mirror of https://github.com/m-labs/artiq.git
lwip/liteethif: cleanup, drop frames above MTU (#398)
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ccdfa1eff3
commit
2b447055e5
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@ -15,9 +15,6 @@
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#include <hw/flags.h>
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#include <hw/ethmac_mem.h>
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static unsigned int rxslot;
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static unsigned int rxlen;
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static char *rxbuffer;
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static char *rxbuffer0;
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static char *rxbuffer1;
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static unsigned int txslot;
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@ -29,31 +26,6 @@ static char *txbuffer1;
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#define IFNAME0 'e'
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#define IFNAME1 't'
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static void liteeth_low_level_init(struct netif *netif)
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{
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int i;
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netif->hwaddr_len = 6;
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for(i=0;i<netif->hwaddr_len;i++)
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netif->hwaddr[i] = macadr[i];
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netif->mtu = 1514;
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netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;
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ethmac_sram_reader_ev_pending_write(ETHMAC_EV_SRAM_READER);
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ethmac_sram_writer_ev_pending_write(ETHMAC_EV_SRAM_WRITER);
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rxbuffer0 = (char *)ETHMAC_RX0_BASE;
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rxbuffer1 = (char *)ETHMAC_RX1_BASE;
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txbuffer0 = (char *)ETHMAC_TX0_BASE;
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txbuffer1 = (char *)ETHMAC_TX1_BASE;
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rxslot = 0;
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txslot = 0;
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rxbuffer = rxbuffer0;
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txbuffer = txbuffer0;
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}
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static err_t liteeth_low_level_output(struct netif *netif, struct pbuf *p)
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{
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struct pbuf *q;
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@ -86,10 +58,18 @@ static err_t liteeth_low_level_output(struct netif *netif, struct pbuf *p)
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static struct pbuf *liteeth_low_level_input(struct netif *netif)
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{
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unsigned int rxslot;
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unsigned int rxlen;
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char *rxbuffer;
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struct pbuf *p, *q;
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p = NULL;
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if(ethmac_sram_writer_ev_pending_read() & ETHMAC_EV_SRAM_WRITER) {
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rxslot = ethmac_sram_writer_slot_read();
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rxlen = ethmac_sram_writer_length_read();
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/* dest MAC + source MAC + 802.1Q + ethertype + payload (MTU) */
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if(rxlen <= (netif->mtu + 18)) {
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if(rxslot)
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rxbuffer = rxbuffer1;
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else
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@ -105,7 +85,9 @@ static struct pbuf *liteeth_low_level_input(struct netif *netif)
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else
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q = NULL;
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}
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}
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ethmac_sram_writer_ev_pending_write(ETHMAC_EV_SRAM_WRITER);
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}
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return p;
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}
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@ -119,23 +101,28 @@ void liteeth_input(struct netif *netif)
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err_t liteeth_init(struct netif *netif)
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{
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struct liteethif *liteethif;
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liteethif = mem_malloc(sizeof(struct liteethif));
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if(liteethif == NULL)
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return ERR_MEM;
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netif->state = liteethif;
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int i;
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netif->hwaddr_len = 6;
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for(i=0;i<netif->hwaddr_len;i++)
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netif->hwaddr[i] = macadr[i];
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netif->name[0] = IFNAME0;
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netif->name[1] = IFNAME1;
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netif->output = etharp_output;
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netif->linkoutput = liteeth_low_level_output;
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netif->mtu = 1514;
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netif->mtu = 1500;
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netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;
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liteethif->ethaddr = (struct eth_addr *)&(netif->hwaddr[0]);
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ethmac_sram_reader_ev_pending_write(ETHMAC_EV_SRAM_READER);
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ethmac_sram_writer_ev_pending_write(ETHMAC_EV_SRAM_WRITER);
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liteeth_low_level_init(netif);
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rxbuffer0 = (char *)ETHMAC_RX0_BASE;
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rxbuffer1 = (char *)ETHMAC_RX1_BASE;
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txbuffer0 = (char *)ETHMAC_TX0_BASE;
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txbuffer1 = (char *)ETHMAC_TX1_BASE;
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txslot = 0;
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txbuffer = txbuffer0;
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return ERR_OK;
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}
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@ -7,10 +7,6 @@
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extern unsigned char macadr[];
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struct liteethif {
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struct eth_addr *ethaddr;
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};
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void liteeth_input(struct netif *netif);
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err_t liteeth_init(struct netif *netif);
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@ -56,10 +56,7 @@ static void lwip_service(void)
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{
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sys_check_timeouts();
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#ifdef CSR_ETHMAC_BASE
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if(ethmac_sram_writer_ev_pending_read() & ETHMAC_EV_SRAM_WRITER) {
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liteeth_input(&netif);
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ethmac_sram_writer_ev_pending_write(ETHMAC_EV_SRAM_WRITER);
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}
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#else
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if(uart_read_nonblock()) {
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u8_t c;
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