From: Ben Greear <[email protected]> The goal is to allow the user-space application to properly filter packets before sending them down to the kernel. This should more closely mimic what a real piece of hardware would do.
Signed-off-by: Ben Greear <[email protected]> --- This is against 3.17.8 (plus some hacks and back-ports). I think this will work for my own needs, but I am curious if others have suggestions for improvement. drivers/net/wireless/mac80211_hwsim.c | 48 +++++++++++++++++++++++++++++++++++ drivers/net/wireless/mac80211_hwsim.h | 6 +++++ 2 files changed, 54 insertions(+) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index a3aaf37..3a45a45 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -851,6 +851,52 @@ static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data, return true; } +static void mac80211_hwsim_check_nl_notify(struct mac80211_hwsim_data *data) +{ + struct sk_buff *skb; + u32 center_freq = 0; + u32 _portid; + void *msg_head; + + /* wmediumd mode check */ + _portid = ACCESS_ONCE(wmediumd_portid); + + if (!_portid) + return; + + skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC); + if (skb == NULL) + goto err_print; + + msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0, + HWSIM_CMD_NOTIFY); + if (msg_head == NULL) { + printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head, notify\n"); + goto nla_put_failure; + } + + if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER, + ETH_ALEN, data->addresses[1].addr)) + goto nla_put_failure; + + if (data->channel) + center_freq = data->channel->center_freq; + + if (nla_put_u32(skb, HWSIM_ATTR_FREQ, center_freq)) + goto nla_put_failure; + + genlmsg_end(skb, msg_head); + if (genlmsg_unicast(&init_net, skb, _portid)) + goto err_print; + + return; + +nla_put_failure: + nlmsg_free(skb); +err_print: + printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__); +} + static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw, struct sk_buff *my_skb, int dst_portid) @@ -1399,6 +1445,8 @@ static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed) HRTIMER_MODE_REL); } + mac80211_hwsim_check_nl_notify(data); + return 0; } diff --git a/drivers/net/wireless/mac80211_hwsim.h b/drivers/net/wireless/mac80211_hwsim.h index 85da35a..8f2306a 100644 --- a/drivers/net/wireless/mac80211_hwsim.h +++ b/drivers/net/wireless/mac80211_hwsim.h @@ -68,6 +68,11 @@ enum hwsim_tx_control_flags { * @HWSIM_CMD_CREATE_RADIO: create a new radio with the given parameters, * returns the radio ID (>= 0) or negative on errors * @HWSIM_CMD_DESTROY_RADIO: destroy a radio + * @HWSIM_CMD_NOTIFY: notify user-space about driver changes. This is + * designed to help the user-space app better emulate radio hardware. + * This command uses: + * %HWSIM_ATTR_FREQ # Notify current operating center frequency. + * %HWSIM_ATTR_ADDR_TRANSMITTER # ID which radio we are notifying about. * @__HWSIM_CMD_MAX: enum limit */ enum { @@ -77,6 +82,7 @@ enum { HWSIM_CMD_TX_INFO_FRAME, HWSIM_CMD_CREATE_RADIO, HWSIM_CMD_DESTROY_RADIO, + HWSIM_CMD_NOTIFY, __HWSIM_CMD_MAX, }; #define HWSIM_CMD_MAX (_HWSIM_CMD_MAX - 1) -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
