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NFC: llcp: Add cleanup support for unreplied SNL requests

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If the remote LLC doesn't reply in time to our SNL requests we remove
them from the list of pending requests. The timeout is fixed to an
arbitrary value of 3 times remote_lto.

When not replied, the local LLC broadcasts NFC_EVENT_LLC_SDRES nl events for
the concerned uris with sap values set to LLCP_SDP_UNBOUND (which is 65).

Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Thierry Escande
2013-03-04 15:43:32 +01:00
committed by Samuel Ortiz
parent d9b8d8e19b
commit 40213fa851
3 changed files with 57 additions and 0 deletions
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6
net/nfc/llcp/commands.c
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@@ -174,6 +174,8 @@ struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdreq_tlv(u8 tid, char *uri,
sdreq->uri = sdreq->tlv + 3;
memcpy(sdreq->uri, uri, uri_len);
sdreq->time = jiffies;
INIT_HLIST_NODE(&sdreq->node);
return sdreq;
@@ -571,6 +573,10 @@ int nfc_llcp_send_snl_sdreq(struct nfc_llcp_local *local,
mutex_lock(&local->sdreq_lock);
if (hlist_empty(&local->pending_sdreqs))
mod_timer(&local->sdreq_timer,
jiffies + msecs_to_jiffies(3 * local->remote_lto));
hlist_for_each_entry_safe(sdreq, n, tlv_list, node) {
pr_debug("tid %d for %s\n", sdreq->tid, sdreq->uri);