diff options
| -rw-r--r-- | sys/dev/cxgbe/t4_netmap.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/sys/dev/cxgbe/t4_netmap.c b/sys/dev/cxgbe/t4_netmap.c index b70756c7a88e..221ad823eb7f 100644 --- a/sys/dev/cxgbe/t4_netmap.c +++ b/sys/dev/cxgbe/t4_netmap.c @@ -110,6 +110,16 @@ static int nm_split_rss = 0; SYSCTL_INT(_hw_cxgbe, OID_AUTO, nm_split_rss, CTLFLAG_RWTUN, &nm_split_rss, 0, "Split the netmap rx queues into two groups."); +/* + * netmap(4) says "netmap does not use features such as checksum offloading, TCP + * segmentation offloading, encryption, VLAN encapsulation/decapsulation, etc." + * but this knob can be used to get the hardware to checksum all tx traffic + * anyway. + */ +static int nm_txcsum = 0; +SYSCTL_INT(_hw_cxgbe, OID_AUTO, nm_txcsum, CTLFLAG_RWTUN, + &nm_txcsum, 0, "Enable transmit checksum offloading."); + static int alloc_nm_rxq_hwq(struct vi_info *vi, struct sge_nm_rxq *nm_rxq, int cong) { @@ -696,13 +706,8 @@ cxgbe_nm_tx(struct adapter *sc, struct sge_nm_txq *nm_txq, cpl->ctrl0 = nm_txq->cpl_ctrl0; cpl->pack = 0; cpl->len = htobe16(slot->len); - /* - * netmap(4) says "netmap does not use features such as - * checksum offloading, TCP segmentation offloading, - * encryption, VLAN encapsulation/decapsulation, etc." - */ - cpl->ctrl1 = htobe64(F_TXPKT_IPCSUM_DIS | - F_TXPKT_L4CSUM_DIS); + cpl->ctrl1 = nm_txcsum ? 0 : + htobe64(F_TXPKT_IPCSUM_DIS | F_TXPKT_L4CSUM_DIS); usgl = (void *)(cpl + 1); usgl->cmd_nsge = htobe32(V_ULPTX_CMD(ULP_TX_SC_DSGL) | |