void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst,
u8 dialog_token, const struct wpabuf *resp_tlvs)
{
struct wpabuf *resp;
size_t max_len;
/*
* In the 60 GHz, we have a smaller maximum frame length for management
* frames.
*/
max_len = (freq > 56160) ? 928 : 1400;
/* TODO: fix the length limit to match with the maximum frame length */
if (wpabuf_len(resp_tlvs) > max_len) {
p2p_dbg(p2p, "SD response long enough to require fragmentation");
if (p2p->sd_resp) {
/*
* TODO: Could consider storing the fragmented response
* separately for each peer to avoid having to drop old
* one if there is more than one pending SD query.
* Though, that would eat more memory, so there are
* also benefits to just using a single buffer.
*/
p2p_dbg(p2p, "Drop previous SD response");
wpabuf_free(p2p->sd_resp);
}
p2p->sd_resp = wpabuf_dup(resp_tlvs);
if (p2p->sd_resp == NULL) {
p2p_err(p2p, "Failed to allocate SD response fragmentation area");
return;
}
os_memcpy(p2p->sd_resp_addr, dst, ETH_ALEN);
p2p->sd_resp_dialog_token = dialog_token;
p2p->sd_resp_pos = 0;
p2p->sd_frag_id = 0;
resp = p2p_build_sd_response(dialog_token, WLAN_STATUS_SUCCESS,
1, p2p->srv_update_indic, NULL);
} else {
p2p_dbg(p2p, "SD response fits in initial response");
resp = p2p_build_sd_response(dialog_token,
WLAN_STATUS_SUCCESS, 0,
p2p->srv_update_indic, resp_tlvs);
}
if (resp == NULL)
return;
p2p->pending_action_state = P2P_NO_PENDING_ACTION;
if (p2p_send_action(p2p, freq, dst, p2p->cfg->dev_addr,
p2p->cfg->dev_addr,
wpabuf_head(resp), wpabuf_len(resp), 200) < 0)
p2p_dbg(p2p, "Failed to send Action frame");
wpabuf_free(resp);
}
void p2p_sd_response(struct p2p_data *p2p, int freq, const u8 *dst,
u8 dialog_token, const struct wpabuf *resp_tlvs)
{
struct wpabuf *resp;
/* TODO: fix the length limit to match with the maximum frame length */
if (wpabuf_len(resp_tlvs) > 1400) {
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: SD response long "
"enough to require fragmentation");
if (p2p->sd_resp) {
/*
* TODO: Could consider storing the fragmented response
* separately for each peer to avoid having to drop old
* one if there is more than one pending SD query.
* Though, that would eat more memory, so there are
* also benefits to just using a single buffer.
*/
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Drop "
"previous SD response");
wpabuf_free(p2p->sd_resp);
}
p2p->sd_resp = wpabuf_dup(resp_tlvs);
if (p2p->sd_resp == NULL) {
wpa_msg(p2p->cfg->msg_ctx, MSG_ERROR, "P2P: Failed to "
"allocate SD response fragmentation area");
return;
}
os_memcpy(p2p->sd_resp_addr, dst, ETH_ALEN);
p2p->sd_resp_dialog_token = dialog_token;
p2p->sd_resp_pos = 0;
p2p->sd_frag_id = 0;
resp = p2p_build_sd_response(dialog_token, WLAN_STATUS_SUCCESS,
1, p2p->srv_update_indic, NULL);
} else {
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: SD response fits "
"in initial response");
resp = p2p_build_sd_response(dialog_token,
WLAN_STATUS_SUCCESS, 0,
p2p->srv_update_indic, resp_tlvs);
}
if (resp == NULL)
return;
p2p->pending_action_state = P2P_NO_PENDING_ACTION;
if (p2p_send_action(p2p, freq, dst, p2p->cfg->dev_addr,
p2p->cfg->dev_addr,
wpabuf_head(resp), wpabuf_len(resp), 200) < 0)
wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
"P2P: Failed to send Action frame");
wpabuf_free(resp);
}
