diff options
| -rw-r--r-- | sys/dev/e1000/if_em.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c index d06627bcfda1..ad12171487f6 100644 --- a/sys/dev/e1000/if_em.c +++ b/sys/dev/e1000/if_em.c @@ -354,6 +354,7 @@ static void em_enable_vectors_82574(if_ctx_t); static int em_set_flowcntl(SYSCTL_HANDLER_ARGS); static int em_sysctl_eee(SYSCTL_HANDLER_ARGS); +static int igb_sysctl_dmac(SYSCTL_HANDLER_ARGS); static void em_if_led_func(if_ctx_t, int); static int em_get_regs(SYSCTL_HANDLER_ARGS); @@ -855,6 +856,12 @@ em_if_attach_pre(if_ctx_t ctx) CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0, em_get_rs, "I", "Dump RS indexes"); + if (hw->mac.type >= e1000_i350) { + SYSCTL_ADD_PROC(ctx_list, child, OID_AUTO, "dmac", + CTLTYPE_INT | CTLFLAG_RW, sc, 0, + igb_sysctl_dmac, "I", "DMA Coalesce"); + } + scctx->isc_tx_nsegments = EM_MAX_SCATTER; scctx->isc_nrxqsets_max = scctx->isc_ntxqsets_max = em_set_num_queues(ctx); if (bootverbose) @@ -4974,6 +4981,55 @@ em_set_flowcntl(SYSCTL_HANDLER_ARGS) } /* + * Manage DMA Coalesce: + * Control values: + * 0/1 - off/on + * Legal timer values are: + * 250,500,1000-10000 in thousands + */ +static int +igb_sysctl_dmac(SYSCTL_HANDLER_ARGS) +{ + struct e1000_softc *sc = (struct e1000_softc *) arg1; + int error; + + error = sysctl_handle_int(oidp, &sc->dmac, 0, req); + + if ((error) || (req->newptr == NULL)) + return (error); + + switch (sc->dmac) { + case 0: + /* Disabling */ + break; + case 1: /* Just enable and use default */ + sc->dmac = 1000; + break; + case 250: + case 500: + case 1000: + case 2000: + case 3000: + case 4000: + case 5000: + case 6000: + case 7000: + case 8000: + case 9000: + case 10000: + /* Legal values - allow */ + break; + default: + /* Do nothing, illegal value */ + sc->dmac = 0; + return (EINVAL); + } + /* Reinit the interface */ + em_if_init(sc->ctx); + return (error); +} + +/* * Manage Energy Efficient Ethernet: * Control values: * 0/1 - enabled/disabled |