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Commit b52a8b7f authored by Brice Goglin's avatar Brice Goglin Committed by Jeff Garzik
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myri10ge: fix management of >4kB allocated pages 



Fix management of allocated physical pages when the architecture
page size is not 4kB since the firmware cannot cross 4K boundary.

Signed-off-by: default avatarBrice Goglin <brice@myri.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent f761fae1

drivers/net/myri10ge/myri10ge.c

+8 −0
Original line number Original line Diff line number Diff line
@@ -905,6 +905,14 @@ myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx, 
		    (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE)) {

		    (rx->page_offset + bytes <= MYRI10GE_ALLOC_SIZE)) {

			/* we can use part of previous page */

			/* we can use part of previous page */

			get_page(rx->page);

			get_page(rx->page);

#if MYRI10GE_ALLOC_SIZE > 4096

			/* Firmware cannot cross 4K boundary.. */

			if ((rx->page_offset >> 12) !=

			    ((rx->page_offset + bytes - 1) >> 12)) {

				rx->page_offset =

				    (rx->page_offset + bytes) & ~4095;

			}

#endif

		} else {

		} else {

			/* we need a new page */

			/* we need a new page */

			page =

			page =