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Code Issues Releases Activity

cxgbe(4): support for IPv6 hardware checksumming (rx and tx).

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This commit is contained in:
Navdeep Parhar 2012-06-29 16:50:52 +00:00
parent 3de8393d5b
commit 9600bf00bb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=237799
2 changed files with 58 additions and 27 deletions
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59
sys/dev/cxgbe/t4_main.c
View File

@ -822,7 +822,7 @@ cxgbe_probe(device_t dev)
#define T4_CAP (IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_HWCSUM | \
IFCAP_VLAN_HWCSUM | IFCAP_TSO | IFCAP_JUMBO_MTU | IFCAP_LRO | \
IFCAP_VLAN_HWTSO)
IFCAP_VLAN_HWTSO | IFCAP_HWCSUM_IPV6)
#define T4_CAP_ENABLE (T4_CAP & ~IFCAP_TSO6)
static int
@ -856,7 +856,8 @@ cxgbe_attach(device_t dev)
ifp->if_capabilities |= IFCAP_TOE4;
#endif
ifp->if_capenable = T4_CAP_ENABLE;
ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO;
ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO |
CSUM_UDP_IPV6 | CSUM_TCP_IPV6;
/* Initialize ifmedia for this port */
ifmedia_init(&pi->media, IFM_IMASK, cxgbe_media_change,
@ -1028,30 +1029,50 @@ cxgbe_ioctl(struct ifnet *ifp, unsigned long cmd, caddr_t data)
if (IFCAP_TSO & ifp->if_capenable &&
!(IFCAP_TXCSUM & ifp->if_capenable)) {
ifp->if_capenable &= ~IFCAP_TSO;
ifp->if_hwassist &= ~CSUM_TSO;
ifp->if_capenable &= ~IFCAP_TSO4;
if_printf(ifp,
"tso disabled due to -txcsum.\n");
}
}
if (mask & IFCAP_TXCSUM_IPV6) {
ifp->if_capenable ^= IFCAP_TXCSUM_IPV6;
ifp->if_hwassist ^= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
if (IFCAP_TSO6 & ifp->if_capenable &&
!(IFCAP_TXCSUM_IPV6 & ifp->if_capenable)) {
ifp->if_capenable &= ~IFCAP_TSO6;
if_printf(ifp,
"tso6 disabled due to -txcsum6.\n");
}
}
if (mask & IFCAP_RXCSUM)
ifp->if_capenable ^= IFCAP_RXCSUM;
if (mask & IFCAP_TSO4) {
ifp->if_capenable ^= IFCAP_TSO4;
if (mask & IFCAP_RXCSUM_IPV6)
ifp->if_capenable ^= IFCAP_RXCSUM_IPV6;
if (IFCAP_TSO & ifp->if_capenable) {
if (IFCAP_TXCSUM & ifp->if_capenable)
ifp->if_hwassist |= CSUM_TSO;
else {
ifp->if_capenable &= ~IFCAP_TSO;
ifp->if_hwassist &= ~CSUM_TSO;
if_printf(ifp,
"enable txcsum first.\n");
rc = EAGAIN;
goto fail;
}
} else
ifp->if_hwassist &= ~CSUM_TSO;
/*
* Note that we leave CSUM_TSO alone (it is always set). The
* kernel takes both IFCAP_TSOx and CSUM_TSO into account before
* sending a TSO request our way, so it's sufficient to toggle
* IFCAP_TSOx only.
*/
if (mask & IFCAP_TSO4) {
if (!(IFCAP_TSO4 & ifp->if_capenable) &&
!(IFCAP_TXCSUM & ifp->if_capenable)) {
if_printf(ifp, "enable txcsum first.\n");
rc = EAGAIN;
goto fail;
}
ifp->if_capenable ^= IFCAP_TSO4;
}
if (mask & IFCAP_TSO6) {
if (!(IFCAP_TSO6 & ifp->if_capenable) &&
!(IFCAP_TXCSUM_IPV6 & ifp->if_capenable)) {
if_printf(ifp, "enable txcsum6 first.\n");
rc = EAGAIN;
goto fail;
}
ifp->if_capenable ^= IFCAP_TSO6;
}
if (mask & IFCAP_LRO) {
#ifdef INET

26
sys/dev/cxgbe/t4_sge.c
View File

@ -1054,15 +1054,23 @@ t4_eth_rx(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m0)
m0->m_flags |= M_FLOWID;
m0->m_pkthdr.flowid = rss->hash_val;
if (cpl->csum_calc && !cpl->err_vec &&
ifp->if_capenable & IFCAP_RXCSUM) {
m0->m_pkthdr.csum_flags |= (CSUM_IP_CHECKED |
CSUM_IP_VALID | CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
if (cpl->ip_frag)
if (cpl->csum_calc && !cpl->err_vec) {
if (ifp->if_capenable & IFCAP_RXCSUM &&
cpl->l2info & htobe32(F_RXF_IP)) {
m0->m_pkthdr.csum_flags |= (CSUM_IP_CHECKED |
CSUM_IP_VALID | CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
rxq->rxcsum++;
} else if (ifp->if_capenable & IFCAP_RXCSUM_IPV6 &&
cpl->l2info & htobe32(F_RXF_IP6)) {
m0->m_pkthdr.csum_flags |= (CSUM_DATA_VALID_IPV6 |
CSUM_PSEUDO_HDR);
rxq->rxcsum++;
}
if (__predict_false(cpl->ip_frag))
m0->m_pkthdr.csum_data = be16toh(cpl->csum);
else
m0->m_pkthdr.csum_data = 0xffff;
rxq->rxcsum++;
}
if (cpl->vlan_ex) {
@ -2827,9 +2835,11 @@ write_txpkt_wr(struct port_info *pi, struct sge_txq *txq, struct mbuf *m,
ctrl1 = 0;
if (!(m->m_pkthdr.csum_flags & CSUM_IP))
ctrl1 |= F_TXPKT_IPCSUM_DIS;
if (!(m->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP)))
if (!(m->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP | CSUM_UDP_IPV6 |
CSUM_TCP_IPV6)))
ctrl1 |= F_TXPKT_L4CSUM_DIS;
if (m->m_pkthdr.csum_flags & (CSUM_IP | CSUM_TCP | CSUM_UDP))
if (m->m_pkthdr.csum_flags & (CSUM_IP | CSUM_TCP | CSUM_UDP |
CSUM_UDP_IPV6 | CSUM_TCP_IPV6))
txq->txcsum++; /* some hardware assistance provided */
/* VLAN tag insertion */