Author: sephe Date: Sun Sep 18 08:19:33 2016 New Revision: 305926 URL: https://svnweb.freebsd.org/changeset/base/305926
Log: hyperv/hn: Add sysctls to dynamic adjust RSS key and indirect table MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D7890 Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c head/sys/dev/hyperv/netvsc/hv_rndis_filter.c head/sys/dev/hyperv/netvsc/if_hnvar.h head/sys/dev/hyperv/netvsc/ndis.h Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c ============================================================================== --- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Sun Sep 18 08:10:40 2016 (r305925) +++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Sun Sep 18 08:19:33 2016 (r305926) @@ -325,6 +325,8 @@ static int hn_rx_stat_ulong_sysctl(SYSCT static int hn_tx_stat_ulong_sysctl(SYSCTL_HANDLER_ARGS); static int hn_tx_conf_int_sysctl(SYSCTL_HANDLER_ARGS); static int hn_ndis_version_sysctl(SYSCTL_HANDLER_ARGS); +static int hn_rss_key_sysctl(SYSCTL_HANDLER_ARGS); +static int hn_rss_ind_sysctl(SYSCTL_HANDLER_ARGS); static int hn_check_iplen(const struct mbuf *, int); static int hn_create_tx_ring(struct hn_softc *, int); static void hn_destroy_tx_ring(struct hn_tx_ring *); @@ -391,6 +393,42 @@ hn_get_txswq_depth(const struct hn_tx_ri } static int +hn_rss_reconfig(struct hn_softc *sc) +{ + int error; + + HN_LOCK_ASSERT(sc); + + /* + * Disable RSS first. + * + * NOTE: + * Direct reconfiguration by setting the UNCHG flags does + * _not_ work properly. + */ + if (bootverbose) + if_printf(sc->hn_ifp, "disable RSS\n"); + error = hn_rndis_conf_rss(sc, NDIS_RSS_FLAG_DISABLE); + if (error) { + if_printf(sc->hn_ifp, "RSS disable failed\n"); + return (error); + } + + /* + * Reenable the RSS w/ the updated RSS key or indirect + * table. + */ + if (bootverbose) + if_printf(sc->hn_ifp, "reconfig RSS\n"); + error = hn_rndis_conf_rss(sc, NDIS_RSS_FLAG_NONE); + if (error) { + if_printf(sc->hn_ifp, "RSS reconfig failed\n"); + return (error); + } + return (0); +} + +static int hn_ifmedia_upd(struct ifnet *ifp __unused) { @@ -583,6 +621,12 @@ netvsc_attach(device_t dev) SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "ndis_version", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, hn_ndis_version_sysctl, "A", "NDIS version"); + SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rss_key", + CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0, + hn_rss_key_sysctl, "IU", "RSS key"); + SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rss_ind", + CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_MPSAFE, sc, 0, + hn_rss_ind_sysctl, "IU", "RSS indirect table"); /* * Setup the ifmedia, which has been initialized earlier. @@ -2031,6 +2075,50 @@ hn_ndis_version_sysctl(SYSCTL_HANDLER_AR } static int +hn_rss_key_sysctl(SYSCTL_HANDLER_ARGS) +{ + struct hn_softc *sc = arg1; + int error; + + HN_LOCK(sc); + + error = SYSCTL_OUT(req, sc->hn_rss.rss_key, sizeof(sc->hn_rss.rss_key)); + if (error || req->newptr == NULL) + goto back; + + error = SYSCTL_IN(req, sc->hn_rss.rss_key, sizeof(sc->hn_rss.rss_key)); + if (error) + goto back; + + error = hn_rss_reconfig(sc); +back: + HN_UNLOCK(sc); + return (error); +} + +static int +hn_rss_ind_sysctl(SYSCTL_HANDLER_ARGS) +{ + struct hn_softc *sc = arg1; + int error; + + HN_LOCK(sc); + + error = SYSCTL_OUT(req, sc->hn_rss.rss_ind, sizeof(sc->hn_rss.rss_ind)); + if (error || req->newptr == NULL) + goto back; + + error = SYSCTL_IN(req, sc->hn_rss.rss_ind, sizeof(sc->hn_rss.rss_ind)); + if (error) + goto back; + + error = hn_rss_reconfig(sc); +back: + HN_UNLOCK(sc); + return (error); +} + +static int hn_check_iplen(const struct mbuf *m, int hoff) { const struct ip *ip; @@ -3179,7 +3267,7 @@ hn_synth_attach(struct hn_softc *sc, int rss->rss_ind[i] = i % nchan; } - error = hn_rndis_conf_rss(sc); + error = hn_rndis_conf_rss(sc, NDIS_RSS_FLAG_NONE); if (error) { /* * Failed to configure RSS key or indirect table; only Modified: head/sys/dev/hyperv/netvsc/hv_rndis_filter.c ============================================================================== --- head/sys/dev/hyperv/netvsc/hv_rndis_filter.c Sun Sep 18 08:10:40 2016 (r305925) +++ head/sys/dev/hyperv/netvsc/hv_rndis_filter.c Sun Sep 18 08:19:33 2016 (r305926) @@ -837,7 +837,7 @@ hn_rndis_conf_offload(struct hn_softc *s } int -hn_rndis_conf_rss(struct hn_softc *sc) +hn_rndis_conf_rss(struct hn_softc *sc, uint16_t flags) { struct ndis_rssprm_toeplitz *rss = &sc->hn_rss; struct ndis_rss_params *prm = &rss->rss_params; @@ -858,6 +858,7 @@ hn_rndis_conf_rss(struct hn_softc *sc) prm->ndis_hdr.ndis_type = NDIS_OBJTYPE_RSS_PARAMS; prm->ndis_hdr.ndis_rev = NDIS_RSS_PARAMS_REV_2; prm->ndis_hdr.ndis_size = sizeof(*rss); + prm->ndis_flags = flags; prm->ndis_hash = NDIS_HASH_FUNCTION_TOEPLITZ | NDIS_HASH_IPV4 | NDIS_HASH_TCP_IPV4 | NDIS_HASH_IPV6 | NDIS_HASH_TCP_IPV6; Modified: head/sys/dev/hyperv/netvsc/if_hnvar.h ============================================================================== --- head/sys/dev/hyperv/netvsc/if_hnvar.h Sun Sep 18 08:10:40 2016 (r305925) +++ head/sys/dev/hyperv/netvsc/if_hnvar.h Sun Sep 18 08:19:33 2016 (r305926) @@ -118,7 +118,7 @@ uint32_t hn_chim_alloc(struct hn_softc * void hn_chim_free(struct hn_softc *sc, uint32_t chim_idx); int hn_rndis_attach(struct hn_softc *sc); -int hn_rndis_conf_rss(struct hn_softc *sc); +int hn_rndis_conf_rss(struct hn_softc *sc, uint16_t flags); void *hn_rndis_pktinfo_append(struct rndis_packet_msg *, size_t pktsize, size_t pi_dlen, uint32_t pi_type); int hn_rndis_get_rsscaps(struct hn_softc *sc, int *rxr_cnt); Modified: head/sys/dev/hyperv/netvsc/ndis.h ============================================================================== --- head/sys/dev/hyperv/netvsc/ndis.h Sun Sep 18 08:10:40 2016 (r305925) +++ head/sys/dev/hyperv/netvsc/ndis.h Sun Sep 18 08:19:33 2016 (r305926) @@ -188,6 +188,7 @@ struct ndis_rss_params { #define NDIS_RSS_PARAMS_REV_1 1 /* NDIS 6.0 */ #define NDIS_RSS_PARAMS_REV_2 2 /* NDIS 6.20 */ +#define NDIS_RSS_FLAG_NONE 0x0000 #define NDIS_RSS_FLAG_BCPU_UNCHG 0x0001 #define NDIS_RSS_FLAG_HASH_UNCHG 0x0002 #define NDIS_RSS_FLAG_IND_UNCHG 0x0004 _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
