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net/cadence_gem: Implement mac level loopback mode 

Cadence GEM has a MAC level loopback mode. Implement. Use the same basic
operation as the already implemented PHY loopback.

Reported-by: Deepika Dhamija <deepika@xilinx.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 3a0baf1b6b2fc1be638bdf1a37408ec38988e970.1386136219.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Crosthwaite 2013-12-03 21:54:30 -08:00 committed by Peter Maydell
parent 198aa06459
commit 24e822ea46
1 changed files with 1 additions and 1 deletions
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2
hw/net/cadence_gem.c
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@ -893,7 +893,7 @@ static void gem_transmit(GemState *s)
gem_transmit_updatestats(s, tx_packet, total_bytes);
/* Send the packet somewhere */
if (s->phy_loop) {
if (s->phy_loop || (s->regs[GEM_NWCTRL] & GEM_NWCTRL_LOCALLOOP)) {
gem_receive(qemu_get_queue(s->nic), tx_packet, total_bytes);
} else {
qemu_send_packet(qemu_get_queue(s->nic), tx_packet,