| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Sony Chacko | 6743 | 57.69% | 10 | 12.20% |
| Amit Kumar Salecha | 1937 | 16.57% | 8 | 9.76% |
| Shahed Shaikh | 1443 | 12.35% | 12 | 14.63% |
| Sucheta Chakraborty | 791 | 6.77% | 5 | 6.10% |
| Himanshu Madhani | 313 | 2.68% | 5 | 6.10% |
| Rajesh K Borundia | 139 | 1.19% | 8 | 9.76% |
| Christophe Jaillet | 53 | 0.45% | 1 | 1.22% |
| Joe Perches | 53 | 0.45% | 1 | 1.22% |
| Manish Chopra | 51 | 0.44% | 4 | 4.88% |
| Li RongQing | 27 | 0.23% | 1 | 1.22% |
| Michael S. Tsirkin | 22 | 0.19% | 1 | 1.22% |
| Patrick McHardy | 20 | 0.17% | 1 | 1.22% |
| Eric Dumazet | 17 | 0.15% | 3 | 3.66% |
| Anirban Chakraborty | 16 | 0.14% | 5 | 6.10% |
| Michał Mirosław | 14 | 0.12% | 1 | 1.22% |
| Stephen Hemminger | 7 | 0.06% | 1 | 1.22% |
| Wang Qing | 6 | 0.05% | 1 | 1.22% |
| Ding Tianhong | 6 | 0.05% | 2 | 2.44% |
| Vladimir Oltean | 6 | 0.05% | 1 | 1.22% |
| schacko | 5 | 0.04% | 1 | 1.22% |
| Jiri Pirko | 4 | 0.03% | 1 | 1.22% |
| Jitendra Kalsaria | 4 | 0.03% | 2 | 2.44% |
| Gustavo A. R. Silva | 3 | 0.03% | 1 | 1.22% |
| Thomas Gleixner | 2 | 0.02% | 1 | 1.22% |
| Jakub Kiciński | 2 | 0.02% | 1 | 1.22% |
| Masanari Iida | 1 | 0.01% | 1 | 1.22% |
| Sritej Velaga | 1 | 0.01% | 1 | 1.22% |
| Matthew Wilcox | 1 | 0.01% | 1 | 1.22% |
| Tom Herbert | 1 | 0.01% | 1 | 1.22% |
| Total | 11688 | 82 |
// SPDX-License-Identifier: GPL-2.0-only /* * QLogic qlcnic NIC Driver * Copyright (c) 2009-2013 QLogic Corporation */ #include <linux/netdevice.h> #include <linux/if_vlan.h> #include <net/ip.h> #include <linux/ipv6.h> #include <net/checksum.h> #include <linux/printk.h> #include <linux/jiffies.h> #include "qlcnic.h" #define QLCNIC_TX_ETHER_PKT 0x01 #define QLCNIC_TX_TCP_PKT 0x02 #define QLCNIC_TX_UDP_PKT 0x03 #define QLCNIC_TX_IP_PKT 0x04 #define QLCNIC_TX_TCP_LSO 0x05 #define QLCNIC_TX_TCP_LSO6 0x06 #define QLCNIC_TX_ENCAP_PKT 0x07 #define QLCNIC_TX_ENCAP_LSO 0x08 #define QLCNIC_TX_TCPV6_PKT 0x0b #define QLCNIC_TX_UDPV6_PKT 0x0c #define QLCNIC_FLAGS_VLAN_TAGGED 0x10 #define QLCNIC_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_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) static int qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max); static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *, struct qlcnic_host_rds_ring *, u16, u16); static inline u8 qlcnic_mac_hash(u64 mac, u16 vlan) { return (u8)((mac & 0xff) ^ ((mac >> 40) & 0xff) ^ (vlan & 0xff)); } static inline u32 qlcnic_get_ref_handle(struct qlcnic_adapter *adapter, u16 handle, u8 ring_id) { if (qlcnic_83xx_check(adapter)) 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; } static void qlcnic_delete_rx_list_mac(struct qlcnic_adapter *adapter, struct qlcnic_filter *fil, void *addr, u16 vlan_id) { int ret; u8 op; op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD; ret = qlcnic_sre_macaddr_change(adapter, addr, vlan_id, op); if (ret) return; op = vlan_id ? QLCNIC_MAC_VLAN_DEL : QLCNIC_MAC_DEL; ret = qlcnic_sre_macaddr_change(adapter, addr, vlan_id, op); if (!ret) { hlist_del(&fil->fnode); adapter->rx_fhash.fnum--; } } static struct qlcnic_filter *qlcnic_find_mac_filter(struct hlist_head *head, void *addr, u16 vlan_id) { struct qlcnic_filter *tmp_fil = NULL; struct hlist_node *n; hlist_for_each_entry_safe(tmp_fil, n, head, fnode) { if (ether_addr_equal(tmp_fil->faddr, addr) && tmp_fil->vlan_id == vlan_id) return tmp_fil; } return NULL; } static void qlcnic_add_lb_filter(struct qlcnic_adapter *adapter, struct sk_buff *skb, int loopback_pkt, u16 vlan_id) { struct ethhdr *phdr = (struct ethhdr *)(skb->data); struct qlcnic_filter *fil, *tmp_fil; struct hlist_head *head; unsigned long time; u64 src_addr = 0; u8 hindex, op; int ret; if (!qlcnic_sriov_pf_check(adapter) || (vlan_id == 0xffff)) vlan_id = 0; memcpy(&src_addr, phdr->h_source, ETH_ALEN); hindex = qlcnic_mac_hash(src_addr, vlan_id) & (adapter->fhash.fbucket_size - 1); if (loopback_pkt) { if (adapter->rx_fhash.fnum >= adapter->rx_fhash.fmax) return; head = &(adapter->rx_fhash.fhead[hindex]); tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id); if (tmp_fil) { time = tmp_fil->ftime; if (time_after(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 { head = &adapter->fhash.fhead[hindex]; spin_lock(&adapter->mac_learn_lock); tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id); if (tmp_fil) { 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->fhash.fnum--; } spin_unlock(&adapter->mac_learn_lock); return; } spin_unlock(&adapter->mac_learn_lock); head = &adapter->rx_fhash.fhead[hindex]; spin_lock(&adapter->rx_mac_learn_lock); tmp_fil = qlcnic_find_mac_filter(head, &src_addr, vlan_id); if (tmp_fil) qlcnic_delete_rx_list_mac(adapter, tmp_fil, &src_addr, vlan_id); spin_unlock(&adapter->rx_mac_learn_lock); } } void qlcnic_82xx_change_filter(struct qlcnic_adapter *adapter, u64 *uaddr, u16 vlan_id, struct qlcnic_host_tx_ring *tx_ring) { struct cmd_desc_type0 *hwdesc; struct qlcnic_nic_req *req; struct qlcnic_mac_req *mac_req; struct qlcnic_vlan_req *vlan_req; u32 producer; u64 word; producer = tx_ring->producer; hwdesc = &tx_ring->desc_head[tx_ring->producer]; req = (struct qlcnic_nic_req *)hwdesc; memset(req, 0, sizeof(struct qlcnic_nic_req)); req->qhdr = cpu_to_le64(QLCNIC_REQUEST << 23); word = QLCNIC_MAC_EVENT | ((u64)(adapter->portnum) << 16); req->req_hdr = cpu_to_le64(word); mac_req = (struct qlcnic_mac_req *)&(req->words[0]); mac_req->op = vlan_id ? QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_ADD; memcpy(mac_req->mac_addr, uaddr, ETH_ALEN); vlan_req = (struct qlcnic_vlan_req *)&req->words[1]; vlan_req->vlan_id = cpu_to_le16(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_host_tx_ring *tx_ring) { struct vlan_ethhdr *vh = (struct vlan_ethhdr *)(skb->data); struct ethhdr *phdr = (struct ethhdr *)(skb->data); u16 protocol = ntohs(skb->protocol); struct qlcnic_filter *fil, *tmp_fil; struct hlist_head *head; struct hlist_node *n; u64 src_addr = 0; u16 vlan_id = 0; u8 hindex, hval; if (ether_addr_equal(phdr->h_source, adapter->mac_addr)) return; if (adapter->flags & QLCNIC_VLAN_FILTERING) { if (protocol == ETH_P_8021Q) { vh = skb_vlan_eth_hdr(skb); vlan_id = ntohs(vh->h_vlan_TCI); } else if (skb_vlan_tag_present(skb)) { vlan_id = skb_vlan_tag_get(skb); } } memcpy(&src_addr, phdr->h_source, ETH_ALEN); hval = qlcnic_mac_hash(src_addr, vlan_id); hindex = hval & (adapter->fhash.fbucket_size - 1); head = &(adapter->fhash.fhead[hindex]); hlist_for_each_entry_safe(tmp_fil, n, head, fnode) { if (ether_addr_equal(tmp_fil->faddr, (u8 *)&src_addr) && tmp_fil->vlan_id == vlan_id) { if (time_is_before_jiffies(QLCNIC_READD_AGE * HZ + tmp_fil->ftime)) qlcnic_change_filter(adapter, &src_addr, vlan_id, tx_ring); tmp_fil->ftime = jiffies; return; } } if (unlikely(adapter->fhash.fnum >= adapter->fhash.fmax)) { adapter->stats.mac_filter_limit_overrun++; return; } fil = kzalloc(sizeof(struct qlcnic_filter), GFP_ATOMIC); if (!fil) return; qlcnic_change_filter(adapter, &src_addr, vlan_id, tx_ring); fil->ftime = jiffies; fil->vlan_id = vlan_id; memcpy(fil->faddr, &src_addr, ETH_ALEN); spin_lock(&adapter->mac_learn_lock); hlist_add_head(&(fil->fnode), head); adapter->fhash.fnum++; spin_unlock(&adapter->mac_learn_lock); } #define QLCNIC_ENCAP_VXLAN_PKT BIT_0 #define QLCNIC_ENCAP_OUTER_L3_IP6 BIT_1 #define QLCNIC_ENCAP_INNER_L3_IP6 BIT_2 #define QLCNIC_ENCAP_INNER_L4_UDP BIT_3 #define QLCNIC_ENCAP_DO_L3_CSUM BIT_4 #define QLCNIC_ENCAP_DO_L4_CSUM BIT_5 static int qlcnic_tx_encap_pkt(struct qlcnic_adapter *adapter, struct cmd_desc_type0 *first_desc, struct sk_buff *skb, struct qlcnic_host_tx_ring *tx_ring) { u8 opcode = 0, inner_hdr_len = 0, outer_hdr_len = 0, total_hdr_len = 0; int copied, copy_len, descr_size; u32 producer = tx_ring->producer; struct cmd_desc_type0 *hwdesc; u16 flags = 0, encap_descr = 0; opcode = QLCNIC_TX_ETHER_PKT; encap_descr = QLCNIC_ENCAP_VXLAN_PKT; if (skb_is_gso(skb)) { inner_hdr_len = skb_inner_transport_header(skb) + inner_tcp_hdrlen(skb) - skb_inner_mac_header(skb); /* VXLAN header size = 8 */ outer_hdr_len = skb_transport_offset(skb) + 8 + sizeof(struct udphdr); first_desc->outer_hdr_length = outer_hdr_len; total_hdr_len = inner_hdr_len + outer_hdr_len; encap_descr |= QLCNIC_ENCAP_DO_L3_CSUM | QLCNIC_ENCAP_DO_L4_CSUM; first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); first_desc->hdr_length = inner_hdr_len; /* Copy inner and outer headers in Tx descriptor(s) * If total_hdr_len > cmd_desc_type0, use multiple * descriptors */ copied = 0; descr_size = (int)sizeof(struct cmd_desc_type0); while (copied < total_hdr_len) { copy_len = min(descr_size, (total_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, copy_len); copied += copy_len; producer = get_next_index(producer, tx_ring->num_desc); } tx_ring->producer = producer; /* Make sure updated tx_ring->producer is visible * for qlcnic_tx_avail() */ smp_mb(); adapter->stats.encap_lso_frames++; opcode = QLCNIC_TX_ENCAP_LSO; } else if (skb->ip_summed == CHECKSUM_PARTIAL) { if (inner_ip_hdr(skb)->version == 6) { if (inner_ipv6_hdr(skb)->nexthdr == IPPROTO_UDP) encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP; } else { if (inner_ip_hdr(skb)->protocol == IPPROTO_UDP) encap_descr |= QLCNIC_ENCAP_INNER_L4_UDP; } adapter->stats.encap_tx_csummed++; opcode = QLCNIC_TX_ENCAP_PKT; } /* Prepare first 16 bits of byte offset 16 of Tx descriptor */ if (ip_hdr(skb)->version == 6) encap_descr |= QLCNIC_ENCAP_OUTER_L3_IP6; /* outer IP header's size in 32bit words size*/ encap_descr |= (skb_network_header_len(skb) >> 2) << 6; /* outer IP header offset */ encap_descr |= skb_network_offset(skb) << 10; first_desc->encap_descr = cpu_to_le16(encap_descr); first_desc->tcp_hdr_offset = skb_inner_transport_offset(skb); first_desc->ip_hdr_offset = skb_inner_network_offset(skb); qlcnic_set_tx_flags_opcode(first_desc, flags, opcode); return 0; } static int qlcnic_tx_pkt(struct qlcnic_adapter *adapter, struct cmd_desc_type0 *first_desc, struct sk_buff *skb, struct qlcnic_host_tx_ring *tx_ring) { u8 l4proto, opcode = 0, hdr_len = 0, tag_vlan = 0; u16 flags = 0, vlan_tci = 0; int copied, offset, copy_len, size; struct cmd_desc_type0 *hwdesc; struct vlan_ethhdr *vh; u16 protocol = ntohs(skb->protocol); u32 producer = tx_ring->producer; if (protocol == ETH_P_8021Q) { vh = skb_vlan_eth_hdr(skb); flags = QLCNIC_FLAGS_VLAN_TAGGED; vlan_tci = ntohs(vh->h_vlan_TCI); protocol = ntohs(vh->h_vlan_encapsulated_proto); tag_vlan = 1; } else if (skb_vlan_tag_present(skb)) { flags = QLCNIC_FLAGS_VLAN_OOB; vlan_tci = skb_vlan_tag_get(skb); tag_vlan = 1; } if (unlikely(adapter->tx_pvid)) { if (tag_vlan && !(adapter->flags & QLCNIC_TAGGING_ENABLED)) return -EIO; if (tag_vlan && (adapter->flags & QLCNIC_TAGGING_ENABLED)) goto set_flags; flags = QLCNIC_FLAGS_VLAN_OOB; vlan_tci = adapter->tx_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 = QLCNIC_TX_ETHER_PKT; if (skb_is_gso(skb)) { hdr_len = skb_tcp_all_headers(skb); first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); first_desc->hdr_length = hdr_len; opcode = (protocol == ETH_P_IPV6) ? QLCNIC_TX_TCP_LSO6 : QLCNIC_TX_TCP_LSO; /* For LSO, we need to copy the MAC/IP/TCP headers into * the descriptor ring */ copied = 0; offset = 2; if (flags & QLCNIC_FLAGS_VLAN_OOB) { first_desc->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 |= QLCNIC_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 = QLCNIC_TX_TCP_PKT; else if (l4proto == IPPROTO_UDP) opcode = QLCNIC_TX_UDP_PKT; } else if (protocol == ETH_P_IPV6) { l4proto = ipv6_hdr(skb)->nexthdr; if (l4proto == IPPROTO_TCP) opcode = QLCNIC_TX_TCPV6_PKT; else if (l4proto == IPPROTO_UDP) opcode = QLCNIC_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; skb_frag_t *frag; int i, nr_frags; dma_addr_t map; nr_frags = skb_shinfo(skb)->nr_frags; nf = &pbuf->frag_array[0]; map = dma_map_single(&pdev->dev, skb->data, skb_headlen(skb), DMA_TO_DEVICE); if (dma_mapping_error(&pdev->dev, 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]; dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE); } nf = &pbuf->frag_array[0]; dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE); 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]; dma_unmap_page(&pdev->dev, nf->dma, nf->length, DMA_TO_DEVICE); } nf = &pbuf->frag_array[0]; dma_unmap_single(&pdev->dev, nf->dma, skb_headlen(skb), DMA_TO_DEVICE); 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; 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; u16 protocol; bool l4_is_udp = false; if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) { netif_tx_stop_all_queues(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; } tx_ring = &adapter->tx_ring[skb_get_queue_mapping(skb)]; num_txd = tx_ring->num_desc; 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_tx_stop_queue(tx_ring->txq); if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { netif_tx_start_queue(tx_ring->txq); } else { tx_ring->tx_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(); protocol = ntohs(skb->protocol); if (protocol == ETH_P_IP) l4_is_udp = ip_hdr(skb)->protocol == IPPROTO_UDP; else if (protocol == ETH_P_IPV6) l4_is_udp = ipv6_hdr(skb)->nexthdr == IPPROTO_UDP; /* Check if it is a VXLAN packet */ if (!skb->encapsulation || !l4_is_udp || !qlcnic_encap_tx_offload(adapter)) { if (unlikely(qlcnic_tx_pkt(adapter, first_desc, skb, tx_ring))) goto unwind_buff; } else { if (unlikely(qlcnic_tx_encap_pkt(adapter, first_desc, skb, tx_ring))) goto unwind_buff; } if (adapter->drv_mac_learn) qlcnic_send_filter(adapter, first_desc, skb, tx_ring); tx_ring->tx_stats.tx_bytes += skb->len; tx_ring->tx_stats.xmit_called++; /* Ensure writes are complete before HW fetches Tx descriptors */ wmb(); 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; netif_carrier_off(netdev); } else if (!adapter->ahw->linkup && linkup) { adapter->ahw->linkup = 1; /* Do not advertise Link up to the stack if device * is in loopback mode */ if (qlcnic_83xx_check(adapter) && adapter->ahw->lb_mode) { netdev_info(netdev, "NIC Link is up for loopback test\n"); return; } netdev_info(netdev, "NIC Link is up\n"); netif_carrier_on(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 = dma_map_single(&pdev->dev, skb->data, rds_ring->dma_size, DMA_FROM_DEVICE); if (dma_mapping_error(&pdev->dev, 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(&tx_ring->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]; dma_unmap_single(&pdev->dev, frag->dma, frag->length, DMA_TO_DEVICE); frag->dma = 0ULL; for (i = 1; i < buffer->frag_count; i++) { frag++; dma_unmap_page(&pdev->dev, frag->dma, frag->length, DMA_TO_DEVICE); frag->dma = 0ULL; } tx_ring->tx_stats.xmit_finished++; dev_kfree_skb_any(buffer->skb); buffer->skb = NULL; } sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc); if (++count >= budget) break; } tx_ring->sw_consumer = sw_consumer; if (count && netif_running(netdev)) { smp_mb(); if (netif_tx_queue_stopped(tx_ring->txq) && netif_carrier_ok(netdev)) { if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) { netif_tx_wake_queue(tx_ring->txq); tx_ring->tx_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(&tx_ring->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; struct qlcnic_host_tx_ring *tx_ring; sds_ring = container_of(napi, struct qlcnic_host_sds_ring, napi); adapter = sds_ring->adapter; tx_ring = sds_ring->tx_ring; tx_complete = qlcnic_process_cmd_ring(adapter, tx_ring, budget); work_done = qlcnic_process_rcv_ring(sds_ring, budget); /* Check if we need a repoll */ if (!tx_complete) work_done = budget; if (work_done < budget) { napi_complete_done(&sds_ring->napi, work_done); if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) { qlcnic_enable_sds_intr(adapter, sds_ring); qlcnic_enable_tx_intr(adapter, tx_ring); } } return work_done; } static int qlcnic_tx_poll(struct napi_struct *napi, int budget) { struct qlcnic_host_tx_ring *tx_ring; struct qlcnic_adapter *adapter; int work_done; 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_enable_tx_intr(adapter, tx_ring); } else { /* As qlcnic_process_cmd_ring() returned 0, we need a repoll*/ work_done = budget; } 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_done(&sds_ring->napi, work_done); if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) qlcnic_enable_sds_intr(adapter, 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 = -EINPROGRESS; break; case 2: dev_info(dev, "loopback cable is not connected\n"); adapter->ahw->diag_cnt = -ENODEV; break; default: dev_info(dev, "loopback configure request failed, err %x\n", ret); adapter->ahw->diag_cnt = -EIO; break; } break; case QLCNIC_C2H_OPCODE_GET_DCB_AEN: qlcnic_dcb_aen_handler(adapter->dcb, (void *)&msg); break; default: break; } } static 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; } dma_unmap_single(&adapter->pdev->dev, buffer->dma, ring->dma_size, DMA_FROM_DEVICE); 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->rx_pvid) return 0; if (*vlan_tag == adapter->rx_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->rx_mac_learn) { t_vid = 0; is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0); qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, 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, htons(ETH_P_8021Q), 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->rx_mac_learn) { t_vid = 0; is_lb_pkt = qlcnic_82xx_is_lb_pkt(sts_data0); qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, 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; csum_replace2(&iph->check, iph->tot_len, htons(length)); iph->tot_len = htons(length); } 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, htons(ETH_P_8021Q), vid); netif_receive_skb(skb); adapter->stats.lro_pkts++; adapter->stats.lrobytes += length; return buffer; } static 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); goto skip; 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) { if (adapter->ahw->msg_enable & NETIF_MSG_DRV) { char prefix[30]; scnprintf(prefix, sizeof(prefix), "%s: %s: ", dev_name(&adapter->pdev->dev), __func__); print_hex_dump_debug(prefix, DUMP_PREFIX_NONE, 16, 1, skb->data, skb->len, true); } } 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; struct qlcnic_host_sds_ring *sds_ring; struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx; struct qlcnic_host_tx_ring *tx_ring; if (qlcnic_alloc_sds_rings(recv_ctx, adapter->drv_sds_rings)) return -ENOMEM; for (ring = 0; ring < adapter->drv_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll); } else { if (ring == (adapter->drv_sds_rings - 1)) netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll); else netif_napi_add(netdev, &sds_ring->napi, qlcnic_rx_poll); } } if (qlcnic_alloc_tx_rings(adapter, netdev)) { qlcnic_free_sds_rings(recv_ctx); return -ENOMEM; } if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { for (ring = 0; ring < adapter->drv_tx_rings; ring++) { tx_ring = &adapter->tx_ring[ring]; netif_napi_add_tx(netdev, &tx_ring->napi, qlcnic_tx_poll); } } 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; struct qlcnic_host_tx_ring *tx_ring; for (ring = 0; ring < adapter->drv_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; netif_napi_del(&sds_ring->napi); } qlcnic_free_sds_rings(adapter->recv_ctx); if (qlcnic_check_multi_tx(adapter) && !adapter->ahw->diag_test) { for (ring = 0; ring < adapter->drv_tx_rings; ring++) { tx_ring = &adapter->tx_ring[ring]; netif_napi_del(&tx_ring->napi); } } 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_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->drv_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; napi_enable(&sds_ring->napi); qlcnic_enable_sds_intr(adapter, sds_ring); } if (qlcnic_check_multi_tx(adapter) && (adapter->flags & QLCNIC_MSIX_ENABLED) && !adapter->ahw->diag_test) { for (ring = 0; ring < adapter->drv_tx_rings; ring++) { tx_ring = &adapter->tx_ring[ring]; napi_enable(&tx_ring->napi); qlcnic_enable_tx_intr(adapter, tx_ring); } } } void qlcnic_82xx_napi_disable(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->drv_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; qlcnic_disable_sds_intr(adapter, sds_ring); napi_synchronize(&sds_ring->napi); napi_disable(&sds_ring->napi); } if ((adapter->flags & QLCNIC_MSIX_ENABLED) && !adapter->ahw->diag_test && qlcnic_check_multi_tx(adapter)) { for (ring = 0; ring < adapter->drv_tx_rings; ring++) { tx_ring = &adapter->tx_ring[ring]; qlcnic_disable_tx_intr(adapter, tx_ring); napi_synchronize(&tx_ring->napi); napi_disable(&tx_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; } #define QLCNIC_ENCAP_LENGTH_MASK 0x7f static inline u8 qlcnic_encap_length(u64 sts_data) { return sts_data & QLCNIC_ENCAP_LENGTH_MASK; } 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; int err; 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 (length > rds_ring->skb_size) skb_put(skb, rds_ring->skb_size); else skb_put(skb, length); err = qlcnic_check_rx_tagging(adapter, skb, &vid); if (adapter->rx_mac_learn) { is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 0); qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid); } if (unlikely(err)) { adapter->stats.rxdropped++; dev_kfree_skb(skb); return buffer; } skb->protocol = eth_type_trans(skb, netdev); if (qlcnic_encap_length(sts_data[1]) && skb->ip_summed == CHECKSUM_UNNECESSARY) { skb->csum_level = 1; adapter->stats.encap_rx_csummed++; } if (vid != 0xffff) __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), 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; int err; 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 (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); err = qlcnic_check_rx_tagging(adapter, skb, &vid); if (adapter->rx_mac_learn) { is_lb_pkt = qlcnic_83xx_is_lb_pkt(sts_data[1], 1); qlcnic_add_lb_filter(adapter, skb, is_lb_pkt, vid); } if (unlikely(err)) { 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; csum_replace2(&iph->check, iph->tot_len, htons(length)); iph->tot_len = htons(length); } 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, htons(ETH_P_8021Q), 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, "Unknown 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_msix_sriov_vf_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); /* Check if we need a repoll */ if (!tx_complete) work_done = budget; if (work_done < budget) { napi_complete_done(&sds_ring->napi, work_done); qlcnic_enable_sds_intr(adapter, sds_ring); } return work_done; } 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); /* Check if we need a repoll */ if (!tx_complete) work_done = budget; if (work_done < budget) { napi_complete_done(&sds_ring->napi, work_done); qlcnic_enable_sds_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; 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_enable_tx_intr(adapter, tx_ring); } else { /* need a repoll */ work_done = budget; } 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_done(&sds_ring->napi, work_done); if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) qlcnic_enable_sds_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->drv_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; napi_enable(&sds_ring->napi); if (adapter->flags & QLCNIC_MSIX_ENABLED) qlcnic_enable_sds_intr(adapter, sds_ring); } if ((adapter->flags & QLCNIC_MSIX_ENABLED) && !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { for (ring = 0; ring < adapter->drv_tx_rings; ring++) { tx_ring = &adapter->tx_ring[ring]; napi_enable(&tx_ring->napi); qlcnic_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->drv_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; if (adapter->flags & QLCNIC_MSIX_ENABLED) qlcnic_disable_sds_intr(adapter, sds_ring); napi_synchronize(&sds_ring->napi); napi_disable(&sds_ring->napi); } if ((adapter->flags & QLCNIC_MSIX_ENABLED) && !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { for (ring = 0; ring < adapter->drv_tx_rings; ring++) { tx_ring = &adapter->tx_ring[ring]; qlcnic_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; 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->drv_sds_rings)) return -ENOMEM; for (ring = 0; ring < adapter->drv_sds_rings; ring++) { sds_ring = &recv_ctx->sds_rings[ring]; if (adapter->flags & QLCNIC_MSIX_ENABLED) { if (!(adapter->flags & QLCNIC_TX_INTR_SHARED)) netif_napi_add(netdev, &sds_ring->napi, qlcnic_83xx_rx_poll); else netif_napi_add(netdev, &sds_ring->napi, qlcnic_83xx_msix_sriov_vf_poll); } else { netif_napi_add(netdev, &sds_ring->napi, qlcnic_83xx_poll); } } if (qlcnic_alloc_tx_rings(adapter, netdev)) { qlcnic_free_sds_rings(recv_ctx); return -ENOMEM; } if ((adapter->flags & QLCNIC_MSIX_ENABLED) && !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { for (ring = 0; ring < adapter->drv_tx_rings; ring++) { tx_ring = &adapter->tx_ring[ring]; netif_napi_add_tx(netdev, &tx_ring->napi, qlcnic_83xx_msix_tx_poll); } } 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->drv_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) && !(adapter->flags & QLCNIC_TX_INTR_SHARED)) { for (ring = 0; ring < adapter->drv_tx_rings; ring++) { tx_ring = &adapter->tx_ring[ring]; netif_napi_del(&tx_ring->napi); } } qlcnic_free_tx_rings(adapter); } static 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(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); }
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