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wl1271: Prevent dropping of TX frames in joins

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The wl1271 uses a session counter in CMD_JOIN and TX frame descriptors. This
counter is used to determine which frames to drop when the CMD_JOIN is
executed.

The driver executes CMD_JOIN multiple times upon association and sometimes
disassociation, and we don't want any frames to get lost.

Fix this by incrementing the session counter only when leaving idle (not every
CMD_JOIN as before.) Also, remove the TX flush flag from the CMD_JOIN options.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Juuso Oikarinen 2010-05-24 11:18:15 +03:00 committed by John W. Linville
parent 43163f0f8a
commit db81956cc4
2 changed files with 5 additions and 6 deletions
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6
drivers/net/wireless/wl12xx/wl1271_cmd.c
View File

@ -336,12 +336,6 @@ int wl1271_cmd_join(struct wl1271 *wl, u8 bss_type)
join->channel = wl->channel;
join->ssid_len = wl->ssid_len;
memcpy(join->ssid, wl->ssid, wl->ssid_len);
join->ctrl = WL1271_JOIN_CMD_CTRL_TX_FLUSH;
/* increment the session counter */
wl->session_counter++;
if (wl->session_counter >= SESSION_COUNTER_MAX)
wl->session_counter = 0;
join->ctrl |= wl->session_counter << WL1271_JOIN_CMD_TX_SESSION_OFFSET;

5
drivers/net/wireless/wl12xx/wl1271_main.c
View File

@ -1135,6 +1135,11 @@ static int wl1271_dummy_join(struct wl1271 *wl)
memcpy(wl->bssid, dummy_bssid, ETH_ALEN);
/* increment the session counter */
wl->session_counter++;
if (wl->session_counter >= SESSION_COUNTER_MAX)
wl->session_counter = 0;
/* pass through frames from all BSS */
wl1271_configure_filters(wl, FIF_OTHER_BSS);