[Zrouter-src-freebsd] ZRouter.org: push to FreeBSD HEAD tree

[zrouter-src-freebsd at zrouter.org]

details:   http://zrouter.org/hg/FreeBSD/head//rev/d49f6df4160d
changeset: 538:d49f6df4160d
user:      Aleksandr Rybalko <ray at ddteam.net>
date:      Tue Oct 16 13:36:10 2012 +0300
description:
* Expose CSUM ability to network stack.
* Tell DMA to start from +2 position on RX

diffstat:

 head/sys/mips/atheros/if_arge.c |  39 +++++++++++++++------------------------
 1 files changed, 15 insertions(+), 24 deletions(-)

diffs (90 lines):

diff -r cdfc72b65a60 -r d49f6df4160d head/sys/mips/atheros/if_arge.c
--- a/head/sys/mips/atheros/if_arge.c	Tue Sep 25 11:48:54 2012 +0300
+++ b/head/sys/mips/atheros/if_arge.c	Tue Oct 16 13:36:10 2012 +0300
@@ -146,7 +146,6 @@
 static int arge_dma_alloc(struct arge_softc *);
 static void arge_dma_free(struct arge_softc *);
 static int arge_newbuf(struct arge_softc *, int);
-static __inline void arge_fixup_rx(struct mbuf *);
 
 static device_method_t arge_methods[] = {
 	/* Device interface */
@@ -350,6 +349,8 @@
 #ifdef DEVICE_POLLING
 	ifp->if_capabilities |= IFCAP_POLLING;
 #endif
+	ifp->if_capabilities |= IFCAP_RXCSUM|IFCAP_TXCSUM;
+	ifp->if_capenable |= IFCAP_RXCSUM|IFCAP_TXCSUM;
 
 	is_base_mac_empty = 1;
 	for (i = 0; i < ETHER_ADDR_LEN; i++) {
@@ -1567,8 +1568,10 @@
 	desc = rxd->desc;
 	if (segs[0].ds_addr & 3)
 		panic("RX packet address unaligned");
-	desc->packet_addr = segs[0].ds_addr;
-	desc->packet_ctrl = ARGE_DESC_EMPTY | ARGE_DMASIZE(segs[0].ds_len);
+	desc->packet_addr = segs[0].ds_addr + ETHER_ALIGN;
+	desc->packet_ctrl = ARGE_DESC_EMPTY |
+	    ARGE_DMASIZE(segs[0].ds_len - ETHER_ALIGN);
+	m->m_data += ETHER_ALIGN;
 
 	bus_dmamap_sync(sc->arge_cdata.arge_rx_ring_tag,
 	    sc->arge_cdata.arge_rx_ring_map,
@@ -1577,25 +1580,6 @@
 	return (0);
 }
 
-static __inline void
-arge_fixup_rx(struct mbuf *m)
-{
-	int		i;
-	uint16_t	*src, *dst;
-
-	src = mtod(m, uint16_t *);
-	dst = src - 1;
-
-	for (i = 0; i < m->m_len / sizeof(uint16_t); i++) {
-		*dst++ = *src++;
-	}
-
-	if (m->m_len % sizeof(uint16_t))
-		*(uint8_t *)dst = *(uint8_t *)src;
-
-	m->m_data -= ETHER_ALIGN;
-}
-
 #ifdef DEVICE_POLLING
 static int
 arge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
@@ -1614,7 +1598,6 @@
 }
 #endif /* DEVICE_POLLING */
 
-
 static void
 arge_tx_locked(struct arge_softc *sc)
 {
@@ -1716,13 +1699,21 @@
 		    BUS_DMASYNC_POSTREAD);
 		m = rxd->rx_m;
 
-		arge_fixup_rx(m);
 		m->m_pkthdr.rcvif = ifp;
 		/* Skip 4 bytes of CRC */
 		m->m_pkthdr.len = m->m_len = packet_len - ETHER_CRC_LEN;
 		ifp->if_ipackets++;
 		rx_npkts++;
 
+		/* check for crc errors */
+		if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) {
+			/*check for valid checksum*/
+			m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
+			m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
+			m->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
+			    CSUM_PSEUDO_HDR;
+			m->m_flags &= ~M_HASFCS;
+		}
 		ARGE_UNLOCK(sc);
 		(*ifp->if_input)(ifp, m);
 		ARGE_LOCK(sc);