diff options
| author |   Florin Coras <fcoras@cisco.com> | 2020-04-06 21:28:59 +0000 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2020-04-07 14:46:47 +0000 |
| commit | ba78e2380e86926c7e29bc3538eb7ac4e78699b1 (patch) | |
| tree | f673f105517a6c63a75574cb597f61b966366570 /src/vnet/udp/udp.c | |
| parent | 59fea5a6a3fafe0a5a0d2f543db53af790013e3a (diff) | |
udp session: jumbo frames and configurable mtu
Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I6b750bef5df0f8544e05177ccd480f87a020832d
Diffstat (limited to 'src/vnet/udp/udp.c')
| -rw-r--r-- | src/vnet/udp/udp.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/src/vnet/udp/udp.c b/src/vnet/udp/udp.c index 48d518a984e..daab453f43d 100644 --- a/src/vnet/udp/udp.c +++ b/src/vnet/udp/udp.c @@ -196,6 +196,7 @@ udp_session_bind (u32 session_index, transport_endpoint_t * lcl) listener->c_proto = TRANSPORT_PROTO_UDP; listener->c_s_index = session_index; listener->c_fib_index = lcl->fib_index; + listener->mss = um->default_mtu - sizeof (udp_header_t); listener->flags |= UDP_CONN_F_OWNS_PORT | UDP_CONN_F_LISTEN; lcl_ext = (transport_endpoint_cfg_t *) lcl; if (lcl_ext->transport_flags & TRANSPORT_CFG_F_CONNECTED) @@ -409,10 +410,14 @@ static int udp_session_send_params (transport_connection_t * tconn, transport_send_params_t * sp) { + udp_connection_t *uc; + + uc = udp_get_connection_from_transport (tconn); + /* No constraint on TX window */ sp->snd_space = ~0; /* TODO figure out MTU of output interface */ - sp->snd_mss = 1460; + sp->snd_mss = uc->mss; sp->tx_offset = 0; sp->flags = 0; return 0; @@ -423,6 +428,7 @@ udp_open_connection (transport_endpoint_cfg_t * rmt) { vlib_main_t *vm = vlib_get_main (); u32 thread_index = vm->thread_index; + udp_main_t *um = &udp_main; ip46_address_t lcl_addr; udp_connection_t *uc; u16 lcl_port; @@ -483,6 +489,7 @@ conn_alloc: uc->c_is_ip4 = rmt->is_ip4; uc->c_proto = TRANSPORT_PROTO_UDP; uc->c_fib_index = rmt->fib_index; + uc->mss = rmt->mss ? rmt->mss : (um->default_mtu - sizeof (udp_header_t)); uc->flags |= UDP_CONN_F_OWNS_PORT; if (rmt->transport_flags & TRANSPORT_CFG_F_CONNECTED) uc->flags |= UDP_CONN_F_CONNECTED; @@ -639,6 +646,8 @@ udp_init (vlib_main_t * vm) vlib_node_add_next (vm, udp4_local_node.index, udp4_input_node.index); um->local_to_input_edge[UDP_IP6] = vlib_node_add_next (vm, udp6_local_node.index, udp6_input_node.index); + + um->default_mtu = 1500; return 0; } @@ -650,6 +659,24 @@ VLIB_INIT_FUNCTION (udp_init) = }; /* *INDENT-ON* */ +static clib_error_t * +udp_config_fn (vlib_main_t * vm, unformat_input_t * input) +{ + udp_main_t *um = &udp_main; + u32 tmp; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "mtu %u", &tmp)) + um->default_mtu = tmp; + else + return clib_error_return (0, "unknown input `%U'", + format_unformat_error, input); + } + return 0; +} + +VLIB_CONFIG_FUNCTION (udp_config_fn, "udp"); static clib_error_t * show_udp_punt_fn (vlib_main_t * vm, unformat_input_t * input, |