diff options
Diffstat (limited to 'sys/dev/mxge/if_mxge.c')
-rw-r--r-- | sys/dev/mxge/if_mxge.c | 59 |
1 files changed, 57 insertions, 2 deletions
diff --git a/sys/dev/mxge/if_mxge.c b/sys/dev/mxge/if_mxge.c index 88c3489..8fdc440 100644 --- a/sys/dev/mxge/if_mxge.c +++ b/sys/dev/mxge/if_mxge.c @@ -106,6 +106,7 @@ static int mxge_max_slices = 1; static int mxge_rss_hash_type = MXGEFW_RSS_HASH_TYPE_SRC_PORT; static int mxge_always_promisc = 0; static int mxge_initial_mtu = ETHERMTU_JUMBO; +static int mxge_throttle = 0; static char *mxge_fw_unaligned = "mxge_ethp_z8e"; static char *mxge_fw_aligned = "mxge_eth_z8e"; static char *mxge_fw_rss_aligned = "mxge_rss_eth_z8e"; @@ -596,10 +597,13 @@ static int mxge_select_firmware(mxge_softc_t *sc) { int aligned = 0; + int force_firmware = mxge_force_firmware; + if (sc->throttle) + force_firmware = sc->throttle; - if (mxge_force_firmware != 0) { - if (mxge_force_firmware == 1) + if (force_firmware != 0) { + if (force_firmware == 1) aligned = 1; else aligned = 0; @@ -1314,10 +1318,48 @@ mxge_reset(mxge_softc_t *sc, int interrupts_setup) mxge_change_promisc(sc, sc->ifp->if_flags & IFF_PROMISC); mxge_change_pause(sc, sc->pause); mxge_set_multicast_list(sc); + if (sc->throttle) { + cmd.data0 = sc->throttle; + if (mxge_send_cmd(sc, MXGEFW_CMD_SET_THROTTLE_FACTOR, + &cmd)) { + device_printf(sc->dev, + "can't enable throttle\n"); + } + } return status; } static int +mxge_change_throttle(SYSCTL_HANDLER_ARGS) +{ + mxge_cmd_t cmd; + mxge_softc_t *sc; + int err; + unsigned int throttle; + + sc = arg1; + throttle = sc->throttle; + err = sysctl_handle_int(oidp, &throttle, arg2, req); + if (err != 0) { + return err; + } + + if (throttle == sc->throttle) + return 0; + + if (throttle < MXGE_MIN_THROTTLE || throttle > MXGE_MAX_THROTTLE) + return EINVAL; + + mtx_lock(&sc->driver_mtx); + cmd.data0 = throttle; + err = mxge_send_cmd(sc, MXGEFW_CMD_SET_THROTTLE_FACTOR, &cmd); + if (err == 0) + sc->throttle = throttle; + mtx_unlock(&sc->driver_mtx); + return err; +} + +static int mxge_change_intr_coal(SYSCTL_HANDLER_ARGS) { mxge_softc_t *sc; @@ -1505,6 +1547,12 @@ mxge_add_sysctls(mxge_softc_t *sc) "I", "interrupt coalescing delay in usecs"); SYSCTL_ADD_PROC(ctx, children, OID_AUTO, + "throttle", + CTLTYPE_INT|CTLFLAG_RW, sc, + 0, mxge_change_throttle, + "I", "transmit throttling"); + + SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "flow_control_enabled", CTLTYPE_INT|CTLFLAG_RW, sc, 0, mxge_change_flow_control, @@ -4016,6 +4064,7 @@ mxge_fetch_tunables(mxge_softc_t *sc) TUNABLE_INT_FETCH("hw.mxge.rss_hash_type", &mxge_rss_hash_type); TUNABLE_INT_FETCH("hw.mxge.rss_hashtype", &mxge_rss_hash_type); TUNABLE_INT_FETCH("hw.mxge.initial_mtu", &mxge_initial_mtu); + TUNABLE_INT_FETCH("hw.mxge.throttle", &mxge_throttle); if (sc->lro_cnt != 0) mxge_lro_cnt = sc->lro_cnt; @@ -4033,6 +4082,12 @@ mxge_fetch_tunables(mxge_softc_t *sc) if (mxge_initial_mtu > ETHERMTU_JUMBO || mxge_initial_mtu < ETHER_MIN_LEN) mxge_initial_mtu = ETHERMTU_JUMBO; + + if (mxge_throttle && mxge_throttle > MXGE_MAX_THROTTLE) + mxge_throttle = MXGE_MAX_THROTTLE; + if (mxge_throttle && mxge_throttle < MXGE_MIN_THROTTLE) + mxge_throttle = MXGE_MIN_THROTTLE; + sc->throttle = mxge_throttle; } |