diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/microsoft/mana/mana_bpf.c | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/microsoft/mana/mana_en.c | 16 |
2 files changed, 16 insertions, 3 deletions
diff --git a/drivers/net/ethernet/microsoft/mana/mana_bpf.c b/drivers/net/ethernet/microsoft/mana/mana_bpf.c index b5e9bb184a1d..53308e139cbe 100644 --- a/drivers/net/ethernet/microsoft/mana/mana_bpf.c +++ b/drivers/net/ethernet/microsoft/mana/mana_bpf.c @@ -237,7 +237,8 @@ static int mana_xdp_set(struct net_device *ndev, struct bpf_prog *prog, bpf_prog_put(old_prog); if (prog) - ndev->max_mtu = MANA_XDP_MTU_MAX; + ndev->max_mtu = min_t(unsigned int, MANA_XDP_MTU_MAX, + gc->adapter_mtu - ETH_HLEN); else ndev->max_mtu = gc->adapter_mtu - ETH_HLEN; diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c index 87862b0434c7..7438ea6b3f26 100644 --- a/drivers/net/ethernet/microsoft/mana/mana_en.c +++ b/drivers/net/ethernet/microsoft/mana/mana_en.c @@ -1233,12 +1233,24 @@ int mana_gd_query_device_cfg(struct gdma_context *gc, u32 proto_major_ver, *max_num_vports = resp.max_num_vports; if (resp.hdr.response.msg_version >= GDMA_MESSAGE_V2) { - if (resp.adapter_mtu < ETH_MIN_MTU + ETH_HLEN) { + if (resp.adapter_mtu == 0) { + /* + * Some older PF firmware versions report an + * adapter_mtu of 0. MANA hardware always supports the + * standard Ethernet MTU, so fall back to ETH_FRAME_LEN. + * Jumbo frames will not be available in this case. + */ + dev_info(dev, + "PF reported adapter_mtu of 0, falling back to %u (jumbo frames disabled)\n", + ETH_FRAME_LEN); + gc->adapter_mtu = ETH_FRAME_LEN; + } else if (resp.adapter_mtu < ETH_MIN_MTU + ETH_HLEN) { dev_err(dev, "Adapter MTU too small: %u\n", resp.adapter_mtu); return -EPROTO; + } else { + gc->adapter_mtu = resp.adapter_mtu; } - gc->adapter_mtu = resp.adapter_mtu; } else { gc->adapter_mtu = ETH_FRAME_LEN; } |