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authorYogesh Ashok Powar <yogeshp@marvell.com>2011-08-09 21:02:26 -0400
committerJohn W. Linville <linville@tuxdriver.com>2011-08-12 13:45:03 -0400
commit0879fa44b54101c9955123582018cb511047a2b6 (patch)
tree0a9c1f5fc10a3b320d0db793598822a43b2dc719 /net/mac80211/util.c
parentf3d4505de539f754b78d5c30e5d2cb41a0ed0117 (diff)
cfg80211/mac80211: move information element parsing logic to cfg80211
Moving the parsing logic for retrieving the information elements stored in management frames, e.g. beacons or probe responses, and making it available to other cfg80211 drivers. Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Bing Zhao <bzhao@marvell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/util.c')
-rw-r--r--net/mac80211/util.c167
1 files changed, 0 insertions, 167 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 7a0e351a510..ce916ff6ef0 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -19,7 +19,6 @@
19#include <linux/etherdevice.h> 19#include <linux/etherdevice.h>
20#include <linux/if_arp.h> 20#include <linux/if_arp.h>
21#include <linux/bitmap.h> 21#include <linux/bitmap.h>
22#include <linux/crc32.h>
23#include <net/net_namespace.h> 22#include <net/net_namespace.h>
24#include <net/cfg80211.h> 23#include <net/cfg80211.h>
25#include <net/rtnetlink.h> 24#include <net/rtnetlink.h>
@@ -573,172 +572,6 @@ void ieee802_11_parse_elems(u8 *start, size_t len,
573 ieee802_11_parse_elems_crc(start, len, elems, 0, 0); 572 ieee802_11_parse_elems_crc(start, len, elems, 0, 0);
574} 573}
575 574
576u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
577 struct ieee802_11_elems *elems,
578 u64 filter, u32 crc)
579{
580 size_t left = len;
581 u8 *pos = start;
582 bool calc_crc = filter != 0;
583
584 memset(elems, 0, sizeof(*elems));
585 elems->ie_start = start;
586 elems->total_len = len;
587
588 while (left >= 2) {
589 u8 id, elen;
590
591 id = *pos++;
592 elen = *pos++;
593 left -= 2;
594
595 if (elen > left)
596 break;
597
598 if (calc_crc && id < 64 && (filter & (1ULL << id)))
599 crc = crc32_be(crc, pos - 2, elen + 2);
600
601 switch (id) {
602 case WLAN_EID_SSID:
603 elems->ssid = pos;
604 elems->ssid_len = elen;
605 break;
606 case WLAN_EID_SUPP_RATES:
607 elems->supp_rates = pos;
608 elems->supp_rates_len = elen;
609 break;
610 case WLAN_EID_FH_PARAMS:
611 elems->fh_params = pos;
612 elems->fh_params_len = elen;
613 break;
614 case WLAN_EID_DS_PARAMS:
615 elems->ds_params = pos;
616 elems->ds_params_len = elen;
617 break;
618 case WLAN_EID_CF_PARAMS:
619 elems->cf_params = pos;
620 elems->cf_params_len = elen;
621 break;
622 case WLAN_EID_TIM:
623 if (elen >= sizeof(struct ieee80211_tim_ie)) {
624 elems->tim = (void *)pos;
625 elems->tim_len = elen;
626 }
627 break;
628 case WLAN_EID_IBSS_PARAMS:
629 elems->ibss_params = pos;
630 elems->ibss_params_len = elen;
631 break;
632 case WLAN_EID_CHALLENGE:
633 elems->challenge = pos;
634 elems->challenge_len = elen;
635 break;
636 case WLAN_EID_VENDOR_SPECIFIC:
637 if (elen >= 4 && pos[0] == 0x00 && pos[1] == 0x50 &&
638 pos[2] == 0xf2) {
639 /* Microsoft OUI (00:50:F2) */
640
641 if (calc_crc)
642 crc = crc32_be(crc, pos - 2, elen + 2);
643
644 if (pos[3] == 1) {
645 /* OUI Type 1 - WPA IE */
646 elems->wpa = pos;
647 elems->wpa_len = elen;
648 } else if (elen >= 5 && pos[3] == 2) {
649 /* OUI Type 2 - WMM IE */
650 if (pos[4] == 0) {
651 elems->wmm_info = pos;
652 elems->wmm_info_len = elen;
653 } else if (pos[4] == 1) {
654 elems->wmm_param = pos;
655 elems->wmm_param_len = elen;
656 }
657 }
658 }
659 break;
660 case WLAN_EID_RSN:
661 elems->rsn = pos;
662 elems->rsn_len = elen;
663 break;
664 case WLAN_EID_ERP_INFO:
665 elems->erp_info = pos;
666 elems->erp_info_len = elen;
667 break;
668 case WLAN_EID_EXT_SUPP_RATES:
669 elems->ext_supp_rates = pos;
670 elems->ext_supp_rates_len = elen;
671 break;
672 case WLAN_EID_HT_CAPABILITY:
673 if (elen >= sizeof(struct ieee80211_ht_cap))
674 elems->ht_cap_elem = (void *)pos;
675 break;
676 case WLAN_EID_HT_INFORMATION:
677 if (elen >= sizeof(struct ieee80211_ht_info))
678 elems->ht_info_elem = (void *)pos;
679 break;
680 case WLAN_EID_MESH_ID:
681 elems->mesh_id = pos;
682 elems->mesh_id_len = elen;
683 break;
684 case WLAN_EID_MESH_CONFIG:
685 if (elen >= sizeof(struct ieee80211_meshconf_ie))
686 elems->mesh_config = (void *)pos;
687 break;
688 case WLAN_EID_PEER_LINK:
689 elems->peer_link = pos;
690 elems->peer_link_len = elen;
691 break;
692 case WLAN_EID_PREQ:
693 elems->preq = pos;
694 elems->preq_len = elen;
695 break;
696 case WLAN_EID_PREP:
697 elems->prep = pos;
698 elems->prep_len = elen;
699 break;
700 case WLAN_EID_PERR:
701 elems->perr = pos;
702 elems->perr_len = elen;
703 break;
704 case WLAN_EID_RANN:
705 if (elen >= sizeof(struct ieee80211_rann_ie))
706 elems->rann = (void *)pos;
707 break;
708 case WLAN_EID_CHANNEL_SWITCH:
709 elems->ch_switch_elem = pos;
710 elems->ch_switch_elem_len = elen;
711 break;
712 case WLAN_EID_QUIET:
713 if (!elems->quiet_elem) {
714 elems->quiet_elem = pos;
715 elems->quiet_elem_len = elen;
716 }
717 elems->num_of_quiet_elem++;
718 break;
719 case WLAN_EID_COUNTRY:
720 elems->country_elem = pos;
721 elems->country_elem_len = elen;
722 break;
723 case WLAN_EID_PWR_CONSTRAINT:
724 elems->pwr_constr_elem = pos;
725 elems->pwr_constr_elem_len = elen;
726 break;
727 case WLAN_EID_TIMEOUT_INTERVAL:
728 elems->timeout_int = pos;
729 elems->timeout_int_len = elen;
730 break;
731 default:
732 break;
733 }
734
735 left -= elen;
736 pos += elen;
737 }
738
739 return crc;
740}
741
742void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata) 575void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
743{ 576{
744 struct ieee80211_local *local = sdata->local; 577 struct ieee80211_local *local = sdata->local;
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-14 07:17:56 -0500