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if_atsam: Add checksum offload.

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This commit is contained in:
Christian Mauderer 2018-03-15 09:09:31 +01:00
parent 67c35b9ed1
commit b2a210ca3e
1 changed files with 44 additions and 8 deletions
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52
rtemsbsd/sys/dev/atsam/if_atsam.c
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@ -454,6 +454,33 @@ static void if_atsam_interrupt_handler(void *arg)
(void)if_atsam_event_send(sc->tx_daemon_tid, tx_event);
}
}
static void rx_update_mbuf(struct mbuf *m, sGmacRxDescriptor *buffer_desc)
{
int frame_len;
frame_len = (int) (buffer_desc->status.bm.len);
m->m_data = mtod(m, char*)+ETHER_ALIGN;
m->m_len = frame_len;
m->m_pkthdr.len = frame_len;
/* check checksum offload result */
m->m_pkthdr.csum_flags = 0;
switch (buffer_desc->status.bm.typeIDMatchOrCksumResult) {
case GMAC_RXDESC_ST_CKSUM_RESULT_IP_CHECKED:
m->m_pkthdr.csum_flags = CSUM_IP_CHECKED | CSUM_IP_VALID;
m->m_pkthdr.csum_data = 0xffff;
break;
case GMAC_RXDESC_ST_CKSUM_RESULT_IP_AND_TCP_CHECKED:
case GMAC_RXDESC_ST_CKSUM_RESULT_IP_AND_UDP_CHECKED:
m->m_pkthdr.csum_flags = CSUM_IP_CHECKED | CSUM_IP_VALID |
CSUM_L4_VALID | CSUM_L4_CALC;
m->m_pkthdr.csum_data = 0xffff;
break;
}
}
/*
* Receive daemon
*/
@ -466,7 +493,6 @@ static void if_atsam_rx_daemon(void *arg)
struct mbuf *m;
struct mbuf *n;
volatile sGmacRxDescriptor *buffer_desc;
int frame_len;
uint32_t tmp_rx_bd_address;
size_t i;
Gmac *pHw = sc->Gmac_inst.gGmacd.pHw;
@ -547,13 +573,8 @@ static void if_atsam_rx_daemon(void *arg)
/* New mbuf for desc */
n = if_atsam_new_mbuf(ifp);
if (n != NULL) {
frame_len = (int)
(buffer_desc->status.bm.len);
rx_update_mbuf(m, buffer_desc);
/* Update mbuf */
m->m_data = mtod(m, char*)+ETHER_ALIGN;
m->m_len = frame_len;
m->m_pkthdr.len = frame_len;
IF_ATSAM_UNLOCK(sc);
sc->ifp->if_input(ifp, m);
IF_ATSAM_LOCK(sc);
@ -658,6 +679,7 @@ static bool if_atsam_send_packet(if_atsam_softc *sc, struct mbuf *m)
uint32_t tmp_val = 0;
Gmac *pHw = sc->Gmac_inst.gGmacd.pHw;
bool success;
int csum_flags = m->m_pkthdr.csum_flags;
if_atsam_tx_bd_cleanup(sc);
/* Wait for interrupt in case no buffer descriptors are available */
@ -706,6 +728,12 @@ static bool if_atsam_send_packet(if_atsam_softc *sc, struct mbuf *m)
if (m == NULL) {
tmp_val |= GMAC_TX_SET_EOF;
tmp_val &= ~GMAC_TX_SET_USED;
if ((csum_flags & (CSUM_IP | CSUM_TCP | CSUM_UDP |
CSUM_TCP_IPV6 | CSUM_UDP_IPV6)) != 0) {
start_packet_tx_bd->status.bm.bNoCRC = 0;
} else {
start_packet_tx_bd->status.bm.bNoCRC = 1;
}
_ARM_Data_synchronization_barrier();
cur->status.val = tmp_val;
start_packet_tx_bd->status.val &= ~GMAC_TX_SET_USED;
@ -979,9 +1007,13 @@ static void if_atsam_init(void *arg)
/* Configuration of DMAC */
dmac_cfg = (GMAC_DCFGR_DRBS(GMAC_RX_BUFFER_SIZE >> 6)) |
GMAC_DCFGR_RXBMS(3) | GMAC_DCFGR_TXPBMS | GMAC_DCFGR_FBLDO_INCR16;
GMAC_DCFGR_RXBMS(3) | GMAC_DCFGR_TXPBMS | GMAC_DCFGR_FBLDO_INCR16 |
GMAC_DCFGR_TXCOEN;
GMAC_SetDMAConfig(sc->Gmac_inst.gGmacd.pHw, dmac_cfg, 0);
/* Enable hardware checksum offload for receive */
sc->Gmac_inst.gGmacd.pHw->GMAC_NCFGR |= GMAC_NCFGR_RXCOEN;
/* Shut down Transmit and Receive */
GMAC_ReceiveEnable(sc->Gmac_inst.gGmacd.pHw, 0);
GMAC_TransmitEnable(sc->Gmac_inst.gGmacd.pHw, 0);
@ -1461,6 +1493,10 @@ static int if_atsam_driver_attach(device_t dev)
ifp->if_ioctl = if_atsam_ioctl;
ifp->if_start = if_atsam_enet_start;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX;
ifp->if_capabilities |= IFCAP_HWCSUM | IFCAP_HWCSUM_IPV6 |
IFCAP_VLAN_HWCSUM;
ifp->if_hwassist = CSUM_IP | CSUM_IP_UDP | CSUM_IP_TCP |
CSUM_IP6_UDP | CSUM_IP6_TCP;
IFQ_SET_MAXLEN(&ifp->if_snd, TXBUF_COUNT - 1);
ifp->if_snd.ifq_drv_maxlen = TXBUF_COUNT - 1;
IFQ_SET_READY(&ifp->if_snd);