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authorMarcel Holtmann <marcel@holtmann.org>2006-07-03 04:02:33 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-07-03 22:53:58 -0400
commit04837f6447c7f3ef114cda1ad761822dedbff8cf (patch)
tree66dbb53e82550723191ffe54f0457eafc3a92d32 /net/bluetooth/hci_event.c
parentda1f519851d1c66331363253f364bdb5d924ea96 (diff)
[Bluetooth] Add automatic sniff mode support
This patch introduces the automatic sniff mode feature. This allows the host to switch idle connections into sniff mode to safe power. Signed-off-by: Ulisses Furquim <ulissesf@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/hci_event.c')
-rw-r--r--net/bluetooth/hci_event.c192
1 files changed, 166 insertions, 26 deletions
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index f41cf1a6c11a..3896dabab11d 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -83,6 +83,8 @@ static void hci_cc_link_policy(struct hci_dev *hdev, __u16 ocf, struct sk_buff *
83{ 83{
84 struct hci_conn *conn; 84 struct hci_conn *conn;
85 struct hci_rp_role_discovery *rd; 85 struct hci_rp_role_discovery *rd;
86 struct hci_rp_write_link_policy *lp;
87 void *sent;
86 88
87 BT_DBG("%s ocf 0x%x", hdev->name, ocf); 89 BT_DBG("%s ocf 0x%x", hdev->name, ocf);
88 90
@@ -106,6 +108,27 @@ static void hci_cc_link_policy(struct hci_dev *hdev, __u16 ocf, struct sk_buff *
106 hci_dev_unlock(hdev); 108 hci_dev_unlock(hdev);
107 break; 109 break;
108 110
111 case OCF_WRITE_LINK_POLICY:
112 sent = hci_sent_cmd_data(hdev, OGF_LINK_POLICY, OCF_WRITE_LINK_POLICY);
113 if (!sent)
114 break;
115
116 lp = (struct hci_rp_write_link_policy *) skb->data;
117
118 if (lp->status)
119 break;
120
121 hci_dev_lock(hdev);
122
123 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(lp->handle));
124 if (conn) {
125 __le16 policy = get_unaligned((__le16 *) (sent + 2));
126 conn->link_policy = __le16_to_cpu(policy);
127 }
128
129 hci_dev_unlock(hdev);
130 break;
131
109 default: 132 default:
110 BT_DBG("%s: Command complete: ogf LINK_POLICY ocf %x", 133 BT_DBG("%s: Command complete: ogf LINK_POLICY ocf %x",
111 hdev->name, ocf); 134 hdev->name, ocf);
@@ -274,7 +297,7 @@ static void hci_cc_host_ctl(struct hci_dev *hdev, __u16 ocf, struct sk_buff *skb
274/* Command Complete OGF INFO_PARAM */ 297/* Command Complete OGF INFO_PARAM */
275static void hci_cc_info_param(struct hci_dev *hdev, __u16 ocf, struct sk_buff *skb) 298static void hci_cc_info_param(struct hci_dev *hdev, __u16 ocf, struct sk_buff *skb)
276{ 299{
277 struct hci_rp_read_loc_features *lf; 300 struct hci_rp_read_local_features *lf;
278 struct hci_rp_read_buffer_size *bs; 301 struct hci_rp_read_buffer_size *bs;
279 struct hci_rp_read_bd_addr *ba; 302 struct hci_rp_read_bd_addr *ba;
280 303
@@ -282,7 +305,7 @@ static void hci_cc_info_param(struct hci_dev *hdev, __u16 ocf, struct sk_buff *s
282 305
283 switch (ocf) { 306 switch (ocf) {
284 case OCF_READ_LOCAL_FEATURES: 307 case OCF_READ_LOCAL_FEATURES:
285 lf = (struct hci_rp_read_loc_features *) skb->data; 308 lf = (struct hci_rp_read_local_features *) skb->data;
286 309
287 if (lf->status) { 310 if (lf->status) {
288 BT_DBG("%s READ_LOCAL_FEATURES failed %d", hdev->name, lf->status); 311 BT_DBG("%s READ_LOCAL_FEATURES failed %d", hdev->name, lf->status);
@@ -447,8 +470,46 @@ static void hci_cs_link_policy(struct hci_dev *hdev, __u16 ocf, __u8 status)
447 BT_DBG("%s ocf 0x%x", hdev->name, ocf); 470 BT_DBG("%s ocf 0x%x", hdev->name, ocf);
448 471
449 switch (ocf) { 472 switch (ocf) {
473 case OCF_SNIFF_MODE:
474 if (status) {
475 struct hci_conn *conn;
476 struct hci_cp_sniff_mode *cp = hci_sent_cmd_data(hdev, OGF_LINK_POLICY, OCF_SNIFF_MODE);
477
478 if (!cp)
479 break;
480
481 hci_dev_lock(hdev);
482
483 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
484 if (conn) {
485 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend);
486 }
487
488 hci_dev_unlock(hdev);
489 }
490 break;
491
492 case OCF_EXIT_SNIFF_MODE:
493 if (status) {
494 struct hci_conn *conn;
495 struct hci_cp_exit_sniff_mode *cp = hci_sent_cmd_data(hdev, OGF_LINK_POLICY, OCF_EXIT_SNIFF_MODE);
496
497 if (!cp)
498 break;
499
500 hci_dev_lock(hdev);
501
502 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
503 if (conn) {
504 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend);
505 }
506
507 hci_dev_unlock(hdev);
508 }
509 break;
510
450 default: 511 default:
451 BT_DBG("%s Command status: ogf HOST_POLICY ocf %x", hdev->name, ocf); 512 BT_DBG("%s Command status: ogf LINK_POLICY ocf %x", hdev->name, ocf);
452 break; 513 break;
453 } 514 }
454} 515}
@@ -630,14 +691,16 @@ static inline void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *sk
630 else 691 else
631 cp.role = 0x01; /* Remain slave */ 692 cp.role = 0x01; /* Remain slave */
632 693
633 hci_send_cmd(hdev, OGF_LINK_CTL, OCF_ACCEPT_CONN_REQ, sizeof(cp), &cp); 694 hci_send_cmd(hdev, OGF_LINK_CTL,
695 OCF_ACCEPT_CONN_REQ, sizeof(cp), &cp);
634 } else { 696 } else {
635 /* Connection rejected */ 697 /* Connection rejected */
636 struct hci_cp_reject_conn_req cp; 698 struct hci_cp_reject_conn_req cp;
637 699
638 bacpy(&cp.bdaddr, &ev->bdaddr); 700 bacpy(&cp.bdaddr, &ev->bdaddr);
639 cp.reason = 0x0f; 701 cp.reason = 0x0f;
640 hci_send_cmd(hdev, OGF_LINK_CTL, OCF_REJECT_CONN_REQ, sizeof(cp), &cp); 702 hci_send_cmd(hdev, OGF_LINK_CTL,
703 OCF_REJECT_CONN_REQ, sizeof(cp), &cp);
641 } 704 }
642} 705}
643 706
@@ -645,7 +708,7 @@ static inline void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *sk
645static inline void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 708static inline void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
646{ 709{
647 struct hci_ev_conn_complete *ev = (struct hci_ev_conn_complete *) skb->data; 710 struct hci_ev_conn_complete *ev = (struct hci_ev_conn_complete *) skb->data;
648 struct hci_conn *conn = NULL; 711 struct hci_conn *conn;
649 712
650 BT_DBG("%s", hdev->name); 713 BT_DBG("%s", hdev->name);
651 714
@@ -667,12 +730,21 @@ static inline void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *s
667 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 730 if (test_bit(HCI_ENCRYPT, &hdev->flags))
668 conn->link_mode |= HCI_LM_ENCRYPT; 731 conn->link_mode |= HCI_LM_ENCRYPT;
669 732
733 /* Get remote features */
734 if (conn->type == ACL_LINK) {
735 struct hci_cp_read_remote_features cp;
736 cp.handle = ev->handle;
737 hci_send_cmd(hdev, OGF_LINK_CTL,
738 OCF_READ_REMOTE_FEATURES, sizeof(cp), &cp);
739 }
740
670 /* Set link policy */ 741 /* Set link policy */
671 if (conn->type == ACL_LINK && hdev->link_policy) { 742 if (conn->type == ACL_LINK && hdev->link_policy) {
672 struct hci_cp_write_link_policy cp; 743 struct hci_cp_write_link_policy cp;
673 cp.handle = ev->handle; 744 cp.handle = ev->handle;
674 cp.policy = __cpu_to_le16(hdev->link_policy); 745 cp.policy = __cpu_to_le16(hdev->link_policy);
675 hci_send_cmd(hdev, OGF_LINK_POLICY, OCF_WRITE_LINK_POLICY, sizeof(cp), &cp); 746 hci_send_cmd(hdev, OGF_LINK_POLICY,
747 OCF_WRITE_LINK_POLICY, sizeof(cp), &cp);
676 } 748 }
677 749
678 /* Set packet type for incoming connection */ 750 /* Set packet type for incoming connection */
@@ -683,7 +755,8 @@ static inline void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *s
683 __cpu_to_le16(hdev->pkt_type & ACL_PTYPE_MASK): 755 __cpu_to_le16(hdev->pkt_type & ACL_PTYPE_MASK):
684 __cpu_to_le16(hdev->pkt_type & SCO_PTYPE_MASK); 756 __cpu_to_le16(hdev->pkt_type & SCO_PTYPE_MASK);
685 757
686 hci_send_cmd(hdev, OGF_LINK_CTL, OCF_CHANGE_CONN_PTYPE, sizeof(cp), &cp); 758 hci_send_cmd(hdev, OGF_LINK_CTL,
759 OCF_CHANGE_CONN_PTYPE, sizeof(cp), &cp);
687 } 760 }
688 } else 761 } else
689 conn->state = BT_CLOSED; 762 conn->state = BT_CLOSED;
@@ -711,8 +784,7 @@ static inline void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *s
711static inline void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 784static inline void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
712{ 785{
713 struct hci_ev_disconn_complete *ev = (struct hci_ev_disconn_complete *) skb->data; 786 struct hci_ev_disconn_complete *ev = (struct hci_ev_disconn_complete *) skb->data;
714 struct hci_conn *conn = NULL; 787 struct hci_conn *conn;
715 __u16 handle = __le16_to_cpu(ev->handle);
716 788
717 BT_DBG("%s status %d", hdev->name, ev->status); 789 BT_DBG("%s status %d", hdev->name, ev->status);
718 790
@@ -721,7 +793,7 @@ static inline void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff
721 793
722 hci_dev_lock(hdev); 794 hci_dev_lock(hdev);
723 795
724 conn = hci_conn_hash_lookup_handle(hdev, handle); 796 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
725 if (conn) { 797 if (conn) {
726 conn->state = BT_CLOSED; 798 conn->state = BT_CLOSED;
727 hci_proto_disconn_ind(conn, ev->reason); 799 hci_proto_disconn_ind(conn, ev->reason);
@@ -778,7 +850,7 @@ static inline void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *s
778static inline void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb) 850static inline void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
779{ 851{
780 struct hci_ev_role_change *ev = (struct hci_ev_role_change *) skb->data; 852 struct hci_ev_role_change *ev = (struct hci_ev_role_change *) skb->data;
781 struct hci_conn *conn = NULL; 853 struct hci_conn *conn;
782 854
783 BT_DBG("%s status %d", hdev->name, ev->status); 855 BT_DBG("%s status %d", hdev->name, ev->status);
784 856
@@ -801,18 +873,43 @@ static inline void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb
801 hci_dev_unlock(hdev); 873 hci_dev_unlock(hdev);
802} 874}
803 875
876/* Mode Change */
877static inline void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
878{
879 struct hci_ev_mode_change *ev = (struct hci_ev_mode_change *) skb->data;
880 struct hci_conn *conn;
881
882 BT_DBG("%s status %d", hdev->name, ev->status);
883
884 hci_dev_lock(hdev);
885
886 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
887 if (conn) {
888 conn->mode = ev->mode;
889 conn->interval = __le16_to_cpu(ev->interval);
890
891 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend)) {
892 if (conn->mode == HCI_CM_ACTIVE)
893 conn->power_save = 1;
894 else
895 conn->power_save = 0;
896 }
897 }
898
899 hci_dev_unlock(hdev);
900}
901
804/* Authentication Complete */ 902/* Authentication Complete */
805static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 903static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
806{ 904{
807 struct hci_ev_auth_complete *ev = (struct hci_ev_auth_complete *) skb->data; 905 struct hci_ev_auth_complete *ev = (struct hci_ev_auth_complete *) skb->data;
808 struct hci_conn *conn = NULL; 906 struct hci_conn *conn;
809 __u16 handle = __le16_to_cpu(ev->handle);
810 907
811 BT_DBG("%s status %d", hdev->name, ev->status); 908 BT_DBG("%s status %d", hdev->name, ev->status);
812 909
813 hci_dev_lock(hdev); 910 hci_dev_lock(hdev);
814 911
815 conn = hci_conn_hash_lookup_handle(hdev, handle); 912 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
816 if (conn) { 913 if (conn) {
817 if (!ev->status) 914 if (!ev->status)
818 conn->link_mode |= HCI_LM_AUTH; 915 conn->link_mode |= HCI_LM_AUTH;
@@ -827,8 +924,7 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
827 cp.handle = __cpu_to_le16(conn->handle); 924 cp.handle = __cpu_to_le16(conn->handle);
828 cp.encrypt = 1; 925 cp.encrypt = 1;
829 hci_send_cmd(conn->hdev, OGF_LINK_CTL, 926 hci_send_cmd(conn->hdev, OGF_LINK_CTL,
830 OCF_SET_CONN_ENCRYPT, 927 OCF_SET_CONN_ENCRYPT, sizeof(cp), &cp);
831 sizeof(cp), &cp);
832 } else { 928 } else {
833 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend); 929 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend);
834 hci_encrypt_cfm(conn, ev->status, 0x00); 930 hci_encrypt_cfm(conn, ev->status, 0x00);
@@ -843,14 +939,13 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s
843static inline void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb) 939static inline void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
844{ 940{
845 struct hci_ev_encrypt_change *ev = (struct hci_ev_encrypt_change *) skb->data; 941 struct hci_ev_encrypt_change *ev = (struct hci_ev_encrypt_change *) skb->data;
846 struct hci_conn *conn = NULL; 942 struct hci_conn *conn;
847 __u16 handle = __le16_to_cpu(ev->handle);
848 943
849 BT_DBG("%s status %d", hdev->name, ev->status); 944 BT_DBG("%s status %d", hdev->name, ev->status);
850 945
851 hci_dev_lock(hdev); 946 hci_dev_lock(hdev);
852 947
853 conn = hci_conn_hash_lookup_handle(hdev, handle); 948 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
854 if (conn) { 949 if (conn) {
855 if (!ev->status) { 950 if (!ev->status) {
856 if (ev->encrypt) 951 if (ev->encrypt)
@@ -871,14 +966,13 @@ static inline void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *
871static inline void hci_change_conn_link_key_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 966static inline void hci_change_conn_link_key_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
872{ 967{
873 struct hci_ev_change_conn_link_key_complete *ev = (struct hci_ev_change_conn_link_key_complete *) skb->data; 968 struct hci_ev_change_conn_link_key_complete *ev = (struct hci_ev_change_conn_link_key_complete *) skb->data;
874 struct hci_conn *conn = NULL; 969 struct hci_conn *conn;
875 __u16 handle = __le16_to_cpu(ev->handle);
876 970
877 BT_DBG("%s status %d", hdev->name, ev->status); 971 BT_DBG("%s status %d", hdev->name, ev->status);
878 972
879 hci_dev_lock(hdev); 973 hci_dev_lock(hdev);
880 974
881 conn = hci_conn_hash_lookup_handle(hdev, handle); 975 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
882 if (conn) { 976 if (conn) {
883 if (!ev->status) 977 if (!ev->status)
884 conn->link_mode |= HCI_LM_SECURE; 978 conn->link_mode |= HCI_LM_SECURE;
@@ -906,18 +1000,35 @@ static inline void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff
906{ 1000{
907} 1001}
908 1002
1003/* Remote Features */
1004static inline void hci_remote_features_evt(struct hci_dev *hdev, struct sk_buff *skb)
1005{
1006 struct hci_ev_remote_features *ev = (struct hci_ev_remote_features *) skb->data;
1007 struct hci_conn *conn;
1008
1009 BT_DBG("%s status %d", hdev->name, ev->status);
1010
1011 hci_dev_lock(hdev);
1012
1013 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
1014 if (conn && !ev->status) {
1015 memcpy(conn->features, ev->features, sizeof(conn->features));
1016 }
1017
1018 hci_dev_unlock(hdev);
1019}
1020
909/* Clock Offset */ 1021/* Clock Offset */
910static inline void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb) 1022static inline void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb)
911{ 1023{
912 struct hci_ev_clock_offset *ev = (struct hci_ev_clock_offset *) skb->data; 1024 struct hci_ev_clock_offset *ev = (struct hci_ev_clock_offset *) skb->data;
913 struct hci_conn *conn = NULL; 1025 struct hci_conn *conn;
914 __u16 handle = __le16_to_cpu(ev->handle);
915 1026
916 BT_DBG("%s status %d", hdev->name, ev->status); 1027 BT_DBG("%s status %d", hdev->name, ev->status);
917 1028
918 hci_dev_lock(hdev); 1029 hci_dev_lock(hdev);
919 1030
920 conn = hci_conn_hash_lookup_handle(hdev, handle); 1031 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
921 if (conn && !ev->status) { 1032 if (conn && !ev->status) {
922 struct inquiry_entry *ie; 1033 struct inquiry_entry *ie;
923 1034
@@ -948,6 +1059,23 @@ static inline void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *
948 hci_dev_unlock(hdev); 1059 hci_dev_unlock(hdev);
949} 1060}
950 1061
1062/* Sniff Subrate */
1063static inline void hci_sniff_subrate_evt(struct hci_dev *hdev, struct sk_buff *skb)
1064{
1065 struct hci_ev_sniff_subrate *ev = (struct hci_ev_sniff_subrate *) skb->data;
1066 struct hci_conn *conn;
1067
1068 BT_DBG("%s status %d", hdev->name, ev->status);
1069
1070 hci_dev_lock(hdev);
1071
1072 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
1073 if (conn) {
1074 }
1075
1076 hci_dev_unlock(hdev);
1077}
1078
951void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 1079void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
952{ 1080{
953 struct hci_event_hdr *hdr = (struct hci_event_hdr *) skb->data; 1081 struct hci_event_hdr *hdr = (struct hci_event_hdr *) skb->data;
@@ -996,6 +1124,10 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
996 hci_role_change_evt(hdev, skb); 1124 hci_role_change_evt(hdev, skb);
997 break; 1125 break;
998 1126
1127 case HCI_EV_MODE_CHANGE:
1128 hci_mode_change_evt(hdev, skb);
1129 break;
1130
999 case HCI_EV_AUTH_COMPLETE: 1131 case HCI_EV_AUTH_COMPLETE:
1000 hci_auth_complete_evt(hdev, skb); 1132 hci_auth_complete_evt(hdev, skb);
1001 break; 1133 break;
@@ -1020,6 +1152,10 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
1020 hci_link_key_notify_evt(hdev, skb); 1152 hci_link_key_notify_evt(hdev, skb);
1021 break; 1153 break;
1022 1154
1155 case HCI_EV_REMOTE_FEATURES:
1156 hci_remote_features_evt(hdev, skb);
1157 break;
1158
1023 case HCI_EV_CLOCK_OFFSET: 1159 case HCI_EV_CLOCK_OFFSET:
1024 hci_clock_offset_evt(hdev, skb); 1160 hci_clock_offset_evt(hdev, skb);
1025 break; 1161 break;
@@ -1028,6 +1164,10 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
1028 hci_pscan_rep_mode_evt(hdev, skb); 1164 hci_pscan_rep_mode_evt(hdev, skb);
1029 break; 1165 break;
1030 1166
1167 case HCI_EV_SNIFF_SUBRATE:
1168 hci_sniff_subrate_evt(hdev, skb);
1169 break;
1170
1031 case HCI_EV_CMD_STATUS: 1171 case HCI_EV_CMD_STATUS:
1032 cs = (struct hci_ev_cmd_status *) skb->data; 1172 cs = (struct hci_ev_cmd_status *) skb->data;
1033 skb_pull(skb, sizeof(cs)); 1173 skb_pull(skb, sizeof(cs));