static inline void
oce_set_rx_oflags(mblk_t *mp, struct oce_nic_rx_cqe *cqe)
{
int csum_flags = 0;
/* set flags */
if (cqe->u0.s.ip_cksum_pass) {
csum_flags |= HCK_IPV4_HDRCKSUM_OK;
}
if (cqe->u0.s.l4_cksum_pass) {
csum_flags |= (HCK_FULLCKSUM | HCK_FULLCKSUM_OK);
}
if (csum_flags) {
(void) mac_hcksum_set(mp, 0, 0, 0, 0, csum_flags);
}
}
static mblk_t *
bge_receive_packet(bge_t *bgep, bge_rbd_t *hw_rbd_p, recv_ring_t *rrp)
{
bge_rbd_t hw_rbd;
buff_ring_t *brp;
sw_rbd_t *srbdp;
uchar_t *dp;
mblk_t *mp;
uint_t len;
uint_t minsize;
uint_t maxsize;
uint32_t pflags;
mp = NULL;
hw_rbd = *hw_rbd_p;
switch (hw_rbd.flags & (RBD_FLAG_MINI_RING|RBD_FLAG_JUMBO_RING)) {
case RBD_FLAG_MINI_RING|RBD_FLAG_JUMBO_RING:
default:
/* error, this shouldn't happen */
BGE_PKTDUMP((bgep, &hw_rbd, NULL, "bad ring flags!"));
goto error;
case RBD_FLAG_JUMBO_RING:
brp = &bgep->buff[BGE_JUMBO_BUFF_RING];
break;
#if (BGE_BUFF_RINGS_USED > 2)
case RBD_FLAG_MINI_RING:
brp = &bgep->buff[BGE_MINI_BUFF_RING];
break;
#endif /* BGE_BUFF_RINGS_USED > 2 */
case 0:
brp = &bgep->buff[BGE_STD_BUFF_RING];
break;
}
if (hw_rbd.index >= brp->desc.nslots) {
/* error, this shouldn't happen */
BGE_PKTDUMP((bgep, &hw_rbd, NULL, "bad ring index!"));
goto error;
}
srbdp = &brp->sw_rbds[hw_rbd.index];
if (hw_rbd.opaque != srbdp->pbuf.token) {
/* bogus, drop the packet */
BGE_PKTDUMP((bgep, &hw_rbd, srbdp, "bad ring token"));
goto refill;
}
if ((hw_rbd.flags & RBD_FLAG_PACKET_END) == 0) {
/* bogus, drop the packet */
BGE_PKTDUMP((bgep, &hw_rbd, srbdp, "unterminated packet"));
goto refill;
}
if (hw_rbd.flags & RBD_FLAG_FRAME_HAS_ERROR) {
/* bogus, drop the packet */
BGE_PKTDUMP((bgep, &hw_rbd, srbdp, "errored packet"));
goto refill;
}
len = hw_rbd.len;
#ifdef BGE_IPMI_ASF
/*
* When IPMI/ASF is enabled, VLAN tag must be stripped.
*/
if (bgep->asf_enabled && (hw_rbd.flags & RBD_FLAG_VLAN_TAG))
maxsize = bgep->chipid.ethmax_size + ETHERFCSL;
else
#endif
/*
* H/W will not strip the VLAN tag from incoming packet
* now, as RECEIVE_MODE_KEEP_VLAN_TAG bit is set in
* RECEIVE_MAC_MODE_REG register.
*/
maxsize = bgep->chipid.ethmax_size + VLAN_TAGSZ + ETHERFCSL;
if (len > maxsize) {
/* bogus, drop the packet */
BGE_PKTDUMP((bgep, &hw_rbd, srbdp, "oversize packet"));
goto refill;
}
#ifdef BGE_IPMI_ASF
if (bgep->asf_enabled && (hw_rbd.flags & RBD_FLAG_VLAN_TAG))
minsize = ETHERMIN + ETHERFCSL - VLAN_TAGSZ;
else
#endif
minsize = ETHERMIN + ETHERFCSL;
if (len < minsize) {
/* bogus, drop the packet */
BGE_PKTDUMP((bgep, &hw_rbd, srbdp, "undersize packet"));
goto refill;
}
/*
* Packet looks good; get a buffer to copy it into.
* We want to leave some space at the front of the allocated
* buffer in case any upstream modules want to prepend some
* sort of header. This also has the side-effect of making
* the packet *contents* 4-byte aligned, as required by NCA!
*/
#ifdef BGE_IPMI_ASF
if (bgep->asf_enabled && (hw_rbd.flags & RBD_FLAG_VLAN_TAG)) {
mp = allocb(BGE_HEADROOM + len + VLAN_TAGSZ, 0);
} else {
#endif
mp = allocb(BGE_HEADROOM + len, 0);
#ifdef BGE_IPMI_ASF
}
#endif
if (mp == NULL) {
/* Nothing to do but drop the packet */
goto refill;
}
/*
* Sync the data and copy it to the STREAMS buffer.
*/
DMA_SYNC(srbdp->pbuf, DDI_DMA_SYNC_FORKERNEL);
if (bge_check_dma_handle(bgep, srbdp->pbuf.dma_hdl) != DDI_FM_OK) {
bgep->bge_dma_error = B_TRUE;
bgep->bge_chip_state = BGE_CHIP_ERROR;
return (NULL);
}
#ifdef BGE_IPMI_ASF
if (bgep->asf_enabled && (hw_rbd.flags & RBD_FLAG_VLAN_TAG)) {
/*
* As VLAN tag has been stripped from incoming packet in ASF
* scenario, we insert it into this packet again.
*/
struct ether_vlan_header *ehp;
mp->b_rptr = dp = mp->b_rptr + BGE_HEADROOM - VLAN_TAGSZ;
bcopy(DMA_VPTR(srbdp->pbuf), dp, 2 * ETHERADDRL);
ehp = (void *)dp;
ehp->ether_tpid = ntohs(ETHERTYPE_VLAN);
ehp->ether_tci = ntohs(hw_rbd.vlan_tci);
bcopy(((uchar_t *)(DMA_VPTR(srbdp->pbuf))) + 2 * ETHERADDRL,
dp + 2 * ETHERADDRL + VLAN_TAGSZ,
len - 2 * ETHERADDRL);
} else {
#endif
mp->b_rptr = dp = mp->b_rptr + BGE_HEADROOM;
bcopy(DMA_VPTR(srbdp->pbuf), dp, len);
#ifdef BGE_IPMI_ASF
}
if (bgep->asf_enabled && (hw_rbd.flags & RBD_FLAG_VLAN_TAG)) {
mp->b_wptr = dp + len + VLAN_TAGSZ - ETHERFCSL;
} else
#endif
mp->b_wptr = dp + len - ETHERFCSL;
/*
* Special check for one specific type of data corruption;
* in a good packet, the first 8 bytes are *very* unlikely
* to be the same as the second 8 bytes ... but we let the
* packet through just in case.
*/
if (bcmp(dp, dp+8, 8) == 0)
BGE_PKTDUMP((bgep, &hw_rbd, srbdp, "stuttered packet?"));
pflags = 0;
if (hw_rbd.flags & RBD_FLAG_TCP_UDP_CHECKSUM)
pflags |= HCK_FULLCKSUM;
if (hw_rbd.flags & RBD_FLAG_IP_CHECKSUM)
pflags |= HCK_IPV4_HDRCKSUM_OK;
if (pflags != 0)
mac_hcksum_set(mp, 0, 0, 0, hw_rbd.tcp_udp_cksum, pflags);
/* Update per-ring rx statistics */
rrp->rx_pkts++;
rrp->rx_bytes += len;
refill:
/*
* Replace the buffer in the ring it came from ...
*/
bge_refill(bgep, brp, srbdp);
return (mp);
error:
/*
* We come here if the integrity of the ring descriptors
* (rather than merely packet data) appears corrupted.
* The factotum will attempt to reset-and-recover.
*/
bgep->bge_chip_state = BGE_CHIP_ERROR;
bge_fm_ereport(bgep, DDI_FM_DEVICE_INVAL_STATE);
return (NULL);
}