diff options
author | wpaul <wpaul@FreeBSD.org> | 2004-01-22 02:36:34 +0000 |
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committer | wpaul <wpaul@FreeBSD.org> | 2004-01-22 02:36:34 +0000 |
commit | 39e6c1e2a7a40825b080ad4ee521e7d313733cc5 (patch) | |
tree | 884f7363d1b680ddcfcdbcd8b220ded0c85eeda9 /sys/dev/if_ndis | |
parent | 7cdb0aaab9439a417a147e00521de31b13220a2e (diff) | |
download | FreeBSD-src-39e6c1e2a7a40825b080ad4ee521e7d313733cc5.zip FreeBSD-src-39e6c1e2a7a40825b080ad4ee521e7d313733cc5.tar.gz |
Add support for TCP/IP checksum offload.
No, really.
Diffstat (limited to 'sys/dev/if_ndis')
-rw-r--r-- | sys/dev/if_ndis/if_ndis.c | 227 | ||||
-rw-r--r-- | sys/dev/if_ndis/if_ndisvar.h | 15 |
2 files changed, 217 insertions, 25 deletions
diff --git a/sys/dev/if_ndis/if_ndis.c b/sys/dev/if_ndis/if_ndis.c index 8d725d5..7bc343e 100644 --- a/sys/dev/if_ndis/if_ndis.c +++ b/sys/dev/if_ndis/if_ndis.c @@ -120,11 +120,12 @@ static void ndis_shutdown (device_t); static int ndis_ifmedia_upd (struct ifnet *); static void ndis_ifmedia_sts (struct ifnet *, struct ifmediareq *); static int ndis_get_assoc (struct ndis_softc *, ndis_wlan_bssid_ex *); +static int ndis_probe_offload (struct ndis_softc *); +static int ndis_set_offload (struct ndis_softc *); static void ndis_getstate_80211 (struct ndis_softc *); static void ndis_setstate_80211 (struct ndis_softc *); static void ndis_media_status (struct ifnet *, struct ifmediareq *); -static void ndis_reset (struct ndis_softc *); static void ndis_setmulti (struct ndis_softc *); static void ndis_map_sclist (void *, bus_dma_segment_t *, int, bus_size_t, int); @@ -240,14 +241,6 @@ out: return; } -static void -ndis_reset(sc) - struct ndis_softc *sc; -{ - ndis_reset_nic(sc); - return; -} - /* * Probe for an NDIS device. Check the PCI vendor and device * IDs against our list and return a device name if we find a match. @@ -274,6 +267,158 @@ ndis_probe(dev) return(ENXIO); } +static int +ndis_set_offload(sc) + struct ndis_softc *sc; +{ + ndis_task_offload *nto; + ndis_task_offload_hdr *ntoh; + ndis_task_tcpip_csum *nttc; + struct ifnet *ifp; + int len, error; + + ifp = &sc->arpcom.ac_if; + + if (!(ifp->if_flags & IFF_UP)) + return(EINVAL); + + /* See if there's anything to set. */ + + error = ndis_probe_offload(sc); + if (error) + return(error); + + if (sc->ndis_hwassist == 0 && ifp->if_capabilities == 0) + return(0); + + len = sizeof(ndis_task_offload_hdr) + sizeof(ndis_task_offload) + + sizeof(ndis_task_tcpip_csum); + + ntoh = malloc(len, M_TEMP, M_NOWAIT|M_ZERO); + + if (ntoh == NULL) + return(ENOMEM); + + ntoh->ntoh_vers = NDIS_TASK_OFFLOAD_VERSION; + ntoh->ntoh_len = sizeof(ndis_task_offload_hdr); + ntoh->ntoh_offset_firsttask = sizeof(ndis_task_offload_hdr); + ntoh->ntoh_encapfmt.nef_encaphdrlen = sizeof(struct ether_header); + ntoh->ntoh_encapfmt.nef_encap = NDIS_ENCAP_IEEE802_3; + ntoh->ntoh_encapfmt.nef_flags = NDIS_ENCAPFLAG_FIXEDHDRLEN; + + nto = (ndis_task_offload *)((char *)ntoh + + ntoh->ntoh_offset_firsttask); + + nto->nto_vers = NDIS_TASK_OFFLOAD_VERSION; + nto->nto_len = sizeof(ndis_task_offload); + nto->nto_task = NDIS_TASK_TCPIP_CSUM; + nto->nto_offset_nexttask = 0; + nto->nto_taskbuflen = sizeof(ndis_task_tcpip_csum); + + nttc = (ndis_task_tcpip_csum *)nto->nto_taskbuf; + + if (ifp->if_capenable & IFCAP_TXCSUM) + nttc->nttc_v4tx = sc->ndis_v4tx; + + if (ifp->if_capenable & IFCAP_RXCSUM) + nttc->nttc_v4rx = sc->ndis_v4rx; + + error = ndis_set_info(sc, OID_TCP_TASK_OFFLOAD, ntoh, &len); + free(ntoh, M_TEMP); + + return(error); +} + +static int +ndis_probe_offload(sc) + struct ndis_softc *sc; +{ + ndis_task_offload *nto; + ndis_task_offload_hdr *ntoh; + ndis_task_tcpip_csum *nttc = NULL; + struct ifnet *ifp; + int len, error, dummy; + + ifp = &sc->arpcom.ac_if; + + len = sizeof(dummy); + error = ndis_get_info(sc, OID_TCP_TASK_OFFLOAD, &dummy, &len); + + if (error != ENOSPC) + return(error); + + ntoh = malloc(len, M_TEMP, M_NOWAIT|M_ZERO); + + if (ntoh == NULL) + return(ENOMEM); + + ntoh->ntoh_vers = NDIS_TASK_OFFLOAD_VERSION; + ntoh->ntoh_len = sizeof(ndis_task_offload_hdr); + ntoh->ntoh_encapfmt.nef_encaphdrlen = sizeof(struct ether_header); + ntoh->ntoh_encapfmt.nef_encap = NDIS_ENCAP_IEEE802_3; + ntoh->ntoh_encapfmt.nef_flags = NDIS_ENCAPFLAG_FIXEDHDRLEN; + + error = ndis_get_info(sc, OID_TCP_TASK_OFFLOAD, ntoh, &len); + + if (error) { + free(ntoh, M_TEMP); + return(error); + } + + if (ntoh->ntoh_vers != NDIS_TASK_OFFLOAD_VERSION) { + free(ntoh, M_TEMP); + return(EINVAL); + } + + nto = (ndis_task_offload *)((char *)ntoh + + ntoh->ntoh_offset_firsttask); + + while (1) { + switch (nto->nto_task) { + case NDIS_TASK_TCPIP_CSUM: + nttc = (ndis_task_tcpip_csum *)nto->nto_taskbuf; + break; + /* Don't handle these yet. */ + case NDIS_TASK_IPSEC: + case NDIS_TASK_TCP_LARGESEND: + default: + break; + } + if (nto->nto_offset_nexttask == 0) + break; + nto = (ndis_task_offload *)((char *)nto + + nto->nto_offset_nexttask); + } + + if (nttc == NULL) { + free(ntoh, M_TEMP); + return(ENOENT); + } + + sc->ndis_v4tx = nttc->nttc_v4tx; + sc->ndis_v4rx = nttc->nttc_v4rx; + + if (nttc->nttc_v4tx & NDIS_TCPSUM_FLAGS_IP_CSUM) + sc->ndis_hwassist |= CSUM_IP; + if (nttc->nttc_v4tx & NDIS_TCPSUM_FLAGS_TCP_CSUM) + sc->ndis_hwassist |= CSUM_TCP; + if (nttc->nttc_v4tx & NDIS_TCPSUM_FLAGS_UDP_CSUM) + sc->ndis_hwassist |= CSUM_UDP; + + if (sc->ndis_hwassist) + ifp->if_capabilities |= IFCAP_TXCSUM; + + if (nttc->nttc_v4rx & NDIS_TCPSUM_FLAGS_IP_CSUM) + ifp->if_capabilities |= IFCAP_RXCSUM; + if (nttc->nttc_v4rx & NDIS_TCPSUM_FLAGS_TCP_CSUM) + ifp->if_capabilities |= IFCAP_RXCSUM; + if (nttc->nttc_v4rx & NDIS_TCPSUM_FLAGS_UDP_CSUM) + ifp->if_capabilities |= IFCAP_RXCSUM; + + free(ntoh, M_TEMP); + return(0); +} + /* * Attach the interface. Allocate softc structures, do ifmedia * setup and ethernet/BPF attach. @@ -292,7 +437,6 @@ ndis_attach(dev) struct resource_list *rl; struct resource_list_entry *rle; - sc = device_get_softc(dev); unit = device_get_unit(dev); sc->ndis_dev = dev; @@ -465,7 +609,7 @@ ndis_attach(dev) } /* Reset the adapter. */ - ndis_reset(sc); + ndis_reset_nic(sc); /* * Get station address from the driver. @@ -515,6 +659,9 @@ ndis_attach(dev) } } + /* Check for task offload support. */ + ndis_probe_offload(sc); + /* * An NDIS device was detected. Inform the world. */ @@ -533,6 +680,8 @@ ndis_attach(dev) ifp->if_init = ndis_init; ifp->if_baudrate = 10000000; ifp->if_snd.ifq_maxlen = 50; + ifp->if_capenable = ifp->if_capabilities; + ifp->if_hwassist = sc->ndis_hwassist; /* Do media setup */ if (sc->ndis_80211) { @@ -823,6 +972,8 @@ ndis_rxeof(adapter, packets, pktcnt) struct ndis_softc *sc; ndis_miniport_block *block; ndis_packet *p; + uint32_t s; + ndis_tcpip_csum *csum; struct ifnet *ifp; struct mbuf *m0, *m; int i; @@ -851,6 +1002,27 @@ ndis_rxeof(adapter, packets, pktcnt) p->np_oob.npo_status = NDIS_STATUS_PENDING; m0->m_pkthdr.rcvif = ifp; ifp->if_ipackets++; + + /* Deal with checksum offload. */ + + if (ifp->if_capenable & IFCAP_RXCSUM && + p->np_ext.npe_info[ndis_tcpipcsum_info] != NULL) { + s = (uintptr_t) + p->np_ext.npe_info[ndis_tcpipcsum_info]; + csum = (ndis_tcpip_csum *)&s; + if (csum->u.ntc_rxflags & + NDIS_RXCSUM_IP_PASSED) + m0->m_pkthdr.csum_flags |= + CSUM_IP_CHECKED|CSUM_IP_VALID; + if (csum->u.ntc_rxflags & + (NDIS_RXCSUM_TCP_PASSED | + NDIS_RXCSUM_UDP_PASSED)) { + m0->m_pkthdr.csum_flags |= + CSUM_DATA_VALID|CSUM_PSEUDO_HDR; + m0->m_pkthdr.csum_data = 0xFFFF; + } + } + (*ifp->if_input)(ifp, m0); } } @@ -1115,6 +1287,7 @@ ndis_start(ifp) struct ndis_softc *sc; struct mbuf *m = NULL; ndis_packet **p0 = NULL, *p = NULL; + ndis_tcpip_csum *csum; int pcnt = 0; sc = ifp->if_softc; @@ -1164,6 +1337,22 @@ ndis_start(ifp) p->np_ext.npe_info[ndis_sclist_info] = &p->np_sclist; } + /* Handle checksum offload. */ + + if (ifp->if_capenable & IFCAP_TXCSUM && + m->m_pkthdr.csum_flags) { + csum = (ndis_tcpip_csum *) + &p->np_ext.npe_info[ndis_tcpipcsum_info]; + csum->u.ntc_txflags = NDIS_TXCSUM_DO_IPV4; + if (m->m_pkthdr.csum_flags & CSUM_IP) + csum->u.ntc_txflags |= NDIS_TXCSUM_DO_IP; + if (m->m_pkthdr.csum_flags & CSUM_TCP) + csum->u.ntc_txflags |= NDIS_TXCSUM_DO_TCP; + if (m->m_pkthdr.csum_flags & CSUM_UDP) + csum->u.ntc_txflags |= NDIS_TXCSUM_DO_UDP; + p->np_private.npp_flags = NDIS_PROTOCOL_ID_TCP_IP; + } + NDIS_INC(sc); sc->ndis_txpending--; @@ -1214,7 +1403,7 @@ ndis_init(xsc) /* * Cancel pending I/O and free all RX/TX buffers. */ - ndis_reset(sc); + ndis_reset_nic(sc); ndis_stop(sc); ndis_init_nic(sc); @@ -1243,6 +1432,10 @@ ndis_init(xsc) */ ndis_setmulti(sc); + /* Setup task offload. */ + ndis_set_offload(sc); + + /* Enable interrupts. */ ndis_enable_intr(sc); if (sc->ndis_80211) @@ -1766,6 +1959,14 @@ ndis_ioctl(ifp, command, data) } else error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command); break; + case SIOCSIFCAP: + ifp->if_capenable = ifr->ifr_reqcap; + if (ifp->if_capenable & IFCAP_TXCSUM) + ifp->if_hwassist = sc->ndis_hwassist; + else + ifp->if_hwassist = 0; + ndis_set_offload(sc); + break; case SIOCGIFGENERIC: case SIOCSIFGENERIC: if (sc->ndis_80211 && ifp->if_flags & IFF_UP) { @@ -1925,7 +2126,7 @@ ndis_watchdog(ifp) device_printf(sc->ndis_dev, "watchdog timeout\n"); NDIS_UNLOCK(sc); - ndis_reset(sc); + ndis_reset_nic(sc); ndis_sched(ndis_starttask, ifp, NDIS_TASKQUEUE); return; diff --git a/sys/dev/if_ndis/if_ndisvar.h b/sys/dev/if_ndis/if_ndisvar.h index b202127..cd3627c 100644 --- a/sys/dev/if_ndis/if_ndisvar.h +++ b/sys/dev/if_ndis/if_ndisvar.h @@ -32,18 +32,6 @@ * $FreeBSD$ */ -#define NDIS_PCI_LOIO 0x10 -#define NDIS_PCI_LOMEM 0x14 - - -struct ndis_chain_onefrag { - void *dummy; -}; - -struct ndis_chain { - void *dummy; -}; - struct ndis_type { uint16_t ndis_vid; uint16_t ndis_did; @@ -76,6 +64,9 @@ struct ndis_softc { struct ieee80211com arpcom; /* interface info */ #endif struct ifmedia ifmedia; /* media info */ + u_long ndis_hwassist; + uint32_t ndis_v4tx; + uint32_t ndis_v4rx; bus_space_handle_t ndis_bhandle; bus_space_tag_t ndis_btag; void *ndis_intrhand; |