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The buffer address is always overwritten in the extended descriptor format,

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we have to refresh it ... always.  This fixes problems reported in NetMap
with em(4) devices after conversion to extended descriptor format in
svn r293331.

Submitted by:	luigi@
Reported by:	franco@opnsense.org
MFC after:	2 days
This commit is contained in:
sbruno 2016-10-28 13:37:58 +00:00 committed by Franco Fichtner
parent 6c47ea11ac
commit f6f8acf28d
1 changed files with 1 additions and 1 deletions
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2
sys/dev/netmap/if_em_netmap.h
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@ -279,9 +279,9 @@ em_netmap_rxsync(struct netmap_kring *kring, int flags)
if (addr == NETMAP_BUF_BASE(na)) /* bad buf */
goto ring_reset;
curr->read.buffer_addr = htole64(paddr);
if (slot->flags & NS_BUF_CHANGED) {
/* buffer has changed, reload map */
curr->read.buffer_addr = htole64(paddr);
netmap_reload_map(na, rxr->rxtag, rxbuf->map, addr);
slot->flags &= ~NS_BUF_CHANGED;
}