1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540154115421543154415451546154715481549155015511552155315541555155615571558155915601561156215631564156515661567156815691570157115721573157415751576157715781579158015811582158315841585158615871588158915901591159215931594159515961597159815991600160116021603160416051606160716081609161016111612161316141615161616171618161916201621162216231624162516261627162816291630163116321633163416351636163716381639164016411642164316441645164616471648164916501651165216531654165516561657165816591660166116621663166416651666166716681669167016711672167316741675167616771678167916801681168216831684168516861687168816891690169116921693169416951696169716981699170017011702170317041705170617071708170917101711171217131714171517161717171817191720172117221723172417251726172717281729173017311732173317341735173617371738173917401741174217431744174517461747174817491750175117521753175417551756175717581759176017611762176317641765176617671768176917701771177217731774177517761777177817791780178117821783178417851786178717881789179017911792179317941795179617971798179918001801180218031804180518061807180818091810181118121813181418151816181718181819182018211822182318241825182618271828182918301831183218331834183518361837183818391840184118421843184418451846184718481849185018511852185318541855185618571858185918601861186218631864186518661867186818691870187118721873187418751876187718781879188018811882188318841885188618871888188918901891189218931894189518961897189818991900190119021903190419051906190719081909191019111912191319141915191619171918191919201921192219231924192519261927192819291930193119321933193419351936193719381939194019411942194319441945194619471948194919501951195219531954195519561957195819591960196119621963196419651966196719681969197019711972197319741975197619771978197919801981198219831984198519861987198819891990199119921993199419951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023202420252026202720282029203020312032203320342035203620372038203920402041204220432044204520462047204820492050205120522053205420552056205720582059206020612062206320642065206620672068206920702071207220732074207520762077207820792080208120822083208420852086208720882089209020912092209320942095209620972098209921002101210221032104210521062107210821092110211121122113211421152116211721182119212021212122212321242125212621272128212921302131213221332134213521362137213821392140214121422143214421452146214721482149215021512152215321542155215621572158215921602161216221632164216521662167216821692170217121722173217421752176217721782179218021812182218321842185218621872188218921902191219221932194219521962197219821992200220122022203220422052206220722082209221022112212221322142215221622172218221922202221222222232224222522262227222822292230 |
- /*
- * QLogic qlcnic NIC Driver
- * Copyright (c) 2009-2013 QLogic Corporation
- *
- * See LICENSE.qlcnic for copyright and licensing details.
- */
- #include <linux/netdevice.h>
- #include <linux/if_vlan.h>
- #include <net/ip.h>
- #include <linux/ipv6.h>
- #include <net/checksum.h>
- #include <linux/printk.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_TX_POLL_BUDGET 128
- #define QLCNIC_TCP_HDR_SIZE 20
- #define QLCNIC_TCP_TS_OPTION_SIZE 12
- #define QLCNIC_FETCH_RING_ID(handle) ((handle) >> 63)
- #define QLCNIC_DESC_OWNER_FW cpu_to_le64(STATUS_OWNER_PHANTOM)
- #define QLCNIC_TCP_TS_HDR_SIZE (QLCNIC_TCP_HDR_SIZE + QLCNIC_TCP_TS_OPTION_SIZE)
- /* for status field in status_desc */
- #define STATUS_CKSUM_LOOP 0
- #define STATUS_CKSUM_OK 2
- #define qlcnic_83xx_pktln(sts) ((sts >> 32) & 0x3FFF)
- #define qlcnic_83xx_hndl(sts) ((sts >> 48) & 0x7FFF)
- #define qlcnic_83xx_csum_status(sts) ((sts >> 39) & 7)
- #define qlcnic_83xx_opcode(sts) ((sts >> 42) & 0xF)
- #define qlcnic_83xx_vlan_tag(sts) (((sts) >> 48) & 0xFFFF)
- #define qlcnic_83xx_lro_pktln(sts) (((sts) >> 32) & 0x3FFF)
- #define qlcnic_83xx_l2_hdr_off(sts) (((sts) >> 16) & 0xFF)
- #define qlcnic_83xx_l4_hdr_off(sts) (((sts) >> 24) & 0xFF)
- #define qlcnic_83xx_pkt_cnt(sts) (((sts) >> 16) & 0x7)
- #define qlcnic_83xx_is_tstamp(sts) (((sts) >> 40) & 1)
- #define qlcnic_83xx_is_psh_bit(sts) (((sts) >> 41) & 1)
- #define qlcnic_83xx_is_ip_align(sts) (((sts) >> 46) & 1)
- #define qlcnic_83xx_has_vlan_tag(sts) (((sts) >> 47) & 1)
- 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 = (struct vlan_ethhdr *)skb->data;
- 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 (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_header(skb) -
- skb->data;
- 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;
- 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 = (struct vlan_ethhdr *)skb->data;
- flags = QLCNIC_FLAGS_VLAN_TAGGED;
- vlan_tci = ntohs(vh->h_vlan_TCI);
- protocol = ntohs(vh->h_vlan_encapsulated_proto);
- } else if (skb_vlan_tag_present(skb)) {
- flags = QLCNIC_FLAGS_VLAN_OOB;
- vlan_tci = skb_vlan_tag_get(skb);
- }
- if (unlikely(adapter->tx_pvid)) {
- if (vlan_tci && !(adapter->flags & QLCNIC_TAGGING_ENABLED))
- return -EIO;
- if (vlan_tci && (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_transport_offset(skb) + tcp_hdrlen(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;
- struct skb_frag_struct *frag;
- int i, nr_frags;
- dma_addr_t map;
- nr_frags = skb_shinfo(skb)->nr_frags;
- nf = &pbuf->frag_array[0];
- map = pci_map_single(pdev, skb->data, skb_headlen(skb),
- PCI_DMA_TODEVICE);
- if (pci_dma_mapping_error(pdev, map))
- goto out_err;
- nf->dma = map;
- nf->length = skb_headlen(skb);
- for (i = 0; i < nr_frags; i++) {
- frag = &skb_shinfo(skb)->frags[i];
- nf = &pbuf->frag_array[i+1];
- map = skb_frag_dma_map(&pdev->dev, frag, 0, skb_frag_size(frag),
- DMA_TO_DEVICE);
- if (dma_mapping_error(&pdev->dev, map))
- goto unwind;
- nf->dma = map;
- nf->length = skb_frag_size(frag);
- }
- return 0;
- unwind:
- while (--i >= 0) {
- nf = &pbuf->frag_array[i+1];
- pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
- }
- nf = &pbuf->frag_array[0];
- pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
- out_err:
- return -ENOMEM;
- }
- static void qlcnic_unmap_buffers(struct pci_dev *pdev, struct sk_buff *skb,
- struct qlcnic_cmd_buffer *pbuf)
- {
- struct qlcnic_skb_frag *nf = &pbuf->frag_array[0];
- int i, nr_frags = skb_shinfo(skb)->nr_frags;
- for (i = 0; i < nr_frags; i++) {
- nf = &pbuf->frag_array[i+1];
- pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
- }
- nf = &pbuf->frag_array[0];
- pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
- pbuf->skb = NULL;
- }
- static inline void qlcnic_clear_cmddesc(u64 *desc)
- {
- desc[0] = 0ULL;
- desc[2] = 0ULL;
- desc[7] = 0ULL;
- }
- netdev_tx_t qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
- {
- struct qlcnic_adapter *adapter = netdev_priv(netdev);
- struct qlcnic_host_tx_ring *tx_ring;
- 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++;
- 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 = pci_map_single(pdev, skb->data,
- rds_ring->dma_size, PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(pdev, dma)) {
- adapter->stats.rx_dma_map_error++;
- dev_kfree_skb_any(skb);
- return -ENOMEM;
- }
- buffer->skb = skb;
- buffer->dma = dma;
- return 0;
- }
- static void qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter,
- struct qlcnic_host_rds_ring *rds_ring,
- u8 ring_id)
- {
- struct rcv_desc *pdesc;
- struct qlcnic_rx_buffer *buffer;
- int count = 0;
- uint32_t producer, handle;
- struct list_head *head;
- if (!spin_trylock(&rds_ring->lock))
- return;
- producer = rds_ring->producer;
- head = &rds_ring->free_list;
- while (!list_empty(head)) {
- buffer = list_entry(head->next, struct qlcnic_rx_buffer, list);
- if (!buffer->skb) {
- if (qlcnic_alloc_rx_skb(adapter, rds_ring, buffer))
- break;
- }
- count++;
- list_del(&buffer->list);
- /* make a rcv descriptor */
- pdesc = &rds_ring->desc_head[producer];
- handle = qlcnic_get_ref_handle(adapter,
- buffer->ref_handle, ring_id);
- pdesc->reference_handle = cpu_to_le16(handle);
- pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
- pdesc->addr_buffer = cpu_to_le64(buffer->dma);
- producer = get_next_index(producer, rds_ring->num_desc);
- }
- if (count) {
- rds_ring->producer = producer;
- writel((producer - 1) & (rds_ring->num_desc - 1),
- rds_ring->crb_rcv_producer);
- }
- spin_unlock(&rds_ring->lock);
- }
- static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter,
- struct qlcnic_host_tx_ring *tx_ring,
- int budget)
- {
- u32 sw_consumer, hw_consumer;
- int i, done, count = 0;
- struct qlcnic_cmd_buffer *buffer;
- struct pci_dev *pdev = adapter->pdev;
- struct net_device *netdev = adapter->netdev;
- struct qlcnic_skb_frag *frag;
- if (!spin_trylock(&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];
- pci_unmap_single(pdev, frag->dma, frag->length,
- PCI_DMA_TODEVICE);
- frag->dma = 0ULL;
- for (i = 1; i < buffer->frag_count; i++) {
- frag++;
- pci_unmap_page(pdev, frag->dma, frag->length,
- PCI_DMA_TODEVICE);
- frag->dma = 0ULL;
- }
- 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(&sds_ring->napi);
- 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(&sds_ring->napi);
- 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;
- }
- pci_unmap_single(adapter->pdev, buffer->dma, ring->dma_size,
- PCI_DMA_FROMDEVICE);
- skb = buffer->skb;
- if (likely((adapter->netdev->features & NETIF_F_RXCSUM) &&
- (cksum == STATUS_CKSUM_OK || cksum == STATUS_CKSUM_LOOP))) {
- adapter->stats.csummed++;
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- } else {
- skb_checksum_none_assert(skb);
- }
- buffer->skb = NULL;
- return skb;
- }
- static inline int qlcnic_check_rx_tagging(struct qlcnic_adapter *adapter,
- struct sk_buff *skb, u16 *vlan_tag)
- {
- struct ethhdr *eth_hdr;
- if (!__vlan_get_tag(skb, vlan_tag)) {
- eth_hdr = (struct ethhdr *)skb->data;
- memmove(skb->data + VLAN_HLEN, eth_hdr, ETH_ALEN * 2);
- skb_pull(skb, VLAN_HLEN);
- }
- if (!adapter->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);
- 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,
- NAPI_POLL_WEIGHT);
- } else {
- if (ring == (adapter->drv_sds_rings - 1))
- netif_napi_add(netdev, &sds_ring->napi,
- qlcnic_poll,
- NAPI_POLL_WEIGHT);
- else
- netif_napi_add(netdev, &sds_ring->napi,
- qlcnic_rx_poll,
- NAPI_POLL_WEIGHT);
- }
- }
- 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(netdev, &tx_ring->napi, qlcnic_tx_poll,
- NAPI_POLL_WEIGHT);
- }
- }
- 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(&sds_ring->napi);
- 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(&sds_ring->napi);
- 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;
- budget = QLCNIC_TX_POLL_BUDGET;
- tx_ring = container_of(napi, struct qlcnic_host_tx_ring, napi);
- adapter = tx_ring->adapter;
- work_done = qlcnic_process_cmd_ring(adapter, tx_ring, budget);
- if (work_done) {
- napi_complete(&tx_ring->napi);
- if (test_bit(__QLCNIC_DEV_UP , &adapter->state))
- qlcnic_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(&sds_ring->napi);
- 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,
- NAPI_POLL_WEIGHT);
- else
- netif_napi_add(netdev, &sds_ring->napi,
- qlcnic_83xx_msix_sriov_vf_poll,
- NAPI_POLL_WEIGHT);
- } else {
- netif_napi_add(netdev, &sds_ring->napi,
- qlcnic_83xx_poll,
- NAPI_POLL_WEIGHT);
- }
- }
- 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(netdev, &tx_ring->napi,
- qlcnic_83xx_msix_tx_poll,
- NAPI_POLL_WEIGHT);
- }
- }
- return 0;
- }
- void qlcnic_83xx_napi_del(struct qlcnic_adapter *adapter)
- {
- int ring;
- struct qlcnic_host_sds_ring *sds_ring;
- struct qlcnic_recv_context *recv_ctx = adapter->recv_ctx;
- struct qlcnic_host_tx_ring *tx_ring;
- for (ring = 0; ring < adapter->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(qlcnic_83xx_hndl(sts_data[0]));
- qlcnic_83xx_process_rcv_diag(adapter, ring, sts_data);
- desc = &sds_ring->desc_head[consumer];
- desc->status_desc_data[0] = cpu_to_le64(STATUS_OWNER_PHANTOM);
- consumer = get_next_index(consumer, sds_ring->num_desc);
- sds_ring->consumer = consumer;
- writel(consumer, sds_ring->crb_sts_consumer);
- }
|