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Implement RSS queue tagging for em(4) class devices from a copy and massage

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of functions from igb(4).  This enables 2 queue routing on 82574L class
devices again.
This commit is contained in:
Sean Bruno 2017-01-25 23:12:03 +00:00
parent 5ab1cf33f7
commit cbf1505df9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=312786
1 changed files with 33 additions and 1 deletions
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34
sys/dev/e1000/em_txrx.c
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@ -62,6 +62,7 @@ static int lem_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri);
static void lem_receive_checksum(int status, int errors, if_rxd_info_t ri);
static void em_receive_checksum(uint32_t status, if_rxd_info_t ri);
static int em_determine_rsstype(u32 pkt_info);
extern int em_intr(void *arg);
struct if_txrx em_txrx = {
@ -645,6 +646,7 @@ em_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
union e1000_rx_desc_extended *rxd;
u16 len;
u32 pkt_info;
u32 staterr = 0;
bool eop;
int i, cidx, vtag;
@ -655,6 +657,7 @@ em_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
do {
rxd = &rxr->rx_base[cidx];
staterr = le32toh(rxd->wb.upper.status_error);
pkt_info = le32toh(rxd->wb.lower.mrq);
/* Error Checking then decrement count */
MPASS ((staterr & E1000_RXD_STAT_DD) != 0);
@ -690,10 +693,14 @@ em_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
}
ri->iri_vtag = vtag;
ri->iri_nfrags = i;
if (vtag)
ri->iri_flags |= M_VLANTAG;
ri->iri_flowid =
le32toh(rxd->wb.lower.hi_dword.rss);
ri->iri_rsstype = em_determine_rsstype(pkt_info);
ri->iri_nfrags = i;
return (0);
}
@ -721,6 +728,31 @@ lem_receive_checksum(int status, int errors, if_rxd_info_t ri)
}
}
/********************************************************************
*
* Parse the packet type to determine the appropriate hash
*
******************************************************************/
static int
em_determine_rsstype(u32 pkt_info)
{
switch (pkt_info & E1000_RXDADV_RSSTYPE_MASK) {
case E1000_RXDADV_RSSTYPE_IPV4_TCP:
return M_HASHTYPE_RSS_TCP_IPV4;
case E1000_RXDADV_RSSTYPE_IPV4:
return M_HASHTYPE_RSS_IPV4;
case E1000_RXDADV_RSSTYPE_IPV6_TCP:
return M_HASHTYPE_RSS_TCP_IPV6;
case E1000_RXDADV_RSSTYPE_IPV6_EX:
return M_HASHTYPE_RSS_IPV6_EX;
case E1000_RXDADV_RSSTYPE_IPV6:
return M_HASHTYPE_RSS_IPV6;
case E1000_RXDADV_RSSTYPE_IPV6_TCP_EX:
return M_HASHTYPE_RSS_TCP_IPV6_EX;
default:
return M_HASHTYPE_OPAQUE;
}
}
static void
em_receive_checksum(uint32_t status, if_rxd_info_t ri)
{