diff options
Diffstat (limited to 'arch/um/drivers/vector_transports.c')
| -rw-r--r-- | arch/um/drivers/vector_transports.c | 42 |
1 files changed, 39 insertions, 3 deletions
diff --git a/arch/um/drivers/vector_transports.c b/arch/um/drivers/vector_transports.c index 77e4ebc206ae..0794d23f07cb 100644 --- a/arch/um/drivers/vector_transports.c +++ b/arch/um/drivers/vector_transports.c @@ -1,7 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2017 - Cambridge Greys Limited * Copyright (C) 2011 - 2014 Cisco Systems Inc - * Licensed under the GPL. */ #include <linux/etherdevice.h> @@ -418,7 +418,7 @@ static int build_raw_transport_data(struct vector_private *vp) return 0; } -static int build_tap_transport_data(struct vector_private *vp) +static int build_hybrid_transport_data(struct vector_private *vp) { if (uml_raw_enable_vnet_headers(vp->fds->rx_fd)) { vp->form_header = &raw_form_header; @@ -432,7 +432,7 @@ static int build_tap_transport_data(struct vector_private *vp) NETIF_F_TSO | NETIF_F_GSO | NETIF_F_GRO); netdev_info( vp->dev, - "tap/raw: using vnet headers for tso and tx/rx checksum" + "tap/raw hybrid: using vnet headers for tso and tx/rx checksum" ); } else { return 0; /* do not try to enable tap too if raw failed */ @@ -442,6 +442,38 @@ static int build_tap_transport_data(struct vector_private *vp) return -1; } +static int build_tap_transport_data(struct vector_private *vp) +{ + /* "Pure" tap uses the same fd for rx and tx */ + if (uml_tap_enable_vnet_headers(vp->fds->tx_fd)) { + vp->form_header = &raw_form_header; + vp->verify_header = &raw_verify_header; + vp->header_size = sizeof(struct virtio_net_hdr); + vp->rx_header_size = sizeof(struct virtio_net_hdr); + vp->dev->hw_features |= + (NETIF_F_TSO | NETIF_F_GSO | NETIF_F_GRO); + vp->dev->features |= + (NETIF_F_RXCSUM | NETIF_F_HW_CSUM | + NETIF_F_TSO | NETIF_F_GSO | NETIF_F_GRO); + netdev_info( + vp->dev, + "tap: using vnet headers for tso and tx/rx checksum" + ); + return 0; + } + return -1; +} + + +static int build_bess_transport_data(struct vector_private *vp) +{ + vp->form_header = NULL; + vp->verify_header = NULL; + vp->header_size = 0; + vp->rx_header_size = 0; + return 0; +} + int build_transport_data(struct vector_private *vp) { char *transport = uml_vector_fetch_arg(vp->parsed, "transport"); @@ -454,6 +486,10 @@ int build_transport_data(struct vector_private *vp) return build_raw_transport_data(vp); if (strncmp(transport, TRANS_TAP, TRANS_TAP_LEN) == 0) return build_tap_transport_data(vp); + if (strncmp(transport, TRANS_HYBRID, TRANS_HYBRID_LEN) == 0) + return build_hybrid_transport_data(vp); + if (strncmp(transport, TRANS_BESS, TRANS_BESS_LEN) == 0) + return build_bess_transport_data(vp); return 0; } |