Hostapd doesn't really seem to care much at the moment, but it really should be notified about EAPOL frame transmit callbacks as well. Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> --- hostapd/driver_devicescape.c | 48 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) --- hostap.orig/hostapd/driver_devicescape.c 2007-08-14 11:49:58.000000000 +0200 +++ hostap/hostapd/driver_devicescape.c 2007-08-14 12:44:05.000000000 +0200 @@ -1518,6 +1518,54 @@ struct sock_filter msock_filter_insns[] /* do we need any other frames? */ + /* + * do the rest of the test only on frames we sent ourselves + */ + BPF_STMT(BPF_LD | BPF_W | BPF_ABS, 4), + BPF_STMT(BPF_ALU | BPF_AND | BPF_K, + LE32(1<<IEEE80211_RADIOTAP_TX_FLAGS)), + BPF_JUMP(BPF_JMP | BPF_JEQ, 0, FAIL, 0), + + /* + * drop non-data frames, WDS frames + */ + /* load the lower byte of the frame control field */ + BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), + /* mask off QoS bit */ + BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c), + /* drop non-data frames */ + BPF_JUMP(BPF_JMP | BPF_JEQ, 8, 0, FAIL), + /* load the upper byte of the frame control field */ + BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), + /* mask off toDS/fromDS */ + BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03), + /* drop WDS frames */ + BPF_JUMP(BPF_JMP | BPF_JEQ, 3, FAIL, 0), + + /* + * add header length to index + */ + /* load the lower byte of the frame control field */ + BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0), + /* mask off QoS bit */ + BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80), + /* right shift it by 6 to give 0 or 2 */ + BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6), + /* add data frame header length */ + BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24), + /* add index, was start of 802.11 header */ + BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0), + /* move to index, now start of LL header */ + BPF_STMT(BPF_MISC | BPF_TAX, 0), + + /* + * Accept EAPOL frames + */ + BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0), + BPF_JUMP(BPF_JMP | BPF_JEQ, 0xAAAA0300, 0, FAIL), + BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4), + BPF_JUMP(BPF_JMP | BPF_JEQ, 0x0000888E, PASS, FAIL), + /* keep these last two statements or change the code below */ /* return 0 == "DROP" */ BPF_STMT(BPF_RET | BPF_K, 0), - To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
