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em: skip rxcsum offload processing when disabled

Browse source 
Similarly to the other Intel drivers, don't try to process
RX checksum offloads when this feature (IFCAP_RXCSUM) is
disabled.

Reviewed by:	gallatin, kbowling, erj
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D33155
This commit is contained in:
Vincenzo Maffione 2021-12-01 21:10:46 +00:00
parent d91559564d
commit d0633af765
1 changed files with 2 additions and 1 deletions
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3
sys/dev/e1000/em_txrx.c
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@ -706,7 +706,8 @@ em_isc_rxd_pkt_get(void *arg, if_rxd_info_t ri)
i++;
} while (!eop);
em_receive_checksum(staterr, staterr >> 24, ri);
if (if_getcapenable(ri->iri_ifp) & IFCAP_RXCSUM)
em_receive_checksum(staterr, staterr >> 24, ri);
if (staterr & E1000_RXD_STAT_VP) {
vtag = le16toh(rxd->wb.upper.vlan);