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vfs/lwip: add missing signal handlers

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Note, without batching from the Nic server this may slow down the
throughput a bit.

genodelabs/genode#4427
This commit is contained in:
Johannes Schlatow 2022-02-09 17:14:32 +01:00 committed by Norman Feske
parent 58e0b24006
commit 70bf0cbe84
2 changed files with 30 additions and 3 deletions
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21
repos/libports/include/lwip/nic_netif.h
View File

@ -95,6 +95,7 @@ class Lwip::Nic_netif
Genode::Io_signal_handler<Nic_netif> _link_state_handler;
Genode::Io_signal_handler<Nic_netif> _rx_packet_handler;
Genode::Io_signal_handler<Nic_netif> _tx_ready_handler;
bool _dhcp { false };
@ -167,6 +168,21 @@ class Lwip::Nic_netif
}
}
/**
* Handle tx ack_avail and ready_to_submit signals
*/
void handle_tx_ready()
{
auto &tx = *_nic.tx();
/* flush acknowledgements */
while (tx.ack_avail())
tx.release_packet(tx.get_acked_packet());
/* notify subclass to resume pending transmissions */
status_callback();
}
void configure(Genode::Xml_node const &config)
{
_dhcp = config.attribute_value("dhcp", false);
@ -232,7 +248,8 @@ class Lwip::Nic_netif
BUF_SIZE, BUF_SIZE,
config.attribute_value("label", Genode::String<160>("lwip")).string()),
_link_state_handler(env.ep(), *this, &Nic_netif::handle_link_state),
_rx_packet_handler( env.ep(), *this, &Nic_netif::handle_rx_packets)
_rx_packet_handler( env.ep(), *this, &Nic_netif::handle_rx_packets),
_tx_ready_handler( env.ep(), *this, &Nic_netif::handle_tx_ready)
{
Genode::memset(&_netif, 0x00, sizeof(_netif));
@ -307,6 +324,8 @@ class Lwip::Nic_netif
_nic.link_state_sigh(_link_state_handler);
_nic.rx_channel()->sigh_packet_avail(_rx_packet_handler);
_nic.rx_channel()->sigh_ready_to_ack(_rx_packet_handler);
_nic.tx_channel()->sigh_ready_to_submit(_tx_ready_handler);
_nic.tx_channel()->sigh_ack_avail (_tx_ready_handler);
return ERR_OK;
}

12
repos/libports/src/lib/vfs/lwip/vfs.cc
View File

@ -1006,7 +1006,9 @@ class Lwip::Udp_socket_dir final :
err_t err = udp_sendto(_pcb, buf, &_to_addr, _to_port);
pbuf_free(buf);
if (err != ERR_OK)
if (err == ERR_WOULDBLOCK)
return Write_result::WRITE_ERR_WOULD_BLOCK;
else if (err != ERR_OK)
return Write_result::WRITE_ERR_IO;
remain -= buf->tot_len;
src += buf->tot_len;
@ -1496,7 +1498,13 @@ class Lwip::Tcp_socket_dir final :
}
/* send queued data */
if (out > 0) tcp_output(_pcb);
if (out > 0) {
err_t err = tcp_output(_pcb);
if (err == ERR_WOULDBLOCK)
return Write_result::WRITE_ERR_WOULD_BLOCK;
else if (err != ERR_OK)
return Write_result::WRITE_ERR_IO;
}
out_count = out;
return res;