QLCNIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
1106         qlcnic_handle_linkevent(adapter, &msg);
1107         break;
1108     case QLCNIC_C2H_OPCODE_CONFIG_LOOPBACK:
1109         ret = (u32)(msg.body[1]);
1110         switch (ret) {
1111         case 0:
1112             adapter->ahw->loopback_state |= QLCNIC_LB_RESPONSE;
1113             break;
1114         case 1:
1115             dev_info(dev, "loopback already in progress\n");
1116             adapter->ahw->diag_cnt = -EINPROGRESS;
1117             break;
1118         case 2:
1119             dev_info(dev, "loopback cable is not connected\n");
1120             adapter->ahw->diag_cnt = -ENODEV;
1121             break;
1122         default:
1123             dev_info(dev,
1124                  "loopback configure request failed, err %x\n",
1125                  ret);
1126             adapter->ahw->diag_cnt = -EIO;
1127             break;
1128         }
1129         break;
1130     case QLCNIC_C2H_OPCODE_GET_DCB_AEN:
1131         qlcnic_dcb_aen_handler(adapter->dcb, (void *)&msg);
1132         break;
1133     default:
1134         break;
1135     }
1136 }
1137 
1138 static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
1139                         struct qlcnic_host_rds_ring *ring,
1140                         u16 index, u16 cksum)
1141 {
1142     struct qlcnic_rx_buffer *buffer;
1143     struct sk_buff *skb;
1144 
1145     buffer = &ring->rx_buf_arr[index];
1146     if (unlikely(buffer->skb == NULL)) {
1147         WARN_ON(1);
1148         return NULL;
1149     }
1150 
1151     dma_unmap_single(&adapter->pdev->dev, buffer->dma, ring->dma_size,
1152              DMA_FROM_DEVICE);
1153 
1154     skb = buffer->skb;
1155     if (likely((adapter->netdev->features & NETIF_F_RXCSUM) &&
1156            (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) {
1157         adapter->stats.csummed++;
1158         skb->ip_summed = CHECKSUM_UNNECESSARY;
1159     } else {
1160         skb_checksum_none_assert(skb);
1161     }
1162 
1163 
1164     buffer->skb = NULL;
1165 
1166     return skb;
1167 }
1168 
1169 static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter,
1170                       struct sk_buff *skb, u16 *vlan_tag)
1171 {
1172     struct ethhdr *eth_hdr;
1173 
1174     if (!__vlan_get_tag(skb, vlan_tag)) {
1175         eth_hdr = (struct ethhdr *)skb->data;
1176         memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2);
1177         skb_pull(skb, VLAN_HLEN);
1178     }
1179     if (!adapter->rx_pvid)
1180         return 0;
1181 
1182     if (*vlan_tag == adapter->rx_pvid) {
1183         /* Outer vlan tag. Packet should follow non-vlan path */
1184         *vlan_tag = 0xffff;
1185         return 0;
1186     }
1187     if (adapter->flags & QLCNIC_TAGGING_ENABLED)
1188         return 0;
1189 
1190     return -EINVAL;
1191 }
1192 
1193 static struct qlcnic_rx_buffer *
1194 qlcnic_process_rcv(struct qlcnic_adapter *adapter,
1195            struct qlcnic_host_sds_ring *sds_ring, int ring,
1196            u64 sts_data0)
1197 {
1198     struct net_device *netdev = adapter->netdev;
1199     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1200     struct qlcnic_rx_buffer *buffer;
1201     struct sk_buff *skb;
1202     struct qlcnic_host_rds_ring *rds_ring;
1203     int index, length, cksum, pkt_offset, is_lb_pkt;
1204     u16 vid = 0xffff, t_vid;
1205 
1206     if (unlikely(ring >= adapter->max_rds_rings))
1207         return NULL;
1208 
1209     rds_ring = &recv_ctx->rds_rings[ring];
1210 
1211     index = qlcnic_get_sts_refhandle(sts_data0);
1212     if (unlikely(index >= rds_ring->num_desc))
1213         return NULL;
1214 
1215     buffer = &rds_ring->rx_buf_arr[index];
1216     length = qlcnic_get_sts_totallength(sts_data0);
1217     cksum  = qlcnic_get_sts_status(sts_data0);
1218     pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1219 
1220     skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1221     if (!skb)
1222         return buffer;
1223 
1224     if (adapter->rx_mac_learn) {
1225         t_vid = 0;
1226         is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0);
1227         qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid);
1228     }
1229 
1230     if (length > rds_ring->skb_size)
1231         skb_put(skb, rds_ring->skb_size);
1232     else
1233         skb_put(skb, length);
1234 
1235     if (pkt_offset)
1236         skb_pull(skb, pkt_offset);
1237 
1238     if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1239         adapter->stats.rxdropped++;
1240         dev_kfree_skb(skb);
1241         return buffer;
1242     }
1243 
1244     skb->protocol = eth_type_trans(skb, netdev);
1245 
1246     if (vid != 0xffff)
1247         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1248 
1249     napi_gro_receive(&sds_ring->napi, skb);
1250 
1251     adapter->stats.rx_pkts++;
1252     adapter->stats.rxbytes += length;
1253 
1254     return buffer;
1255 }
1256 
1257 #define QLC_TCP_HDR_SIZE            20
1258 #define QLC_TCP_TS_OPTION_SIZE      12
1259 #define QLC_TCP_TS_HDR_SIZE         (QLC_TCP_HDR_SIZE + QLC_TCP_TS_OPTION_SIZE)
1260 
1261 static struct qlcnic_rx_buffer *
1262 qlcnic_process_lro(struct qlcnic_adapter *adapter,
1263            int ring, u64 sts_data0, u64 sts_data1)
1264 {
1265     struct net_device *netdev = adapter->netdev;
1266     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1267     struct qlcnic_rx_buffer *buffer;
1268     struct sk_buff *skb;
1269     struct qlcnic_host_rds_ring *rds_ring;
1270     struct iphdr *iph;
1271     struct ipv6hdr *ipv6h;
1272     struct tcphdr *th;
1273     bool push, timestamp;
1274     int index, l2_hdr_offset, l4_hdr_offset, is_lb_pkt;
1275     u16 lro_length, length, data_offset, t_vid, vid = 0xffff;
1276     u32 seq_number;
1277 
1278     if (unlikely(ring >= adapter->max_rds_rings))
1279         return NULL;
1280 
1281     rds_ring = &recv_ctx->rds_rings[ring];
1282 
1283     index = qlcnic_get_lro_sts_refhandle(sts_data0);
1284     if (unlikely(index >= rds_ring->num_desc))
1285         return NULL;
1286 
1287     buffer = &rds_ring->rx_buf_arr[index];
1288 
1289     timestamp = qlcnic_get_lro_sts_timestamp(sts_data0);
1290     lro_length = qlcnic_get_lro_sts_length(sts_data0);
1291     l2_hdr_offset = qlcnic_get_lro_sts_l2_hdr_offset(sts_data0);
1292     l4_hdr_offset = qlcnic_get_lro_sts_l4_hdr_offset(sts_data0);
1293     push = qlcnic_get_lro_sts_push_flag(sts_data0);
1294     seq_number = qlcnic_get_lro_sts_seq_number(sts_data1);
1295 
1296     skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1297     if (!skb)
1298         return buffer;
1299 
1300     if (adapter->rx_mac_learn) {
1301         t_vid = 0;
1302         is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0);
1303         qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, t_vid);
1304     }
1305 
1306     if (timestamp)
1307         data_offset = l4_hdr_offset + QLC_TCP_TS_HDR_SIZE;
1308     else
1309         data_offset = l4_hdr_offset + QLC_TCP_HDR_SIZE;
1310 
1311     skb_put(skb, lro_length + data_offset);
1312     skb_pull(skb, l2_hdr_offset);
1313 
1314     if (unlikely(qlcnic_check_rx_tagging(adapter, skb, &vid))) {
1315         adapter->stats.rxdropped++;
1316         dev_kfree_skb(skb);
1317         return buffer;
1318     }
1319 
1320     skb->protocol = eth_type_trans(skb, netdev);
1321 
1322     if (ntohs(skb->protocol) == ETH_P_IPV6) {
1323         ipv6h = (struct ipv6hdr *)skb->data;
1324         th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr));
1325         length = (th->doff << 2) + lro_length;
1326         ipv6h->payload_len = htons(length);
1327     } else {
1328         iph = (struct iphdr *)skb->data;
1329         th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1330         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1331         csum_replace2(&iph->check, iph->tot_len, htons(length));
1332         iph->tot_len = htons(length);
1333     }
1334 
1335     th->psh = push;
1336     th->seq = htonl(seq_number);
1337     length = skb->len;
1338 
1339     if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) {
1340         skb_shinfo(skb)->gso_size = qlcnic_get_lro_sts_mss(sts_data1);
1341         if (skb->protocol == htons(ETH_P_IPV6))
1342             skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
1343         else
1344             skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
1345     }
1346 
1347     if (vid != 0xffff)
1348         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1349     netif_receive_skb(skb);
1350 
1351     adapter->stats.lro_pkts++;
1352     adapter->stats.lrobytes += length;
1353 
1354     return buffer;
1355 }
1356 
1357 static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
1358 {
1359     struct qlcnic_host_rds_ring *rds_ring;
1360     struct qlcnic_adapter *adapter = sds_ring->adapter;
1361     struct list_head *cur;
1362     struct status_desc *desc;
1363     struct qlcnic_rx_buffer *rxbuf;
1364     int opcode, desc_cnt, count = 0;
1365     u64 sts_data0, sts_data1;
1366     u8 ring;
1367     u32 consumer = sds_ring->consumer;
1368 
1369     while (count < max) {
1370         desc = &sds_ring->desc_head[consumer];
1371         sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1372 
1373         if (!(sts_data0 & STATUS_OWNER_HOST))
1374             break;
1375 
1376         desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1377         opcode = qlcnic_get_sts_opcode(sts_data0);
1378         switch (opcode) {
1379         case QLCNIC_RXPKT_DESC:
1380         case QLCNIC_OLD_RXPKT_DESC:
1381         case QLCNIC_SYN_OFFLOAD:
1382             ring = qlcnic_get_sts_type(sts_data0);
1383             rxbuf = qlcnic_process_rcv(adapter, sds_ring, ring,
1384                            sts_data0);
1385             break;
1386         case QLCNIC_LRO_DESC:
1387             ring = qlcnic_get_lro_sts_type(sts_data0);
1388             sts_data1 = le64_to_cpu(desc->status_desc_data[1]);
1389             rxbuf = qlcnic_process_lro(adapter, ring, sts_data0,
1390                            sts_data1);
1391             break;
1392         case QLCNIC_RESPONSE_DESC:
1393             qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1394             goto skip;
1395         default:
1396             goto skip;
1397         }
1398         WARN_ON(desc_cnt > 1);
1399 
1400         if (likely(rxbuf))
1401             list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1402         else
1403             adapter->stats.null_rxbuf++;
1404 skip:
1405         for (; desc_cnt > 0; desc_cnt--) {
1406             desc = &sds_ring->desc_head[consumer];
1407             desc->status_desc_data[0] = QLCNIC_DESC_OWNER_FW;
1408             consumer = get_next_index(consumer, sds_ring->num_desc);
1409         }
1410         count++;
1411     }
1412 
1413     for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1414         rds_ring = &adapter->recv_ctx->rds_rings[ring];
1415         if (!list_empty(&sds_ring->free_list[ring])) {
1416             list_for_each(cur, &sds_ring->free_list[ring]) {
1417                 rxbuf = list_entry(cur, struct qlcnic_rx_buffer,
1418                            list);
1419                 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1420             }
1421             spin_lock(&rds_ring->lock);
1422             list_splice_tail_init(&sds_ring->free_list[ring],
1423                           &rds_ring->free_list);
1424             spin_unlock(&rds_ring->lock);
1425         }
1426 
1427         qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring);
1428     }
1429 
1430     if (count) {
1431         sds_ring->consumer = consumer;
1432         writel(consumer, sds_ring->crb_sts_consumer);
1433     }
1434 
1435     return count;
1436 }
1437 
1438 void qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter,
1439                 struct qlcnic_host_rds_ring *rds_ring, u8 ring_id)
1440 {
1441     struct rcv_desc *pdesc;
1442     struct qlcnic_rx_buffer *buffer;
1443     int count = 0;
1444     u32 producer, handle;
1445     struct list_head *head;
1446 
1447     producer = rds_ring->producer;
1448     head = &rds_ring->free_list;
1449 
1450     while (!list_empty(head)) {
1451 
1452         buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
1453 
1454         if (!buffer->skb) {
1455             if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
1456                 break;
1457         }
1458 
1459         count++;
1460         list_del(&buffer->list);
1461 
1462         /* make a rcv descriptor  */
1463         pdesc = &rds_ring->desc_head[producer];
1464         pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1465         handle = qlcnic_get_ref_handle(adapter, buffer->ref_handle,
1466                            ring_id);
1467         pdesc->reference_handle = cpu_to_le16(handle);
1468         pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1469         producer = get_next_index(producer, rds_ring->num_desc);
1470     }
1471 
1472     if (count) {
1473         rds_ring->producer = producer;
1474         writel((producer-1) & (rds_ring->num_desc-1),
1475                rds_ring->crb_rcv_producer);
1476     }
1477 }
1478 
1479 static void dump_skb(struct sk_buff *skb, struct qlcnic_adapter *adapter)
1480 {
1481     if (adapter->ahw->msg_enable & NETIF_MSG_DRV) {
1482         char prefix[30];
1483 
1484         scnprintf(prefix, sizeof(prefix), "%s: %s: ",
1485               dev_name(&adapter->pdev->dev), __func__);
1486 
1487         print_hex_dump_debug(prefix, DUMP_PREFIX_NONE, 16, 1,
1488                      skb->data, skb->len, true);
1489     }
1490 }
1491 
1492 static void qlcnic_process_rcv_diag(struct qlcnic_adapter *adapter, int ring,
1493                     u64 sts_data0)
1494 {
1495     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1496     struct sk_buff *skb;
1497     struct qlcnic_host_rds_ring *rds_ring;
1498     int index, length, cksum, pkt_offset;
1499 
1500     if (unlikely(ring >= adapter->max_rds_rings))
1501         return;
1502 
1503     rds_ring = &recv_ctx->rds_rings[ring];
1504 
1505     index = qlcnic_get_sts_refhandle(sts_data0);
1506     length = qlcnic_get_sts_totallength(sts_data0);
1507     if (unlikely(index >= rds_ring->num_desc))
1508         return;
1509 
1510     cksum  = qlcnic_get_sts_status(sts_data0);
1511     pkt_offset = qlcnic_get_sts_pkt_offset(sts_data0);
1512 
1513     skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1514     if (!skb)
1515         return;
1516 
1517     if (length > rds_ring->skb_size)
1518         skb_put(skb, rds_ring->skb_size);
1519     else
1520         skb_put(skb, length);
1521 
1522     if (pkt_offset)
1523         skb_pull(skb, pkt_offset);
1524 
1525     if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
1526         adapter->ahw->diag_cnt++;
1527     else
1528         dump_skb(skb, adapter);
1529 
1530     dev_kfree_skb_any(skb);
1531     adapter->stats.rx_pkts++;
1532     adapter->stats.rxbytes += length;
1533 
1534     return;
1535 }
1536 
1537 void qlcnic_82xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
1538 {
1539     struct qlcnic_adapter *adapter = sds_ring->adapter;
1540     struct status_desc *desc;
1541     u64 sts_data0;
1542     int ring, opcode, desc_cnt;
1543 
1544     u32 consumer = sds_ring->consumer;
1545 
1546     desc = &sds_ring->desc_head[consumer];
1547     sts_data0 = le64_to_cpu(desc->status_desc_data[0]);
1548 
1549     if (!(sts_data0 & STATUS_OWNER_HOST))
1550         return;
1551 
1552     desc_cnt = qlcnic_get_sts_desc_cnt(sts_data0);
1553     opcode = qlcnic_get_sts_opcode(sts_data0);
1554     switch (opcode) {
1555     case QLCNIC_RESPONSE_DESC:
1556         qlcnic_handle_fw_message(desc_cnt, consumer, sds_ring);
1557         break;
1558     default:
1559         ring = qlcnic_get_sts_type(sts_data0);
1560         qlcnic_process_rcv_diag(adapter, ring, sts_data0);
1561         break;
1562     }
1563 
1564     for (; desc_cnt > 0; desc_cnt--) {
1565         desc = &sds_ring->desc_head[consumer];
1566         desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
1567         consumer = get_next_index(consumer, sds_ring->num_desc);
1568     }
1569 
1570     sds_ring->consumer = consumer;
1571     writel(consumer, sds_ring->crb_sts_consumer);
1572 }
1573 
1574 int qlcnic_82xx_napi_add(struct qlcnic_adapter *adapter,
1575              struct net_device *netdev)
1576 {
1577     int ring;
1578     struct qlcnic_host_sds_ring *sds_ring;
1579     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1580     struct qlcnic_host_tx_ring *tx_ring;
1581 
1582     if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings))
1583         return -ENOMEM;
1584 
1585     for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1586         sds_ring = &recv_ctx->sds_rings[ring];
1587         if (qlcnic_check_multi_tx(adapter) &&
1588             !adapter->ahw->diag_test) {
1589             netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll,
1590                        NAPI_POLL_WEIGHT);
1591         } else {
1592             if (ring == (adapter->drv_sds_rings - 1))
1593                 netif_napi_add(netdev, &sds_ring->napi,
1594                            qlcnic_poll,
1595                            NAPI_POLL_WEIGHT);
1596             else
1597                 netif_napi_add(netdev, &sds_ring->napi,
1598                            qlcnic_rx_poll,
1599                            NAPI_POLL_WEIGHT);
1600         }
1601     }
1602 
1603     if (qlcnic_alloc_tx_rings(adapter, netdev)) {
1604         qlcnic_free_sds_rings(recv_ctx);
1605         return -ENOMEM;
1606     }
1607 
1608     if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) {
1609         for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1610             tx_ring = &adapter->tx_ring[ring];
1611             netif_napi_add_tx(netdev, &tx_ring->napi,
1612                       qlcnic_tx_poll);
1613         }
1614     }
1615 
1616     return 0;
1617 }
1618 
1619 void qlcnic_82xx_napi_del(struct qlcnic_adapter *adapter)
1620 {
1621     int ring;
1622     struct qlcnic_host_sds_ring *sds_ring;
1623     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1624     struct qlcnic_host_tx_ring *tx_ring;
1625 
1626     for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1627         sds_ring = &recv_ctx->sds_rings[ring];
1628         netif_napi_del(&sds_ring->napi);
1629     }
1630 
1631     qlcnic_free_sds_rings(adapter->recv_ctx);
1632 
1633     if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) {
1634         for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1635             tx_ring = &adapter->tx_ring[ring];
1636             netif_napi_del(&tx_ring->napi);
1637         }
1638     }
1639 
1640     qlcnic_free_tx_rings(adapter);
1641 }
1642 
1643 void qlcnic_82xx_napi_enable(struct qlcnic_adapter *adapter)
1644 {
1645     int ring;
1646     struct qlcnic_host_sds_ring *sds_ring;
1647     struct qlcnic_host_tx_ring *tx_ring;
1648     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1649 
1650     if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1651         return;
1652 
1653     for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1654         sds_ring = &recv_ctx->sds_rings[ring];
1655         napi_enable(&sds_ring->napi);
1656         qlcnic_enable_sds_intr(adapter, sds_ring);
1657     }
1658 
1659     if (qlcnic_check_multi_tx(adapter) &&
1660         (adapter->flags & QLCNIC_MSIX_ENABLED) &&
1661         !adapter->ahw->diag_test) {
1662         for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1663             tx_ring = &adapter->tx_ring[ring];
1664             napi_enable(&tx_ring->napi);
1665             qlcnic_enable_tx_intr(adapter, tx_ring);
1666         }
1667     }
1668 }
1669 
1670 void qlcnic_82xx_napi_disable(struct qlcnic_adapter *adapter)
1671 {
1672     int ring;
1673     struct qlcnic_host_sds_ring *sds_ring;
1674     struct qlcnic_host_tx_ring *tx_ring;
1675     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1676 
1677     if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1678         return;
1679 
1680     for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
1681         sds_ring = &recv_ctx->sds_rings[ring];
1682         qlcnic_disable_sds_intr(adapter, sds_ring);
1683         napi_synchronize(&sds_ring->napi);
1684         napi_disable(&sds_ring->napi);
1685     }
1686 
1687     if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
1688         !adapter->ahw->diag_test &&
1689         qlcnic_check_multi_tx(adapter)) {
1690         for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
1691             tx_ring = &adapter->tx_ring[ring];
1692             qlcnic_disable_tx_intr(adapter, tx_ring);
1693             napi_synchronize(&tx_ring->napi);
1694             napi_disable(&tx_ring->napi);
1695         }
1696     }
1697 }
1698 
1699 #define QLC_83XX_NORMAL_LB_PKT  (1ULL << 36)
1700 #define QLC_83XX_LRO_LB_PKT (1ULL << 46)
1701 
1702 static inline int qlcnic_83xx_is_lb_pkt(u64 sts_data, int lro_pkt)
1703 {
1704     if (lro_pkt)
1705         return (sts_data & QLC_83XX_LRO_LB_PKT) ? 1 : 0;
1706     else
1707         return (sts_data & QLC_83XX_NORMAL_LB_PKT) ? 1 : 0;
1708 }
1709 
1710 #define QLCNIC_ENCAP_LENGTH_MASK    0x7f
1711 
1712 static inline u8 qlcnic_encap_length(u64 sts_data)
1713 {
1714     return sts_data & QLCNIC_ENCAP_LENGTH_MASK;
1715 }
1716 
1717 static struct qlcnic_rx_buffer *
1718 qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter,
1719             struct qlcnic_host_sds_ring *sds_ring,
1720             u8 ring, u64 sts_data[])
1721 {
1722     struct net_device *netdev = adapter->netdev;
1723     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1724     struct qlcnic_rx_buffer *buffer;
1725     struct sk_buff *skb;
1726     struct qlcnic_host_rds_ring *rds_ring;
1727     int index, length, cksum, is_lb_pkt;
1728     u16 vid = 0xffff;
1729     int err;
1730 
1731     if (unlikely(ring >= adapter->max_rds_rings))
1732         return NULL;
1733 
1734     rds_ring = &recv_ctx->rds_rings[ring];
1735 
1736     index = qlcnic_83xx_hndl(sts_data[0]);
1737     if (unlikely(index >= rds_ring->num_desc))
1738         return NULL;
1739 
1740     buffer = &rds_ring->rx_buf_arr[index];
1741     length = qlcnic_83xx_pktln(sts_data[0]);
1742     cksum  = qlcnic_83xx_csum_status(sts_data[1]);
1743     skb = qlcnic_process_rxbuf(adapter, rds_ring, index, cksum);
1744     if (!skb)
1745         return buffer;
1746 
1747     if (length > rds_ring->skb_size)
1748         skb_put(skb, rds_ring->skb_size);
1749     else
1750         skb_put(skb, length);
1751 
1752     err = qlcnic_check_rx_tagging(adapter, skb, &vid);
1753 
1754     if (adapter->rx_mac_learn) {
1755         is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 0);
1756         qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid);
1757     }
1758 
1759     if (unlikely(err)) {
1760         adapter->stats.rxdropped++;
1761         dev_kfree_skb(skb);
1762         return buffer;
1763     }
1764 
1765     skb->protocol = eth_type_trans(skb, netdev);
1766 
1767     if (qlcnic_encap_length(sts_data[1]) &&
1768         skb->ip_summed == CHECKSUM_UNNECESSARY) {
1769         skb->csum_level = 1;
1770         adapter->stats.encap_rx_csummed++;
1771     }
1772 
1773     if (vid != 0xffff)
1774         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1775 
1776     napi_gro_receive(&sds_ring->napi, skb);
1777 
1778     adapter->stats.rx_pkts++;
1779     adapter->stats.rxbytes += length;
1780 
1781     return buffer;
1782 }
1783 
1784 static struct qlcnic_rx_buffer *
1785 qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
1786             u8 ring, u64 sts_data[])
1787 {
1788     struct net_device *netdev = adapter->netdev;
1789     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
1790     struct qlcnic_rx_buffer *buffer;
1791     struct sk_buff *skb;
1792     struct qlcnic_host_rds_ring *rds_ring;
1793     struct iphdr *iph;
1794     struct ipv6hdr *ipv6h;
1795     struct tcphdr *th;
1796     bool push;
1797     int l2_hdr_offset, l4_hdr_offset;
1798     int index, is_lb_pkt;
1799     u16 lro_length, length, data_offset, gso_size;
1800     u16 vid = 0xffff;
1801     int err;
1802 
1803     if (unlikely(ring >= adapter->max_rds_rings))
1804         return NULL;
1805 
1806     rds_ring = &recv_ctx->rds_rings[ring];
1807 
1808     index = qlcnic_83xx_hndl(sts_data[0]);
1809     if (unlikely(index >= rds_ring->num_desc))
1810         return NULL;
1811 
1812     buffer = &rds_ring->rx_buf_arr[index];
1813 
1814     lro_length = qlcnic_83xx_lro_pktln(sts_data[0]);
1815     l2_hdr_offset = qlcnic_83xx_l2_hdr_off(sts_data[1]);
1816     l4_hdr_offset = qlcnic_83xx_l4_hdr_off(sts_data[1]);
1817     push = qlcnic_83xx_is_psh_bit(sts_data[1]);
1818 
1819     skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
1820     if (!skb)
1821         return buffer;
1822 
1823     if (qlcnic_83xx_is_tstamp(sts_data[1]))
1824         data_offset = l4_hdr_offset + QLCNIC_TCP_TS_HDR_SIZE;
1825     else
1826         data_offset = l4_hdr_offset + QLCNIC_TCP_HDR_SIZE;
1827 
1828     skb_put(skb, lro_length + data_offset);
1829     skb_pull(skb, l2_hdr_offset);
1830 
1831     err = qlcnic_check_rx_tagging(adapter, skb, &vid);
1832 
1833     if (adapter->rx_mac_learn) {
1834         is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 1);
1835         qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid);
1836     }
1837 
1838     if (unlikely(err)) {
1839         adapter->stats.rxdropped++;
1840         dev_kfree_skb(skb);
1841         return buffer;
1842     }
1843 
1844     skb->protocol = eth_type_trans(skb, netdev);
1845     if (ntohs(skb->protocol) == ETH_P_IPV6) {
1846         ipv6h = (struct ipv6hdr *)skb->data;
1847         th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr));
1848 
1849         length = (th->doff << 2) + lro_length;
1850         ipv6h->payload_len = htons(length);
1851     } else {
1852         iph = (struct iphdr *)skb->data;
1853         th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
1854         length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
1855         csum_replace2(&iph->check, iph->tot_len, htons(length));
1856         iph->tot_len = htons(length);
1857     }
1858 
1859     th->psh = push;
1860     length = skb->len;
1861 
1862     if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) {
1863         gso_size = qlcnic_83xx_get_lro_sts_mss(sts_data[0]);
1864         skb_shinfo(skb)->gso_size = gso_size;
1865         if (skb->protocol == htons(ETH_P_IPV6))
1866             skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
1867         else
1868             skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
1869     }
1870 
1871     if (vid != 0xffff)
1872         __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1873 
1874     netif_receive_skb(skb);
1875 
1876     adapter->stats.lro_pkts++;
1877     adapter->stats.lrobytes += length;
1878     return buffer;
1879 }
1880 
1881 static int qlcnic_83xx_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring,
1882                     int max)
1883 {
1884     struct qlcnic_host_rds_ring *rds_ring;
1885     struct qlcnic_adapter *adapter = sds_ring->adapter;
1886     struct list_head *cur;
1887     struct status_desc *desc;
1888     struct qlcnic_rx_buffer *rxbuf = NULL;
1889     u8 ring;
1890     u64 sts_data[2];
1891     int count = 0, opcode;
1892     u32 consumer = sds_ring->consumer;
1893 
1894     while (count < max) {
1895         desc = &sds_ring->desc_head[consumer];
1896         sts_data[1] = le64_to_cpu(desc->status_desc_data[1]);
1897         opcode = qlcnic_83xx_opcode(sts_data[1]);
1898         if (!opcode)
1899             break;
1900         sts_data[0] = le64_to_cpu(desc->status_desc_data[0]);
1901         ring = QLCNIC_FETCH_RING_ID(sts_data[0]);
1902 
1903         switch (opcode) {
1904         case QLC_83XX_REG_DESC:
1905             rxbuf = qlcnic_83xx_process_rcv(adapter, sds_ring,
1906                             ring, sts_data);
1907             break;
1908         case QLC_83XX_LRO_DESC:
1909             rxbuf = qlcnic_83xx_process_lro(adapter, ring,
1910                             sts_data);
1911             break;
1912         default:
1913             dev_info(&adapter->pdev->dev,
1914                  "Unknown opcode: 0x%x\n", opcode);
1915             goto skip;
1916         }
1917 
1918         if (likely(rxbuf))
1919             list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
1920         else
1921             adapter->stats.null_rxbuf++;
1922 skip:
1923         desc = &sds_ring->desc_head[consumer];
1924         /* Reset the descriptor */
1925         desc->status_desc_data[1] = 0;
1926         consumer = get_next_index(consumer, sds_ring->num_desc);
1927         count++;
1928     }
1929     for (ring = 0; ring < adapter->max_rds_rings; ring++) {
1930         rds_ring = &adapter->recv_ctx->rds_rings[ring];
1931         if (!list_empty(&sds_ring->free_list[ring])) {
1932             list_for_each(cur, &sds_ring->free_list[ring]) {
1933                 rxbuf = list_entry(cur, struct qlcnic_rx_buffer,
1934                            list);
1935                 qlcnic_alloc_rx_skb(adapter, rds_ring, rxbuf);
1936             }
1937             spin_lock(&rds_ring->lock);
1938             list_splice_tail_init(&sds_ring->free_list[ring],
1939                           &rds_ring->free_list);
1940             spin_unlock(&rds_ring->lock);
1941         }
1942         qlcnic_post_rx_buffers_nodb(adapter, rds_ring, ring);
1943     }
1944     if (count) {
1945         sds_ring->consumer = consumer;
1946         writel(consumer, sds_ring->crb_sts_consumer);
1947     }
1948     return count;
1949 }
1950 
1951 static int qlcnic_83xx_msix_sriov_vf_poll(struct napi_struct *napi, int budget)
1952 {
1953     int tx_complete;
1954     int work_done;
1955     struct qlcnic_host_sds_ring *sds_ring;
1956     struct qlcnic_adapter *adapter;
1957     struct qlcnic_host_tx_ring *tx_ring;
1958 
1959     sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1960     adapter = sds_ring->adapter;
1961     /* tx ring count = 1 */
1962     tx_ring = adapter->tx_ring;
1963 
1964     tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1965     work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
1966 
1967     /* Check if we need a repoll */
1968     if (!tx_complete)
1969         work_done = budget;
1970 
1971     if (work_done < budget) {
1972         napi_complete_done(&sds_ring->napi, work_done);
1973         qlcnic_enable_sds_intr(adapter, sds_ring);
1974     }
1975 
1976     return work_done;
1977 }
1978 
1979 static int qlcnic_83xx_poll(struct napi_struct *napi, int budget)
1980 {
1981     int tx_complete;
1982     int work_done;
1983     struct qlcnic_host_sds_ring *sds_ring;
1984     struct qlcnic_adapter *adapter;
1985     struct qlcnic_host_tx_ring *tx_ring;
1986 
1987     sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
1988     adapter = sds_ring->adapter;
1989     /* tx ring count = 1 */
1990     tx_ring = adapter->tx_ring;
1991 
1992     tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
1993     work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
1994 
1995     /* Check if we need a repoll */
1996     if (!tx_complete)
1997         work_done = budget;
1998 
1999     if (work_done < budget) {
2000         napi_complete_done(&sds_ring->napi, work_done);
2001         qlcnic_enable_sds_intr(adapter, sds_ring);
2002     }
2003 
2004     return work_done;
2005 }
2006 
2007 static int qlcnic_83xx_msix_tx_poll(struct napi_struct *napi, int budget)
2008 {
2009     int work_done;
2010     struct qlcnic_host_tx_ring *tx_ring;
2011     struct qlcnic_adapter *adapter;
2012 
2013     tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi);
2014     adapter = tx_ring->adapter;
2015     work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
2016     if (work_done) {
2017         napi_complete(&tx_ring->napi);
2018         if (test_bit(__QLCNIC_DEV_UP , &adapter->state))
2019             qlcnic_enable_tx_intr(adapter, tx_ring);
2020     } else {
2021         /* need a repoll */
2022         work_done = budget;
2023     }
2024 
2025     return work_done;
2026 }
2027 
2028 static int qlcnic_83xx_rx_poll(struct napi_struct *napi, int budget)
2029 {
2030     int work_done;
2031     struct qlcnic_host_sds_ring *sds_ring;
2032     struct qlcnic_adapter *adapter;
2033 
2034     sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi);
2035     adapter = sds_ring->adapter;
2036     work_done = qlcnic_83xx_process_rcv_ring(sds_ring, budget);
2037     if (work_done < budget) {
2038         napi_complete_done(&sds_ring->napi, work_done);
2039         if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2040             qlcnic_enable_sds_intr(adapter, sds_ring);
2041     }
2042 
2043     return work_done;
2044 }
2045 
2046 void qlcnic_83xx_napi_enable(struct qlcnic_adapter *adapter)
2047 {
2048     int ring;
2049     struct qlcnic_host_sds_ring *sds_ring;
2050     struct qlcnic_host_tx_ring *tx_ring;
2051     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2052 
2053     if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2054         return;
2055 
2056     for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2057         sds_ring = &recv_ctx->sds_rings[ring];
2058         napi_enable(&sds_ring->napi);
2059         if (adapter->flags & QLCNIC_MSIX_ENABLED)
2060             qlcnic_enable_sds_intr(adapter, sds_ring);
2061     }
2062 
2063     if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2064         !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2065         for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2066             tx_ring = &adapter->tx_ring[ring];
2067             napi_enable(&tx_ring->napi);
2068             qlcnic_enable_tx_intr(adapter, tx_ring);
2069         }
2070     }
2071 }
2072 
2073 void qlcnic_83xx_napi_disable(struct qlcnic_adapter *adapter)
2074 {
2075     int ring;
2076     struct qlcnic_host_sds_ring *sds_ring;
2077     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2078     struct qlcnic_host_tx_ring *tx_ring;
2079 
2080     if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2081         return;
2082 
2083     for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2084         sds_ring = &recv_ctx->sds_rings[ring];
2085         if (adapter->flags & QLCNIC_MSIX_ENABLED)
2086             qlcnic_disable_sds_intr(adapter, sds_ring);
2087         napi_synchronize(&sds_ring->napi);
2088         napi_disable(&sds_ring->napi);
2089     }
2090 
2091     if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2092         !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2093         for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2094             tx_ring = &adapter->tx_ring[ring];
2095             qlcnic_disable_tx_intr(adapter, tx_ring);
2096             napi_synchronize(&tx_ring->napi);
2097             napi_disable(&tx_ring->napi);
2098         }
2099     }
2100 }
2101 
2102 int qlcnic_83xx_napi_add(struct qlcnic_adapter *adapter,
2103              struct net_device *netdev)
2104 {
2105     int ring;
2106     struct qlcnic_host_sds_ring *sds_ring;
2107     struct qlcnic_host_tx_ring *tx_ring;
2108     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2109 
2110     if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings))
2111         return -ENOMEM;
2112 
2113     for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2114         sds_ring = &recv_ctx->sds_rings[ring];
2115         if (adapter->flags & QLCNIC_MSIX_ENABLED) {
2116             if (!(adapter->flags & QLCNIC_TX_INTR_SHARED))
2117                 netif_napi_add(netdev, &sds_ring->napi,
2118                            qlcnic_83xx_rx_poll,
2119                            NAPI_POLL_WEIGHT);
2120             else
2121                 netif_napi_add(netdev, &sds_ring->napi,
2122                            qlcnic_83xx_msix_sriov_vf_poll,
2123                            NAPI_POLL_WEIGHT);
2124 
2125         } else {
2126             netif_napi_add(netdev, &sds_ring->napi,
2127                        qlcnic_83xx_poll,
2128                        NAPI_POLL_WEIGHT);
2129         }
2130     }
2131 
2132     if (qlcnic_alloc_tx_rings(adapter, netdev)) {
2133         qlcnic_free_sds_rings(recv_ctx);
2134         return -ENOMEM;
2135     }
2136 
2137     if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2138         !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2139         for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2140             tx_ring = &adapter->tx_ring[ring];
2141             netif_napi_add_tx(netdev, &tx_ring->napi,
2142                       qlcnic_83xx_msix_tx_poll);
2143         }
2144     }
2145 
2146     return 0;
2147 }
2148 
2149 void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter)
2150 {
2151     int ring;
2152     struct qlcnic_host_sds_ring *sds_ring;
2153     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2154     struct qlcnic_host_tx_ring *tx_ring;
2155 
2156     for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
2157         sds_ring = &recv_ctx->sds_rings[ring];
2158         netif_napi_del(&sds_ring->napi);
2159     }
2160 
2161     qlcnic_free_sds_rings(adapter->recv_ctx);
2162 
2163     if ((adapter->flags & QLCNIC_MSIX_ENABLED) &&
2164         !(adapter->flags & QLCNIC_TX_INTR_SHARED)) {
2165         for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
2166             tx_ring = &adapter->tx_ring[ring];
2167             netif_napi_del(&tx_ring->napi);
2168         }
2169     }
2170 
2171     qlcnic_free_tx_rings(adapter);
2172 }
2173 
2174 static void qlcnic_83xx_process_rcv_diag(struct qlcnic_adapter *adapter,
2175                      int ring, u64 sts_data[])
2176 {
2177     struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
2178     struct sk_buff *skb;
2179     struct qlcnic_host_rds_ring *rds_ring;
2180     int index, length;
2181 
2182     if (unlikely(ring >= adapter->max_rds_rings))
2183         return;
2184 
2185     rds_ring = &recv_ctx->rds_rings[ring];
2186     index = qlcnic_83xx_hndl(sts_data[0]);
2187     if (unlikely(index >= rds_ring->num_desc))
2188         return;
2189 
2190     length = qlcnic_83xx_pktln(sts_data[0]);
2191 
2192     skb = qlcnic_process_rxbuf(adapter, rds_ring, index, STATUS_CKSUM_OK);
2193     if (!skb)
2194         return;
2195 
2196     if (length > rds_ring->skb_size)
2197         skb_put(skb, rds_ring->skb_size);
2198     else
2199         skb_put(skb, length);
2200 
2201     if (!qlcnic_check_loopback_buff(skb->data, adapter->mac_addr))
2202         adapter->ahw->diag_cnt++;
2203     else
2204         dump_skb(skb, adapter);
2205 
2206     dev_kfree_skb_any(skb);
2207     return;
2208 }
2209 
2210 void qlcnic_83xx_process_rcv_ring_diag(struct qlcnic_host_sds_ring *sds_ring)
2211 {
2212     struct qlcnic_adapter *adapter = sds_ring->adapter;
2213     struct status_desc *desc;
2214     u64 sts_data[2];
2215     int ring, opcode;
2216     u32 consumer = sds_ring->consumer;
2217 
2218     desc = &sds_ring->desc_head[consumer];
2219     sts_data[0] = le64_to_cpu(desc->status_desc_data[0]);
2220     sts_data[1] = le64_to_cpu(desc->status_desc_data[1]);
2221     opcode = qlcnic_83xx_opcode(sts_data[1]);
2222     if (!opcode)
2223         return;
2224 
2225     ring = QLCNIC_FETCH_RING_ID(sts_data[0]);
2226     qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data);
2227     desc = &sds_ring->desc_head[consumer];
2228     desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
2229     consumer = get_next_index(consumer, sds_ring->num_desc);
2230     sds_ring->consumer = consumer;
2231     writel(consumer, sds_ring->crb_sts_consumer);
2232 }
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