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Complete the RX side RSS code: parse the encoded portion of the RX

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descriptor to determine the correct hash type.

MFC after:1 week
This commit is contained in:
Jack F Vogel 2015-01-13 18:56:29 +00:00
parent b78e84d132
commit 6b30e6ae6c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=277143
1 changed files with 62 additions and 2 deletions
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64
sys/dev/ixl/ixl_txrx.c
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@ -1364,6 +1364,63 @@ ixl_rx_discard(struct rx_ring *rxr, int i)
return;
}
#ifdef RSS
/*
** i40e_ptype_to_hash: parse the packet type
** to determine the appropriate hash.
*/
static inline int
ixl_ptype_to_hash(u8 ptype)
{
struct i40e_rx_ptype_decoded decoded;
u8 ex = 0
decode = decode_rx_desc_ptype(ptype);
ex = decoded.outer_frag;
if (!decoded.known)
return M_HASHTYPE_OPAQUE;
if (decoded.outer_ip == I40E_RX_PTYPE_OUTER_L2)
return M_HASHTYPE_OPAQUE;
/* Note: anything that gets to this point is IP */
if (decoded.outer_ip_ver == I40E_RX_PTYPE_OUTER_IPV6) {
switch (decoded.inner_prot) {
case I40E_RX_PTYPE_INNER_PROT_TCP:
if (ex)
return M_HASHTYPE_RSS_TCP_IPV6_EX;
else
return M_HASHTYPE_RSS_TCP_IPV6;
case I40E_RX_PTYPE_INNER_PROT_UDP:
if (ex)
return M_HASHTYPE_RSS_UDP_IPV6_EX;
else
return M_HASHTYPE_RSS_UDP_IPV6;
default:
if (ex)
return M_HASHTYPE_RSS_IPV6_EX;
else
return M_HASHTYPE_RSS_IPV6;
}
}
if (decoded.outer_ip_ver == I40E_RX_PTYPE_OUTER_IPV4) {
switch (decoded.inner_prot) {
case I40E_RX_PTYPE_INNER_PROT_TCP:
return M_HASHTYPE_RSS_TCP_IPV4;
case I40E_RX_PTYPE_INNER_PROT_UDP:
if (ex)
return M_HASHTYPE_RSS_UDP_IPV4_EX;
else
return M_HASHTYPE_RSS_UDP_IPV4;
default:
return M_HASHTYPE_RSS_IPV4;
}
}
/* We should never get here!! */
return M_HASHTYPE_OPAQUE;
}
#endif /* RSS */
/*********************************************************************
*
@ -1562,10 +1619,13 @@ ixl_rxeof(struct ixl_queue *que, int count)
if ((ifp->if_capenable & IFCAP_RXCSUM) != 0)
ixl_rx_checksum(sendmp, status, error, ptype);
#ifdef RSS
/* XXX Work in Progress, fix the build for now */
#endif
sendmp->m_pkthdr.flowid =
le32toh(cur->wb.qword0.hi_dword.rss);
M_HASHTYPE_SET(sendmp, ixl_ptype_to_hash(ptype));
#else
sendmp->m_pkthdr.flowid = que->msix;
M_HASHTYPE_SET(sendmp, M_HASHTYPE_OPAQUE);
#endif
}
next_desc:
bus_dmamap_sync(rxr->dma.tag, rxr->dma.map,