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eap-wsc: Increment TX frag. offset only after ACK

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This commit is contained in:
Tim Kourt 2016-11-22 21:00:32 -08:00 committed by Denis Kenzior
parent fe25198af6
commit 79f4d1a9cd
1 changed files with 11 additions and 2 deletions
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13
src/eap-wsc.c
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@ -87,6 +87,7 @@ struct eap_wsc_state {
size_t rx_pdu_buf_len;
size_t rx_pdu_buf_offset;
size_t tx_frag_offset;
size_t tx_last_frag_len;
};
static inline void eap_wsc_state_set_sent_pdu(struct eap_wsc_state *wsc,
@ -338,7 +339,8 @@ static void eap_wsc_send_fragment(struct eap_state *eap)
memcpy(buf + header_len, wsc->sent_pdu + wsc->tx_frag_offset, len);
eap_send_response(eap, EAP_TYPE_EXPANDED, buf, header_len + len);
wsc->tx_frag_offset += len;
wsc->tx_last_frag_len = len;
}
static void eap_wsc_send_response(struct eap_state *eap,
@ -930,8 +932,15 @@ static void eap_wsc_handle_request(struct eap_state *eap,
/* Should never receive these as Enrollee */
return;
case WSC_OP_FRAG_ACK:
if (wsc->tx_frag_offset && wsc->tx_frag_offset < wsc->sent_len)
if (wsc->tx_last_frag_len &&
(wsc->tx_frag_offset + wsc->tx_last_frag_len) <
wsc->sent_len) {
wsc->tx_frag_offset += wsc->tx_last_frag_len;
wsc->tx_last_frag_len = 0;
eap_wsc_send_fragment(eap);
}
return;
case WSC_OP_MSG:
if (flags & WSC_FLAG_LF) {