diff options
| author |   Edward Cree <ecree@solarflare.com> | 2016-11-17 10:52:36 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-11-18 11:55:38 -0500 |
| commit | 46d1efd852ccbc94e8c4f8c41cfd84147a103436 (patch) | |
| tree | 0ea6687be60f6afcc7d6cd1798480e2ef4b8209e /drivers/net/ethernet/sfc/net_driver.h | |
| parent | sfc: handle failure to allocate TSOv2 contexts (diff) | |
| download | linux-dev-46d1efd852ccbc94e8c4f8c41cfd84147a103436.tar.xz linux-dev-46d1efd852ccbc94e8c4f8c41cfd84147a103436.zip | |
sfc: remove Software TSO
It gives no advantage over GSO now that xmit_more exists. If we find
ourselves unable to handle a TSO skb (because our TXQ doesn't have a
TSOv2 context and the NIC doesn't support TSOv1), hand it back to GSO.
Also do that if the TSO handler fails with EINVAL for any other reason.
As Falcon-architecture NICs don't support any firmware-assisted TSO,
they no longer advertise TSO feature flags at all.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sfc/net_driver.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/net_driver.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index 2da3e8fb6d71..f97f828a0898 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -225,6 +225,7 @@ struct efx_tx_buffer { * @tso_long_headers: Number of packets with headers too long for standard * blocks * @tso_packets: Number of packets via the TSO xmit path + * @tso_fallbacks: Number of times TSO fallback used * @pushes: Number of times the TX push feature has been used * @pio_packets: Number of times the TX PIO feature has been used * @xmit_more_available: Are any packets waiting to be pushed to the NIC @@ -266,6 +267,7 @@ struct efx_tx_queue { unsigned int tso_bursts; unsigned int tso_long_headers; unsigned int tso_packets; + unsigned int tso_fallbacks; unsigned int pushes; unsigned int pio_packets; bool xmit_more_available; @@ -1225,6 +1227,8 @@ struct efx_mtd_partition { * and tx_type will already have been validated but this operation * must validate and update rx_filter. * @set_mac_address: Set the MAC address of the device + * @tso_versions: Returns mask of firmware-assisted TSO versions supported. + * If %NULL, then device does not support any TSO version. * @revision: Hardware architecture revision * @txd_ptr_tbl_base: TX descriptor ring base address * @rxd_ptr_tbl_base: RX descriptor ring base address @@ -1381,6 +1385,7 @@ struct efx_nic_type { void (*vswitching_remove)(struct efx_nic *efx); int (*get_mac_address)(struct efx_nic *efx, unsigned char *perm_addr); int (*set_mac_address)(struct efx_nic *efx); + u32 (*tso_versions)(struct efx_nic *efx); int revision; unsigned int txd_ptr_tbl_base; |