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Code Issues Releases Activity

Implement TCP/IP checksum off-loading on receive. Announce

Browse Source 
rxcsum capabilities.

Reviewed by:	wpaul
This commit is contained in:
Alan Cox 2001-09-23 05:13:12 +00:00
parent 28fb5d9a37
commit 391fa6d3d4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=83849
1 changed files with 21 additions and 3 deletions
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24
sys/pci/if_xl.c
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@ -1462,14 +1462,16 @@ static int xl_attach(dev)
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = xl_ioctl;
ifp->if_output = ether_output;
if (sc->xl_type == XL_TYPE_905B)
if (sc->xl_type == XL_TYPE_905B) {
ifp->if_start = xl_start_90xB;
else
ifp->if_capabilities = IFCAP_RXCSUM;
} else
ifp->if_start = xl_start;
ifp->if_watchdog = xl_watchdog;
ifp->if_init = xl_init;
ifp->if_baudrate = 10000000;
ifp->if_snd.ifq_maxlen = XL_TX_LIST_CNT - 1;
ifp->if_capenable = ifp->if_capabilities;
/*
* Now we have to see what sort of media we have.
@ -1831,7 +1833,7 @@ static void xl_rxeof(sc)
struct ifnet *ifp;
struct xl_chain_onefrag *cur_rx;
int total_len = 0;
u_int16_t rxstat;
u_int32_t rxstat;
ifp = &sc->arpcom.ac_if;
@ -1890,6 +1892,22 @@ static void xl_rxeof(sc)
/* Remove header from mbuf and pass it on. */
m_adj(m, sizeof(struct ether_header));
if (sc->xl_type == XL_TYPE_905B) {
/* Do IP checksum checking. */
if (rxstat & XL_RXSTAT_IPCKOK)
m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
if (!(rxstat & XL_RXSTAT_IPCKERR))
m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
if ((rxstat & XL_RXSTAT_TCPCOK &&
!(rxstat & XL_RXSTAT_TCPCKERR)) ||
(rxstat & XL_RXSTAT_UDPCKOK &&
!(rxstat & XL_RXSTAT_UDPCKERR))) {
m->m_pkthdr.csum_flags |=
CSUM_DATA_VALID|CSUM_PSEUDO_HDR;
m->m_pkthdr.csum_data = 0xffff;
}
}
ether_input(ifp, eh, m);
}