diff options
| -rw-r--r-- | drivers/isdn/gigaset/asyncdata.c | 55 | ||||
| -rw-r--r-- | drivers/isdn/gigaset/capi.c | 29 | ||||
| -rw-r--r-- | drivers/isdn/gigaset/gigaset.h | 2 | ||||
| -rw-r--r-- | drivers/isdn/gigaset/i4l.c | 28 | ||||
| -rw-r--r-- | drivers/isdn/gigaset/isocdata.c | 6 |
5 files changed, 70 insertions, 50 deletions
diff --git a/drivers/isdn/gigaset/asyncdata.c b/drivers/isdn/gigaset/asyncdata.c index a25216bf475e..256fc4809c81 100644 --- a/drivers/isdn/gigaset/asyncdata.c +++ b/drivers/isdn/gigaset/asyncdata.c @@ -156,7 +156,7 @@ byte_stuff: /* end of frame */ gigaset_isdn_rcv_err(bcs); - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); } else if (!(inputstate & INS_have_data)) { /* 7E 7E */ #ifdef CONFIG_GIGASET_DEBUG ++bcs->emptycount; @@ -172,7 +172,7 @@ byte_stuff: "Checksum failed, %u bytes corrupted!\n", skb->len); gigaset_isdn_rcv_err(bcs); - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); } else if (likely(skb->len > 2)) { __skb_trim(skb, skb->len - 2); gigaset_skb_rcvd(bcs, skb); @@ -182,7 +182,7 @@ byte_stuff: "invalid packet size (%d)\n", skb->len); gigaset_isdn_rcv_err(bcs); } - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); } } @@ -430,11 +430,11 @@ EXPORT_SYMBOL_GPL(gigaset_m10x_input); * opening and closing flags, preserving headroom data. * parameters: * skb skb containing original packet (freed upon return) - * headroom number of headroom bytes to preserve * Return value: * pointer to newly allocated skb containing the result frame + * and the original link layer header, NULL on error */ -static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int headroom) +static struct sk_buff *HDLC_Encode(struct sk_buff *skb) { struct sk_buff *hdlc_skb; __u16 fcs; @@ -456,17 +456,19 @@ static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int headroom) /* size of new buffer: original size + number of stuffing bytes * + 2 bytes FCS + 2 stuffing bytes for FCS (if needed) + 2 flag bytes - * + room for acknowledgement header + * + room for link layer header */ - hdlc_skb = dev_alloc_skb(skb->len + stuf_cnt + 6 + headroom); + hdlc_skb = dev_alloc_skb(skb->len + stuf_cnt + 6 + skb->mac_len); if (!hdlc_skb) { - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); return NULL; } - /* Copy acknowledgement header into new skb */ - skb_reserve(hdlc_skb, headroom); - memcpy(hdlc_skb->head, skb->head, headroom); + /* Copy link layer header into new skb */ + skb_reset_mac_header(hdlc_skb); + skb_reserve(hdlc_skb, skb->mac_len); + memcpy(skb_mac_header(hdlc_skb), skb_mac_header(skb), skb->mac_len); + hdlc_skb->mac_len = skb->mac_len; /* Add flag sequence in front of everything.. */ *(skb_put(hdlc_skb, 1)) = PPP_FLAG; @@ -497,7 +499,7 @@ static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int headroom) *(skb_put(hdlc_skb, 1)) = PPP_FLAG; - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); return hdlc_skb; } @@ -506,28 +508,33 @@ static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int headroom) * preserving headroom data. * parameters: * skb skb containing original packet (freed upon return) - * headroom number of headroom bytes to preserve * Return value: * pointer to newly allocated skb containing the result frame + * and the original link layer header, NULL on error */ -static struct sk_buff *iraw_encode(struct sk_buff *skb, int headroom) +static struct sk_buff *iraw_encode(struct sk_buff *skb) { struct sk_buff *iraw_skb; unsigned char c; unsigned char *cp; int len; - /* worst case: every byte must be stuffed */ - iraw_skb = dev_alloc_skb(2*skb->len + headroom); + /* size of new buffer (worst case = every byte must be stuffed): + * 2 * original size + room for link layer header + */ + iraw_skb = dev_alloc_skb(2*skb->len + skb->mac_len); if (!iraw_skb) { - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); return NULL; } - /* Copy acknowledgement header into new skb */ - skb_reserve(iraw_skb, headroom); - memcpy(iraw_skb->head, skb->head, headroom); + /* copy link layer header into new skb */ + skb_reset_mac_header(iraw_skb); + skb_reserve(iraw_skb, skb->mac_len); + memcpy(skb_mac_header(iraw_skb), skb_mac_header(skb), skb->mac_len); + iraw_skb->mac_len = skb->mac_len; + /* copy and stuff data */ cp = skb->data; len = skb->len; while (len--) { @@ -536,7 +543,7 @@ static struct sk_buff *iraw_encode(struct sk_buff *skb, int headroom) *(skb_put(iraw_skb, 1)) = c; *(skb_put(iraw_skb, 1)) = c; } - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); return iraw_skb; } @@ -548,7 +555,7 @@ static struct sk_buff *iraw_encode(struct sk_buff *skb, int headroom) * Called by LL to encode and queue an skb for sending, and start * transmission if necessary. * Once the payload data has been transmitted completely, gigaset_skb_sent() - * will be called with the first cs->hw_hdr_len bytes of skb->head preserved. + * will be called with the skb's link layer header preserved. * * Return value: * number of bytes accepted for sending (skb->len) if ok, @@ -560,9 +567,9 @@ int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb) unsigned long flags; if (bcs->proto2 == L2_HDLC) - skb = HDLC_Encode(skb, bcs->cs->hw_hdr_len); + skb = HDLC_Encode(skb); else - skb = iraw_encode(skb, bcs->cs->hw_hdr_len); + skb = iraw_encode(skb); if (!skb) { dev_err(bcs->cs->dev, "unable to allocate memory for encoding!\n"); diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c index d1afac2bf650..3f5cd06af104 100644 --- a/drivers/isdn/gigaset/capi.c +++ b/drivers/isdn/gigaset/capi.c @@ -362,6 +362,7 @@ void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb) struct cardstate *cs = bcs->cs; struct gigaset_capi_ctr *iif = cs->iif; struct gigaset_capi_appl *ap = bcs->ap; + unsigned char *req = skb_mac_header(dskb); struct sk_buff *cskb; u16 flags; @@ -380,7 +381,7 @@ void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb) } /* ToDo: honor unset "delivery confirmation" bit */ - flags = CAPIMSG_FLAGS(dskb->head); + flags = CAPIMSG_FLAGS(req); /* build DATA_B3_CONF message */ cskb = alloc_skb(CAPI_DATA_B3_CONF_LEN, GFP_ATOMIC); @@ -393,11 +394,11 @@ void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb) CAPIMSG_SETAPPID(cskb->data, ap->id); CAPIMSG_SETCOMMAND(cskb->data, CAPI_DATA_B3); CAPIMSG_SETSUBCOMMAND(cskb->data, CAPI_CONF); - CAPIMSG_SETMSGID(cskb->data, CAPIMSG_MSGID(dskb->head)); + CAPIMSG_SETMSGID(cskb->data, CAPIMSG_MSGID(req)); CAPIMSG_SETCONTROLLER(cskb->data, iif->ctr.cnr); CAPIMSG_SETPLCI_PART(cskb->data, bcs->channel + 1); CAPIMSG_SETNCCI_PART(cskb->data, 1); - CAPIMSG_SETHANDLE_CONF(cskb->data, CAPIMSG_HANDLE_REQ(dskb->head)); + CAPIMSG_SETHANDLE_CONF(cskb->data, CAPIMSG_HANDLE_REQ(req)); if (flags & ~CAPI_FLAGS_DELIVERY_CONFIRMATION) CAPIMSG_SETINFO_CONF(cskb->data, CapiFlagsNotSupportedByProtocol); @@ -437,7 +438,7 @@ void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb) /* don't send further B3 messages if disconnected */ if (ap->connected < APCONN_ACTIVE) { gig_dbg(DEBUG_LLDATA, "disconnected, discarding data"); - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); return; } @@ -1461,7 +1462,7 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif, /* decode message */ capi_message2cmsg(cmsg, skb->data); dump_cmsg(DEBUG_CMD, __func__, cmsg); - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); /* extract and check channel number from PLCI */ channel = (cmsg->adr.adrPLCI >> 8) & 0xff; @@ -1652,7 +1653,7 @@ static void do_connect_b3_resp(struct gigaset_capi_ctr *iif, ((cmsg->adr.adrNCCI >> 16) & 0xffff) != 1) { dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", "CONNECT_B3_RESP", "NCCI", cmsg->adr.adrNCCI); - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); return; } bcs = &cs->bcs[channel-1]; @@ -1665,7 +1666,7 @@ static void do_connect_b3_resp(struct gigaset_capi_ctr *iif, if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) { dev_err(cs->dev, "%s: out of memory\n", __func__); - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); return; } gig_dbg(DEBUG_CMD, "scheduling HUP"); @@ -1880,12 +1881,12 @@ static void do_data_b3_req(struct gigaset_capi_ctr *iif, return; } - /* - * pull CAPI message from skb, - * pass payload data to device-specific module - * CAPI message will be preserved in headroom - */ + /* pull CAPI message into link layer header */ + skb_reset_mac_header(skb); + skb->mac_len = msglen; skb_pull(skb, msglen); + + /* pass to device-specific module */ if (cs->ops->send_skb(&cs->bcs[channel-1], skb) < 0) { send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); return; @@ -1946,7 +1947,7 @@ static void do_nothing(struct gigaset_capi_ctr *iif, capi_message2cmsg(&iif->acmsg, skb->data); dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); } - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); } static void do_data_b3_resp(struct gigaset_capi_ctr *iif, @@ -1954,7 +1955,7 @@ static void do_data_b3_resp(struct gigaset_capi_ctr *iif, struct sk_buff *skb) { dump_rawmsg(DEBUG_LLDATA, __func__, skb->data); - dev_kfree_skb(skb); + dev_kfree_skb_any(skb); } /* table of outgoing CAPI message handlers with lookup function */ diff --git a/drivers/isdn/gigaset/gigaset.h b/drivers/isdn/gigaset/gigaset.h index 4749ef100fd3..c59216b9c1d0 100644 --- a/drivers/isdn/gigaset/gigaset.h +++ b/drivers/isdn/gigaset/gigaset.h @@ -625,7 +625,7 @@ struct gigaset_ops { /* Called from LL interface to put an skb into the send-queue. * After sending is completed, gigaset_skb_sent() must be called - * with the first cs->hw_hdr_len bytes of skb->head preserved. */ + * with the skb's link layer header preserved. */ int (*send_skb)(struct bc_state *bcs, struct sk_buff *skb); /* Called from ev-layer.c to process a block of data diff --git a/drivers/isdn/gigaset/i4l.c b/drivers/isdn/gigaset/i4l.c index aca72a06184e..828824f905c4 100644 --- a/drivers/isdn/gigaset/i4l.c +++ b/drivers/isdn/gigaset/i4l.c @@ -41,8 +41,8 @@ static int writebuf_from_LL(int driverID, int channel, int ack, { struct cardstate *cs; struct bc_state *bcs; + unsigned char *ack_header; unsigned len; - unsigned skblen; if (!(cs = gigaset_get_cs_by_id(driverID))) { pr_err("%s: invalid driver ID (%d)\n", __func__, driverID); @@ -78,11 +78,23 @@ static int writebuf_from_LL(int driverID, int channel, int ack, return -EINVAL; } - skblen = ack ? len : 0; - skb->head[0] = skblen & 0xff; - skb->head[1] = skblen >> 8; - gig_dbg(DEBUG_MCMD, "skb: len=%u, skblen=%u: %02x %02x", - len, skblen, (unsigned) skb->head[0], (unsigned) skb->head[1]); + /* set up acknowledgement header */ + if (skb_headroom(skb) < HW_HDR_LEN) { + /* should never happen */ + dev_err(cs->dev, "%s: insufficient skb headroom\n", __func__); + return -ENOMEM; + } + skb_set_mac_header(skb, -HW_HDR_LEN); + skb->mac_len = HW_HDR_LEN; + ack_header = skb_mac_header(skb); + if (ack) { + ack_header[0] = len & 0xff; + ack_header[1] = len >> 8; + } else { + ack_header[0] = ack_header[1] = 0; + } + gig_dbg(DEBUG_MCMD, "skb: len=%u, ack=%d: %02x %02x", + len, ack, ack_header[0], ack_header[1]); /* pass to device-specific module */ return cs->ops->send_skb(bcs, skb); @@ -99,6 +111,7 @@ static int writebuf_from_LL(int driverID, int channel, int ack, void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb) { isdn_if *iif = bcs->cs->iif; + unsigned char *ack_header = skb_mac_header(skb); unsigned len; isdn_ctrl response; @@ -108,8 +121,7 @@ void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb) dev_warn(bcs->cs->dev, "%s: skb->len==%d\n", __func__, skb->len); - len = (unsigned char) skb->head[0] | - (unsigned) (unsigned char) skb->head[1] << 8; + len = ack_header[0] + ((unsigned) ack_header[1] << 8); if (len) { gig_dbg(DEBUG_MCMD, "ACKing to LL (id: %d, ch: %d, sz: %u)", bcs->cs->myid, bcs->channel, len); diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c index 7dabfd35874c..bc41611e541d 100644 --- a/drivers/isdn/gigaset/isocdata.c +++ b/drivers/isdn/gigaset/isocdata.c @@ -576,12 +576,12 @@ static inline void hdlc_done(struct bc_state *bcs) dev_notice(cs->dev, "received short frame (%d octets)\n", procskb->len); bcs->hw.bas->runts++; - dev_kfree_skb(procskb); + dev_kfree_skb_any(procskb); gigaset_isdn_rcv_err(bcs); } else if (bcs->fcs != PPP_GOODFCS) { dev_notice(cs->dev, "frame check error (0x%04x)\n", bcs->fcs); bcs->hw.bas->fcserrs++; - dev_kfree_skb(procskb); + dev_kfree_skb_any(procskb); gigaset_isdn_rcv_err(bcs); } else { len = procskb->len; @@ -985,7 +985,7 @@ void gigaset_isoc_input(struct inbuf_t *inbuf) * Called by LL to queue an skb for sending, and start transmission if * necessary. * Once the payload data has been transmitted completely, gigaset_skb_sent() - * will be called with the first cs->hw_hdr_len bytes of skb->head preserved. + * will be called with the skb's link layer header preserved. * * Return value: * number of bytes accepted for sending (skb->len) if ok, |