diff options
| author |   Damjan Marion <damarion@cisco.com> | 2022-01-06 21:14:08 +0100 |
|---|---|---|
| committer | Damjan Marion <damarion@cisco.com> | 2022-01-17 12:41:24 +0100 |
| commit | 88a9c0e02ab919cadd4e035133995a6afb4d1c32 (patch) | |
| tree | 15741e8bbe6c9d7077fa2a62b6ac369a17836cfb /src/vnet/ethernet/interface.c | |
| parent | 81bb6fc611d321a92ad2218e1b852db67980768a (diff) | |
interface: improve MTU handling
- per hw-interface-class handlers
- ethernet set_mtu callback
- driver can now refuse MTU change
Type: improvement
Change-Id: I3d37c9129930ebec7bb70caf4263025413873048
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vnet/ethernet/interface.c')
| -rw-r--r-- | src/vnet/ethernet/interface.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/src/vnet/ethernet/interface.c b/src/vnet/ethernet/interface.c index b1513a79774..bac882228cb 100644 --- a/src/vnet/ethernet/interface.c +++ b/src/vnet/ethernet/interface.c @@ -310,6 +310,18 @@ ethernet_mac_change (vnet_hw_interface_t * hi, return (NULL); } +static clib_error_t * +ethernet_set_mtu (vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 mtu) +{ + ethernet_interface_t *ei = + pool_elt_at_index (ethernet_main.interfaces, hi->hw_instance); + + if (ei->cb.set_mtu) + return ei->cb.set_mtu (vnm, hi, mtu); + + return 0; +} + /* *INDENT-OFF* */ VNET_HW_INTERFACE_CLASS (ethernet_hw_interface_class) = { .name = "Ethernet", @@ -321,6 +333,7 @@ VNET_HW_INTERFACE_CLASS (ethernet_hw_interface_class) = { .build_rewrite = ethernet_build_rewrite, .update_adjacency = ethernet_update_adjacency, .mac_addr_change_function = ethernet_mac_change, + .set_mtu = ethernet_set_mtu, }; /* *INDENT-ON* */ @@ -367,8 +380,8 @@ vnet_eth_register_interface (vnet_main_t *vnm, hi->min_packet_bytes = hi->min_supported_packet_bytes = ETHERNET_MIN_PACKET_BYTES; - hi->max_packet_bytes = hi->max_supported_packet_bytes = - ETHERNET_MAX_PACKET_BYTES; + hi->max_supported_packet_bytes = ETHERNET_MAX_PACKET_BYTES; + hi->max_packet_bytes = em->default_mtu; /* Default ethernet MTU, 9000 unless set by ethernet_config see below */ vnet_sw_interface_set_mtu (vnm, hi->sw_if_index, em->default_mtu); @@ -460,8 +473,6 @@ ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags) /* fall through */ case ETHERNET_INTERFACE_FLAG_ACCEPT_ALL: ei->flags &= ~ETHERNET_INTERFACE_FLAG_STATUS_L3; - /* fall through */ - case ETHERNET_INTERFACE_FLAG_MTU: return ei->cb.flag_change (vnm, hi, opn_flags); default: return ~0; |