diff options
Diffstat (limited to 'lib/netdev.c')
| -rw-r--r-- | lib/netdev.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/lib/netdev.c b/lib/netdev.c index f95b19af4..a55f77961 100644 --- a/lib/netdev.c +++ b/lib/netdev.c @@ -791,6 +791,8 @@ static bool netdev_send_prepare_packet(const uint64_t netdev_flags, struct dp_packet *packet, char **errormsg) { + uint64_t l4_mask; + if (dp_packet_hwol_is_tso(packet) && !(netdev_flags & NETDEV_TX_OFFLOAD_TCP_TSO)) { /* Fall back to GSO in software. */ @@ -798,11 +800,25 @@ netdev_send_prepare_packet(const uint64_t netdev_flags, return false; } - if (dp_packet_hwol_l4_mask(packet) - && !(netdev_flags & NETDEV_TX_OFFLOAD_TCP_CKSUM)) { - /* Fall back to L4 csum in software. */ - VLOG_ERR_BUF(errormsg, "No L4 checksum support"); + l4_mask = dp_packet_hwol_l4_mask(packet); + if (l4_mask) { + if (dp_packet_hwol_l4_is_tcp(packet)) { + if (!(netdev_flags & NETDEV_TX_OFFLOAD_TCP_CKSUM)) { + /* Fall back to TCP csum in software. */ + VLOG_ERR_BUF(errormsg, "No TCP checksum support"); + return false; + } + } else if (dp_packet_hwol_l4_is_udp(packet)) { + if (!(netdev_flags & NETDEV_TX_OFFLOAD_UDP_CKSUM)) { + /* Fall back to UDP csum in software. */ + VLOG_ERR_BUF(errormsg, "No UDP checksum support"); + return false; + } + } else { + VLOG_ERR_BUF(errormsg, "No L4 checksum support: mask: %"PRIu64, + l4_mask); return false; + } } return true; |