qeth: allow HiperSockets framesize change in suspend (8b2e18f6) · Commits · 戴 / test

For HiperSockets the framesize-definition determines the selected mtu-size and the size of the allocated qdio buffers. A framesize-change may occur while a Linux system with probed HiperSockets device is in suspend state. This patch enables proper resuming of a HiperSockets device in this case. Signed-off-by:

Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by:

Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_core_main.c

+9 −1

Original line number	Diff line number	Diff line
		@@ -1887,8 +1887,16 @@ static int qeth_ulp_enable_cb(struct qeth_card card, struct qeth_reply reply,
		QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
		return 0;
		}
		card->info.max_mtu = mtu;
		if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
		/* frame size has changed */
		if (card->dev &&
		((card->dev->mtu == card->info.initial_mtu) \|\|
		(card->dev->mtu > mtu)))
		card->dev->mtu = mtu;
		qeth_free_qdio_buffers(card);
		}
		card->info.initial_mtu = mtu;
		card->info.max_mtu = mtu;
		card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
		} else {
		card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);

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