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forward PAE (IEEE 802.1X Authentication) frames as raw 802.11 frames to AC

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This commit is contained in:
Andreas Schultz 2016-05-10 17:07:46 +02:00
parent 9ded0bb87b
commit 0e19b53e28
3 changed files with 52 additions and 12 deletions
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5
NEWS.md
View File

@ -3,6 +3,11 @@ SmartCAPWAP
CAPWAP WTP and AC implementation CAPWAP WTP and AC implementation
Version 1.3.0 - unreleased
---------------------------
* forward PAE (IEEE 802.1X Authentication) frames as raw 802.11 frames to AC
Version 1.2.1 - 06 May 2016 Version 1.2.1 - 06 May 2016
--------------------------- ---------------------------

11
src/wtp/kmod/capwap.c
View File

@ -637,7 +637,16 @@ int sc_capwap_parsingpacket(struct sc_capwap_session* session,
} }
/* */ /* */
int sc_capwap_forwarddata(struct sc_capwap_session* session, uint8_t radioid, uint8_t binding, struct sk_buff* skb, uint32_t flags, struct sc_capwap_radio_addr* radioaddr, int radioaddrlength, struct sc_capwap_wireless_information* winfo, int winfolength) { int sc_capwap_forwarddata(struct sc_capwap_session* session,
uint8_t radioid,
uint8_t binding,
struct sk_buff* skb,
uint32_t flags,
struct sc_capwap_radio_addr* radioaddr,
int radioaddrlength,
struct sc_capwap_wireless_information* winfo,
int winfolength)
{
int err; int err;
int size; int size;
int length; int length;

48
src/wtp/kmod/netlinkapp.c
View File

@ -85,32 +85,58 @@ static int sc_netlink_handler(uint32_t ifindex, struct sk_buff* skb,
int err; int err;
uint8_t radioaddrbuffer[CAPWAP_RADIO_EUI48_LENGTH_PADDED]; uint8_t radioaddrbuffer[CAPWAP_RADIO_EUI48_LENGTH_PADDED];
uint8_t winfobuffer[CAPWAP_WINFO_FRAMEINFO_LENGTH_PADDED]; uint8_t winfobuffer[CAPWAP_WINFO_FRAMEINFO_LENGTH_PADDED];
uint16_t hdrlen, ethertype;
uint8_t *payload;
struct sc_capwap_radio_addr* radioaddr = NULL; struct sc_capwap_radio_addr* radioaddr = NULL;
struct sc_capwap_wireless_information* winfo = NULL; struct sc_capwap_wireless_information* winfo = NULL;
uint32_t flags = nldev->flags;
/* Drop packet */ /* Drop packet */
ret = -1; ret = -1;
/* IEEE 802.11 into IEEE 802.3 */ hdrlen = ieee80211_hdrlen(hdr->frame_control);
if (nldev->flags & NLSMARTCAPWAP_FLAGS_TUNNEL_8023) { if (!pskb_may_pull(skb, hdrlen + 8))
if (ieee80211_data_to_8023(skb, nldev->dev->dev_addr, NL80211_IFTYPE_AP)) { goto error;
goto error;
}
/* Create Radio Mac Address */ payload = skb->data + hdrlen;
radioaddr = sc_capwap_setradiomacaddress(radioaddrbuffer, CAPWAP_RADIO_EUI48_LENGTH_PADDED, nldev->dev->dev_addr); ethertype = (payload[6] << 8) | payload[7];
TRACEKMOD("### sc_netlink_handler, ethertype %04x\n", ethertype);
switch (ethertype) {
case ETH_P_PAE:
/* forward EAPOL as raw 802.11 frame, clear 802.3 tunnel flag */
flags &= ~NLSMARTCAPWAP_FLAGS_TUNNEL_8023;
break;
default:
/* IEEE 802.11 into IEEE 802.3 */
if (nldev->flags & NLSMARTCAPWAP_FLAGS_TUNNEL_8023) {
if (ieee80211_data_to_8023(skb, nldev->dev->dev_addr, NL80211_IFTYPE_AP))
goto error;
/* Create Radio Mac Address */
radioaddr =
sc_capwap_setradiomacaddress(radioaddrbuffer,
CAPWAP_RADIO_EUI48_LENGTH_PADDED,
nldev->dev->dev_addr);
}
break;
} }
/* Create Wireless Information */ /* Create Wireless Information */
if (sig_dbm || rate) { if (sig_dbm || rate)
winfo = sc_capwap_setwinfo_frameinfo(winfobuffer, CAPWAP_WINFO_FRAMEINFO_LENGTH_PADDED, (uint8_t)sig_dbm, 0, ((uint16_t)rate) * 5); winfo = sc_capwap_setwinfo_frameinfo(winfobuffer,
} CAPWAP_WINFO_FRAMEINFO_LENGTH_PADDED,
(uint8_t)sig_dbm, 0, ((uint16_t)rate) * 5);
/* */ /* */
CAPWAP_SKB_CB(skb)->flags = SKB_CAPWAP_FLAG_FROM_IEEE80211; CAPWAP_SKB_CB(skb)->flags = SKB_CAPWAP_FLAG_FROM_IEEE80211;
/* Forward to AC */ /* Forward to AC */
err = sc_capwap_forwarddata(&sn->sc_acsession, nldev->radioid, nldev->binding, skb, nldev->flags, radioaddr, (radioaddr ? CAPWAP_RADIO_EUI48_LENGTH_PADDED : 0), winfo, (winfo ? CAPWAP_WINFO_FRAMEINFO_LENGTH_PADDED : 0)); err = sc_capwap_forwarddata(&sn->sc_acsession, nldev->radioid, nldev->binding, skb, flags,
radioaddr, (radioaddr ? CAPWAP_RADIO_EUI48_LENGTH_PADDED : 0),
winfo, (winfo ? CAPWAP_WINFO_FRAMEINFO_LENGTH_PADDED : 0));
} }
error: error: