| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 18 Oct 2012 23:01:15 +0200
From: Joachim Eastwood <manabian@...il.com>
To: nicolas.ferre@...el.com, davem@...emloft.net
Cc: netdev@...r.kernel.org, Joachim Eastwood <manabian@...il.com>
Subject: [PATCH 10/14] net/at91_ether: share macb_set_rx_mode with macb
Signed-off-by: Joachim Eastwood <manabian@...il.com>
---
drivers/net/ethernet/cadence/at91_ether.c | 107 +-----------------------------
drivers/net/ethernet/cadence/macb.c | 3 +-
drivers/net/ethernet/cadence/macb.h | 1 +
3 files changed, 4 insertions(+), 107 deletions(-)
diff --git a/drivers/net/ethernet/cadence/at91_ether.c b/drivers/net/ethernet/cadence/at91_ether.c
index a1e0949..f340d24 100644
--- a/drivers/net/ethernet/cadence/at91_ether.c
+++ b/drivers/net/ethernet/cadence/at91_ether.c
@@ -140,111 +140,6 @@ static int set_mac_address(struct net_device *dev, void* addr)
return 0;
}
-static int inline hash_bit_value(int bitnr, __u8 *addr)
-{
- if (addr[bitnr / 8] & (1 << (bitnr % 8)))
- return 1;
- return 0;
-}
-
-/*
- * The hash address register is 64 bits long and takes up two locations in the memory map.
- * The least significant bits are stored in EMAC_HSL and the most significant
- * bits in EMAC_HSH.
- *
- * The unicast hash enable and the multicast hash enable bits in the network configuration
- * register enable the reception of hash matched frames. The destination address is
- * reduced to a 6 bit index into the 64 bit hash register using the following hash function.
- * The hash function is an exclusive or of every sixth bit of the destination address.
- * hash_index[5] = da[5] ^ da[11] ^ da[17] ^ da[23] ^ da[29] ^ da[35] ^ da[41] ^ da[47]
- * hash_index[4] = da[4] ^ da[10] ^ da[16] ^ da[22] ^ da[28] ^ da[34] ^ da[40] ^ da[46]
- * hash_index[3] = da[3] ^ da[09] ^ da[15] ^ da[21] ^ da[27] ^ da[33] ^ da[39] ^ da[45]
- * hash_index[2] = da[2] ^ da[08] ^ da[14] ^ da[20] ^ da[26] ^ da[32] ^ da[38] ^ da[44]
- * hash_index[1] = da[1] ^ da[07] ^ da[13] ^ da[19] ^ da[25] ^ da[31] ^ da[37] ^ da[43]
- * hash_index[0] = da[0] ^ da[06] ^ da[12] ^ da[18] ^ da[24] ^ da[30] ^ da[36] ^ da[42]
- * da[0] represents the least significant bit of the first byte received, that is, the multicast/
- * unicast indicator, and da[47] represents the most significant bit of the last byte
- * received.
- * If the hash index points to a bit that is set in the hash register then the frame will be
- * matched according to whether the frame is multicast or unicast.
- * A multicast match will be signalled if the multicast hash enable bit is set, da[0] is 1 and
- * the hash index points to a bit set in the hash register.
- * A unicast match will be signalled if the unicast hash enable bit is set, da[0] is 0 and the
- * hash index points to a bit set in the hash register.
- * To receive all multicast frames, the hash register should be set with all ones and the
- * multicast hash enable bit should be set in the network configuration register.
- */
-
-/*
- * Return the hash index value for the specified address.
- */
-static int hash_get_index(__u8 *addr)
-{
- int i, j, bitval;
- int hash_index = 0;
-
- for (j = 0; j < 6; j++) {
- for (i = 0, bitval = 0; i < 8; i++)
- bitval ^= hash_bit_value(i*6 + j, addr);
-
- hash_index |= (bitval << j);
- }
-
- return hash_index;
-}
-
-/*
- * Add multicast addresses to the internal multicast-hash table.
- */
-static void at91ether_sethashtable(struct net_device *dev)
-{
- struct macb *lp = netdev_priv(dev);
- struct netdev_hw_addr *ha;
- unsigned long mc_filter[2];
- unsigned int bitnr;
-
- mc_filter[0] = mc_filter[1] = 0;
-
- netdev_for_each_mc_addr(ha, dev) {
- bitnr = hash_get_index(ha->addr);
- mc_filter[bitnr >> 5] |= 1 << (bitnr & 31);
- }
-
- macb_writel(lp, HRB, mc_filter[0]);
- macb_writel(lp, HRT, mc_filter[1]);
-}
-
-/*
- * Enable/Disable promiscuous and multicast modes.
- */
-static void at91ether_set_multicast_list(struct net_device *dev)
-{
- struct macb *lp = netdev_priv(dev);
- unsigned long cfg;
-
- cfg = macb_readl(lp, NCFGR);
-
- if (dev->flags & IFF_PROMISC) /* Enable promiscuous mode */
- cfg |= MACB_BIT(CAF);
- else if (dev->flags & (~IFF_PROMISC)) /* Disable promiscuous mode */
- cfg &= ~MACB_BIT(CAF);
-
- if (dev->flags & IFF_ALLMULTI) { /* Enable all multicast mode */
- macb_writel(lp, HRT, -1);
- macb_writel(lp, HRB, -1);
- cfg |= MACB_BIT(NCFGR_MTI);
- } else if (!netdev_mc_empty(dev)) { /* Enable specific multicasts */
- at91ether_sethashtable(dev);
- cfg |= MACB_BIT(NCFGR_MTI);
- } else if (dev->flags & (~IFF_ALLMULTI)) { /* Disable all multicast mode */
- macb_writel(lp, HRT, 0);
- macb_writel(lp, HRB, 0);
- cfg &= ~MACB_BIT(NCFGR_MTI);
- }
-
- macb_writel(lp, NCFGR, cfg);
-}
-
/* ................................ MAC ................................ */
/*
@@ -500,7 +395,7 @@ static const struct net_device_ops at91ether_netdev_ops = {
.ndo_stop = at91ether_close,
.ndo_start_xmit = at91ether_start_xmit,
.ndo_get_stats = at91ether_stats,
- .ndo_set_rx_mode = at91ether_set_multicast_list,
+ .ndo_set_rx_mode = macb_set_rx_mode,
.ndo_set_mac_address = set_mac_address,
.ndo_do_ioctl = macb_ioctl,
.ndo_validate_addr = eth_validate_addr,
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index 8ee6de5..6c84a11 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -997,7 +997,7 @@ static void macb_sethashtable(struct net_device *dev)
/*
* Enable/Disable promiscuous and multicast modes.
*/
-static void macb_set_rx_mode(struct net_device *dev)
+void macb_set_rx_mode(struct net_device *dev)
{
unsigned long cfg;
struct macb *bp = netdev_priv(dev);
@@ -1029,6 +1029,7 @@ static void macb_set_rx_mode(struct net_device *dev)
macb_writel(bp, NCFGR, cfg);
}
+EXPORT_SYMBOL_GPL(macb_set_rx_mode);
static int macb_open(struct net_device *dev)
{
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index fd2961a..2710562 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -574,6 +574,7 @@ extern const struct ethtool_ops macb_ethtool_ops;
int macb_mii_init(struct macb *bp);
int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+void macb_set_rx_mode(struct net_device *dev);
static inline bool macb_is_gem(struct macb *bp)
{
--
1.7.12.3
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists