From d5e308457e8e9b4988fbd69d38c30782125b3f65 Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Thu, 22 Oct 2009 20:19:41 +0200 Subject: [PATCH] mwl8k: fix multicast address filter programming mwl8k's ->prepare_multicast() currently just enables reception of all multicast packets, which is somewhat ineffective. Fix this by either disabling all multicast RX, enabling multicast RX according to the multicast address filter table, or enabling all multicast RX, depending on whether ->prepare_multicast() was given any multicast addresses and whether the hardware multicast address filter table is large enough to fit all requested addresses. Signed-off-by: Lennert Buytenhek Signed-off-by: John W. Linville --- drivers/net/wireless/mwl8k.c | 40 +++++++++++++++++++++++++++------------- 1 file changed, 27 insertions(+), 13 deletions(-) diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c index ba7b8ef..0b4fa14 100644 --- a/drivers/net/wireless/mwl8k.c +++ b/drivers/net/wireless/mwl8k.c @@ -1539,7 +1539,10 @@ struct mwl8k_cmd_mac_multicast_adr { __u8 addr[0][ETH_ALEN]; }; -#define MWL8K_ENABLE_RX_MULTICAST 0x000F +#define MWL8K_ENABLE_RX_DIRECTED 0x0001 +#define MWL8K_ENABLE_RX_MULTICAST 0x0002 +#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004 +#define MWL8K_ENABLE_RX_BROADCAST 0x0008 static struct mwl8k_cmd_pkt * __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, @@ -1547,11 +1550,14 @@ __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, { struct mwl8k_priv *priv = hw->priv; struct mwl8k_cmd_mac_multicast_adr *cmd; + int allmulti; int size; - int i; - if (mc_count > priv->num_mcaddrs) - mc_count = priv->num_mcaddrs; + allmulti = 0; + if (mc_count > priv->num_mcaddrs) { + allmulti = 1; + mc_count = 0; + } size = sizeof(*cmd) + mc_count * ETH_ALEN; @@ -1561,16 +1567,24 @@ __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); cmd->header.length = cpu_to_le16(size); - cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); - cmd->numaddr = cpu_to_le16(mc_count); - - for (i = 0; i < mc_count && mclist; i++) { - if (mclist->da_addrlen != ETH_ALEN) { - kfree(cmd); - return NULL; + cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED | + MWL8K_ENABLE_RX_BROADCAST); + + if (allmulti) { + cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST); + } else if (mc_count) { + int i; + + cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); + cmd->numaddr = cpu_to_le16(mc_count); + for (i = 0; i < mc_count && mclist; i++) { + if (mclist->da_addrlen != ETH_ALEN) { + kfree(cmd); + return NULL; + } + memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN); + mclist = mclist->next; } - memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN); - mclist = mclist->next; } return &cmd->header; -- 2.7.4