mirror of
https://github.com/opnsense/src.git
synced 2026-04-04 17:05:14 -04:00
Add support for TCP/IP checksum offload.
No, really.
This commit is contained in:
Bill Paul
parent
d4030ed6c5
commit
d74c903a6f
2 changed files with 217 additions and 25 deletions
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@ -120,11 +120,12 @@ static void ndis_shutdown (device_t);
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static int ndis_ifmedia_upd (struct ifnet *);
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static void ndis_ifmedia_sts (struct ifnet *, struct ifmediareq *);
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static int ndis_get_assoc (struct ndis_softc *, ndis_wlan_bssid_ex *);
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static int ndis_probe_offload (struct ndis_softc *);
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static int ndis_set_offload (struct ndis_softc *);
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static void ndis_getstate_80211 (struct ndis_softc *);
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static void ndis_setstate_80211 (struct ndis_softc *);
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static void ndis_media_status (struct ifnet *, struct ifmediareq *);
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static void ndis_reset (struct ndis_softc *);
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static void ndis_setmulti (struct ndis_softc *);
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static void ndis_map_sclist (void *, bus_dma_segment_t *,
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int, bus_size_t, int);
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@ -240,14 +241,6 @@ out:
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return;
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}
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static void
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ndis_reset(sc)
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struct ndis_softc *sc;
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{
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ndis_reset_nic(sc);
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return;
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}
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/*
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* Probe for an NDIS device. Check the PCI vendor and device
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* IDs against our list and return a device name if we find a match.
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@ -274,6 +267,158 @@ ndis_probe(dev)
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return(ENXIO);
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}
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static int
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ndis_set_offload(sc)
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struct ndis_softc *sc;
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{
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ndis_task_offload *nto;
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ndis_task_offload_hdr *ntoh;
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ndis_task_tcpip_csum *nttc;
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struct ifnet *ifp;
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int len, error;
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ifp = &sc->arpcom.ac_if;
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if (!(ifp->if_flags & IFF_UP))
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return(EINVAL);
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/* See if there's anything to set. */
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error = ndis_probe_offload(sc);
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if (error)
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return(error);
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if (sc->ndis_hwassist == 0 && ifp->if_capabilities == 0)
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return(0);
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len = sizeof(ndis_task_offload_hdr) + sizeof(ndis_task_offload) +
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sizeof(ndis_task_tcpip_csum);
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ntoh = malloc(len, M_TEMP, M_NOWAIT|M_ZERO);
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if (ntoh == NULL)
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return(ENOMEM);
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ntoh->ntoh_vers = NDIS_TASK_OFFLOAD_VERSION;
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ntoh->ntoh_len = sizeof(ndis_task_offload_hdr);
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ntoh->ntoh_offset_firsttask = sizeof(ndis_task_offload_hdr);
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ntoh->ntoh_encapfmt.nef_encaphdrlen = sizeof(struct ether_header);
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ntoh->ntoh_encapfmt.nef_encap = NDIS_ENCAP_IEEE802_3;
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ntoh->ntoh_encapfmt.nef_flags = NDIS_ENCAPFLAG_FIXEDHDRLEN;
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nto = (ndis_task_offload *)((char *)ntoh +
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ntoh->ntoh_offset_firsttask);
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nto->nto_vers = NDIS_TASK_OFFLOAD_VERSION;
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nto->nto_len = sizeof(ndis_task_offload);
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nto->nto_task = NDIS_TASK_TCPIP_CSUM;
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nto->nto_offset_nexttask = 0;
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nto->nto_taskbuflen = sizeof(ndis_task_tcpip_csum);
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nttc = (ndis_task_tcpip_csum *)nto->nto_taskbuf;
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if (ifp->if_capenable & IFCAP_TXCSUM)
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nttc->nttc_v4tx = sc->ndis_v4tx;
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if (ifp->if_capenable & IFCAP_RXCSUM)
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nttc->nttc_v4rx = sc->ndis_v4rx;
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error = ndis_set_info(sc, OID_TCP_TASK_OFFLOAD, ntoh, &len);
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free(ntoh, M_TEMP);
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return(error);
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}
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static int
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ndis_probe_offload(sc)
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struct ndis_softc *sc;
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{
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ndis_task_offload *nto;
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ndis_task_offload_hdr *ntoh;
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ndis_task_tcpip_csum *nttc = NULL;
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struct ifnet *ifp;
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int len, error, dummy;
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ifp = &sc->arpcom.ac_if;
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len = sizeof(dummy);
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error = ndis_get_info(sc, OID_TCP_TASK_OFFLOAD, &dummy, &len);
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if (error != ENOSPC)
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return(error);
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ntoh = malloc(len, M_TEMP, M_NOWAIT|M_ZERO);
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if (ntoh == NULL)
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return(ENOMEM);
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ntoh->ntoh_vers = NDIS_TASK_OFFLOAD_VERSION;
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ntoh->ntoh_len = sizeof(ndis_task_offload_hdr);
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ntoh->ntoh_encapfmt.nef_encaphdrlen = sizeof(struct ether_header);
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ntoh->ntoh_encapfmt.nef_encap = NDIS_ENCAP_IEEE802_3;
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ntoh->ntoh_encapfmt.nef_flags = NDIS_ENCAPFLAG_FIXEDHDRLEN;
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error = ndis_get_info(sc, OID_TCP_TASK_OFFLOAD, ntoh, &len);
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if (error) {
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free(ntoh, M_TEMP);
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return(error);
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}
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if (ntoh->ntoh_vers != NDIS_TASK_OFFLOAD_VERSION) {
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free(ntoh, M_TEMP);
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return(EINVAL);
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}
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nto = (ndis_task_offload *)((char *)ntoh +
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ntoh->ntoh_offset_firsttask);
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while (1) {
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switch (nto->nto_task) {
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case NDIS_TASK_TCPIP_CSUM:
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nttc = (ndis_task_tcpip_csum *)nto->nto_taskbuf;
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break;
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/* Don't handle these yet. */
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case NDIS_TASK_IPSEC:
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case NDIS_TASK_TCP_LARGESEND:
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default:
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break;
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}
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if (nto->nto_offset_nexttask == 0)
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break;
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nto = (ndis_task_offload *)((char *)nto +
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nto->nto_offset_nexttask);
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}
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if (nttc == NULL) {
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free(ntoh, M_TEMP);
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return(ENOENT);
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}
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sc->ndis_v4tx = nttc->nttc_v4tx;
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sc->ndis_v4rx = nttc->nttc_v4rx;
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if (nttc->nttc_v4tx & NDIS_TCPSUM_FLAGS_IP_CSUM)
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sc->ndis_hwassist |= CSUM_IP;
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if (nttc->nttc_v4tx & NDIS_TCPSUM_FLAGS_TCP_CSUM)
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sc->ndis_hwassist |= CSUM_TCP;
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if (nttc->nttc_v4tx & NDIS_TCPSUM_FLAGS_UDP_CSUM)
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sc->ndis_hwassist |= CSUM_UDP;
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if (sc->ndis_hwassist)
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ifp->if_capabilities |= IFCAP_TXCSUM;
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if (nttc->nttc_v4rx & NDIS_TCPSUM_FLAGS_IP_CSUM)
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ifp->if_capabilities |= IFCAP_RXCSUM;
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if (nttc->nttc_v4rx & NDIS_TCPSUM_FLAGS_TCP_CSUM)
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ifp->if_capabilities |= IFCAP_RXCSUM;
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if (nttc->nttc_v4rx & NDIS_TCPSUM_FLAGS_UDP_CSUM)
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ifp->if_capabilities |= IFCAP_RXCSUM;
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free(ntoh, M_TEMP);
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return(0);
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}
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/*
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* Attach the interface. Allocate softc structures, do ifmedia
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* setup and ethernet/BPF attach.
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@ -292,7 +437,6 @@ ndis_attach(dev)
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struct resource_list *rl;
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struct resource_list_entry *rle;
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sc = device_get_softc(dev);
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unit = device_get_unit(dev);
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sc->ndis_dev = dev;
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@ -465,7 +609,7 @@ ndis_attach(dev)
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}
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/* Reset the adapter. */
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ndis_reset(sc);
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ndis_reset_nic(sc);
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/*
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* Get station address from the driver.
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@ -515,6 +659,9 @@ ndis_attach(dev)
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}
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}
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/* Check for task offload support. */
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ndis_probe_offload(sc);
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/*
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* An NDIS device was detected. Inform the world.
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*/
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@ -533,6 +680,8 @@ ndis_attach(dev)
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ifp->if_init = ndis_init;
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ifp->if_baudrate = 10000000;
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ifp->if_snd.ifq_maxlen = 50;
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ifp->if_capenable = ifp->if_capabilities;
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ifp->if_hwassist = sc->ndis_hwassist;
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/* Do media setup */
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if (sc->ndis_80211) {
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@ -823,6 +972,8 @@ ndis_rxeof(adapter, packets, pktcnt)
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struct ndis_softc *sc;
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ndis_miniport_block *block;
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ndis_packet *p;
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uint32_t s;
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ndis_tcpip_csum *csum;
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struct ifnet *ifp;
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struct mbuf *m0, *m;
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int i;
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@ -851,6 +1002,27 @@ ndis_rxeof(adapter, packets, pktcnt)
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p->np_oob.npo_status = NDIS_STATUS_PENDING;
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m0->m_pkthdr.rcvif = ifp;
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ifp->if_ipackets++;
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/* Deal with checksum offload. */
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if (ifp->if_capenable & IFCAP_RXCSUM &&
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p->np_ext.npe_info[ndis_tcpipcsum_info] != NULL) {
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s = (uintptr_t)
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p->np_ext.npe_info[ndis_tcpipcsum_info];
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csum = (ndis_tcpip_csum *)&s;
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if (csum->u.ntc_rxflags &
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NDIS_RXCSUM_IP_PASSED)
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m0->m_pkthdr.csum_flags |=
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CSUM_IP_CHECKED|CSUM_IP_VALID;
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if (csum->u.ntc_rxflags &
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(NDIS_RXCSUM_TCP_PASSED |
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NDIS_RXCSUM_UDP_PASSED)) {
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m0->m_pkthdr.csum_flags |=
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CSUM_DATA_VALID|CSUM_PSEUDO_HDR;
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m0->m_pkthdr.csum_data = 0xFFFF;
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}
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}
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(*ifp->if_input)(ifp, m0);
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}
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}
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@ -1115,6 +1287,7 @@ ndis_start(ifp)
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struct ndis_softc *sc;
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struct mbuf *m = NULL;
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ndis_packet **p0 = NULL, *p = NULL;
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ndis_tcpip_csum *csum;
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int pcnt = 0;
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sc = ifp->if_softc;
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@ -1164,6 +1337,22 @@ ndis_start(ifp)
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p->np_ext.npe_info[ndis_sclist_info] = &p->np_sclist;
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}
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/* Handle checksum offload. */
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if (ifp->if_capenable & IFCAP_TXCSUM &&
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m->m_pkthdr.csum_flags) {
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csum = (ndis_tcpip_csum *)
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&p->np_ext.npe_info[ndis_tcpipcsum_info];
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csum->u.ntc_txflags = NDIS_TXCSUM_DO_IPV4;
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if (m->m_pkthdr.csum_flags & CSUM_IP)
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csum->u.ntc_txflags |= NDIS_TXCSUM_DO_IP;
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if (m->m_pkthdr.csum_flags & CSUM_TCP)
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csum->u.ntc_txflags |= NDIS_TXCSUM_DO_TCP;
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if (m->m_pkthdr.csum_flags & CSUM_UDP)
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csum->u.ntc_txflags |= NDIS_TXCSUM_DO_UDP;
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p->np_private.npp_flags = NDIS_PROTOCOL_ID_TCP_IP;
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}
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NDIS_INC(sc);
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sc->ndis_txpending--;
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@ -1214,7 +1403,7 @@ ndis_init(xsc)
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/*
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* Cancel pending I/O and free all RX/TX buffers.
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*/
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ndis_reset(sc);
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ndis_reset_nic(sc);
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ndis_stop(sc);
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ndis_init_nic(sc);
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@ -1243,6 +1432,10 @@ ndis_init(xsc)
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*/
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ndis_setmulti(sc);
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/* Setup task offload. */
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ndis_set_offload(sc);
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/* Enable interrupts. */
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ndis_enable_intr(sc);
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if (sc->ndis_80211)
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@ -1766,6 +1959,14 @@ ndis_ioctl(ifp, command, data)
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} else
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error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command);
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break;
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case SIOCSIFCAP:
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ifp->if_capenable = ifr->ifr_reqcap;
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if (ifp->if_capenable & IFCAP_TXCSUM)
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ifp->if_hwassist = sc->ndis_hwassist;
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else
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ifp->if_hwassist = 0;
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ndis_set_offload(sc);
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break;
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case SIOCGIFGENERIC:
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case SIOCSIFGENERIC:
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if (sc->ndis_80211 && ifp->if_flags & IFF_UP) {
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@ -1925,7 +2126,7 @@ ndis_watchdog(ifp)
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device_printf(sc->ndis_dev, "watchdog timeout\n");
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NDIS_UNLOCK(sc);
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ndis_reset(sc);
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ndis_reset_nic(sc);
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ndis_sched(ndis_starttask, ifp, NDIS_TASKQUEUE);
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return;
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@ -32,18 +32,6 @@
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* $FreeBSD$
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*/
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#define NDIS_PCI_LOIO 0x10
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#define NDIS_PCI_LOMEM 0x14
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struct ndis_chain_onefrag {
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void *dummy;
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};
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struct ndis_chain {
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void *dummy;
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};
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struct ndis_type {
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uint16_t ndis_vid;
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uint16_t ndis_did;
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@ -76,6 +64,9 @@ struct ndis_softc {
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struct ieee80211com arpcom; /* interface info */
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#endif
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struct ifmedia ifmedia; /* media info */
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u_long ndis_hwassist;
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uint32_t ndis_v4tx;
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uint32_t ndis_v4rx;
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bus_space_handle_t ndis_bhandle;
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bus_space_tag_t ndis_btag;
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void *ndis_intrhand;
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