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Allow admin to specify the initial mtu upon driver load

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for mxge.
This commit is contained in:
Andrew Gallatin 2009-06-24 14:47:32 +00:00
parent 19e5b0a797
commit f945302517
1 changed files with 8 additions and 3 deletions
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11
sys/dev/mxge/if_mxge.c
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@ -105,6 +105,7 @@ static int mxge_ticks;
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 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";
@ -4009,6 +4010,7 @@ mxge_fetch_tunables(mxge_softc_t *sc)
TUNABLE_INT_FETCH("hw.mxge.lro_cnt", &sc->lro_cnt);
TUNABLE_INT_FETCH("hw.mxge.always_promisc", &mxge_always_promisc);
TUNABLE_INT_FETCH("hw.mxge.rss_hash_type", &mxge_rss_hash_type);
TUNABLE_INT_FETCH("hw.mxge.initial_mtu", &mxge_initial_mtu);
if (sc->lro_cnt != 0)
mxge_lro_cnt = sc->lro_cnt;
@ -4023,6 +4025,9 @@ mxge_fetch_tunables(mxge_softc_t *sc)
|| mxge_rss_hash_type > MXGEFW_RSS_HASH_TYPE_MAX) {
mxge_rss_hash_type = MXGEFW_RSS_HASH_TYPE_SRC_PORT;
}
if (mxge_initial_mtu > ETHERMTU_JUMBO ||
mxge_initial_mtu < ETHER_MIN_LEN)
mxge_initial_mtu = ETHERMTU_JUMBO;
}
@ -4586,9 +4591,9 @@ mxge_attach(device_t dev)
mxge_set_media(sc, IFM_ETHER | IFM_AUTO);
mxge_media_probe(sc);
ether_ifattach(ifp, sc->mac_addr);
/* ether_ifattach sets mtu to 1500 */
if (ifp->if_capabilities & IFCAP_JUMBO_MTU)
ifp->if_mtu = 9000;
/* ether_ifattach sets mtu to ETHERMTU */
if (mxge_initial_mtu != ETHERMTU)
mxge_change_mtu(sc, mxge_initial_mtu);
mxge_add_sysctls(sc);
#ifdef IFNET_BUF_RING